A control method for wind power and conventional energy networking based on frequency modulation task transfer

Abstract

This invention discloses a control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer. It coordinates the control of conventional and wind power through a complementary integrated power source control center. The complementary integrated power source control center comprises a complementary integration unit, a conventional power source unit, and a wind power source unit. The complementary integration unit transfers all primary frequency regulation tasks from the wind power source unit to the conventional power source unit, while satisfying the total active power setpoint and primary frequency regulation requirements of the complementary integrated power source. For conventional power sources with both primary and secondary frequency regulation functions, this invention employs control logic to prevent regulatory conflicts between the two. For wind power sources that lack primary frequency regulation but must undertake primary frequency regulation obligations as power generators, a control strategy is adopted to transfer all their primary frequency regulation tasks to the conventional power source.

Description

Technical Field

[0001] This invention belongs to the field of power system automation control technology, and relates to a control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer. Background Technology

[0002] With the implementation of the new energy strategy, the proportion of wind power is constantly increasing. However, wind power generation is mainly dependent on the weather. Its power generation capacity is heavily reliant on non-adjustable and non-storable meteorological resources, exhibiting strong randomness and volatility, which seriously threatens the safety of the power grid. Furthermore, due to its reverse peak-shaving characteristic, where the peak generation and peak consumption are completely opposite, it is sometimes even referred to as "garbage electricity".

[0003] At the same time, there are conventional power sources, represented by conventional hydropower stations and thermal power plants. Conventional power sources use the combustion heat energy of coal and natural gas and the hydraulic potential energy as the power source for generators. Compared with wind power, they have good adjustability and storage capacity (depending on the amount of coal stored, gas stored or reservoir capacity). They are the core supporting power source of the power system to date. However, due to the different regulation mechanisms, hydropower and thermal power still have significant performance differences in the regulation process of primary frequency regulation and secondary frequency regulation. Overall, the regulation performance of secondary frequency regulation of hydropower is significantly better than that of thermal power, while the regulation performance of primary frequency regulation is significantly worse than that of thermal power.

[0004] The imbalance between power generation and power consumption in the power grid manifests as a deviation between the grid frequency and the rated frequency (50Hz). When the deviation exceeds a threshold, the dispatching agency adjusts the output active power of each grid-connected power station within its control range to restore the balance between power generation and power consumption, ensuring that the difference between the grid frequency and the rated frequency remains within acceptable limits. This entire process is called secondary frequency regulation. Secondary frequency regulation includes the following steps: 1) The dispatching agency calculates the change in power generation required to restore the grid frequency to the rated frequency based on the grid frequency deviation and the grid's "frequency-power" sensitivity coefficient; 2) The dispatching agency corrects the active power setpoints of each grid-connected power station within its control area based on the calculation results and issues power regulation commands; 3) After receiving the new active power setpoints, each power station uses AGC to distribute the total active power setpoints of the power station to each unit controlled by the AGC; 4) The active power control system of each unit performs closed-loop feedback regulation of the unit's active power based on the new individual unit active power setpoints.

[0005] When the deviation between the grid frequency and the rated frequency exceeds the primary frequency regulation threshold (0.05Hz for hydropower and 0.03Hz for thermal power in most domestic power grids), the governor systems of each generating unit adjust the active power of the unit according to the preset "frequency-power" adjustment coefficient to compensate for the imbalance between the grid's generating power and power consumption to a certain extent. Compared with secondary frequency regulation, primary frequency regulation cannot completely restore the grid frequency to the rated frequency because there is no unified control center to coordinate and control the units participating in primary frequency regulation, and it is related to the calculation mechanism of the adjustment amount. Therefore, it is also called differential regulation. However, the advantages of primary frequency regulation are: 1) Since there is no unified control center, the risk of complete failure as in secondary frequency regulation (such as the abnormal exit of the scheduling secondary frequency regulation function module) is avoided, thus achieving extremely high overall reliability; 2) The adjustment command is directly calculated by the unit, omitting the scheduling calculation, command transmission, and power plant AGC allocation processes of secondary frequency regulation. Therefore, the response speed to grid frequency anomalies is much faster than that of secondary frequency regulation.

[0006] Treating wind power and conventional power sources as an organic whole allows for power regulation tasks aimed at achieving a dynamic balance between power consumption and supply in the power system. Compared to a single wind power source or a single conventional power source, its advantages include a regulation capacity comparable to that of conventional power sources. Furthermore, in situations with abundant wind power, it can correspondingly reduce the active power output of conventional power sources, achieving energy-saving goals such as water storage and coal conservation. However, its limitations lie in the fact that the complementary integrated power source of "wind power + conventional power" also suffers from the inherent frequency regulation problems of conventional power sources. Specifically, "wind power + hydropower" shares the performance disadvantage of primary frequency regulation with hydropower, while "wind power + thermal power" shares the performance disadvantage of secondary frequency regulation with thermal power. Moreover, due to the inherent active power regulation delay of conventional power sources (whether hydropower or thermal power), "wind power + conventional energy" can only suppress, but not solve, the random fluctuations in the output power of wind power to a certain extent. In extreme cases, when the output power of wind power oscillates in a near-harmonic manner, the conventional power source may even experience resonant regulation of active power due to the regulation delay, thereby exacerbating the overall output power oscillation of the complementary integrated power source of "wind power + conventional energy". Summary of the Invention

[0007] The technical problem solved by this invention is to provide a control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer. For wind power sources that do not have primary frequency regulation function but must undertake primary frequency regulation obligations, a control strategy is adopted to transfer all of their primary frequency regulation tasks to conventional power sources.

[0008] This invention is achieved through the following technical solution:

[0009] A control method for wind power and conventional energy grid integration based on frequency regulation task transfer, which coordinates and controls conventional energy and wind power through a complementary integrated power source control center:

[0010] The complementary integrated power supply control center is equipped with a complementary integrated unit, a conventional power supply unit, and a wind power supply unit. The complementary integrated unit transfers all the primary frequency regulation tasks of the wind power supply unit to the conventional power supply unit, and meets the total active power setpoint and primary frequency regulation requirements of the complementary integrated power supply. It issues instructions to the conventional power supply unit to allocate the unit active power target value and to set the primary frequency regulation adjustment coefficient of the conventional power supply unit. Meanwhile, it issues instructions to the wind power supply unit to suggest the start-up and shutdown operation of the wind power unit.

[0011] The instruction for allocating the target value of the active power of the conventional power unit is derived from the total active power setting value of the complementary integrated power supply and the actual active power generated by the wind power unit.

[0012] The instruction to set the primary frequency regulation coefficient of the conventional power unit is to intervene in the regulation amount of each generator set of the conventional power unit when performing primary frequency regulation based on the rated active power capacity of the wind power unit and the rated active power capacity of the conventional power unit, thereby transferring the primary frequency regulation task of the wind power unit to the conventional power unit.

[0013] The instructions for starting and stopping the wind power units are derived from the total active power setpoint of the complementary integrated power source, the joint operation zone of the conventional power unit, the possible fluctuation range of the active power of the wind power unit, the start and stop sequence of the wind power unit, and the sequence of possible fluctuation ranges of active power corresponding to the start and stop sequence, and generate start and stop operation suggestions for wind turbine units for operators to refer to.

[0014] The conventional power unit obtains intermediate control parameters for conventional power sources based on the basic parameters of conventional power sources, including hydropower and thermal power, and sends them to the complementary integration unit. Based on the received active power target value and primary frequency regulation coefficient, it performs conventional power unit-level AGC allocation and unit active power closed-loop regulation, and generates operation suggestions for conventional power units.

[0015] The wind power unit sends intermediate control parameters of the wind power to the complementary integration unit and sends start-up and shutdown operation suggestions for the wind turbine generator set.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] This invention addresses the issue of wind power sources that lack primary frequency regulation capabilities but are obligated to perform it as generators. It employs a control strategy that transfers the entire primary frequency regulation task to conventional power sources. Furthermore, to mitigate the non-ideal nature of conventional power source regulation due to delays and inaccuracies, a large number of dead-zone parameters are introduced into the active power control strategy. This suppresses the overall sensitivity of the control strategy, preventing problems such as excessively high calculation frequencies, frequent changes in regulation targets, and overcompensation. The conventional power source corrects significant deviations in the actual active power output of the wind power unit, effectively suppressing active power fluctuations. Attached Figure Description

[0018] Figure 1 This is a simulation model diagram of the "conventional power supply + wind power" complementary integrated power supply of the present invention;

[0019] Figure 2 This is a logic diagram illustrating the search for operational suggestions for a conventional power supply unit according to the present invention.

[0020] Figure 3 This is a logic diagram illustrating the process of finding suggestions for starting and stopping wind turbine units in the "conventional power supply + wind power" complementary integrated power supply of the present invention.

[0021] Figure 4 This diagram illustrates the adjustment effect of the "conventional power supply + wind power" complementary integrated power supply of the present invention. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments. These descriptions are for illustrative purposes only and are not intended to limit the scope of the invention.

[0023] A control method for wind power and conventional energy grid integration based on frequency regulation task transfer, which coordinates and controls conventional energy and wind power through a complementary integrated power source control center:

[0024] The complementary integrated power supply control center is equipped with a complementary integrated unit, a conventional power supply unit, and a wind power supply unit. The complementary integrated unit transfers all the primary frequency regulation tasks of the wind power supply unit to the conventional power supply unit, and meets the total active power setpoint and primary frequency regulation requirements of the complementary integrated power supply. It issues instructions to the conventional power supply unit to allocate the unit active power target value and to set the primary frequency regulation adjustment coefficient of the conventional power supply unit. Meanwhile, it issues instructions to the wind power supply unit to suggest the start-up and shutdown operation of the wind power unit.

[0025] The instruction for allocating the target value of the active power of the conventional power unit is derived from the total active power setting value of the complementary integrated power supply and the actual active power generated by the wind power unit.

[0026] The instruction to set the primary frequency regulation coefficient of the conventional power unit is to intervene in the regulation amount of each generator set of the conventional power unit when performing primary frequency regulation based on the rated active power capacity of the wind power unit and the rated active power capacity of the conventional power unit, thereby transferring the primary frequency regulation task of the wind power unit to the conventional power unit.

[0027] The instructions for starting and stopping the wind power units are derived from the total active power setpoint of the complementary integrated power source, the joint operation zone of the conventional power unit, the possible fluctuation range of the active power of the wind power unit, the start and stop sequence of the wind power unit, and the sequence of possible fluctuation ranges of active power corresponding to the start and stop sequence, and generate start and stop operation suggestions for wind turbine units for operators to refer to.

[0028] The conventional power unit obtains intermediate control parameters for conventional power sources based on the basic parameters of conventional power sources, including hydropower and thermal power, and sends them to the complementary integration unit. Based on the received active power target value and primary frequency regulation coefficient, it performs conventional power unit-level AGC allocation and unit active power closed-loop regulation, and generates operation suggestions for conventional power units.

[0029] The wind power unit sends intermediate control parameters of the wind power to the complementary integration unit and sends start-up and shutdown operation suggestions for the wind turbine generator set.

[0030] Furthermore, the allocation of the unit active power target value of the complementary integrated unit to the conventional power unit is as follows: the unit active power target value of the conventional power unit is equal to the total active power set value of the complementary integrated power unit minus the actual active power generated by the wind power unit in the calculation.

[0031] The actual active power generated by the wind power unit is included in the calculation. It is based on the actual active power generated by the wind power unit and the output dead zone of the wind power unit is updated at a fixed period.

[0032] The primary frequency regulation coefficient of the complementary integrated unit for the conventional power unit is set as follows: the primary frequency regulation coefficient of the conventional power unit issued by the grid multiplied by the primary frequency scaling coefficient; the primary frequency scaling coefficient is equal to (rated active power capacity of the wind power unit + rated active power capacity of the conventional power unit) ÷ rated active power capacity of the conventional power unit.

[0033] The complementary integrated unit obtains the quantified value of the mismatch of the total active power setting of the complementary integrated power source based on the total active power setting value of the complementary integrated power source, the joint operation zone of the conventional power source unit, and the possible fluctuation range of the active power of the wind power source unit.

[0034] The complementary integration unit then generates start-up and shutdown operation suggestions for the wind power generation unit based on the quantified value of the mismatch, combined with the current start-up and shutdown sequence of the wind power generation unit and the active power fluctuation range sequence corresponding to the start-up and shutdown sequence.

[0035] The parameters acquired by the complementary integration unit include:

[0036] Parameters input to the S1100 complementary integrated unit:

[0037] S1111) The total active power setting value of the complementary integrated power supply directly input;

[0038] S1112) Rated active power capacity of a unit, wherein the rated active power capacity of a conventional power supply unit is equal to the sum of the rated active power capacity of a single unit of the generating unit of that type of power supply unit; the rated active power capacity of a wind power supply unit is equal to the sum of the rated active power capacity of a single wind turbine unit of the generating unit.

[0039] The actual active power generated by unit S1113) is equal to the sum of the actual active power generated by each unit of the conventional power supply unit and the wind power supply unit, respectively.

[0040] Input parameters sent by the S1120 conventional power supply unit:

[0041] S1121) The unit primary frequency regulation target adjustment of a conventional power supply unit is equal to the sum of the unit primary frequency regulation target adjustment of the generating units.

[0042] S1122) Unit joint operation area of ​​conventional power supply unit;

[0043] S1123) Actual frequency regulation of the primary frequency modulation of a conventional power supply unit;

[0044] S1124) The unit primary frequency regulation correction amount of the conventional power supply unit is equal to the actual adjustment amount of the unit primary frequency regulation of the conventional power supply unit when the actual adjustment amount of the primary frequency regulation of each unit of the conventional power supply unit can be measured; otherwise, it is equal to the unit primary frequency regulation target adjustment amount of the conventional power supply unit as described in S1121.

[0045] S1125) The active power regulation dead zone of a conventional power supply unit is equal to the sum of the active power regulation dead zones of the single units of the conventional power supply unit in operation.

[0046] Input parameters sent by the S1130 wind power unit:

[0047] S1131) The actual active power generated by the unit of the wind power supply unit is included in the calculation. It is calculated by the wind power supply unit based on the actual active power generated by the unit and the dead zone of each wind turbine.

[0048] S1132) The actual active power generated by the wind power unit is used as a filter value in the calculation. It is calculated by the wind power unit based on the actual active power generated by the unit and the dead zone of each wind turbine.

[0049] S1133) The possible fluctuation range of active power of wind power unit is a prediction result of the fluctuation range of active power of wind power unit within a certain period of time in the future.

[0050] S1134) The start-up sequence and shutdown sequence of the wind power unit, as well as the corresponding active power fluctuation range sequence, are used to generate start-up and shutdown operation suggestions for the wind turbine.

[0051] S1135) The target adjustment amount for primary frequency regulation of a wind power unit: Based on a comparison with the primary frequency regulation threshold, its value is either 0, or the actual active power generated by the wind power unit multiplied by the grid frequency deviation and then multiplied by the given wind power primary frequency regulation coefficient; the specific calculation is as follows:

[0052] S11351) Calculate the power grid frequency deviation, which is equal to the rated power grid frequency (50Hz) minus the real-time power grid frequency.

[0053] S11352) If the absolute value of the grid frequency deviation is less than or equal to the primary frequency regulation threshold (dispatch given), then the unit primary frequency regulation target adjustment of the wind power unit is equal to 0.

[0054] (S11353) If the absolute value of the grid frequency deviation is greater than the primary frequency regulation threshold, the target adjustment amount of the primary frequency regulation of the wind power unit is equal to the actual value of the active power generated by the wind power unit multiplied by the grid frequency deviation and then multiplied by the wind power primary frequency regulation coefficient (given parameter by the grid).

[0055] The operation of the S2000 conventional power supply unit is described in detail below.

[0056] S2100) determines the unit type of conventional power supply units, including:

[0057] S2110) Hydropower units and thermal power units are classified according to their power source and regulation mechanism;

[0058] S2120) Generator sets and non-generator sets are classified according to different unit states, among which non-generator sets include units in the shutdown state, idling state, no-load state and uncertain state;

[0059] S2130) Based on the different controlled states of active power regulation of the generator set, the generator sets are further divided into:

[0060] S2131) Single-unit open-loop unit, that is, a unit whose actual active power generation value is not subject to any source regulation;

[0061] S2132) A single-unit closed-loop unit is a unit whose actual active power output is adjusted in a closed loop according to the set value or execution value of the single-unit active power, so that the actual active power output of the unit continuously approaches the set value or execution value of the single-unit active power, and eventually stabilizes within the dead zone range of the set value or execution value of the single-unit active power.

[0062] S2133) Units that have AGC enabled, i.e., single-unit closed-loop units, and whose single-unit active power setpoint is allocated and set by unit-level AGC.

[0063] S2134) Generator units that have not been put into AGC, that is, generator units other than those put into AGC, including single-unit open-loop generator units and single-unit closed-loop generator units whose single-unit active power setting value does not accept unit-level AGC allocation and setting.

[0064] S2200) Establish a combined output model for each unit with AGC, and calculate the joint operation zone, joint recommended operation zone, and joint restricted operation zone, including:

[0065] S2210) Determines the recommended operating area, restricted operating area, prohibited operating area, and operating area for each AGC unit, including:

[0066] S2211) The single-unit prohibited operation zone refers to the load area in which the set value of the single unit active power is prohibited from being set (between the upper and lower limits of the single-unit prohibited operation zone); the actual value of the single unit active power is allowed to pass through the single-unit prohibited operation zone, but it is not allowed to stay or remain in the single-unit prohibited operation zone for a long time.

[0067] S2212) The recommended operating range for a single unit refers to the load area where the unit operates with high efficiency and stability when the actual active power of the unit is within the range (between the upper and lower limits of the recommended operating range for a single unit). Where conditions permit, the set value of the active power of the unit should be set within the recommended operating range for a single unit.

[0068] S2213) The single-unit restricted operating zone refers to the load area where it is generally not recommended to set the single-unit active power setting value of the unit within the range (between the upper and lower limits of the single-unit restricted operating zone). However, when the total active power setting value of all units cannot be allocated in any way to ensure that the single-unit active power setting value of all units is within the recommended single-unit operating zone, it is also allowed to set the single-unit active power setting value of the unit within the single-unit restricted operating zone.

[0069] S2214) Single-machine operation area, the single-machine recommended operation area described in S2212 and the single-machine restricted operation area described in S2213 are collectively referred to as the single-machine operation area;

[0070] S2215) The low-load area of ​​conventional thermal power units is the single-unit prohibited operation zone. The single-unit prohibited operation zone of thermal power units is approximately 0-50% of the rated capacity. The remaining part of the rated capacity after deducting the single-unit prohibited operation zone is the single-unit recommended operation zone.

[0071] S2216) The range of the single-unit restricted operation zone, single-unit prohibited operation zone, and single-unit recommended operation zone of conventional hydropower units varies with the real-time head changes of the hydropower station and are the routine operating parameters of the units;

[0072] (S2217) The rated capacity of a conventional power unit, after deducting the prohibited and restricted operating areas, is the recommended operating area. The rated capacity of a hydropower unit varies with the real-time head changes of the hydropower station.

[0073] S2220) Establish a recommended combined output model for units with AGC (Automatic Generation Control) and calculate the joint recommended operating area for units with AGC, including:

[0074] S2221) Based on the rated capacity of each unit, the prohibited operating area of ​​a unit, the restricted operating area of ​​a unit, and the recommended operating area of ​​a unit, the units that have AGC are grouped together. Units with the same parameters are grouped together.

[0075] S2222) For each group of units, based on the distribution of the output of each unit in the recommended operating area of ​​each unit, calculate the group recommended operating area of ​​each group of units under various recommended distribution methods: Based on the number of recommended operating areas of each unit and the number of units in each group, determine various recommended distribution methods, and then calculate the group recommended operating area of ​​each group of units under each recommended distribution method;

[0076] S2223) For all units engaged in AGC, based on the different distribution patterns of each group of units in the single-machine recommended operating area and the corresponding group recommended operating areas of each group of units, calculate the combined recommended operating areas of the AGC-engaged units under various recommended distribution patterns and different combinations of patterns; including: based on the unit grouping results of S2221 and the different distribution patterns of each group of units in the single-machine recommended operating area, list the various combinations of the various recommended distribution patterns of each group of units engaged in AGC as described in S2222, and then calculate the combined recommended operating areas of the AGC-engaged units under each recommended distribution combination;

[0077] S2224) Take the union of the combined recommended operating areas of the AGC units under all recommended distribution combinations obtained in S2223 to obtain the joint recommended operating area of ​​the AGC units.

[0078] S2225) Based on the combined recommended operating areas of the AGC units under various recommended distribution combinations obtained in S2223, determine the available recommended distribution combinations of the AGC units under each output interval within the combined recommended operating area, including: sorting the upper and lower limits of the combined recommended operating area corresponding to each recommended distribution combination obtained in S2223, then dividing the combined recommended operating area of ​​the AGC units obtained in S2224 according to the sorted upper and lower limits to obtain multiple output intervals, and then comparing each output interval with the combined recommended operating areas corresponding to various recommended distribution combinations of the AGC units to obtain the available recommended distribution combinations under each output interval.

[0079] S2230) Establish a limited combined output model for the AGC units and calculate the combined operating range and combined limited operating range of the AGC units, including:

[0080] S2231) Group the units that have been put into AGC according to the method described in S2221;

[0081] S2232) For each group of units, based on the distribution of the output of each unit in each single unit operating area, calculate the group operating area of ​​each group of units under various distribution methods, including: determining various distribution methods based on the number of single unit operating areas and the number of units in each group of units, and then calculating the group operating area of ​​each group of units under each distribution method;

[0082] S2233) For all units with AGC, based on the different distribution patterns of each group of units in the single-machine operating area and the corresponding group operating areas of each group of units, calculate the combined operating areas of the units with AGC under various distribution patterns and different combinations of patterns; including: based on the grouping results of S2231 and the different distribution patterns of each group of units in each single-machine operating area, list the various combinations of the various distribution patterns of each group of units with AGC as described in S2232, and then calculate the combined operating area of ​​the units with AGC under each distribution combination pattern;

[0083] S2234) Calculate the joint operation area and joint restricted operation area of ​​the AGC unit, including: taking the union of the combined operation areas of the AGC unit under all distribution combination modes obtained in S2233 to obtain the joint operation area of ​​the AGC unit, and then subtracting the joint suggested operation area obtained in S2224 from the joint operation area of ​​the AGC unit to obtain the joint restricted operation area of ​​the AGC unit.

[0084] S2235) Based on the combined operating areas of the AGC units under various distribution combinations obtained in S2233, determine the available restricted distribution combination methods for each output interval within the joint restricted operating area, including: sorting the upper and lower limits of the combined operating area corresponding to each distribution combination method obtained in S2233, then dividing the joint restricted operating area of ​​the AGC units obtained in S2234 according to the sorted upper and lower limits to obtain multiple output intervals, and then comparing each output interval with the combined operating area corresponding to various distribution combinations of the AGC units to obtain the available restricted distribution combination methods under each output interval.

[0085] S2240) Determines the current single-unit AGC active power allocation value for each unit, including:

[0086] (S2241) For units with AGC in operation, the active power allocation value of a single unit AGC is allocated by the unit-level AGC.

[0087] S2242) For single-unit closed-loop units without AGC, the active power allocation value of single-unit AGC tracks the active power set value of single unit.

[0088] (S2243) For single-unit open-loop generator sets that have not been put into AGC, the single-unit AGC active power allocation value tracks the single-unit active power set value, while the single-unit active power set value is assigned by the single-unit active power actual value. That is, when the single-unit active power set value is not equal to the single-unit active power actual value, and the absolute value of the difference between the two is greater than the single-unit active power adjustment dead zone, the single-unit active power actual value is written into the single-unit active power set value.

[0089] S2250) The joint recommended operating area of ​​the AGC units obtained in S2224 is added to the active power allocation value of the individual AGC units that are not in AGC units to obtain the joint recommended operating area of ​​the conventional power supply units, which provides a reference for the automatic control of active power of conventional power supply units.

[0090] S2260) The combined operation zone of the AGC units obtained in S2234 is added to the active power allocation values ​​of the individual AGC units that are not in operation to obtain the combined operation zone of the conventional power supply units, which provides a reference for the automatic control of active power of conventional power supply units and the comprehensive control of complementary integrated power supplies.

[0091] S2270) The combined restricted operating area of ​​the AGC units obtained in S2234 is added to the active power allocation values ​​of the individual AGC units that are not in use to obtain the combined restricted operating area of ​​the conventional power supply units, which provides a reference for the automatic control of active power of conventional power supply units.

[0092] In step S2300, the target active power value of the conventional power supply unit is compared with the unit joint operation zone described in step S2260. If the target active power value is included in the unit joint operation zone, the target active power value is feasible, and the remaining steps of step S2300 are skipped. If the target active power value is not included in the unit joint operation zone, the target active power value is infeasible, and an operational suggestion is sought to make the target active power value feasible.

[0093] S2320) Seeking operational recommendations to make the target active power per unit of conventional power sources feasible by putting units not currently under AGC control into AGC control, including:

[0094] S2321) Set the loop variable i1, and set the initial value of i1 to 1;

[0095] S2322) Determine i1. If i1 is greater than the number of units not in AGC, terminate S2320. Otherwise, continue to execute the following steps to find an operational suggestion to put i1 units not in AGC into AGC control so that the unit active power target value of the conventional power supply becomes feasible.

[0096] S2323) List all possible combinations of selecting i1 units from all units that have not been put into AGC, for a total of C(j1,i1) combinations, where C() is the combination number function and j1 is the number of units that have not been put into AGC.

[0097] S2324) According to the C(j1,i1) combination methods listed in S2323, the units that have not been put into AGC are assumed to be put into AGC in each method, and the unit joint operation area and the unit joint recommended operation area are recalculated using the S2200 method. Then, based on the newly calculated unit joint operation area, the feasibility of the unit active power target value is reassessed using the S2300 method.

[0098] (S2325) Based on the calculation results of S2324, if there is one and only one way to regenerate the unit joint operation area that makes the unit active power target value feasible, then generate the operation suggestion "put the units selected by this method that have not been put into AGC into AGC". If there are multiple ways to regenerate the unit joint operation area that make the unit active power target value feasible, then generate the operation suggestion "put the units selected by the corresponding method that have not been put into AGC into AGC" according to these methods respectively, and jump to step S2326 to continue execution. If there is no way to regenerate the unit joint operation area that makes the unit active power target value feasible, then i1 = i1 + 1, and then jump to step S2322 to judge whether i1 is greater than the number of units that have not been put into AGC, and decide whether to execute the subsequent steps based on the judgment result.

[0099] S2326) Prioritize the multiple operation suggestions generated in S2325. The priority is based on the combination of i1 units selected from the units that have not been put into AGC, and the range of the changed unit joint operation area and unit joint suggested operation area corresponding to each operation suggestion obtained in S2324. The priority criteria are as follows, from highest to lowest importance: whether the unit active power target value belongs to the unit joint suggested operation area (yes is better than no), the number of hydropower units (the more the better) and thermal power units (the fewer the better) selected in the unit, and the absolute value of the difference between the unit active power target value and the boundary or segment boundary of the unit joint operation area (the larger the better).

[0100] S2330) Seeking operational recommendations to make the unit active power target value of conventional power sources feasible by converting non-generating units to generating mode and engaging AGC, including:

[0101] S2331) Set the loop variable i2, and set the initial value of i2 to 1;

[0102] S2332) Determine i2. If i2 is greater than the number of available but not generating units, terminate S2330. Otherwise, continue to execute the following steps to find an operational suggestion to convert i2 available but not generating units into generating state and put them into AGC so that the unit active power target value of the conventional power source becomes feasible.

[0103] S2333) List all possible combinations of selecting i2 units from all available but not generating units, totaling C(j2,i2) combinations, where j2 is the number of available but not generating units;

[0104] S2334) According to the C(j2,i2) combination methods listed in S2333, the available but non-generating units selected by each method are assumed to be generating units and put into AGC. The unit joint operation area and the unit joint recommended operation area are recalculated using the S2200 method. Then, based on the newly calculated unit joint operation area, the feasibility of the unit active power target value is reassessed using the S2300 method.

[0105] (S2335) Based on the calculation results of S2334, if there is one and only one way to regenerate the unit joint operation area that makes the unit active power target value feasible, then generate the operation suggestion "convert the available but non-generating units selected by this method into generating state and put them into AGC". If there are multiple ways to regenerate the unit joint operation area that make the unit active power target value feasible, then generate operation suggestions according to these methods respectively "convert the available but non-generating units selected by the corresponding method into generating state and put them into AGC", and jump to step S2336 to continue execution. If there is no way to regenerate the unit joint operation area that makes the unit active power target value feasible, then i2 = i2 + 1, and then jump to step S2332 to judge whether i2 is greater than the number of available but non-generating units, and decide whether to execute the subsequent steps based on the judgment result.

[0106] S2336) Prioritizes the multiple operational suggestions generated in S2335. The prioritization is based on the combination of i2 units selected from available but not generating units for each operational suggestion, and the changed unit joint operation area and unit joint suggested operation area range corresponding to each operational suggestion obtained in S2334. These prioritization criteria, in descending order of importance, are: the number of hydropower units (the more the better) and thermal power units (the fewer the better) selected, whether the unit active power target value (yes is better than no) belongs to the unit joint suggested operation area, and the absolute value of the difference between the unit active power target value and the boundary or segment boundary of the unit joint operation area (the larger the better). The first two criteria are of very similar importance.

[0107] S2340) Seeking operational recommendations to make the target active power per unit of conventional power source feasible by switching generating units to a non-generating state, including:

[0108] S2341) Set the loop variable i3, and set the initial value of i3 to 1;

[0109] S2342) Determine i3. If i3 is greater than the number of generating units, terminate S2340. Otherwise, continue to execute the following steps to find an operational suggestion to convert i3 generating units to non-generating state so that the unit active power target value of the conventional power source becomes feasible.

[0110] S2343) List all possible combinations of selecting i3 units from all generating units, totaling C(j3,i3) combinations, where j3 is the number of generating units;

[0111] S2344) According to the C(j3,i3) combination methods listed in S2343, the generating units selected in each method are assumed to be in a non-generating state, and the unit joint operation area and unit joint recommended operation area are recalculated using the S2200 method. Then, based on the newly calculated unit joint operation area, the feasibility of the unit active power target value is reassessed using the S2300 method.

[0112] (S2345) Based on the calculation results of S2344, if there is one and only one way to regenerate the unit joint operation area that makes the unit active power target value feasible, then generate the operation suggestion "convert the generating unit selected by this method to non-generating state". If there are multiple ways to regenerate the unit joint operation area that make the unit active power target value feasible, then generate the operation suggestion "convert the generating unit selected by the corresponding method to non-generating state" according to these methods respectively, and jump to step S2346 to continue execution. If there is no way to regenerate the unit joint operation area that makes the unit active power target value feasible, then i3 = i3 + 1, and then jump to step S2342 to judge whether i3 is greater than the number of generating units, and decide whether to execute the subsequent steps based on the judgment result.

[0113] S2346) Prioritizes the multiple operation suggestions generated in S2345. The priority is based on the combination of i3 generating units selected from the generating units for each operation suggestion, and the changed unit joint operation area and unit joint suggested operation area range corresponding to each operation suggestion obtained in S2344. The priority criteria are as follows, from highest to lowest importance: the number of units without AGC (the more the better) and units with AGC (the fewer the better), whether the unit active power target value belongs to the unit joint suggested operation area (yes is better than no), and the absolute value of the difference between the unit active power target value and the boundary or segment boundary of the unit joint operation area (the larger the better).

[0114] S2350) classifies the operation suggestions generated by S2320, S2330, and S2340, and displays them in an orderly manner according to the priority obtained by S2326, S2336, and S2346 (when there is more than one operation suggestion of a certain type) to assist operators in decision-making.

[0115] S2400) calculates the active power allocation value of a single AGC unit in the AGC unit, including:

[0116] S2410) Calculates the active power allocation value of the unit AGC of the conventional power supply, including:

[0117] S2411) Calculate the active power allocation value of each AGC unit that is not put into operation. The method for obtaining the active power allocation value of each AGC unit is as described in S2240.

[0118] S2412) Subtract the individual AGC active power allocation values ​​of all AGC units that have not been put into operation from the unit active power target value to obtain the unit AGC active power allocation value.

[0119] S2420 initiates the unit-level AGC allocation process for the conventional power supply when certain conditions are met. These triggering conditions include:

[0120] S2421) The sum of the active power allocation values ​​of the individual AGC units of all AGC units is not equal to (greater than or less than) the active power allocation value of the unit AGC obtained in S2410;

[0121] S2422) The combined output model or joint operation zone, joint recommended operation zone, and joint restricted operation zone of the AGC unit have changed;

[0122] S2423) Units that have engaged AGC are deactivated from unit-level AGC, or units that have not engaged AGC are activated to engage unit-level AGC;

[0123] (S2424) Hydropower units with AGC (Automatic Generation Control) may experience changes in their rated active power capacity, prohibited operating area, restricted operating area, and recommended operating area due to changes in the hydropower station's head.

[0124] S2430) Determine the target distribution combination of the AGC units to be put into operation, including:

[0125] S2431) If the active power allocation value of the unit AGC obtained in S2410 is within the joint recommended operating area of ​​the AGC unit, then based on the available recommended distribution combination methods of the AGC unit under each output range in the joint recommended operating area obtained in S2225, determine all the recommended distribution combination methods of the AGC unit that can satisfy the active power allocation value of the unit AGC and use them as available distribution combination methods; otherwise, based on the available restricted distribution combination methods of the AGC unit under each output range in the joint restricted operating area obtained in S2235, determine all the restricted distribution combination methods of the AGC unit that can satisfy the active power allocation value of the unit AGC and use them as available distribution combination methods.

[0126] S2432) Select the combination with the fewest units in the single-unit restricted operation zone from all available distribution combinations obtained in S2431, and use it as the available distribution combination.

[0127] (S2433) If there are more than one available distribution combination method obtained in S2432, then it is further compared with the current distribution combination method, and the distribution combination method with the fewest number of units crossing the single unit prohibited operation zone is selected as the target distribution combination method. If there are multiple distribution combination methods with the same number of units crossing the single unit prohibited operation zone, then all of them are selected as the target distribution combination methods.

[0128] S2440) Determine the target output combination mode for the AGC unit, including:

[0129] S2441) List all output combinations that can satisfy the target distribution combination obtained in S2430 when the AGC unit is put into operation;

[0130] S2442) Compare all the output combinations listed in S2441 with the current operating area of ​​each unit in AGC, and select the output combination with the fewest number of times the unit crosses the single unit prohibited operating area as the target output combination.

[0131] S2443) If there are more than one target output combination method obtained from S2442, the target output combination methods obtained from S2442 are weighted and applied to the adverse operating condition priority of the AGC unit. The weighting method is to sum the adverse operating condition priority of each unit in the restricted operating area, and select the output combination method with the fewest weighted units in the single-unit restricted operating area as the target output combination method. The adverse operating condition priority of the unit can be set manually or automatically. When the manual setting method is used, the adverse operating condition priority is set manually by the operator. When the automatic setting method is used, the system automatically performs weighted statistics on the operating time of each unit in the restricted operating area and the prohibited operating area since the last maintenance period, sorts the weighted statistics time of each unit, and then sets the automatic priority in order of weighted time from shortest to longest and from highest to lowest.

[0132] (S2443) If there are more than one target output combination method obtained from S2443, after weighting the adverse operating conditions of the AGC units, select the output combination method with the fewest weighted units crossing the single-unit prohibited operation zone from the target output combination methods obtained from S2443 as the target output combination method.

[0133] S2450) Based on the target output combination method of the AGC units, the active power allocation for each AGC unit is performed, including:

[0134] S2451) Compare the target operating area of ​​each unit with the current operating area under the target output combination mode. For units whose single unit operating area has changed, the original single unit AGC active power allocation value is corrected to the limit value of the upper and lower limits of the target operating area that is closest to the current single unit operating area. Thereafter, the original single unit AGC active power allocation value used in S2452, S2453 and S2454 are all the corrected values.

[0135] S2452) The result of subtracting the sum of the original single-unit AGC active power allocation values ​​of all AGC units put into operation from the AGC active power allocation value of the calculation unit is used as the value to be allocated;

[0136] S2453) If the value to be allocated obtained from S2452 is greater than 0, then calculate the absolute value of the difference between the original single-unit AGC active power allocation value of each AGC unit and the upper limit of the target operating area, and use it as the single-unit allocable value. If the value to be allocated obtained from S2452 is less than 0, then calculate the absolute value of the difference between the single-unit AGC active power allocation value of each AGC unit and the lower limit of the target operating area, and use it as the single-unit allocable value.

[0137] S2454) The value to be allocated obtained in S2452 is allocated to each AGC unit in a manner that is proportional to the single-unit allocable value of each AGC unit obtained in S2453. The allocation result is then superimposed on the original single-unit AGC active power allocation value of each unit to obtain the single-unit AGC active power allocation value of each AGC unit.

[0138] S2500) Conventional Power Unit Active Power Regulation of Each Individual Closed-Loop Unit, including:

[0139] S2510) Determine the active power setpoint for each individual closed-loop generator unit, including:

[0140] (S2511) For single-unit closed-loop generator units that have not been put into AGC, the active power setting value of a single unit shall be manually set by the operator.

[0141] (S2512) For hydropower and thermal power units with AGC, the active power setting value of a single unit is equal to the active power allocation value of a single unit with AGC.

[0142] S2520) The active power setpoint of each unit in the closed-loop unit of the conventional power supply unit is superimposed with the primary frequency regulation correction to obtain the active power execution value of each unit; in order to prevent the secondary frequency regulation from treating the adjustment of the primary frequency regulation as a power disturbance and pulling it back, as well as the problem of conflict between the secondary frequency regulation and the primary frequency regulation.

[0143] The active power control system of each closed-loop unit in the S2530 conventional power unit uses the active power execution value of a single unit as the target. It calculates the deviation between the actual active power generated by a single unit and the active power execution value of a single unit, and outputs a continuous signal to adjust the actual active power generated by the unit based on the calculation result, so that the actual active power generated by the unit tends to the active power execution value of the single unit, and finally stabilizes within the adjustment dead zone range of the active power execution value of the single unit.

[0144] The operation of the S3000 wind power unit is described below, including:

[0145] S3100 addresses the characteristics of wind power generation, such as non-adjustable active power and fluctuating and intermittent output power. It generates the possible fluctuation range of active power for each unit within a future time period T1 and calculates the possible fluctuation range of unit active power for the wind power generation. T1 is a manually set parameter, designed to allow sufficient time for possible start-up and shutdown operations of the wind turbine units, including:

[0146] S3110) If a power prediction system is deployed, the possible fluctuation range of active power of each wind turbine in the future time T1 is output by the power prediction function. The so-called power prediction system refers to a system that uses physical methods, regression methods, time series methods, neural network methods, deep learning methods, etc. to build a prediction model based on past power, historical data of the same period, seasonal changes, weather forecasts, etc., to predict the future active power change trend of wind power. In order to improve the accuracy and availability of prediction results, the prediction system usually adopts the interval prediction method, that is, predicts the maximum and minimum values ​​that the active power change may reach.

[0147] S3120) If a power prediction system is not deployed, the following methods shall be used, including:

[0148] (S3121) For wind turbine generators generating electricity, the current power multiplied by the upper limit prediction parameter is used as the upper limit of the possible fluctuation range of active power in the future time T1, and the current power multiplied by the lower limit prediction parameter is used as the lower limit of the possible fluctuation range of active power, where the upper limit prediction parameter > 1 > the lower limit prediction parameter > 0. Due to the difficulty of wind power forecasting, the difference between the upper limit prediction parameter and the lower limit prediction parameter is generally large, so as to form a large possible fluctuation range of active power. This possible fluctuation range of active power increases with the increase of T1.

[0149] S3122) For wind turbine units that do not generate electricity, the possible fluctuation range of active power in the future T1 time period of a generator unit with the same or similar performance (especially the same single unit capacity) shall be used as the possible fluctuation range of active power in the future T1 time period of the unit.

[0150] (S3123) For the upper limit prediction parameter and lower limit prediction parameter mentioned in S3121, fixed values ​​can be used, or different parameters can be used at different time points. Considering the complexity of wind power prediction, it is generally recommended to use the parameter setting method with fixed values.

[0151] S3130) Calculate the possible fluctuation range of the unit active power of the wind power unit within the future time period T1, including:

[0152] S3131) The upper limit of the possible fluctuation range of the active power of all generator sets of the wind power unit within the future time T1 is summed up, which is the upper limit of the possible fluctuation range of the active power of the wind power unit within the future time T1.

[0153] S3132) The lower limit of the possible fluctuation range of the active power of all generator sets of the wind power unit within the future time T1 is summed up, which is the lower limit of the possible fluctuation range of the active power of the wind power unit within the future time T1.

[0154] S3200 generates start-up and shutdown sequences for wind turbine units, including:

[0155] S3210) Generate the shutdown sequence of the wind turbine units that generate electricity respectively. The priority is calculated according to the duration of the unit in the generating state. The longer the duration of the generating state, the higher the priority.

[0156] S3220) generates the start-up sequence of available but non-generating wind turbine units respectively. The priority is calculated based on the duration of the unit in the non-generating state. The longer the duration of the non-generating state, the higher the priority. The so-called available but non-generating units are in contrast to unavailable units that cannot be switched to generating state due to equipment failure or maintenance work.

[0157] S3300 generates a sequence of possible active power fluctuation ranges corresponding to the start-up and shutdown sequences for each wind turbine, including:

[0158] S3310) Generates a sequence of possible active power fluctuations corresponding to the start-up sequence of wind turbine generators:

[0159] S3311) Set variable u1, with an initial value of 1;

[0160] S3312) Add the possible fluctuation range of active power of the wind power unit obtained in S3130 to the possible fluctuation range of active power of the unit ranked u1 in the wind turbine start-up sequence to obtain the range of ranked u1 in the possible fluctuation range sequence of active power corresponding to the wind turbine start-up sequence. The upper limit of the range of ranked u1 is equal to the upper limit of the possible fluctuation range of active power of the wind power unit obtained in S3130 plus the upper limit of the possible fluctuation range of active power of the unit ranked u1 in the wind turbine start-up sequence. The lower limit of the range of ranked u1 is equal to the lower limit of the possible fluctuation range of active power of the wind power unit obtained in S3130 plus the lower limit of the possible fluctuation range of active power of the unit ranked u1 in the wind turbine start-up sequence.

[0161] S3313) Determine whether u1 is equal to the wind turbine start-up sequence length. If u1 is equal to the wind turbine start-up sequence length, terminate step S3310. Otherwise, execute u1 = u1 + 1 and then continue with the subsequent steps.

[0162] (S3314) The range of sorted u1-1 in the sequence of possible fluctuation ranges of active power corresponding to the wind turbine start-up sequence is added to the possible fluctuation range of active power of wind turbines sorted u1 in the wind turbine start-up sequence to obtain the range of sorted u1 in the sequence of possible fluctuation ranges of active power corresponding to the wind turbine start-up sequence. The upper limit of the range of sorted u1 is equal to the upper limit of the range of sorted u1-1 plus the upper limit of the possible fluctuation range of active power of wind turbines sorted u1 in the wind turbine start-up sequence, and the lower limit of the range of sorted u1 is equal to the lower limit of the range of sorted u1-1 plus the lower limit of the possible fluctuation range of active power of wind turbines sorted u1 in the wind turbine start-up sequence.

[0163] (S3315) Jump to step S3313 until u1 equals the start-up sequence length of the wind turbine unit and end step S3310.

[0164] For example, if the active power of the wind power unit may fluctuate within the time period T1, and the wind turbine startup sequence is [Unit 1, Unit 3, Unit 2], then the active power of wind turbines 1, 2, and 3 may fluctuate within the ranges of 40-60, 50-70, and 40-80MW, respectively. The active power fluctuation range sequence corresponding to the wind turbine startup sequence is [(350,420), (390,500), (440,570)].

[0165] S3320) generates a sequence of possible active power fluctuations corresponding to the shutdown sequence for wind turbine units, including:

[0166] S3321) Set variable u2, with an initial value of 1;

[0167] (S3322) Subtract the possible fluctuation range of active power of the wind power unit obtained in S3130 from the possible fluctuation range of active power of the wind turbine unit ranked u2 in the wind power shutdown sequence to obtain the range of ranked u2 in the possible fluctuation range sequence of active power corresponding to the wind power shutdown sequence. The upper limit of the range of ranked u2 is equal to the upper limit of the possible fluctuation range of active power of the wind power unit obtained in S3130 minus the upper limit of the possible fluctuation range of active power of the wind turbine unit ranked u2 in the wind power shutdown sequence. The lower limit of the range of ranked u2 is equal to the lower limit of the possible fluctuation range of active power of the wind power unit obtained in S3130 minus the lower limit of the possible fluctuation range of active power of the wind turbine unit ranked u2 in the wind power shutdown sequence.

[0168] S3323) Determine whether u2 is equal to the length of the wind power shutdown sequence. If u2 is equal to the length of the wind power shutdown sequence, terminate step S3320. Otherwise, execute u2 = u2 + 1 and then continue with the subsequent steps.

[0169] (S3324) Subtract the possible fluctuation range of the active power of the wind turbine generator in the sequence of possible fluctuation range of active power corresponding to the wind power shutdown sequence from the range of sorted u2-1 in the sequence of possible fluctuation range of active power ...

[0170] (S3325) Jump to step S3323 until u2 equals the length of the wind power shutdown sequence and end step S3320.

[0171] S3400) The actual active power generated by the unit of the wind power source is included in the calculation of the following quantities:

[0172] S3410) The calculation quantity of the actual active power generated by the wind power unit is initially set to be equal to the actual active power generated by the unit.

[0173] S3420) The dead zones of the output of each unit of the wind power unit are accumulated by the scheduling given or manually set to obtain the unit output dead zone of the wind power unit.

[0174] S3430) Compares the actual active power generated by wind power units in calculations at fixed intervals with the actual active power generated by wind power units in the current period, including:

[0175] S3431) If the absolute value of the difference between the two is less than or equal to the dead zone of the wind power unit, the actual value of the active power generated by the wind power unit remains unchanged in the calculation.

[0176] (S3432) If the absolute value of the difference between the two is greater than the dead zone of the wind power unit, then the actual active power generated by the wind power unit is included in the calculation and is equal to the actual active power generated by the wind power unit in the current period.

[0177] For example, if the dead zone of a wind power unit is 20MW, and the actual active power generated by the wind power unit is included in the calculation, the actual active power generated by the unit is 300MW. Due to power fluctuations, the actual active power generated by the unit changes to 305MW. Since the absolute value of the difference between the actual active power generated by the wind power unit (300MW) and the actual active power generated by the unit (305MW) is 5MW, which is less than the dead zone of 20MW, the actual active power generated by the wind power unit remains unchanged at 300MW. Later, due to further power fluctuations, the actual active power generated by the unit changes to 321MW. Thus, the absolute value of the difference between the actual active power generated by the wind power unit (300MW) and the actual active power generated by the unit (321MW) changes to 21MW, which is greater than the dead zone of 20MW. Therefore, the actual active power generated by the wind power unit changes to 321MW based on the actual active power generated by the unit.

[0178] The S3500 calculates the filtered values ​​of the actual active power generated by the wind power unit, which are used in the calculation.

[0179] S3510) The filter value for the calculation of the actual active power generated by the wind power unit is initially set to be equal to the actual active power generated by the unit.

[0180] S3520) Calculates the filtering threshold for the actual active power generated by a wind power unit, including:

[0181] S3521) Set the scaling factor λ, where λ > 1;

[0182] S3522) The filtering threshold for the actual active power generated by the wind power unit is equal to the dead zone of the unit output described in S3420 multiplied by λ. In this embodiment, λ is assumed to be 3, so the filtering threshold is equal to 3 times the dead zone of the unit output.

[0183] S3530) Compares the filtered value of the actual active power generated by the wind power unit with the actual active power generated by the wind power unit in the current period at a fixed period, including:

[0184] S3531) If the absolute value of the difference between the two is less than or equal to the filtering threshold obtained in S3522, the actual active power generated by the wind power unit will remain unchanged in the filtered value of the calculation quantity.

[0185] (S3532) If the absolute value of the difference between the two is greater than the filtering threshold obtained in S3522, then the filtered value of the active power generated by the wind power unit is equal to the active power generated by the wind power unit in the current period.

[0186] The operation of the S4000 complementary integrated unit is given below.

[0187] The complementary integrated unit allocates the target active power value of the conventional power unit, sets the primary frequency regulation coefficient of the conventional power unit, and calculates start-up and shutdown operation suggestions for the wind power unit to meet the regulation requirements of the total active power setpoint and primary frequency regulation of the complementary integrated power supply. The control model is as follows: Figure 1 As shown, the influence of primary frequency regulation is excluded in the control model to intuitively demonstrate the regulation effect. However, those skilled in the art will readily understand that even if the primary frequency regulation response of conventional power sources and wind power sources is introduced, it will not affect the implementation effect of the method of this invention.

[0188] The regulation of conventional power supply units by complementary integrated units includes:

[0189] S4100 calculates the target value of the active power of the conventional power unit, which is equal to the total active power set value of the complementary integrated power supply minus the actual active power generated by the wind power unit obtained by S3400.

[0190] S4200 compares the target active power value of the conventional power supply unit with the unit joint operation area described in S2260, resulting in two possible outcomes:

[0191] S4210) When the target value of the active power of the unit is included in the joint operation area of ​​the unit, the target value of the active power of the unit is feasible. Therefore, according to the method of S2000, the target value of the active power of the unit obtained in S4100 is allocated at the unit level by AGC.

[0192] (S4220) When the target value of active power of a unit is not included in the joint operation area of ​​the unit, the target value of active power of the unit is not feasible. In this case, it is necessary to find an operation suggestion that makes the target value of active power of the unit feasible through subsequent steps.

[0193] S4200) seeks operational recommendations for conventional power supply units, with the logic diagram as follows: Figure 2 As shown, it includes:

[0194] S4410) Following the method of S2320, find operational recommendations that would make the target active power value of the conventional power source feasible by putting the non-AGC units into AGC control, and prioritize the operational recommendations.

[0195] S4220) Following the method of S2330, find operational recommendations that make the target active power value of the conventional power source unit feasible by converting the non-generating unit into a generating state and putting it into AGC, and sort the priority of the operational recommendations.

[0196] S4230) Following the method of S2340, find operational recommendations that make the target active power value of the conventional power source unit feasible by switching the generating unit to a non-generating state, and prioritize the operational recommendations.

[0197] The S4300 performs active power regulation on each closed-loop unit of the conventional power supply unit, including:

[0198] The S4310 complementary integrated unit calculates the primary frequency regulation coefficient of the conventional power supply unit, including:

[0199] S4311) The primary frequency scaling factor of the complementary integrated unit for calculating the conventional power unit is equal to (rated active power capacity of the wind power unit + rated active power capacity of the conventional power unit) ÷ rated active power capacity of the conventional power unit. Assuming the rated active power capacity of the conventional power unit is 200MW and the rated active power capacity of the wind power unit is 100MW, then the primary frequency scaling factor of the conventional power unit is (200+100) / 200=1.5.

[0200] S4312) The complementary integrated unit calculates the primary frequency regulation coefficient of the conventional power unit, which is equal to the primary frequency regulation coefficient of the conventional power unit issued by the grid multiplied by the primary frequency scaling coefficient obtained by S4311.

[0201] (S4313) When each unit of the conventional power unit actually performs primary frequency regulation, it adjusts according to the primary frequency regulation coefficient obtained in S4312. Taking S4911 as an example, if the grid frequency has a certain deviation, the primary frequency regulation of a certain unit of the conventional power unit is originally 40MW. In order to undertake the primary frequency regulation task of wind power, the primary frequency regulation of the unit is amplified to 40×1.5=60MW.

[0202] S4320) The active power of each single closed-loop generator unit is regulated according to the S2500 method. When calculating the primary frequency regulation related parameters, the primary frequency regulation coefficient obtained in S4912 is used.

[0203] The regulation of the wind power unit by the complementary integrated unit includes:

[0204] S4400) Calculates the active power capacity range of the wind power unit within the future time period T1, where T1 is the artificially set parameter mentioned in S3100, including:

[0205] S4410) Calculate the lower limit of the active power capacity range of the wind power unit at each time point in the future time period T1, or the lower limit of each continuous interval of the capacity range, including:

[0206] S4411) If the dispatcher issues the active power plan curve of the complementary integrated power source in advance, then the total active power set value of the complementary integrated power source at each time point in the future T1 time period is subtracted from the upper limit of the joint operation area of ​​the conventional power unit obtained by S2260 (when the joint operation area only includes one continuous section) or the upper limit of each continuous section of the joint operation area (when the joint operation area includes multiple continuous sections). This is the lower limit of the unit active power capacity of the wind power unit at each time point in the future T1 time period (when the joint operation area only includes one continuous section) or the lower limit of the capacity of each continuous section of the joint operation area (when the joint operation area includes multiple continuous sections).

[0207] S4412) If the dispatcher does not issue the active power plan curve of the complementary integrated power source in advance, then the total active power set value of the current complementary integrated power source is subtracted from the upper limit of the joint operation area of ​​the conventional power unit obtained by S2260 (when the joint operation area only includes one continuous section) or the upper limit of each continuous section of the joint operation area (when the joint operation area includes multiple continuous sections). This is the lower limit of the unit active power capacity of the wind power unit at each time point in the future T1 time (when the joint operation area only includes one continuous section) or the lower limit of each continuous section of the capacity capacity (when the joint operation area includes multiple continuous sections).

[0208] S4420) Calculate the upper limit of the active power capacity of each wind power unit at each time point in the future time period T1, or the upper limit of each continuous interval of the capacity, including:

[0209] (S4421) If the dispatcher issues the active power plan curve of the complementary integrated power source in advance, then the total active power set value of the complementary integrated power source at each time point in the future T1 time period is subtracted from the lower limit of the joint operation area of ​​the conventional power unit obtained by S2260 (when the joint operation area only includes one continuous section) or the lower limit of each continuous section of the joint operation area (when the joint operation area includes multiple continuous sections). This is the upper limit of the unit active power capacity of the wind power source unit at each time point in the future T1 time period (when the joint operation area only includes one continuous section) or the upper limit of the capacity of each continuous section (when the joint operation area includes multiple continuous sections).

[0210] S4422) If the dispatcher does not issue the active power plan curve of the complementary integrated power source in advance, then the total active power set value of the current complementary integrated power source is subtracted from the lower limit of the joint operation area of ​​the conventional power unit obtained by S2260 (when the joint operation area only includes one continuous section) or the lower limit of each continuous section of the joint operation area (when the joint operation area includes multiple continuous sections). This is the upper limit of the active power capacity of the wind power unit at each time point in the future T1 time (when the joint operation area only includes one continuous section) or the upper limit of each continuous section of the capacity (when the joint operation area includes multiple continuous sections).

[0211] (S4430) The active power capacity range of the wind power unit within the future time period T1 is the intersection of the active power capacity ranges of the wind power unit at each time point within the future time period T1. This range may be a continuous interval or composed of multiple continuous intervals. Assuming that the total active power setpoint gradually decreases from 900MW to 800MW and then gradually increases to 1000MW within the future time period T1, with the total active power setpoints at several time points being 900, 850, 800, 950, and 1000MW respectively, the joint operation zone of the conventional power unit is (300, 60...). If 0)∪(700,950), then the active power capacity range of the wind power unit at each time point in the future time T1 is (-50,200)∪(300,600), (-100,150)∪(250,550), (-150,100)∪(200,500), (0,250)∪(350,650), and (50,300)∪(400,700). Taking the intersection of the above ranges, we can obtain the active power capacity range of the wind power unit in the future time T1 as (50,100)∪(400,500).

[0212] S4500) calculates the quantified value of the mismatch between the current wind power unit's on / off status and the setpoint of the total active power of the complementary integrated power supply within the future time T1. The calculation logic of this step, along with subsequent steps S4600 and S4700, is as follows: Figure 3 As shown, it includes:

[0213] S4510) Calculate the mismatch degree between the continuous intervals (one or more continuous intervals constituting the range) of the active power capacity of the wind power unit in the future time T1 obtained in S4430 and the upper limit of the possible fluctuation range of the active power of the wind power unit in the future time T1. Subtract the upper limit of each continuous interval of the active power capacity of the wind power unit in the future time T1 obtained in S4430 from the upper limit of the possible fluctuation range of the active power of the wind power unit in the future time T1 obtained in S3131, and judge the calculation results respectively. If it is greater than 0, the upper limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the upper limit mismatch degree is equal to 0.

[0214] S4520) Calculate the mismatch degree between the continuous intervals (one or more continuous intervals constituting the range) of the active power capacity of the wind power unit in the future time T1 obtained in S4430 and the lower limit of the possible fluctuation range of the active power of the wind power unit in the future time T1. Subtract the lower limit of the possible fluctuation range of the active power of the wind power unit in the future time T1 obtained in S3132 from the lower limit of the continuous intervals of the active power capacity of the wind power unit in the future time T1 obtained in S4430, and judge the calculation results respectively. If it is greater than 0, the lower limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the lower limit mismatch degree is equal to 0.

[0215] S4530) Based on the one-to-one correspondence between the continuous intervals included in the unit active power capacity range of the wind power unit within the future time T1 obtained from S4430, the upper limit mismatch degree of each continuous interval obtained from S4510 is subtracted from the lower limit mismatch degree of each continuous interval obtained from S4520. The absolute value of all results is taken, and then the smallest value is taken from all the absolute values ​​of the results to obtain the quantitative value of the mismatch between the current wind power unit's start-up and shutdown status and the total active power setting value of the complementary integrated power supply within the future time T1. For example, S4230 obtains the unit active power capacity range of the wind power unit within the future time T1 as (50, 100) ∪ (40 Assuming the active power of the wind power unit may fluctuate within the range of (200, 250) in the future time T1, the upper limit mismatch between the active power and the unit's active power capacity range is max[0, 250-100] = 150 and max[0, 250-500] = 0, respectively, and the lower limit mismatch is max[0, 50-200] = 0 and max[0, 400-200] = 200, respectively. Subtracting the lower limit mismatch from the upper limit mismatch of the two consecutive intervals and taking the absolute value, we get 150 and 200, respectively. Therefore, the quantified value of the mismatch is equal to the minimum of the two results, that is, the quantified value of the mismatch is 150.

[0216] S4600) provides operational recommendations for shutting down wind turbine generators that are generating electricity, specifically including:

[0217] S4610) Manually set the threshold parameter for recommending shutdown operations;

[0218] S4620) Set variable v3, and initialize v3 to 1;

[0219] S4630) If v3 is less than or equal to the wind turbine shutdown sequence length, then set the original mismatch metric variable, which is equal to the mismatch metric obtained in S4530; otherwise, proceed to step S4660.

[0220] S4640) Calculate the quantified value of the mismatch between the range of sorted v3 in the sequence of possible active power fluctuations corresponding to the wind turbine shutdown sequence and the setpoint of the total active power of the complementary integrated power supply within the future time T1, including:

[0221] S4641) Calculate the upper limit mismatch degree between the continuous intervals (one or more continuous intervals constituting the range) included in the active power capacity range of the wind power unit within the future time T1 obtained in S4430 and the range of sorted v3 in the active power possible fluctuation range sequence corresponding to the wind turbine shutdown sequence. Subtract the upper limit of each continuous interval included in the active power capacity range of the wind power unit within the future time T1 obtained in S4430 from the upper limit of the range of sorted v3 in the active power possible fluctuation range sequence corresponding to the wind turbine shutdown sequence, and judge the calculation results respectively. If it is greater than 0, the upper limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the upper limit mismatch degree is equal to 0.

[0222] S4642) Calculate the mismatch degree between the lower limit of the range of sorted v3 in the sequence of possible fluctuations of active power in the wind power supply unit within the future time T1 obtained in S4430 and the continuous intervals (referring to one or more continuous intervals that make up the range) of the unit active power supply unit within the future time T1. Subtract the lower limit of the range of sorted v3 in the sequence of possible fluctuations of active power in the wind turbine shutdown sequence from the lower limit of the continuous intervals of the unit active power supply unit within the future time T1 obtained in S4430. Judge the calculation results respectively. If it is greater than 0, the lower limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the lower limit mismatch degree is equal to 0.

[0223] S4643) According to the one-to-one correspondence between the continuous intervals included in the active power capacity range of the wind power unit within the future time T1 obtained from S4430, the upper limit mismatch degree of each continuous interval obtained from S4641 is subtracted from the lower limit mismatch degree of each continuous interval obtained from S4642. The absolute value of all results is taken, and then the smallest value is taken from the absolute values ​​of all results to obtain the quantified value of the mismatch between the range of v3 in the active power possible fluctuation range sequence corresponding to the wind turbine shutdown sequence and the set value of the total active power of the complementary integrated power supply within the future time T1.

[0224] S4650) Subtract the mismatched metric value obtained from S4643 from the original mismatched metric value variable, and perform the following operations based on the calculation result, including:

[0225] S4651) If the calculation result is greater than or equal to the judgment threshold parameter set in S4610, then v3 = v3 + 1. If v3 is greater than the wind turbine shutdown sequence length at this time, then jump to step S4660. Otherwise, update the original mismatch metric variable to the mismatch metric obtained in S4643, and jump to step S4640 to continue execution.

[0226] S4652) If the calculation result is less than the judgment threshold parameter set in S4610, then jump to step S4660 to continue execution.

[0227] S4660) Generates operation suggestions based on the value of variable v3, including:

[0228] S4661) If v3 = 1, no operation suggestions are generated;

[0229] S4662) If v3 > 1, then generate a shutdown operation suggestion, suggesting that the wind turbines corresponding to sequence 1 to v3-1 in the wind turbine shutdown sequence be shut down.

[0230] S4700) provides operational recommendations for starting up available but not generating wind turbines, including:

[0231] S4710) Manually set the threshold parameters for suggesting power-on operations;

[0232] S4720) Set variable v4, with an initial value of 1;

[0233] S4730) If v4 is less than or equal to the wind power start-up sequence length, then set the original mismatch metric variable, which is equal to the mismatch metric obtained in S4530; otherwise, proceed to step S4760.

[0234] S4740) Calculates the quantified value of the mismatch between the range of sorted v4 in the wind power start-up sequence and the setpoint of the total active power of the complementary integrated power supply within the future time T1, including:

[0235] S4741) Calculate the mismatch degree between the upper limit of the range of the unit active power capacity of the wind power source unit in the future time T1 obtained in S4430 and the range of sorted v4 in the active power possible fluctuation range sequence corresponding to the wind power start-up sequence. Subtract the upper limit of each continuous interval of the unit active power capacity of the wind power source unit in the future time T1 obtained in S4430 from the upper limit of the range of sorted v4 in the active power possible fluctuation range sequence corresponding to the wind power start-up sequence, and judge the calculation results respectively. If it is greater than 0, the upper limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the upper limit mismatch degree is equal to 0.

[0236] S4742) Calculate the mismatch degree between the lower limit of the range of sorted v4 in the sequence of possible fluctuations of active power in the wind power generation unit within the future time T1 obtained in S4430 and the continuous intervals (referring to one or more continuous intervals that make up the range) of the unit active power capacity of the wind power generation unit within the future time T1. Subtract the lower limit of the range of sorted v4 in the sequence of possible fluctuations of active power in the wind power generation unit within the sequence of possible fluctuations of active power in the wind power generation unit from the lower limit of the unit active power capacity of the wind power generation unit within the future time T1 obtained in S4430. Judge the calculation results respectively. If it is greater than 0, the lower limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the lower limit mismatch degree is equal to 0.

[0237] S4743) According to the one-to-one correspondence between the continuous intervals included in the active power capacity range of the wind power unit in the future time T1 obtained from S4430, the upper limit mismatch degree of each continuous interval obtained from S4741 is subtracted from the lower limit mismatch degree of each continuous interval obtained from S4742. The absolute value of all results is taken, and then the smallest value is taken from the absolute values ​​of all results to obtain the quantified value of the mismatch between the range of v4 in the active power possible fluctuation range sequence corresponding to the wind power start-up sequence and the set value of the total active power of the complementary integrated power supply in the future time T1.

[0238] S4750) Subtract the mismatched metric value obtained from S4743 from the original mismatched metric value variable, and perform the following operations based on the calculation result, including:

[0239] S4751) If the calculation result is greater than or equal to the judgment threshold parameter set in S4710, then v4 = v4 + 1. If v4 is greater than the wind power start-up sequence length at this time, then jump to step S4760. Otherwise, update the original mismatch quantification value variable to the mismatch quantification value obtained in S4743, and jump to step S4740 to continue execution.

[0240] S4752) If the calculation result is less than the judgment threshold parameter set in S4710, then proceed to step S4760 to continue execution.

[0241] S4760) Generates operation suggestions based on the value of variable v4, including:

[0242] S4761) If v4 = 1, no operation suggestions are generated;

[0243] S4762) If v4 > 1, then generate startup operation suggestions, suggesting that startup operations be performed on the wind turbine units corresponding to sequence 1 to v4-1 in the wind power startup sequence.

[0244] S4800 generates operational suggestions to assist operators in making decisions, including:

[0245] S4810) Classifies the operation suggestions generated by S4400 and displays them in order of priority (when there is more than one suggestion of a certain type);

[0246] S4820) displays the wind turbine shutdown operation suggestions generated by S4600 in an orderly manner;

[0247] S4830 displays the wind turbine startup operation suggestions generated by S4700 in an orderly manner.

[0248] Assuming the total active power setpoint of the complementary integrated power source changes from 300MW to 400MW in 70s, then Figure 1 The regulation effect of the complementary integrated power supply in the control model shown is as follows: Figure 4 As shown, conventional power supplies cannot significantly compensate for the random fluctuations in the output power of wind power sources over a short period of time, but they can effectively suppress large deviations in the actual active power output of wind power units.

[0249] The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions or substitutions made by those skilled in the art based on the technical features of the present invention are within the protection scope of the present invention.

Claims

1. A control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer, characterized in that, The complementary integrated power control center coordinates and controls conventional energy and wind power. The complementary integrated power supply control center is equipped with a complementary integrated unit, a conventional power supply unit, and a wind power supply unit. The complementary integrated unit transfers all the primary frequency regulation tasks of the wind power supply unit to the conventional power supply unit, and meets the total active power setpoint and primary frequency regulation requirements of the complementary integrated power supply. It issues instructions to the conventional power supply unit to allocate the unit active power target value and to set the primary frequency regulation adjustment coefficient of the conventional power supply unit. Meanwhile, it issues instructions to the wind power supply unit to suggest the start-up and shutdown operation of the wind power unit. The instruction for allocating the target value of the active power of the conventional power unit is derived from the total active power setting value of the complementary integrated power supply and the actual active power generated by the wind power unit. The instruction to set the primary frequency regulation coefficient of the conventional power unit is to intervene in the regulation amount of each generator set of the conventional power unit when performing primary frequency regulation based on the rated active power capacity of the wind power unit and the rated active power capacity of the conventional power unit, thereby transferring the primary frequency regulation task of the wind power unit to the conventional power unit. The instructions for starting and stopping the wind power units are derived from the total active power setpoint of the complementary integrated power source, the joint operation zone of the conventional power unit, the possible fluctuation range of the active power of the wind power unit, the start and stop sequence of the wind power unit, and the sequence of possible fluctuation ranges of active power corresponding to the start and stop sequence, and generate start and stop operation suggestions for wind turbine units for operators to refer to. The conventional power unit obtains the intermediate control parameters of the conventional power supply based on the basic parameters of conventional power supplies, including hydropower and thermal power, and sends them to the complementary integration unit. It also performs conventional power unit-level AGC allocation and unit active power closed-loop regulation based on the received active power target value and primary frequency regulation coefficient. The wind power unit sends intermediate control parameters of the wind power to the complementary integration unit and sends start-up and shutdown operation suggestions for the wind turbine generator set. 2.The control method of wind power and conventional energy networking based on frequency modulation task transfer according to claim 1, wherein, The allocation of the unit active power target value of the complementary integrated unit to the conventional power unit is as follows: the unit active power target value of the conventional power unit is equal to the total active power set value of the complementary integrated power unit minus the actual active power generated by the wind power unit in the calculation. The actual active power generated by the wind power unit is included in the calculation. It is based on the actual active power generated by the wind power unit and the output dead zone of the wind power unit is updated at a fixed period. The primary frequency regulation coefficient of the complementary integrated unit for the conventional power unit is set as follows: the primary frequency regulation coefficient of the conventional power unit issued by the grid multiplied by the primary frequency scaling coefficient; the primary frequency scaling coefficient is equal to (rated active power capacity of the wind power unit + rated active power capacity of the conventional power unit) ÷ rated active power capacity of the conventional power unit. The complementary integrated unit obtains the quantified value of the mismatch of the total active power setting of the complementary integrated power source based on the total active power setting value of the complementary integrated power source, the joint operation zone of the conventional power source unit, and the possible fluctuation range of the active power of the wind power source unit. The complementary integration unit then generates start-up and shutdown operation suggestions for the wind power generation unit based on the quantified value of the mismatch, combined with the current start-up and shutdown sequence of the wind power generation unit and the active power fluctuation range sequence corresponding to the start-up and shutdown sequence. 3.The control method of wind power and conventional energy networking based on frequency modulation task transfer according to claim 1, wherein, The parameters acquired by the complementary integration unit include: Parameters input to the complementary integrated unit (S1100): S1111) The total active power setting value of the complementary integrated power supply directly input; S1112) Rated active power capacity of a unit, wherein the rated active power capacity of a conventional power supply unit is equal to the sum of the rated active power capacity of a single unit of the generating unit of that type of power supply unit; the rated active power capacity of a wind power supply unit is equal to the sum of the rated active power capacity of a single unit of the generating wind turbine. The actual active power generated by unit S1113 is equal to the sum of the actual active power generated by each unit of the conventional power supply unit and the wind power supply unit, respectively. Input parameters sent by the S1120 conventional power supply unit: S1121) The unit primary frequency regulation target adjustment of a conventional power supply unit is equal to the sum of the unit primary frequency regulation target adjustments of the generating units currently generating electricity; S1122) Unit joint operation area of ​​conventional power supply unit; S1123) Actual frequency regulation of the primary frequency modulation of a conventional power supply unit; S1124) The unit primary frequency regulation correction amount of the conventional power supply unit is equal to the unit primary frequency regulation actual adjustment amount of the conventional power supply unit when the actual adjustment amount of the primary frequency regulation of each unit of the conventional power supply unit can be measured; otherwise, it is equal to the unit primary frequency regulation target adjustment amount of the conventional power supply unit as described in S1121. S1125) The active power regulation dead zone of a conventional power supply unit is equal to the sum of the active power regulation dead zones of the single units of the conventional power supply unit in operation. Input parameters sent by the S1130 wind power unit: S1131) The actual active power generated by the unit of the wind power supply unit is included in the calculation. It is calculated by the wind power supply unit based on the actual active power generated by the unit and the dead zone of each wind turbine. S1132) The actual active power generated by the wind power unit is used as a filter value in the calculation. It is calculated by the wind power unit based on the actual active power generated by the unit and the dead zone of each wind turbine. S1133) The possible fluctuation range of active power of wind power unit is a prediction result of the fluctuation range of active power of wind power unit within a certain period of time in the future. S1134) Start-up and shutdown sequences of wind power units, and their corresponding active power fluctuation range sequences; S1135) Target adjustment amount for primary frequency regulation of wind power unit: Based on the comparison with the primary frequency regulation threshold, its value is either 0, or the actual active power generated by the wind power unit multiplied by the grid frequency deviation and then multiplied by the given wind power primary frequency regulation coefficient. 4.The control method of wind power and conventional energy networking based on frequency modulation task transfer according to claim 1, wherein, The operation of the conventional power supply unit includes: S2100) Determines the unit type for conventional power supply units: (S2110) Hydropower units and thermal power units are classified according to their power source and regulation mechanism; S2120) According to the different active power regulation control states of generator sets, they are divided into single-unit open-loop units, single-unit closed-loop units, units with AGC engaged, and units without AGC engaged. S2200) Establish a combined output model for each unit with AGC, and calculate the joint operation zone, joint recommended operation zone, and joint restricted operation zone to determine the current single-unit AGC active power allocation value for each unit; S2300 compares the target active power value of the conventional power supply unit with the unit joint operation area. When the target active power value of the unit is included in the unit joint operation area, the target active power value of the unit is feasible; when the target active power value of the unit is not included in the unit joint operation area, the target active power value of the unit is not feasible. Then, it seeks an operation suggestion to make the target active power value of the unit feasible. The generated operation suggestions are classified and displayed in an orderly manner according to the obtained priority. S2400) Calculate the active power allocation value of a single AGC unit in the AGC unit: Calculate the active power allocation value of the unit AGC of the conventional power supply, and start the unit-level AGC allocation process of the conventional power supply when the conditions are met; then determine the target distribution combination mode and the target output combination mode of the AGC unit; according to the target output combination mode of the AGC unit, allocate the active power of each AGC unit in the AGC unit. S2500) Conventional power unit active power regulation of each individual closed-loop unit: S2510) Determine the active power setting value of each individual closed-loop unit; S2520) The active power set value of each unit in the conventional power supply unit is superimposed with the primary frequency regulation correction to obtain the active power execution value of each unit. The active power control system of each closed-loop unit in the S2530 conventional power unit takes the active power execution value of the unit as the target, calculates the deviation between the actual active power generated by the unit and the active power execution value of the unit, and outputs a continuous signal to adjust the actual active power generated by the unit to make the actual active power generated by the unit tend to the active power execution value of the unit, and finally stabilize within the adjustment dead zone range of the active power execution value of the unit.

5. The control method for wind power and conventional energy networking based on frequency modulation task transfer according to claim 4, characterized in that, The determination of the setpoint value, executed value, AGC active power allocation value, and corrected allocation value of each unit's active power in the conventional power supply unit includes the following operations: The steps outlined in S2200 for establishing a combined output model for each unit involved in AGC and calculating the joint operation zone, recommended joint operation zone, and restricted joint operation zone include the following operations: S2210) Determine the recommended operating area, restricted operating area, prohibited operating area, and operating area for each AGC unit: S2211) Single unit prohibited operation zone refers to the load area in which the set value of the single unit active power of the unit is prohibited from being set; the actual value of the single unit active power is allowed to pass through the single unit prohibited operation zone, but it is not allowed to stay or stay in the single unit prohibited operation zone for a long time. S2212) Recommended operating zone for a single unit refers to the load area where the unit operates with high efficiency and stable operation when the actual active power of the unit is within the range; where conditions permit, the setpoint of the active power of the unit should be set within the recommended operating zone for the single unit. S2213) Single unit restricted operating area: When the total active power setting value of all units cannot be allocated in any way to ensure that the single unit active power setting value of all units is within the single unit recommended operating area, the single unit active power setting value of the unit is also allowed to be set within the single unit restricted operating area. S2214) Single-machine operation area, the single-machine recommended operation area described in S2212 and the single-machine restricted operation area described in S2213 are collectively referred to as the single-machine operation area; S2215) The low-load area of ​​conventional thermal power units is the single-unit prohibited operation zone. The single-unit prohibited operation zone of thermal power units is 0~50% of the rated capacity. The remaining part of the rated capacity after deducting the single-unit prohibited operation zone is the single-unit recommended operation zone. S2216) The range of the single-unit restricted operating area, single-unit prohibited operating area, and single-unit recommended operating area of ​​conventional hydropower units shall be based on the conventional operating parameters of the units; S2217) The rated capacity of a conventional power unit after deducting the prohibited and restricted operating areas of a single unit is the recommended operating area of ​​a single unit. The rated capacity of a hydropower unit varies with the real-time head changes of the hydropower station. S2220) Establish a recommended combined output model for units with AGC (Automatic Generation Control) and calculate the joint recommended operating area for units with AGC, including: S2221) Based on the rated capacity of each unit, the prohibited operating area of ​​a unit, the restricted operating area of ​​a unit, and the recommended operating area of ​​a unit, the units that have put into AGC are grouped together. Units with the same parameters are grouped together. S2222) Group recommended operating areas for each group of units under various recommended distribution modes: Based on the number of recommended operating areas per unit and the number of units in each group, determine the recommended distribution mode, and then calculate the group recommended operating area for each group of units under each recommended distribution mode; S2223) For all units that have been put into AGC, based on the different distribution patterns of each group of units in the single recommended operating area and the corresponding group recommended operating areas of each group of units, calculate the combined recommended operating areas of the units put into AGC under various recommended distribution patterns and when different combinations of patterns are made. S2224) Take the union of the combined recommended operating areas of the AGC units under all recommended distribution combinations obtained in S2223 to obtain the joint recommended operating area of ​​the AGC units. S2225) Based on the combined recommended operating area of ​​the AGC unit under various recommended distribution combinations obtained in S2223, determine the available recommended distribution combination methods of the AGC unit under each output range in the combined recommended operating area. (S2230) Establish a limited combined output model for the AGC units and calculate the combined operating range and combined limited operating range of the AGC units, including: S2231) Group the units that have been put into AGC; S2232) For each group of units, calculate the group operation area of ​​each group of units under various distribution modes based on the distribution of the output of each unit in each single unit operation area; S2233) For all units that have been put into AGC, based on the different distribution patterns of each group of units in the single-machine operation area and the corresponding group operation areas of each group of units, calculate the combined operation area of ​​the units put into AGC under various distribution patterns and when different combinations of patterns are made. S2234) Calculate the joint operation area and joint restricted operation area of ​​the AGC unit: Find the union of the combined operation areas of the AGC unit under all distribution combination modes obtained in S2233 to obtain the joint operation area of ​​the AGC unit. Then, subtract the joint suggested operation area obtained in S2224 from the joint operation area of ​​the AGC unit to obtain the joint restricted operation area of ​​the AGC unit. S2235) Based on the combined operating areas of the AGC units under various distribution combinations obtained in S2233, determine the available restricted distribution combination methods for each output interval within the joint restricted operating area: sort the upper and lower limits of the combined operating area corresponding to each distribution combination method obtained in S2233, and then divide the joint restricted operating area of ​​the AGC units obtained in S2234 according to the sorted upper and lower limits to obtain multiple output intervals. Then compare each output interval with the combined operating area corresponding to various distribution combinations of the AGC units to obtain the available restricted distribution combination methods under each output interval. S2240) determines the current single-unit AGC active power allocation value for each unit, including: (S2241) For units with AGC in operation, the active power allocation value of a single unit AGC is allocated by the unit-level AGC. (S2242) For single-unit closed-loop units without AGC, the active power allocation value of single-unit AGC tracks the active power set value of single-unit. (S2243) For single-unit open-loop generator sets that have not been put into AGC, the single-unit AGC active power allocation value tracks the single-unit active power set value, while the single-unit active power set value is assigned by the single-unit active power actual value. That is, when the single-unit active power set value is not equal to the single-unit active power actual value, and the absolute value of the difference between the two is greater than the single-unit active power adjustment dead zone, the single-unit active power actual value is written into the single-unit active power set value. S2250) The joint recommended operating area of ​​the AGC units obtained in S2224 is added to the active power allocation value of the individual AGC units that are not in AGC units to obtain the joint recommended operating area of ​​the conventional power supply units, which provides a reference for the automatic control of active power of conventional power supply units. S2260) The combined operation zone of the AGC units obtained in S2234 is added to the active power allocation values ​​of the individual AGC units that are not in operation to obtain the combined operation zone of the conventional power supply units, which provides a reference for the automatic control of active power of conventional power supply units and the comprehensive control of complementary integrated power supplies. S2270) The combined restricted operating area of ​​the AGC units obtained in S2234 is added to the active power allocation value of the individual AGC units that are not in AGC units to obtain the unit combined restricted operating area of ​​the conventional power supply. (S2300) The target active power value of the conventional power supply unit is compared with the unit joint operation zone described in S2260. If the target active power value is included in the unit joint operation zone, the target active power value is feasible, and the remaining steps of S2300 are skipped; if the target active power value is not included in the unit joint operation zone, the target active power value is not feasible, and an operational suggestion is sought to make the target active power value feasible. S2320) Seeking operational recommendations to make the unit active power target value of conventional power sources feasible by putting units that are not currently under AGC control into AGC control, including: S2321) Set loop variable i 1, i 1 is set to 1; S2322) i 1. Make a judgment if i If the number of units is greater than the number of units not using AGC, then S2320 terminates; otherwise, continue with the following steps to find the unit that will... i Operational recommendations for enabling AGC control on a unit that is not currently in use to make the target active power value of a conventional power source feasible; S2323) enumerating all combinations of 1 unit from all units not put into AGC i 1 unit, a total of C ( j 1, i 1) wherein C () is a combination number function, j 1 is the number of units not put into AGC; S2324) respectively according to the list in S2323 C ( j 1, i 1) In the combination of various methods, the units that have not been put into AGC are assumed to be put into AGC, and the unit joint operation area and the unit joint recommended operation area are recalculated using the S2200 method. Then, based on the newly calculated unit joint operation area, the feasibility of the unit active power target value is reassessed using the S2300 method. (S2325) Based on the calculation results of S2324, if there is one and only one way to regenerate the unit joint operation area that makes the unit active power target value feasible, then generate operation suggestions; if there are multiple ways to regenerate the unit joint operation area that make the unit active power target value feasible, then generate operation suggestions according to these methods respectively, and jump to step S2326 to continue execution; if there is no way to regenerate the unit joint operation area that makes the unit active power target value feasible, then... i 1= i 1+1, then jump to step S2322. i 1. Determine whether the number of units is greater than the number of units without AGC, and decide whether to proceed with subsequent steps based on the determination result; S2326) Prioritizes the multiple operation suggestions generated in S2325, based on the selection of each operation suggestion from units that have never been put into AGC. i The combination method of a unit, and the range of the changed unit joint operation area and unit joint recommended operation area corresponding to each operation suggestion obtained from S2324, are sorted according to their importance from high to low as follows: whether the unit active power target value belongs to the unit joint recommended operation area, the number of hydropower units and thermal power units in the selected units, and the absolute value of the difference between the unit active power target value and the boundary or segment boundary of the unit joint operation area. S2330) Seeking operational recommendations to make the unit active power target value of conventional power sources feasible by converting non-generating units to generating mode and engaging AGC, including: S2331) Set the loop variable i 2, i The initial value of 2 is set to 1; S2332) i 2. Make a judgment if i If 2 is greater than the number of available but not generating units, then S2330 terminates; otherwise, continue with the following steps to find the unit that will generate electricity. i Operational recommendations for converting two available but non-generating units into generating mode and engaging AGC to make the unit active power target value of the conventional power source feasible; S2333) Enumerate all combinations of 2 units from all available and not generating units i 2 units, for a total of C ( j 2, i 2) kinds, wherein j 2 is the number of available and not generating units; S2334) respectively according to the list in S2333 C ( j 2, i 2) In the combination of various methods, the available but non-generating units selected by each method are assumed to be generating units and put into AGC. The S2200 method is used again to calculate the joint operation area and the joint recommended operation area of ​​the unit. Then, based on the newly calculated joint operation area of ​​the unit, the S2300 method is used to re-evaluate the feasibility of the unit's active power target value. (S2335) Based on the calculation results of S2334, if there is one and only one way to regenerate the unit joint operation area that makes the unit active power target value feasible, then an operation suggestion is generated; if there are multiple ways to regenerate the unit joint operation area that make the unit active power target value feasible, then operation suggestions are generated according to these methods respectively: "Convert the available but non-generating units selected by the corresponding method to generating state and put them into AGC", and the process jumps to step S2336 to continue execution; if no method of regenerating the unit joint operation area makes the unit active power target value feasible, then... i 2= i 2+1, then jump to step S2332. i 2. Determine whether the number of available but not generating units is greater than the number of generating units, and decide whether to proceed with subsequent steps based on the determination result; S2336) Prioritizes the multiple operational suggestions generated in S2335, based on the selection of these operational suggestions from available but not yet generating units. i The combination of the two units, and the range of the changed unit joint operation area and unit joint recommended operation area corresponding to each operation suggestion obtained from S2334, are ranked according to their importance from high to low as follows: the number of hydropower units and thermal power units in the selected units, whether the unit active power target value belongs to the unit joint recommended operation area, and the absolute value of the difference between the unit active power target value and the boundary or segment boundary of the unit joint operation area. S2340) Seeking operational recommendations to make the target active power per unit of conventional power source feasible by switching generating units to a non-generating state, including: S2341) Set loop variable i 3, i The initial value of 3 is set to 1. S2342) i 3. Make a judgment if i If the number of generating units is greater than 3, then S2340 terminates; otherwise, continue with the following steps to find the unit that will generate more power. i Operational recommendations for making the target active power of the conventional power source feasible by switching 3 generating units to non-generating mode; S2343) enumerating all combinations of 3 units out of i 3 units, for a total of C ( j 3, i 3) kinds, wherein j 3 is the number of units generating power; S2344) according to the enumeration of S2343 C j 3, i 3) a combination mode, assuming the generating units selected by various modes as non-generating state, and re-computing the unit joint operation area and the unit joint recommended operation area by the method of S2200, and then re-judging the feasibility of the unit active power target value according to the newly computed unit joint operation area by the method of S2300.​ (S2345) Based on the calculation results of S2344, if there is one and only one way to regenerate the unit joint operation area that makes the unit active power target value feasible, then an operation suggestion is generated; if there are multiple ways to regenerate the unit joint operation area that make the unit active power target value feasible, then operation suggestions are generated according to these methods respectively: "switch the generating units selected by the corresponding methods to non-generating state", and the process jumps to step S2346 to continue execution; if no method to regenerate the unit joint operation area makes the unit active power target value feasible, then... i 3= i 3+1, then jump to step S2342. i 3. Determine whether the number of generating units exceeds the number of generating units, and decide whether to proceed with subsequent steps based on the determination result; S2346) Prioritizes the multiple operation suggestions generated in S2345, based on the selection of the corresponding generating units from which these operation suggestions are made. i The combination of the three units, and the range of the changed unit joint operation area and unit joint recommended operation area corresponding to each operation suggestion obtained from S2344, are ranked according to their importance from high to low as follows: the number of units that have not put AGC into operation and the number of units that have put AGC into operation, whether the unit active power target value belongs to the unit joint recommended operation area, and the absolute value of the difference between the unit active power target value and the boundary or segment boundary of the unit joint operation area; S2350) Classifies the operation suggestions generated by S2320, S2330, and S2340, and displays them in order according to the priority obtained by S2326, S2336, and S2346; S2400) Calculate the active power allocation value of a single AGC unit in the AGC unit: S2410) Calculates the active power allocation value of the unit AGC for conventional power sources, including: S2411) Calculate the active power allocation value of each AGC unit that is not in use; S2412) Subtract the individual AGC active power allocation values ​​of all AGC units that have not been put into operation from the unit active power target value to obtain the unit AGC active power allocation value; S2420) Initiates the unit-level AGC allocation process for conventional power supply when certain conditions are met. The triggering conditions include: S2421) The sum of the active power allocation values ​​of the individual AGC units of all AGC units is greater than or less than the active power allocation value of the unit AGC obtained in S2410. S2422) The combined output model or joint operation zone, joint recommended operation zone, and joint restricted operation zone of the AGC unit have changed; S2423) Units that have implemented AGC are deactivated at the unit level, or units that have not implemented AGC are implemented at the unit level. S2424) Hydropower units with AGC have their rated active power capacity, prohibited operating zone, restricted operating zone, and recommended operating zone ranges changed due to changes in the hydropower station's head. S2430) Determine the target distribution combination of the AGC units to be put into operation, including: (S2431) If the active power allocation value of the unit AGC obtained in S2410 is within the joint recommended operating area of ​​the AGC unit, then based on the available recommended distribution combination methods of the AGC unit under each output range in the joint recommended operating area obtained in S2225, determine all the recommended distribution combination methods of the AGC unit that can satisfy the active power allocation value of the unit AGC and use them as available distribution combination methods. Otherwise, based on the available restricted distribution combination methods of the AGC unit under each output range in the joint restricted operating area obtained in S2235, determine all the restricted distribution combination methods of the AGC unit that can satisfy the active power allocation value of the unit AGC and use them as available distribution combination methods. S2432) Select the combination with the fewest units in the single-unit restricted operation zone from all available distribution combinations obtained in S2431, and use it as the available distribution combination. S2433) If there are more than one available distribution combination method obtained from S2432, then it is further compared with the current distribution combination method, and the distribution combination method with the fewest number of units crossing the single unit prohibited operation zone is selected as the target distribution combination method. If there are multiple distribution combination methods with the same number of units crossing the single unit prohibited operation zone, then all of them are selected as the target distribution combination methods. S2440) Determines the target output combination of the AGC units, including: S2441) List all output combinations that can satisfy the target distribution combination obtained in S2430 when the AGC unit is put into operation; S2442) Compare all the output combinations listed in S2441 with the current operating area of ​​each unit in AGC, and select the output combination with the fewest number of times the unit crosses the single unit prohibited operating area as the target output combination. (S2443) If there are more than one target output combination method obtained from S2442, the target output combination methods obtained from S2442 are weighted and applied to the adverse operating condition priority of the AGC unit. The weighting method is to sum the priorities of each unit in the restricted operating area and select the output combination method with the fewest weighted units in the single-unit restricted operating area as the target output combination method. The adverse operating condition priority of the unit can be set manually or automatically. When the manual setting method is used, the adverse operating condition priority is set manually by the operator. When the automatic setting method is used, the system automatically performs weighted statistics on the operating time of each unit in the restricted operating area and the prohibited operating area since the last maintenance period, sorts the weighted statistics time of each unit, and then sets the automatic priority in order of weighted time from shortest to longest and from highest to lowest. S2444) If there are more than one target output combination method obtained from S2443, after weighting the adverse operating conditions of the AGC units, select the output combination method with the fewest weighted units crossing the single unit prohibited operation zone from the target output combination method obtained from S2443 as the target output combination method. S2450) Based on the target output combination method of the AGC units, the active power allocation for each AGC unit is performed, including: S2451) Compare the target operating area of ​​each unit with the current operating area under the target output combination mode. For units whose single unit operating area has changed, correct the original single unit AGC active power allocation value to the limit value of the upper and lower limits of the target operating area that is closest to the current single unit operating area. Thereafter, the original single unit AGC active power allocation value used in S2452, S2453 and S2454 are all the corrected values. S2452) The result of subtracting the sum of the original single-unit AGC active power allocation values ​​of all AGC units put into operation from the AGC active power allocation value of the calculation unit is used as the value to be allocated; (S2453) If the value to be allocated obtained from S2452 is greater than 0, then calculate the absolute value of the difference between the original single-unit AGC active power allocation value of each AGC unit and the upper limit of the target operating area, and use it as the single-unit allocable value; if the value to be allocated obtained from S2452 is less than 0, then calculate the absolute value of the difference between the single-unit AGC active power allocation value of each AGC unit and the lower limit of the target operating area, and use it as the single-unit allocable value. S2454) The value to be allocated obtained in S2452 is allocated to each AGC unit in a manner that is proportional to the single-unit allocable value of each AGC unit obtained in S2453. The allocation result is then superimposed on the original single-unit AGC active power allocation value of each unit to obtain the single-unit AGC active power allocation value of each AGC unit. S2510) Determine the active power setting value for each individual closed-loop generator unit: (S2511) For single-unit closed-loop generator units that have not been put into AGC, the active power setting value of a single unit shall be manually set by the operator. (S2512) For thermal and hydropower units with AGC in operation, the active power setting value of a single unit is equal to the active power allocation value of the single unit AGC. S2520) The active power setpoint of each unit in the conventional power supply unit is superimposed with the primary frequency regulation correction to obtain the active power execution value of each unit.

6. The control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer as described in claim 1, characterized in that, The operation of the wind power unit includes: S3100 generates the future for each wind turbine. T The possible fluctuation range of active power within a time period is calculated, and the possible fluctuation range of active power per unit of wind power source is also calculated. T 1 is a parameter set to allow sufficient time for possible start-up and shutdown operations of the wind turbine: S3200 generates start-up and shutdown sequences for wind turbine units respectively: S3210) Generates a shutdown sequence for wind turbine generators, with priority calculated based on the duration the generator is in power generation mode. The longer the generator is in power generation mode, the higher the priority. S3220) Generates a startup sequence of available but non-generating wind turbine units. The priority is calculated based on the duration of the unit's non-generating state. The longer the non-generating state lasts, the higher the priority. S3300) Generate a sequence of possible active power fluctuation ranges corresponding to the start-up and shutdown sequences of wind turbine generators; S3310) Generate a sequence of possible active power fluctuation ranges corresponding to the start-up sequences of wind turbine generators; S3320) Generate a sequence of possible active power fluctuation ranges corresponding to the shutdown sequences of wind turbine generators. S3400) The actual active power generated by the unit of the wind power source is included in the calculation. S3500) Calculates the actual active power generated by the wind power unit and includes the filtered values ​​in the calculation: S3510) The filter value for the calculation of the actual active power generated by the wind power unit is initially set to be equal to the actual active power generated by the unit. S3520) Calculates the filtering threshold for the actual active power generated by the wind power unit; S3530) The active power of the wind power unit is compared with the filtered value of the actual active power generated by the wind power unit and the current active power generated by the wind power unit at a fixed period and then updated.

7. The control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer as described in claim 6, characterized in that, The operation of the wind power unit is as follows: If a power prediction system is deployed in the wind power unit (S3100), then the future power prediction of each wind turbine will be calculated using the power prediction function. T The possible fluctuation range of active power within a time period; If a power prediction system is not deployed, the following method is used: (S3121) For wind turbine generators, the current power multiplied by the upper limit prediction parameter is used as the future power. T The upper limit of the possible fluctuation range of active power within 1 time period is obtained by multiplying the current power by the lower limit prediction parameter as the lower limit of the possible fluctuation range of active power, where the upper limit prediction parameter > 1 > the lower limit prediction parameter > 0; the upper limit prediction parameter and the lower limit prediction parameter are fixed values ​​or set as dynamic parameters based on prior experience. (S3122) For wind turbines that are not generating electricity, a future generator set with the same or similar performance shall be used. T The potential fluctuation range of active power within a given time period will be used as a basis for assessing the future performance of the unit. T The possible fluctuation range of active power within 1 time period; S3130) Calculating the Future T The potential fluctuation range of the active power of a wind power unit within one time period: [This likely refers to the future...] T The upper limit of the possible fluctuation range of active power of all generator units in the wind power unit within one time period is summed to obtain the upper limit of the possible fluctuation range; the future... T The lower limit of the possible fluctuation range of active power of all generator sets in the wind power unit within 1 time period is summed and used as the lower limit of the possible fluctuation range. S3200 generates start-up and shutdown sequences for wind turbine units, including: S3210) Generates a shutdown sequence for wind turbine generators, with priority calculated based on the duration the generator is in power generation mode. The longer the generator is in power generation mode, the higher the priority. S3220) Generates a startup sequence of available but non-generating wind turbine units. The priority is calculated based on the duration of the unit's non-generating state. The longer the non-generating state lasts, the higher the priority. S3300 generates sequences of possible active power fluctuation ranges corresponding to start-up and shutdown sequences for wind turbine generators, including: S3310) Generates a sequence of possible active power fluctuations corresponding to the start-up sequence of wind turbine generators: S3311) Setting variables u 1, u The initial value of 1 is 1; S3312) The possible fluctuation range of active power of wind power units, plus the order in the wind power start-up sequence. u The possible fluctuation range of active power of unit 1 is obtained by sorting the possible fluctuation range of active power in the sequence corresponding to the wind power start-up sequence. u The range of 1, where sorting u The upper limit of the range of 1 is equal to the upper limit of the possible fluctuation range of the active power of the wind power unit plus the order in the wind power start-up sequence. u The active power of unit 1 may fluctuate within the upper limit of the range, sorted by [reason]. u The lower limit of the range of 1 is equal to the lower limit of the possible fluctuation range of the active power of the wind power unit plus the order in the wind power start-up sequence. u The active power of unit 1 may fluctuate within the lower limit of the range; S3313) Judgment u Is 1 equal to the length of the wind turbine start-up sequence? u If 1 equals the wind turbine start-up sequence length, then terminate step S3310; otherwise, proceed. u 1= u 1+1, then continue with the subsequent steps; S3314) Sort the active power fluctuation range sequence corresponding to the wind power start-up sequence. u The range of 1-1, plus the order in the wind power start-up sequence. u The possible fluctuation range of active power of wind turbine generator set 1 is obtained by sorting the possible fluctuation range of active power in the sequence corresponding to the wind turbine start-up sequence. u The range of 1, where sorting u The upper limit of the range of 1 is equal to the sorting. u The upper limit of the range of 1-1 plus the sorting in the wind power start-up sequence. u The active power of unit 1 may fluctuate within the upper limit of the range, sorted by [reason]. u The lower bound of the range of 1 is equal to the sorting. u The lower limit of the range of 1-1 plus the sorting in the wind power start-up sequence u The active power of unit 1 may fluctuate within the lower limit of the range; (S3315) Jump to step S3313 until... u The sequence ends when 1 equals the length of the wind turbine start-up sequence. S3320) Generates a sequence of possible active power fluctuations corresponding to the shutdown sequence for each wind turbine, including: S3321) Setting variables u 2, u The initial value of 2 is 1; S3322) Subtract the order of wind power outages in the sequence from the possible fluctuation range of active power of the wind power unit. u The possible fluctuation range of active power of the wind turbine generators is obtained by sorting the possible fluctuation range of active power in the sequence corresponding to the wind turbine shutdown sequence. u The range of 2, where sorting u The upper limit of the range of 2 is equal to the upper limit of the possible fluctuation range of the active power of the wind power unit minus the order in the wind power shutdown sequence. u The active power of unit 2 may fluctuate within the upper limit of the range, sorted. u The lower limit of the range of 2 is equal to the lower limit of the possible fluctuation range of the active power of the wind power unit minus the number of wind power outages in the sequence. u The active power of unit 2 may fluctuate within the lower limit of the range; S3323) Judgment u Is 2 equal to the length of the wind power outage sequence? u If 2 equals the length of the wind turbine shutdown sequence, then terminate step S3320; otherwise, proceed. u 2= u 2+1, then continue with the subsequent steps; S3324) Sort the active power fluctuation range sequence corresponding to the wind power shutdown sequence. u The range of 2-1, minus the order in the wind power outage sequence. u The possible fluctuation range of active power of unit 2 is obtained by sorting the possible fluctuation range of active power in the sequence corresponding to the wind power shutdown sequence. u The range of 2, where sorting u The upper limit of the range of 2 is equal to the sorting. u The upper limit of the range of 2-1 minus the sorted value in the wind power shutdown sequence. u The active power of unit 2 may fluctuate within the upper limit of the range, sorted. u The lower bound of the range of 2 is equal to the sorting. u The lower limit of the range of 2-1 minus the sorted sequence of wind power outages. u The active power of unit 2 may fluctuate within the lower limit of the range; (S3325) Jump to step S3323, until... u The sequence ends when 2 equals the length of the wind turbine shutdown sequence. (S3400) The actual active power generated by the wind power unit is included in the calculation of the following quantities: S3410) The calculation quantity of the actual active power generated by the wind power unit is initially set to be equal to the actual active power generated by the unit; S3420) Set the output dead zone of each unit of the wind power unit and accumulate them to obtain the unit output dead zone of the wind power unit; S3430) Compare the actual active power generated by wind power units in the calculation with the actual active power generated by wind power units in the current period according to a fixed period: S3431) If the absolute value of the difference between the two is less than or equal to the dead zone of the wind power unit, the actual value of the active power generated by the wind power unit remains unchanged in the calculation. S3432) If the absolute value of the difference between the two is greater than the dead zone of the wind power unit, then the amount of active power generated by the wind power unit included in the calculation is equal to the actual active power generated by the wind power unit in the current period. The filter value for calculating the actual active power generated by the wind power unit (S3500) is as follows: S3510) The filter value for the calculation of the actual active power generated by the wind power unit is initially set to be equal to the actual active power generated by the unit. S3520) Calculates the filtering threshold for the actual active power generated by a wind power unit, including: S3521) Set scaling factor λ , λ >1; (S3522) The filtering threshold for the actual active power output of a wind power unit is equal to the unit's output dead zone multiplied by... λ ; S3530) Compares the filtered value of the actual active power generated by the wind power unit with the actual active power generated by the wind power unit in the current period according to a fixed period: S3531) If the absolute value of the difference between the two is less than or equal to the filtering threshold obtained in S3522, the actual active power generated by the wind power unit will remain unchanged in the filtered value of the calculation. (S3532) If the absolute value of the difference between the two is greater than the filtering threshold obtained in S3522, then the filtered value of the active power generated by the wind power unit is equal to the active power generated by the wind power unit in the current period.

8. The control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer as described in claim 1, characterized in that, The adjustment of the conventional power supply unit by the complementary integrated unit includes: S4100) calculates the target value of the active power of a conventional power unit, which is equal to the total active power set value of the complementary integrated power supply minus the actual active power generated by the wind power unit. S4200 compares the unit active power target value of conventional power supply with the unit joint operation area: S4210) When the target value of the unit active power is included in the unit joint operation area, the target value of the unit active power is feasible, and the unit active power target value is allocated by unit-level AGC. (S4220) When the target value of active power of a unit is not included in the joint operation area of ​​the unit, and the target value of active power of the unit is not feasible, then find an operation suggestion that makes the target value of active power of the unit feasible; Find operational recommendations that would make the target active power of conventional power units feasible by putting non-AGC units into AGC control, and prioritize the operational recommendations. Find operational recommendations that would make the target active power of conventional power units feasible by converting non-generating units to generating state and engaging AGC, and prioritize the operational recommendations. Find operational recommendations that would make the target active power of conventional power units feasible by switching generating units to non-generating states, and prioritize these operational recommendations. S4300) performs active power regulation on each closed-loop unit of the conventional power supply unit: The S4310 complementary integrated unit calculates the primary frequency regulation coefficient of the conventional power supply unit, including: S4311) The primary frequency scaling factor of the complementary integrated unit for calculating the conventional power unit is equal to (rated active power capacity of the wind power unit + rated active power capacity of the conventional power unit) ÷ rated active power capacity of the conventional power unit. When performing primary frequency regulation and active power regulation, each unit of the conventional power supply unit adjusts according to the scaled primary frequency regulation coefficient.

9. The control method for wind power and conventional energy grid interconnection based on frequency regulation task transfer as described in claim 1 or 8, characterized in that, The regulation of the wind power unit by the complementary integrated unit includes: S4400) Calculate the future T The active power capacity of a wind power unit within a given time period: S4410) Calculating the Future T The lower limit of the active power capacity of a wind power unit at each time point within a time period, or the lower limit of each continuous interval of the capacity, including: (S4411) If the dispatcher issues the active power plan curve for the complementary integrated power source in advance, then the future... T Subtracting the upper limit of the joint operation zone of the conventional power unit or the upper limit of each continuous interval of the joint operation zone from the total active power setpoint of the complementary integrated power supply at each time point within a time period yields the future... T The lower limit of the active power capacity of the wind power unit at each time point within a time period, or the lower limit of each continuous interval of the capacity. (S4412) If the dispatcher has not issued the active power plan curve for the complementary integrated power source in advance, then the current total active power setpoint of the complementary integrated power source is subtracted from the upper limit of the joint operation area of ​​the conventional power unit or the upper limit of each continuous interval of the joint operation area to obtain the future active power. T The lower limit of the active power capacity of the wind power unit at each time point within a time period, or the lower limit of each continuous interval of the capacity. S4420) Calculating the Future T The upper limit of the active power capacity of a wind power unit at each point in time within a given period, or the upper limit of each consecutive interval of the capacity: (S4421) If the dispatcher issues the active power plan curve for the complementary integrated power source in advance, then the future... T Subtracting the lower limit of the joint operation zone of the conventional power unit or the lower limit of each continuous interval of the joint operation zone from the total active power setpoint of the complementary integrated power supply at each time point within a time period yields the future... T The upper limit of the active power capacity of the wind power unit at each time point within a time period, or the upper limit of each continuous interval of the capacity. (S4422) If the dispatcher has not issued the active power plan curve for the complementary integrated power source in advance, then the total active power setpoint of the current complementary integrated power source is subtracted from the lower limit of the joint operation area of ​​the conventional power unit or the lower limit of each continuous interval of the joint operation area to obtain the future active power. T The upper limit of the active power capacity of the wind power unit at each time point within a time period, or the upper limit of each continuous interval of the capacity. S4430) Future T The active power capacity of a wind power unit within a given time period is for the future. T The active power capacity of each wind power unit at each time point within a time period is taken as the intersection. S4500 calculates the current start-up and shutdown status of wind power unit and future... T The quantified value of the mismatch in the total active power setpoint of the complementary integrated power supply within one time period includes: S4510) Calculating the Future T The active power capacity range of a wind power unit within a given time period includes various consecutive intervals and future... T The upper limit mismatch of the possible fluctuation range of active power of wind power units within 1 time period: the obtained future T The upper limit of the possible fluctuation range of the active power of the wind power unit within 1 time period, minus the future T The upper limit of each continuous interval included in the active power capacity range of the wind power unit within 1 time period is determined, and the calculation results are judged respectively. If it is greater than 0, the upper limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the upper limit mismatch degree is equal to 0. S4520) Calculating the Future T The active power capacity range of a wind power unit within a given time period includes various consecutive intervals and future... T The lower limit mismatch of the possible fluctuation range of active power of wind power units within 1 time period: [This refers to the future...] T The lower limit of each continuous interval included in the active power capacity range of a wind power unit within one time period is subtracted from the future value. T The lower limit of the possible fluctuation range of the active power of the wind power unit within 1 time period is determined, and the calculation results are judged. If it is greater than 0, the lower limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the lower limit mismatch degree is equal to 0. S4530) in accordance with the future T The relationship between the active power capacity range of a wind power unit within a given time period and the corresponding continuous intervals is determined by subtracting the lower limit mismatch degree of each continuous interval obtained in S4520 from the upper limit mismatch degree of each continuous interval obtained in S4510, taking the absolute value of all results, and then selecting the minimum value among all the absolute values ​​to obtain the current start-up and shutdown status of the wind power unit and its future operation. T The quantified value of the mismatch between the setpoint of the total active power of the complementary integrated power supply within 1 time period; (S4600) Seek operational recommendations for shutting down wind turbine generators, including: S4610) Set the threshold parameter for recommending a shutdown operation; S4620) Setting variables v 3, v The initial value of 3 is 1; S4630) If v If 3 is less than or equal to the wind turbine shutdown sequence length, then set the original mismatch metric variable, which is equal to the mismatch metric obtained in S4530; otherwise, proceed to step S4660. (S4640) Calculate the possible fluctuation range of active power corresponding to the wind turbine shutdown sequence, sorting the sequence accordingly. v 3 Scope and Future T The quantified value of the mismatch in the total active power setpoint of the complementary integrated power supply within one time period includes: S4641) Calculating the Future T The active power capacity range of a wind power unit within a given time period is sorted in sequence according to the possible fluctuation range of active power corresponding to the wind turbine shutdown sequence. v The upper limit mismatch of the range of 3 is used to sort the possible fluctuation range of active power corresponding to the wind turbine shutdown sequence. v The upper limit of the range of 3 is reduced by the future. T The upper limit of each continuous interval included in the active power capacity range of the wind power unit within 1 time period is determined, and the calculation results are judged respectively. If it is greater than 0, the upper limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the upper limit mismatch degree is equal to 0. S4642) Calculating the Future T The active power capacity range of a wind power unit within a given time period is sorted in sequence according to the possible fluctuation range of active power corresponding to the wind turbine shutdown sequence. v The lower limit mismatch of the range of 3 will affect the future. T The active power capacity range of a wind power unit within a given time period is determined by subtracting the lower limit of each consecutive interval from the possible fluctuation range of active power corresponding to the wind turbine shutdown sequence, and sorting them in order. v The lower limit of the range of 3 is determined, and the calculation results are judged respectively. If it is greater than 0, the lower limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the lower limit mismatch degree is equal to 0. S4643) in accordance with the future T The relationship between the one-to-one correspondence of the active power capacity range of each wind power unit within a time period is determined by subtracting the lower limit mismatch degree of each continuous interval obtained in S4642 from the upper limit mismatch degree of each continuous interval obtained in S4641, taking the absolute value of all results, and then taking the minimum value among all the absolute values ​​to obtain the sequence of possible fluctuation ranges of active power corresponding to the wind turbine shutdown sequence. v 3 Scope and Future T The quantified value of the mismatch between the setpoint of the total active power of the complementary integrated power supply within 1 time period; S4650) Subtract the mismatched metric value obtained from S4643 from the original mismatched metric value variable, and perform the following operations based on the calculation result, including: S4651) If the calculation result is greater than or equal to the judgment threshold parameter set in S4610, then v 3= v 3+1, if at this time v If 3 is greater than the length of the wind turbine shutdown sequence, then proceed to step S4660; otherwise, update the original mismatch metric variable to the mismatch metric obtained in S4643, and proceed to step S4640 to continue execution. S4652) If the calculation result is less than the judgment threshold parameter set in S4610, then jump to step S4660 to continue execution; S4660) Based on variables v Suggestions for generating the value 3, including: S4661) If v If 3=1, no operation suggestions will be generated; S4662) If v If 3 > 1, then a shutdown operation suggestion will be generated, suggesting that the shutdown sequence of the wind turbine units be ordered from 1 to 1. v The wind turbine unit corresponding to 3-1 shall be shut down. (S4700) Seek operational recommendations for starting up available but not yet generating wind turbine units, including: S4710) Manually set the threshold parameters for recommending power-on operations; S4720) Setting variables v 4, v The initial value of 4 is 1; S4730) If v If 4 is less than or equal to the wind turbine start-up sequence length, then set the original mismatch metric variable, which is equal to the mismatch metric obtained in S4530; otherwise, proceed to step S4760. (S4740) Calculate the possible fluctuation range of active power corresponding to the wind turbine start-up sequence, sorting the sequence accordingly. v 4. Scope and Future T The quantified value of the mismatch in the total active power setpoint of the complementary integrated power supply within one time period includes: S4741) Calculating the Future T The active power capacity range of a wind power unit within a given time period is sorted in sequence according to the possible fluctuation range of active power corresponding to the wind turbine start-up sequence. v The upper limit mismatch of the range of 4 is used to sort the possible fluctuation range of active power corresponding to the wind turbine start-up sequence. v The upper limit of the range of 4 is reduced by the future. T The upper limit of each continuous interval included in the active power capacity range of the wind power unit within 1 time period is determined, and the calculation results are judged respectively. If it is greater than 0, the upper limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the upper limit mismatch degree is equal to 0. S4742) Calculating the Future T The active power capacity range of a wind power unit within a given time period is sorted in sequence according to the possible fluctuation range of active power corresponding to the wind turbine start-up sequence. v The lower limit mismatch of the range of 4 will affect the future. T The lower limit of each continuous interval included in the active power capacity range of the wind power unit within one time period is subtracted from the possible fluctuation range of active power corresponding to the start-up sequence of the wind turbine unit, sorted in sequence. v 4. The lower limit of the range is determined, and the calculation results are judged respectively. If it is greater than 0, the lower limit mismatch degree of the continuous interval is equal to the calculation result; otherwise, the lower limit mismatch degree is equal to 0. S4743) in accordance with the future T The relationship between the one-to-one correspondence of the active power capacity range of each wind power unit within a time period is determined by subtracting the lower limit mismatch degree of each continuous interval obtained in S4742 from the upper limit mismatch degree of each continuous interval obtained in S4741, taking the absolute value of all results, and then taking the minimum value among all the absolute values ​​to obtain the sequence of possible fluctuation ranges of active power corresponding to the wind turbine start-up sequence. v 4. Scope and Future T The quantified value of the mismatch between the setpoint of the total active power of the complementary integrated power supply within 1 time period; S4750) Subtract the mismatch measurement value obtained from S4743 from the original mismatch measurement value variable, and perform the following operations based on the calculation result, including: S4751) If the calculation result is greater than or equal to the judgment threshold parameter set in S4710, then v 4= v 4+1, if at this time v If 4 is greater than the wind turbine start-up sequence length, then proceed to step S4760; otherwise, update the original mismatch metric variable to the mismatch metric obtained in S4743, and proceed to step S4740 to continue execution. S4752) If the calculation result is less than the judgment threshold parameter set in S4710, then proceed to step S4760 to continue execution; S4760) Based on variables v Suggestions for generating the value 4, including: S4761) If v If 4=1, no operation suggestions will be generated; S4762) If v If 4 > 1, then start-up operation suggestions will be generated, suggesting that the wind turbine start-up sequence be ordered from 1 to 1. v The wind turbine unit corresponding to 4-1 shall be started up; S4800 generates operational suggestions to assist operators in decision-making, including: S4810) categorizes the operation suggestions generated by S4200 and displays them in an orderly manner according to priority; S4820) Displays the wind turbine shutdown operation suggestions generated by S4600 in an orderly manner and sends them to the wind power unit; S4830) displays the wind turbine startup operation suggestions generated by S4700 in an orderly manner and sends them to the wind power unit.

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