A power tight balance state configuration method, device, equipment and medium

Abstract

This invention discloses a method, apparatus, equipment, and medium for configuring power supply in a tight balance state. The method includes acquiring the adjustable resource regulation capabilities of the generation side and the adjustable resource regulation capabilities of the consumption side; determining adjustment schemes for the adjustable resources of the generation side and the consumption side based on these capabilities; wherein each adjustment scheme includes preset adjustment schemes with different priority levels; and executing the adjustment schemes for the adjustable resources of the generation side and the consumption side during periods of power supply deficit in the power system. This method assigns different priority levels based on the differences in the regulation characteristics of different resources, enabling rapid and orderly deployment of various adjustable resources on both the generation and consumption sides. Compared to the existing technology's optimization of mathematical models, the results are more accurate and faster.

Description

Technical Field

[0001] This invention belongs to the field of power system automation technology, and specifically relates to a method, device, equipment and medium for configuring a tight power balance state. Background Technology

[0002] The rapid development of wind and solar power generation has led to unstable power output, making it difficult to fully match peak demand. This has resulted in power shortages in some areas and frequent occurrences of power supply imbalances. Under such a tight power supply and demand balance, if extreme high temperatures or insufficient natural gas supply occur, there may be power shortages at certain times. In such cases, orderly power consumption at certain times will be unavoidable, and tight power supply in certain areas and at certain times will become the norm.

[0003] To address the tight power balance, it is necessary to mobilize resources across the entire system. Existing approaches generally fall into two categories: First, in academia, researchers model various generation and consumption-side resources, establishing coordinated optimization mathematical models. With a certain safety margin as a constraint and minimizing adjustment costs as the objective, clearing calculations determine the adjustment amounts for various resources. This involves increasing generation on the generation side and decreasing consumption on the consumption side to improve the system's safety margin. However, the clearing calculations of these optimization mathematical models have high requirements for the quality of input data; missing or inaccurate data can easily lead to non-convergence. Furthermore, treating consumption-side resources together with generation-side resources means that frequent adjustments to user electricity consumption plans can significantly impact user experience. Second, in the engineering field, grid dispatch and control personnel primarily consider the status of various types of generating units, adjusting unit start-up methods or implementing orderly power consumption and demand response based on manual experience. This approach is relatively crude, and the adjustment methods vary among different dispatch and control personnel.

[0004] Optimizing the mathematical model for clearing out power grid imbalances typically involves establishing constraints on various generation and consumption-side resources' participation in handling tight grid balances based on grid topology data and reported data. These constraints include regional balance requirements, positive and negative reserve capacity requirements, peak-shaving capacity requirements, ramp-up and slope-down capacity requirements, unit operation constraints, grid power flow constraints, and regulation capacity constraints. The optimization objective for these resources is then constructed: minimizing regulation costs. Based on the optimization objective and constraints, the adjustment power of each resource under these constraints is calculated to obtain the clearing result, which is then distributed for execution to alleviate the tight grid balance. However, the clearing calculation of the coordinated optimization mathematical model for handling tight grid balances requires high-quality input data; incomplete or inaccurate data can easily lead to non-convergence. Furthermore, with the expansion of the power grid, especially with the inclusion of a large number and diverse range of consumption-side resources in the model, the performance of the clearing calculation becomes difficult to guarantee, failing to meet the timeliness requirements for handling tight grid balances. Summary of the Invention

[0005] The purpose of this invention is to provide a method, apparatus, device, and medium for configuring a tight power balance, in order to solve the problem that in the prior art, when the data is inaccurate, it is difficult to guarantee the handling results of power system tight balance handling by optimizing mathematical model clearing calculation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A first aspect of the present invention provides a method for configuring a tight power balance state, comprising the following steps:

[0008] Obtain the adjustable resource regulation capabilities on the power generation side and the adjustable resource regulation capabilities on the power consumption side respectively;

[0009] Based on the adjustable resource regulation capabilities of the power generation side and the adjustable resource regulation capabilities of the power consumption side, the adjustable resource adjustment schemes of the power generation side and the adjustable resource adjustment schemes of the power consumption side are determined respectively.

[0010] During periods of power supply shortage in the power system, the aforementioned adjustable resource adjustment schemes on the generation side and the power consumption side shall be implemented.

[0011] Furthermore, after the step of executing the adjustable resource adjustment scheme on the power generation side and the adjustable resource adjustment scheme on the power consumption side, the method further includes the step of: adjusting the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side based on the execution status of the adjustable resource adjustment scheme on the power generation side and the adjustable resource adjustment scheme on the power consumption side.

[0012] Furthermore, in the steps of obtaining the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side respectively, the adjustable resource regulation capacity on the power generation side is the maximum power generation capacity minus the current output or planned output; wherein, the maximum power generation capacity includes: the maximum power generation capacity of the i-th coal-fired power unit at time t, the maximum power generation capacity of the i-th gas turbine unit at time t, and the maximum power generation capacity of the i-th hydropower unit at time t.

[0013] Furthermore, in the steps of obtaining the adjustable resource regulation capacity of the power generation side and the adjustable resource regulation capacity of the power consumption side respectively, the adjustable resource regulation capacity of the power consumption side includes: the load reduction amount at time t.

[0014] Furthermore, in the step of implementing the power generation-side adjustable resource adjustment scheme and the power consumption-side adjustable resource adjustment scheme during the period of power system power supply deficit, the period of power system power supply deficit is calculated according to the following formula:

[0015]

[0016] In the formula, P ΔR(t) represents the system's positive reserve deficit at time t; R(t) represents the system's positive reserve demand at time t; P s (i,t) represents the ultra-short-term predicted output of the i-th photovoltaic power station at time t; P w (i,t) represents the ultra-short-term predicted power output of the i-th wind farm at time t; P n (i,t) represents the planned output of the i-th nuclear power unit at time t; P e (i,t) represents the planned charging and discharging power of the i-th energy storage power station at time t; P i (t) represents the planned power received by the system at time t; P ld (t) represents the system load forecast at time t; N c N represents the number of coal-fired power units currently in operation. g N represents the number of gas turbine units currently in operation. h N represents the number of hydropower units. s N represents the number of photovoltaic power plants. w N represents the number of wind farms. n N represents the number of nuclear power units. e This refers to the number of energy storage power stations;

[0017] If the window of opportunity for handling a tight balance is reached... or P Δ (t)≤0; then the period during which the system has a positive reserve deficit is [t1,t2]. If t m If the time-limited deficit is maximized, then the maximum deficit in the system's positive reserve is P. Δ (t m ).

[0018] Furthermore, in the steps of determining the adjustable resource adjustment schemes on the power generation side and the power consumption side respectively, the adjustable resource adjustment scheme on the power generation side is as follows:

[0019] Start the gas turbine units according to the preset first priority order until the system's positive reserve deficit P is met. Δ (t m The order of the first priority levels is as follows: units in a warm state are given priority to start up, units located in the heavy load supply area are given priority to start up, units with subsequent start-up plans are started up in advance, and units with subsequent shutdown plans are shut down later.

[0020] After adjusting the gas turbine unit's startup, the system's positive reserve deficit is P. Δ1 ;

[0021] If P Δ1 If the value is greater than 0, adjust the start-up of coal-fired units according to the preset second priority level until the system's positive reserve deficit P is met. Δ1The order of the second priority level is as follows: units with subsequent start-up plans are started up first, and units with subsequent shutdown plans are shut down later.

[0022] After adjusting the start-up of the coal-fired power unit, the system's positive reserve deficit is P. Δ2 ;

[0023] If P Δ2 >0, adjust the output plan of the local and county-level generating units until the system's positive reserve deficit P is met. Δ2 ;

[0024] After adjusting the power output plan of the county-level generating units, the system's reserve deficit is P. Δ3 ;

[0025] If P Δ4 If the value is greater than 0, increase the purchase of external power until the system's positive reserve deficit P is met. Δ4 ;

[0026] After increasing the purchase of external power, the system's reserve deficit is P. Δ4

[0027] If P Δ4 If the value is greater than 0, adjust the energy storage power station's charging and discharging plan according to the preset third priority level until the system's positive reserve deficit P is met. Δ4 The order of the third priority level is as follows: energy storage power stations located in the heavy-load supply area are given priority to discharge; energy storage power stations with low unit regulation capacity prices are given priority to discharge; energy storage power stations with fast regulation rates are given priority to discharge; and energy storage power stations with large capacity are given priority to discharge.

[0028] Furthermore, in the steps of determining the adjustable resource adjustment schemes on the power generation side and the power consumption side respectively, the adjustable resource adjustment scheme on the power consumption side is as follows:

[0029] If P Δ5 If the power consumption is greater than 0, adjust the power consumption of adjustable resources on the power consumption side according to the preset fourth priority level until the system's positive reserve deficit P is met. Δ5 The order of the fourth priority level is as follows: power consumption under priority of adjustable resources on the power consumption side located in the heavy load supply area, power consumption under priority of adjustable resources on the power consumption side with low unit adjustment capacity price, power consumption under priority of adjustable resources on the power consumption side with fast adjustment rate, power consumption under priority of adjustable resources on the power consumption side with large capacity, and power consumption under priority of adjustable resources on the power consumption side with good historical response.

[0030] After adjusting the power consumption of adjustable resources on the power consumption side, the system's positive reserve deficit is P. Δ6 ;

[0031] If P Δ6If the value is ≤0, the shortfall handling is completed; otherwise, an alarm signal is given, indicating that there is a risk to the safe operation of the system.

[0032] A second aspect of the present invention provides an electrical tight balance state configuration device, comprising:

[0033] The acquisition module is used to acquire the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side, respectively.

[0034] The scheme generation module is used to determine the adjustable resource adjustment schemes on the power generation side and the adjustable resource adjustment schemes on the power consumption side based on the adjustable resource adjustment capabilities on the power generation side and the power consumption side, respectively.

[0035] The execution module is used to execute the adjustable resource adjustment scheme on the generation side and the adjustable resource adjustment scheme on the consumption side during periods of power supply shortage in the power system.

[0036] A third aspect of the present invention provides an electronic device including a processor and a memory, the processor being configured to execute a computer program stored in the memory to implement the above-described power tight balance configuration method.

[0037] In a fourth aspect, the present invention provides a computer-readable storage medium storing at least one instruction that, when executed by a processor, implements the above-described power tight balance configuration method.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] This solution provides a power tight balance configuration method that acquires the adjustable resource regulation capabilities of both the generation and consumption sides. Based on these capabilities, it determines adjustment schemes for both sides. Each scheme includes preset adjustment levels with different priority levels. During periods of power system supply shortage, these schemes are executed. This method assigns different priority levels based on the varying regulation characteristics of different resources, enabling rapid and orderly deployment of various adjustable resources on both the generation and consumption sides. This alleviates the power tight balance and minimizes user power outages caused by load changes. Compared to existing methods that rely on optimized mathematical models, this approach yields more accurate and faster results. Attached Figure Description

[0040] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0041] Figure 1 This is a schematic diagram of a power tight balance configuration method according to the present invention.

[0042] Figure 2 This is a schematic diagram of a power tight balance configuration method according to the present invention.

[0043] Figure 3 This is a structural block diagram of a power tight balance configuration device according to the present invention.

[0044] Figure 4 This is a structural block diagram of an electronic device according to the present invention. Detailed Implementation

[0045] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0046] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0047] Explanation of related terms

[0048] Adjustable resources on the power generation side: generally considered to include coal-fired power units, hydropower units, pumped storage units, electrochemical energy storage, etc., which have flexible adjustment capabilities.

[0049] Adjustable resources on the electricity consumption side are generally considered to be loads that can actively participate in grid operation control, interact with the grid, and possess controllable characteristics. Load controllability is manifested in its flexibility and variability within a certain time period. According to national standards, adjustable resources on the electricity consumption side are divided into four categories: smart energy service platform loads, vehicle-to-everything (V2X) platforms, third-party independent entity (virtual power plant) aggregation platforms, and large user-mode access loads.

[0050] A tight power balance is an unconventional state in which the supply and demand of electricity are strained during specific periods due to factors such as abnormal weather, power market fluctuations, accidents, and abnormal macroeconomic conditions. Specifically, this manifests as insufficient reserve capacity for power generation, insufficient transmission capacity, and insufficient local power supply capacity. Although the supply and demand are roughly balanced in the short term, power supply cannot be guaranteed at all times.

[0051] Example 1

[0052] This solution provides a power tight balance configuration method that considers adjustable resources on both the generation and consumption sides, enabling the orderly use of various adjustable resources on both sides. This not only alleviates the power tight balance but also minimizes the user's perception of power outages caused by load calls. Compared with the existing technology's optimization of mathematical models, the results are more accurate and faster.

[0053] like Figure 1 and 2 As shown, a method for configuring a tight power balance includes the following steps:

[0054] S1. Obtain the adjustable resource regulation capabilities on the power generation side and the adjustable resource regulation capabilities on the power consumption side, respectively.

[0055] In this plan, the maximum generating capacity of the power plant's declared generating units minus the current (or planned) output is used as the adjustable resource capacity on the generation side. Specifically, the maximum generating capacity of the generating units includes: the maximum generating capacity of the i-th coal-fired power unit at time t is P. cmax (i,t), MW; the maximum power generation capacity of the i-th gas turbine unit at time t is P. gmax (i,t), MW; the maximum generating capacity P of the i-th hydropower unit at time t. hmax (i,t), MW.

[0056] In this scheme, when a user declares the adjustable capacity of adjustable resources on the power consumption side, the adjustable capacity information of the i-th adjustable resource on the power consumption side includes: the adjustable amount P at time t. dn (i,t), MW.

[0057] S2. Based on the adjustable resource adjustment capabilities of the power generation side and the adjustable resource adjustment capabilities of the power consumption side, determine the adjustable resource adjustment schemes of the power generation side and the adjustable resource adjustment schemes of the power consumption side respectively; wherein, the adjustable resource adjustment schemes of the power generation side and the adjustable resource adjustment schemes of the power consumption side each include preset adjustment schemes with different priority levels.

[0058] The adjustment plans for adjustable resources on the generation side and the adjustment plans for adjustable resources on the consumption side shall be summarized and implemented only after passing the power grid safety verification.

[0059] S3. During periods of power supply shortage in the power system, implement the aforementioned adjustable resource adjustment scheme on the generation side and the adjustable resource adjustment scheme on the consumption side.

[0060] In this plan, based on the unit's day-ahead power generation plan, power receiving plan, ultra-short-term renewable energy forecast data, ultra-short-term system load forecast data, and system reserve demand, the system reserve deficit and the periods during which the deficit exists are calculated:

[0061]

[0062] In the formula, PΔ R(t) represents the system's positive reserve deficit at time t, in MW; R(t) represents the system's positive reserve demand at time t, in MW; P s (i,t) represents the ultra-short-term predicted power output of the i-th photovoltaic power station at time t, in MW; P w (i,t) represents the ultra-short-term predicted power output (MW) of the i-th wind farm at time t; P n (i,t) represents the planned output (MW) of the i-th nuclear power unit at time t; P e (i,t) represents the planned charging and discharging power (MW) of the i-th energy storage power station at time t; P i (t) represents the planned power received by the system at time t, in MW; P ld (t) represents the system load forecast at time t, in MW; N c N represents the number of coal-fired power units currently in operation. g N represents the number of gas turbine units currently in operation. h N represents the number of hydropower units. s N represents the number of photovoltaic power plants. w N represents the number of wind farms. n N represents the number of nuclear power units. e This represents the number of energy storage power stations.

[0063] If the window of opportunity for handling a tight balance is reached...

[0064]

[0065]

[0066] The period during which the system has a positive reserve deficit is [t1, t2]. m If the time-limited deficit is maximized, then the maximum deficit in the system's positive reserve is P. Δ (t m ).

[0067] In this plan, the adjustment scheme for adjustable resources on the power generation side is as follows:

[0068] S10. Adjust the gas turbine units to start up according to the preset first priority level until the system's positive reserve deficit P is met. Δ (t m The order of the first priority levels is as follows: a > b > c > d.

[0069] a. Units that are in a warm state should be started first;

[0070] b. Units located in the heavy-load supply zone should be started first;

[0071] c. Units scheduled to start up later should be started up in advance;

[0072] d. Units with subsequent shutdown plans will have their shutdowns postponed.

[0073] After adjusting the gas turbine unit's startup, the system's positive reserve deficit is P. Δ1 ;

[0074]

[0075] In the formula, N g2 For t m The number of gas turbine units that are added to the start-up schedule or whose shutdown is postponed at any time.

[0076] S20, if P Δ1 If the value is greater than 0, adjust the start-up of coal-fired units according to the preset second priority level until the system's positive reserve deficit P is met. Δ1 The order of the second priority levels is: a > b.

[0077] a. Units with subsequent startup plans will be prioritized for startup;

[0078] b. Units with subsequent shutdown plans will have their shutdowns postponed.

[0079] After adjusting the start-up of the coal-fired power unit, the system's positive reserve deficit is P. Δ2 ;

[0080]

[0081] In the formula, N c2 For t m The number of coal-fired power units that start up earlier or shut down later than scheduled.

[0082] S30, if P Δ2 >0, adjust the output plan of the local and county-level generating units until the system's positive reserve deficit P is met. Δ2 ;

[0083] After adjusting the power output plan of the county-level generating units, the system's reserve deficit is P. Δ3 ;

[0084] P Δ2 =P Δ2 -P nu (t m )

[0085] In the formula, P nu (t m ) for t m The plan is to increase the output of the local county-level generator units.

[0086] S40, if P Δ3 If the value is greater than 0, increase the purchase of external power until the system's positive reserve deficit P is met. Δ3 ;

[0087] After increasing the purchase of external power, the system's reserve deficit is P. Δ4

[0088] P Δ4 =P Δ3 -P ia (t m )

[0089] In the formula, P ia (t m ) for t m Constantly increase the purchased electricity.

[0090] S50, if P Δ4 If the value is greater than 0, adjust the energy storage power station's charging and discharging plan according to the preset third priority level until the system's positive reserve deficit P is met. Δ4 The order of the third priority level is: a > b > c > d.

[0091] a. Energy storage power stations located in heavy-load power supply areas are given priority for discharge;

[0092] b. Energy storage power stations with lower unit regulation capacity prices are given priority for discharge.

[0093] c. Energy storage power stations with fast adjustment rates are given priority for discharge;

[0094] d. Large-capacity energy storage power stations are given priority for discharge.

[0095] After adjusting the charging and discharging plan of the energy storage power station, the system deficit is

[0096]

[0097] In the formula, N e2 For t m The number of energy storage stations that need to be adjusted in real time for charging and discharging plans, P ea (i,t m ) represents the i-th energy storage power station t m The discharge plan is constantly being increased.

[0098] In this plan, the adjustable resource adjustment scheme on the power consumption side is as follows:

[0099] If P Δ5 If the power consumption is greater than 0, adjust the power consumption of adjustable resources on the power consumption side according to the preset fourth priority level until the system's positive reserve deficit P is met. Δ5 The order of the fourth priority level is: a > b > c > d > e;

[0100] a. Power consumption power should be prioritized for adjustment of power supply resources on the demand side located in the heavy-load power supply area;

[0101] b. Prioritize the use of adjustable resources on the electricity consumption side with lower unit adjustable capacity prices for power consumption;

[0102] c. Prioritize the use of power-adjustable resources on the power consumption side with a fast adjustment rate to reduce the power consumption;

[0103] d. For power-consuming units with large capacity, priority should be given to accessing power from adjustable resources.

[0104] e. Prioritize the use of adjustable resources on the power consumption side with good historical response for power consumption.

[0105] After adjusting the power consumption of adjustable resources on the power consumption side, the system's positive reserve deficit is P. Δ6 ;

[0106]

[0107] In the formula, N u For t m The number of adjustable resources on the power consumption side that constantly adjusts power consumption, P dn (i,t m ) represents the i-th adjustable resource t on the power consumption side. m The amount that can be adjusted down at any given time.

[0108] If P Δ6 If the value is ≤0, the shortfall handling is completed; otherwise, an alarm signal is given, indicating that there is a risk to the safe operation of the system.

[0109] S4. Based on the implementation status of the power generation-side adjustable resource adjustment scheme and the power consumption-side adjustable resource adjustment scheme, adjust the power generation-side adjustable resource regulation capability and the power consumption-side adjustable resource regulation capability.

[0110] Specifically, it includes:

[0111] Collect information on the actual implementation of adjustable resource adjustment plans on the power generation and consumption sides.

[0112] Calculate the response of adjustable resources on the power generation and consumption sides:

[0113]

[0114] In the formula, P i P represents the responsiveness of the i-th adjustable resource. f (i,t) represents the actual power of the i-th adjustable resource at time t, in MW; P p (i,t) represents the adjusted planned power (MW) of the i-th adjustable resource at time t.

[0115] Based on the responsiveness of adjustable resources, combined with resource characteristics, power supply structure, and power consumption characteristics, their regulation capability is adjusted. Specifically, adjustments are made based on human experience. For example, if the regulation capability of an adjustable resource is 120, and the generated regulation command is 100, but based on the actual response, only 80 of the adjustable resource is actually executed, then the regulation capability is discounted, for example, by 20%, taking into account the characteristics of the adjustable resource, its power consumption characteristics, and the power supply structure of the power grid. In subsequent decision-making, the regulation capability of the adjustable resource is calculated as 120 * 0.8.

[0116] Using the method of this embodiment, assuming a power grid is divided into two supply areas, P1 and P2, the system load forecast data, reserve demand data, wind power output forecast data, and photovoltaic power output forecast data from 14:15 to 18:00 are shown in Table 1:

[0117] Table 1 System Prediction Data

[0118] Unit: MW

[0119]

[0120]

[0121] The adjustable resource data on the power generation and consumption side are shown in Table 2:

[0122] Table 2 Adjustable Resources on the Generation and Consumption Side

[0123] Unit: MW

[0124]

[0125] The planned data are shown in Tables 3-1 and 3-2.

[0126] Table 3. Planning Data

[0127] Unit: MW

[0128] Table 3-1

[0129]

[0130]

[0131] Table 3-2

[0132]

[0133]

[0134] First, based on the unit's day-ahead power generation plan, power receiving plan, ultra-short-term forecast data of new energy sources, ultra-short-term load forecast data of the system, and the system's reserve requirement, the system's reserve deficit is calculated as shown in Table 4.

[0135] Table 4 System Reserve Deficiencies

[0136] Unit: MW

[0137] time load Maximum power generation capacity Ready for use backup requirements Reserve vacancies 14:15 4310 5000 690 500 0 14:30 4530 5120 590 500 0 14:45 4768 5330 562 500 0 15:00 4301 4810 509 500 0 15:15 4286 4800 514 500 0 15:30 4735 5240 505 500 0 15:45 4720 5220 500 500 0 16:00 4330 4830 500 500 0 16:15 4085 4220 135 500 365 16:30 3745 3920 175 500 325 16:45 3550 3720 170 500 330 17:00 3490 3820 330 500 170 17:15 3310 3810 500 500 0 17:30 3280 3820 540 500 0 17:45 3095 3720 625 500 0 18:00 3065 3700 635 500 0

[0138] The system's standby capacity is short-term from 16:15 to 17:00, with a maximum short-term capacity of 365MW and a maximum short-term capacity at 16:15.

[0139] The next step is to determine the adjustment plan for adjustable resources on the power generation side.

[0140] First, adjust the start-up of gas turbine units according to priority. If neither G3 nor G4, which are currently shut down, have maintenance plans, G4 will be started first because its supply area P2 is a heavily loaded supply area. However, the system's reserve requirement has not yet been met (300MW < 365MW), and the remaining reserve is 65MW. Therefore, G3 also needs to be started. At this point, the positive reserve requirement is met (300MW + 300MW > 365MW), and the process is complete.

[0141] However, since G3 is scheduled for maintenance and cannot be started, the coal-fired unit needs to be started. But the currently shut-down coal-fired unit G7 has no start-up plan, so it cannot be started in time. The output plan of the local and county dispatching units also needs to be adjusted.

[0142] At 16:15, the planned output of the county-level dispatch equivalent unit G12 is 220MW, and the maximum power generation capacity is 250MW. Therefore, the output of the county-level dispatch equivalent unit G12 will be increased by 30MW. At this time, the remaining deficit is 35MW, and it is necessary to purchase more external power.

[0143] However, at 16:15 there was no remaining trading space, and the charging and discharging plan of the entire energy storage power station needed to be adjusted.

[0144] At 16:15, the energy storage power station E1 was not charging or discharging. The maximum discharge power was 20MW. Therefore, the discharge power of the energy storage power station E1 was arranged to be 20MW. At this time, the remaining shortage was 15MW, and the adjustable resources on the power consumption side still needed to be adjusted.

[0145] The next step is to determine the adjustment plan for adjustable resources on the power consumption side.

[0146] Since P2 is a heavily loaded area, the power consumption plan of adjustable load C2 is adjusted first. The adjustable capacity of C2 is 60MW, and only 15MW needs to be reduced to meet the remaining deficit. Adjustable load C1 does not need to be adjusted. The process is now complete.

[0147] Finally, the adjustable resource adjustment plans for the power generation and consumption sides are compiled and generated, as shown in Table 5, for issuance and implementation.

[0148] Table 5 Adjustment Plan for Adjustable Resources on the Power Generation and Consumption Sides

[0149] Unit: MW

[0150] Adjust object Adjusting the time period Adjustment method Affecting capacity Gas turbine unit G4 16:15～17:00 Power on 300 Energy storage power station E1 16:15～17:00 Discharge 20 County and prefecture dispatching equivalent unit G12 16:15～17:00 Increase output 30 Adjustable load C2 16:15～17:00 Reduce electricity consumption 15 total 365

[0151] The above embodiments calculate whether there is a shortage in the system's reserve capacity based on system prediction and planning data. Different priority levels are assigned to the adjustable resources on the generation and consumption sides according to their different adjustment characteristics. The power generation and consumption plans of various resources are adjusted in the order of first generating resources and then consuming resources, achieving rapid and orderly deployment of various adjustable resources on both sides. This invention can alleviate the tight power balance and minimize the user's perception of power outages caused by load changes, and is more accurate and faster than existing mathematical optimization models.

[0152] Example 2

[0153] like Figure 3 As shown, a power tight balance configuration device includes:

[0154] The acquisition module is used to acquire the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side, respectively.

[0155] In the acquisition module, the adjustable resource regulation capacity on the power generation side is the maximum power generation capacity minus the current or planned output. The maximum power generation capacity includes: the maximum power generation capacity of the i-th coal-fired power unit at time t, the maximum power generation capacity of the i-th gas-fired power unit at time t, and the maximum power generation capacity of the i-th hydropower unit at time t. The adjustable resource regulation capacity on the power consumption side includes: the load that can be reduced at time t.

[0156] The scheme generation module is used to determine the adjustable resource adjustment schemes on the power generation side and the adjustable resource adjustment schemes on the power consumption side based on the adjustable resource adjustment capabilities on the power generation side and the power consumption side, respectively.

[0157] In the scheme generation module, the adjustable resource adjustment scheme on the power generation side is as follows:

[0158] Start the gas turbine units according to the preset first priority order until the system's positive reserve deficit P is met. Δ (t m The order of the first priority levels is as follows: units in a warm state are given priority to start up, units located in the heavy load supply area are given priority to start up, units with subsequent start-up plans are started up in advance, and units with subsequent shutdown plans are shut down later.

[0159] After adjusting the gas turbine unit's startup, the system's positive reserve deficit is P. Δ1 ;

[0160] If P Δ1 If the value is greater than 0, adjust the start-up of coal-fired units according to the preset second priority level until the system's positive reserve deficit P is met.Δ1 The order of the second priority level is as follows: units with subsequent start-up plans are started up first, and units with subsequent shutdown plans are shut down later.

[0161] After adjusting the start-up of the coal-fired power unit, the system's positive reserve deficit is P. Δ2 ;

[0162] If P Δ2 >0, adjust the output plan of the local and county-level generating units until the system's positive reserve deficit P is met. Δ2 ;

[0163] After adjusting the power output plan of the county-level generating units, the system's reserve deficit is P. Δ4 ;

[0164] If P Δ3 If the value is greater than 0, increase the purchase of external power until the system's positive reserve deficit P is met. Δ3 ;

[0165] After increasing the purchase of external power, the system's reserve deficit is P. Δ4

[0166] If P Δ4 If the value is greater than 0, adjust the energy storage power station's charging and discharging plan according to the preset third priority level until the system's positive reserve deficit P is met. Δ4 The order of the third priority level is as follows: energy storage power stations located in the heavy-load supply area are given priority to discharge; energy storage power stations with low unit regulation capacity prices are given priority to discharge; energy storage power stations with fast regulation rates are given priority to discharge; and energy storage power stations with large capacity are given priority to discharge.

[0167] In the scheme generation module, the adjustable resource adjustment scheme on the power consumption side is as follows:

[0168] If P Δ5 If the power consumption is greater than 0, adjust the power consumption of adjustable resources on the power consumption side according to the preset fourth priority level until the system's positive reserve deficit P is met. Δ5 The order of the fourth priority level is as follows: power consumption under priority of adjustable resources on the power consumption side located in the heavy load supply area, power consumption under priority of adjustable resources on the power consumption side with low unit adjustment capacity price, power consumption under priority of adjustable resources on the power consumption side with fast adjustment rate, power consumption under priority of adjustable resources on the power consumption side with large capacity, and power consumption under priority of adjustable resources on the power consumption side with good historical response.

[0169] After adjusting the power consumption of adjustable resources on the power consumption side, the system's positive reserve deficit is P. Δ6 ;

[0170] If P Δ6 If the value is ≤0, the shortfall handling is completed; otherwise, an alarm signal is given, indicating that there is a risk to the safe operation of the system.

[0171] The execution module is used to execute the adjustable resource adjustment scheme on the generation side and the adjustable resource adjustment scheme on the consumption side during periods of power supply shortage in the power system.

[0172] In the execution module, the time period of power supply deficit in the power system is calculated according to the following formula:

[0173]

[0174] In the formula, P Δ R(t) represents the system's positive reserve deficit at time t; R(t) represents the system's positive reserve demand at time t; P s (i,t) represents the ultra-short-term predicted output of the i-th photovoltaic power station at time t; P w (i,t) represents the ultra-short-term predicted power output of the i-th wind farm at time t; P n (i,t) represents the planned output of the i-th nuclear power unit at time t; P e (i,t) represents the planned charging and discharging power of the i-th energy storage power station at time t; P i (t) represents the planned power received by the system at time t; P ld (t) represents the system load forecast at time t; N c N represents the number of coal-fired power units currently in operation. g N represents the number of gas turbine units currently in operation. h N represents the number of hydropower units. s N represents the number of photovoltaic power plants. w N represents the number of wind farms. n N represents the number of nuclear power units. e This refers to the number of energy storage power stations;

[0175] If the window of opportunity for handling a tight balance is reached... P Δ (t)>0 or P Δ (t)≤0; then the period during which the system has a positive reserve deficit is [t1,t2]. If t m If the time-limited deficit is maximized, then the maximum deficit in the system's positive reserve is P. Δ (t m ).

[0176] The correction module is used to correct the adjustable resource regulation capabilities of the power generation side and the adjustable resource regulation capabilities of the power consumption side based on the implementation status of the power generation-side adjustable resource adjustment scheme and the power consumption-side adjustable resource adjustment scheme.

[0177] Example 3

[0178] like Figure 3As shown, the present invention also provides an electronic device 100 for implementing a power tight balance state configuration method; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104. The memory 101 can be used to store the computer program 103, and the processor 102 implements the steps of the power tight balance state configuration method of Embodiment 1 by running or executing the computer program stored in the memory 101 and calling data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area, wherein the program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 100 (such as audio data), etc. In addition, memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0179] At least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 102 may be a microprocessor or any conventional processor. Processor 102 is the control center of electronic device 100, connecting various parts of electronic device 100 via various interfaces and lines.

[0180] The memory 101 in the electronic device 100 stores multiple instructions to implement a power tight balance state configuration method, and the processor 102 can execute multiple instructions to achieve the following:

[0181] Obtain the adjustable resource regulation capabilities on the power generation side and the adjustable resource regulation capabilities on the power consumption side respectively;

[0182] Based on the adjustable resource regulation capabilities of the power generation side and the adjustable resource regulation capabilities of the power consumption side, the adjustable resource adjustment schemes of the power generation side and the adjustable resource adjustment schemes of the power consumption side are determined respectively.

[0183] During periods of power supply shortage in the power system, the aforementioned adjustable resource adjustment schemes on the generation side and the power consumption side shall be implemented.

[0184] Based on the implementation status of the power generation-side adjustable resource adjustment scheme and the power consumption-side adjustable resource adjustment scheme, the adjustment capabilities of the power generation-side adjustable resources and the power consumption-side adjustable resources are adjusted.

[0185] Example 4

[0186] If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, and read-only memory (ROM).

[0187] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0188] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0189] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0190] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0191] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for configuring a tight power balance state, characterized in that, Includes the following steps: Obtain the adjustable resource regulation capabilities on the power generation side and the adjustable resource regulation capabilities on the power consumption side respectively; Based on the adjustable resource regulation capabilities of the power generation side and the power consumption side, adjustment schemes for adjustable resources on the power generation side and the power consumption side are determined respectively; wherein, the adjustment schemes for adjustable resources on the power generation side and the power consumption side each include preset adjustment schemes with different priority levels. Based on the unit's day-ahead power generation plan, power receiving plan, ultra-short-term renewable energy forecast data, ultra-short-term system load forecast data, and system reserve demand, calculate the system reserve deficit and the periods during which the deficit exists; the system reserve deficit is calculated according to the following formula: In the formula, for The timetable system is currently in reserve for shortages; for The system is in standby mode. For the first Photovoltaic power station The output of ultra-short-term forecasts at any given moment; For the first wind farm The output of ultra-short-term forecasts at any given moment; For the first One nuclear power unit Plan your efforts at all times; For the first Energy storage power station The planned charging and discharging power at any given time; for The system's planned power supply at any given time; for Time-based system load forecasting; This represents the number of coal-fired power units currently in operation. This represents the number of gas turbine units currently in operation. This refers to the number of hydropower units. The number of photovoltaic power stations, For the number of wind farms, This refers to the number of nuclear power units. This refers to the number of energy storage power stations; For the first One coal-fired power unit is in operation. Maximum power generation capacity at any given moment; For the first One gas turbine unit is in operation. Maximum power generation capacity at any given moment; For the first One hydropower unit Maximum power generation capacity at any given moment; If the window of opportunity for handling a tight balance is reached... or The period during which the system has a positive reserve deficit is: ,like If the current time-limited deficit is the largest, then the maximum deficit in the system's positive and negative reserves is: ; During periods of power supply deficit in the power system, the aforementioned adjustable resource adjustment scheme on the generation side and the adjustable resource adjustment scheme on the consumption side are implemented. The adjustable resource adjustment scheme on the generation side includes: Start the gas turbine units according to the preset first priority order until the system's positive and negative standby requirements are met. The order of the first priority levels is as follows: units in a warm state are given priority to start up, units located in the heavy load supply area are given priority to start up, units with subsequent start-up plans are started up in advance, and units with subsequent shutdown plans are shut down later. After adjusting the gas turbine unit startup, the system's positive standby deficit is: ; like The coal-fired power units are started up according to the preset second priority order until the system's positive reserve deficit is met. The order of the second priority level is as follows: units with subsequent start-up plans are started up first, and units with subsequent shutdown plans are shut down later. After adjusting the start-up of the coal-fired power units, the system's reserve deficit is: ; like Adjust the power output plan of local and county-level generating units until the system's reserve capacity is met. ; After adjusting the power output plan of the county-level generating units, the system's current reserve shortage is... ; like Increase the procurement of external power until the system's positive and negative reserve deficits are met. ; After increasing the purchase of external power, the system's reserve deficit is ; like The charging and discharging plans of the energy storage power station are adjusted according to the preset third priority level until the system's positive reserve deficit is met. The order of the third priority level is as follows: energy storage power stations located in heavy-load supply areas are given priority to discharge; energy storage power stations with low unit regulation capacity prices are given priority to discharge; energy storage power stations with fast regulation rates are given priority to discharge; and energy storage power stations with large capacity are given priority to discharge. After adjusting the charging and discharging plan of the energy storage power station, the system's reserve deficit is: .

2. The power tight balance configuration method according to claim 1, characterized in that, After the step of implementing the adjustable resource adjustment scheme on the power generation side and the adjustable resource adjustment scheme on the power consumption side, the method further includes the step of: adjusting the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side based on the implementation status of the adjustable resource adjustment scheme on the power generation side and the adjustable resource adjustment scheme on the power consumption side.

3. The power tight balance configuration method according to claim 1, characterized in that, In the steps of obtaining the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side respectively, the adjustable resource regulation capacity on the power generation side is the maximum power generation capacity minus the current output or planned output; wherein, the maximum power generation capacity includes: the first One coal-fired power unit is in operation. Maximum power generation capacity at any time, the first One gas turbine unit is in operation. Maximum power generation capacity at any time, the first One hydropower unit Maximum power generation capacity at any given time.

4. The power tight balance configuration method according to claim 1, characterized in that, In the steps of separately acquiring the adjustable resource regulation capabilities on the generation side and the adjustable resource regulation capabilities on the consumption side, the adjustable resource regulation capabilities on the consumption side include: The load at any given time can be adjusted downwards.

5. The power tight balance configuration method according to claim 1, characterized in that, In the steps of determining the adjustable resource adjustment schemes on the power generation side and the power consumption side respectively, the adjustable resource adjustment schemes on the power consumption side include: like Adjust the power consumption of adjustable resources on the power consumption side according to the preset fourth priority level until the system's positive and negative reserve requirements are met. The order of the fourth priority level is as follows: power consumption under priority of adjustable resources on the power consumption side located in the heavy load supply area, power consumption under priority of adjustable resources on the power consumption side with low unit adjustment capacity price, power consumption under priority of adjustable resources on the power consumption side with fast adjustment rate, power consumption under priority of adjustable resources on the power consumption side with large capacity, and power consumption under priority of adjustable resources on the power consumption side with good historical response. After adjusting the power consumption of adjustable resources on the power consumption side, the system's positive and negative reserve deficit is... ; like If the error is resolved, the shortfall will be handled; otherwise, an alarm signal will be issued to indicate that there is a risk to the system's safe operation.

6. A power tight balance state configuration device, used to implement the power tight balance state configuration method according to any one of claims 1 to 5, characterized in that, include: The acquisition module is used to acquire the adjustable resource regulation capacity on the power generation side and the adjustable resource regulation capacity on the power consumption side, respectively. The scheme generation module is used to determine the adjustable resource adjustment schemes on the power generation side and the adjustable resource adjustment schemes on the power consumption side based on the adjustable resource adjustment capabilities on the power generation side and the power consumption side, respectively. The execution module is used to execute the adjustable resource adjustment scheme on the generation side and the adjustable resource adjustment scheme on the consumption side during periods of power supply shortage in the power system.

7. An electronic device, characterized in that, It includes a processor and a memory, the processor being used to execute a computer program stored in the memory to implement the power tight balance state configuration method as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one instruction, which, when executed by a processor, implements the power tight balance configuration method as described in any one of claims 1 to 5.

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