Automatic startup and shutdown method based on power generation plan, auxiliary service and unit characteristics

Abstract

The invention discloses an automatic startup and shutdown method based on a power generation plan, auxiliary service and unit characteristics, and the method comprises the steps: obtaining related data participating in automatic startup and shutdown, and verifying whether the related data meets the conditions of automatic startup and shutdown operation or not; wherein the related data at least comprises an active plan curve and an auxiliary service market clearing capacity; if yes, necessary startup and shutdown calculation is carried out according to the active planning curve and the auxiliary service market clearing capacity, and a calculation result is obtained; and according to the calculation result and based on the limited operation area of each unit, carrying out optimized startup and shutdown operation to obtain an optimized startup and shutdown operation result. The method can be suitable for all water plant stations which start and stop according to a plan curve, and meanwhile, effective start and stop combination analysis can be carried out by combining real-time clearing conditions of an auxiliary service market.

Description

Technical Field

[0001] The present invention relates to the technical field of power system automation control, and in particular to an automatic start-stop method based on power generation plan, auxiliary services and unit characteristics. Background Art

[0002] With the accelerated advancement of the electricity spot market, the real-time active power planning curves of hydropower plants participating in spot market regulation will change in real time with the demand of the electricity market, and the start-up and shutdown operations of hydropower plants will be more frequent than in the past. In addition, due to the combined influence of various factors such as the clearing of the auxiliary service market (including the clearing of the frequency regulation market and the standby market), the time of the unit restricted operating area, and the limit on the number of units started, the duty officer needs to calculate the start-up and shutdown requirements and operate them at any time according to the system requirements and unit status for the start-up and shutdown of the unit, which has increased dramatically.

[0003] Among them, the frequency regulation market is based on the plant station. On the basis of the active power planning curve of the whole plant, the clearing capacity of the frequency regulation market is reserved upward and downward respectively, and the upper and lower limits of active power regulation are obtained. That is, the active power of the whole plant is automatically adjusted by the dispatcher according to the grid frequency within the upper and lower limits. The reserve market refers to the reserve capacity that can be adjusted within 10 minutes on the power generation side, that is, the capacity that can be quickly called outside the active power planning curve and frequency regulation. The ancillary service market is a general term for frequency regulation, peak regulation and reserve markets.

[0004] The unit operation area is divided into recommended operation area, vibration area and restricted operation area. The vibration area refers to an area where a unit cannot operate stably in a certain active power regulation area, except for short-term operation during the process of increasing or decreasing the load of the unit, and cannot operate for a long time. The restricted operation area is an area with limited operation time in a certain active power regulation area, and the operation should be minimized as much as possible when conditions permit.

[0005] At present, the start-up and shutdown methods of hydropower plants controlled by a certain centralized control center can be divided into four types, namely, fully automatic and semi-automatic start-up and shutdown combined with the active power plan curve, manual start-up and shutdown, and start-up and shutdown according to dispatching commands. Among them, the fully automatic start-up and shutdown and semi-automatic start-up and shutdown methods combined with the active power plan curve are calculated and analyzed based on the current active power plan curve, without considering important factors such as the clearance of the auxiliary service market, the operating efficiency of the unit, the maximum and minimum number of units in operation, and the start-up and shutdown priority of the unit. Automatic or semi-automatic start-up and shutdown operations only through the active power plan curve do not meet the real-time adjustment of the auxiliary service market demand, and there are safety hazards. The duty officer also needs to manually intervene in combination with these important influencing factors. At present, regardless of automatic, semi-automatic or manual start-up and shutdown, the specific number of units started and the start-up order are still determined by the duty officer through comprehensive analysis. The workload and calculation amount are still huge, and safety risks still exist.

[0006] Regarding the automatic start-stop strategy of turbines, Document 1 "A method and system for automatic start-stop of power stations based on active power planning curve" (Application Publication No. CN 117318185 A), Document 2 "A method for automatic start-stop of AGC under load curve mode" (Application Publication No. CN115811099A), Document 3 "A method and system for automatic start-stop of AGC of giant hydropower station units" (Application Publication No. CN116880274A), Document 4 "A control system and method for hydropower station AGC under automatic mode" (Application Publication No. CN114243757A) all proposed automatic calculation of unit start-stop strategies based on planning curves. However, on the one hand, in the context of the application of spot market and auxiliary service market, these strategies have not considered their application scenarios, and have certain imperfections and safety risks, requiring manual calculation and intervention by the on-duty personnel. On the other hand, these strategies have not considered other influencing factors such as limited operating time and power generation efficiency. These factors are still calculated by the on-duty personnel and then manually intervened in the start-stop procedures.

[0007] Therefore, the automatic start and shutdown calculation that takes into account multiple factors such as the clearance of the ancillary service market, the restricted operating area time of the unit, and the limit on the number of units started is still a problem to be solved. Summary of the invention

[0008] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0009] To this end, the present invention proposes an automatic start and shutdown method based on power generation plan, auxiliary services and unit characteristics. Under the background of application in the spot market and ancillary service market, it can judge the start and shutdown needs by combining multiple factors such as real-time active power plan curve, frequency regulation and standby clearing status, restricted operating time, unit load limit, etc.

[0010] Another object of the present invention is to provide an automatic start and shutdown system based on power generation plan, auxiliary services and unit characteristics.

[0011] A third object of the present invention is to provide a computer device.

[0012] A fourth object of the present invention is to provide a non-transitory computer-readable storage medium.

[0013] To achieve the above object, the present invention provides an automatic startup and shutdown method based on power generation plan, auxiliary services and unit characteristics, comprising:

[0014] Obtain relevant data participating in automatic start and shutdown, and verify whether the conditions for automatic start and shutdown operation are met; wherein the relevant data at least includes active power planning curve and auxiliary service market clearing capacity; if so,

[0015] Calculate the necessary startup and shutdown according to the active power planning curve and the clearing capacity of the ancillary service market to obtain a calculation result;

[0016] According to the calculation results and based on the restricted operating areas of each unit, optimized start and stop calculations are performed to obtain optimized start and stop calculation results.

[0017] The automatic start-up and shutdown method based on power generation plan, auxiliary services and unit characteristics in the embodiment of the present invention may also have the following additional technical features:

[0018] In one embodiment of the present invention, obtaining relevant data involved in automatic start and stop, and verifying whether the conditions for automatic start and stop operation are met, includes:

[0019] S1100) Obtain the current unit status, the control status of the units participating in the automatic start and stop control and the control status of the units not participating in the automatic start and stop control, the active power plan curve, the frequency regulation market clearing capacity, the standby market clearing capacity, the operating area range and the restricted operating area range of each unit under the current water head, the currently set start priority and shutdown priority, and the minimum and maximum number of units that must be in the power generation state;

[0020] S1200) comparing the number of units in the current power generation state with the minimum number of units that must be in the power generation state, if it is less than the minimum start-up limit number, an alarm is triggered and the automatic start-up and shutdown program is exited;

[0021] S1300) Determine whether to perform automatic start and stop operations if the verification is incorrect or the automatic start and stop conditions are not met, trigger an alarm, and exit the automatic start and stop program.

[0022] In one embodiment of the present invention, the calculation result of necessary startup and shutdown is obtained according to the active power planning curve and the clearing capacity of the ancillary service market, including:

[0023] S2100) According to the operating area range of each unit under the current water head and the units participating in the automatic start-up and shutdown operation, the joint operation area P under different start-up combinations is calculated respectively. r , its joint operation area p r It is the sum of the load operating areas that can be provided under this combination.

[0024] S2200) Calculate the adjustment range based on the plan curve and ancillary services in the future T1 period according to the active power plan curve and the clearing capacity of the ancillary service market, and perform verification;

[0025] S2300) Calculate the necessity of starting and stopping the generator by combining the joint operation area of ​​different units in S2100 and the adjustment range based on the planning curve and auxiliary services in S2200.

[0026] In one embodiment of the present invention, S2300 includes:

[0027] S2310) calculating the feasibility of the current startup combination, and comparing the joint operation area under the current startup combination with the adjustment range based on the plan curve and ancillary services point by point in sequence;

[0028] S2311) If the joint operation area under the current startup combination can include all the adjustment ranges based on the plan curve and auxiliary services, the feasibility of the current startup combination is met, and the optimization startup and shutdown calculation is performed; if the joint operation area under the current startup combination cannot include all the adjustment ranges based on the plan curve and auxiliary services, the feasibility of the current startup combination is not met, and the startup necessity calculation is performed;

[0029] S2320) If the joint operation area under the current startup combination cannot include all the adjustment ranges based on the planned curve and auxiliary services, the feasibility of the current startup combination is not satisfied, and the startup necessity calculation is performed, and the first adjustment range that cannot be included in the joint operation area is recorded. The corresponding moment j; if the time interval between moment j and the current moment is less than the automatic start-stop reaction threshold, an alarm is issued and the automatic start-stop is exited;

[0030] S2321) Compare the current number of startups with the maximum and minimum number of startups: if the current number of startups is less than the maximum number of startups, all the shutdown units put into the automatic startup and shutdown calculation are included in the alternative plan of starting one unit; if the current number of startups is greater than the minimum number of startups, all the startup units put into the automatic startup and shutdown calculation are included in the alternative plan of stopping one unit; and the startup and shutdown alternative plan is obtained;

[0031] S2330) based on the calculation results of all the joint operation areas calculated in S2100, find out the joint operation areas corresponding to the start and stop alternative schemes obtained in S2323;

[0032] S2340) The joint operation area corresponding to each start and stop alternative scheme obtained in S2330 is The subsequent adjustment ranges are compared from front to back. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternatives corresponding to the joint operation area with the longest adjustment range period are screened out. If the joint operation areas corresponding to all the start and stop alternatives cannot be included Then an alarm is issued and the automatic start and stop operation is terminated;

[0033] S2350) The joint operation area corresponding to each start / stop alternative scheme selected in S2340 is The adjustment ranges before and after are compared from back to front. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternative schemes corresponding to the joint operation area with the longest adjustment range period are screened out; and the front adjustment range that can be included in the joint operation area corresponding to the screened start and stop alternative schemes is recorded. and its corresponding time t k ;

[0034] S2360) if the startup and shutdown alternatives screened out in S2350 include both startup alternatives and shutdown alternatives, excluding the startup alternative;

[0035] S2370) If all the startup alternatives obtained in S2360 are selected, the unit with the highest startup priority is selected as the selected startup plan, otherwise the unit with the highest shutdown priority is selected as the selected shutdown plan;

[0036] S2380) If S2370 obtains a startup solution, then at t k The unit will be automatically started or reminded in advance of the start-up time that must be reserved; after the start-up command is triggered, if the start-up fails and the start-up process is exited, the alarm will be triggered and the start-up command of the unit will be triggered again. If the start-up process continues, the alarm will be reset and the unit will continue to start until it is connected to the grid normally. If the second start-up still fails and the start-up process is exited, the alarm will be triggered and the automatic start-up and shutdown will be exited;

[0037] S2390) If the shutdown plan obtained in S2370 is a shutdown plan, then k Reactive power transfer between units begins at all times, and judgment is made after the reactive power of the selected shutdown unit is reduced to base load.

[0038] In one embodiment of the present invention, the S2390 includes:

[0039] S2391) assuming that the startup combination of the selected unit after shutdown is used as the current startup combination;

[0040] S2392) Compare the joint operation area corresponding to the current startup combination assumed in S2391 with the adjustment range of the array Q updated in real time. If both can be covered, the machine will automatically shut down or issue a reminder. Otherwise, the adjustment range of the first array Q that cannot be included in the joint operation area is recorded. and the time corresponding to j;

[0041] S2393) considering the startup combination assuming that the selected unit will not stop as the current startup combination;

[0042] S2394) The combined operation area and adjustment range [q j , q j ] for comparison. If it can be included, no automatic shutdown will be performed and the base load will be maintained to let the unit wait. Otherwise, the unit will still be shut down or a reminder will be issued.

[0043] In one embodiment of the present invention, the optimized start-stop operation result is obtained by performing optimized start-stop operation according to the calculation result and based on the restricted operation area of ​​each unit, including:

[0044] S3100) Compare the current start-stop combination with the minimum number of running units. If the current number of units started is greater than the minimum number of units started, optimize the start-stop calculation; otherwise, do not optimize the start-stop calculation;

[0045] S3200) If the current number of started units is greater than the minimum number of started units, all started units that are included in the automatic start-stop calculation are included in the alternative plan of stopping one unit;

[0046] S3300) Compare the joint operation area corresponding to the alternative scheme with the adjustment range of the array Q, and select the alternative schemes corresponding to the joint operation area that can be covered;

[0047] S3400) If no alternative solution can be screened out, the optimization start and shutdown process ends;

[0048] S3500) If multiple alternative plans are screened out, a plan is randomly selected as the shutdown plan according to the shutdown priority;

[0049] S3600) transfers reactive power between units and automatically shuts down or issues a shutdown reminder after the reactive power of the selected shutdown unit is reduced to base load.

[0050] To achieve the above object, the present invention provides an automatic start-stop system based on power generation plan, auxiliary services and unit characteristics, comprising:

[0051] The operating condition determination module is used to obtain relevant data participating in automatic start and shutdown, and verify whether the conditions for automatic start and shutdown operation are met; wherein the relevant data at least includes the active power planning curve and the auxiliary service market clearing capacity; if so,

[0052] A necessary start-up and shutdown calculation module is used to calculate the necessary start-up and shutdown according to the active power planning curve and the clearing capacity of the auxiliary service market to obtain a calculation result;

[0053] The optimized start-up and shutdown calculation module is used to perform optimized start-up and shutdown calculations according to the calculation results and based on the restricted operating areas of each unit to obtain optimized start-up and shutdown calculation results.

[0054] The method and system of the embodiment of the present invention can optimize the limited operating time and minimize the water consumption for power generation while meeting the requirements of active power planning, frequency regulation and standby clearing.

[0055] To achieve the above-mentioned purpose, the third aspect embodiment of the present application proposes a computer device, comprising: a processor and a memory; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the method described in the first aspect embodiment.

[0056] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present application proposes a non-temporary computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method described in the first aspect embodiment is implemented.

[0057] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0059] Figure 1 is a flow chart of an automatic start-up and shutdown method based on power generation plan, auxiliary services and unit characteristics according to an embodiment of the present invention;

[0060] Figure 2 is a logic diagram of an automatic start-stop method based on power generation plan, auxiliary services and unit characteristics according to an embodiment of the present invention;

[0061] Figure 3 is a flow chart of obtaining various parameters and input conditions according to an embodiment of the present invention;

[0062] Figure 4 is a necessary start-stop calculation flow chart according to an embodiment of the present invention;

[0063] Figure 5 is an optimized startup and shutdown calculation diagram according to an embodiment of the present invention;

[0064] Figure 6 is a structural diagram of an automatic start-stop system based on power generation plan, auxiliary services and unit characteristics according to an embodiment of the present invention;

[0065] Figure 7 It is a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0066] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0067] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0068] The following describes the automatic start and stop method, system, device and storage medium based on power generation plan, auxiliary services and unit characteristics proposed in accordance with embodiments of the present invention with reference to the accompanying drawings.

[0069] Figure 1 is a flow chart of an automatic start-stop method based on power generation plan, auxiliary services and unit characteristics according to an embodiment of the present invention, such as Figure 1 As shown, including:

[0070] S1000, obtaining relevant data participating in automatic start and shutdown, and verifying whether the conditions for automatic start and shutdown are met; wherein the relevant data at least includes active power planning curve and auxiliary service market clearing capacity; if yes,

[0071] S2000, calculates the necessary startup and shutdown based on the active power planning curve and the clearing capacity of the ancillary service market to obtain the calculation result;

[0072] S3000: Optimizing the start and stop calculations based on the calculation results and the restricted operating areas of each unit to obtain optimized start and stop calculation results.

[0073] Specifically, the overall logic diagram of the present invention is as follows: Figure 2 shown.

[0074] In one embodiment of the present invention, S1000, obtain relevant data involved in automatic start and stop, and check whether the conditions for automatic start and stop operation are met, such as Figure 3 As shown, including:

[0075] S1100) obtains the necessary data and parameters for automatic start and shutdown, S1200) verifies the number of units currently in power generation, and S1300) determines whether the conditions for automatic start and shutdown operations are met. When the conditions are met, all participating units use a cyclic operation method to determine whether to perform automatic start and shutdown.

[0076] Among them, S1100) obtains the necessary data and parameters for automatic start and stop, including:

[0077] S1110) Obtain the current unit status, including the startup status, shutdown status, and maintenance status. The unit that is executing the startup process to the grid-connected state is included in the startup state, and other states are included in the non-startup state. The unit that is put into LCU for maintenance or put into the loss of backup pressure is included in the maintenance state.

[0078] S1120) Obtain the control status of the units participating in the automatic start and stop control and the units not participating in the automatic start and stop control, including whether the start and stop conditions are met, and the status and load of the units not participating in the automatic start and stop control but connected to the grid.

[0079] S1130) Read the active power plan curve, generate the planned total active power setting value of the hydropower station point by point according to the time interval, and perform verification, as follows:

[0080] S1131) The planned total active power setting value of the hydropower station is within the normal physical range, that is, not higher than the sum of the rated capacities of all units and not lower than 0MW.

[0081] S1132) The planned total active power setting value of the hydropower station is within the artificial limit range, that is, not higher than the sum of the artificially set upper limits of each unit, and not lower than the sum of the artificially set lower limits.

[0082] S1133) The absolute value of the difference between the planned total active power setting values ​​of the hydropower station at two consecutive time points is not higher than the artificially set mutation threshold.

[0083] S1140) Obtain the frequency modulation market clearing capacity and standby market clearing, and perform correctness verification.

[0084] S1150) Obtain the operating area range and restricted operating area range of each unit under the current water head.

[0085] S1160) Obtain the set startup priority and shutdown priority, where multiple units can have the same priority.

[0086] S1170) Obtain the minimum and maximum number of units that must be in power generation state.

[0087] S1180) Determine whether the automatic start and stop conditions of the unit are met:

[0088] S1181) The automatic start and stop function of the whole plant is put into use;

[0089] S1182) The unit has no accidents;

[0090] S1183) The unit is not in maintenance state or other failure state;

[0091] S1184) The unit is not powered on or the unit is powered on and the single unit AGC is in operation;

[0092] S1190) When the above parameters are changed, the calculation should be restarted.

[0093] Among them, S1200) verifies the number of units currently in power generation state, as follows:

[0094] S1210) Take the number of units in the current power generation state as n0, and compare it with the minimum and maximum number of units that must be in the power generation state, as follows:

[0095] S1211) Compare the number of units n0 in the current power generation state with the maximum number of units that must be in the power generation state. If it is greater than the maximum start-up limit, an alarm is triggered and the automatic start-up and shutdown program is exited.

[0096] S1212) Compare the number of units n0 in the current power generation state with the minimum number of units that must be in the power generation state. If it is less than the minimum start-up limit, an alarm is triggered and the automatic start-up and shutdown program is exited.

[0097] Among them, S1300) determines that the conditions for automatic start and stop operation are met. When the conditions are met, all participating units use a cyclic operation method to determine whether to automatically start and stop, which specifically includes:

[0098] S1310) The automatic start and stop function of the hydropower station is put into use;

[0099] S1320) At least one unit is put into automatic start and stop operation;

[0100] S1330) The whole plant AGC is put into operation and all generator sets are put into single-unit AGC control;

[0101] S1340) After each operation is completed, a new operation is started immediately.

[0102] In one embodiment of the present invention, S2000, the necessary start and stop calculations are performed according to the active power planning curve and the ancillary service market clearing capacity to obtain a calculation result, such as Figure 4 As shown, specifically including:

[0103] S2100) Calculate the joint operation area P under different startup combinations according to the operation area range of each unit under the current water head and the units participating in the automatic startup and shutdown operation r , its joint operation area p r It is the sum of the load operation areas that can be provided under this combination. S2200) According to the active power plan curve, the frequency regulation market and the reserve market clearing capacity, calculate the adjustment range based on the plan curve and ancillary services in the future T1 period, and perform verification and S2300) Combined with the joint operation area of ​​different units in S2100 and the adjustment range based on the plan curve and ancillary services in S2200, calculate the necessity of starting and stopping.

[0104] Among them, S2100) calculates the joint operation area P under different startup combinations according to the operation area range of each unit under the current water head and the units participating in the automatic startup and shutdown operation. r , its joint operation area p r It is the sum of the load operation areas available under this combination, including:

[0105] S2110) Take the number of computer groups participating in automatic start and stop as m, and calculate the joint operation area under different start-up combinations when there are 1 computer, 2 computers, ..., and m computers respectively. Suppose in the m-computer group, the number of start-up computers is r, and the number of shutdown computers is mr. Then the number of start-up combinations is calculated by permutation and combination C r m , get C when the number of startups is r r m There are C starting combinations, then when the number of starting units is r, the corresponding joint operation areas under different starting combinations are r m kind.

[0106] S2120) When the operable area of ​​a certain machine changes, or when the units participating in the automatic start and stop operation change, the joint operation area is recalculated.

[0107] Among them, S2200) calculates the adjustment range based on the plan curve and ancillary services in the future T1 period according to the active power plan curve, the frequency regulation market, and the reserve market clearing capacity, and performs verification, specifically including:

[0108] S2210) With t1 as the interval, the active power plan curve and auxiliary service clearing results within the t1 period are sampled; u groups of data are formed, u=T1 / t1; the active power plan curve is obtained, and the latest frequency modulation bid capacity starts at 00:00, and with t as the interval, the full-day plan curve is divided into x periods, as follows:

[0109] S2211) combining the frequency modulation clearing result and the standby clearing result to obtain the upper and lower reserved capacities of the auxiliary service, and forming u pairs of data;

[0110] S2212) Add the upper reserved capacity of the auxiliary service to the active power plan to obtain the upper limit of the adjustment range, and subtract the lower reserved capacity of the auxiliary service from the active power plan to obtain the lower limit of the adjustment range, thereby forming u pairs of data;

[0111] S2213) Arrange the u pairs of data obtained in S2212 in chronological order to form an adjustment range Q based on the planning curve and auxiliary services, where Q is an array of 2 rows and u columns. is the upper limit of the adjustment range of the i-th pair of data at the corresponding moment, q i is the lower limit of the adjustment range of the i-th pair of data at the corresponding moment;

[0112] S2220) Take the result of S2210 and verify the feasibility of the adjustment range Q. If > The sum of the current upper limits of all units or the manually set upper limit, q i When the sum of the current lower limits of all units or the manually set lower limit is reached, an alarm is triggered and the automatic start and stop procedure is exited.

[0113] Among them, S2300) combines the joint operation area of ​​different units under S2100 and the adjustment range based on the planning curve and auxiliary services in S2200 to calculate the necessity of starting and stopping, including:

[0114] S2310) Calculate the feasibility of the current startup combination, as follows:

[0115] S2311) obtaining the joint operation area under the current startup combination based on the result of S2100;

[0116] S2312) comparing the joint operation area under the current startup combination with the adjustment range of the array Q point by point in sequence;

[0117] S2313) If the joint operation area under the current startup combination can include all adjustment ranges of the array Q, the feasibility of the current startup combination is met, and the optimization startup and shutdown calculation is performed;

[0118] S2314) If the joint operation area under the current startup combination cannot include all the adjustment ranges of array Q, the feasibility of the current startup combination is not satisfied, and the process goes to S2320 to calculate the startup necessity, and records the first adjustment range in array Q that cannot be included in the joint operation area. And the time corresponding to j, if the time interval between the time corresponding to j and the current time is less than the automatic start and stop reaction threshold, an alarm is issued and the automatic start and stop is exited.

[0119] S2320) compares the current number of booted devices with the maximum and minimum number of booted devices:

[0120] S2321) If the current number of units in operation is less than the maximum number of units in operation, all units in automatic start-up and shutdown calculation are included in the alternative plan of starting one unit;

[0121] S2322) If the current number of units on is greater than the minimum number of units on, all units on which automatic start and stop calculations are put into the alternative plan of stopping one unit;

[0122] S2323) Summarize the results of S2321 and S2322 to obtain the start-stop alternative plan.

[0123] S2330) based on the calculation results of all the joint operation areas calculated in S2100, find out the joint operation areas corresponding to the start and stop alternative schemes obtained in S2323;

[0124] S2340) The joint operation area corresponding to each start and stop alternative scheme obtained in S2330 is The subsequent adjustment ranges are compared from front to back. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternatives corresponding to the joint operation area with the longest adjustment range period are screened out. If the joint operation areas corresponding to all the start and stop alternatives cannot be included Then an alarm is issued and the automatic start and stop operation is terminated;

[0125] S2350) The joint operation area corresponding to each start / stop alternative scheme selected in S2340 is The adjustment ranges before and after are compared from back to front. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternative schemes corresponding to the joint operation area with the longest adjustment range period are screened out; and the front adjustment range that can be included in the joint operation area corresponding to the screened start and stop alternative schemes is recorded. and its corresponding time t k .

[0126] S2360) if the startup and shutdown alternatives screened out in S2350 include both startup alternatives and shutdown alternatives, excluding the startup alternative;

[0127] S2370) If all the startup alternatives obtained in S2360 are selected, the unit with the highest startup priority is selected as the selected startup plan, otherwise the unit with the highest shutdown priority is selected as the selected shutdown plan.

[0128] S2380) If S2370 obtains a startup solution, then at t k The system will automatically start the machine or send a reminder at a time that must be reserved in advance.

[0129] S2381) After the start-up command is triggered, if the start-up fails and the start-up process exits, the alarm is triggered and the start-up command of the unit is triggered again. If the start-up process continues, the alarm is reset and the unit continues to start until it is connected to the grid normally. If the second start-up still fails and the start-up process exits, the alarm is triggered and the automatic start and stop are exited.

[0130] S2390) If the shutdown plan obtained in S2370 is a shutdown plan, then k Reactive power transfer between units begins at any time, and judgment is made after the reactive power of the selected shutdown unit is reduced to base load:

[0131] S2391) considering the startup combination after the selected unit is shut down as the current startup combination;

[0132] S2392) Compare the joint operation area corresponding to the current startup combination assumed in S2391 with the adjustment range of the array Q updated in real time. If both can be covered, the machine will automatically shut down or issue a reminder. Otherwise, the adjustment range of the first array Q that cannot be included in the joint operation area is recorded. and the time corresponding to j;

[0133] S2393) considering the startup combination assuming that the selected unit will not stop as the current startup combination;

[0134] S2394) The combined operation area and adjustment range corresponding to the current startup combination assumed in S2393 are Make a comparison. If it can be included, do not automatically shut down and maintain the base load to let the unit wait. Otherwise, shut down or issue a reminder.

[0135] In one embodiment of the present invention, S3000, based on the calculation results and based on the restricted operating area of ​​each unit, an optimized start-stop operation is performed to obtain an optimized start-stop operation result, such as Figure 5 As shown, including:

[0136] S3100) Compare the current start-stop combination with the minimum number of running units. If the current number of units started is greater than the minimum number of units started, optimize the start-stop calculation; otherwise, do not optimize the start-stop calculation;

[0137] S3200) If the current number of started units is greater than the minimum number of started units, all started units that are included in the automatic start-stop calculation are included in the alternative plan of stopping one unit;

[0138] S3300) Compare the joint operation area corresponding to the alternative scheme with the adjustment range of the array Q, and select the alternative schemes corresponding to the joint operation area that can be covered;

[0139] S3400) If no alternative solution can be screened out, the optimization start and shutdown process ends;

[0140] S3500) If multiple alternative plans are screened out, a plan is randomly selected as the shutdown plan according to the shutdown priority;

[0141] S3600) transfers reactive power between units and automatically shuts down or issues a shutdown reminder after the reactive power of the selected shutdown unit is reduced to base load.

[0142] Further, S4000) loops through steps S1000, S2000, and S3000.

[0143] The following is a detailed description of the automatic start-up and shutdown method based on power generation plan, auxiliary services and unit characteristics of the present application, which is an explanation of the present invention rather than a limitation. Assuming that a hydropower plant consists of 6 units of 700MW, the 6 units used in the present invention are divided into operating areas under 4 water heads, where the operating areas of units 1-3 and 4-6 are different. Table 1 shows the unit operating areas, which are as follows:

[0144] Table 1

[0145]

[0146] In one embodiment of the present invention, S1000) determines various parameters and input conditions of the hydropower station involved in automatic start and shutdown, and verifies the rationality of the current operation mode. Step S1000 includes:

[0147] S1100) Obtain the necessary data and parameters for automatic start and stop, including:

[0148] S1110) Obtain the current unit status, including the startup state, shutdown state, and maintenance state. The units that are executing the startup process to the grid-connected state are listed in the startup state, and the other states are listed in the non-startup state. The units that are put into LCU for maintenance or put into the loss of backup pressure are listed in the maintenance state. Assume that units 1, 3, and 5 are in the power generation state, unit 2 is in the maintenance state, and units 4 and 6 are in the shutdown state.

[0149] S1120) Obtain the control status of the units participating in the automatic start and stop control and the units not participating in the automatic start and stop control, including whether the start and stop conditions are met, and the status and load of the units not participating in the automatic start and stop control but connected to the grid. In the embodiment of the present invention, units 1, 3, 4, 5, and 6 all participate in the automatic start and stop, and unit 2 does not participate.

[0150] S1130) Read the active power plan curve, generate the planned total active power setting value of the hydropower station point by point at time intervals, and perform verification; S1131) The planned total active power setting value of the hydropower station is within the normal physical range, that is, not higher than the sum of the rated capacities of all units and not lower than 0MW; S1132) The planned total active power setting value of the hydropower station is within the artificial restriction range, that is, not higher than the sum of the manually set upper limits of each unit and not lower than the sum of the manually set lower limits; S1133) The absolute value of the difference between the planned total active power setting values ​​of the hydropower station at two consecutive time points is not higher than the artificially set mutation threshold.

[0151] S1140) Obtain the frequency modulation market clearing capacity and standby market clearing, and perform correctness verification.

[0152] S1150) Obtain the operating area range and restricted operating area range of each unit under the current water head. The water head is 200m, and the specific data is shown in Table 1.

[0153] S1160) Obtain the set startup priority and shutdown priority, where multiple units can have the same priority. In the embodiment of the present invention, the shutdown priority of unit 1 is 1, units 3 and 5 are 2, the startup priority of unit 4 is 1, and unit 6 is 2.

[0154] S1170) Obtain the minimum and maximum number of units that must be in power generation. The maximum number of units in operation is 5, and the minimum number of units in operation is 2.

[0155] S1180) Determine whether the conditions for automatic start and shutdown of the unit are met: S1181) The automatic start and shutdown function of the whole plant is activated; S1182) There is no accident in the unit; S1183) The unit is not in maintenance state or other failure state; S1184) The unit is not in the started state or the unit is in the started state and the single unit AGC is activated; S1190) When the above parameters change, the calculation should be restarted.

[0156] S1200) Verify the number of units currently in power generation status, as follows:

[0157] S1210) Take the number of units in the current power generation state as n0, and compare it with the minimum and maximum number of units that must be in the power generation state, as follows: S1211) Compare the number of units in the current power generation state n0 with the maximum number of units that must be in the power generation state. If it is greater than the maximum start-up limit, an alarm is triggered and the automatic start-up and shutdown program is exited. S1212) Compare the number of units in the current power generation state n0 with the minimum number of units that must be in the power generation state. If it is less than the minimum start-up limit, an alarm is triggered and the automatic start-up and shutdown program is exited.

[0158] S1300) Determine the conditions for automatic start and shutdown operation. When the conditions are met, all participating units use a cyclic operation method to determine whether to automatically start and stop, specifically including: S1310) The automatic start and shutdown function of the hydropower station is put into operation; S1320) At least one unit is put into automatic start and shutdown operation; S1330) The AGC of the entire plant is put into operation and all generating units are put into single-machine AGC control; S1340) After each operation is completed, a new operation is started immediately.

[0159] In one embodiment of the present invention, S2000) performs necessary startup and shutdown calculation based on the active power planning curve and the auxiliary service clearing result, and step S2000 includes:

[0160] S2100) Calculate the joint operation area P under different startup combinations according to the operation area range of each unit under the current water head and the units participating in the automatic startup and shutdown operation r , including:

[0161] S2110) Take the number of computer groups participating in automatic start and stop as m, and calculate the joint operation area under different start-up combinations when there are 1 computer, 2 computers, ..., and m computers respectively. Suppose in the m-computer group, the number of start-up computers is r, and the number of shutdown computers is mr. Then the number of start-up combinations is calculated by permutation and combination C r m , get C when the number of startups is r r m There are C starting combinations, then when the number of starting units is r, the corresponding joint operation areas under different starting combinations are r m In the embodiment of the present invention, 5 machines are involved in automatic start and stop, with a total of 30 situations.

[0162] S2120) When the operable area of ​​a certain machine changes, or when the units participating in the automatic start and stop operation change, the joint operation area is recalculated.

[0163] S2200) According to the active power plan curve, the frequency regulation market and the reserve market clearing capacity, the adjustment range based on the plan curve and the auxiliary service in the future T1 period is calculated and verified. In the embodiment of the present invention, the current time is 01:30 and T1 is 60 minutes.

[0164] S2210) Take t1 as the interval, sample the active power plan curve and auxiliary service clearing results within the t1 period; form u groups of data, u = T1 / t1; obtain the active power plan curve, the latest frequency modulation bid capacity starts at 00:00, and take t as the interval, divide the full-day plan curve into x periods. In the embodiment of the present invention, t1 is 5 minutes, plus the current time, there are 13 groups of data, u groups of data are [2000; 2000; 2000; 2030; 2060; 2030; 2000; 1970; 1940; 1910; 1940; 1970; 2000], t is 5 minutes, and there are 144 periods in the whole day.

[0165] S2211) The frequency regulation clearing result and the standby clearing result are integrated to obtain the upper and lower reserved capacities of the auxiliary service, forming u pairs of data; in the embodiment of the present invention, the auxiliary service clears 100MW from 01:00 to 02:00, and clears 150MW from 02:00 to 03:00.

[0166] S2212) Add the upper reserved capacity for auxiliary services to the active power plan to obtain the upper limit of the adjustment range, and subtract the lower reserved capacity for auxiliary services from the active power plan to obtain the lower limit of the adjustment range, to form u pairs of data; in the embodiment of the present invention, the pairs of data are [1900,2100; 1900,2100; 1900,2100; 1930,2130; 1960,2160; 1930,2130; 1850,2150; 1820,2120; 1790,2090; 1760,2060; 1990,2090; 1820,2120; 1850,2150].

[0167] S2213) Arrange the u pairs of data obtained in S2212 in chronological order to form an adjustment range Q based on the planning curve and auxiliary services, where Q is an array of 2 rows and u columns. is the upper limit of the adjustment range of the i-th pair of data at the corresponding moment, q i is the lower limit of the adjustment range at the corresponding moment of the i-th pair of data; in the embodiment of the present invention, Q is [1900,2100; 1900,2100; 1900,2100; 1930,2130; 1960,2160; 1930,2130; 1850,2150; 1820,2120; 1790,2090; 1760,2060; 1990,2090; 1820,2120; 1850,2150].

[0168] S2220) Take the result of S2210 and verify the feasibility of the adjustment range Q. If > The sum of the current upper limits of all units or the manually set upper limit, q i When the sum of the current lower limits of all units or the manually set lower limit is reached, an alarm is triggered and the automatic start and stop procedure is exited.

[0169] S2300) Calculate the necessity of starting and stopping the generator by combining the joint operation area of ​​different units in S2100 and the adjustment range based on the planning curve and auxiliary services in S2200, including:

[0170] S2310) Calculate the feasibility of the current startup combination, as follows:

[0171] S2311) Based on the result of S2100, obtain the joint operation area under the current startup combination; in the embodiment of the present invention, the current joint operation area is [360, 2100].

[0172] S2312) comparing the joint operation area under the current startup combination with the adjustment range of the array Q point by point in sequence;

[0173] S2313) If the joint operation area under the current startup combination can include all adjustment ranges of array Q, the feasibility of the current startup combination is met, and the startup and shutdown calculations are optimized; in the embodiment of the present invention, the joint operation area under the current startup combination cannot include all adjustment ranges of array Q.

[0174] S2314) If the joint operation area under the current startup combination cannot include all the adjustment ranges of array Q, the feasibility of the current startup combination is not satisfied, and the process goes to S2320 to calculate the startup necessity, and records the first adjustment range in array Q that cannot be included in the joint operation area. and the time corresponding to j. If the time interval between the time corresponding to j and the current time is less than the automatic start-stop reaction threshold, an alarm is issued and the automatic start-stop is exited. In the embodiment of the present invention, the joint operation area under the current start-up combination cannot include all the adjustment ranges of the array Q. The first array adjustment range that cannot be included in the joint operation area is 01:45, and the adjustment range is [1930,2130].

[0175] S2320) Compare the current number of startups with the maximum and minimum number of startups: S2321) If the current number of startups is less than the maximum number of startups, all the shutdown units that are put into the automatic startup and shutdown calculation are included in the alternative plan of starting one unit; S2322) If the current number of startups is greater than the minimum number of startups, all the startup units that are put into the automatic startup and shutdown calculation are included in the alternative plan of stopping one unit; S2323) Summarize the results of S2321 and S2322 to obtain the startup and shutdown alternative plan. In the embodiment of the present invention, one unit can be started or one unit can be stopped as an alternative plan.

[0176] S2330) Based on the calculation results of all joint operation areas calculated in S2100, find out the joint operation areas corresponding to the start and stop alternative plans obtained in S2323; in this embodiment of the present invention, the joint operation area for starting one machine is [480,2800], and the joint operation area for stopping one machine is: stopping machine No. 1 or No. 3 is [240,440]∩[540,1400], and stopping machine No. 5 is [240,430]∩[530,1400].

[0177] S2340) The joint operation area corresponding to each start and stop alternative scheme obtained in S2330 is The subsequent adjustment ranges are compared from front to back. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternatives corresponding to the joint operation area with the longest adjustment range period are screened out. If the joint operation areas corresponding to all the start and stop alternatives cannot be included Then an alarm is issued and the automatic start and stop operation is terminated; in the embodiment of the present invention, after starting one machine, all adjustment ranges can be included and it is selected as an alternative plan, and there is no alternative plan for shutdown.

[0178] S2350) The joint operation area corresponding to each start / stop alternative scheme selected in S2340 is The adjustment ranges before and after are compared from back to front. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternative schemes corresponding to the joint operation area with the longest adjustment range period are screened out; and the front adjustment range that can be included in the joint operation area corresponding to the screened start and stop alternative schemes is recorded. and its corresponding time t k In the embodiment of the present invention, all adjustment ranges can be included after one machine is turned on.

[0179] S2360) If the startup and shutdown alternatives screened out in S2350 include both startup alternatives and shutdown alternatives, the startup alternative is excluded; in the embodiment of the present invention, there is only the startup alternative.

[0180] S2370) If all the startup alternatives obtained in S2360 are startup alternatives, the unit with the highest startup priority is selected as the selected startup alternative, otherwise the unit with the highest shutdown priority is selected as the selected shutdown alternative. In the embodiment of the present invention, there is only a startup alternative, and according to the startup and shutdown priorities, unit 4 is selected as the startup alternative.

[0181] S2380) If S2370 obtains a startup solution, then at t k In advance, the unit will be automatically started or a reminder will be issued after a certain amount of time has been reserved for the start-up. S2381) After the start-up command is triggered, if the start-up fails and the start-up process is exited, an alarm will be triggered and the start-up command of the unit will be triggered again. If the start-up process continues, the alarm will be reset and the unit will continue to start until it is connected to the grid normally. If the second start-up still fails and the start-up process is exited, an alarm will be triggered and the automatic start-up and shutdown will be exited. In the embodiment of the present invention, t k If the time is 10 minutes, the automatic start-stop program will automatically start or remind unit 4 at 01:35, and will issue a start command or alarm signal again according to the start situation.

[0182] S2390) If the shutdown plan obtained in S2370 is a shutdown plan, then k Reactive power transfer starts between the units at the moment, and a judgment is made after the reactive power of the selected shutdown unit is reduced to the base load: S2391) the startup combination after the selected unit is shut down is considered to be the current startup combination; S2392) the joint operation area corresponding to the current startup combination assumed by S2391 is compared with the adjustment range of the array Q updated in real time. If both can be covered, the unit will be automatically shut down or a reminder will be issued. Otherwise, the first adjustment range in the array Q that cannot be included in the joint operation area is recorded. and the time corresponding to j; S2393) assuming that the startup combination of the selected unit does not stop is considered as the current startup combination; S2394) the joint operation area and adjustment range corresponding to the current startup combination assumed in S2393 Make a comparison. If it can be included, do not automatically shut down and maintain the base load to let the unit wait. Otherwise, shut down or issue a reminder.

[0183] Taking S2390 as an example, in the embodiment of the present invention, other conditions remain unchanged, and the u group data in S2210 becomes [460; 460; 460; 430; 400; 400; 400; 430; 460; 490; 520; 490; 490], then S2340 will get stopping one machine as an alternative, and there is no alternative to starting one machine, and stopping machine No. 4 is selected as an alternative in S2360. However, according to S2390, since one machine needs to be started at 02:05, machine No. 4 will remain waiting with load and will not be shut down.

[0184] In one embodiment of the present invention, S3000) combines the calculation results of S2000 to perform optimized start-up and shutdown calculations, and the step S3000 includes:

[0185] S3100) Compare the current start-stop combination with the minimum number of running units. If the current number of units started is greater than the minimum number of units started, optimize the start-stop calculation, otherwise do not optimize the start-stop calculation. According to an embodiment of the present invention, after unit 4 is successfully connected to the grid, the optimization start-stop calculation will be entered.

[0186] S3200) If the current number of powered-on units is greater than the minimum number of powered-on units, all powered-on units that are put into automatic start-stop calculation will be included in the alternative plan of shutting down one unit; after the No. 4 unit is successfully connected to the grid, shutting down one of the No. 1, No. 3, No. 4, and No. 5 units will be used as an alternative plan.

[0187] S3300) Compare the joint operation area corresponding to the alternative plan with the adjustment range of the array Q, and select the alternative plans corresponding to the joint operation area that can cover both; in this embodiment of the present invention, at 02:10, stopping one machine can cover the array Q, and the shutdown will be selected.

[0188] S3400) If no alternative solution can be screened out, the optimization start and shutdown process ends;

[0189] S3500) If multiple alternative plans are screened out, one plan is arbitrarily selected as the shutdown plan according to the shutdown priority; in the embodiment of the present invention, the shutdown priority of unit 4 after being connected to the grid is 3, so stopping unit 1 is used as an alternative plan.

[0190] S3600) Reactive power is transferred between the units, and the selected unit to be shut down is automatically shut down or a shutdown reminder is issued after the reactive power of the unit to be shut down is reduced to the base load. In the embodiment of the present invention, after 02:10, the reactive power of unit 1 is reduced to the base load and the unit is automatically shut down or a shutdown reminder is issued.

[0191] S4000) loops through steps S1000, S2000, and S3000.

[0192] The automatic start-up and shutdown method based on power generation plan, auxiliary services and unit characteristics of the embodiment of the present invention, the algorithm for calculating the necessity of start-up and shutdown, is applicable to all water plants that start and shut down according to the plan curve, and can be combined with the real-time clearing of the auxiliary service market to perform start-up and shutdown combination analysis. Especially when the spot market is about to be put into operation and the active power plan curve will change at any time with the system demand, it can reduce the workload of the duty officer, reduce the risk of misoperation or missed operation, and further ensure the safe operation of the power grid. The present invention is based on the restricted operation area time of each unit, and calculates the priority combination of the start-up and shutdown with the least restricted operation time. It is applicable to all hydropower plants with restricted operation areas for all units. On the premise of meeting the active power plan curve and the clearing of the auxiliary service market, the algorithm can minimize the restricted operation time of the unit on the basis of ensuring the safe operation of the power grid power generation operation, ensure that the unit operates in the optimal operation area as much as possible, reduce the unit damage caused by the excessively long restricted operation area time, indirectly reduce the unit maintenance work, and extend the unit operation life.

[0193] In order to implement the above embodiment, Figure 6 As shown, this embodiment also provides an automatic start-stop system 10 based on power generation plan, auxiliary services and unit characteristics, including:

[0194] The operating condition determination module 100 is used to obtain relevant data participating in automatic start-up and shutdown, and to verify whether the conditions for automatic start-up and shutdown operation are met; wherein the relevant data at least includes the active power planning curve and the auxiliary service market clearing capacity; if so,

[0195] Necessary startup and shutdown calculation module 200, used to calculate necessary startup and shutdown according to active power planning curve and auxiliary service market clearing capacity to obtain calculation results;

[0196] The optimized start-up and shutdown calculation module 300 is used to perform optimized start-up and shutdown calculations according to the calculation results and based on the restricted operating areas of each unit to obtain optimized start-up and shutdown calculation results.

[0197] According to the automatic start-stop system based on power generation plan, auxiliary services and unit characteristics of the embodiment of the present invention, the algorithm for calculating the necessity of start-stop is applicable to all water plants that start and stop according to the plan curve, and can also be combined with the real-time clearing of the auxiliary service market to perform start-stop combination analysis. The present invention is based on the restricted operating area time of each unit, and calculates the algorithm of the priority combination of start-stop with the least restricted operating time. It is applicable to hydropower plants with restricted operating areas for all units. On the premise of meeting the active power plan curve and the clearing of the auxiliary service market, the restricted operating time of the unit is minimized to ensure that the unit operates in the optimal operating area as much as possible, and the damage to the unit caused by the excessively long restricted operating area time is reduced, which indirectly reduces the maintenance work of the unit and extends the operating life of the unit.

[0198] In order to implement the method of the above embodiment, the present invention also provides a computer device, such as Figure 7 As shown, the computer device 600 includes a memory 601 and a processor 602; wherein the processor 602 runs a program corresponding to the executable program code by reading the executable program code stored in the memory 601, so as to implement each step of the method described above.

[0199] In order to implement the above embodiments, the present application also proposes a non-temporary computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the above embodiments is implemented.

[0200] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0201] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. An automatic start-up and shutdown method based on power generation plan, auxiliary services and unit characteristics, characterized in that: include: Obtain relevant data participating in automatic start and shutdown, and verify whether the conditions for automatic start and shutdown operation are met; wherein the relevant data at least includes active power planning curve and auxiliary service market clearing capacity; if so, Calculate the necessary startup and shutdown according to the active power planning curve and the clearing capacity of the ancillary service market to obtain a calculation result; According to the calculation results and based on the restricted operating areas of each unit, optimized start and stop calculations are performed to obtain optimized start and stop calculation results.

2. The method according to claim 1, characterized in that: Obtain relevant data involved in automatic start and stop, and verify whether the conditions for automatic start and stop operation are met, including: S1100) Obtain the current unit status, the control status of the units participating in the automatic start and stop control and the control status of the units not participating in the automatic start and stop control, the active power plan curve, the frequency regulation market clearing capacity, the standby market clearing capacity, the operating area range and the restricted operating area range of each unit under the current water head, the currently set start priority and shutdown priority, and the minimum and maximum number of units that must be in the power generation state; S1200) comparing the number of units in the current power generation state with the minimum number of units that must be in the power generation state, if it is less than the minimum start-up limit number, an alarm is triggered and the automatic start-up and shutdown program is exited; S1300) Determine whether to perform automatic start and stop operations if the verification is incorrect or the automatic start and stop conditions are not met, trigger an alarm, and exit the automatic start and stop program.

3. The method according to claim 1, characterized in that The necessary start and stop calculations are performed according to the active power planning curve and the clearing capacity of the ancillary service market to obtain the calculation results, including: S2100) According to the operating area range of each unit under the current water head and the units participating in the automatic start-up and shutdown operation, the joint operation area P under different start-up combinations is calculated respectively. r , its joint operation area p r It is the sum of the load operating areas that can be provided under this combination. S2200) Calculate the adjustment range based on the plan curve and ancillary services in the future T1 period according to the active power plan curve and the clearing capacity of the ancillary service market, and perform verification; S2300) Calculate the necessity of starting and stopping the generator by combining the joint operation area of ​​different units in S2100 and the adjustment range based on the planning curve and auxiliary services in S2200.

4. The method according to claim 3, characterized in that S2300, including: S2310) calculating the feasibility of the current startup combination, and comparing the joint operation area under the current startup combination with the adjustment range based on the plan curve and ancillary services point by point in sequence; S2311) If the joint operation area under the current startup combination can include all the adjustment ranges based on the plan curve and auxiliary services, the feasibility of the current startup combination is met, and the optimization startup and shutdown calculation is performed; if the joint operation area under the current startup combination cannot include all the adjustment ranges based on the plan curve and auxiliary services, the feasibility of the current startup combination is not met, and the startup necessity calculation is performed; S2320) If the joint operation area under the current startup combination cannot include all the adjustment ranges based on the planned curve and auxiliary services, the feasibility of the current startup combination is not satisfied, and the startup necessity calculation is performed, and the first adjustment range that cannot be included in the joint operation area is recorded. The corresponding moment j; if the time interval between moment j and the current moment is less than the automatic start-stop reaction threshold, an alarm is issued and the automatic start-stop is exited; S2321) Compare the current number of startups with the maximum and minimum number of startups: if the current number of startups is less than the maximum number of startups, all the shutdown units put into the automatic startup and shutdown calculation are included in the alternative plan of starting one unit; if the current number of startups is greater than the minimum number of startups, all the startup units put into the automatic startup and shutdown calculation are included in the alternative plan of stopping one unit; and the startup and shutdown alternative plan is obtained; S2330) based on the calculation results of all the joint operation areas calculated in S2100, find out the joint operation areas corresponding to the start and stop alternative schemes obtained in S2323; S2340) The joint operation area corresponding to each start and stop alternative scheme obtained in S2330 is The subsequent adjustment ranges are compared from front to back. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternatives corresponding to the joint operation area with the longest adjustment range period are screened out. If the joint operation areas corresponding to all the start and stop alternatives cannot be included Then an alarm is issued and the automatic start and stop operation is terminated; S2350) The joint operation area corresponding to each start / stop alternative scheme selected in S2340 is The adjustment ranges before and after are compared from back to front. If there is an adjustment range that cannot be included, the comparison is interrupted, and the start and stop alternative schemes corresponding to the joint operation area with the longest adjustment range period are screened out; and the front adjustment range that can be included in the joint operation area corresponding to the screened start and stop alternative schemes is recorded. and its corresponding time t k ; S2360) if the startup and shutdown alternatives screened out in S2350 include both startup alternatives and shutdown alternatives, excluding the startup alternative; S2370) If all the startup alternatives obtained in S2360 are selected, the unit with the highest startup priority is selected as the selected startup plan, otherwise the unit with the highest shutdown priority is selected as the selected shutdown plan; S2380) If S2370 obtains a startup solution, then at t k The unit will be automatically started or reminded in advance of the start-up time that must be reserved; after the start-up command is triggered, if the start-up fails and the start-up process is exited, the alarm will be triggered and the start-up command of the unit will be triggered again. If the start-up process continues, the alarm will be reset and the unit will continue to start until it is connected to the grid normally. If the second start-up still fails and the start-up process is exited, the alarm will be triggered and the automatic start-up and shutdown will be exited; S2390) If the shutdown plan obtained in S2370 is a shutdown plan, then k Reactive power transfer between units begins at all times, and judgment is made after the reactive power of the selected shutdown unit is reduced to base load.

5. The method according to claim 4, characterized in that The S2390 includes: S2391) assuming that the startup combination of the selected unit after shutdown is used as the current startup combination; S2392) Compare the joint operation area corresponding to the current startup combination assumed in S2391 with the adjustment range of the array Q updated in real time. If both can be covered, the machine will automatically shut down or issue a reminder. Otherwise, the adjustment range of the first array Q that cannot be included in the joint operation area is recorded. and the time corresponding to j; S2393) considering the startup combination assuming that the selected unit will not stop as the current startup combination; S2394) The combined operation area and adjustment range corresponding to the current startup combination assumed in S2393 are Make a comparison. If it can be included, do not automatically shut down and maintain the base load to let the unit wait. Otherwise, shut down or issue a reminder.

6. The method according to claim 1, characterized in that According to the calculation results and based on the restricted operation area of ​​each unit, the optimized start-stop operation is performed to obtain the optimized start-stop operation result, including: S3100) Compare the current start-stop combination with the minimum number of running units. If the current number of units started is greater than the minimum number of units started, optimize the start-stop calculation; otherwise, do not optimize the start-stop calculation; S3200) If the current number of started units is greater than the minimum number of started units, all started units that are included in the automatic start-stop calculation are included in the alternative plan of stopping one unit; S3300) Compare the joint operation area corresponding to the alternative scheme with the adjustment range of the array Q, and select the alternative schemes corresponding to the joint operation area that can be covered; S3400) If no alternative solution can be screened out, the optimization start and shutdown process ends; S3500) If multiple alternative plans are screened out, a plan is randomly selected as the shutdown plan according to the shutdown priority; S3600) transfers reactive power between units and automatically shuts down or issues a shutdown reminder after the reactive power of the selected shutdown unit is reduced to base load.

7. An automatic start-stop system based on power generation plan, auxiliary services and unit characteristics, characterized in that: include: The operating condition determination module is used to obtain relevant data participating in automatic start and shutdown, and verify whether the conditions for automatic start and shutdown operation are met; wherein the relevant data at least includes the active power planning curve and the auxiliary service market clearing capacity; if so, A necessary start-up and shutdown calculation module is used to calculate the necessary start-up and shutdown according to the active power planning curve and the clearing capacity of the auxiliary service market to obtain a calculation result; The optimized start-up and shutdown calculation module is used to perform optimized start-up and shutdown calculations according to the calculation results and based on the restricted operating areas of each unit to obtain optimized start-up and shutdown calculation results.

8. A computer device, characterized in that: including a processor and a memory; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the automatic start and shutdown method based on power generation plan, auxiliary services and unit characteristics as described in any one of claims 1-6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, it implements the automatic start-up and shutdown method based on power generation plan, auxiliary services and unit characteristics as described in any one of claims 1-6.

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