Method and device for adjusting safe and stable operation strategy of energy storage power plant and computer equipment

Abstract

The invention relates to a safe and stable operation strategy adjustment method and device for an energy storage power plant, computer equipment, a storage medium and a computer program product. The method comprises the following steps: constructing a network model for the 500kV system of the energy storage power plant; the network model of the 500kV system of the energy storage power plant comprises switch knife switch group models corresponding to a plurality of switch knife switch groups; combining a plurality of operation models corresponding to the 500kV system of the energy storage power plant according to the states of the plurality of switch knife switch groups; different operation models are used for simulating different operation modes of the 500kV system of the energy storage power plant; and obtaining a safe operation strategy obtained after simulation calculation is carried out on each operation model, and adjusting an original starting condition of the safe operation strategy in an original safe and stable calculation program of the 500kV system of the energy storage power plant based on the safe operation strategy of each operation model to obtain a target safe and stable calculation program. By adopting the method, the safety and stability calculation accuracy of the energy storage power plant can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a method, device, computer equipment, storage medium and computer program product for adjusting a safe and stable operation strategy of an energy storage power plant. Background Art

[0002] The logic of the safety and stability calculation program in the computer monitoring system of the pumped-storage hydropower plant is: in the case of a one-way standby, the power plant's operating strategy is adjusted to "3G2P", that is, only the power generation conditions of 3 units or the pumping conditions of 2 units are operated at the same time, and the units exceeding the limit will be forced to shut down; when two-way standby occurs, all units in the plant are prohibited from starting, and the units that have been started will be forced to shut down. This adjustment is mainly determined based on the power grid flow, the safety and stability of the local power grid, and the transmission capacity and current of the oil-filled cable of the pumped-storage hydropower plant. However, due to a false signal, the monitoring system of the pumped-storage hydropower plant mistakenly believed that the 500kV outgoing line structure had changed, and the safety and stability calculation program was started, shutting down the units that were normally operating in the pumping condition, resulting in a large loss of active power in the power grid. It can be seen that the original safety and stability calculation program of the pumped-storage hydropower plant cannot effectively eliminate the interference caused by the equipment signal jitter. The calculation of the 500kV line network structure in the safety and stability calculation program is unreasonable, and the probability of calculation error is high. Therefore, the possibility of equipment malfunction is high, and it may also cause the units of the pumped-storage hydropower plant to shut down abnormally at the same time.

[0003] Therefore, there is a problem in the traditional technology that the safety and stability calculation of the pumped storage hydropower plant is not accurate enough. Summary of the invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for adjusting the safe and stable operation strategy of an energy-storage power plant, which can improve the accuracy of safe and stable calculations of the energy-storage power plant in response to the above-mentioned technical problems.

[0005] A method for adjusting a safe and stable operation strategy of an energy storage power plant, comprising:

[0006] Construct a network model for a 500kV system of an energy storage power plant; the network model of the 500kV system of an energy storage power plant includes switch group models corresponding to multiple switch groups;

[0007] According to the status of multiple switch groups, multiple operation models corresponding to the 500kV system of the energy storage power plant are combined; different operation models are used to simulate different operation modes of the 500kV system of the energy storage power plant;

[0008] The safe operation strategy obtained after simulating and calculating each operation model is obtained, and based on the safe operation strategy of each operation model, the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant are adjusted to obtain the target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of all units of the 500kV system of the energy-storage power plant to start when the target starting conditions are met; the anti-interference ability of the target starting condition for equipment signal jitter is greater than the anti-interference ability of the original starting condition for equipment signal jitter.

[0009] In one embodiment, a network model for a 500 kV system of an energy storage power plant is constructed, including:

[0010] Obtain the composition information of each switch group in the 500kV system of the energy storage power plant;

[0011] Based on the composition information of each switch group, a switch group model of each switch group is established respectively;

[0012] Based on the switch group model of each switch group, a network model of the 500kV system of the energy storage power plant is generated.

[0013] In one embodiment, obtaining a safe operation strategy obtained after simulating and calculating each operation model includes:

[0014] Obtain model security calculation rules for each running model;

[0015] According to the model safety calculation rules of each operation model, simulation calculation is performed on each operation model to obtain the safety operation strategy of each operation model.

[0016] In one embodiment, each operation model is simulated and calculated according to the model safety calculation rule of each operation model to obtain the safety operation strategy of each operation model, including:

[0017] The signal data set generated by any running model in the simulation process is received through the local controller; the signal data set includes the switch signal data set and the knife switch signal data set corresponding to each switch knife switch group in the simulation process of any running model;

[0018] Preprocessing the signal data set of any running model through the local controller to obtain a processed signal data set of any running model;

[0019] According to the model safety calculation rules of any operation model, the safety operation calculation is performed on the processed signal data set of any operation model to obtain the safety operation strategy corresponding to any operation model.

[0020] In one embodiment, receiving a signal data set generated by any running model during a simulation process through a local controller includes:

[0021] The switch status monitoring auxiliary node collects the signal data set generated by any operation model during the simulation process, and sends the signal data set to the switch on-site collection device;

[0022] The signal data set is sent to the local controller in the local control cabinet of the switch knife switch through the switch local acquisition device.

[0023] In one embodiment, the target start condition is that the first outgoing line isolation switch disappears and the opening signal of the first outgoing line isolation switch appears, or the closing signal of the second outgoing line isolation switch disappears and the opening signal of the second outgoing line isolation switch appears; the first outgoing line isolation switch and the second outgoing line isolation switch constitute two outgoing lines of the 500kV system of the energy storage power plant; the method also includes:

[0024] When the first outgoing line isolation switch is not detected and the opening signal of the first outgoing line isolation switch is detected, it is determined that the 500kV system of the energy storage power plant is in 500kV single-circuit outgoing line operation, and the safe operation strategy is started;

[0025] When the second outgoing line isolation switch is not detected and the opening signal of the second outgoing line isolation switch is detected, it is determined that the 500kV system of the energy storage power plant is in 500kV single-circuit outgoing line operation, and the safe operation strategy is started.

[0026] A safe and stable operation strategy adjustment device for an energy storage power plant, comprising:

[0027] A construction module is used to construct a network model for a 500kV system of an energy storage power plant; the network model of the 500kV system of an energy storage power plant includes switch group models corresponding to multiple switch groups;

[0028] The combination module is used to combine multiple operation models corresponding to the 500kV system of the energy storage power plant according to the states of multiple switch groups; different operation models are used to simulate different operation modes of the 500kV system of the energy storage power plant;

[0029] The adjustment module is used to obtain the safe operation strategy obtained after simulating and calculating each operation model, and based on the safe operation strategy of each operation model, adjust the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant to obtain the target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of the entire plant unit of the 500kV system of the energy-storage power plant to start when the target starting conditions are met; the anti-interference ability of the target starting condition for equipment signal jitter is greater than the anti-interference ability of the original starting condition for equipment signal jitter.

[0030] A computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0031] A computer-readable storage medium stores a computer program, which implements the steps of the above method when executed by a processor.

[0032] A computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0033] The above-mentioned safe and stable operation strategy adjustment method, device, computer equipment, storage medium and computer program product of the energy-storage power plant are achieved by constructing a network model for the 500kV system of the energy-storage power plant; the network model of the 500kV system of the energy-storage power plant includes switch knife group models corresponding to multiple switch knife groups; according to the states of the multiple switch knife groups, multiple operation models corresponding to the 500kV system of the energy-storage power plant are combined; different operation models are used to simulate different operation modes of the 500kV system of the energy-storage power plant; the safe operation strategy obtained after simulating and calculating each operation model, and based on the safe operation strategy of each operation model, the original starting conditions of the safe operation strategy in the original safe and stable calculation program of the 500kV system of the energy-storage power plant are simulated. Adjustments are made to obtain the target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of all units of the 500kV system of the energy-storage power plant to start when the target start-up conditions are met; the anti-interference ability of the target start-up conditions for equipment signal jitter is greater than the anti-interference ability of the original start-up conditions for equipment signal jitter; in this way, by simulating and calculating different operation models of the 500kV system of the energy-storage power plant, all possible operation modes of the 500kV system of the energy-storage power plant can be simulated, thereby accurately optimizing the original safety and stability calculation program, effectively avoiding the risk of equipment malfunction caused by equipment jitter signals, realizing accurate judgment of the start-up conditions of the safety operation strategy, and improving the accuracy of safety and stability calculations for the energy-storage power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 An application environment diagram of a method for adjusting a safe and stable operation strategy of an energy storage power plant in an embodiment;

[0036] Figure 2A schematic flow chart of a method for adjusting a safe and stable operation strategy of an energy storage power plant in one embodiment;

[0037] Figure 3 A schematic diagram of a network model of a 500kV system of an energy storage power plant in an embodiment;

[0038] Figure 4 A schematic diagram of a 3G2P policy startup logic optimization solution in one embodiment;

[0039] Figure 5 A schematic diagram of another 3G2P policy startup logic optimization solution in one embodiment;

[0040] Figure 6 A schematic flow chart of a method for adjusting a safe and stable operation strategy of an energy storage power plant in another embodiment;

[0041] Figure 7 It is a structural block diagram of a safe and stable operation strategy adjustment device for an energy storage power plant in one embodiment;

[0042] Figure 8 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] The safe and stable operation strategy adjustment method of the energy storage power plant provided in the embodiment of the present application can be applied to Figure 1In the application environment shown, the terminal 102 communicates with the server 104 through a network. The data storage system can store data that the server 104 needs to process. The data storage system can be integrated on the server 104, or placed on the cloud or other network servers. Server 104 constructs a network model for the 500kV system of the energy-storage power plant; the network model of the 500kV system of the energy-storage power plant includes switch group models corresponding to multiple switch groups; server 104 combines multiple operation models corresponding to the 500kV system of the energy-storage power plant according to the states of the multiple switch groups; different operation models are used to simulate different operation modes of the 500kV system of the energy-storage power plant; server 104 obtains the safe operation strategy obtained after simulating and calculating each operation model, and based on the safe operation strategy of each operation model, adjusts the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant to obtain a target safe and stable calculation program; the target safe and stable calculation program is used to control the safe operation strategy of the entire plant unit of the 500kV system of the energy-storage power plant to start when the target starting conditions are met; the anti-interference ability of the target starting condition for equipment signal jitter is greater than the anti-interference ability of the original starting condition for equipment signal jitter. The terminal 102 may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers.

[0045] In an exemplary embodiment, Figure 2 As shown, a method for adjusting the safe and stable operation strategy of an energy storage power plant is provided. Figure 1 The server 104 in the example is used as an example to illustrate the method, which includes the following steps S202 to S206. Among them:

[0046] Step S202, constructing a network model for a 500 kV system of an energy storage power plant; the network model of the 500 kV system of an energy storage power plant includes switch group models corresponding to a plurality of switch groups.

[0047] The network model of the 500kV system of the energy storage power plant may refer to a simulation model used to simulate the 500kV system of the energy storage power plant.

[0048] Each switch knife switch group may be composed of a switch and various related knife switches related to the switch.

[0049] The switch knife group model may refer to a simulation model used to simulate the switches and related knife switches in the switch knife group.

[0050] Optionally, the server constructs a network model for simulating a 500kV system of an energy storage power plant.

[0051] Step S204, combining multiple operation models corresponding to the 500kV system of the energy storage power plant according to the states of the multiple switch groups; different operation models are used to simulate different operation modes of the 500kV system of the energy storage power plant.

[0052] Among them, the state of the switch knife group can refer to the closed position, open position, abnormal position and other states of the switch knife group.

[0053] Among them, any operation model corresponds to the state of different switch groups in the 500kV system of the energy storage power plant. Therefore, different operation models can simulate different operation modes of the 500kV system of the energy storage power plant.

[0054] Optionally, refer to Figure 3 In the case where there are four switch groups in the 500kV system of the energy storage power plant, the four switch groups can be combined into multiple operation models according to the status. For example, the combination of 5001 / 5002 / 5003 switch groups and 5004 switch groups are turned off as the first operation model, and the combination of 5001 / 5002 / 5004 switch groups and 5003 switch groups are turned off as the second operation model.

[0055] Step S206, obtain the safe operation strategy obtained after simulating and calculating each operation model, and based on the safe operation strategy of each operation model, adjust the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant to obtain the target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of the entire plant unit of the 500kV system of the energy-storage power plant to start when the target starting conditions are met; the target starting condition has a greater anti-interference ability against equipment signal jitter than the original starting condition.

[0056] The safe operation strategy may refer to a strategy for ensuring the safe and stable operation of the 500kV system of the energy storage power plant.

[0057] Among them, the original safety and stability calculation program can be the original safety and stability calculation program, and its corresponding logic is: when one outgoing line is withdrawn, the operation strategy of the energy storage power plant is adjusted to "3G2P", that is, only the power generation conditions of 3 units or the pumping conditions of 2 units are allowed to operate simultaneously, and the units exceeding the limit will be forced to shut down; when two outgoing lines are withdrawn, all units in the plant are prohibited from starting, and the units that have been started will be forced to shut down.

[0058] The original startup condition may refer to the condition for triggering the startup of the safe operation strategy set in the original safe and stable calculation program.

[0059] The target safe and stable computing program may refer to a safe and stable computing program obtained by optimizing the original startup conditions in the original safe and stable computing program.

[0060] The target start-up condition may refer to the condition obtained by optimizing the condition for triggering the start-up of the safe operation strategy set in the original safe and stable calculation program.

[0061] Optionally, the server obtains the safe operation strategy obtained after simulating and calculating each operation model, and based on the safe operation strategy of each operation model, optimizes the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy storage power plant to obtain a target safety and stability calculation program. Compared with the original safety and stability calculation program, the target safety and stability calculation program reduces calculation errors caused by misleading equipment signals, and its anti-interference ability is greater than that of the original safety and stability calculation program.

[0062] In the above-mentioned method for adjusting the safe and stable operation strategy of the energy-storage power plant, a network model for the 500kV system of the energy-storage power plant is constructed; the network model of the 500kV system of the energy-storage power plant includes switch group models corresponding to multiple switch groups; according to the states of the multiple switch groups, multiple operation models corresponding to the 500kV system of the energy-storage power plant are combined; different operation models are used to simulate different operation modes of the 500kV system of the energy-storage power plant; the safe operation strategy obtained after simulating and calculating each operation model is obtained, and based on the safe operation strategy of each operation model, the original starting conditions of the safe operation strategy in the original safe and stable calculation program of the 500kV system of the energy-storage power plant are adjusted to obtain the target safe operation strategy. Stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of all units of the 500kV system of the energy-storage power plant to start when the target startup conditions are met; the target startup condition has a greater anti-interference ability against equipment signal jitter than the original startup condition; in this way, by simulating and calculating different operation models of the 500kV system of the energy-storage power plant, all possible operation modes of the 500kV system of the energy-storage power plant can be simulated, thereby accurately optimizing the original safety and stability calculation program, effectively avoiding the risk of equipment misoperation caused by equipment jitter signals, and realizing accurate judgment of the startup conditions of the safety operation strategy, thereby improving the accuracy of safety and stability calculations for the energy-storage power plant.

[0063] In an exemplary embodiment, a network model for a 500kV system of an energy-storage power plant is constructed, including: obtaining composition information of each switch group in the 500kV system of the energy-storage power plant; establishing a switch group model of each switch group based on the composition information of each switch group; and generating a network model of the 500kV system of the energy-storage power plant based on the switch group model of each switch group.

[0064] Among them, the composition information of the switch knife switch group may refer to the switches contained in the switch knife switch group and the knife switches related to the switches. For example, the switch knife switch group includes switch 5001, and related knife switches 50012, 40014, 50147, and 50127 related to switch 5001.

[0065] Alternatively, see Figure 3 , obtain the composition information of each switch group of the "angle" connection in the 500kV system of the energy storage power plant, Figure 3 Each group of switch knife switches in the "triangular" connection is modeled. Taking the 5001 switch and related knife switches as an example, the 5001 switch signal includes its closed position, open position, and abnormal position, and the related knife switch signals include closed position, open position, and abnormal position. The 5001 switch and related knife switches are formed into a switch knife switch group model and independently modeled. Then, based on the switch knife switch group model of each knife switch switch group, the network model of the 500kV system of the energy storage power plant is generated.

[0066] In this embodiment, the composition information of each switch group in the 500kV system of the energy-storage power plant is obtained; based on the composition information of each switch group, a switch group model of each switch group is established respectively; based on the switch group model of each switch group, a network model of the 500kV system of the energy-storage power plant is generated; in this way, an accurate network model of the 500kV system of the energy-storage power plant can be modeled.

[0067] In an exemplary embodiment, obtaining a safe operation strategy obtained after simulating and calculating each operation model includes: obtaining a model safety calculation rule for each operation model; simulating and calculating each operation model according to the model safety calculation rule for each operation model to obtain a safe operation strategy for each operation model.

[0068] Among them, the model safety calculation rules of each operating model are different. Since different operating models correspond to the states of different switch groups, the corresponding current flows are different. Therefore, the calculations for model safety are different. Each operating model has corresponding model safety calculation rules.

[0069] Optionally, the server obtains model security calculation rules for each operating model, and performs simulation calculations on each operating model according to the model security calculation rules for each operating model, so as to calculate safe operating strategies under different operating models.

[0070] In this embodiment, the model safety calculation rules of each operating model are obtained; each operating model is simulated and calculated according to the model safety calculation rules of each operating model to obtain the safe operation strategy of each operating model; in this way, each operating model can be simulated and calculated based on the model safety calculation rules of different operating models to simulate all possible operating modes of the 500kV system of the energy storage power plant, which is beneficial to verify the optimization effect of the target safety and stability calculation program, thereby determining the effective avoidance of the risk of equipment malfunction caused by equipment jitter interference and making an accurate judgment on the start of the safe operation strategy.

[0071] In an exemplary embodiment, each operating model is simulated and calculated according to the model safety calculation rules of each operating model to obtain a safe operation strategy for each operating model, including: receiving a signal data set generated by any operating model during the simulation process through an on-site controller; the signal data set includes a switch signal data set and a knife switch signal data set corresponding to each switch knife switch group during the simulation process of any operating model; pre-processing the signal data set of any operating model through the on-site controller to obtain a processed signal data set of any operating model; performing safe operation calculation on the processed signal data set of any operating model according to the model safety calculation rules of any operating model to obtain a safe operation strategy corresponding to any operating model.

[0072] Among them, the signal data set generated by any running model during the simulation process may be the switch signal data and knife switch signal data in each switch knife switch group under the running model. For example, the switch signal data may be the 5001 switch signal, including the closing position signal, the opening position signal, and the abnormal position signal of the 5001 switch. The knife switch signal data may be the knife switch signal related to the 5001 switch, including the 5001 related knife switch signal including the closing position signal, the opening position signal, and the abnormal position signal of the related knife switch signal.

[0073] Optionally, the server receives the switch signal data set and the knife switch signal data set corresponding to each switch knife switch group of any operating model during the simulation process through the local controller, and then performs anti-shake, filtering, inversion, delay and other operations on the switch signal data set and the knife switch signal data set of any operating model through the local controller to obtain the processed signal data set of any operating model, and then performs safe operation calculation on the processed signal data set of any operating model according to the model safety calculation rules of any operating model to obtain the safe operation strategy corresponding to any operating model.

[0074] In this embodiment, a signal data set generated by any operating model during the simulation process is received by an on-site controller; the signal data set includes a switch signal data set and a knife switch signal data set corresponding to each switch knife switch group during the simulation process of any operating model; the signal data set of any operating model is preprocessed by the on-site controller to obtain a processed signal data set of any operating model; according to the model safety calculation rules of any operating model, a safe operation calculation is performed on the processed signal data set of any operating model to obtain a safe operation strategy corresponding to any operating model; in this way, the signal data set under any operating model can be calculated in real time, thereby accurately and quickly determining the safe operation strategy of any operating model.

[0075] In an exemplary embodiment, a signal data set generated by any operating model during the simulation process is received by an on-site controller, including: collecting the signal data set generated by any operating model during the simulation process through a switch status monitoring auxiliary node, and sending the signal data set to the switch on-site collection device; sending the signal data set to the on-site controller in the switch knife switch on-site control cabinet through the switch on-site collection device.

[0076] The switch status monitoring auxiliary node may be a node set in a network model of a 500 kV system of an energy storage power plant for monitoring switch group signals.

[0077] Among them, the switch on-site data collection device can be a data collection device located near the switch and used to collect switch knife switch group signals.

[0078] Among them, the on-site control cabinet for the knife switch can be a control cabinet located near the knife switch.

[0079] The local controller may be a local control unit LCU (Local Control Unit).

[0080] Optionally, the switch signal data set and the knife switch signal data set generated by any running model during the simulation process are collected through the switch status monitoring auxiliary node, and the switch signal data set and the knife switch signal data set are sent to the switch local collection device, and then the switch signal data set and the knife switch signal data set are sent to the local controller in the switch knife switch local control cabinet through the switch local collection device. When the local controller receives the switch signal data set and the knife switch signal data set, it performs anti-shake, filtering, inversion, delay and other operations on the switch signal data set and the knife switch signal data set.

[0081] In this embodiment, the signal data set generated by any operating model during the simulation process is collected through the switch status monitoring auxiliary node, and the signal data set is sent to the switch on-site collection device; the signal data set is sent to the on-site controller in the switch knife switch on-site control cabinet through the switch on-site collection device; in this way, real-time collection of the switch signal data set and the knife switch signal data set can be realized.

[0082] In an exemplary embodiment, the target start condition is that the first outgoing line isolation switch disappears and the opening signal of the first outgoing line isolation switch appears, or the closing signal of the second outgoing line isolation switch disappears and the opening signal of the second outgoing line isolation switch appears; the first outgoing line isolation switch and the second outgoing line isolation switch constitute two outgoing lines of the 500kV system of the energy storage power plant; the method also includes: when the first outgoing line isolation switch is not detected and the opening signal of the first outgoing line isolation switch is detected, determining that the 500kV system of the energy storage power plant is a 500kV single-circuit outgoing line operation, and starting a safe operation strategy; when the second outgoing line isolation switch is not detected and the opening signal of the second outgoing line isolation switch is detected, determining that the 500kV system of the energy storage power plant is a 500kV single-circuit outgoing line operation, and starting a safe operation strategy.

[0083] In actual applications, the 500kV system of the energy storage power plant includes two outgoing lines, each of which has a corresponding isolation switch, namely the first outgoing line isolation switch and the second outgoing line isolation switch.

[0084] Optionally, when the first outgoing line isolation switch is not detected and the opening signal of the first outgoing line isolation switch is detected, the server determines that the 500kV system of the energy storage power plant is operating as a 500kV single-circuit outgoing line and starts the safety operation strategy. Alternatively, when the second outgoing line isolation switch is not detected and the opening signal of the second outgoing line isolation switch is detected, the server determines that the 500kV system of the energy storage power plant is operating as a 500kV single-circuit outgoing line and starts the safety operation strategy.

[0085] In the present embodiment, when the first outgoing line isolating switch is not detected and the opening signal of the first outgoing line isolating switch is detected, it is determined that the 500kV system of the energy-storage power plant is in 500kV single-circuit outgoing line operation, and the safe operation strategy is started; when the second outgoing line isolating switch is not detected and the opening signal of the second outgoing line isolating switch is detected, it is determined that the 500kV system of the energy-storage power plant is in 500kV single-circuit outgoing line operation, and the safe operation strategy is started; in this way, when the closing signal of the first outgoing line isolating switch or the second outgoing line isolating switch disappears and the opening signal of the switch is received, it can be determined that the outgoing line is in 500kV single-circuit outgoing line operation, and the safe operation strategy is started at the same time, which greatly reduces the calculation errors caused by the malfunction of the equipment signal and ensures the stability of the power plant operation.

[0086] The target safety and stability calculation program of the present application has the following advantages: (1) The opening signal and closing signal of the isolation knife switch are used as calculation conditions at the same time. Through the combined calculation of the signal state, on the one hand, the reliability and accuracy of the calculation are guaranteed, and on the other hand, the calculation errors caused by signal malfunction are greatly reduced, thereby ensuring the stability of the power plant operation; (2) The logic of the target safety and stability calculation program has been fully verified in the computer simulation system of the energy storage power plant before application. The safe and stable operation strategy adjustment method of the energy storage power plant in each embodiment of the present application is adopted to verify the accuracy and reliability of this judgment logic by simulating all possible operation modes of the 500kV system. Reliability. Various tests have fully proved that this logic can effectively avoid the risk of false operation caused by equipment jitter interference and can make correct judgments on the "3G2P" operation strategy; (3) The logic in the target safety and stability calculation program is an analysis and summary of the operating data of the energy-storage power plant for many years, and then the judgment logic suitable for the characteristics of the energy-storage power plant itself is determined after experiments. It has strong practicality and high application value; (4) By modifying the relevant programs in the monitoring system, only the software part needs to be modified, avoiding the risk of false operation of the 500kV protection equipment caused by changing the hardware circuit; (5) By writing the upper computer program, the major hidden dangers that seriously threaten the safe and stable operation of the power grid are solved.

[0087] The following provides the implementation content of the optimization project to optimize the original safe and stable operation procedures in the monitoring system of the energy storage power plant, including:

[0088] Step 1: Analyze the original safe and stable operation program of the monitoring system of the energy storage power plant. In the two outgoing lines of the 500kV system, there are three grounding switches and two isolation switches. Taking the first outgoing line as an example, the three grounding switches are 52617, 52627, and 52637, and the two isolating switches are 5026A and 5026B. When the opening signal of any grounding switch disappears or the closing signal of any isolating switch disappears, the judgment standard of the "3G2P" operation strategy will judge that the first outgoing line is out of operation. The 500kV network structure is a single outgoing line. It can be seen that if the opening signal of any of the three grounding switches or the closing signal of any of the two isolating switches jitters, the "3G2P" operation strategy will be activated, which may force the unit to shut down and cause grid load loss. If one of the switch signals of the two outgoing lines jitters, the safety and stability calculation will obtain the control strategy of the two outgoing lines of the 500kV network to shut down and all the energy storage power plant units to shut down, which has extremely serious consequences. Therefore, the judgment standard in the original safe and stable operation program cannot effectively filter out the interference caused by equipment jitter, and cannot accurately judge the 500kV network structure.

[0089] Step 2: Based on the defects in the judgment criteria in the original safe and stable operation procedure and combined with the actual operation data of the energy-storage power plant, two sets of plans are formulated for the 500kV system of the energy-storage power plant.

[0090] Solution 1: Taking the first round of outbound as an example, Figure 4 As shown, the judgment is made through the combination of the closing and opening signals of the isolation switch 5026A and the grounding switch 52617. The specific logic is: the disappearance of the closing signal of 5026A and the simultaneous appearance of the opening signal are used as the criterion for the opening of 5026A; the disappearance of the opening signal of 52617 and the simultaneous appearance of the closing signal are used as the criterion for the closing of 52617; when the monitoring system receives the opening signal of 5026A or the closing signal of 52617, it is considered that the first outgoing line has exited operation, that is, the "3G2P" operation strategy is started.

[0091] Option 2: If Figure 5 As shown, the first outgoing line isolation switch 5026A and the second outgoing line isolation switch 5046A are used as the conditions for starting the "3G2P" operation strategy. When the closing signal of any of the two isolation switches 5026A or 5046A disappears and the opening signal of the switch is received at the same time, the monitoring system determines that it is 500kV single-circuit outgoing line operation and starts the "3G2P" operation strategy.

[0092] Step 3: Repeatedly deliberate, analyze and compare the above two solutions to determine the final judgment logic: Since there will be no situation where the line is energized and the grounding switch is closed under any circumstances such as line maintenance, that is, 52617 must be closed after 5026A is opened, or 54617 must be closed after 5046A is opened. It can be seen from this that: first, from the perspective of preventing equipment from refusing to operate, when the grounding switch 52617 in Solution 1 operates, as long as the equipment is normal, 5026A must have operated at this time. Therefore, the addition of 52617 cannot further prevent the "3G2P" operation strategy from refusing to operate; second, from the perspective of preventing equipment from malfunctioning, if the operation of the grounding switch 52617 is included in the judgment logic in Solution 1, the malfunction of 52617 may also cause the malfunction of the "3G2P" operation strategy to start erroneously, increasing the possibility of equipment malfunctioning. Comprehensive evaluation shows that the judgment logic listed in Solution 2 is the best.

[0093] Step 4: Implementation of the scheme, specifically refer to the methods of each embodiment of this application. This scheme is verified in the existing computer simulation debugging system of the energy storage power plant, simulating all possible operating modes of the 500kV two-circuit outgoing line and various failure modes, which fully proves that this optimization scheme can effectively avoid the risk of equipment malfunction caused by equipment jitter interference, and can correctly judge the "3G2P" operation strategy; modify the relevant judgment logic in the upper computer to apply it in practice.

[0094] In another embodiment, Figure 6 As shown, a method for adjusting the safe and stable operation strategy of an energy storage power plant is provided. Figure 1 Taking the server 104 in the example as an example, the following steps are included:

[0095] Step S602, obtaining the composition information of each switch group in the 500kV system of the energy storage power plant.

[0096] Step S604: Based on the composition information of each switch group, a switch group model of each switch group is established.

[0097] Step S606, generating a network model of a 500kV system of an energy storage power plant based on the switch group models of each switch group; the network model of the 500kV system of an energy storage power plant includes switch group models corresponding to multiple switch groups.

[0098] Step S608, combining multiple operation models corresponding to the 500kV system of the energy storage power plant according to the states of the multiple switch groups; different operation models are used to simulate different operation modes of the 500kV system of the energy storage power plant.

[0099] Step S610, obtain the safe operation strategy obtained after simulating and calculating each of the operating models, and based on the safe operation strategy of each of the operating models, adjust the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy storage power plant to obtain a target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of the entire plant unit of the 500kV system of the energy storage power plant to start under the target starting conditions; the target starting condition has a greater anti-interference ability against equipment signal jitter than the original starting condition has a greater anti-interference ability against equipment signal jitter.

[0100] It should be noted that the specific limitations of the above steps can refer to the specific limitations of a method for adjusting a safe and stable operation strategy of an energy storage power plant described above.

[0101] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0102] Based on the same inventive concept, the embodiment of the present application also provides a device for adjusting the safe and stable operation strategy of an energy storage power plant for implementing the method for adjusting the safe and stable operation strategy of an energy storage power plant involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the device for adjusting the safe and stable operation strategy of one or more energy storage power plants provided below can refer to the limitations of the method for adjusting the safe and stable operation strategy of an energy storage power plant above, and will not be repeated here.

[0103] In an exemplary embodiment, Figure 7 As shown, a device for adjusting the safe and stable operation strategy of an energy storage power plant is provided, comprising: a construction module 702, a combination module 704 and an adjustment module 706, wherein:

[0104] A construction module 702 is used to construct a network model for a 500 kV system of an energy storage power plant; the network model of the 500 kV system of an energy storage power plant includes switch group models corresponding to a plurality of switch groups;

[0105] The combination module 704 is used to combine multiple operation models corresponding to the 500kV system of the energy storage power plant according to the states of the multiple switch groups; different operation models are used to simulate different operation modes of the 500kV system of the energy storage power plant;

[0106] Adjustment module 706 is used to obtain the safe operation strategy obtained after simulating and calculating each operation model, and based on the safe operation strategy of each operation model, adjust the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant to obtain a target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of the entire plant unit of the 500kV system of the energy-storage power plant to start when the target starting conditions are met; the target starting condition has a greater anti-interference ability against equipment signal jitter than the original starting condition.

[0107] In an exemplary embodiment, construction module 702 is specifically used to obtain composition information of each switch group in a 500kV system of an energy-storage power plant; based on the composition information of each switch group, a switch group model of each switch group is established; based on the switch group model of each switch group, a network model of the 500kV system of the energy-storage power plant is generated.

[0108] In an exemplary embodiment, the adjustment module 706 is specifically used to obtain the model safety calculation rules of each operating model; according to the model safety calculation rules of each operating model, each operating model is simulated and calculated to obtain the safe operation strategy of each operating model.

[0109] In an exemplary embodiment, the adjustment module 706 is specifically used to receive a signal data set generated by any operating model during a simulation process through an on-site controller; the signal data set includes a switch signal data set and a knife switch signal data set corresponding to each switch knife switch group during the simulation process of any operating model; the signal data set of any operating model is preprocessed through the on-site controller to obtain a processed signal data set of any operating model; according to the model safety calculation rules of any operating model, a safe operation calculation is performed on the processed signal data set of any operating model to obtain a safe operation strategy corresponding to any operating model.

[0110] In an exemplary embodiment, the adjustment module 706 is specifically used to collect the signal data set generated by any operating model during the simulation process through the switch status monitoring auxiliary node, and send the signal data set to the switch on-site collection device; send the signal data set to the on-site controller in the switch knife switch on-site control cabinet through the switch on-site collection device.

[0111] In an exemplary embodiment, the target start condition is that the first outgoing line isolation switch disappears and the opening signal of the first outgoing line isolation switch appears, or the closing signal of the second outgoing line isolation switch disappears and the opening signal of the second outgoing line isolation switch appears; the first outgoing line isolation switch and the second outgoing line isolation switch constitute two outgoing lines of the 500kV system of the energy storage power plant; the device also includes: a detection module, which is used to determine that the 500kV system of the energy storage power plant is a 500kV single-circuit outgoing line operation and start a safe operation strategy when the first outgoing line isolation switch is not detected and the opening signal of the first outgoing line isolation switch is detected; when the second outgoing line isolation switch is not detected and the opening signal of the second outgoing line isolation switch is detected, it is determined that the 500kV system of the energy storage power plant is a 500kV single-circuit outgoing line operation and start a safe operation strategy.

[0112] Each module in the above-mentioned safe and stable operation strategy adjustment device of the energy storage power plant can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0113] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 8 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store safe and stable operation strategy adjustment data of the energy storage power plant. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a safe and stable operation strategy adjustment method for an energy storage power plant is implemented.

[0114] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0115] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant. The steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant here may be the steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant in each of the above embodiments.

[0116] In one embodiment, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, the processor executes the steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant. The steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant here can be the steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant in each of the above embodiments.

[0117] In one embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the processor executes the steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant. The steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant here may be the steps of the method for adjusting the safe and stable operation strategy of an energy storage power plant in each of the above embodiments.

[0118] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0119] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for adjusting the safe and stable operation strategy of an energy storage power plant, characterized in that: The method comprises: Constructing a network model for a 500kV system of an energy storage power plant; the network model of the 500kV system of the energy storage power plant includes switch group models corresponding to a plurality of switch groups; According to the states of the multiple switch groups, multiple operation models corresponding to the 500kV system of the energy storage power plant are combined; different operation models are used to simulate different operation modes of the 500kV system of the energy storage power plant; The safe operation strategy obtained after simulating and calculating each of the operation models is obtained, and based on the safe operation strategy of each of the operation models, the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant are adjusted to obtain a target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of all the units of the 500kV system of the energy-storage power plant to start when the target starting conditions are met; the anti-interference ability of the target starting condition for equipment signal jitter is greater than the anti-interference ability of the original starting condition for the equipment signal jitter.

2. The method according to claim 1, characterized in that: The network model for the 500kV system of the energy storage power plant is constructed, including: Obtaining the composition information of each switch group in the 500kV system of the energy storage power plant; Based on the composition information of each switch group, a switch group model of each switch group is established respectively; Based on the switch group models of each of the switch groups, a network model of the 500kV system of the energy storage power plant is generated.

3. The method according to claim 1, characterized in that The obtaining of the safe operation strategy obtained after simulating and calculating each of the operation models includes: Obtaining model security calculation rules for each of the running models; According to the model safety calculation rules of each operation model, simulation calculation is performed on each operation model to obtain the safety operation strategy of each operation model.

4. The method according to claim 3, characterized in that The performing simulation calculation on each of the operation models according to the model safety calculation rules of each of the operation models to obtain the safety operation strategy of each of the operation models includes: Receive a signal data set generated by any of the operating models during the simulation process through a local controller; the signal data set includes a switch signal data set and a knife switch signal data set corresponding to each of the switch knife switch groups during the simulation process of any of the operating models; Preprocessing the signal data set of any of the operating models through the on-site controller to obtain a processed signal data set of any of the operating models; According to the model safety calculation rules of any of the operation models, a safety operation calculation is performed on the processed signal data set of any of the operation models to obtain a safety operation strategy corresponding to any of the operation models.

5. The method according to claim 4, characterized in that The receiving, by means of a local controller, a signal data set generated by any one of the operating models during the simulation process comprises: Collecting a signal data set generated by any of the operation models during the simulation process through a switch state monitoring auxiliary node, and sending the signal data set to a switch on-site collection device; The signal data set is sent to the local controller in the local control cabinet of the switch knife switch through the local switch acquisition device.

6. The method according to claim 1, characterized in that The target start condition is that the first outgoing line isolation switch disappears and the opening signal of the first outgoing line isolation switch appears, or the closing signal of the second outgoing line isolation switch disappears and the opening signal of the second outgoing line isolation switch appears; the first outgoing line isolation switch and the second outgoing line isolation switch constitute two outgoing lines of the 500kV system of the energy storage power plant; the method also includes: In the case where the first outgoing line isolation switch is not detected and the opening signal of the first outgoing line isolation switch is detected, determining that the 500 kV system of the energy storage power plant is in 500 kV single-circuit outgoing line operation, and starting the safety operation strategy; When the second outgoing line isolating switch is not detected and the opening signal of the second outgoing line isolating switch is detected, it is determined that the 500kV system of the energy storage power plant is in 500kV single-circuit outgoing line operation, and the safe operation strategy is started.

7. A safe and stable operation strategy adjustment device for an energy storage power plant, characterized in that: The device comprises: A construction module is used to construct a network model for a 500kV system of an energy storage power plant; the network model of the 500kV system of the energy storage power plant includes switch group models corresponding to a plurality of switch groups; A combination module, used for combining a plurality of operation models corresponding to the 500kV system of the energy storage power plant according to the states of the plurality of switch groups; different operation models are used for simulating different operation modes of the 500kV system of the energy storage power plant; An adjustment module is used to obtain a safe operation strategy obtained after simulating and calculating each of the operating models, and based on the safe operation strategy of each of the operating models, adjust the original starting conditions of the safe operation strategy in the original safety and stability calculation program of the 500kV system of the energy-storage power plant to obtain a target safety and stability calculation program; the target safety and stability calculation program is used to control the safe operation strategy of all the units of the 500kV system of the energy-storage power plant to start under the target starting conditions; the anti-interference ability of the target starting conditions for equipment signal jitter is greater than the anti-interference ability of the original starting conditions for the equipment signal jitter.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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