Pumped storage unit control method and device based on real-time strategy verification for electric power spot market and computer equipment

Abstract

The invention relates to a real-time strategy verification-based pumped storage unit control method and device for an electric power spot market and computer equipment. The method comprises the following steps: acquiring authority information and mode information of the pumped storage unit; the authority information is used for representing a control main body to which the control authority of the pumped storage unit belongs, and the control main body comprises a power dispatching center or a pumped storage power station; under the condition that a unit control instruction sent by the power dispatching center is received, the unit control instruction is verified according to the authority information, the mode information and instruction information of the unit control instruction; under the condition that the unit start-stop control instruction passes the verification, performing start-stop control on the pumped storage unit according to the unit start-stop control instruction; and under the condition that the unit load adjusting instruction passes the verification, carrying out load adjusting control on the pumped storage unit according to the unit load adjusting instruction. By adopting the method, the control safety and real-time performance of the pumped storage unit in the electric power spot market can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart grid, in particular to a control method and device of pumped storage unit based on real-time strategy verification for power spot market, computer equipment, computer readable storage medium and computer program product. BACKGROUND

[0002] With the gradual transformation of energy structure, pumped storage power station as the core regulation carrier of new power system presents the development of scale. The computer monitoring system as the control center of power station, undertakes the key task of pumped storage unit start-stop, working condition conversion and load regulation, and is the basis for realizing the intelligent operation and maintenance of "unattended, less manned" power station. With the acceleration of the construction of power spot market, the demand for pumped storage power station is significantly improved, which puts higher requirements on the dynamic response ability of the monitoring system.

[0003] However, the traditional control method of pumped storage unit relies on manual identification of dispatch curve by operation personnel and manual operation, which may have the risk of manual misoperation, resulting in low control safety of pumped storage unit. SUMMARY

[0004] Therefore, it is necessary to provide a control method, device, computer equipment, computer readable storage medium and computer program product of pumped storage unit based on real-time strategy verification for power spot market, which can improve the safety of pumped storage unit control.

[0005] In a first aspect, the present application provides a control method of pumped storage unit based on real-time strategy verification for power spot market, comprising:

[0006] obtaining permission information and mode information of pumped storage unit; the permission information is used to represent the control subject to which the control permission of the pumped storage unit belongs, and the control subject includes a power dispatch center or a pumped storage power station; the mode information is used to represent the start-stop mode of the pumped storage unit, and the start-stop mode includes a single remote start-stop mode or a planned curve start-stop mode;

[0007] In the case that the unit control instruction sent by the power dispatch center is received, the unit control instruction is verified according to the permission information, the mode information and the instruction information of the unit control instruction; the unit control instruction includes unit start-stop control instruction and unit load regulation instruction;

[0008] In the case that the unit start-stop control instruction passes the verification, the pumped storage unit is controlled to start and stop according to the unit start-stop control instruction;

[0009] In a case where the unit load adjustment instruction passes the verification, performing load adjustment control on the pumped storage unit according to the unit load adjustment instruction.

[0010] In one of the embodiments, the verification of the unit control instruction comprises:

[0011] For the unit start-stop control instruction, verifying whether the control subject represented by the permission information matches the power dispatch center;

[0012] Verifying whether the start-stop mode indicated by the instruction information matches the start-stop mode represented by the mode information;

[0013] In a case where both the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are the planned curve start-stop mode, verifying the legality of a planned curve contained in the instruction information; the planned curve comprises start-stop states corresponding to each time point in a preset future time period.

[0014] In one of the embodiments, the verification of the legality of the planned curve contained in the instruction information comprises:

[0015] For a single pumped storage unit, in a case where the unit planned shutdown time in the planned curve is less than a first time threshold, the unit running time after startup is less than a second time threshold, or the number of units started in a first preset time period exceeds a number threshold, it is determined that the planned curve does not have the legality;

[0016] For multiple pumped storage units, in a case where there are both pump working condition loads and power generation working condition loads in each of the pumped storage units in a second preset time period, it is determined that the planned curve does not have the legality.

[0017] In one of the embodiments, the verification of the unit control instruction comprises:

[0018] For the unit load adjustment instruction, in a case where the pumped storage unit is in a power generation state, and the load value indicated by the unit load adjustment instruction does not exceed the active adjustable limit value of the pumped storage unit, it is determined that the unit load adjustment instruction passes the verification;

[0019] In a case where the pumped storage unit is in a power generation state, and the deviation value between the load value indicated by the unit load adjustment instruction and the actual power generation power of the pumped storage unit does not exceed a deviation threshold, it is determined that the unit load adjustment instruction passes the verification.

[0020] In one of the embodiments, the start-stop control on the pumped storage unit according to the unit start-stop control instruction comprises:

[0021] In a case where both the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are the planned curve start-stop mode, the pumped storage unit is controlled to start according to the planned curve included in the instruction information.

[0022] In one of the embodiments, the load adjustment control of the pumped storage unit according to the unit load adjustment instruction includes:

[0023] In a case where both the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are the planned curve start-stop mode, and the pumped storage unit is controlled to start according to the planned curve included in the instruction information, the load of the pumped storage unit is adjusted to a minimum load limit value; and the load of the pumped storage unit is adjusted from the minimum load limit value as a starting point according to the load adjustment value included in the unit load adjustment instruction.

[0024] In a second aspect, the application further provides a control device of a pumped storage unit facing a real-time strategy verification based on a spot market of electric power, which includes:

[0025] The acquisition module is configured to acquire permission information and mode information of the pumped storage unit; the permission information is used to represent a control subject to which a control permission of the pumped storage unit belongs, and the control subject includes an electric power dispatch center or a pumped storage power station; and the mode information is used to represent a start-stop mode of the pumped storage unit, and the start-stop mode includes a single remote start-stop mode or a planned curve start-stop mode.

[0026] The verification module is configured to, in a case where the unit control instruction sent by the electric power dispatch center is received, verify the unit control instruction according to the permission information, the mode information, and instruction information of the unit control instruction; and the unit control instruction includes a unit start-stop control instruction and a unit load adjustment instruction.

[0027] The control module is configured to, in a case where the unit start-stop control instruction is verified, control the pumped storage unit to start-stop according to the unit start-stop control instruction; and in a case where the unit load adjustment instruction is verified, control the pumped storage unit to load adjustment according to the unit load adjustment instruction.

[0028] In a third aspect, the application further provides a computer device including a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0029] In a fourth aspect, the present application also provides a computer readable storage medium, having stored thereon a computer program, which, when executed by a processor, implements the steps of the above method.

[0030] In a fifth aspect, the present application also provides a computer program product, comprising a computer program which, when executed by a processor, implements the steps of the above method.

[0031] The above power spot market based on real-time strategy verification control method, device, computer equipment, computer readable storage medium and computer program product of pumped storage unit, obtain the permission information and mode information of the pumped storage unit; the permission information is used to represent the control subject to which the control permission of the pumped storage unit belongs, and the control subject includes a power dispatch center or a pumped storage power station; the mode information is used to represent the start-stop mode of the pumped storage unit, and the start-stop mode includes a single remote start-stop mode or a planned curve start-stop mode; in the case of receiving the unit control instruction sent by the power dispatch center, the unit control instruction is verified according to the permission information, the mode information and the instruction information of the unit control instruction; the unit control instruction includes a unit start-stop control instruction and a unit load regulation instruction; in the case that the unit start-stop control instruction passes the verification, the pumped storage unit is controlled to start and stop according to the unit start-stop control instruction; in the case that the unit load regulation instruction passes the verification, the pumped storage unit is controlled to regulate the load according to the unit load regulation instruction. In this way, by automatically obtaining the permission information and mode information of the pumped storage unit, when receiving the unit control instruction, the instruction is verified based on the permission information, the mode information and the instruction information, and the unit control is automatically executed after the verification, so that the monitoring system can directly receive and automatically execute the unit control instruction issued by the power dispatch center, thereby automatically performing the start-stop control of the unit and the load regulation of the unit, improving the automatic execution capability of the monitoring system, effectively meeting the timeliness requirement of the power spot market, avoiding the response lag problem caused by manual operation, and also avoiding the safety risk caused by manual misoperation. Through real-time verification of the unit control instruction, the safety and reliability of the pumped storage unit control are improved, at the same time, by introducing a comprehensive and reliable control strategy verification mechanism, the response speed is ensured while providing an important guarantee for the safe and stable operation of the unit, becoming a necessary technical basis for supporting the safe and efficient participation of the pumped storage power station in the power spot market. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, below will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0033] Figure 1 An application environment diagram of a control method of a pumped storage unit based on real-time strategy verification for a power spot market in an embodiment;

[0034] Figure 2 A flowchart of a control method of a pumped storage unit based on real-time strategy verification for a power spot market in an embodiment;

[0035] Figure 3 A logic diagram of a control method of a pumped storage unit based on real-time strategy verification for a power spot market in an embodiment;

[0036] Figure 4 A structural block diagram of a control device of a pumped storage unit based on real-time strategy verification for a power spot market in an embodiment;

[0037] Figure 5 An internal structure diagram of a computer device in an embodiment. DETAILED DESCRIPTION

[0038] In order to make the purposes, technical solutions and advantages of the present application more clear, below will further describe the present application in combination with the 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.

[0039] The control method of the pumped storage unit based on real-time strategy verification for a power spot market provided by the embodiments of the present application can be applied in the application environment as shown in Figure 1 . The hardware structure of the monitoring system of the pumped storage power station can be as shown in Figure 1 . In the monitoring system, the server, the remote communication machine and the like constitute the upper computer system, and the local control unit (LCU) of each unit and the like constitute the lower computer system. The remote communication machine is used for communication with the dispatching, and can receive the remote control and remote adjustment signals such as the remote control start and stop machine instruction, the single machine planning curve, the load set value and the like issued by the dispatching. The server of the upper computer integrates the unit control method proposed in the present application, and after verifying the dispatching instruction, issues it to the corresponding unit LCU. The unit LCU receives the control command, and executes the corresponding control flow and load adjustment program.

[0040] The monitoring system obtains permission information and mode information of the pumped storage unit. The permission information is used to represent a control subject to which a control permission of the pumped storage unit belongs, and the control subject includes a power dispatch center or a pumped storage power station. The mode information is used to represent a start-stop mode in which the pumped storage unit is located, and the start-stop mode includes a single remote start-stop mode or a planned curve start-stop mode. In a case where the monitoring system receives a unit control instruction sent by the power dispatch center, the monitoring system verifies the unit control instruction according to the permission information, the mode information, and instruction information of the unit control instruction. The unit control instruction includes a unit start-stop control instruction and a unit load regulation instruction. In a case where the unit start-stop control instruction passes the verification, the monitoring system controls the pumped storage unit according to the unit start-stop control instruction. In a case where the unit load regulation instruction passes the verification, the monitoring system controls the pumped storage unit according to the unit load regulation instruction.

[0041] In one exemplary embodiment, as shown in Figure 2 , a control method of a pumped storage unit based on real-time strategy verification for a power spot market is provided. The method is applied to a monitoring system in Figure 1 for example, and includes the following steps.

[0042] In step S202, permission information and mode information of the pumped storage unit are obtained.

[0043] The permission information is used to represent a control subject to which a control permission of the pumped storage unit belongs, and the control subject includes a power dispatch center or a pumped storage power station. The mode information is used to represent a start-stop mode in which the pumped storage unit is located, and the start-stop mode includes a single remote start-stop mode or a planned curve start-stop mode.

[0044] The pumped storage unit can include a power generation device installed in the pumped storage power station. The power generation device can consume electric energy to pump water from a lower reservoir to an upper reservoir when the load of a power grid is low, and release the water in the upper reservoir to the lower reservoir to generate power when the load of the power grid is high. The pumped storage unit has two operating states of a power generation condition and a water pumping condition. In the power generation condition, the unit outputs electric energy to the power grid, and in the water pumping condition, the unit absorbs electric energy from the power grid.

[0045] The permission information is used to identify which control subject currently has the control permission of the pumped storage unit. The control subject includes the power dispatch center and the pumped storage power station.

[0046] The power dispatch center includes a remote control center responsible for power grid operation dispatching, which can be located outside the power station and interact with the power station through a communication network. The power dispatch center can be referred to as “dispatching” in the present application. The pumped storage power station includes a local power station where the unit is located. The operating personnel in the pumped storage power station can manually operate the unit. The pumped storage power station can be referred to as “power station” in the present application.

[0047] In specific implementations, the confirmation of the unit control authority and the start-stop mode can be confirmation of the unit control authority in the power dispatch center or the pumped storage power station. If the control authority is in the power dispatch center, the pumped storage unit is in the dispatch side remote control, and the power dispatch center has the control authority of the unit and can issue a unit control instruction. The unit control instruction can include a unit start-stop control instruction and a unit load regulation instruction. The unit start-stop control instruction can further include a single remote start-stop instruction and a planned curve start-stop instruction. The single remote start-stop instruction can be used to instruct the pumped storage unit to execute the single remote start-stop mode, and the planned curve start-stop instruction can be used to instruct the pumped storage unit to execute the planned curve start-stop mode. When the control authority is in the pumped storage power station, the pumped storage unit is in the power station side present location control, and the operating personnel in the power station have the control authority of the unit and can manually operate the unit.

[0048] The mode information is used to identify the start-stop mode in which the pumped storage unit currently exists. The start-stop mode includes a single remote start-stop mode and a planned curve start-stop mode.

[0049] The single remote start-stop mode refers to that the monitoring system performs a start or stop operation each time a start-stop instruction is received. For example, the power dispatch center issues a start instruction, and the monitoring system controls the unit to start. The power dispatch center issues a stop instruction, and the monitoring system controls the unit to stop. In the single remote start-stop mode, each start-stop operation needs a separate instruction to trigger.

[0050] The planned curve start-stop mode refers to that the monitoring system automatically determines the start-stop time of the unit and performs the corresponding start-stop operation according to the planned curve issued by the power dispatch center. The planned curve includes the start-stop state or load value corresponding to each time point in the preset future time period. For example, the planned curve can specify the unit load value or working condition state corresponding to each 5-minute interval in the next 24 hours. The monitoring system automatically determines when to start the unit, when to stop the unit, and how to regulate the load according to the data in the planned curve, without the need to issue an instruction for each start-stop operation.

[0051] The monitoring system can send the current state telemetering signal of the unit to the power dispatch center. The dispatch side can switch between the single remote start-stop mode and the planned curve start-stop mode through remote control instructions.

[0052] In practical applications, the monitoring system can obtain the permission information and mode information of the pumped storage unit by reading the configuration data stored in the server or the local data storage system. The permission information and mode information can be set by the power station operator on the human-computer interaction interface of the monitoring system, or by the power dispatching center through remote communication.

[0053] Specifically, each pumped storage unit can be configured with a control permission selection switch, and the operator selects the control permission of the unit through the switch. When the control permission selection switch is set to dispatch, the permission information indicates that the control subject is the power dispatching center; when the control permission selection switch is set to power station, the permission information indicates that the control subject is the pumped storage power station.

[0054] Specifically, each pumped storage unit can also be configured with a start-stop mode selection pressure plate for selecting the start-stop mode of the pumped storage unit. By default, it can be a single remote control start-stop mode, which can be switched to a planned curve start-stop mode. These two modes only take effect when the control permission of the unit belongs to the dispatch.

[0055] For example, when the control permission of the unit belongs to the power station, the pumped storage unit only receives the manual start-stop operation of the station side operator, and at the same time, the start-stop mode is automatically switched to the single remote control start-stop mode, preparing for the next control permission to return to the dispatch. When the control permission of the unit belongs to the dispatch, and the start-stop mode selects the single remote control start-stop mode, the pumped storage unit starts and stops according to the single remote control start-stop instruction issued by the dispatch. When the control permission of the unit belongs to the dispatch, and the start-stop mode selects the planned curve start-stop mode, the unit can automatically start and stop according to the planned curve start-stop instruction issued by the dispatch.

[0056] For example, when the control permission of the pumped storage unit is in the power dispatching center, the pumped storage unit can receive the unit start-stop control instruction (including single remote control start-stop instruction and planned curve start-stop instruction) issued by the power dispatching center. The pumped storage unit can automatically start and stop according to the single remote control start-stop instruction issued by the power dispatching center, or automatically start and stop according to the planned curve start-stop instruction issued by the power dispatching center, or receive the unit load regulation instruction issued by the dispatch for load regulation; but it does not respond to the manual start-stop operation of the station side operator.

[0057] For example, when the control permission of the pumped storage unit is in the pumped storage power station, the pumped storage unit can only be manually operated by the station side operator, and does not respond to the single remote control start-stop instruction or the planned curve start-stop instruction issued by the power dispatching center. It can receive the manual load regulation of the station side operator, and does not respond to the unit load regulation instruction issued by the dispatch for load regulation.

[0058] Step S204, in the case of receiving the unit control instruction sent by the power dispatching center, the unit control instruction is verified according to the permission information, the mode information and the instruction information of the unit control instruction.

[0059] The unit control instruction includes a unit start-stop control instruction and a unit load adjustment instruction. The unit control instruction is an instruction for controlling the operation of the pumped storage unit, and the unit control instruction can be issued by the power dispatching center through a remote communication mode. Further, the unit start-stop control instruction can further include a single remote control start-stop instruction and a planned curve start-stop instruction. The single remote control start-stop instruction can be used to instruct the pumped storage unit to execute a single remote control start-stop mode, and the planned curve start-stop instruction can be used to instruct the pumped storage unit to execute a planned curve start-stop mode.

[0060] The instruction information includes specific operations required to be executed by the unit control instruction, such as starting the unit, stopping the unit, adjusting the load to a certain value, switching the start-stop mode, etc.

[0061] In a specific implementation, verifying the unit control instruction can include verifying the unit start-stop control instruction and verifying the unit load adjustment instruction.

[0062] The verification of the unit start-stop control instruction can include: control permission verification, i.e., verification of the power station instruction and the dispatch instruction under different control permissions; start-stop mode verification, i.e., verification of the single remote control start-stop instruction and the planned curve start-stop instruction under different start-stop modes; and verification of the legality of the planned curve included in the planned curve start-stop instruction.

[0063] In one embodiment, the process of control permission verification can be as follows: when the unit control permission belongs to the pumped storage power station, the following verification can be performed:

[0064] The monitoring system screen locks the power station side for unit start-stop mode selection, and prohibits switching from the single remote control start-stop mode to the planned curve start-stop mode. At the same time, if a unit start-stop mode selection instruction from the power station side is received, an alarm reminder "unit control right in the power station, start-stop mode switching invalid" is generated, and the instruction is refused to be executed;

[0065] When the monitoring system receives the unit start-stop control instruction issued by the dispatch, an alarm reminder "unit control right in the power station, dispatch remote control start-stop instruction invalid" is generated, and the instruction is refused to be executed. If a unit manual start-stop instruction operation from the power station is received, it is normally responded.

[0066] When the monitoring system receives the unit load adjustment instruction issued by the dispatch, an alarm reminder "unit control right in the power station, dispatch load adjustment instruction invalid" is generated, and the instruction is refused to be executed. If a unit load adjustment instruction operation from the power station is received, it is normally responded.

[0067] When the unit control right belongs to the power dispatch center, the following verification can be performed:

[0068] The power station side can select the unit start-stop mode through the monitoring system screen, allow switching between the single remote start-stop mode and the planned curve start-stop mode, generate an alarm reminder when switching, and display the state on the screen;

[0069] The dispatch side can switch between the single remote start-stop mode and the planned curve start-stop mode through the unit start-stop control instruction;

[0070] The monitoring system screen locks the unit manual start-stop instruction operation of the power station side, and if a unit manual start-stop instruction is received from the power station side, an alarm reminder "unit control right belongs to dispatch, power station manual start-stop instruction invalid" is generated, and the instruction is refused to be executed. If a unit start-stop control instruction is received from the dispatch, it is normally responded. If a unit load regulation instruction is received from the dispatch, it is normally responded.

[0071] In one embodiment, the process of start-stop mode verification can be as follows:

[0072] When the unit control right belongs to the pumped storage power station, if the unit start-stop mode is the planned curve start-stop mode, the unit start-stop mode is automatically switched to the single remote start-stop mode;

[0073] When the unit control right belongs to the power dispatch center, the power station side can select the unit start-stop mode through the monitoring system screen, allow switching between the single remote start-stop mode and the planned curve start-stop mode, generate an alarm reminder when switching, and display the state on the screen;

[0074] When the single remote start-stop mode of the unit is put into operation, the monitoring system performs start-stop control according to the single remote start-stop instruction issued by the dispatch, can normally receive the planned curve start-stop instruction and display the planned curve in the instruction, but does not perform start-stop control according to the planned curve;

[0075] When the planned curve start-stop mode of the unit is put into operation, the monitoring system performs start-stop control according to the planned curve start-stop instruction issued by the dispatch. When a single remote start-stop instruction is received from the dispatch, an alarm reminder "unit is in planned curve start-stop mode, single remote start-stop instruction invalid" is generated, and the instruction is refused to be executed;

[0076] When the planned curve start-stop mode of the unit is put into operation, if the current working condition of the unit is inconsistent with the planned curve, it is not allowed to be put into operation.

[0077] In one of the embodiments, the legality check of the planning curve can be used to check the planning curve issued by the power dispatching center. When the planning curve is abnormal, there are two processing modes: only triggering the alarm, and triggering the alarm and switching the unit control right back to the power station. The process of the legality check of the planning curve can be as follows:

[0078] When reading the new planning curve, the planning values after the current time of the planning curve are analyzed. If the shutdown time is less than 15 minutes, the alarm is triggered, the running time after starting is less than 15 minutes, the alarm is triggered, or there are more than 2 units (not including 2) generating or more than 1 unit pumping within 15 minutes (including 15 minutes), it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0079] When reading the new planning curve, the planning values after the current time of the planning curve are analyzed. If the shutdown time is less than 15 minutes, the alarm is triggered, the running time after starting is less than 15 minutes, the alarm is triggered, or there are more than 2 units (not including 2) generating or more than 1 unit pumping within 15 minutes (including 15 minutes), it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0080] If more than 25 minutes, no planning curve is received from the dispatch, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0081] Before 20:30 every day, no day-ahead planning curve is received, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0082] Because the grid frequency and the starting condition do not meet the missed start-stop point, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0083] In the planning curve start-stop mode, the CP working condition runs for more than 5 minutes, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0084] The first planning point after the current time is analyzed for 15 minutes. If the running time after starting is less than 15 minutes, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0085] The first planning point after the current time is analyzed for 15 minutes. If the running time after starting is less than 15 minutes, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0086] The actual state of the unit and the planning curve are inconsistent, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0087] The planning curve is all 0 or the planning curve exceeds the upper and lower limits, it is determined that the planning curve does not pass the check, and the alarm is triggered;

[0088] If the planned curve of 15 minutes before and after the first planned point after the current time is analyzed, and if the shutdown time is less than 15 minutes, it is determined that the planned curve does not pass the verification, the unit control authority is switched back to the power station, and an alarm is triggered; (Explanation of 15 minutes before and after the first planned point after the current time: If the current time is 12:01:00, the first planned point after the current time is 12:05:00, the first 15 minutes refer to 11:50:00-12:05:00; the last 15 minutes refer to 12:05:00-12:20:00);

[0089] If the planned curve of 5 minutes before and after the first planned point after the current time is analyzed, and if the pump working condition and the power generation working condition load exist at the same time within 5 minutes, it is determined that the planned curve does not pass the verification, the unit control authority is switched back to the power station, and an alarm is triggered;

[0090] If the daily planned curve is not received by 23:45 every day, it is determined that the planned curve does not pass the verification, the unit control authority is switched back to the power station, and an alarm is triggered.

[0091] The verification of the unit load regulation instruction can include: legality verification of the unit load regulation instruction, that is, when the control authority of the unit is in the dispatch, the monitoring system performs legality verification on the unit load regulation instruction received by the dispatch.

[0092] In one embodiment, the process of legality verification of the unit load regulation instruction can include:

[0093] When the unit is in a non-power generation state, the unit load regulation instruction received by the dispatch triggers an alarm, and simultaneously refuses to execute;

[0094] When the unit is in a power generation state, the unit load regulation instruction received by the dispatch exceeds the upper limit or lower limit of the active adjustable range of the unit, triggers an alarm, and simultaneously refuses to execute;

[0095] When the unit is in a power generation state, the unit load regulation instruction received by the dispatch deviates from the current actual value by more than the gradient limit value or is in a dead zone, triggers an alarm, and simultaneously refuses to execute.

[0096] Step S206, in the case where the unit start-stop control instruction passes the verification, the pumped storage unit is controlled according to the unit start-stop control instruction.

[0097] In a specific implementation, the unit start-stop control can be performed according to the verified strategy. If the unit start-stop control instruction indicates to execute a single remote start-stop mode, the monitoring system can issue a corresponding start or stop command to the pumped storage unit to control the pumped storage unit to execute a corresponding start-stop control process.

[0098] If the unit start-stop control instruction indicates to execute the planned curve start-stop mode, the monitoring system automatically determines the start-stop time of the unit according to the start-stop state or load value of each time point in the preset future time period in the planned curve, and issues a start or stop command to the pumped storage unit at the appropriate time point.

[0099] For example, the start-stop advance time of each pumped storage unit is set according to the actual situation, including: power generation start-up advance minutes, pumped storage and phase modulation to pumped storage start-up advance minutes, shutdown advance minutes, pumped storage and phase modulation start-up advance minutes, etc. For example, each unit is set to have a power generation start-up advance minute Tg (0min < Tg < 5min), a pumped storage and phase modulation to pumped storage start-up advance minute Tp (0min < Tp < 5min), a shutdown advance minute Ts (0min < Ts < 5min), and a pumped storage and phase modulation start-up advance minute Tcp (10min), which can be manually set according to actual needs. The adjustable range of unit power generation can be 150MW-300MW, and the fixed power of pumped storage can be -300MW.

[0100] In the planned curve start-stop mode of the unit, at every whole 5-minute time, a planned curve is automatically identified, the planned value T5 corresponding to the next whole 5-minute time and the planned value T10 corresponding to the next whole 10-minute time are identified, and no curve identification is performed at other times. If the dispatching modifies the planned values corresponding to the next whole 5-minute and the next whole 10-minute time at a non-integer 5-minute time, the program needs to be identified and processed.

[0101] In the planned curve start-stop mode of the unit, the start-stop judgment is automatically performed according to the T5 and T10 planned values and in combination with the set start-stop advance times Tg, Tp, Ts, and Tcp, and the advance start-stop is performed according to the planned values and the advance times to ensure that the unit reaches a steady state at the time corresponding to the planned value. For example, if the planned value corresponding to T5 time >=145MW, when Tg time arrives, a power generation start-up instruction is automatically issued to the unit LCU; if the planned value corresponding to T10 time <145MW, if the unit is in a shutdown state, when Tcp time arrives, a pumped storage and phase modulation instruction is automatically issued to the unit LCU; if the planned value corresponding to T5 time <145MW, if the unit is in a pumped storage and phase modulation state or in a pumped storage and phase modulation process, when Tp time arrives, a pumped storage instruction is automatically issued to the unit LCU; and if the planned value corresponding to T5 time <145MW, when Ts time arrives, a shutdown instruction is automatically issued to the unit LCU.

[0102] In the planned curve start-stop mode of the unit, the automatic start-stop of the unit power generation and pump working conditions is realized according to the planned curve, and the phase modulation mode is manually started and stopped. After the unit power generation working condition is started, the load regulation of each unit is performed according to the unit load regulation instruction issued by the dispatching AGC master station (single-machine active set value), without following the planned curve.

[0103] Within 15 minutes, allow 2 units to develop electricity at the same time, only allow 1 unit to open pumping, allow multiple units to generate electricity at the same time, allow multiple units to stop pumping at the same time, and do not allow the same unit to exist in power generation and pumping conditions.

[0104] The unit start-stop control instruction can include start-up instruction and shutdown instruction. Before issuing the start-up instruction, it is necessary to judge whether the start-up condition is met. If the start-up condition is not met (such as main shaft seal backwashing action), after a delay (the delay time is slightly longer than the time of main shaft seal backwashing), if the start-up condition is still not met, the unit control right is switched back to the power station and an alarm is triggered.

[0105] Before issuing the start-up instruction and the shutdown instruction, it is necessary to judge whether the grid frequency meets the start-stop requirement, set the start-stop delay, and if the frequency meets within the delay, start or stop normally, if the frequency still does not meet after the delay time, switch the unit control right back to the power station, do not start or stop this time, and contact the dispatch to judge whether to continue to execute the plan. For example, before issuing the start-up instruction, it is necessary to judge the grid frequency, and if the grid frequency is higher than 50.05 Hz, do not develop electricity, and if the grid frequency is lower than 49.95 Hz, do not open the pumping condition, if the frequency meets within 90 seconds, start normally, if the frequency still does not meet after 90 seconds, switch the unit control right back to the power station, do not start this time, and contact the dispatch to judge whether to continue to execute the plan; before issuing the shutdown instruction, it is necessary to judge the grid frequency, if the grid frequency is lower than 49.95 Hz, do not stop power generation, and if the grid frequency is higher than 50.05 Hz, do not stop the pumping condition, if the frequency meets within 90 seconds, stop normally, if the frequency still does not meet after 90 seconds, switch the unit control right back to the power station, do not stop this time, and contact the dispatch to judge whether to continue to execute the plan.

[0106] In order to avoid the impact of multiple units stopping on the grid load, when detecting that the planned curve load has 2 or more units stopping at the same time, it is necessary to consider stopping the units one by one after a certain time interval (such as 60 seconds) after the stopping advance time. The stopping advance time Ts and the time interval of stopping the units one by one are considered. For example, only 1 unit stopping: unit 1 has a load of 300 MW at 11:55 and a load of 0 at 12:00, then at 12:00-Ts, issue the stop unit 1 instruction; 2 units stopping: unit 1 has a load of 300 MW at 11:55 and a load of 0 at 12:00, and unit 2 has a load of 300 MW at 11:55 and a load of 0 at 12:00, then at 12:00-Ts, issue the stop unit 1 instruction, and at 11:59-Ts, issue the stop unit 2 instruction; 3 units and 4 units stopping at the same time, and so on.

[0107] Step S208, in the case that the unit load adjustment instruction passes the verification, the pumped storage unit is controlled according to the unit load adjustment instruction.

[0108] In the specific implementation, the load setting value can be obtained from the unit load adjustment instruction, and the pumped storage unit is controlled to adjust the power generation power or the pumping power of the unit according to the load setting value.

[0109] In the actual application, when the control authority of the pumped storage unit is in the power dispatching center, the monitoring system can verify the legality of the unit load adjustment instruction issued by the power dispatching center, and then issue the legal value to the unit LCU for load adjustment. When the unit is in the planned curve start-stop mode, the monitoring system executes the start-up to the minimum load according to the planned curve, and then follows the remote value issued by the dispatch AGC to execute.

[0110] The control method of the pumped storage unit of the embodiment of the application realizes the automatic start-stop control of the unit according to the single-machine remote start-stop instruction or the single-machine planned curve issued by the dispatching. At the same time, the unit load adjustment is automatically performed according to the single-machine remote instruction issued by the dispatching to meet the timeliness demand of the electricity spot market. In the process of start-stop control and load adjustment, the control right of the current unit, the start-stop mode, the operation condition of the power station, the remote start-stop instruction, the planned curve and the legality of the remote instruction are considered, and the start-stop control and the load adjustment of the unit are performed under the premise of ensuring the safe operation of the power station. In general, the control method of the pumped storage unit of the embodiment of the application includes the unit operation mode, the strategy verification, the start-stop control and the load adjustment, the direct and automatic start-stop control and the load adjustment of the pumped storage unit by the dispatching are realized to realize the rapid response to the planned curve, and at the same time, a comprehensive and reliable strategy verification mechanism is designed to ensure the safe and stable operation of the unit.

[0111] In the control method for the pumped storage unit based on real-time strategy verification in the power spot market, the permission information and the mode information of the pumped storage unit are automatically obtained, and when the unit control instruction is received, the instruction is verified based on the permission information, the mode information and the instruction information, and the unit control is automatically executed after the verification, so that the monitoring system can directly receive and automatically execute the unit control instruction issued by the power dispatching center, thereby automatically controlling the start and stop of the unit and adjusting the load of the unit, improving the automatic execution capability of the monitoring system, effectively meeting the timeliness requirement of the power spot market, avoiding the response lag problem caused by manual operation, and avoiding the safety risk caused by manual misoperation. Through real-time verification of the unit control instruction, the safety and reliability of the pumped storage unit control are improved, and at the same time, through the introduction of a comprehensive and reliable control strategy verification mechanism, the response speed is ensured, and important protection is provided for the safe and stable operation of the unit, which becomes a necessary technical basis for supporting the safe and efficient participation of pumped storage power stations in the power spot market.

[0112] In another embodiment, verifying the unit control instruction comprises: for the unit start-stop control instruction, verifying whether the control subject represented by the permission information matches the power dispatching center; verifying whether the start-stop mode indicated by the instruction information matches the start-stop mode represented by the mode information; in the case that the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are both plan curve start-stop modes, verifying the legality of the plan curve contained in the instruction information; the plan curve comprises the start-stop state corresponding to each time point in a preset future time period.

[0113] Firstly, the monitoring system verifies whether the control subject represented by the permission information matches the power dispatching center. Specifically, the power dispatching center can send a unit start-stop control instruction to the monitoring system, and the monitoring system can verify whether its control permission belongs to the power dispatching center, so as to confirm whether the unit start-stop control instruction sent by the power dispatching center can be received.

[0114] Secondly, the monitoring system verifies whether the start-stop mode indicated by the instruction information matches the start-stop mode represented by the mode information. The instruction information can be used to indicate the start-stop mode executed by the unit. For example, when the start-stop mode indicated by the instruction information is a single remote start-stop mode (i.e. the unit start-stop control instruction is a single remote start-stop instruction), if the mode information represents that the unit is in the single remote start-stop mode, the verification is passed; if the mode information represents that the unit is in the plan curve start-stop mode, the verification is not passed. For another example, when the start-stop mode indicated by the instruction information is a plan curve start-stop mode (i.e. the unit start-stop control instruction is a plan curve start-stop instruction), if the mode information represents that the unit is in the plan curve start-stop mode, the verification is passed; if the mode information represents that the unit is in the single remote start-stop mode, the verification is not passed.

[0115] Further, in the case that both the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are the planned curve start-stop mode, the monitoring system also needs to verify the legality of the planned curve contained in the instruction information. The planned curve includes the start-stop state or load value corresponding to each time point in the preset future time period. The legality verification of the planned curve mainly detects whether the data in the planned curve meets the safety requirements and rationality requirements of unit operation.

[0116] For example, the monitoring system detects whether the shutdown time of the unit in the planned curve is less than the preset minimum shutdown time threshold, detects whether the running time of the unit after starting is less than the preset minimum running time threshold, detects whether the number of units started in the preset time period exceeds the number threshold, and detects whether the pump working condition load and the power generation working condition load exist simultaneously in the planned curves of different units, etc. If there is data in the planned curve that does not meet the requirements, the planned curve does not have legality, and the verification fails; if all data in the planned curve meet the requirements, the planned curve has legality, and the verification passes.

[0117] In another embodiment, verifying the legality of the planned curve contained in the instruction information includes: for a single pumped storage unit, in the case that the planned shutdown time of the unit in the planned curve is less than a first time threshold, the running time of the unit after starting is less than a second time threshold, or the number of units started in a first preset time period exceeds a number threshold, it is determined that the planned curve does not have legality; for multiple pumped storage units, in the case that the pump working condition load and the power generation working condition load exist simultaneously in each pumped storage unit in a second preset time period, it is determined that the planned curve does not have legality.

[0118] In specific implementation, the legality verification of the planned curve includes verification for a single pumped storage unit and verification for multiple pumped storage units.

[0119] For a single pumped storage unit, the monitoring system detects whether the planned shutdown time of the unit in the planned curve is less than a first time threshold. The planned shutdown time of the unit is the time interval from the stop state to the start state of the unit again. The first time threshold is a preset minimum shutdown time, for example, 15 minutes. If the planned shutdown time of the unit is less than the first time threshold, it means that the unit needs to start again soon after shutdown, and frequent start-stop operations may cause damage to the unit equipment, so the planned curve does not have legality.

[0120] The monitoring system also detects whether the running time of the unit after starting in the planned curve is less than a second time threshold. The running time of the unit after starting refers to the time interval between the starting state and the stopping state of the unit. The second time threshold is a preset minimum running time, for example, 15 minutes. If the running time of the unit after starting is less than the second time threshold, it means that the unit needs to stop soon after starting, and such short running may cause the unit to fail to reach a stable running state, affecting the performance and service life of the unit, so the planned curve is not legal.

[0121] The monitoring system also detects whether the number of units started in the first preset time period exceeds a number threshold. The first preset time period refers to a short time window, for example, 15 minutes. The number threshold is the maximum number of simultaneously started units set for different working conditions, for example, in the power generation working condition, the number threshold can be set to 2 units, and in the pumping working condition, the number threshold can be set to 1 unit. If the number of units started in the first preset time period exceeds the number threshold, it may cause a large impact on the power grid, affecting the stability of the power grid, so the planned curve is not legal.

[0122] For multiple pumped storage units, the monitoring system detects whether there are pump working condition loads and power generation working condition loads in the second preset time period. The second preset time period refers to a short time window, for example, 5 minutes. The pump working condition load refers to the load absorbed from the power grid when the unit is in the pumping state, and the power generation working condition load refers to the load output to the power grid when the unit is in the power generation state. If there are pump working condition loads and power generation working condition loads in the second preset time period, it means that some units are pumping while other units are generating power, in which case the overall efficiency of the pumped storage power station is low, and the purpose of power dispatching may be violated, so the planned curve is not legal.

[0123] In another embodiment, the unit control instruction is verified, including: for the unit load adjustment instruction, in the case that the pumped storage unit is in the power generation state and the load value indicated by the unit load adjustment instruction does not exceed the active adjustable limit value of the pumped storage unit, it is determined that the unit load adjustment instruction passes the verification; in the case that the pumped storage unit is in the power generation state and the deviation value between the load value indicated by the unit load adjustment instruction and the actual power generation power of the pumped storage unit does not exceed a deviation threshold, it is determined that the unit load adjustment instruction passes the verification.

[0124] Firstly, the monitoring system detects whether the pumped storage unit is in a power generation state. The power generation state refers to an operation state in which the unit is outputting electric energy to the power grid. If the unit is in a non-power generation state, such as a shutdown state, a pumping state, or a phase modulation state, the unit load adjustment instruction should not be executed, because the unit load adjustment instruction is only applicable to load adjustment in the power generation state. When the monitoring system detects that the unit is in a non-power generation state and receives a unit load adjustment instruction, it determines that the unit load adjustment instruction does not pass the check, triggers an alarm, and refuses to execute the instruction.

[0125] Secondly, the monitoring system detects whether the load value indicated by the unit load adjustment instruction exceeds the active adjustable limit value of the pumped storage unit. The active adjustable limit value includes an active adjustable upper limit and an active adjustable lower limit, representing the load range that the unit can adjust in the power generation state. For example, the active adjustable lower limit of a certain unit is 150 megawatts, and the active adjustable upper limit is 300 megawatts, meaning that the load of the unit in the power generation state can only be adjusted between 150 megawatts and 300 megawatts. If the load value indicated by the unit load adjustment instruction exceeds the active adjustable upper limit or is lower than the active adjustable lower limit, the load value exceeds the safe operation range of the unit and should not be executed. When the monitoring system detects that the load value indicated by the unit load adjustment instruction exceeds the active adjustable limit value, it determines that the unit load adjustment instruction does not pass the check, triggers an alarm, and refuses to execute the instruction.

[0126] Thirdly, the monitoring system detects whether the deviation value between the load value indicated by the unit load adjustment instruction and the actual power generation of the pumped storage unit exceeds the deviation threshold. The deviation threshold is a pre-set load adjustment allowable deviation range, used to prevent the load change required by the unit load adjustment instruction from being too large or too small. For example, the deviation threshold can be set to 100 megawatts, meaning that the difference between the load value indicated by the unit load adjustment instruction and the current actual load of the unit should not exceed 100 megawatts. If the deviation value exceeds the deviation threshold, it means that the load change required by the unit load adjustment instruction is too large, which may cause the unit to run unstable or cause impact on the power grid, and should not be executed. At the same time, if the deviation value is within a dead zone, such as less than 5 megawatts, it means that the load change required by the unit load adjustment instruction is too small, and it is not meaningful to execute the instruction. When the monitoring system detects that the deviation value between the load value indicated by the unit load adjustment instruction and the actual power generation of the unit exceeds the deviation threshold or is within the dead zone, it determines that the unit load adjustment instruction does not pass the check, triggers an alarm, and refuses to execute the instruction.

[0127] By performing multi-dimensional legality check on the unit load adjustment instruction, it can ensure that the unit load adjustment instruction is executed under the premise of meeting the unit operation state and safe range, avoid abnormal operation of the unit or damage to the equipment caused by unreasonable unit load adjustment instruction, and ensure the safe and stable operation of the unit and the power grid.

[0128] In another embodiment, the start-stop control of the pumped storage unit according to the unit start-stop control instruction includes: in the case that the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are both plan curve start-stop modes, the start-stop control of the pumped storage unit is performed according to the start-stop state of each time point in the preset future time period in the plan curve contained in the instruction information and the preset start-stop advance time.

[0129] In a specific implementation, when the unit is in the plan curve start-stop mode, the monitoring system needs to automatically determine the start-stop timing of the unit according to the plan curve. Since the unit needs a certain time from receiving the start command to actually reaching the stable running state, the monitoring system needs to issue the start command in advance by a certain time to ensure that the unit reaches the target state at the time point specified by the plan curve.

[0130] The preset start-stop advance time includes power generation start-up advance time, pumped storage start-up advance time, shutdown advance time, etc. Each advance time can be set according to the actual characteristics of the unit. For example, the power generation start-up advance time can be set to 3 minutes, indicating that the start command is issued 3 minutes before the start time specified by the plan curve; the shutdown advance time can be set to 2 minutes, indicating that the shutdown command is issued 2 minutes before the shutdown time specified by the plan curve.

[0131] The monitoring system calculates the time point of actually issuing the control command according to the start-stop state of each time point in the plan curve and in combination with the preset start-stop advance time. Specifically, the monitoring system reads the plan curve at a preset time interval (for example, every 5 minutes), identifies the plan values of the next time point and the next time point, determines whether the unit needs to start or stop, and calculates the actual command issuing time considering the advance time.

[0132] By automatically performing the start-stop control according to the plan curve and the preset start-stop advance time, the precise start-stop of the unit can be realized, ensuring that the unit reaches the target state at the time point specified by the plan curve and meeting the timeliness requirement of power dispatching.

[0133] In another embodiment, the load adjustment control of the pumped storage unit according to the unit load adjustment instruction includes: in the case that the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are both plan curve start-stop modes and the pumped storage unit is started according to the plan curve control contained in the instruction information, adjusting the load of the pumped storage unit to the minimum load limit; adjusting the load of the pumped storage unit with the minimum load limit as the starting point according to the load adjustment value contained in the unit load adjustment instruction.

[0134] In a specific implementation, the monitoring system judges whether the start-stop mode represented by the mode information table and the start-stop mode indicated by the instruction information are both plan curve start-stop modes. If both are plan curve start-stop modes, it indicates that the current unit is in an automatic control mode according to the plan curve. The monitoring system further judges whether the pumped storage unit is being controlled according to the plan curve contained in the instruction information. The control of the unit start according to the plan curve refers to the case that the monitoring system analyzes the plan curve, identifies that the unit should be switched from the stop state to the power generation state at a certain time, has issued a start instruction, and the unit is executing the start process or has just completed the start process. At this stage, the unit has just been connected to the grid, and the running state is not yet completely stable, and a stable basic load point needs to be established first.

[0135] wherein the minimum load limit refers to the minimum active power output value that the pumped storage unit can maintain stable operation in the power generation condition. The value is determined by the technical characteristics of the unit, and is usually a certain proportion of the rated capacity of the unit. The specific value of the minimum load limit is determined according to the technical specifications of different types of units and stored in the configuration parameters of the monitoring system.

[0136] Under the condition of meeting the above conditions, the monitoring system first adjusts the load of the pumped storage unit to the minimum load limit. When the actual output power of the unit reaches the minimum load limit and the operating parameters are stable, the monitoring system judges that the unit has established a stable basic load point, and at this time the unit is in a stable power generation standby state. In this state, the unit has the ability to further adjust the load and can respond to the load adjustment instruction issued by the power dispatching center.

[0137] In a specific implementation, after the unit reaches the minimum load limit and operates stably, the monitoring system starts to respond to the unit load adjustment instruction issued by the power dispatching center. The unit load adjustment instruction contains a load adjustment value, which represents the target load required by the power dispatching center for the unit to adjust to.

[0138] After receiving the unit load adjustment instruction, the monitoring system reads the load adjustment value contained therein. The monitoring system takes the minimum load limit as the starting point to adjust the load of the pumped storage unit.

[0139] The technical scheme of the embodiments of the present application adopts a phased load adjustment strategy when performing load adjustment control in the plan curve start-stop mode. The strategy first ensures that the unit reaches a stable basic running state after starting, and then performs fine adjustment according to the load adjustment instruction of the power dispatching center. At the same time, based on the separation type control strategy, the plan curve is used for start-stop control, and the load adjustment instruction is used for load control, so that the pumped storage unit can not only perform orderly start-stop operation according to the day-ahead or real-time plan, but also flexibly respond to the real-time adjustment demand of the power grid, realizing the organic combination of planning and flexibility.

[0140] For the convenience of understanding of those skilled in the art, Figure 3 An exemplary logic diagram of a control method of a pumped storage unit based on real-time strategy verification for a power spot market is provided.

[0141] As Figure 3 As shown, it is first determined whether the control right is in dispatch, if not, control right verification (locking dispatch side instruction) is performed and local control is entered; if yes, control right verification (locking local manual operation) is first performed, then start-stop mode is confirmed, which is divided into remote start-stop (based on single machine remote start-stop instruction, and start-stop mode verification is clear that single machine planned curve does not participate in start-stop control) and curve start-stop (based on single machine planned curve, start-stop mode verification is clear that remote start-stop instruction issued by dispatch is not executed, and curve verification is performed to check whether operation / stop time, multi-unit start, working condition conflict, curve timeout, unit or curve state are abnormal or not); both modes enter start-stop control link (identify next time point unit state to start-stop, judge start-stop condition and grid connection requirement, and stop one by one when multiple units stop), then load setting value verification is performed, load adjustment is completed according to single machine remote instruction, and finally the process ends.

[0142] It should be understood that, although each step in the flowchart involved in each embodiment as described above is displayed in sequence according to the indication of the arrow, these steps are not necessarily executed in sequence according to the indication of the arrow. Unless explicitly stated herein, there is no strict sequence limitation for the execution of these steps, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0143] Based on the same inventive concept, the embodiments of the present application also provide a control device for pumped storage units based on real-time strategy verification for a power spot market, which is used to implement the control method of pumped storage units based on real-time strategy verification for a power spot market as described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, and therefore the specific limitations in one or more control device embodiments for pumped storage units based on real-time strategy verification for a power spot market provided below can be referred to the limitations for the control method of pumped storage units based on real-time strategy verification for a power spot market described above, which will not be described herein again.

[0144] In an exemplary embodiment, as Figure 4As shown, a control device of a pumped storage unit facing a real-time strategy verification based on a power spot market is provided, comprising:

[0145] The acquisition module 410 is configured to acquire permission information and mode information of the pumped storage unit; the permission information is used to represent a control subject to which a control permission of the pumped storage unit belongs, and the control subject includes a power dispatch center or a pumped storage power station; and the mode information is used to represent a start-stop mode of the pumped storage unit, and the start-stop mode includes a single remote start-stop mode or a planned curve start-stop mode.

[0146] The verification module 420 is configured to, in a case where the unit control instruction sent by the power dispatch center is received, verify the unit control instruction according to the permission information, the mode information and instruction information of the unit control instruction; and the unit control instruction includes a unit start-stop control instruction and a unit load regulation instruction.

[0147] The control module 430 is configured to, in a case where the unit start-stop control instruction is verified, perform start-stop control on the pumped storage unit according to the unit start-stop control instruction; and in a case where the unit load regulation instruction is verified, perform load regulation control on the pumped storage unit according to the unit load regulation instruction.

[0148] In one of the embodiments, the verification module 420 is specifically configured to, for the unit start-stop control instruction, verify whether the control subject represented by the permission information matches the power dispatch center; verify whether the start-stop mode indicated by the instruction information matches the start-stop mode represented by the mode information; in a case where the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are both the planned curve start-stop mode, verify the legality of a planned curve contained in the instruction information; and the planned curve includes start-stop states corresponding to each time point in a preset future time period.

[0149] In one of the embodiments, the verification module 420 is specifically configured to, for a single pumped storage unit, in a case where a unit planned shutdown time in the planned curve is less than a first time threshold, a unit running time after the unit is started is less than a second time threshold or a number of units started in a first preset time period exceeds a number threshold, determine that the planned curve does not have the legality; and for multiple pumped storage units, in a case where there are pump working loads and power generation working loads in each of the pumped storage units at the same time in a second preset time period, determine that the planned curve does not have the legality.

[0150] In one of the embodiments, the checking module 420 is specifically configured to, for the unit load adjustment instruction, determine that the unit load adjustment instruction passes the check in a case that the pumped storage unit is in the power generation state, and the load value indicated by the unit load adjustment instruction does not exceed the active adjustable limit value of the pumped storage unit; and determine that the unit load adjustment instruction passes the check in a case that the pumped storage unit is in the power generation state, and the deviation value between the load value indicated by the unit load adjustment instruction and the actual power generation power of the pumped storage unit does not exceed the deviation threshold value.

[0151] In one of the embodiments, the control module 430 is specifically configured to, in a case that the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are both the planned curve start-stop mode, perform start-stop control on the pumped storage unit according to the start-stop state corresponding to each time point in a preset future time period in the planned curve contained in the instruction information, and the preset start-stop advance time.

[0152] In one of the embodiments, the control module 430 is specifically configured to, in a case that the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are both the planned curve start-stop mode, and the pumped storage unit is started according to the planned curve contained in the instruction information, adjust the load of the pumped storage unit to the minimum load limit value; and adjust the load of the pumped storage unit according to the load adjustment value contained in the unit load adjustment instruction, with the minimum load limit value as the starting point.

[0153] The above-mentioned various modules in the control device for the pumped storage unit based on real-time strategy checking in the power spot market can be realized by software, hardware, and combinations thereof, in whole or in part. The above-mentioned various modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above-mentioned various modules.

[0154] In one exemplary embodiment, a computer device is provided, which can be any device in a monitoring system, such as a server, a remote communication, a local control unit, etc., and the internal structure diagram thereof can be as shown in Figure 5As shown in the figure. 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 the 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 capability. 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 unit data. 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 the terminal outside through the network connection. The computer program is executed by the processor to realize a control method of a pumped storage unit group facing a real-time strategy verification based on a power spot market.

[0155] Those skilled in the art can understand that, Figure 5 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0156] In one exemplary embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to realize the steps in each of the method embodiments described above.

[0157] In one embodiment, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by the processor to realize the steps in each of the method embodiments described above.

[0158] In one embodiment, a computer program product is provided, including a computer program, and the computer program is executed by the processor to realize the steps in each of the method embodiments described above.

[0159] 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. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, 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. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0160] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0161] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A control method for pumped storage units based on real-time strategy verification for the electricity spot market, characterized in that, The method includes: Obtain the permission information and mode information of the pumped storage unit; the permission information is used to characterize the control subject to which the control authority of the pumped storage unit belongs, and the control subject includes the power dispatch center or the pumped storage power station; the mode information is used to characterize the start-up and shutdown mode of the pumped storage unit, and the start-up and shutdown mode includes single remote start-up and shutdown mode or planned curve start-up and shutdown mode. Upon receiving a unit control command sent by the power dispatch center, the unit control command is verified based on the permission information, the mode information, and the command information of the unit control command; the unit control command includes unit start-stop control commands and unit load adjustment commands. If the unit start-stop control command passes the verification, the pumped storage unit is started and stopped in accordance with the unit start-stop control command. If the unit load adjustment command passes the verification, the pumped storage unit is subjected to load adjustment control according to the unit load adjustment command.

2. The method according to claim 1, characterized in that, The verification of the unit control commands includes: For the unit start-up and shutdown control commands, verify whether the control subject represented by the permission information matches the power dispatch center; Verify whether the start / stop mode indicated by the instruction information matches the start / stop mode represented by the mode information; If both the start / stop mode represented by the mode information and the start / stop mode indicated by the instruction information are the planned curve start / stop modes, verify the legality of the planned curve included in the instruction information; the planned curve includes the start / stop status corresponding to each time point within a preset future time period.

3. The method according to claim 2, characterized in that, The verification of the validity of the planned curve contained in the instruction information includes: For a single pumped storage unit, if the planned downtime of the unit is less than a first time threshold, the running time of the unit after startup is less than a second time threshold, or the number of units started within a first preset time period exceeds a quantity threshold, the planned curve is determined to be invalid. If, for multiple pumped storage units, pump load and power generation load exist simultaneously in each pumped storage unit within a second preset time period, the planned curve is determined to be invalid.

4. The method according to claim 1, characterized in that, The verification of the unit control commands includes: In response to the unit load adjustment command, if the pumped storage unit is in power generation mode and the load value indicated by the unit load adjustment command does not exceed the active power adjustable limit of the pumped storage unit, the unit load adjustment command is determined to pass the verification. If the pumped storage unit is in power generation mode and the deviation between the load value indicated by the unit load adjustment command and the actual power generation of the pumped storage unit does not exceed the deviation threshold, the unit load adjustment command is determined to have passed the verification.

5. The method according to claim 1, characterized in that, The step of controlling the start-up and shutdown of the pumped storage unit according to the unit start-up and shutdown control command includes: When both the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are the planned curve start-stop mode, the pumped storage unit is controlled to start and stop according to the start-stop status corresponding to each time point in the preset future time period in the planned curve included in the instruction information, and the preset start-stop advance time.

6. The method according to claim 1, characterized in that, The process of load regulation control of the pumped storage unit according to the unit load regulation command includes: When both the start-stop mode represented by the mode information and the start-stop mode indicated by the instruction information are the planned curve start-stop mode, and the pumped storage unit is started according to the planned curve contained in the instruction information, the load of the pumped storage unit is adjusted to the minimum load limit; according to the load adjustment value contained in the unit load adjustment instruction, the load of the pumped storage unit is adjusted with the minimum load limit as the starting point.

7. A control device for pumped storage units based on real-time strategy verification for the electricity spot market, characterized in that, The device includes: The acquisition module is used to acquire the permission information and mode information of the pumped storage unit; the permission information is used to identify the control subject to which the control authority of the pumped storage unit belongs, and the control subject includes the power dispatch center or the pumped storage power station; the mode information is used to identify the start-up and shutdown mode of the pumped storage unit, and the start-up and shutdown mode includes the single remote start-up and shutdown mode or the planned curve start-up and shutdown mode. The verification module is used to verify the unit control command based on the permission information, the mode information, and the command information of the unit control command when it receives the unit control command sent by the power dispatch center; the unit control command includes unit start-stop control command and unit load adjustment command. The control module is used to control the pumped storage unit to start and stop according to the unit start and stop control command when the unit start and stop control command passes the verification; and to control the pumped storage unit to adjust the load according to the unit load adjustment command when the unit load adjustment command passes the verification.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

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

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

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