CN110912190A - Black start method and device for pumped storage power station - Google Patents
Black start method and device for pumped storage power station Download PDFInfo
- Publication number
- CN110912190A CN110912190A CN201911218116.1A CN201911218116A CN110912190A CN 110912190 A CN110912190 A CN 110912190A CN 201911218116 A CN201911218116 A CN 201911218116A CN 110912190 A CN110912190 A CN 110912190A
- Authority
- CN
- China
- Prior art keywords
- power station
- pumping
- speed
- constant
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention provides a black start method and a black start device for a pumped storage power station, wherein the method comprises the following steps: after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one; if the constant-speed pumping and storing unit of the pumping and storing power station is judged and obtained to operate stably, starting the variable-speed pumping and storing unit of the pumping and storing power station one by one; and if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered. The device is used for executing the method. The black start method and the black start device for the pumped storage power station, provided by the embodiment of the invention, improve the stability of a power system in the black start process.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a black start method and a black start device for a pumped storage power station.
Background
At present, as the alternating current power grid in China is more and more complicated, the new energy access proportion is gradually improved, and the requirement on black start of the power grid is higher and higher.
In the prior art, black start of an electric power system is mostly concentrated on providing an off-line recovery strategy, that is, a black start strategy is prepared in advance when the electric power system is in normal operation, and operation is directly performed according to a predetermined plan when a power failure accident occurs. Because the power system is stopped during black start, the requirement on the stability of the starting process is extremely high, in the actual power system recovery process, the voltage, the current and the like in the power network are complicated to change, and once frequency instability occurs, overvoltage and overcurrent are easy to occur due to the fact that the primary frequency modulation speed is low, and finally black start failure is caused.
Therefore, how to provide a black start method based on the extraction power station, which can ensure the stability of the power system in the black start process, is an important issue to be solved in the field.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a black start method and a black start device for a pumped storage power station.
On one hand, the invention provides a black start method of a pumped storage power station, which comprises the following steps:
after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one;
if the constant-speed pumping and storing unit of the pumping and storing power station is judged and obtained to operate stably, starting the variable-speed pumping and storing unit of the pumping and storing power station one by one;
and if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered.
In another aspect, the present invention provides a black start apparatus for a pumped storage power station, including:
the first starting unit is used for starting the constant-speed pumping and storing units of the pumping and storing power station one by one after receiving the black start instruction;
the second starting unit is used for starting the variable-speed pumping unit of the pumping power station one by one after judging that the constant-speed pumping unit of the pumping power station operates stably;
and the power supply unit is used for supplying power to the interconnected power system after judging and knowing that the pumped storage power station operates stably.
In another aspect, the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the black start method of the pumped storage power station according to any of the above embodiments.
In yet another aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the black start method of the pumped storage power station according to any of the above embodiments.
According to the black start method and the black start device for the pumped storage power station, provided by the embodiment of the invention, after the black start instruction is received, the constant-speed pumped storage units of the pumped storage power station can be started one by one, then the variable-speed pumped storage units of the pumped storage power station are started one by one after the constant-speed pumped storage units of the pumped storage power station are judged and known to operate stably, and then the interconnected power system is supplied with power after the variable-speed pumped storage power station is judged and known to operate stably.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a flowchart illustrating a black start method of an pumped storage power station according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a black start method of an pumped storage power station according to another embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an electrical power system according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a black start device of an extraction power station according to an embodiment of the present invention.
Fig. 5 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In order to facilitate understanding of the technical solutions provided in the present application, the following briefly describes the research background of the technical solutions in the present application. The pumped storage power station (short for pumped storage power station) has the functions of peak regulation, valley filling, frequency modulation and accident standby, and is the main mode of high-capacity electric energy storage at present. On one hand, the power control device can provide rapid power support after a large-capacity power transmission channel fails; on the other hand, the method can reduce the wind and light abandonment amount of new energy, is an effective means for solving the peak shaving problem of the power system and ensuring the reliable operation of the power system, and is the most effective and economic means for solving the peak shaving problem of the power system and ensuring the safe and stable operation of the system at present and in a later period. The variable-speed pumping and storage unit has the bidirectional adjustable capacity of generating and pumping working conditions, is high in adjusting speed and is widely concerned. The pumped storage power station becomes an option of a black start energy source due to the self-starting capability. The embodiment of the invention provides a black start method of a pumped storage power station, which can realize power balance and frequency stability in time in the black start process of the pumped storage power station and has the advantages of high start speed and stable operation.
Fig. 1 is a schematic flow chart of a black start method of an extraction power station according to an embodiment of the present invention, and as shown in fig. 1, the black start method of the extraction power station according to the embodiment of the present invention includes:
s101, after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one;
specifically, after electric power system stopped the operation because of reasons such as trouble, in order to resume electric power system, can assign black start instruction to the control system of pumped storage power station, control system receives after black start instruction, can start one by one the constant speed pumped storage unit of pumped storage power station starts every constant speed pumped storage unit promptly in proper order, and under the drive of constant speed pumped storage unit prime mover, every constant speed pumped storage unit can start the operation. The pumping power station comprises a constant-speed pumping unit and a variable-speed pumping unit, the number of the constant-speed pumping unit and the number of the variable-speed pumping unit are set according to actual needs, and the embodiment of the invention is not limited. The black start instruction is preset.
S102, if the fact that the constant-speed pumping unit of the pumping power station runs stably is judged and known, starting the variable-speed pumping unit of the pumping power station one by one;
specifically, after all constant speed pumping units are started, if every constant speed pumping unit operates stably, a starting instruction of a variable speed pumping unit is sent out, the control system receives the starting instruction of the variable speed pumping unit and then starts the variable speed pumping unit of the pumping and storage power station one by one, namely, a circuit breaker of each variable speed pumping unit is closed in sequence, and the starting of each variable speed pumping unit is realized by supplying power to every variable speed pumping unit through the constant speed pumping unit of the pumping and storage power station. And judging whether each constant-speed pump-storage unit operates stably or not through the rotating speed, the terminal voltage and the power of each constant-speed pump-storage unit. The start command for the variable speed pumping unit is preset.
For example, if the rotation speed of the constant speed pump storage unit is greater than a first threshold, the terminal voltage of the constant speed pump storage unit is greater than a second threshold, and the power of the constant speed pump storage unit is greater than a third threshold, the constant speed pump storage unit operates stably. The first threshold, the second threshold, and the third threshold are set according to practical experience, which is not limited in the embodiments of the present invention.
And S103, if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered.
Specifically, after all variable speed pump storage units are started, if the operation of the pump storage power station is stable, the control system controls the pump storage power station to supply power to the interconnected power system, that is, the control system closes the external circuit breaker to charge the interconnected power system. The interconnected power system comprises but is not limited to a new energy system, a direct current system, an alternating current load and other systems which need external power supply to realize starting, and is connected with the pumped storage power station through an external circuit breaker. Whether the pumped storage power station operates stably can be judged through the bus voltage and the adjustable power of the pumped storage power station.
For example, if the bus voltage of the pumped storage power station is greater than a fourth threshold and the adjustable power of the pumped storage power station is greater than a fifth threshold, then the pumped storage power station operates stably. The fourth threshold and the fifth threshold are set according to practical experience, and the embodiment of the present invention is not limited.
According to the black start method of the pumped storage power station, provided by the embodiment of the invention, after the black start instruction is received, the constant-speed pumped storage units of the pumped storage power station can be started one by one, then the variable-speed pumped storage units of the pumped storage power station are started one by one after the constant-speed pumped storage units of the pumped storage power station are judged and known to operate stably, and then the interconnected power system is supplied with power after the variable-speed pumped storage power station is judged and known to operate stably. In addition, still have the ability of guaranteeing bus voltage stability, can guarantee to take out the frequency stability of storage power station to interconnected power system power supply process to can realize black start more steadily fast.
Fig. 2 is a schematic flow chart of a black start method of an extraction power station according to another embodiment of the present invention, and as shown in fig. 2, a flow chart of an embodiment of the black start method of an extraction power station according to the embodiment of the present invention is as follows:
the method comprises the following steps that firstly, after a control system of the pumping power station receives a black start instruction, a constant-speed pumping unit of the pumping power station is started. When the power system to which the pumped storage power station belongs is stopped, a worker of the pumped storage power station can send a black start instruction to a control system of the pumped storage power station, the control system can control the constant-speed pumped storage unit of the pumped storage power station to be started one by one after receiving the black start instruction, and the constant-speed pumped storage unit is started under the driving of a prime motor of the constant-speed pumped storage unit. The constant-speed pumping storage unit can be started automatically under the power generation working condition.
And secondly, judging whether the constant-speed pumping and storing unit of the pumping and storing power station runs stably by the control system. After all the constant-speed pumping units of the pumping power station are started, the control system judges whether the rotating speed of each constant-speed pumping unit is greater than a first threshold value, whether the terminal voltage is greater than a second threshold value and whether the power is greater than a third threshold value, if the rotating speed of each constant-speed pumping unit is greater than the first threshold value, and the terminal voltage is greater than the second threshold value and the power is greater than the third threshold value, the operation of the constant-speed pumping units of the pumping power station is stable, and then the third step is carried out; and if the rotating speed of any constant-speed pumping storage unit is less than or equal to a first threshold value, the terminal voltage is less than or equal to a second threshold value or the power is less than or equal to a third threshold value, the operation of the constant-speed pumping storage unit of the pumping storage power station is unstable, returning to the first step, and restarting the constant-speed pumping storage unit of the pumping storage power station.
And thirdly, starting the variable-speed pumping and storing unit of the pumping and storing power station by the control system. After the constant speed pumping unit of the pumping power station operates stably, the variable speed pumping unit of the pumping power station can be started by the constant speed pumping unit of the pumping power station. The variable speed pump storage unit can not realize self-starting, needs to be started by external power supply under the pumping working condition, and the constant speed pump storage unit of the pump storage power station is started completely and has voltage stabilization capability, and can continuously output the variable speed pump storage unit output power of the pump storage power station. The series resistor can be used for limiting the current in order to prevent the overcurrent of the variable speed pumping unit in the starting process.
And fourthly, judging whether the pumped storage power station operates stably by the control system. After all the variable-speed pumping units of the pumping power station are started, the control system judges whether the busbar voltage of the pumping power station is greater than a fourth threshold value and whether the adjustable power is greater than a fifth threshold value, if the busbar voltage of the pumping power station is greater than the fourth threshold value and the adjustable power is greater than the fifth threshold value, the pumping power station operates stably, and then the operation enters a fifth step; and if the bus voltage of the pumping power station is less than or equal to a fourth threshold value or the adjustable power is less than or equal to a fifth threshold value, the operation of the pumping power station is not stable, the third step is returned, and the variable-speed pumping unit of the pumping power station is restarted.
And fifthly, controlling the pumped storage power station to charge the interconnected power system by the control system. And the control system can close the external circuit breaker after judging that the pumped storage power station operates stably so as to charge the interconnected power system. Wherein, the interconnected power system can be at least one of a new energy system, a direct current system and an alternating current system. In the process of charging the interconnected power system, along with the increase of the charging power of the interconnected power system, the control system can start fixed frequency control on the variable-speed storage unit of the storage power station, and the pumping power of the storage power station is reduced to maintain the stability of the whole power system. When a new energy system or a direct current system is charged, the converter is charged firstly, the converter is unlocked after the new energy system or the direct current system is stabilized, and the current limiting resistor can be adopted to prevent overcurrent.
In the black start process, after the constant-speed pumping unit and the variable-speed pumping unit of the pumping power station are started, power balance is realized inside the pumping power station. When charging the interconnected power system, at first, variable speed pump storage unit work in the operating mode of drawing water, and constant speed pump storage unit work in power generation condition and operating range have the lower limit, and variable speed pump storage unit makes the operating range increase in pump storage power station. Meanwhile, the unbalanced power of the system is timely adjusted through the adjusting capacity of the variable-speed pumping storage unit under the pumping working condition, and the frequency stability of the alternating current bus is ensured, so that the stable and quick charging process is realized.
On the basis of the foregoing embodiments, further, if it is determined that the constant-speed pumping unit of the pumping power station operates stably, the method includes:
and if the rotating speed of each constant-speed pump storage unit is judged and obtained to be larger than a first threshold value, the terminal voltage is larger than a second threshold value, and the power is larger than a third threshold value, determining that the constant-speed pump storage unit of the pump storage power station runs stably.
Specifically, when the control system determines whether the operation of the constant-speed pumping unit of the pumping power station is stable, the control system may compare the rotation speed of each constant-speed pumping unit with a first threshold, compare the terminal voltage of each constant-speed pumping unit with a second threshold, and compare the power of each constant-speed pumping unit with a third threshold, and if the rotation speed of each constant-speed pumping unit is greater than the first threshold, the terminal voltage of each constant-speed pumping unit is greater than the second threshold, and the power of each constant-speed pumping unit is greater than the third threshold, it indicates that each constant-speed pumping unit operates stably, so as to determine that the constant-speed pumping unit of the pumping power station operates stably. The first threshold, the second threshold, and the third threshold are set according to practical experience, which is not limited in the embodiments of the present invention.
On the basis of the foregoing embodiments, further, the determining that the operation of the pumped storage power station is stable includes:
and if the bus voltage of the pumped storage power station is judged to be larger than a fourth threshold value and the adjustable power is larger than a fifth threshold value, determining that the pumped storage power station runs stably.
Specifically, when judging whether the operation of the extraction power station is stable, the control system may compare the busbar voltage of the extraction power station with a fourth threshold value, compare the adjustable power of the extraction power station with a fifth threshold value, and determine that the operation of the extraction power station is stable if the busbar voltage of the extraction power station is greater than the fourth threshold value and the adjustable power of the extraction power station is greater than the fifth threshold value. The fourth threshold and the fifth threshold are set according to practical experience, and the embodiment of the present invention is not limited.
On the basis of the above embodiments, further, the constant-speed pump storage unit adopts a synchronous motor and/or the variable-speed pump storage unit adopts a double-fed asynchronous motor.
Specifically, the constant-speed pumping and storage unit of the pumping and storage power station can adopt a synchronous motor, and can realize self-starting when being in a power generation working condition. The constant-speed pumping storage unit can adopt a double-fed asynchronous motor.
Fig. 3 is a schematic structural diagram of an electric power system according to an embodiment of the present invention, and as shown in fig. 3, the electric power system according to the embodiment of the present invention includes an extraction power station and a wind farm, the extraction power station includes 2 variable-speed extraction-storage machine groups G1 and G2, and 4 constant speed pumping storage units G3, G4, G5 and G6, wherein each constant speed pumping storage unit generates electricity and operates in a range of 100MW to 300MW, each variable speed pumping storage unit operates in a range of-300 MW to-150 MW, because the running range of 4 constant-speed pumping storage units is 100MW to 1200MW, after 2 variable-speed pumping storage units are added, the operating range of the entire station can be set between-500 MW and 1200MW, the power operation range of the pumped storage power station can be reduced to be below 0, namely the pumped storage power station can operate in an active power absorption state, the operation range of the pumped storage power station is expanded, and the pumped storage power station has quick adjustment capacity.
After the power system stops operating, the extraction power station may execute the black start method of the extraction power station provided by the embodiment of the present invention, including the following steps:
(1) after receiving a black start instruction, a control system of the extraction power station closes the constant-speed extraction unit outlet breakers S3, S4, S5 and S6 in sequence, starts the constant-speed extraction unit groups G3, G4, G5 and G6 one by one, and under the driving of a prime motor of the constant-speed extraction unit groups G3, G4, G5 and G6 are started in sequence and all work under the 120MW power generation working condition.
(2) After 4 constant speed pumping units are started and stably run, a starting instruction of the variable speed pumping unit is sent out, a control system of the pumping power station sequentially closes the variable speed pumping unit outlet breakers S1 and S2, the variable speed pumping unit is started by the constant speed pumping unit, and at the moment, the four constant speed pumping units respectively work in a 120MW power generation working condition. And adjusting the water turbines of 2 variable-speed pumping and storing units to ensure that the two variable-speed pumping and storing units work under the pumping working condition, and the pumping power is-240 MW, so that the power balance in the pumping and storing power station is realized. The output power of the variable-speed pumping unit can be continuously adjusted, and the current can be limited by series resistors when the variable-speed pumping unit is started.
(3) After 2 variable speed pumping and storage units are started and complete and the pumping and storage power station runs stably, external power supply trigger signals can be sent out, and after the control system receives the external power supply trigger signals, the external alternating current circuit breaker Sac is closed, so that the pumping and storage power station charges a wind field, and a fan unit which is gradually put into the wind field charges. When the fan sets are in an electric state and the active power to be absorbed is 50MW, for the extraction and storage power station, the two variable-speed extraction and storage power sets work under constant-frequency control, and in order to ensure stable frequency, the pumping power can be gradually changed from-240M to-215 MW along with the grid connection of the fan sets, so that the power supply of the fan sets is realized, and the starting process of the wind field is gradually completed. In the black start process, if the extraction and storage power station does not include the variable-speed extraction and storage unit, the lower limit of the operating power is 100MW, and the fan unit of the wind field cannot be started.
Fig. 4 is a schematic structural diagram of a black start apparatus of an extraction power station according to an embodiment of the present invention, and as shown in fig. 4, the black start apparatus of the extraction power station according to the embodiment of the present invention includes a first start unit 401, a second start unit 402, and a power supply unit 403, where:
the first starting unit 401 is configured to start the constant-speed pumped storage units of the pumped storage power station one by one after receiving the black start instruction; the second starting unit 402 is configured to start the variable-speed pumping units of the pumping power station one by one after determining that the constant-speed pumping units of the pumping power station operate stably; the power supply unit 403 is configured to supply power to the interconnected power system after determining that the pumped storage power station operates stably.
Specifically, after electric power system stopped because reasons such as trouble, in order to resume electric power system, can assign black start instruction to the first start unit 401 of pumped storage power station, first start unit 401 receives after black start instruction, can start one by one the constant speed pumped storage unit of pumped storage power station starts every constant speed pumped storage unit promptly in proper order, and under the drive of constant speed pumped storage unit prime mover, every constant speed pumped storage unit can start the operation. The pumping power station comprises a constant-speed pumping unit and a variable-speed pumping unit, the number of the constant-speed pumping unit and the number of the variable-speed pumping unit are set according to actual needs, and the embodiment of the invention is not limited. The black start instruction is preset.
After all constant speed pumping units are started, if each constant speed pumping unit operates stably, a starting instruction of a variable speed pumping unit is sent out, and after the second starting unit 402 receives the starting instruction of the variable speed pumping unit, the variable speed pumping unit of the pumping power station can be started one by one, namely, the circuit breaker of each variable speed pumping unit is closed in sequence, and the constant speed pumping unit of the pumping power station supplies power to each variable speed pumping unit to realize the starting of each variable speed pumping unit. And judging whether each constant-speed pump-storage unit operates stably or not through the rotating speed, the terminal voltage and the power of each constant-speed pump-storage unit. The start command for the variable speed pumping unit is preset.
After all the variable speed pumping units are started, if the pumping and storage power station operates stably, the power supply unit 403 controls the pumping and storage power station to supply power to the interconnected power system, that is, the control system closes the external circuit breaker to charge the interconnected power system. The interconnected power system comprises but is not limited to a new energy system, a direct current system, an alternating current load and other systems which need external power supply to realize starting, and is connected with the pumped storage power station through an external circuit breaker. Whether the pumped storage power station operates stably can be judged through the bus voltage and the adjustable power of the pumped storage power station.
The black start device of the pumped storage power station provided by the embodiment of the invention can start the constant-speed pumped storage units of the pumped storage power station one by one after receiving the black start instruction, then start the variable-speed pumped storage units of the pumped storage power station one by one after judging and knowing that the constant-speed pumped storage units of the pumped storage power station operate stably, and then supply power to the interconnected power system after judging and knowing that the pumped storage power station operates stably. In addition, still have the ability of guaranteeing bus voltage stability, can guarantee to take out the frequency stability of storage power station to interconnected power system power supply process to can realize black start more steadily fast.
On the basis of the foregoing embodiments, further, the second starting unit 402 is specifically configured to:
and after judging that the rotating speed of each constant-speed pumping storage unit is greater than a first threshold, the terminal voltage is greater than a second threshold and the power is greater than a third threshold, determining that the constant-speed pumping storage unit of the pumping storage power station runs stably.
Specifically, when determining whether the constant-speed pumping unit of the pumping power station operates stably, the second starting unit 402 may compare the rotation speed of each constant-speed pumping unit with a first threshold, compare the terminal voltage of each constant-speed pumping unit with a second threshold, compare the power of each constant-speed pumping unit with a third threshold, and if the rotation speed of each constant-speed pumping unit is greater than the first threshold, the terminal voltage of each constant-speed pumping unit is greater than the second threshold, and the power of each constant-speed pumping unit is greater than the third threshold, indicate that each constant-speed pumping unit operates stably, thereby determining that the constant-speed pumping unit of the pumping power station operates stably. The first threshold, the second threshold, and the third threshold are set according to practical experience, which is not limited in the embodiments of the present invention.
On the basis of the foregoing embodiments, further, the power supply unit 403 is specifically configured to:
and after the fact that the bus voltage of the pumped storage power station is larger than a fourth threshold value and the adjustable power is larger than a fifth threshold value is judged and obtained, the pumped storage power station is determined to be stable in operation.
Specifically, the power supply unit 403 may compare the busbar voltage of the extraction power station with a fourth threshold value and compare the adjustable power of the extraction power station with a fifth threshold value when determining whether the extraction power station operates stably, and determine that the extraction power station operates stably if the busbar voltage of the extraction power station is greater than the fourth threshold value and the adjustable power of the extraction power station is greater than the fifth threshold value. The fourth threshold and the fifth threshold are set according to practical experience, and the embodiment of the present invention is not limited.
On the basis of the above embodiments, further, the constant-speed pump storage unit adopts a synchronous motor and/or the variable-speed pump storage unit adopts a double-fed asynchronous motor.
Specifically, the constant-speed pumping and storage unit of the pumping and storage power station can adopt a synchronous motor, and can realize self-starting when being in a power generation working condition. The constant-speed pumping storage unit can adopt a double-fed asynchronous motor.
The embodiment of the apparatus provided in the embodiment of the present invention may be specifically configured to execute the processing flows of the above method embodiments, and the functions of the apparatus are not described herein again, and refer to the detailed description of the above method embodiments.
Fig. 5 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 5, the electronic device may include: a processor (processor)501, a communication Interface (Communications Interface)502, a memory (memory)503, and a communication bus 504, wherein the processor 501, the communication Interface 502, and the memory 503 are configured to communicate with each other via the communication bus 504. The processor 501 may call logic instructions in the memory 503 to perform the following method: after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one; if the constant-speed pumping and storing unit of the pumping and storing power station is judged and obtained to operate stably, starting the variable-speed pumping and storing unit of the pumping and storing power station one by one; and if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered.
In addition, the logic instructions in the memory 503 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method provided by the above-mentioned method embodiments, for example, comprising: after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one; if the constant-speed pumping and storing unit of the pumping and storing power station is judged and obtained to operate stably, starting the variable-speed pumping and storing unit of the pumping and storing power station one by one; and if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered.
The present embodiment provides a computer-readable storage medium, which stores a computer program, where the computer program causes the computer to execute the method provided by the above method embodiments, for example, the method includes: after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one; if the constant-speed pumping and storing unit of the pumping and storing power station is judged and obtained to operate stably, starting the variable-speed pumping and storing unit of the pumping and storing power station one by one; and if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In the description herein, reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A black start method of a pumped storage power station, comprising:
after receiving a black start instruction, starting the constant-speed pumping and storing units of the pumping and storing power station one by one;
if the constant-speed pumping and storing unit of the pumping and storing power station is judged and obtained to operate stably, starting the variable-speed pumping and storing unit of the pumping and storing power station one by one;
and if the pumped storage power station is judged to be stable in operation, the interconnected power system is powered.
2. The method of claim 1, wherein the determining that the constant speed pumped storage unit of the pumped storage power station is operating stably comprises:
and if the rotating speed of each constant-speed pump storage unit is judged and obtained to be larger than a first threshold value, the terminal voltage is larger than a second threshold value, and the power is larger than a third threshold value, determining that the constant-speed pump storage unit of the pump storage power station runs stably.
3. The method of claim 1, wherein determining that the pumped storage power plant is operating stably comprises:
and if the bus voltage of the pumped storage power station is judged to be larger than a fourth threshold value and the adjustable power is larger than a fifth threshold value, determining that the pumped storage power station runs stably.
4. The method of claim 1 wherein the fixed speed pump-storage unit employs a synchronous machine and/or the variable speed pump-storage unit employs a doubly-fed asynchronous machine.
5. A black start device of a pumped storage power station, comprising:
the first starting unit is used for starting the constant-speed pumping and storing units of the pumping and storing power station one by one after receiving the black start instruction;
the second starting unit is used for starting the variable-speed pumping unit of the pumping power station one by one after judging that the constant-speed pumping unit of the pumping power station operates stably;
and the power supply unit is used for supplying power to the interconnected power system after judging and knowing that the pumped storage power station operates stably.
6. The apparatus according to claim 5, wherein the second activating unit is specifically configured to:
and after judging that the rotating speed of each constant-speed pumping storage unit is greater than a first threshold, the terminal voltage is greater than a second threshold and the power is greater than a third threshold, determining that the constant-speed pumping storage unit of the pumping storage power station runs stably.
7. The apparatus according to claim 5, wherein the power supply unit is specifically configured to:
and after the fact that the bus voltage of the pumped storage power station is larger than a fourth threshold value and the adjustable power is larger than a fifth threshold value is judged and obtained, the pumped storage power station is determined to be stable in operation.
8. An arrangement according to any one of claims 5 to 7, wherein the fixed speed pump bank employs a synchronous machine and/or the variable speed pump bank employs a doubly-fed asynchronous machine.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 4 are implemented when the computer program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218116.1A CN110912190B (en) | 2019-12-03 | 2019-12-03 | Black start method and device for pumped storage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218116.1A CN110912190B (en) | 2019-12-03 | 2019-12-03 | Black start method and device for pumped storage power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110912190A true CN110912190A (en) | 2020-03-24 |
| CN110912190B CN110912190B (en) | 2022-03-04 |
Family
ID=69821600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911218116.1A Active CN110912190B (en) | 2019-12-03 | 2019-12-03 | Black start method and device for pumped storage power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110912190B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383466A (en) * | 2011-11-10 | 2012-03-21 | 渤海大学 | High-efficiency cluster type water pump system with constant pressure and variable flow and operation control method |
| CN102522816A (en) * | 2011-12-31 | 2012-06-27 | 四川中鼎智能技术有限公司 | Implementation method for DC inversion of black start of hydraulic power plant |
| CN106849811A (en) * | 2017-01-10 | 2017-06-13 | 国电南瑞科技股份有限公司 | A kind of water-storage variable units pump operating condition self-starting control device and its method |
| CN107911054A (en) * | 2017-12-01 | 2018-04-13 | 许继电气股份有限公司 | A kind of speed change pump-storage generator AC excitation system and unit self-start method |
| CN108448634A (en) * | 2018-04-28 | 2018-08-24 | 乌江渡发电厂 | A kind of long-range key black starting-up control method of Hydropower Unit |
| JP2019127845A (en) * | 2018-01-22 | 2019-08-01 | 株式会社荏原製作所 | Pump unit |
-
2019
- 2019-12-03 CN CN201911218116.1A patent/CN110912190B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383466A (en) * | 2011-11-10 | 2012-03-21 | 渤海大学 | High-efficiency cluster type water pump system with constant pressure and variable flow and operation control method |
| CN102522816A (en) * | 2011-12-31 | 2012-06-27 | 四川中鼎智能技术有限公司 | Implementation method for DC inversion of black start of hydraulic power plant |
| CN106849811A (en) * | 2017-01-10 | 2017-06-13 | 国电南瑞科技股份有限公司 | A kind of water-storage variable units pump operating condition self-starting control device and its method |
| CN107911054A (en) * | 2017-12-01 | 2018-04-13 | 许继电气股份有限公司 | A kind of speed change pump-storage generator AC excitation system and unit self-start method |
| JP2019127845A (en) * | 2018-01-22 | 2019-08-01 | 株式会社荏原製作所 | Pump unit |
| CN108448634A (en) * | 2018-04-28 | 2018-08-24 | 乌江渡发电厂 | A kind of long-range key black starting-up control method of Hydropower Unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110912190B (en) | 2022-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108110799B (en) | Virtual synchronous control method and device for high-voltage direct current grid connection of island double-fed wind power plant | |
| CN109066770B (en) | Control method and device for accessing wind power to flexible direct current power transmission system | |
| CN104158202B (en) | A kind of hybrid energy-storing stabilizes wind power wave propagation system and control method for coordinating thereof | |
| EP2315345A2 (en) | Grid fault ride-through for current source converter-based wind energy conversion systems | |
| CN109361233B (en) | Dynamic process modeling method for output power of double-fed variable-speed pumped storage power station | |
| CN108631333A (en) | A kind of wind storage joint frequency modulation control method based on limit direct torque | |
| CN112865138B (en) | Energy storage primary frequency modulation control method and device for power system | |
| CN109768582A (en) | A kind of virtual synchronous generator control method under multi-constraint condition | |
| CN107850045B (en) | Make the power ramp in wind turbine according to the available wind power of estimation | |
| CN111817338B (en) | Black-start control method and system for wind-solar new energy power station | |
| CN113162073B (en) | Wind turbine generator and energy storage coordinated frequency modulation control method and system | |
| CN110912190B (en) | Black start method and device for pumped storage power station | |
| CN204498036U (en) | A kind of excitation unit of double-fed wind power generator | |
| CN116345530A (en) | Wind generating set variable-current control method, device, equipment and wind generating system | |
| CN114362261B (en) | Control mode switching method, system and equipment for full-power variable-speed constant-frequency pumping and storage unit | |
| CN109995281B (en) | Control method and device for fault recovery of wind turbine generator and readable storage medium | |
| CN114285049A (en) | Control method for power type capacitor cooperated PMSG fan to participate in primary frequency modulation | |
| CN111030159B (en) | Photovoltaic virtual synchronous generator control method and system | |
| CN113852099A (en) | Quick frequency response control system and method for direct-drive wind turbine generator | |
| CN114303295A (en) | Frequency support from power plants using power storage units | |
| Chen et al. | A Decentralized Adaptive SOC Balancing Strategy in VSG-based Islanded Power System | |
| CN111864783A (en) | Direct-current short-circuit fault ride-through control method and related device | |
| CN111769569B (en) | Control method, device and system for phase modulator of extra-high voltage direct current transmitting end converter station | |
| Jadeja et al. | Synthetic/virtual Inertia in Renewable Energy Sourced Grid: A Review | |
| CN115693724B (en) | Control method for double grid-connected mode variable speed constant frequency pumped storage power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |