CN117318070A - Load shedding control method and device for power equipment of pumping and accumulating plant and load shedding control equipment - Google Patents
Load shedding control method and device for power equipment of pumping and accumulating plant and load shedding control equipment Download PDFInfo
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- CN117318070A CN117318070A CN202311607203.2A CN202311607203A CN117318070A CN 117318070 A CN117318070 A CN 117318070A CN 202311607203 A CN202311607203 A CN 202311607203A CN 117318070 A CN117318070 A CN 117318070A
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- 238000005086 pumping Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims abstract description 39
- 230000009471 action Effects 0.000 claims description 23
- 238000004590 computer program Methods 0.000 claims description 21
- 230000005284 excitation Effects 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 6
- 238000000605 extraction Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
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Classifications
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- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/52—The controlling of the operation of the load not being the total disconnection of the load, i.e. entering a degraded mode or in current limitation
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The application relates to the technical field of power plant control, and provides a load shedding control method and device for power plant equipment and load shedding control equipment. The method comprises the following steps: monitoring whether a high-voltage bus between a high-voltage main power supply and a transformer loses voltage or not; if the high-voltage bus is out of voltage, starting a first load shedding control, starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply, and not supplying power for non-important electric equipment; if the high-voltage bus is not in voltage loss, monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is in voltage loss; if any low-voltage bus loses voltage, acquiring the starting condition of a low-voltage standby power supply associated with any low-voltage main power supply; if the low-voltage standby power supply is not started, the second load shedding control is started, the power supply of the non-pumping and accumulating plant is started to supply power to any important electric equipment associated with the low-voltage main power supply, and the power supply does not supply power to the non-important electric equipment. By adopting the method, the power supply of important electric equipment can be ensured when the standby power supply is started.
Description
Technical Field
The application relates to the technical field of power plant control, in particular to a load shedding control method and device of power plant equipment, and a load shedding control device, a storage medium and a computer program product of the power plant equipment.
Background
When the main power supply of the pumping and storage plant is lost due to equipment failure, power distribution system failure, accidents and the like and cannot supply power to electric equipment of the pumping and storage plant, the standby power supply can be started to supply power to the electric equipment of the pumping and storage plant.
At present, when the standby power supply is started to supply power, the standby power supply is started to supply power to all electric equipment of a pumping and accumulating plant, and the guarantee of important electric equipment is insufficient.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a load shedding control method and apparatus for a power extraction and storage plant, a load shedding control device for a power extraction and storage plant, a computer readable storage medium, and a computer program product.
In a first aspect, the present application provides a load shedding control method for a pumping and accumulating station service electrical device, where a high-voltage main power supply is converted into a plurality of low-voltage main power supplies through a transformer, and each low-voltage main power supply supplies power to an electrical device associated with the low-voltage main power supply; the method comprises the following steps:
monitoring whether a high-voltage bus between the high-voltage main power supply and the transformer is out of voltage or not;
if the high-voltage bus is out of voltage, starting first load shedding control, and starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply under the first load shedding control, wherein the power supply does not supply power for non-important electric equipment;
if the high-voltage bus is not in voltage loss, monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is in voltage loss;
if any low-voltage bus loses voltage, acquiring the starting condition of a low-voltage standby power supply associated with any low-voltage main power supply;
and if the low-voltage standby power supply is not started, starting second load shedding control, and starting the power supply in the non-pumping and accumulating plant to supply power for the important electric equipment associated with any low-voltage main power supply under the second load shedding control, so as not to supply power for the non-important electric equipment.
In one embodiment, the monitoring whether the high-voltage bus between the high-voltage main power supply and the transformer is out of voltage includes:
acquiring the action condition of a high-voltage relay associated with the high-voltage bus;
and judging whether the high-voltage bus is out of voltage according to the action condition of the high-voltage relay.
In one embodiment, the determining, according to the action condition of the high-voltage relay, whether the high-voltage bus is out of voltage includes:
when the high-voltage relay is in a loss-of-excitation state, determining that the high-voltage bus is in a loss-of-voltage state;
and when the high-voltage relay is in an excitation state, determining that the high-voltage bus is not out of voltage.
In one embodiment, the monitoring whether the high-voltage bus between the high-voltage main power supply and the transformer is out of voltage includes:
monitoring whether a high-voltage main bus between the high-voltage main power supply and the transformer is out of voltage or not;
if the high-voltage main bus is out of voltage, monitoring whether a high-voltage standby bus between the high-voltage main power supply and the transformer is out of voltage or not;
and judging whether the high-voltage bus is out of voltage according to whether the high-voltage standby bus is out of voltage.
In one embodiment, the monitoring whether the low-voltage bus between each low-voltage main power supply and its associated electric equipment is out of voltage includes:
acquiring the action condition of a low-voltage relay associated with the low-voltage bus;
and judging whether the low-voltage bus is out of voltage according to the action condition of the low-voltage relay.
In one embodiment, after initiating the first load shedding control, the method further comprises:
and under the condition that the number of the high-voltage buses is multiple, when multiple sections of the high-voltage buses are powered again, the power supply of the non-important electric equipment associated with each low-voltage main power supply is recovered based on the high-voltage main power supply.
In one embodiment, after initiating the second load shedding control, the method further comprises:
and under the condition that the number of the low-voltage buses is multiple, when any section of the low-voltage buses is powered back, the power supply of the non-important electric equipment associated with any low-voltage main power supply is recovered based on any low-voltage main power supply.
In a second aspect, the present application further provides a load shedding control device for a pumping and accumulating station service electrical apparatus, where a high-voltage main power supply is converted into a plurality of low-voltage main power supplies through a transformer, and each low-voltage main power supply supplies power to an electrical apparatus associated with the low-voltage main power supply; the device comprises:
the high-voltage bus monitoring module is used for monitoring whether the high-voltage bus between the high-voltage main power supply and the transformer loses voltage or not;
the first load shedding control module is used for starting first load shedding control if the high-voltage bus loses voltage, and starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply under the first load shedding control, so as not to supply power for non-important electric equipment;
the low-voltage bus monitoring module is used for monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is out of voltage or not if the high-voltage bus is not out of voltage;
the starting condition acquisition module is used for acquiring the starting condition of the low-voltage standby power supply associated with any low-voltage main power supply if any low-voltage bus loses voltage;
and the second load shedding control module starts second load shedding control if the low-voltage standby power supply is not started, and starts the power supply in the non-pumping and accumulating plant to supply power for the important electric equipment associated with any low-voltage main power supply under the second load shedding control, so as not to supply power for the non-important electric equipment.
In a third aspect, the application further provides load shedding control equipment of the pumping and accumulating station service electrical equipment. The load shedding control device of the pumping and accumulating plant power equipment comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the method.
In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium has stored thereon a computer program which is executed by a processor to perform the above method.
In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which is executed by a processor to perform the above method.
According to the load shedding control method and device for the pumping and accumulating equipment, the load shedding control equipment, the storage medium and the computer program product of the pumping and accumulating equipment, whether the high-voltage bus between the high-voltage main power supply and the transformer is out of voltage is monitored; if the high-voltage bus is out of voltage, starting first load shedding control, and under the first load shedding control, starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply, and not supplying power for non-important electric equipment; if the high-voltage bus is not in voltage loss, monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is in voltage loss; if any low-voltage bus loses voltage, acquiring the starting condition of a low-voltage standby power supply associated with any low-voltage main power supply; and if the low-voltage standby power supply is not started, starting second load shedding control, and starting the power supply in the non-pumping and accumulating plant to supply power for any important electric equipment associated with the low-voltage main power supply under the second load shedding control, so as not to supply power for the non-important electric equipment. The scheme selectively supplies power to important electric equipment, does not supply power to non-important electric equipment, ensures effective supply of a standby power supply, and ensures power supply of the important electric equipment when the standby power supply is started.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.
FIG. 1 is an application environment diagram of a load shedding control method of a pumping and accumulating station service electrical device in one embodiment;
FIG. 2 is a schematic flow chart of a load shedding control method of a pumping and accumulating station service device in an embodiment;
FIG. 3 is a schematic flow chart of determining whether a high voltage bus is out of voltage in one embodiment;
FIG. 4 is a block diagram of a load shedding control device of a pumping and accumulating station service electrical equipment in one embodiment;
fig. 5 is an internal structural diagram of a load shedding control device of the pumping and accumulating station service equipment in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.
The load shedding control method for the power extraction and storage equipment provided by the embodiment of the application can be applied to an application environment shown in fig. 1. The load shedding control equipment of the pumping and accumulating station service power equipment monitors whether a high-voltage bus between a high-voltage main power supply and a transformer loses voltage or not; if the high-voltage bus is out of voltage, starting first load shedding control, and under the first load shedding control, starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply, and not supplying power for non-important electric equipment; if the high-voltage bus is not in voltage loss, monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is in voltage loss; if any low-voltage bus loses voltage, acquiring the starting condition of a low-voltage standby power supply associated with any low-voltage main power supply; and if the low-voltage standby power supply is not started, starting second load shedding control, and starting the power supply in the non-pumping and accumulating plant to supply power for any important electric equipment associated with the low-voltage main power supply under the second load shedding control, so as not to supply power for the non-important electric equipment.
In an exemplary embodiment, as shown in fig. 2, a load shedding control method of a power extraction plant is provided, and an example of application of the method to the load shedding control device of the power extraction plant in fig. 1 is described, which includes the following steps S201 to S205.
Step S201, whether the high-voltage bus between the high-voltage main power supply and the transformer is out of voltage is monitored.
The high-voltage bus supplies power for electric equipment of the pumping and accumulating plant, and the high-voltage bus between the high-voltage main power supply and the transformer can be divided into multiple sections. When the high-voltage bus is out of voltage, the high-voltage main power supply cannot normally supply power to electric equipment associated with each low-voltage main power supply, and when the high-voltage bus is not out of voltage, the high-voltage main power supply can normally supply power to the electric equipment associated with each low-voltage main power supply.
In the step, the load shedding control device of the power extraction and storage station service equipment judges whether the high-voltage main power supply can normally supply power to the electric equipment associated with each low-voltage main power supply according to the voltage loss condition of the high-voltage bus through monitoring whether the high-voltage bus between the high-voltage main power supply and the transformer is out of voltage.
Step S202, if the high-voltage bus is out of voltage, starting first load shedding control, and under the first load shedding control, starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply, and not supplying power for non-important electric equipment.
When the high-voltage bus is out of voltage, the high-voltage main power supply, such as a 6KV main power supply, cannot normally supply power to electric equipment of the pumping and storage plant, and a high-voltage standby power supply, such as a 6KV emergency diesel generator, needs to be started to supply power to the electric equipment of the pumping and storage plant; in order to ensure the power supply of important electric equipment, the load shedding of the power supply of the electric equipment can be carried out after the high-voltage standby power supply is started, specifically, the power supply of the important electric equipment associated with each low-voltage main power supply can be carried out, and the power supply of the non-important electric equipment associated with each low-voltage main power supply is not carried out. To distinguish from the load shedding control at the time of the low-voltage bus loss in voltage, the load shedding control at the time of the high-voltage bus loss in voltage may be referred to as a first load shedding control.
In the step, when the high-voltage bus loses voltage, the first load shedding control is started, and under the first load shedding control, the high-voltage standby power supply is started to supply power to important electric equipment associated with each low-voltage main power supply, so that power is not supplied to non-important electric equipment, and the power supply of the important electric equipment is ensured.
And step S203, if the high-voltage bus is not in voltage loss, monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is in voltage loss.
When the high-voltage bus is not in voltage loss, the high-voltage main power supply can normally supply power to the electric equipment associated with each low-voltage main power supply, and when the condition that the low-voltage main power supply such as 400V main power supply cannot normally supply power to the electric equipment associated with the low-voltage main power supply exists, whether the low-voltage bus between each low-voltage main power supply and the electric equipment associated with the low-voltage main power supply is in voltage loss is also required to be monitored, and whether each low-voltage main power supply can normally supply power to the electric equipment associated with the low-voltage main power supply is judged according to whether the low-voltage bus is in voltage loss.
In the step, when the high-voltage bus is not in voltage loss, the load shedding control equipment of the power equipment for the pumping and accumulating plant judges whether each low-voltage main power supply can normally supply power for the power equipment associated with the power equipment by monitoring whether the low-voltage bus between each low-voltage main power supply and the power equipment associated with the power equipment is in voltage loss or not according to the voltage loss condition of the low-voltage bus.
Step S204, if any low-voltage bus loses voltage, the starting condition of the low-voltage standby power supply associated with any low-voltage main power supply is obtained.
When any low-voltage bus loses voltage, the low-voltage main power supply corresponding to the bus cannot normally supply power to the electric equipment associated with the bus, and at the moment, the low-voltage standby power supply associated with the low-voltage main power supply, such as a 400V emergency diesel generator, is generally started to supply power to the electric equipment associated with the low-voltage main power supply.
Therefore, in the step, when any low-voltage bus loses voltage, the starting condition of the low-voltage standby power supply related to the low-voltage main power supply is acquired again so as to judge whether the power supply of the electric equipment related to the low-voltage main power supply is normal.
Step S205, if the low-voltage standby power supply is not started, the second load shedding control is started, and under the second load shedding control, the power supply in the non-pumping and accumulating plant is started to supply power for any important electric equipment associated with the low-voltage main power supply, and the power supply is not supplied to the non-important electric equipment.
When the low-voltage standby power supply is not started, the abnormal power supply of the electric equipment related to the low-voltage main power supply is characterized, the load shedding of the power supply of the electric equipment can be performed at the moment, the power supply of the important electric equipment related to the low-voltage main power supply is not performed, the power supply of the non-important electric equipment related to the low-voltage main power supply is not performed, and the power supply of the important electric equipment related to the low-voltage main power supply can be ensured. To distinguish from the load shedding control at the time of the high-voltage bus loss in voltage, the load shedding control at the time of the low-voltage bus loss in voltage may be referred to as a second load shedding control.
In the load shedding control method of the power extraction and storage plant power equipment, the important power equipment is selectively powered, the non-important power equipment is not powered, the effective supply of the standby power supply is ensured, and the power supply of the important power equipment is ensured when the standby power supply is started.
In one embodiment, whether the high-voltage bus between the high-voltage main power supply and the transformer is in voltage loss or not is specifically determined by the following steps: acquiring the action condition of a high-voltage relay associated with a high-voltage bus; and judging whether the high-voltage bus loses voltage according to the action condition of the high-voltage relay.
The action condition of the high-voltage relay related to the high-voltage bus can reflect the voltage loss condition of the high-voltage bus, when the high-voltage relay is in a loss-of-excitation state, the voltage loss of the high-voltage bus can be determined, and when the high-voltage relay is in an excitation state, the voltage loss of the high-voltage bus can be determined. The load shedding control equipment of the power equipment for the pumping and accumulating plant can monitor the voltage loss condition of the high-voltage bus by monitoring the action condition of the high-voltage relay.
In one embodiment, according to the action condition of the high-voltage relay, whether the high-voltage bus is out of voltage is judged, and the specific steps are as follows: when the high-voltage relay is in a loss-of-magnetic state, determining that the high-voltage bus is in a loss-of-voltage state; when the high-voltage relay is in an excitation state, the high-voltage bus is determined not to lose voltage.
Under the condition that the number of the high-voltage buses is multiple, a total high-voltage relay can be arranged to reflect the voltage loss condition of the high-voltage buses, when the high-voltage relays corresponding to the multiple high-voltage buses are all out of magnetization, the total high-voltage relay is out of magnetization, and then the voltage loss of the high-voltage buses can be determined; when the high-voltage relay corresponding to any section of high-voltage bus is excited, the total high-voltage relay is excited, and the high-voltage bus can be determined not to lose voltage.
In one embodiment, whether the high-voltage bus between the high-voltage main power supply and the transformer is out of voltage is monitored, and the specific steps are shown in fig. 3, step S301, whether the high-voltage main bus between the high-voltage main power supply and the transformer is out of voltage is monitored; step S302, if the high-voltage main bus loses voltage, whether the high-voltage standby bus between the high-voltage main power supply and the transformer loses voltage is monitored; step S303, judging whether the high-voltage bus is out of voltage according to whether the high-voltage standby bus is out of voltage.
When the high-voltage bus between the high-voltage main power supply and the transformer comprises a high-voltage main bus and a high-voltage standby bus, the high-voltage main bus is characterized in that the high-voltage main bus cannot normally supply power to electric equipment associated with each low-voltage main power supply when the high-voltage main bus between the high-voltage main power supply and the transformer is in voltage loss, the high-voltage standby bus can be utilized to normally supply power to the electric equipment associated with each low-voltage main power supply, so that whether the high-voltage standby bus is in voltage loss can be further monitored when the high-voltage main bus is in voltage loss, if the high-voltage standby bus is in voltage loss, the high-voltage standby bus is characterized in that the high-voltage standby bus cannot normally supply power to the electric equipment associated with each low-voltage main power supply, and the high-voltage bus can be determined.
In this embodiment, whether the high-voltage main bus between the high-voltage main power supply and the transformer is out of voltage is monitored first, if the high-voltage main bus is out of voltage, whether the high-voltage standby bus between the high-voltage main power supply and the transformer is out of voltage is monitored, and finally whether the high-voltage bus is out of voltage is judged according to whether the high-voltage standby bus is out of voltage, so that load shedding control logic of the power equipment of the pumping and storage plant is optimized.
In one embodiment, whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment loses voltage is monitored, and the specific steps are as follows: acquiring the action condition of a low-voltage relay associated with a low-voltage bus; and judging whether the low-voltage bus loses voltage according to the action condition of the low-voltage relay.
The action condition of the low-voltage relay related to the low-voltage bus can reflect the voltage loss condition of the low-voltage bus, when the low-voltage relay is in a loss-of-excitation state, the voltage loss of the low-voltage bus can be determined, and when the low-voltage relay is in an excitation state, the voltage loss of the low-voltage bus can be determined. The load shedding control equipment of the power equipment for the pumping and storage plant can monitor the voltage loss condition of the low-voltage bus by monitoring the action condition of the low-voltage relay.
In one embodiment, after the first load shedding control is started, the method provided by the application further includes: under the condition that the number of the high-voltage buses is multiple, when the multiple high-voltage buses are powered again, the power supply of the non-important electric equipment related to each low-voltage main power supply is recovered based on the high-voltage main power supply.
Under the condition that the number of the high-voltage buses is multiple, when the multiple high-voltage buses are powered on, the high-voltage main power supply can normally supply power to electric equipment associated with each low-voltage main power supply, at the moment, the first load shedding control can be stopped, the high-voltage main power supply is started to supply power to the electric equipment associated with each low-voltage main power supply, and the power supply to the non-important electric equipment associated with each low-voltage main power supply is recovered through different delays.
In one embodiment, after initiating the second load shedding control, the method provided by the present application further comprises: and under the condition that the number of the low-voltage buses is multiple, when any section of low-voltage buses is powered back, the power supply to the non-important electric equipment associated with any low-voltage main power supply is recovered based on any low-voltage main power supply.
Under the condition that the number of the low-voltage buses is multiple, when any low-voltage bus is powered on, the low-voltage main power supply can normally supply power to the associated electric equipment, the second load shedding control can be stopped, the low-voltage main power supply is started to supply power to the associated electric equipment, and the power supply to the non-important electric equipment associated with the low-voltage main power supply is recovered through different delays.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a load shedding control device of the power extraction and storage equipment, which is used for realizing the load shedding control method of the power extraction and storage equipment. The implementation scheme of the device for solving the problem is similar to the implementation scheme recorded in the method, so the specific limitation in the embodiment of the load shedding control device of one or more pumping and accumulating power plant equipment provided below can be referred to the limitation of the load shedding control method of the pumping and accumulating power plant equipment hereinabove, and the description is omitted here.
In an exemplary embodiment, as shown in fig. 4, there is provided a load shedding control device of an electric pumping and accumulating plant, wherein:
the high-voltage bus monitoring module 401 is configured to monitor whether a high-voltage bus between the high-voltage main power supply and the transformer is out of voltage;
the first load shedding control module 402 is configured to, if the high-voltage bus loses voltage, start first load shedding control, and under the first load shedding control, enable a high-voltage standby power supply to supply power to important electric equipment associated with each low-voltage main power supply, and not supply power to non-important electric equipment;
a low-voltage bus monitoring module 403, configured to monitor whether the low-voltage bus between each low-voltage main power supply and its associated electric device is out of voltage if the high-voltage bus is not out of voltage;
the starting condition obtaining module 404 is configured to obtain a starting condition of a low-voltage standby power supply associated with any low-voltage main power supply if any low-voltage bus loses voltage;
and the second load shedding control module 405 starts second load shedding control if the low-voltage standby power supply is not started, and starts the power supply in the non-pumping and accumulating plant to supply power for the important electric equipment associated with any low-voltage main power supply under the second load shedding control, and does not supply power for the non-important electric equipment.
In one embodiment, the high voltage bus monitoring module 401 is further configured to: acquiring the action condition of a high-voltage relay associated with the high-voltage bus; and judging whether the high-voltage bus is out of voltage according to the action condition of the high-voltage relay.
In one embodiment, the high voltage bus monitoring module 401 is further configured to: when the high-voltage relay is in a loss-of-excitation state, determining that the high-voltage bus is in a loss-of-voltage state; and when the high-voltage relay is in an excitation state, determining that the high-voltage bus is not out of voltage.
In one embodiment, the high voltage bus monitoring module 401 is further configured to: monitoring whether a high-voltage main bus between the high-voltage main power supply and the transformer is out of voltage or not; if the high-voltage main bus is out of voltage, monitoring whether a high-voltage standby bus between the high-voltage main power supply and the transformer is out of voltage or not; and judging whether the high-voltage bus is out of voltage according to whether the high-voltage standby bus is out of voltage.
In one embodiment, low voltage bus monitoring module 403 is further configured to: acquiring the action condition of a low-voltage relay associated with the low-voltage bus; and judging whether the low-voltage bus is out of voltage according to the action condition of the low-voltage relay.
In one embodiment, after the first load shedding control is initiated, the apparatus further comprises a load shedding reset module for: and under the condition that the number of the high-voltage buses is multiple, when multiple sections of the high-voltage buses are powered again, the power supply of the non-important electric equipment associated with each low-voltage main power supply is recovered based on the high-voltage main power supply.
In one embodiment, after initiating the second load shedding control, the apparatus further comprises a load shedding reset module for: and under the condition that the number of the low-voltage buses is multiple, when any section of the low-voltage buses is powered back, the power supply of the non-important electric equipment associated with any low-voltage main power supply is recovered based on any low-voltage main power supply.
All or part of each module in the load shedding control device of the pumping and accumulating plant power equipment can be realized by software, hardware and a combination thereof. The modules can be embedded in a processor in the load shedding control device of the power extraction and storage plant equipment in a hardware mode or can be stored in a memory in the load shedding control device of the power extraction and storage plant equipment in a software mode so that the processor can call and execute operations corresponding to the modules.
In an exemplary embodiment, a load shedding control device of a pumping and accumulating plant power equipment is provided, and an internal structure diagram of the load shedding control device can be shown in fig. 5. The load shedding control device of the pumping and accumulating station service electrical equipment comprises a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. The processor of the load shedding control device of the pumping and accumulating plant power equipment is used for providing calculation and control capability. The memory of the load shedding control device of the pumping and accumulating station service electrical equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the load shedding control device of the pumping and accumulating plant power equipment is used for storing data of the load shedding control device of the pumping and accumulating plant power equipment. The input/output interface of the load shedding control device of the pumping and accumulating station service electric device is used for exchanging information between the processor and the external device. The communication interface of the load shedding control device of the pumping and accumulating station service equipment is used for communicating with an external terminal through network connection. The computer program when executed by the processor is used for realizing a load shedding control method of the power equipment for the pumping and storage plant.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of a portion of the structure associated with the present application and is not intended to limit the load shedding control device of the pumping and accumulating plant to which the present application is applied, and that a particular pumping and accumulating plant load shedding control device may include more or fewer components than shown, or may incorporate some components, or may have a different arrangement of components.
In one embodiment, there is also provided a load shedding control device for a pumping and accumulating plant electric device, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be noted that, the user information (including, but not limited to, user equipment information, user personal information, etc.) and the data (including, but not limited to, data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use, and processing of the related data are required to meet the related regulations.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. The load shedding control method for the power equipment for the pumping and accumulating plant is characterized in that a high-voltage main power supply is converted into a plurality of low-voltage main power supplies through a transformer, and each low-voltage main power supply supplies power for power equipment associated with the low-voltage main power supply; the method comprises the following steps:
monitoring whether a high-voltage bus between the high-voltage main power supply and the transformer is out of voltage or not;
if the high-voltage bus is out of voltage, starting first load shedding control, and starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply under the first load shedding control, wherein the power supply does not supply power for non-important electric equipment;
if the high-voltage bus is not in voltage loss, monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is in voltage loss;
if any low-voltage bus loses voltage, acquiring the starting condition of a low-voltage standby power supply associated with any low-voltage main power supply;
and if the low-voltage standby power supply is not started, starting second load shedding control, and starting the power supply in the non-pumping and accumulating plant to supply power for the important electric equipment associated with any low-voltage main power supply under the second load shedding control, so as not to supply power for the non-important electric equipment.
2. The method of claim 1, wherein the monitoring whether the high voltage bus between the high voltage utility power source and the transformer is voltage-lost comprises:
acquiring the action condition of a high-voltage relay associated with the high-voltage bus;
and judging whether the high-voltage bus is out of voltage according to the action condition of the high-voltage relay.
3. The method according to claim 2, wherein the determining whether the high-voltage bus is out of voltage according to the action condition of the high-voltage relay comprises:
when the high-voltage relay is in a loss-of-excitation state, determining that the high-voltage bus is in a loss-of-voltage state;
and when the high-voltage relay is in an excitation state, determining that the high-voltage bus is not out of voltage.
4. The method of claim 1, wherein the monitoring whether the high voltage bus between the high voltage utility power source and the transformer is voltage-lost comprises:
monitoring whether a high-voltage main bus between the high-voltage main power supply and the transformer is out of voltage or not;
if the high-voltage main bus is out of voltage, monitoring whether a high-voltage standby bus between the high-voltage main power supply and the transformer is out of voltage or not;
and judging whether the high-voltage bus is out of voltage according to whether the high-voltage standby bus is out of voltage.
5. The method of claim 1, wherein monitoring whether the low voltage bus between each of the low voltage utility power sources to its associated powered device is voltage-lost comprises:
acquiring the action condition of a low-voltage relay associated with the low-voltage bus;
and judging whether the low-voltage bus is out of voltage according to the action condition of the low-voltage relay.
6. The method of claim 1, wherein after initiating the first load shedding control, the method further comprises:
and under the condition that the number of the high-voltage buses is multiple, when multiple sections of the high-voltage buses are powered again, the power supply of the non-important electric equipment associated with each low-voltage main power supply is recovered based on the high-voltage main power supply.
7. The method of claim 1, wherein after initiating the second load shedding control, the method further comprises:
and under the condition that the number of the low-voltage buses is multiple, when any section of the low-voltage buses is powered back, the power supply of the non-important electric equipment associated with any low-voltage main power supply is recovered based on any low-voltage main power supply.
8. The load shedding control device of the power equipment for the pumping and accumulating plant is characterized in that a high-voltage main power supply is converted into a plurality of low-voltage main power supplies through a transformer, and each low-voltage main power supply supplies power for power equipment associated with the low-voltage main power supply; the device comprises:
the high-voltage bus monitoring module is used for monitoring whether the high-voltage bus between the high-voltage main power supply and the transformer loses voltage or not;
the first load shedding control module is used for starting first load shedding control if the high-voltage bus loses voltage, and starting a high-voltage standby power supply to supply power for important electric equipment associated with each low-voltage main power supply under the first load shedding control, so as not to supply power for non-important electric equipment;
the low-voltage bus monitoring module is used for monitoring whether the low-voltage bus between each low-voltage main power supply and the associated electric equipment is out of voltage or not if the high-voltage bus is not out of voltage;
the starting condition acquisition module is used for acquiring the starting condition of the low-voltage standby power supply associated with any low-voltage main power supply if any low-voltage bus loses voltage;
and the second load shedding control module starts second load shedding control if the low-voltage standby power supply is not started, and starts the power supply in the non-pumping and accumulating plant to supply power for the important electric equipment associated with any low-voltage main power supply under the second load shedding control, so as not to supply power for the non-important electric equipment.
9. Load shedding control device of a pumping station electric device, comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method according to any one of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
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| CN202311607203.2A CN117318070A (en) | 2023-11-29 | 2023-11-29 | Load shedding control method and device for power equipment of pumping and accumulating plant and load shedding control equipment |
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| CN202311607203.2A CN117318070A (en) | 2023-11-29 | 2023-11-29 | Load shedding control method and device for power equipment of pumping and accumulating plant and load shedding control equipment |
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| JP2007037222A (en) * | 2005-07-22 | 2007-02-08 | Chugoku Electric Power Co Inc:The | Power supply system |
| CN103956748A (en) * | 2014-03-31 | 2014-07-30 | 国家电网公司 | Method for generating fault recovery scheme for load transfer when multiple buses are in loss of voltage |
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