WO2021196406A1 - 一种输电系统及其供电装置 - Google Patents

一种输电系统及其供电装置 Download PDF

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Publication number
WO2021196406A1
WO2021196406A1 PCT/CN2020/095827 CN2020095827W WO2021196406A1 WO 2021196406 A1 WO2021196406 A1 WO 2021196406A1 CN 2020095827 W CN2020095827 W CN 2020095827W WO 2021196406 A1 WO2021196406 A1 WO 2021196406A1
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Prior art keywords
power
power generation
energy storage
converter station
storage device
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PCT/CN2020/095827
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English (en)
French (fr)
Inventor
彭国平
王红占
周治国
史奔
刘会民
徐元龙
白代兵
Original Assignee
广东安朴电力技术有限公司
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Application filed by 广东安朴电力技术有限公司 filed Critical 广东安朴电力技术有限公司
Priority to EP20928655.8A priority Critical patent/EP3952047A4/en
Publication of WO2021196406A1 publication Critical patent/WO2021196406A1/zh

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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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
    • 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
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • 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
    • 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
    • H02J9/08—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 requiring starting of a prime-mover
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Definitions

  • the invention belongs to the field of remote power transmission, and specifically relates to a power transmission system and a power supply device thereof.
  • the diode rectification method can further reduce the volume and cost of the equipment compared with the fully controlled rectification method adopted by the flexible DC, so it is very suitable for offshore power plants. Rectifier end.
  • the converter station can only transmit electric energy from the AC input terminal to the DC output terminal.
  • auxiliary power needs to be provided from the outside to provide the power plant with starting power.
  • the auxiliary power supply also provides station power for the converter station.
  • black start refers to the process in which the entire system is powered off without relying on the help of other systems, and the device with the self-starting capability in the system is used to drive the equipment without the self-starting capability, and the entire system recovery process is gradually realized.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a power supply device of a power transmission system, which has a simple structure and solves the problem of failure to black start because there is no external auxiliary power supply. The invention also proposes a power transmission system.
  • the power supply device of the power transmission system includes: a converter station energy storage device, which is arranged in the converter station and is used to supply power to the control system of the converter station when the power plant is out of power or fails;
  • the data collection module is used to collect the bus voltage and the operating status of the converter station energy storage device;
  • the first main control board is respectively connected to the converter station energy storage device and the first data collection module, and is used to receive first data Collect the data collected by the module and control the start and stop of the energy storage device of the converter station;
  • the energy storage device for power generation is arranged in the power plant and is used to supply power to the control system of the power generation device when the power generation device is out of power or fails;
  • second data The collection module is used to collect the working status, maintenance status, and output power of the power generation device;
  • the second main control board is respectively connected to the power generation and energy storage device and the second data collection module, and is used to receive data collected by the second data collection module. Data and control the start and stop of power generation and energy storage
  • the power supply device has at least the following technical effects: the energy storage device of the converter station ensures that the control system of the converter station can continue to work in the case of power failure of the power generation field, and the power generation device is guaranteed by the power generation and energy storage device After a shutdown or failure, the control system of the power generation device can continue to work, and can achieve a black start.
  • Real-time collection of the bus voltage and the working status of the energy storage device of the converter station is realized through the first data acquisition module, and the automatic control of the energy storage device of the converter station is realized by combining with the first main control board.
  • the second data acquisition module Through the second data acquisition module, real-time acquisition of the working status, maintenance status, and output power of the power generation device is realized, and the automatic control of the power generation and energy storage device is realized through the second main control board, and finally, it is realized that there is no external auxiliary power supply. Under the premise of gradually completing the black start process.
  • the energy storage device of the converter station and the energy storage device of the power generation can be charged when the power supply device is working normally, so as to ensure that the longest backup can be achieved in subsequent use. Power supply time.
  • the converter station energy storage device includes: a first power storage module used as a backup power supply for the control system of the converter station; a first charge-discharge converter, an input terminal of which The output end of the first power storage module is connected, and the output end is used to connect the low-voltage side of the station transformer of the converter station.
  • the first power storage module adopts one or more of a battery, a flywheel, a super capacitor, a fuel cell, and an all-vanadium flow battery.
  • the converter station energy storage device further includes a first diesel generator set, and the output end of the first diesel generator set is connected to the low voltage side of the station transformer of the converter station.
  • the above-mentioned power supply device further includes a photovoltaic power generation group, and the output end of the photovoltaic power generation group is connected to the energy storage device of the converter station.
  • the power generation and energy storage device includes: a second power storage module, used as a backup power source for powering the control system of the power generation device when the power generation device is out of power or fails;
  • the input end is connected to the output end of the second power storage module, and the output end is used to connect the low-voltage side of the output transformer of the power generation device or the busbar connection of the wind power converter of the power generation device.
  • the second power storage module adopts one or more of a battery, a flywheel, a super capacitor, a fuel cell, and an all-vanadium flow battery.
  • the power generation and energy storage device further includes a step-up transformer, the input end of the step-up transformer is connected to the output end of the second charge and discharge converter, and the output end is connected to the output end of the power generation device.
  • the high-voltage side of the output transformer is connected.
  • the power generation and energy storage device further includes a second diesel generator set, and the output end of the second diesel generator set is connected to the low voltage side of the output transformer of the power generation device.
  • the offshore flexible power transmission system includes an external power plant, a converter station, and an onshore converter platform connected in sequence, and the above-mentioned power supply device connected to the converter station and the power plant respectively .
  • the offshore flexible power transmission system has at least the following technical effect: by adding the above-mentioned power supply device, the converter station and the external power generation field can realize self-starting without external auxiliary power supply, which solves the problem in remote areas.
  • the external auxiliary power supply cannot be connected, it cannot start by itself.
  • the addition of the above-mentioned power supply device can also ensure that the power is lost in the power generation field, and can realize the control of the converter station and the power generation field, and will not lose communication with the onshore converter platform.
  • Fig. 1 is a schematic diagram of the structure of a power transmission system according to an embodiment of the second aspect of the present invention
  • FIG. 2 is a schematic diagram of the structure of a converter station according to an embodiment of the first aspect of the present invention
  • FIG. 3 is a schematic diagram of the structure of an energy storage device for a converter station according to an embodiment of the first aspect of the present invention
  • Figure 4 is a schematic structural diagram of a power generation and energy storage device according to an embodiment of the first aspect of the present invention
  • FIG. 5 is a schematic structural diagram of a power generation and energy storage device according to an embodiment of the first aspect of the present invention (a step-up transformer is added);
  • Fig. 6 is a logic diagram of power supply for a converter station energy storage device according to an embodiment of the first aspect of the present invention
  • Fig. 7 is a power supply logic diagram of a power generation and energy storage device according to an embodiment of the first aspect of the present invention.
  • FIG. 8 is a structural block diagram of a power supply device of a converter station according to an embodiment of the first aspect of the present invention.
  • Fig. 9 is a structural block diagram of the power supply device of the power generation device according to the embodiment of the first aspect of the present invention.
  • Converter station energy storage device 110 first power storage module 111, first charge and discharge converter 112, photovoltaic power generation group 113, first diesel generator group 114, first circuit breaker group 115, first data acquisition module 120,
  • Power generation and energy storage device 210 Power generation and energy storage device 210, second power storage module 211, second charge and discharge converter 212, step-up transformer 213, second diesel generator set 214, second circuit breaker group 215, second data acquisition module 220, second The main control board 230 and the second opening board 240.
  • the power supply device includes: a converter station energy storage device 110, a first data acquisition module 120, a first main control board 130, a power generation and energy storage device 210, a second data acquisition module 220, and a second data acquisition module 220.
  • the converter station energy storage device 110 is set in the converter station and is used to supply power to the control system of the converter station in the event of a power outage or failure in the power plant; the first data acquisition module 120 is used to collect bus voltage and energy storage in the converter station The operating state of the device 110; the first main control board 130 is respectively connected to the converter station energy storage device 110 and the first data collection module 120, and is used to receive the data collected by the first data collection module 120 and control the converter station energy storage The start and stop of the device 110; the power generation and energy storage device 210, which is set in the power plant, is used to supply power to the control system of the power generation device when the power generation device is out of power or fails; the second data collection module 220 is used to collect the working status of the power generation device , Overhaul status, output power; the second main control board 230 is connected to the power generation and energy storage device 210 and the second data collection module 220 respectively, and is used to receive the data collected by the second data collection module 220 and control the power generation and energy storage device
  • the converter station energy storage device 110 is responsible for supplying power to the control system of the converter station when the power plant is out of power or fails, and the busbar cannot provide sufficient power.
  • the first data collection module 120 is used to collect the bus voltage and the working state of the energy storage device 110 of the converter station. Normally, a voltage sensor can be used to collect the bus voltage. For the collection of the working status of the converter station energy storage device 110, the voltage of the converter station energy storage device 110 can be collected to determine whether the converter station energy storage device 110 can provide Enough output.
  • the first main control board 130 mainly receives the data collected by the first data collection module 120, and analyzes and processes the collected data. It is mainly used to control the converter station energy storage device 110 to start and supply power when the bus voltage is too low. At the same time, it is also used to send out an alarm message when the energy storage device 110 of the converter station fails.
  • the power generation and energy storage device 210 is responsible for supplying power to the control system of the power generation device when the power generation device loses power.
  • One power generation and energy storage device 210 supplies power to one power generation device.
  • the second data collection module 220 mainly collects the working status, the overhaul status, and the output power of the power generation device. When the power generation device is in the overhaul status, the power generation and energy storage device 210 still maintains the working status.
  • the collection of the working status of the power generation device is mainly to understand the working status of the power generation device. In actual engineering, it can be combined with the voltage of the power generation device. Under normal circumstances, when the power generation device is out of power, the voltage will drop or even decrease.
  • the collection of output power can be obtained by collecting current and voltage.
  • the second main control board 230 is mainly used to receive the information transmitted by the second data acquisition module 220, and perform simple processing on the information, and control the access of the power generation and energy storage device 210. In addition, the second main control board 230 also uses In order to send out an alarm message when the power generation and energy storage device 210 fails to start normally or fails.
  • the converter station energy storage device 110 will be activated to carry out the electrical equipment in the converter station. Power supply to ensure the stable operation of the control system of the converter station. Under normal circumstances, after a power outage in a power plant, the power generating device in the power plant will restart. However, the conversion station energy storage device 110 is required to use the converter station energy storage device 110 in the process from the power outage to the successful grid connection again. The electrical equipment continues to supply power.
  • the converter station energy storage device 110 When the power generation device restarts and starts to supply power, and because the voltage rise is not a continuous process, it is necessary to continue to use the converter station energy storage device 110 after the black start starts and before the bus voltage rises to the first set value. powered by. When the busbar voltage rises to the first set value, the converter station energy storage device 110 will withdraw from power supply. At the same time, the busbar will also be used to charge the converter station energy storage device 110 to ensure that the converter station will be used next time. The station energy storage device 110 can be maintained in an optimal state of use.
  • the control system of the power generation device continuously collect the working status and output power of the power generation device.
  • the power generation device will be shut down artificially for reasons such as maintenance and maintenance.
  • the power generation and storage device 210 maintains power supply to ensure the automatic operation of the control system of the power generation device.
  • checking the working status it is necessary to determine whether it is in the overhaul status.
  • the control system of the power generation device When the power generation device is out of power and is not under maintenance, the control system of the power generation device will try to black start the power generation device; when the power generation device starts to black start but the output power is less than the second set value, the control system of the power generation device will simultaneously Use the power generation device and the power generation and energy storage device 210 to supply power at the same time to prevent the power generation device from being unable to supply the entire control system due to the small amount of power generated when the power generation device is just started; when the power generation device is operating normally and the output power is greater than the second set value, the power generation device
  • the control system only needs to use the power generation device for power supply, and the power generation device can also charge the power generation and energy storage device 210 to ensure that the power generation and energy storage device 210 is in the best state when the power generation and storage device 210 is used next time.
  • the black start function of the power generation device is also an important condition for the control system of the converter station to resume normal use.
  • both the first main control board 130 and the second main control board 230 can be processed by a single-chip microcomputer, DSP or PLC.
  • a single-chip microcomputer is used, specifically the STM32 series.
  • the converter station energy storage device 110 ensures that the control system of the converter station can continue to work in the event of a power loss in the power plant; , The control system of the power generation device can continue to work, and can achieve black start.
  • the first data acquisition module 120 realizes real-time acquisition of the bus voltage and the working status of the converter station energy storage device 110, and combines with the first main control board 130 to realize automatic control of the converter station energy storage device 110.
  • the black start process of the power generation device is gradually completed without external auxiliary power supply.
  • the converter station energy storage device 110 and the power generation energy storage device 210 can be charged during the normal operation of the power transmission system, so as to ensure that it can be used in subsequent use. Reach the longest standby power supply duration.
  • the power supply device in the embodiment of the present invention can perfectly meet the requirements of the offshore wind farm to complete the power transmission system by diode rectification.
  • the first main control board 130 is also connected to the second main control board 230 for data interaction with the second main control board 230.
  • the first main control board 130 can receive data from the second main control board 230, so as to realize the purpose of viewing the power plant information at the converter station.
  • both the first main control board 130 to control the access of the converter station energy storage device 110 and the second main control board 230 to control the power generation and energy storage device 210 to access can be achieved through contactors, and subsequently through the power generation device and the power generation field. When charging, this process can also be achieved through a contactor.
  • the power plant usually includes a wind power plant or a photovoltaic power plant, and the power generation device adopts a wind power generator or a photovoltaic power generation module.
  • the converter station energy storage device 110 includes: a first power storage module 111 and a first charge-discharge converter 112.
  • the first power storage module 111 is used as a backup power source for powering the control system of the converter station when the converter station fails;
  • the first charge-discharge converter 112 has its input terminal connected to the output terminal of the first power storage module 111, The output terminal is used to connect the low-voltage side of the station transformer of the converter station.
  • a stable power supply can be provided by the first power storage module 111 to ensure that the control system of the converter station can obtain a stable power supply. However, under normal circumstances, the first power storage module 111 cannot be directly connected to AC power.
  • the first charge-discharge converter 112 needs to be switched to achieve AC-DC conversion, rectification, filtering, etc., and finally can be connected.
  • the low-voltage side of the station transformer that enters the converter station is then supplied to the control system of the entire converter station.
  • the first power storage module 111 uses one or more of a battery, a flywheel, a super capacitor, a fuel cell, and an all-vanadium flow battery. Normally, only one of them needs to be used, but sometimes in order to improve stability or meet some special needs, multiple types can be used for compounding.
  • the above-mentioned power supply device further includes a photovoltaic power generation group 113, and the output end of the photovoltaic power generation group 113 is connected to the energy storage device 110 of the converter station.
  • the direct electricity generated by the photovoltaic power generation group 113 is direct current. After simple filtering, inversion, rectification, and stabilization, it can be connected to the direct current terminal, usually connected to the output end of the first power storage module 111 or the first charger. On the DC bus of the discharge converter 112, power is supplied in a DC manner.
  • the photovoltaic power generation group 113 can also be connected to the output end of the energy storage device 110 of the converter station, that is, connected to the low-voltage side of the station transformer of the converter station. After measures such as rectification and voltage stabilization, the inverter needs to be inverted, and then connected to the AC terminal. Finally, it is realized that supplementary power supply is continuously provided for the energy storage device 110 of the converter station, so as to increase the use time of the energy storage device 110 of the converter station.
  • the converter station energy storage device 110 further includes a first diesel generator set 114, and the output end of the first diesel generator set 114 is connected to the low voltage side of the station transformer of the converter station.
  • the first diesel generator set 114 is used to supply power after the first power storage module 111 fails.
  • the first diesel generator set 114 is connected to the low-voltage side of the station transformer of the converter station for power supply.
  • the access and exit of the first diesel generator set 114 are performed through the first main control board 130 to control the first circuit breaker group 115.
  • the control system of the converter station will not work normally. At this time, the first diesel generator set 114 is introduced.
  • the converter station energy storage device 110 When the power plant stops generating power and the bus voltage is lower than the first set value, the converter station energy storage device 110 will continue to be detected, if the converter station energy storage device If 110 is normal, the converter station energy storage device 110 is used to complete power supply. If it is abnormal, the first diesel generator set 114 needs to be started for power supply. When the power plant starts to operate and the bus voltage is lower than the first set value, the first diesel generator set 114 will continue to supply power. However, because the power plant has just started to operate, it is prone to insufficient power supply, so both will be at the same time. powered by. When the power plant is running and the busbar voltage is higher than the first set value, the first diesel generator set 114 will directly exit the grid, and the control system of the converter station only uses the busbar for power supply.
  • the above-mentioned power supply device further includes a first opening plate 140, and the first opening plate 140 is used to drive the grid connection and withdrawal of the first diesel generator set 114.
  • the operation of the first diesel generator set 114 can be better controlled by the first opening board 140, which is safer than the direct control by the first main control board 130, and the driving capability is also greater.
  • the above-mentioned power supply device further includes a human-computer interaction unit 150 connected to the first main control board 130.
  • the human-computer interaction system can view the working status of the entire converter station and the power plant connected to the converter station in real time, and can modify the first set value, second set value and other parameters, which increases the ductility of the power supply device.
  • the power generation and energy storage device 210 includes: a second power storage module 211 and a second charge-discharge converter 212.
  • the second power storage module 211 is used as a backup power supply for the control system of the power generation device when the power generation device fails; the second charge-discharge converter 212, the input terminal of which is connected to the output terminal of the second power storage module 211, and the output terminal It is used to connect the low voltage side of the output transformer of the power generating device or the busbar connection of the wind power converter of the power generating device.
  • the DC bus in the middle of the second charging and discharging converter 212 is usually directly connected to the DC bus of the wind power converter.
  • a stable power supply can be provided by the second power storage module 211 to ensure that the control system of the power generation device can obtain a stable power supply.
  • the second power storage module 211 cannot be directly connected to AC power.
  • the second charge-discharge converter 212 is required for switching to achieve AC-DC conversion, rectification, filtering, etc., and finally Connect to the low-voltage side of the output transformer of the power generation device, and then supply it to the control system of the entire power generation device.
  • the second power storage module 211 uses one or more of a battery, a flywheel, a super capacitor, a fuel cell, and an all-vanadium flow battery. Normally, only one of them needs to be used, but sometimes in order to improve stability or meet some special needs, multiple types can be used for compounding.
  • the power generation and energy storage device 210 further includes a step-up transformer 213.
  • the input end of the step-up transformer 213 is connected to the output end of the second charge and discharge converter 212, and the output end is connected to the output transformer of the power generation device.
  • Low-voltage side connection In some cases, the low-voltage side of the output transformer of the power generating device cannot be directly connected. In this case, the voltage boost can be connected to the high-voltage side of the output transformer of the power generating device through the step-up transformer 213 to complete power supply.
  • the power generation and energy storage device 210 further includes a second diesel generator set 214, and the output end of the second diesel generator set 214 is connected to the low voltage side of the output transformer of the power generation device.
  • the second diesel generator set 214 is used to supply power after the second power storage module 211 fails.
  • the second diesel generator set 214 is connected to the low-voltage side of the output transformer of the power generating device for power supply.
  • the access and exit of the second diesel generator set 214 are performed through the second main control board 230 controlling the second circuit breaker group 215.
  • the control system of the power generation device cannot perform a black start. At this time, the second diesel generator set 214 needs to be introduced.
  • the power generation and storage device 210 When the power generation device loses power, the power generation and storage device 210 will continue to be detected. If the power generation and storage device 210 is normal, the power generation and storage device 210 will be used as the control of the power generation device. The system supplies power. If the power generation and energy storage device 210 is abnormal, the second diesel generator set 214 needs to be started to supply power. When it is detected that the power generation device is not in the inspection state, the power generation device starts to black start.
  • the power generation and energy storage device When the output power is less than the second set value after the black start, because the power generation device is prone to insufficient power supply at the beginning of operation, the power generation and energy storage device will be used 210 and the power generation device supply power at the same time.
  • the power generation device When the power generation device is running and the output power is greater than the second set value, the second diesel generator set 214 will directly exit the grid, and the control system of the power generation device only uses the bus for power supply.
  • the above-mentioned power supply device further includes a second opening plate 240, and the second opening plate 240 is used to drive the grid connection and withdrawal of the second diesel generator set 214.
  • the second opening board 240 can better control the operation of the second diesel generator set, which is safer than the direct control via the second main control board 230, and the driving capability is also greater.
  • the power transmission system includes a power plant, a converter station, and an onshore converter platform connected in sequence, and the above-mentioned power supply devices respectively connected with the converter station and the power plant.
  • the converter station and the power plant can realize black start without external auxiliary power supply, which solves the problem that the external auxiliary power supply cannot be connected in remote areas.
  • the addition of the above-mentioned power supply device can also ensure that the power is lost in the power generation field, and can realize the control of the converter station and the power generation field, and will not lose communication with the onshore converter platform.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
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Abstract

一种输电系统的供电装置，使用变流站储能装置进行备用供电可以保证变流站的控制系统在发电场失电的情况下正常运行，使用发电储能装置进行备用供电可以保证发电场的发电装置在出现故障停机后，能够在不需要外部辅助电源的前提下实现黑启动，最终实现在整个输电系统的黑启动。此外，在黑启动完成之后，变流站储能装置和发电储能装置能够从发电场和发电装置获取电力进行充电。最后，在发电场和发电装置刚开始黑启动时，采用混合供电的方式进行供电，直到发电场和发电装置正常运行之后才会停止使用变流站储能装置和发电储能装置进行供电，确保了输电系统黑启动过程的稳定性和安全性。

Description

一种输电系统及其供电装置 技术领域
本发明属于远程输电领域，具体涉及一种输电系统及其供电装置。
背景技术
随着海上风电产业的发展，在海上布置发电场，并通过布置在发电场中的发电装置进行发电已经应用的越来越广泛，但是大多数的输电系统成本较高，探索新型的低成本、高可靠的海上风电直流并网方案已经成为产业发展的当务之急。虽然柔性直流输电相比传统直流输电具有占地面积小、体积小等优势，但是仍然不能完全适用于用于大规模、远距离海上风电并网。
目前，国内外已经开始对二极管无控整流器代替可控整流器的换流方法进行研究，二极管整流方式比柔性直流采用的全控整流方式能够进一步降低设备的体积和成本，因此非常适合于海上发电场整流端。但是，由于二极管整流方式的单向传输特性，变流站只能把电能从交流输入端传输到直流输出端，当发电场还未开始运行时需要从外部提供辅助电源为发电场提供启动电源，辅助电源同时也为变流站提供站用电源。但是，在某些偏远地区例如海上、沙漠等地方，从外部接入辅助电源很困难。
专业术语：黑启动，是指整个系统停电后，不依赖其他系统帮助，通过系统中具有自启动能力设备带动无自启动能力的设备，并逐渐实现整个系统恢复的过程。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种输电系统的供电装置，所述输电系统的供电装置的结构简单，解决了因为没有外部辅助电源而无法黑启动的问题。本发明还提出了一种输电系统。
根据本发明第一方面实施例的输电系统的供电装置，包括：变流站储能装置，设置于变流站内，用于在发电场停电或故障时为变流站的控制系统供电；第一数据采集模块，用于采集母线电压和变流站储能装置的运行状态；第一主控板，分别与所述变流站储能装置、第一数据采集模块连接，用于接收第一数据采集模块采集的数据并控制变流站储能装置的启停；发电储能装置，设置于发电场中，用于在发电装置停电或者故障时为所述发电装置的控制系统供电； 第二数据采集模块，用于采集发电装置的工作状态、检修状态、输出功率；第二主控板，分别与所述发电储能装置、第二数据采集模块连接，用于接收第二数据采集模块采集的数据并控制发电储能装置的启停。
根据本发明实施例的供电装置，至少具有如下技术效果：通过变流站储能装置保证了发电场失电的情况下变流站的控制系统能够继续工作，通过发电储能装置保证了发电装置在停机或出现故障后，发电装置的控制系统能够继续工作，并能够实现黑启动。通过第一数据采集模块实现对母线电压和变流站储能装置工作状态的实时采集，并通过结合第一主控板实现对变流站储能装置自动控制。通过第二数据采集模块实现对发电装置的工作状态、检修状态、输出功率的实时采集，并通过第二主控板实现了对发电储能装置的自动控制，最终，实现了在无外部辅助电源的前提下逐步完成黑启动过程。此外，通过第一主控板、第二主控板的控制可以在供电装置正常工作时实现对变流站储能装置和发电储能装置的充电，以保证后续使用中能够达到最长的备用供电时长。
根据本发明的一些实施例，所述变流站储能装置包括：第一蓄电模块，用作所述变流站的控制系统供电的备用电源；第一充放电变流器，其输入端连接所述第一蓄电模块的输出端，输出端用于连接所述变流站的站用变压器的低压侧。
根据本发明的一些实施例，所述第一蓄电模块采用蓄电池、飞轮、超级电容、燃料电池、全钒液流电池中的一种或多种。
根据本发明的一些实施例，变流站储能装置还包括第一柴油发电机组，所述第一柴油发电机组的输出端与所述变流站的站用变压器的低压侧连接。
根据本发明的一些实施例，上述的供电装置还包括光伏发电组，所述光伏发电组的输出端与所述变流站储能装置连接。
根据本发明的一些实施例，所述发电储能装置包括：第二蓄电模块，用作所述发电装置停电或者故障时为所述发电装置的控制系统供电的备用电源；第二充放电变流器，其输入端连接所述第二蓄电模块的输出端，输出端用于连接所述发电装置的输出变压器的低压侧或者所述发电装置的风电变流器的母线连接。
根据本发明的一些实施例，所述第二蓄电模块采用蓄电池、飞轮、超级电容、燃料电池、全钒液流电池中的一种或多种。
根据本发明的一些实施例，所述发电储能装置还包括升压变压器，所述升压变压器的输入端与所述第二充放电变流器输出端连接，输出端与所述发电装置的输出变压器的高压侧连接。
根据本发明的一些实施例，所述发电储能装置还包括第二柴油发电机组，所述第二柴油发电机组的输出端与所述发电装置的输出变压器的低压侧连接。
根据本发明第二方面实施例的海上柔性输电系统，包括依次连接的外部发电场、变流站、陆上换流平台,以及分别与所述变流站、发电场连接的如上述的供电装置。
根据本发明实施例的海上柔性输电系统，至少具有如下技术效果：通过增加上述的供电装置，使变流站、外发电场在没有外部辅助电源的前提下能够实现自启动，解决了在偏远地区无法外接外部辅助电源时，无法自行启动的问题。同时，通过增加上述的供电装置也可以保证在发电场失电的情况，能够实现对变流站、发电场的控制，不会与陆上换流平台失去通信联系。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是本发明第二方面实施例的输电系统结构示意图；
图2是本发明第一方面实施例的变流站结构示意图；
图3是本发明第一方面实施例的变流站储能装置结构示意图；
图4是本发明第一方面实施例的发电储能装置结构示意图；
图5是本发明第一方面实施例的发电储能装置结构示意图(增加升压变压器)；
图6是本发明第一方面实施例的变流站储能装置供电逻辑图；
图7是本发明第一方面实施例的发电储能装置供电逻辑图；
图8是本发明第一方面实施例的变流站的供电装置结构框图；
图9是本发明第一方面实施例的发电装置的供电装置结构框图。
附图标记：
变流站储能装置110、第一蓄电模块111、第一充放电变流器112、光伏发 电组113、第一柴油发电机组114、第一断路器组115、第一数据采集模块120、第一主控板130、第一开出板140、人机交互单元150、
发电储能装置210、第二蓄电模块211、第二充放电变流器212、升压变压器213、第二柴油发电机组214、第二断路器组215、第二数据采集模块220、第二主控板230、第二开出板240。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，如果有描述到第一、第二、第三、第四等等只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
下面参考图1至图9描述根据本实用新型第一方面实施例的供电装置。
根据本发明第一方面实施例的供电装置，包括：变流站储能装置110、第一数据采集模块120、第一主控板130、发电储能装置210、第二数据采集模块220、第二主控板230。变流站储能装置110，设置于变流站内，用于在发电场停电或者故障时为变流站的控制系统供电；第一数据采集模块120，用于采集母线电压和变流站储能装置110的运行状态；第一主控板130，分别与变流站储能装置110、第一数据采集模块120连接，用于接收第一数据采集模块120采集的数据并控制变流站储能装置110的启停；发电储能装置210，设置于发电场中，用于在发电装置停电或者故障时为发电装置的控制系统供电；第二数据采集模块220，用于采集发电装置的工作状态、检修状态、输出功率；第二主控板230，分别与发电储能装置210、第二数据采集模块220连接，用于接收第二数据采集模块220采集的数据并控制发电储能装置210的启停；第一主控板130还与第二主控板230连接，用于与第二主控板230进行数据交互。
参考图1至图9，变流站储能装置110负责在发电场停电或者故障、母线 无法提供足够电量的时候为变流站的控制系统供电。第一数据采集模块120用于采集母线电压和变流站储能装置110的工作状态。通常情况下，可以使用电压传感器采集母线电压，对于变流站储能装置110的工作状态的采集，可以通过采集变流站储能装置110的电压以判断变流站储能装置110能否提供足够的输出。第一主控板130主要接收第一数据采集模块120采集的数据，并对采集的数据进行分析和处理，主要用于母线电压过低时，控制变流站储能装置110启动并进行供电，同时还用于在变流站储能装置110出现故障时发出报警信息。
参考图1至图9，发电储能装置210负责在发电装置失电时为发电装置的控制系统供电。一个发电储能装置210为一个发电装置供电。第二数据采集模块220主要采集发电装置的工作状态、检修状态、输出功率，发电装置处于检修状态时，发电储能装置210仍然保持工作状态。对发电装置的工作状态的采集，主要是为了了解发电装置的工作状态，在实际工程中，可以与采集发电装置的电压进行复合，因为通常情况下，在发电装置停电时，电压会出现下降甚至直接归零的过程，而恢复正常发电时，电压出现一个上升到正常电压的过程。输出功率的采集可以通过采集电流、电压得出。第二主控板230主要用于接收第二数据采集模块220传输过来的信息，并对信息进行简单的处理，并控制发电储能装置210的接入，此外，第二主控板230还用于在发电储能装置210无法正常启动或出现故障时发出报警信息。
下面参考图1至图9，对供电装置的工作原理进行简述。
对于变流站的控制系统：持续采集母线电压，当发电场停电或者故障时，母线电压会出现下降。当母线电压下降到预设的第一设定值时，母线电压已经无法保证变流站的控制系统的正常运行，此时会启用变流站储能装置110对变流站内的用电设备进行供电，以保证变流站的控制系统的稳定运行。正常情况下，发电场在停电后，发电场中的发电装置会重新启动，而在发电装置从停电到再次并网成功的这一段过程则需要变流站储能装置110对变流站内的用电设备持续进行供电。当发电装置重新启动并且开始供电，又因为电压的上升不是一个连续的过程，因此在黑启动开始后、母线电压上升到第一设定值之前，都需要继续使用变流站储能装置110进行供电。当母线电压上升到第一设定值之后，变流站储能装置110将会退出供电，同时，也会使用母线为变流站储能装置110进行充电，以保证下次使用时，变流站储能装置110能够保持在最佳使 用状态。
对于发电装置的控制系统：持续采集发电装置工作状态、输出功率。发电装置会因为需要维修和维护等原因进行人为停机，当发电装置停机时候发电储能装置210保持供电，以保证发电装置的控制系统自动运行。在检测工作状态时，需要判定是否处于检修状态。当发电装置失电、未处于检修状态，发电装置的控制系统会尝试对发电装置进行黑启动；当发电装置开始黑启动、但是输出功率小于第二设定值时，发电装置的控制系统会同时使用发电装置和发电储能装置210同时进行供电，以防止发电装置在刚启动时因为发电量少而无法供给整个控制系统；当发电装置正常运行且输出功率大于第二设定值时，发电装置的控制系统只需要使用发电装置进行供电即可，同时发电装置还可以向发电储能装置210充电，以保证下次使用发电储能装置210时处于最佳状态。此外，发电装置具备黑启动功能也是变流站的控制系统能够重新恢复正常使用的重要条件。
此外，在本发明的一些实施例中，第一主控板130和第二主控板230皆可以采用单片机、DSP或PLC进行处理，本发明实施例中采用单片机，具体采用STM32系列。
根据本发明实施例的供电装置，通过变流站储能装置110保证了发电场失电的情况下，变流站的控制系统能够继续工作；通过发电储能装置210保证了发电装置在停机后，发电装置的控制系统能够继续工作，并能够实现黑启动。通过第一数据采集模块120实现对母线电压和变流站储能装置110工作状态的实时采集，并通过结合第一主控板130实现对变流站储能装置110自动控制。最终，实现了在无外部辅助电源的前提下逐步完成发电装置黑启动过程。此外，通过第一主控板130、第二主控板230的控制，可以在输电系统正常工作时实现对变流站储能装置110和发电储能装置210的充电，以保证后续使用中能够达到最长的备用供电时长。此外还需要说明，本发明实施例中的供电装置能够完美地满足海上风力发电场采用二极管整流方式完成输电系统的需求。
在本发明的一些实施例中，第一主控板130还与第二主控板230连接，用于与第二主控板230进行数据交互。第一主控板130可以接收来自第二主控板230的数据，以实现在变流站即可查看发电场信息的目的。还需要说明，第一主控板130控制变流站储能装置110接入和第二主控板230控制发电储能装置 210接入都可以通过接触器实现，且后续通过发电装置和发电场进行充电时，也可以通过接触器实现这一过程。发电场通常包括风力发电场或光伏电场，发电装置则对应采用风力发电机组或光伏发电模块。
在本发明的一些实施例中，变流站储能装置110包括：第一蓄电模块111、第一充放电变流器112。第一蓄电模块111，用作变流站出现故障时为变流站的控制系统供电的备用电源；第一充放电变流器112，其输入端连接第一蓄电模块111的输出端，输出端用于连接变流站的站用变压器的低压侧。通过第一蓄电模块111可以提供一个稳定的电源，以保证变流站的控制系统能够得到稳定的电源供给。但是通常情况下，第一蓄电模块111无法直接接入到交流电中，此时则需要第一充放电变流器112进行转接，以实现交直流转换、整流、滤波等操作，最终才能接入变流站的站用变压器的低压侧，然后供给到整个变流站的控制系统。
在本发明的一些实施例中，第一蓄电模块111采用蓄电池、飞轮、超级电容、燃料电池、全钒液流电池中的一种或多种。通常情况下只需要采用其中一种即可，但是有时候为了提高稳定性或者满足一些特殊的需求，可以使用多种进行复合。
在本发明的一些实施例中，上述供电装置还包括光伏发电组113，光伏发电组113的输出端与变流站储能装置110连接。光伏发电组113与变流站储能装置110的连接方式较多，根据不同的需求可以有不同的连接方式。光伏发电组113发直接发出的电为直流电，通过简单的滤波、逆变、整流、稳压等措施之后可以连接在直流端子上，通常连接在第一蓄电模块111的输出端或第一充放电变流器112的直流母线上，进而实现直流的方式进行供电。光伏发电组113还可以连接在变流站储能装置110的输出端，即连接在变流站的站用变压器的低压侧，此时为交流状态，光伏发电组113发出的直流电在经过滤波、整流、稳压等措施后还需要通过逆变器进行逆变，再接入到交流端子上。最终实现持续为变流站储能装置110进行补充供电，以提高变流站储能装置110的使用时间。
在本发明的一些实施例中，变流站储能装置110还包括第一柴油发电机组114，第一柴油发电机组114的输出端与变流站的站用变压器的低压侧连接。第一柴油发电机组114用于在第一蓄电模块111出现故障后进行供电。第一柴 油发电机组114接入变流站的站用变压器的低压侧进行供电。第一柴油发电机组114的接入和退出都是通过第一主控板130控制第一断路器组115进行。当变流站储能装置110无法使用时，变流站的控制系统将无法正常工作。此时引入第一柴油发电机组114。
下面简述一下引入第一柴油发电机组114的过程：当发电场停止发电、母线电压低于第一设定值时，将会持续检测变流站储能装置110，如果变流站储能装置110正常，则采用变流站储能装置110完成供电，如果异常，则需要启动第一柴油发电机组114进行供电。当发电场开始运行、母线电压低于第一设定值时，第一柴油发电机组114还是会持续供电，但此时因为发电场刚开始运行，容易出现供电不足的问题，因此会两者同时供电。在当发电场运行、母线电压高于第一设定值时，第一柴油发电机组114会直接进行退网，变流站的控制系统仅采用母线进行供电。
在本发明的一些实施例中，上述供电装置还包括第一开出板140，第一开出板140用于驱动第一柴油发电机组114的并网与退网。通过第一开出板140可以更好的控制第一柴油发电机组114的工作，相对于直接通过第一主控板130控制更为安全，且驱动能力也更大。
在本发明的一些实施例中，上述供电装置还包括人机交互单元150，与第一主控板130连接。人机交互系统可以实时的查看整个变流站和与变流站连接的发电场的工作状态，且可以修改第一设定值、第二设定值等参数，增加了供电装置的延展性。
在本发明的一些实施例中，发电储能装置210包括：第二蓄电模块211、第二充放电变流器212。第二蓄电模块211，用作发电装置出现故障时为发电装置的控制系统供电的备用电源；第二充放电变流器212，其输入端连接第二蓄电模块211的输出端，输出端用于连接所述发电装置的输出变压器的低压侧或者所述发电装置的风电变流器的母线连接。第二充放电变流器212与发电装置的风电变流器连接时，通常会将第二充放电变流器212中间的直流母线直接与风电变流器的直流母线连接。通过第二蓄电模块211可以提供一个稳定的电源，以保证发电装置的控制系统能够得到稳定的电源供给。但是通常情况下，第二蓄电模块211无法直接接入到交流电中，此时则需要第二充放电变流器212进行转接，以实现交直流住转换、整流、滤波等操作，最终才能接入发电 装置的输出变压器的低压侧，然后供给到整个发电装置的控制系统。
在本发明的一些实施例中，第二蓄电模块211采用蓄电池、飞轮、超级电容、燃料电池、全钒液流电池中的一种或多种。通常情况下只需要采用其中一种即可，但是有时候为了提高稳定性或者满足一些特殊的需求，可以使用多种进行复合。
在本发明的一些实施例中，发电储能装置210还包括升压变压器213，升压变压器213的输入端与第二充放电变流器212输出端连接，输出端与发电装置的输出变压器的低压侧连接。在有些情况下，发电装置的输出变压器的低压侧无法直接接线，此时可以通过升压变压器213将电压升高接入到发电装置的输出变压器的高压侧，完成供电。
在本发明的一些实施例中，发电储能装置210还包括第二柴油发电机组214，第二柴油发电机组214的输出端与发电装置的输出变压器的低压侧连接。第二柴油发电机组214用于在第二蓄电模块211出现故障后进行供电。第二柴油发电机组214接入发电装置的输出变压器的低压侧进行供电。第二柴油发电机组214的接入和退出都是通过第二主控板230控制第二断路器组215进行。当发电储能装置210无法使用时，发电装置的控制系统将无法进行黑启动。此时则需要引入第二柴油发电机组214。
下面简述一下引入第二柴油发电机组214的过程：当发电装置失电，将会持续检测发电储能装置210，如果发电储能装置210正常，则采用发电储能装置210为发电装置的控制系统供电，如果发电储能装置210异常，则需要启动第二柴油发电机组214进行供电。当检测到发电装置未处于检修状态时，发电装置开始黑启动，黑启动后输出功率小于第二设定值时，因为发电装置刚开始运行容易出现供电不足的问题，因此会采用发电储能装置210和发电装置同时供电。在当发电装置运行、输出功率大于第二设定值时，第二柴油发电机组214会直接进行退网，发电装置的控制系统仅采用母线进行供电。
在本发明的一些实施例中，上述供电装置还包括第二开出板240，第二开出板240用于驱动第二柴油发电机组214的并网与退网。通过第二开出板240可以更好的控制第二柴油发电机组的工作，相对于直接通过第二主控板230控制更为安全，且驱动能力也更大。
根据本发明第二方面实施例的输电系统，包括依次连接的发电场、变流站、 陆上换流平台，以及分别与变流站、发电场连接的上述供电装置。
根据本发明实施例的的海上柔性输电系统，通过增加上述的供电装置，使变流站、发电场在没有外部辅助电源的前提下能够实现黑启动，解决了在偏远地区无法接入外部辅助电源时，无法自行启动的问题。同时，通过增加上述的供电装置也可以保证在发电场失电的情况，能够实现对变流站、发电场的控制，不会与陆上换流平台失去通信联系。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上述结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (10)

  1. 一种输电系统的供电装置，其特征在于，包括：
    变流站储能装置(110)，设置于变流站内，用于在发电场停电或故障时为变流站的控制系统供电；
    第一数据采集模块(120)，用于采集母线电压和变流站储能装置(110)的运行状态；
    第一主控板(130)，分别与所述变流站储能装置(110)、第一数据采集模块(120)连接，用于接收第一数据采集模块(120)采集的数据并控制变流站储能装置(110)的启停；
    发电储能装置(210)，设置于发电场中，用于在发电装置停电或者故障时为所述发电装置的控制系统供电；
    第二数据采集模块(220)，用于采集发电装置的工作状态、检修状态、输出功率；
    第二主控板(230)，分别与所述发电储能装置(210)、第二数据采集模块(220)连接，用于接收第二数据采集模块(220)采集的数据并控制发电储能装置(210)的启停。
  2. 根据权利要求1所述的供电装置，其特征在于，所述变流站储能装置(110)包括：
    第一蓄电模块(111)，用作所述变流站的控制系统供电的备用电源；
    第一充放电变流器(112)，其输入端连接所述第一蓄电模块(111)的输出端，输出端用于连接所述变流站的站用变压器的低压侧。
  3. 根据权利要求2所述的供电装置，其特征在于，所述第一蓄电模块(111)采用蓄电池、飞轮、超级电容、燃料电池、全钒液流电池中的一种或多种。
  4. 根据权利要求2所述的供电装置，其特征在于，变流站储能装置(110)还包括第一柴油发电机组(114)，所述第一柴油发电机组(114)的输出端与所述变流站的站用变压器的低压侧连接。
  5. 根据权利要求1所述的供电装置，其特征在于，还包括光伏发电组(113)，所述光伏发电组(113)的输出端与所述变流站储能装置(110)连接。
  6. 根据权利要求1所述的供电装置，其特征在于，所述发电储能装置(210)包括：
    第二蓄电模块(211)，用作所述发电装置停电或者故障时为所述发电装置的控制系统供电的备用电源；
    第二充放电变流器(212)，其输入端连接所述第二蓄电模块(211)的输出端，输出端用于连接所述发电装置的输出变压器的低压侧或者所述发电装置的风电变流器的母线连接。
  7. 根据权利要求6所述的供电装置，其特征在于，所述第二蓄电模块(211)采用蓄电池、飞轮、超级电容、燃料电池、全钒液流电池中的一种或多种。
  8. 根据权利要求6所述的供电装置，其特征在于，所述发电储能装置(210)还包括升压变压器(213)，所述升压变压器(213)的输入端与所述第二充放电变流器(212)输出端连接，输出端与所述发电装置的输出变压器的高压侧连接。
  9. 根据权利要求6所述的供电装置，其特征在于，所述发电储能装置(210)还包括第二柴油发电机组(214)，所述第二柴油发电机组(214)的输出端与所述发电装置的输出变压器的低压侧连接。
  10. 一种输电系统，其特征在于，包括依次连接的发电场、变流站、陆上换流平台,以及分别与所述变流站、发电场连接的如权利要求1至9任一所述的供电装置。
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