JP3243443U - Thermal power generation high voltage directly connected energy storage reserve station power supply system - Google Patents
Thermal power generation high voltage directly connected energy storage reserve station power supply system Download PDFInfo
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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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
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- Power Engineering (AREA)
- Business, Economics & Management (AREA)
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- Stand-By Power Supply Arrangements (AREA)
Abstract
【課題】火力発電所への給電の信頼性を向上させることができる火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを提供する。【解決手段】火力発電高圧直掛けエネルギー貯蔵予備所内電源システムは、火力発電系統連系予備変圧器ユニット、エネルギー貯蔵給電ユニット及び火力発電所内ユニットを備え、火力発電系統連系予備変圧器ユニットが、エネルギー貯蔵給電ユニット及び火力発電所内ユニットにそれぞれ接続され、エネルギー貯蔵給電ユニットが、エネルギー貯蔵設備、エネルギー貯蔵設備交直変換装置、エネルギー貯蔵設備断路スイッチ、エネルギー貯蔵昇圧変圧器及びエネルギー貯蔵系統連系スイッチを有する。エネルギー貯蔵給電ユニットを火力発電ユニット予備変圧器低圧側に直接設置することにより、安定電圧源として火力発電ユニットに並列接続され、電力網の周波数調整過程に参加するとともに、所内４００Ｖ負荷予備電源とする。【選択図】図１The present invention provides a power supply system in a thermal power generation high voltage directly connected energy storage standby station that can improve the reliability of power supply to a thermal power plant. A thermal power generation high voltage directly connected energy storage backup station internal power supply system includes a thermal power generation system interconnection standby transformer unit, an energy storage power supply unit and a thermal power plant internal unit, wherein the thermal power generation system interconnection standby transformer unit comprises: The energy storage and power supply unit is connected to the unit in the thermal power plant, and the energy storage and power supply unit includes the energy storage equipment, the energy storage equipment AC/DC converter, the energy storage equipment disconnecting switch, the energy storage step-up transformer, and the energy storage grid connection switch. have. By directly installing the energy storage and power supply unit on the low voltage side of the thermal power unit standby transformer, it can be connected in parallel with the thermal power unit as a stable voltage source, participate in the frequency adjustment process of the power grid, and serve as a 400V load standby power source in the station. [Selection drawing] Fig. 1
Description
本考案は、予備所内電源システム技術分野に関し、特に火力発電高圧直掛けエネルギー貯蔵予備所内電源システムに関する。 TECHNICAL FIELD The present invention relates to the technical field of backup station power supply system, and more particularly to a thermal power generation high voltage direct-connected energy storage backup station power supply system.
大規模なエネルギー貯蔵技術は、エネルギー変革の鍵となる技術のサポートの１つとして、電力網にピーク調整、周波数変調、緊急電力供給などの多くの補助サービスを提供できるため、近年では業界内で広く注目されている。電気化学エネルギー貯蔵＋リチウム電池の組み合せからなる混合エネルギー貯蔵システムは、コンバータによって火力発電ユニットに接続され、電力双方向流動能力を備え、電力調整が迅速で、応用電力供給モードが多様であるなどの利点がある。しかしながら、従来の火力発電ユニットに接続されるエネルギー貯蔵設備は、高圧所内変圧器に頼らなければ給電を実現できないので、電気エネルギー損失が大きく、エネルギー貯蔵システムにより提供される電圧は安定性が悪い。 As one of the key technological supports for the energy transformation, large-scale energy storage technology has gained widespread acceptance within the industry in recent years, as it can provide the power grid with many ancillary services such as peak regulation, frequency modulation, and emergency power supply. Attention has been paid. The mixed energy storage system, which consists of a combination of electrochemical energy storage + lithium battery, is connected to the thermal power generation unit by a converter, has power bi-directional flow capability, quick power adjustment, diverse applied power supply modes, etc. There are advantages. However, the energy storage equipment connected to the conventional thermal power unit can only realize the power supply by relying on the high voltage station transformer, so the electrical energy loss is large and the voltage provided by the energy storage system is not stable.
本考案は直掛け、電気エネルギー損失量が大きく且つ電圧が安定的でないという関連技術における技術的課題を少なくとも解決するために、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを提供する。 The present invention provides a thermal power high-voltage direct-connected energy storage reserve power supply system to at least solve the technical problems in the related art of direct-connected, large electrical energy loss and unstable voltage.
本考案の第１態様の実施例は、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムであって、火力発電系統連系予備変圧器ユニット、エネルギー貯蔵給電ユニット及び火力発電所内ユニットを備え、前記火力発電系統連系予備変圧器ユニットが、前記エネルギー貯蔵給電ユニット及び前記火力発電所内ユニットにそれぞれ接続され、前記エネルギー貯蔵給電ユニットが、前記火力発電所内ユニットに接続され、前記火力発電系統連系予備変圧器ユニットが、発電するための発電機を有し、前記エネルギー貯蔵給電ユニットが、電力網の停電により前記発電機が停止する時に、前記火力発電所内ユニットに給電するためのものであり、前記火力発電所内ユニットが、前記エネルギー貯蔵給電ユニットにより提供された電気エネルギーを受け取ることで、前記火力発電所内ユニット内の所内負荷を運転させるためのものであり、前記エネルギー貯蔵給電ユニットが、エネルギー貯蔵設備、エネルギー貯蔵設備交直変換装置、エネルギー貯蔵設備断路スイッチ、エネルギー貯蔵昇圧変圧器及びエネルギー貯蔵系統連系スイッチを有する、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを提供する。 An embodiment of the first aspect of the present invention is a thermal power generation high voltage directly connected energy storage standby station power supply system, comprising a thermal power grid interconnection standby transformer unit, an energy storage feeding unit and a thermal power station internal unit, wherein the thermal power A power grid interconnection standby transformer unit is respectively connected to the energy storage and feeding unit and the thermal power plant internal unit, the energy storage and feeding unit is connected to the thermal power plant internal unit, and the thermal power grid interconnection preliminary transformation. said energy storage and feeding unit is for feeding said thermal power plant internal unit when said generator shuts down due to a power grid outage, said thermal power plant The on-site unit receives the electric energy provided by the energy storage and power supply unit to operate the on-site load in the thermal power plant on-site unit, and the energy storage and power supply unit comprises an energy storage facility, an energy A thermal power generation high voltage direct-connected energy storage backup station power supply system is provided, which includes a storage facility AC/DC converter, an energy storage facility disconnect switch, an energy storage step-up transformer, and an energy storage grid connection switch.
好ましくは、前記エネルギー貯蔵給電ユニットが、さらに、前記発電機が無負荷状態にある時に前記火力発電系統連系予備変圧器ユニットに給電する。 Preferably, said energy storage and feeding unit further feeds said thermal power grid standby transformer unit when said generator is in no-load condition.
好ましくは、前記火力発電系統連系予備変圧器ユニットが、火力発電系統連系母線、発電機主変圧器、分割巻線予備変圧器、予備変圧器低圧側第１分岐母線及び予備変圧器低圧側第２分岐母線をさらに有し、前記発電機が前記発電機主変圧器により前記火力発電系統連系母線に接続され、前記分割巻線予備変圧器の高圧側が前記火力発電系統連系母線に接続され、前記分割巻線予備変圧器の低圧側が前記予備変圧器低圧側第１分岐母線及び前記予備変圧器低圧側第２分岐母線にそれぞれ接続される。 Preferably, the thermal power system interconnection standby transformer unit comprises a thermal power system interconnection bus, a generator main transformer, a split winding standby transformer, a standby transformer low voltage side first branch bus and a standby transformer low voltage side A second branch bus is further provided, the generator is connected to the thermal power generation system interconnection bus by the generator main transformer, and the high voltage side of the split winding auxiliary transformer is connected to the thermal power generation system interconnection bus. and the low voltage side of the split winding pre-transformer is connected to the pre-transformer low-voltage side first branch bus and the pre-transformer low-voltage side second branch bus, respectively.
さらに好ましくは、前記エネルギー貯蔵設備交直変換装置、前記エネルギー貯蔵設備断路スイッチ、前記エネルギー貯蔵昇圧変圧器及び前記エネルギー貯蔵系統連系スイッチが順次接続され、前記エネルギー貯蔵設備交直変換装置が前記エネルギー貯蔵設備に接続され、前記エネルギー貯蔵系統連系スイッチが前記予備変圧器低圧側第２分岐母線に接続され、前記エネルギー貯蔵設備交直変換装置が前記エネルギー貯蔵設備から発電された低圧直流電流を低圧交流電流に変換するためのものである。 More preferably, the energy storage facility AC/DC converter, the energy storage facility disconnect switch, the energy storage step-up transformer, and the energy storage system interconnection switch are connected in sequence, and the energy storage facility AC/DC converter is connected to the energy storage facility. , the energy storage system interconnection switch is connected to the low-voltage side second branch bus of the standby transformer, and the energy storage facility AC/DC converter converts the low-voltage DC current generated from the energy storage facility into a low-voltage AC current. It is for conversion.
さらに好ましくは、前記エネルギー貯蔵給電ユニットが、所内予備母線をさらに有し、該所内予備母線の一端が前記エネルギー貯蔵昇圧変圧器に接続され、前記所内予備母線の他端が前記火力発電所内ユニットに接続される。 More preferably, the energy storage and power supply unit further has an on-site standby bus, one end of the on-site standby bus is connected to the energy storage step-up transformer, and the other end of the on-site standby bus is connected to the thermal power plant internal unit. Connected.
さらに好ましくは、前記火力発電所内ユニットが、前記所内負荷、高圧所内変圧器母線、分割巻線高圧所内変圧器、高圧所内変圧器低圧側第１分岐母線、高圧所内変圧器低圧側第２分岐母線、低圧所内系統連系スイッチ、二重巻線低圧所内変圧器、所内母線、低圧予備給電スイッチ及び低圧負荷スイッチを有し、前記分割巻線高圧所内変圧器の高圧側が前記高圧所内変圧器母線により前記発電機の出口に接続され、前記分割巻線高圧所内変圧器の低圧側が前記高圧所内変圧器低圧側第１分岐母線及び前記高圧所内変圧器低圧側第２分岐母線にそれぞれ接続され、前記高圧所内変圧器低圧側第２分岐母線が前記低圧所内系統連系スイッチにより前記二重巻線低圧所内変圧器に接続され、前記二重巻線低圧所内変圧器が前記所内母線に接続され、前記所内負荷が低圧負荷を有し、該低圧負荷が前記低圧負荷スイッチにより前記所内母線に接続され、前記エネルギー貯蔵給電ユニットが前記低圧予備給電スイッチにより前記所内母線に接続される。 More preferably, the unit in the thermal power station comprises the station load, the high voltage station transformer bus, the split winding high voltage station transformer, the high voltage station transformer low voltage side first branch bus, and the high voltage station transformer low voltage side second branch bus. , a low voltage station grid connection switch, a double winding low voltage station transformer, a station bus, a low voltage backup power supply switch and a low voltage load switch, wherein the high voltage side of said split winding high voltage station transformer is connected by said high voltage station transformer bus. connected to the outlet of the generator, the low-voltage side of the split-winding high-voltage indoor transformer being connected to the high-voltage indoor transformer low-voltage side first branch bus and the high-voltage indoor transformer low-voltage side second branch bus, respectively; The in-station transformer low-voltage side second branch bus is connected to the double-winding low-voltage in-station transformer by the low-voltage in-station system interconnection switch, the double-winding low-voltage in-station transformer is connected to the in-station bus, and the in-station A load has a low voltage load, the low voltage load is connected to the domestic bus by the low voltage load switch, and the energy storage and feeding unit is connected to the domestic bus by the low voltage standby feeding switch.
さらに好ましくは、前記火力発電所内ユニットが、高圧第１負荷スイッチ及び高圧第２負荷スイッチをさらに有し、
前記所内負荷が、火力発電所内高圧一類負荷及び火力発電所内高圧二類負荷をさらに有し、前記火力発電所内高圧一類負荷が前記高圧第１負荷スイッチにより前記高圧所内変圧器低圧側第１分岐母線に接続され、前記火力発電所内高圧二類負荷が前記高圧第２負荷スイッチにより前記高圧所内変圧器低圧側第２分岐母線に接続される。
More preferably, the unit in the thermal power plant further has a high voltage first load switch and a high voltage second load switch,
The plant load further includes a thermal power plant high voltage class 1 load and a thermal power plant high voltage class 2 load, and the thermal power plant high voltage class 1 load is switched by the high voltage first load switch to switch the low voltage side first branch bus of the high voltage station transformer. , and the second class high-voltage load in the thermal power plant is connected to the second branch bus on the low-voltage side of the transformer in the high-voltage station by the second high-voltage load switch.
さらに好ましくは、前記火力発電系統連系予備変圧器ユニットは、さらに、電力網の停電により前記発電機が停止する時、前記エネルギー貯蔵給電ユニットにより提供された電気エネルギーを前記火力発電所内ユニットに逆送電する。 More preferably, the thermal power grid-connected standby transformer unit further transmits the electrical energy provided by the energy storage and feeding unit back to the thermal power plant internal unit when the generator stops due to a power grid failure. do.
さらに好ましくは、前記エネルギー貯蔵給電ユニットは、さらに、前記低圧負荷が電気エネルギーを必要とする時、前記エネルギー貯蔵系統連系スイッチを遮断して、前記低圧負荷に電気エネルギーを供給する。 More preferably, the energy storage and power supply unit further disconnects the energy storage grid connection switch to supply electrical energy to the low voltage load when the low voltage load requires electrical energy.
さらに好ましくは、前記エネルギー貯蔵系統連系スイッチと前記低圧予備給電スイッチとの間には閉鎖スイッチが設置されている。 More preferably, a closing switch is installed between the energy storage grid connection switch and the low voltage standby power switch.
本考案の実施例により提供される技術案は少なくとも以下の有益な効果を奏する。 The technical solutions provided by the embodiments of the present invention have at least the following beneficial effects.
本考案は、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを提供し、火力発電系統連系予備変圧器ユニット、エネルギー貯蔵給電ユニット及び火力発電所内ユニットを備え、火力発電系統連系予備変圧器ユニットはエネルギー貯蔵給電ユニット及び火力発電所内ユニットにそれぞれ接続され、エネルギー貯蔵給電ユニットは火力発電所内ユニットに接続され、火力発電系統連系予備変圧器ユニットは発電機を有し、火力発電系統連系予備変圧器ユニットは、発電機を利用して発電するためのものであり、エネルギー貯蔵給電ユニットは、電力網の停電により発電機が停止する時に、火力発電所内ユニットに給電するためのものであり、火力発電所内ユニットは、エネルギー貯蔵給電ユニットにより提供された電気エネルギーを受け取ることで、火力発電所内ユニット内の所内負荷を運転させるためのものであり、ここで、エネルギー貯蔵給電ユニットは、エネルギー貯蔵設備、エネルギー貯蔵設備交直変換装置、エネルギー貯蔵設備断路スイッチ、エネルギー貯蔵昇圧変圧器及びエネルギー貯蔵系統連系スイッチを有する。本考案は、エネルギー貯蔵給電ユニットを火力発電系統連系予備変圧器ユニットに接続し、すなわちエネルギー貯蔵給電ユニットを火力発電ユニット予備変圧器低圧側に直接設置することにより、安定電圧源として火力発電ユニットに並列接続され、電力網の周波数調整過程に参加するとともに、所内４００Ｖ負荷予備電源として火力発電所への給電の信頼性を向上させることができる。 The present invention provides a thermal power high voltage directly connected energy storage backup station power supply system, comprising a thermal power grid interconnection standby transformer unit, an energy storage feeding unit and a thermal power station internal unit, and a thermal power grid interconnection backup transformer unit. is connected to the energy storage and feeding unit and the unit in the thermal power plant respectively, the energy storage and feeding unit is connected to the unit in the thermal power plant, the thermal power grid interconnection standby transformer unit has a generator, and the thermal power grid interconnection standby The transformer unit is for generating electricity using the generator, and the energy storage and power supply unit is for supplying power to the unit in the thermal power plant when the generator stops due to a blackout in the power grid. The on-site unit is for receiving electrical energy provided by the energy storage and power supply unit to drive on-site loads within the thermal power plant on-site unit, wherein the energy storage and power supply unit comprises an energy storage facility, It has an energy storage equipment AC/DC converter, an energy storage equipment disconnecting switch, an energy storage step-up transformer and an energy storage grid connection switch. The present invention connects the energy storage and feeding unit to the thermal power grid connection standby transformer unit, that is, directly installs the energy storage and feeding unit on the low voltage side of the thermal power unit standby transformer, so that the thermal power unit as a stable voltage source , it can participate in the frequency adjustment process of the power grid, and can improve the reliability of power supply to the thermal power plant as a 400V load standby power source in the station.
本考案の付加的な態様及び利点は以下の説明から部分的に与えられ、その一部は以下の説明から明確になり、又は本考案を実践することにより理解することができる。 Additional aspects and advantages of the invention will be set forth in part from the description that follows, and in part will be apparent from the description, or may be learned by practice of the invention.
本考案の上記及び／又は付加的な態様及び利点は、以下の図面に合わせる実施例への説明から明確になり且つ理解しやすくなる。
以下は本考案の実施例を詳しく説明し、最初から最後まで同じ又は類似する符号は同じ又は類似する素子、或いは同じ又は類似する機能を備える素子を表す。以下、図面を参考して説明される実施例は例示的なものであり、本考案を説明するためものに過ぎず、本考案を限定するものとして理解してはならない。 The following is a detailed description of embodiments of the present invention, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only for the purpose of explaining the present invention and should not be understood as limiting the present invention.
本考案は火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを提供する。ここで、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムは、火力発電系統連系予備変圧器ユニット、エネルギー貯蔵給電ユニット及び火力発電所内ユニットを備え、火力発電系統連系予備変圧器ユニットはエネルギー貯蔵給電ユニット及び火力発電所内ユニットにそれぞれ接続され、エネルギー貯蔵給電ユニットは火力発電所内ユニットに接続され、火力発電系統連系予備変圧器ユニットは発電機を有し、火力発電系統連系予備変圧器ユニットは、発電機を用いて発電するためのものであり、エネルギー貯蔵給電ユニットは、電力網の停電により発電機が停止する時に、火力発電所内ユニットに給電するためのものであり、火力発電所内ユニットは、エネルギー貯蔵給電ユニットにより提供された電気エネルギーを受け取ることで、火力発電所内ユニット内の所内負荷を運転させるためのものであり、エネルギー貯蔵給電ユニットは、エネルギー貯蔵設備、エネルギー貯蔵設備交直変換装置、エネルギー貯蔵設備断路スイッチ、エネルギー貯蔵昇圧変圧器及びエネルギー貯蔵系統連系スイッチを有する。本考案により提供される技術案は、エネルギー貯蔵給電ユニットを火力発電ユニット予備変圧器低圧側に直接設置することにより、安定電圧源として火力発電ユニットに並列接続され、電力網の周波数調整過程に参加するとともに、所内４００Ｖ負荷予備電源として火力発電所への給電の信頼性を向上させることができる。 The present invention provides a thermal power generation high voltage directly connected energy storage standby station power supply system. Here, the thermal power generation high voltage directly connected energy storage reserve station power supply system includes a thermal power grid connection standby transformer unit, an energy storage power supply unit and a thermal power station internal unit, and the thermal power generation grid connection standby transformer unit is an energy storage The power supply unit and the thermal power plant internal unit are respectively connected, the energy storage power supply unit is connected to the thermal power plant internal unit, the thermal power grid interconnection standby transformer unit has a generator, and the thermal power grid interconnection standby transformer unit is for generating electricity using the generator, and the energy storage and power supply unit is for supplying power to the unit in the thermal power plant when the generator stops due to a blackout in the power grid, and the unit in the thermal power plant is , is for receiving electric energy provided by the energy storage and power supply unit to operate the on-site load in the unit in the thermal power plant, the energy storage and power supply unit comprising an energy storage facility, an energy storage facility AC/DC converter, It has an energy storage facility disconnect switch, an energy storage step-up transformer and an energy storage grid connection switch. The technical solution provided by the present invention is to install the energy storage and feeding unit directly on the low voltage side of the thermal power unit standby transformer, so that it can be connected in parallel with the thermal power unit as a stable voltage source and participate in the frequency regulation process of the power grid. At the same time, it is possible to improve the reliability of power supply to a thermal power plant as an in-house 400V load standby power source.
以下、図面を参照しながら、本考案実施例の火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを説明する。 The thermal power high voltage directly connected energy storage standby station power supply system according to the embodiment of the present invention will be described below with reference to the drawings.
図１は本考案の一実施例により提供される火力発電高圧直掛けエネルギー貯蔵予備所内電源システムのブロック図であり、図１に示すように、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムは、火力発電系統連系予備変圧器ユニット１、エネルギー貯蔵給電ユニット２及び火力発電所内ユニット３を備える。
火力発電系統連系予備変圧器ユニット１はエネルギー貯蔵給電ユニット２及び火力発電所内ユニット３にそれぞれ接続され、エネルギー貯蔵給電ユニット２は火力発電所内ユニット３に接続される。
FIG. 1 is a block diagram of a thermal power high voltage direct-connected energy storage reserve power system provided by an embodiment of the present invention. As shown in FIG. It comprises a thermal power grid interconnection standby transformer unit 1 , an energy storage power supply unit 2 and a thermal power plant internal unit 3 .
The thermal power grid interconnection standby transformer unit 1 is connected to the energy storage and power supply unit 2 and the thermal power plant internal unit 3 , and the energy storage and power supply unit 2 is connected to the thermal power plant internal unit 3 .
本考案の実施例において、火力発電系統連系予備変圧器ユニット１は発電するための発電機１－１を有する。
エネルギー貯蔵給電ユニット２は、電力網の停電により発電機１－１が停止する時、火力発電所内ユニット３に給電するためのものである。
火力発電所内ユニット３は、エネルギー貯蔵給電ユニット２により提供された電気エネルギーを受け取ることで、火力発電所内ユニット内の所内負荷３－１を運転させるためのものである。
なお、図２に示すように、エネルギー貯蔵給電ユニット２は、エネルギー貯蔵設備２－１、エネルギー貯蔵設備交直変換装置２－２、エネルギー貯蔵設備断路スイッチ２－３、エネルギー貯蔵昇圧変圧器２－４、エネルギー貯蔵系統連系スイッチ２－５及び所内予備母線２－６を有する。
In the embodiment of the present invention, the thermal power grid interconnection standby transformer unit 1 has a generator 1-1 for generating electricity.
The energy storage and power supply unit 2 is for powering the unit 3 in the thermal power plant when the generator 1-1 stops due to a power grid failure.
The thermal power plant internal unit 3 is for receiving the electric energy provided by the energy storage and power supply unit 2 to operate the internal load 3-1 within the thermal power plant internal unit.
As shown in FIG. 2, the energy storage power supply unit 2 includes an energy storage facility 2-1, an energy storage facility AC/DC converter 2-2, an energy storage facility disconnect switch 2-3, and an energy storage step-up transformer 2-4. , an energy storage system interconnection switch 2-5 and an on-site standby bus 2-6.
ここで、エネルギー貯蔵設備交直変換装置２－２、エネルギー貯蔵設備断路スイッチ２－３、エネルギー貯蔵昇圧変圧器２－４及びエネルギー貯蔵系統連系スイッチ２－５は順次接続され、エネルギー貯蔵設備交直変換装置２－２はエネルギー貯蔵設備２－１に接続され、所内予備母線２－６の一端はエネルギー貯蔵昇圧変圧器２－４に接続され、所内予備母線２－６の他端は火力発電所内ユニット３に接続され、ここで、所内予備母線２－６は４００Ｖ電圧の所内予備母線であってもよい。 Here, the energy storage equipment AC/DC converter 2-2, the energy storage equipment disconnecting switch 2-3, the energy storage step-up transformer 2-4, and the energy storage system interconnection switch 2-5 are connected in order, and the energy storage equipment AC/DC conversion The device 2-2 is connected to the energy storage facility 2-1, one end of the on-site standby bus 2-6 is connected to the energy storage step-up transformer 2-4, and the other end of the on-site standby bus 2-6 is connected to the thermal power plant internal unit 3, where the local standby bus 2-6 may be a local standby bus with a voltage of 400V.
なお、エネルギー貯蔵設備交直変換装置２－２は、エネルギー貯蔵設備２－１から発電された低圧直流電流を低圧交流電流に変換するためのものである。 The energy storage facility AC/DC converter 2-2 is for converting the low-voltage DC current generated from the energy storage facility 2-1 into a low-voltage AC current.
例示的に、エネルギー貯蔵設備２－１は電気エネルギーを出力し、エネルギー貯蔵設備交直変換装置２－２によって、出力された電気エネルギーを低圧直流電流から低圧交流電流に変換し、且つエネルギー貯蔵設備断路スイッチ２－３をオンにし、高圧電気エネルギーを提供する必要がある時、エネルギー貯蔵昇圧変圧器２－４によって低圧交流電流を昇圧して高圧交流電流を得て、エネルギー貯蔵系統連系スイッチ２－５によって高圧交流電流を予備変圧器低圧側第２分岐母線１－６に搬送し、低圧電気エネルギーを必要とする時、所内予備母線２－６を介して火力発電所内ユニット３に接続する。 Exemplarily, the energy storage equipment 2-1 outputs electrical energy, the energy storage equipment AC/DC conversion device 2-2 converts the output electrical energy from low voltage direct current to low voltage alternating current, and disconnects the energy storage equipment. When the switch 2-3 is turned on to provide high-voltage electrical energy, the energy storage step-up transformer 2-4 boosts the low-voltage alternating current to obtain a high-voltage alternating current, and the energy storage grid connection switch 2- 5 conveys the high-voltage alternating current to the standby transformer low-voltage side second branch bus 1-6, and when low-voltage electrical energy is required, it is connected to the thermal power plant internal unit 3 via the on-site standby bus 2-6.
本考案の実施例において、エネルギー貯蔵給電ユニット２はさらに、発電機１－１が無負荷状態にあるときに火力発電系統連系予備変圧器ユニット１に給電する。 In an embodiment of the present invention, the energy storage and feeding unit 2 further feeds the thermal power grid interconnection standby transformer unit 1 when the generator 1-1 is in no-load condition.
例示的に、電力網の停電により発電機１－１が無負荷状態になる時、火力発電系統連系予備変圧器ユニット１内の火力発電系統連系母線１－２の電圧は迅速に低下し、火力発電ユニットへの給電を再開するために、図５に示すように、エネルギー貯蔵給電ユニット２内のエネルギー貯蔵系統連系スイッチ２－５はオンにされ、分割巻線予備変圧器１－４によって発電機１－１に給電し、これによって火力発電ユニットの運転を再開する。 As an example, when the generator 1-1 becomes unloaded due to a power grid outage, the voltage of the thermal power grid interconnection bus 1-2 in the thermal power grid interconnection standby transformer unit 1 quickly drops, To resume power supply to the thermal power generation unit, as shown in FIG. Power is supplied to generator 1-1, thereby resuming operation of the thermal power unit.
本考案の実施例において、エネルギー貯蔵給電ユニット２はさらに、発電機１－１の通常運転時に、周波数変調命令に従ってエネルギー貯蔵系統連系スイッチ２－５をオンにすることで周波数変調を行う。 In the embodiment of the present invention, the energy storage and feeding unit 2 further performs frequency modulation by turning on the energy storage grid connection switch 2-5 according to the frequency modulation command during normal operation of the generator 1-1.
なお、エネルギー貯蔵設備交直変換装置２－２を制御してエネルギー貯蔵設備２－１の動作状態を制御することにより、周波数変調命令に応答し、ここで、エネルギー貯蔵設備交直変換装置２－２を制御する場合、垂下制御の方法を用いて、有効及び無効な非干渉制御を実現することができる。 In addition, by controlling the energy storage facility AC/DC converter 2-2 to control the operation state of the energy storage facility 2-1, it responds to the frequency modulation command, and here, the energy storage facility AC/DC converter 2-2 is When controlling, the method of droop control can be used to achieve effective and ineffective decoupling control.
いくつかの実施例において、垂下制御の方法を用いて、有効及び無効な非干渉制御を実現する時、具体的に、以下の式により有効－角周波数及び無効－電圧に対する垂下制御を実現することができる。
ここで、ωはエネルギー貯蔵設備交直変換装置２－２の出力電圧角周波数であり、Ｕはエネルギー貯蔵設備交直変換装置２－２の出力電圧振幅であり、ω０はエネルギー貯蔵設備交直変換装置２－２の無負荷出力電圧角周波数参照値であり、Ｕ０はエネルギー貯蔵設備交直変換装置２－２の無負荷出力電圧振幅参照値であり、ｍは有効電力垂下係数であり、ｎは無効電力垂下係数であり、Ｐはエネルギー貯蔵設備交直変換装置２－２に接続される負荷に分配される有効電力であり、Ｑはエネルギー貯蔵設備交直変換装置２－２に接続される負荷に分配される無効電力である。 Here, ω is the output voltage angular frequency of the energy storage facility AC/DC converter 2-2, U is the output voltage amplitude of the energy storage facility AC/DC converter 2-2, and ω0 is the energy storage facility AC/DC converter 2. -2 is the no-load output voltage angular frequency reference value, U0 is the no-load output voltage amplitude reference value of the energy storage equipment AC/DC converter 2-2, m is the active power droop coefficient, and n is the reactive power is the droop coefficient, P is the active power distributed to the load connected to the energy storage facility AC/DC converter 2-2, and Q is distributed to the load connected to the energy storage facility AC/DC converter 2-2. Reactive power.
本考案の実施例において、図３に示すように、火力発電系統連系予備変圧器ユニット１は発電機１－１以外にも、火力発電系統連系母線１－２、発電機主変圧器１－３、分割巻線予備変圧器１－４、予備変圧器低圧側第１分岐母線１－５及び予備変圧器低圧側第２分岐母線１－６をさらに有し、予備変圧器低圧側第１分岐母線１－５及び予備変圧器低圧側第２分岐母線１－６に対応する母線電圧は６ＫＶであってもよく、
ここで、発電機１－１は発電機主変圧器１－３を介して火力発電系統連系母線１－２に接続され、分割巻線予備変圧器１－４の高圧側は火力発電系統連系母線１－２に接続され、分割巻線予備変圧器１－４の低圧側は予備変圧器低圧側第１分岐母線１－５及び予備変圧器低圧側第２分岐母線１－６にそれぞれ接続される。
In the embodiment of the present invention, as shown in FIG. -3, further comprising a split winding pre-transformer 1-4, a pre-transformer low-voltage side first branch bus 1-5, and a pre-transformer low-voltage side second branch bus 1-6; The bus voltage corresponding to the branch bus 1-5 and the pre-transformer low-voltage side second branch bus 1-6 may be 6 KV,
Here, the generator 1-1 is connected to the thermal power system interconnection bus 1-2 via the generator main transformer 1-3, and the high voltage side of the split winding standby transformer 1-4 is connected to the thermal power system. The low-voltage side of the split winding pre-transformer 1-4 is connected to the pre-transformer low-voltage side first branch bus 1-5 and the pre-transformer low-voltage side second branch bus 1-6, respectively. be done.
なお、図５に示すように、エネルギー貯蔵系統連系スイッチ２－５は予備変圧器低圧側第２分岐母線１－６に接続される。 As shown in FIG. 5, the energy storage system interconnection switch 2-5 is connected to the standby transformer low-voltage side second branch bus 1-6.
本考案の実施例において、図４に示すように、火力発電所内ユニット３は、所内負荷３－１、高圧所内変圧器母線３－２、分割巻線高圧所内変圧器３－３、高圧所内変圧器低圧側第１分岐母線３－４、高圧所内変圧器低圧側第２分岐母線３－５、低圧所内系統連系スイッチ３－６、二重巻線低圧所内変圧器３－７、所内母線３－８、低圧予備給電スイッチ３－９及び低圧負荷スイッチ３－１０を有する。図５に示すように、分割巻線高圧所内変圧器３－３の高圧側は高圧所内変圧器母線３－２により発電機１－１の出口に接続され、分割巻線高圧所内変圧器３－３の低圧側は高圧所内変圧器低圧側第１分岐母線３－４及び高圧所内変圧器低圧側第２分岐母線３－５にそれぞれ接続され、高圧所内変圧器低圧側第２分岐母線３－５は低圧所内系統連系スイッチ３－６により二重巻線低圧所内変圧器３－７に接続され、二重巻線低圧所内変圧器３－７は所内母線３－８に接続され、所内負荷３－１は低圧負荷３－１－１を有し、低圧負荷３－１－１は低圧負荷スイッチ３－１０により所内母線３－８に接続され、ここで、低圧負荷３－１－１は４００Ｖ所内電力負荷であってもよい。 In the embodiment of the present invention, as shown in FIG. 4, the unit 3 in the thermal power station includes a station load 3-1, a high-voltage station transformer busbar 3-2, a split-winding high-voltage station transformer 3-3, a high-voltage station transformer Unit low-voltage side first branch bus 3-4, high-voltage station transformer low-voltage side second branch bus 3-5, low-voltage station grid connection switch 3-6, double winding low-voltage station transformer 3-7, station bus 3 -8, a low voltage pre-power switch 3-9 and a low voltage load switch 3-10. As shown in FIG. 5, the high voltage side of the split winding high voltage substation transformer 3-3 is connected to the outlet of the generator 1-1 by the high voltage substation transformer bus 3-2, and the split winding high voltage substation transformer 3- The low-voltage side of 3 is connected to the high-voltage station transformer low-voltage side first branch bus 3-4 and the high-voltage station transformer low-voltage side second branch bus 3-5, respectively, and the high-voltage station transformer low-voltage side second branch bus 3-5. is connected to a double-winding low-voltage station transformer 3-7 by a low-voltage station interconnection switch 3-6, and the double-winding low-voltage station transformer 3-7 is connected to a station bus 3-8, and a station load 3 -1 has a low voltage load 3-1-1 which is connected to the station bus 3-8 by a low voltage load switch 3-10, where the low voltage load 3-1-1 is 400V. It may be an on-site power load.
なお、図５に示すように、分割巻線高圧所内変圧器３－３の高圧側は高圧所内変圧器母線３－２により予備変圧器低圧側第１分岐母線１－５に接続され、分割巻線高圧所内変圧器３－３の低圧側は高圧所内変圧器低圧側第１分岐母線３－４及び高圧所内変圧器低圧側第２分岐母線３－５にそれぞれ接続される。 As shown in FIG. 5, the high voltage side of the split winding high voltage station transformer 3-3 is connected to the pre-transformer low voltage side first branch bus 1-5 by the high voltage station transformer bus 3-2. The low voltage side of the line high voltage station transformer 3-3 is connected to the high voltage station transformer low voltage side first branch bus 3-4 and the high voltage station transformer low voltage side second branch bus 3-5, respectively.
さらに、火力発電所内ユニット３は、高圧第１負荷スイッチ３－１１及び高圧第２負荷スイッチ３－１２をさらに有する。
所内負荷３－１は、火力発電所内高圧一類負荷３－１－２及び火力発電所内高圧二類負荷３－１－３をさらに有する。
火力発電所内高圧一類負荷３－１－２は高圧第１負荷スイッチ３－１１により高圧所内変圧器低圧側第１分岐母線３－４に接続され、火力発電所内高圧二類負荷３－１－３は高圧第２負荷スイッチ３－１２により高圧所内変圧器低圧側第２分岐母線３－５に接続され、なお、図５に示すように、エネルギー貯蔵給電ユニット２は低圧予備給電スイッチ３－９により所内母線３－８に接続される。
Further, the thermal power plant internal unit 3 further has a high voltage first load switch 3-11 and a high voltage second load switch 3-12.
The on-site load 3-1 further includes a thermal power plant internal high voltage class 1 load 3-1-2 and a thermal power plant internal high voltage class 2 load 3-1-3.
The thermal power plant high voltage first class load 3-1-2 is connected to the high voltage transformer low voltage side first branch bus 3-4 by the high voltage first load switch 3-11, and the thermal power plant high voltage second class load 3-1-3. is connected to the low-voltage side second branch bus 3-5 of the high-voltage station transformer by a high-voltage second load switch 3-12, and as shown in FIG. It is connected to the in-house bus 3-8.
本考案の実施例において、図５に示すように、火力発電系統連系予備変圧器ユニット１はさらに、電力網の停電により発電機１－１が停止する時、エネルギー貯蔵給電ユニット２により提供された電気エネルギーを火力発電所内ユニット３に逆送電する。 In the embodiment of the present invention, as shown in FIG. 5, the thermal power grid connection standby transformer unit 1 is further provided by the energy storage and feeding unit 2 when the generator 1-1 stops due to power grid blackout. The electrical energy is transmitted back to the unit 3 in the thermal power plant.
例示的に、電力網の停電により発電機１－１が停止する時、エネルギー貯蔵給電ユニット２により提供された電気エネルギーを火力発電所内ユニット３に逆送電して、火力発電所内ユニット３内の火力発電所内高圧一類負荷３－１－２又は火力発電所内高圧二類負荷３－１－３に電気エネルギーを提供する。 Exemplarily, when the power generator 1-1 stops due to a power grid outage, the electrical energy provided by the energy storage and power supply unit 2 is transmitted back to the thermal power plant internal unit 3 to generate thermal power within the thermal power plant internal unit 3. It provides electric energy to the high voltage class 1 load 3-1-2 in the station or the high voltage class 2 load 3-1-3 in the thermal power plant.
本考案の実施例において、エネルギー貯蔵給電ユニット２はさらに、火力発電所内ユニット３内の低圧負荷３－１－１が電気エネルギーを必要とする場合、エネルギー貯蔵系統連系スイッチ２－５を遮断し、低圧予備給電スイッチ３－９をオンにし、低圧負荷３－１－１に電気エネルギーを提供する。 In the embodiment of the present invention, the energy storage and power supply unit 2 further cuts off the energy storage grid connection switch 2-5 when the low voltage load 3-1-1 in the thermal power plant internal unit 3 needs electrical energy. , turns on the low-voltage standby power switch 3-9 to provide electrical energy to the low-voltage load 3-1-1.
本考案の実施例において、エネルギー貯蔵系統連系スイッチ２－５と低圧予備給電スイッチ３－９との間には閉鎖スイッチが設置されている。 In the embodiment of the present invention, a closing switch is installed between the energy storage grid connection switch 2-5 and the low voltage standby power supply switch 3-9.
例示的に、エネルギー貯蔵系統連系スイッチ２－５をオンにした場合、低圧予備給電スイッチ３－９は閉鎖状態にあり、常に遮断されている。低圧予備給電スイッチ３－９をオンにした場合、エネルギー貯蔵系統連系スイッチ２－５が閉鎖状態にあり、常に遮断されており、同時に開通状態にあることによって合環運転が発生してエネルギー貯蔵設備２－１に損傷することを回避する。 Illustratively, when the energy storage grid connection switch 2-5 is turned on, the low voltage standby power supply switch 3-9 is in a closed state and is always cut off. When the low-voltage standby power supply switch 3-9 is turned on, the energy storage grid connection switch 2-5 is in the closed state, is always cut off, and is in the open state at the same time. Avoid damaging equipment 2-1.
なお、火力発電系統連系予備変圧器ユニット１は、発電機１－１に付属する補助機械をさらに有する。
補助機械は水循環ポンプ、油循環ポンプ、石炭ミル及びボイラなどの設備を有し、補助機械は石炭を機械エネルギーに変換するために使用され、発電機１－１は機械エネルギーを電気エネルギーに変換し、補助機械は発電機１－１とともに火力発電ユニットを構成し、電力網が停電すると、補助機械が停止するため、発電機１－１が停止し、すなわち火力発電ユニットが停止する。
The thermal power generation system interconnection standby transformer unit 1 further has an auxiliary machine attached to the generator 1-1.
Auxiliary machines have facilities such as water circulation pumps, oil circulation pumps, coal mills and boilers, auxiliary machines are used to convert coal into mechanical energy, and generator 1-1 converts mechanical energy into electrical energy. , the auxiliary machine constitutes a thermal power generation unit together with the generator 1-1, and when the power grid fails, the auxiliary machine stops, so the generator 1-1 stops, that is, the thermal power generation unit stops.
火力発電系統連系予備変圧器ユニット１により生成された電気エネルギーは送電回路を介してユーザ側の負荷に提供され、火力発電系統連系予備変圧器ユニット１により生成された電気エネルギーはさらに火力発電所内ユニット３内の所内負荷３－１に提供することができる。 The electrical energy generated by the thermal power grid interconnection standby transformer unit 1 is provided to the load on the user side through the power transmission circuit, and the electrical energy generated by the thermal power grid interconnection standby transformer unit 1 is further supplied to thermal power generation. It can be provided to the on-site load 3-1 in the on-site unit 3.
例示的に、エネルギー貯蔵設備２－１が火力発電ユニットと連携して電力網周波数命令に応答する時、エネルギー貯蔵系統連系スイッチ２－５をオンにし、低圧予備給電スイッチ３－９は閉鎖状態にあるので、オンにすることができず、常に遮断状態にある。 Exemplarily, when the energy storage facility 2-1 cooperates with the thermal power generation unit to respond to the power grid frequency command, the energy storage grid connection switch 2-5 is turned on, and the low voltage standby power supply switch 3-9 is closed. Therefore, it cannot be turned on and is always shut off.
４００Ｖ所内負荷、すなわち低圧負荷３－１－１が、エネルギー貯蔵設備２－１による給電を必要とする時、低圧予備給電スイッチ３－９をオンにし、エネルギー貯蔵系統連系スイッチ２－５が閉鎖状態にあるので、オンにすることができず、常に遮断状態にあり、エネルギー貯蔵設備２－１が４００Ｖ所内負荷に給電することを実現する。 When the 400V on-site load, that is, the low-voltage load 3-1-1 requires power supply from the energy storage facility 2-1, the low-voltage standby power supply switch 3-9 is turned on, and the energy storage system interconnection switch 2-5 is closed. Since it is in the state, it cannot be turned on and is always in the cut-off state, realizing that the energy storage equipment 2-1 supplies power to the 400V on-site load.
以上により、本実施例は、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムであって、火力発電系統連系予備変圧器ユニット、エネルギー貯蔵給電ユニット及び火力発電所内ユニットを備え、前記火力発電系統連系予備変圧器ユニットが、前記エネルギー貯蔵給電ユニット及び火力発電所内ユニットにそれぞれ接続され、前記火力発電系統連系予備変圧器ユニットが、発電機を有し、前記火力発電系統連系予備変圧器ユニットが、前記発電機を用いて発電するためのものであり、前記エネルギー貯蔵給電ユニットが、電力網の停電により前記発電機が停止する時に、前記火力発電所内ユニットに給電するためのものであり、前記火力発電所内ユニットが、所内負荷を有し、前記火力発電所内ユニットは、前記エネルギー貯蔵給電ユニットにより提供された電気エネルギーを用いて前記所内負荷を起動するためのものであり、ここで、前記エネルギー貯蔵給電ユニットは、エネルギー貯蔵設備、エネルギー貯蔵設備交直変換装置、エネルギー貯蔵設備断路スイッチ、エネルギー貯蔵昇圧変圧器及びエネルギー貯蔵系統連系スイッチを有する、火力発電高圧直掛けエネルギー貯蔵予備所内電源システムを提供する。本考案により提供される技術案は、エネルギー貯蔵給電ユニットを火力発電ユニット予備変圧器低圧側に直接設置することにより、安定電圧源として火力発電ユニットに並列接続され、電力網の周波数調整過程に参加するとともに、エネルギー貯蔵設備を４００Ｖ所内負荷予備電源とし、火力発電所の所内負荷双電源給電の要旨に一致し、設備の安定性を実現することができ、さらに、４００Ｖ所内負荷予備電源は、電圧変動の影響を受けやすいので、多くは周波数変換装置であり、そのため、４００Ｖ母線電圧が常に変動し、設備の安定的な運転に不利であり、４００Ｖ所内負荷予備電源を用いることも４００Ｖ母線電圧の安定性を向上させて、負荷に給電する信頼性を向上させることができる。 As described above, the present embodiment provides a thermal power generation high voltage directly connected energy storage backup station power supply system, comprising a thermal power generation system interconnection standby transformer unit, an energy storage power supply unit, and a thermal power station internal unit. A system standby transformer unit is connected to the energy storage and feeding unit and the unit in the thermal power plant respectively, the thermal power system interconnection standby transformer unit has a generator, and the thermal power system interconnection standby transformer unit is for generating electricity using the generator, and the energy storage and power supply unit is for supplying power to the unit in the thermal power plant when the generator stops due to a power grid failure, and A thermal power plant internal unit has an internal load, said thermal power plant internal unit is for starting said internal load using electrical energy provided by said energy storage and feeding unit, wherein said energy The storage and power supply unit provides a thermal power high voltage direct-connected energy storage backup station power supply system, comprising an energy storage facility, an energy storage facility AC/DC converter, an energy storage facility disconnect switch, an energy storage step-up transformer and an energy storage grid connection switch. do. The technical solution provided by the present invention is to install the energy storage and feeding unit directly on the low voltage side of the thermal power unit standby transformer, so that it can be connected in parallel with the thermal power unit as a stable voltage source and participate in the frequency regulation process of the power grid. At the same time, the energy storage equipment can be used as a 400V on-site load standby power supply, which is consistent with the gist of the on-site load dual power supply of thermal power plants, and can achieve the stability of the equipment. Therefore, many of them are frequency converters, so the 400V bus voltage always fluctuates, which is disadvantageous for stable operation of the equipment. This can improve the reliability of powering the load.
本明細書の説明では、「一実施例」、「いくつかの実施例」、「例」、「具体的な例」、又は「いくつかの例」などの参考用語の説明は、実施例又は例に合わせて説明される具体的な特徴、構造、材料又は特点が本考案の少なくとも１つの実施例又は例に含まれることを指す。本明細書では、上記用語に対する例示的な説明は、必ずしも同じ実施例又は例を指すとは限らない。そして、説明される具体的な特徴、構造、材料又は特点はいずれか１つ又は複数の実施例又は例において適切な方式で組み合わせることができる。 In the present description, descriptions of reference terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples" refer to the embodiment or Refers to inclusion of a particular feature, structure, material or feature described for an example in at least one embodiment or example of the present invention. In this specification, exemplary statements for such terms do not necessarily refer to the same embodiment or example. And the specific features, structures, materials or features described may be combined in any suitable manner in any one or more embodiments or examples.
フローチャート又はここで他の方式で説明される如何なるプロセス又は方法の説明は、特定の論理機能又はプロセスを実現するための１つ又は複数のステップにより実行可能な命令のコードを表すモジュール、フラグメント又は部分として理解することができ、そして、本考案の好ましい実施形態の範囲は他の実現を含み、ここで、示された又は議論された順序に従わずに、関連する機能に応じて基本的同時の方式又は逆の順序に従って機能を実行することを含み、これは、当業者によって理解されるべきである。 Any process or method description illustrated in a flow chart or otherwise herein may be viewed as a module, fragment or portion representing code of instructions executable by one or more steps for performing a particular logical function or process. and the scope of preferred embodiments of the invention includes other implementations, not according to the order shown or discussed herein, but essentially concurrently, depending on the functionality involved. Including performing functions in order or in reverse order, this should be understood by those skilled in the art.
以上は本考案の実施例を示しかつ説明したが、上記実施例は例示的なものであり、本考案への限定として理解されるものではなく、当業者であれば、本考案の範囲内で上記実施例に対して変化、修正、入れ替え及び変形を行うことができる。 While the foregoing has shown and described embodiments of the present invention, the foregoing embodiments are intended to be illustrative and not to be construed as limitations on the present invention, which those skilled in the art will appreciate within the scope of the present invention. Changes, modifications, permutations and variations can be made to the above embodiments.
１ 火力発電系統連系予備変圧器ユニット
２ エネルギー貯蔵給電ユニット
３ 火力発電所内ユニット
１－１ 発電機
１－２ 火力発電系統連系母線
１－３ 発電機主変圧器
１－４ 分割巻線予備変圧器
１－５ 予備変圧器低圧側第１分岐母線
１－６ 予備変圧器低圧側第２分岐母線
２－１ エネルギー貯蔵設備
２－２ エネルギー貯蔵設備交直変換装置
２－３ エネルギー貯蔵設備断路スイッチ
２－４ エネルギー貯蔵昇圧変圧器
２－５ エネルギー貯蔵系統連系スイッチ
２－６ 所内予備母線
３－１ 所内負荷
３－２ 高圧所内変圧器母線
３－３ 分割巻線高圧所内変圧器
３－４ 高圧所内変圧器低圧側第１分岐母線
３－５ 高圧所内変圧器低圧側第２分岐母線
３－６ 低圧所内系統連系スイッチ
３－７ 二重巻線低圧所内変圧器
３－８ 所内母線
３－９ 低圧予備給電スイッチ
３－１０ 低圧負荷スイッチ
３－１－１ 低圧負荷
３－１－２ 火力発電所内高圧一類負荷
３－１－３ 火力発電所内高圧二類負荷
３－１１ 高圧第１負荷スイッチ
３－１２ 高圧第２負荷スイッチ
1 Thermal power grid interconnection standby transformer unit 2 Energy storage power supply unit 3 Unit in thermal power plant 1-1 Generator 1-2 Thermal power grid interconnection bus 1-3 Generator main transformer 1-4 Split winding standby transformer Unit 1-5 Pre-transformer low-voltage side first branch bus 1-6 Pre-transformer low-voltage side second branch bus 2-1 Energy storage facility 2-2 Energy storage facility AC/DC converter 2-3 Energy storage facility disconnect switch 2- 4 Energy storage step-up transformer 2-5 Energy storage grid connection switch 2-6 Station backup bus 3-1 Station load 3-2 High voltage station transformer bus 3-3 Split winding high voltage station transformer 3-4 High voltage station transformer Unit low-voltage side 1st branch bus 3-5 High-voltage station transformer low-voltage side 2nd branch bus 3-6 Low-voltage station grid connection switch 3-7 Double winding low-voltage station transformer 3-8 Station bus 3-9 Low-voltage spare Power supply switch 3-10 Low voltage load switch 3-1-1 Low voltage load 3-1-2 High voltage class 1 load in thermal power plant 3-1-3 High voltage class 2 load in thermal power plant 3-11 High voltage first load switch 3-12 High voltage Second load switch
Claims (10)
火力発電系統連系予備変圧器ユニット、エネルギー貯蔵給電ユニット及び火力発電所内ユニットを備え、
前記火力発電系統連系予備変圧器ユニットが、前記エネルギー貯蔵給電ユニット及び前記火力発電所内ユニットにそれぞれ接続され、
前記エネルギー貯蔵給電ユニットが、前記火力発電所内ユニットに接続され、
前記火力発電系統連系予備変圧器ユニットが、発電するための発電機を有し、
前記エネルギー貯蔵給電ユニットが、電力網の停電により前記発電機が停止する時に、前記火力発電所内ユニットに給電するためのものであり、
前記火力発電所内ユニットが、前記エネルギー貯蔵給電ユニットにより提供された電気エネルギーを受け取ることで、前記火力発電所内ユニット内の所内負荷を運転させるためのものであり、
前記エネルギー貯蔵給電ユニットが、エネルギー貯蔵設備、エネルギー貯蔵設備交直変換装置、エネルギー貯蔵設備断路スイッチ、エネルギー貯蔵昇圧変圧器及びエネルギー貯蔵系統連系スイッチを有する、ことを特徴とする火力発電高圧直掛けエネルギー貯蔵予備所内電源システム。 A power supply system in a thermal power generation high voltage directly connected energy storage reserve station,
Equipped with a thermal power grid connection standby transformer unit, an energy storage power supply unit and a thermal power plant internal unit,
The thermal power grid interconnection standby transformer unit is connected to the energy storage and power supply unit and the thermal power plant internal unit, respectively,
wherein the energy storage and feeding unit is connected to the unit in the thermal power plant;
The thermal power grid interconnection standby transformer unit has a generator for generating power,
wherein said energy storage and feeding unit is for feeding said unit in a thermal power plant when said generator stops due to a power grid outage;
for the thermal power plant internal unit to receive electrical energy provided by the energy storage and power supply unit to operate an internal load within the thermal power plant internal unit;
Thermal power generation high voltage directly connected energy, wherein the energy storage and power supply unit has an energy storage facility, an energy storage facility AC/DC converter, an energy storage facility disconnect switch, an energy storage step-up transformer, and an energy storage grid connection switch. Power supply system in the storage reserve.
前記発電機が前記発電機主変圧器により前記火力発電系統連系母線に接続され、
前記分割巻線予備変圧器の高圧側が前記火力発電系統連系母線に接続され、前記分割巻線予備変圧器の低圧側が前記予備変圧器低圧側第１分岐母線及び前記予備変圧器低圧側第２分岐母線にそれぞれ接続される、ことを特徴とする請求項２に記載の火力発電高圧直掛けエネルギー貯蔵予備所内電源システム。 The thermal power system interconnection standby transformer unit includes a thermal power system interconnection bus, a generator main transformer, a split winding standby transformer, a standby transformer low-voltage side first branch bus, and a standby transformer low-voltage side second branch. further having a busbar;
The generator is connected to the thermal power system interconnection bus by the generator main transformer,
The high voltage side of the split winding pre-transformer is connected to the thermal power generation system interconnection bus, and the low voltage side of the split winding pre-transformer is connected to the pre-transformer low-voltage side first branch bus and the pre-transformer low-voltage side second branch bus. 3. The system of claim 2, wherein the thermal power high voltage direct hookup energy storage standby station power supply system is connected to the branch bus respectively.
前記エネルギー貯蔵設備交直変換装置が前記エネルギー貯蔵設備に接続され、
前記エネルギー貯蔵系統連系スイッチが前記予備変圧器低圧側第２分岐母線に接続され、
前記エネルギー貯蔵設備交直変換装置が前記エネルギー貯蔵設備から発電された低圧直流電流を低圧交流電流に変換するためのものである、ことを特徴とする請求項３に記載の火力発電高圧直掛けエネルギー貯蔵予備所内電源システム。 The energy storage facility AC/DC converter, the energy storage facility disconnect switch, the energy storage step-up transformer and the energy storage system interconnection switch are connected in sequence,
The energy storage facility AC/DC converter is connected to the energy storage facility,
the energy storage system interconnection switch is connected to the standby transformer low-voltage side second branch bus,
4. The thermal power generation high voltage directly connected energy storage according to claim 3, wherein said energy storage equipment AC/DC converter is for converting low voltage DC current generated from said energy storage equipment into low voltage AC current. Standby power supply system.
該所内予備母線の一端が前記エネルギー貯蔵昇圧変圧器に接続され、前記所内予備母線の他端が前記火力発電所内ユニットに接続される、ことを特徴とする請求項４に記載の火力発電高圧直掛けエネルギー貯蔵予備所内電源システム。 The energy storage and feeding unit further comprises an on-site standby busbar,
5. The thermal power generation high voltage transformer according to claim 4, wherein one end of said on-site standby bus is connected to said energy storage step-up transformer, and the other end of said on-site standby bus is connected to said thermal power plant internal unit. The power system in the hanging energy storage reserve station.
前記分割巻線高圧所内変圧器の高圧側が前記高圧所内変圧器母線により前記発電機の出口に接続され、前記分割巻線高圧所内変圧器の低圧側が前記高圧所内変圧器低圧側第１分岐母線及び前記高圧所内変圧器低圧側第２分岐母線にそれぞれ接続され、
前記高圧所内変圧器低圧側第２分岐母線が前記低圧所内系統連系スイッチにより前記二重巻線低圧所内変圧器に接続され、
前記二重巻線低圧所内変圧器が前記所内母線に接続され、
前記所内負荷は低圧負荷を有し、該低圧負荷が前記低圧負荷スイッチにより前記所内母線に接続され、
前記エネルギー貯蔵給電ユニットが前記低圧予備給電スイッチにより前記所内母線に接続される、ことを特徴とする請求項５に記載の火力発電高圧直掛けエネルギー貯蔵予備所内電源システム。 The unit in the thermal power station comprises the station load, the high-voltage station transformer bus, the split-winding high-voltage station transformer, the high-voltage station transformer low-voltage side first branch bus, the high-voltage station transformer low-voltage side second branch bus, and the low-voltage station system. It has an interconnection switch, a double-wound low-voltage station transformer, a station bus, a low-voltage backup power supply switch and a low-voltage load switch,
A high voltage side of the split winding high voltage station transformer is connected to an outlet of the generator by the high voltage station transformer busbar, and a low voltage side of the split winding high voltage station transformer is connected to a low voltage side first branch busbar of the high voltage station transformer and a first branch busbar of the high voltage station transformer. connected to the high-voltage station transformer low-voltage side second branch bus,
the high-voltage station transformer low-voltage side second branch bus is connected to the double-winding low-voltage station transformer by the low-voltage station system interconnection switch;
the double-wound low-voltage station transformer is connected to the station bus,
the station load has a low voltage load, the low voltage load is connected to the station bus by the low voltage load switch;
6. The system of claim 5, wherein said energy storage and feeding unit is connected to said on-site bus by said low voltage standby power switch.
前記所内負荷が、火力発電所内高圧一類負荷及び火力発電所内高圧二類負荷をさらに有し、
前記火力発電所内高圧一類負荷が前記高圧第１負荷スイッチにより前記高圧所内変圧器低圧側第１分岐母線に接続され、
前記火力発電所内高圧二類負荷が前記高圧第２負荷スイッチにより前記高圧所内変圧器低圧側第２分岐母線に接続される、ことを特徴とする請求項６に記載の火力発電高圧直掛けエネルギー貯蔵予備所内電源システム。 The thermal power plant internal unit further comprises a high voltage first load switch and a high voltage second load switch,
The on-site load further includes a thermal power plant high voltage class 1 load and a thermal power plant high voltage class 2 load,
The first class high voltage load in the thermal power plant is connected to the first branch bus on the low voltage side of the transformer in the high voltage station by the first high voltage load switch,
7. The thermal power plant high voltage directly connected energy storage according to claim 6, wherein the high voltage second class load in the thermal power plant is connected to the low voltage side second branch bus of the high voltage transformer in the high voltage station by the second high voltage load switch. Standby power supply system.
10. The system of claim 9, wherein a closing switch is installed between said energy storage grid connection switch and said low voltage standby power supply switch.
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