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GIS (Gas Insulated Switchgear) voltage reduction integrated system for thermal power plant

A thermal power plant and functional technology, applied in control/regulation systems, electrical components, circuit devices, etc., can solve problems such as large land occupation and inability to connect equipment together, achieve simple protection judgment logic, reduce land occupation, and facilitate The effect of overhaul

Pending Publication Date: 2022-04-29
HUANENG HAINAN POWER INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, power plants generally use step-down transformers for power consumption, and step-down transformers occupy a large area and cannot be integrated with subsequent GIS equipment.

Method used

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  • GIS (Gas Insulated Switchgear) voltage reduction integrated system for thermal power plant

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Embodiment Construction

[0033] The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings.

[0034] Such as figure 1 As shown, a kind of thermal power plant factory-use GIS step-down integration system provided by the present invention includes: factory-use AC 6.3kV unit 1 and factory-use GIS step-down integration unit 2; in the factory-use AC 6.3kV unit 1 The 6.3kV converging AC busbar is connected to the power electronic transformer AC / DC converter device in the GIS step-down integrated unit 2 for the plant, and the step-down and power transmission are realized through the GIS step-down integrated unit 2 for the plant, and the operation The circuit breaker and isolating switchgear in the GIS step-down integrated unit 2 for the plant supply power to the load of the 400V thermal power plant for the plant.

[0035] The factory AC 6.3kV unit 1 includes: thermal power generator 1-1, thermal power unit factory 20kV / 400V step-down...

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Abstract

The invention discloses a plant GIS voltage reduction integrated system for a thermal power plant. The plant GIS voltage reduction integrated system comprises a plant AC 6.3 kV unit and a plant GIS voltage reduction integrated unit. A 6.3 kV confluence alternating current bus in the station service alternating current 6.3 kV unit is connected with a power electronic transformation AC / DC converter device in the station service GIS voltage reduction integrated unit, voltage reduction and electric energy transmission are achieved through the station service GIS voltage reduction integrated unit, and a circuit breaker and an isolation switch device in the station service GIS voltage reduction integrated unit are operated to supply power to a load for a station service 400V thermal power plant. The 6.3 kV / 400V power electronic transformer is adopted, the occupied area is effectively reduced, the power electronic transformer is added into GIS overall equipment, a plant GIS voltage reduction integrated system is constructed, and regulation and control of the plant power utilization link of a thermal power plant are more flexible.

Description

technical field [0001] The invention relates to a GIS step-down integrated system for thermal power plants, which adopts a 6.3kV / 400V power electronic transformer to effectively reduce the occupied area, adds the power electronic transformer to the overall GIS equipment, and constructs an integrated GIS step-down system for the plant system, so that the control of power consumption in thermal power plants is more flexible. Background technique [0002] Arranging gas insulated metal-enclosed switchgear (Gas Insulated Switchgear, GIS) in power plants has the advantages of high power supply reliability, less electromagnetic pollution, long maintenance cycle, and low operating noise. GIS is composed of circuit breaker, isolating switch, grounding switch, transformer, lightning arrester, busbar, connector and outlet terminal, etc. These devices or components are all enclosed in a metal grounding shell, and the inside is filled with SF6 insulation with set pressure Gas, so it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J11/00H02J3/00H02J3/38H02B13/035H02B13/055H02B7/01H02M5/42H02M5/458H02M3/335H02M1/42
CPCH02J11/00H02J3/00H02J3/38H02B13/035H02B13/055H02B7/01H02M5/42H02M5/4585H02M3/33576H02M1/4208Y02B70/10Y02P80/10
Inventor 朱雪松农正军王亚四冯海斌许义山陈敬瑞林师严关洪亮刘彩利杨小锋黄良泉蔡德帅薛菲梁舒婷李泽才杨沛豪赵俊博燕云飞孙梦瑶李志鹏
Owner HUANENG HAINAN POWER INC
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