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Grid-connected access structure of distributed photovoltaic power station and 10-kV busbar of power distribution station

A distributed photovoltaic and photovoltaic power station technology, applied in the direction of photovoltaic power generation, electrical components, single-network parallel feeding arrangement, etc., can solve problems such as low reliability, large-scale power outages, and difficulty in effectively removing faults, so as to reduce the scope of power outages Effect

Active Publication Date: 2014-03-05
STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
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Problems solved by technology

Therefore, it is imminent to study the grid-connection of electricity generated by photovoltaic power plants into the existing grid. , it is difficult to effectively remove the fault after a fault occurs

Method used

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  • Grid-connected access structure of distributed photovoltaic power station and 10-kV busbar of power distribution station
  • Grid-connected access structure of distributed photovoltaic power station and 10-kV busbar of power distribution station

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Embodiment Construction

[0023] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a grid-connected connection structure of a distributed photovoltaic power station and a 10kV busbar of a distribution station, the photovoltaic power station and a 10kV busbar of a distribution station are connected through a cable 3, including: a power station side protection device 1, an overhead line protection device 2. Among them, the power station side protection device 1 is set on the line of the cable 3 output by the photovoltaic power plant, which can ensure the reliability of power supply and reduce the scope of power failure; the system side protection device 2 is set on the line where the cable 3 connects to the 10kV bus of the distribution station , in this embodiment, the system-side protection device 2 is connected in series: a high-voltage fuse 21 and a load switc...

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Abstract

The invention discloses a grid-connected access structure of a distributed photovoltaic power station and a 10-kV busbar of a power distribution station. The photovoltaic power station is connected with the 10-kV busbar of the power distribution station through a cable, and comprises a power-station-side protective device and a system-side protective device, wherein the power-station-side protective device is arranged on the line of the output cable of the photovoltaic power station; the system-side protective device is arranged on the line of the cable which is connected to the 10-kV busbar of the power distribution station. The grid-connected access structure of the distributed photovoltaic power station and the 10-kV power grid overhead line is capable of ensuring the power supply reliability after grid connection and narrowing the power failure range, and also capable of effectively realizing fault clearing after faults occur..

Description

technical field [0001] The invention relates to a grid-connected structure for power generation to be integrated into a power grid, in particular to a grid-connected connection structure for a distributed photovoltaic power station and a 10kV busbar of a power distribution station. The capacity of a single grid-connected point of the distributed photovoltaic power generation is 300kW-6MW. Background technique [0002] Since the 20th century, especially since the 1970s, with the rapid development of the world economy, human demand for energy has doubled, and the energy industry has also developed on an unprecedented scale. However, some problems caused by this have also aroused the great attention of many countries. Countries that use coal and oil as their main primary energy sources not only face the problem of depletion of conventional energy sources, but also directly emit greenhouse gases and aerosols into the atmosphere due to the extensive use of fossil energy, which ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02H7/26
CPCY02E10/563Y02E10/56
Inventor 顾黎强
Owner STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
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