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Distributed photovoltaic power station/power distribution station 380V bus grid-integration structure

A distributed photovoltaic and photovoltaic power station technology, applied in photovoltaic power generation, electrical components, single-grid parallel feeding arrangements, etc., can solve the problems of low reliability, large-scale power outages, low efficiency of fault reporting, and reduce power outages. range effect

Inactive Publication Date: 2014-02-26
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Distributed photovoltaic power station/power distribution station 380V bus grid-integration structure
  • Distributed photovoltaic power station/power distribution station 380V bus grid-integration structure

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Embodiment Construction

[0020] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a grid-connected connection structure of a distributed photovoltaic power station and a 380V busbar of a distribution station, the photovoltaic power station and a 380V busbar of a distribution station are connected through a cable 3, including: a power station side protection device 1, a system side circuit breaker 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 circuit breaker 2 is set on the line where the cable 3 connects to the 10kV power grid overhead line.

[0022] Such as figure 2 As shown, the power station side protection device 1 includes: a current sensor 11, a current transformer ...

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Abstract

The invention discloses a distributed photovoltaic power station / power distribution station 380V bus grid-integration structure. The photovoltaic power station is connected with the power distribution station 380V bus through a cable. The structure comprises a power station side protector and a system side circuit breaker, wherein the power station side protector is arranged on the line of an output cable of the photovoltaic power station; and the system side circuit breaker is arranged on the line of the cable integrated into the power distribution station 380V bus. The structure can ensure the power supply reliability after grid integration, reduce the power cut range and effectively implement failure removal.

Description

technical field [0001] The invention relates to a grid-connected structure for power generation integrated into a power grid, in particular to a grid-connected access structure for a distributed photovoltaic power station and a 380V busbar of a power distribution station. The capacity of a single grid-connected point of the distributed photovoltaic power generation is ≤100kW. 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 has caused glob...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02H7/26
CPCY02E10/563Y02A30/60Y02E10/56
Inventor 潘华明
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO