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A grid-connected structure for distributed photovoltaic power plants and 380v power grid overhead lines

A distributed photovoltaic and overhead line technology, applied in emergency protection circuit devices, electrical components, single-network parallel feeding arrangements, etc. The effect of reducing the blackout range

Active Publication Date: 2016-05-11
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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  • A grid-connected structure for distributed photovoltaic power plants and 380v power grid overhead lines
  • A grid-connected structure for distributed photovoltaic power plants and 380v power grid overhead lines

Examples

Experimental program
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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 between a distributed photovoltaic power station and a 380V power grid overhead line, the photovoltaic power station and the 380V power grid overhead line are connected through a cable 3, including: a power station side protection device 1, an overhead line 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, and is used to form a 10kVT connection line; the overhead line circuit breaker 2 is set on the cable 3 connected to the 380V power grid On the line of the line, its input end is connected with the output end of the power station side protection device 1 .

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PUM

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Abstract

The invention discloses a distributed photovoltaic power station / 380V power grid overhead network grid-integration structure. The photovoltaic power station is connected with the 380V power grid overhead network through a cable. The structure comprises a power station side protector and an overhead network circuit breaker, wherein the power station side protector is arranged on the line of an output cable of the photovoltaic power station; and the overhead network circuit breaker is arranged on the line of the cable integrated into the 380V power grid overhead network. 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 in which power generation is integrated into a power grid, in particular to a grid-connected access structure for a distributed photovoltaic power station and a 380V power grid overhead line. The capacity of a single grid-connected point of the distributed photovoltaic power generation is 20kW to 300kW. 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 glo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02H7/26
CPCY02A30/60
Inventor 盛佳蓉
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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