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Distributed photovoltaic power station/380V user distributor box grid-integration structure

A distributed photovoltaic and photovoltaic power station technology, applied in the direction of photovoltaic power generation, electrical components, single-net parallel feeding arrangement, etc., can solve problems such as low reliability, low efficiency of fault reporting, and difficulty in effectively removing faults, etc., to reduce The effect of blackout range

Active 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/380V user distributor box grid-integration structure
  • Distributed photovoltaic power station/380V user distributor box grid-integration structure

Examples

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Embodiment Construction

[0019] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, a grid-connected connection structure of a distributed photovoltaic power station and a 380V user distribution box, the photovoltaic power station and the 380V user distribution box are connected through a cable 2, including: a power station side protection device 1, which is arranged on the photovoltaic power station On the line of cable 2 output from the power station.

[0021] Such as figure 2 As shown, the power station side protection device 1 includes: a current sensor 11, a current transformer 12, an overcurrent protector 13, a relay 14, and a circuit breaker 15, wherein the current sensor 11 is arranged on the cable 3; the current transformer 12 communicates with the The output end of current sensor 11 is connected, and in the present embodiment, relay protection shoul...

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Abstract

The invention discloses a distributed photovoltaic power station / 380V user distributor box grid-integration structure. The photovoltaic power station is connected with a power distribution station 380V bus through a cable. The structure comprises a power station side protector, wherein the power station side protector is arranged on the line of an output cable of the photovoltaic power station. 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 user distribution box. 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 global warming and in...

Claims

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Application Information

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