Grid-connected access structure of distributed photovoltaic power station and 10-kV power grid overhead line

Abstract

The invention discloses a grid-connected access structure of a distributed photovoltaic power station and a 10-kV power grid overhead line. The photovoltaic power station is connected with the 10-kV power grid overhead line through a cable, and comprises a power-station-side protective device and an overhead line protective device, wherein the power-station-side protective device is arranged on the line of the output cable of the photovoltaic power station; the overhead line protective device is arranged on the line of the cable which is connected to the 10-kV power grid overhead line. 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 integrated into a power grid, in particular to a grid-connected access structure for a distributed photovoltaic power station and an overhead line of a 10kV power grid. The capacity of a single grid-connected point of the distributed photovoltaic power generation is 300kW-1MW. 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 wa...

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

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