Analysis on 220 kV Artificial Grounding Short Circuit Test Based on Weak Power Grid

doi:10.16628/j.cnki.2095-8188.2021.01.011

Abstract

Abstract:

The area with weak grid structure is used as the research object,and the artificial grounding short circuit test is performed to verify the reactive dynamic response capability of reactive power compensation device (SVG) under large disturbances in the power grid and the support ability to the voltage of weak grid.At the same time,it analyzes the impact of photovoltaic power supply as new energy on short-circuit current,check the closeness of the current power system calculation model to the actual situation of the power grid.The test results show that SVG can provide reactive voltage support for the grid,photovoltaic as a new energy source helps increase short-circuit current during short-circuit faults in the grid.This test provides field test result data for the research of photovoltaic power supply models and modeling methods suitable for large-scale photovoltaic grid-connected interconnected systems,provides a solid technical foundation for further improving the power receiving capacity of the power grid and optimizing the grid frame and load structure.

Key words: reactive voltage, short-circuit current, photovoltaic model, SVG, new energy

CLC Number:

TM773

DUAN Yu, JIAO Chunlei, ZHANG Feng. Analysis on 220 kV Artificial Grounding Short Circuit Test Based on Weak Power Grid[J]. LOW VOLTAGE APPARATUS, 2021, 0(1): 64-69.

Figures/Tables 13

References 15

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