电器与能效管理技术 ›› 2021, Vol. 0 ›› Issue (1): 64-69.doi: 10.16628/j.cnki.2095-8188.2021.01.011

• 检测与试验 • 上一篇    下一篇

基于薄弱电网下220 kV人工接地短路试验分析

段玉1, 焦春雷1, 张锋2   

  1. 1.国网新疆电力有限公司 新疆电力科学研究院, 新疆 乌鲁木齐 830000
    2.国网新疆电力有限公司, 新疆 乌鲁木齐 830000
  • 收稿日期:2020-09-28 出版日期:2021-01-30 发布日期:2021-02-05
  • 作者简介:段 玉(1993—),女,工程师,主要从事新能源建模相关研究。|焦春雷(1983—),男,高级工程师,主要从事网源协调研究。|张 锋(1978—),男,教授级高级工程师,主要从事电力系统仿真分析工作。

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

DUAN Yu1, JIAO Chunlei1, ZHANG Feng2   

  1. 1. State Grid Xinjiang Electric Power Co.,Ltd.Xinjiang Electric Power Research Institute,Urumqi 830000,China
    2. State Grid Xinjiang Electric Power Co.,Ltd., Urumqi 830000, China
  • Received:2020-09-28 Online:2021-01-30 Published:2021-02-05

摘要:

以网架结构较为薄弱的地区为研究对象,进行人工接地短路试验,旨在验证无功补偿装置(SVG)在电网发生大扰动下的无功动态响应能力及对电网电压的支撑能力,同时考虑光伏电源作为新能源接入对短路电流的影响,校核现行电力系统计算模型与电网实际情况的贴近程度。试验结果表明:SVG可为电网提供无功电压支撑,光伏作为新能源在电网发生短路故障期间具有助增短路电流的作用。试验为研究适应于大规模光伏并网后的互联系统光伏电源模型和建模方法提供现场试验结果数据,对进一步提升电网受电能力、优化网架及负荷结构提供了技术基础。

关键词: 无功电压, 短路电流, 光伏模型, 无功补偿装置, 新能源

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

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