2015年特高压规划电网华北和华东地区多馈入直流输电系统的换相失败分析Analysis on Commutation Failures in Multi-Infeed HVDC Transmission Systems in North China and East China Power Grids Planned for UHV Power Grids in 2015
邵瑶;汤涌;郭小江;周勤勇;
摘要(Abstract):
基于2015年"三华"特高压规划电网的丰大运行方式,采用机电暂态仿真软件PSD-BPA,对华北、华东地区多馈入直流输电系统换相失败问题进行深入研究。研究结果表明,华北、华东地区任一直流发生单/双极闭锁故障时,均不会引起其他直流发生换相失败;华北地区大部分直流逆变站换流母线附近三永故障,不会导致其他直流换相失败;华东地区重要交流通道和逆变站换流母线附近三永故障会导致多回直流同时发生换相失败,但这些换相失败持续时间较短,直流系统能快速恢复正常运行,系统能在不采取任何措施下保持稳定;采用静止无功补偿器进行无功补偿,可有效抑制华东地区直流输电系统换相失败的发生。
关键词(KeyWords): “三华”电网;多馈入直流输电系统;换相失败;无功补偿;静止无功补偿器
基金项目(Foundation): 国家电网公司科技项目(XT71-10-024)~~
作者(Author): 邵瑶;汤涌;郭小江;周勤勇;
Email:
DOI: 10.13335/j.1000-3673.pst.2011.10.023
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