逆变型电源接入对选相元件的影响分析

CHEN Shi

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逆变型电源接入对选相元件的影响分析

更新时间：2025-08-13

- 逆变型电源接入对选相元件的影响分析
- Automation of Electric Power Systems Vol. 41, Issue 12, Pages: 106-112(2017)
- 作者机构：
  
  上海交通大学电子信息与电气工程学院,上海市,200240
- 作者简介：
- 基金信息：
- DOI：
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- Published：2017
- 稿件说明：
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CHEN Shi. [J]. Automation of electric power systems, 2017, 41(12): 106-112.
DOI：

CHEN Shi. [J]. Automation of electric power systems, 2017, 41(12): 106-112. DOI：

摘要

大规模逆变型电源并网故障情况下采取正序分量控制策略

仅输出正序电流

导致逆变型电源侧正、负序电流分配系数严重不相等。从故障序阻抗特性出发

对含大规模逆变型电源送出线路基于传统相电流差突变量幅值关系和序电流故障分量间相位关系的选相元件动作特性进行分析。逆变型电源侧选相元件不能正确选相;系统侧选相元件动作性能受逆变型电源接入影响较少

基于PSCAD的仿真结果验证了理论分析的正确性。最后

对可能应用于含大规模逆变型电源接入的联络线选相元件判据进行了展望。

Abstract

The positive-sequence control strategy is adopted for the integration of large-scale use of inverter-interfaced generators(IIGs)under fault conditions

and the fault current supplied by IIGs only consists of positive-sequence components. Such being the case

the positive-and negative-sequence current distribution coefficients on the IIG side are no longer equal any more. Based on this fault characteristic

the performance of the two traditional phase selectors for transmission lines emanating from IIGs

e. g.

the phase selector of the sudden-change of two-phase current difference and the phase selector of the phase comparison of symmetrical components

are analyzed. The phase selectors on the IIG side fail to operate

whereas those on the system side can still make correct decisions. Simulation results based on PSCAD validate the effectiveness of the analysis. Finally

prospective phase selector criterion for systems containing IIGs is proposed. This work is supported by China Ministry of Education of Science and Technology Research Projects(No. 113023A)and State Grid Corporation of China(No. SGTJDK00DWJS1500098).

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