电网技术2024，Vol.48Issue(7)：3023-3032,中插98-中插100,13.DOI:10.13335/j.1000-3673.pst.2023.0931
交流故障下高压直流系统无功特性分析及无功控制策略研究
Research on Reactive Power Characteristics Analysis and Reactive Power Control Strategy of HVDC System Under AC Fault
摘要
Abstract
VDCOL(voltage dependent current order limitation)strongly coupled the active and reactive HVDC systems.The reactive power support capability of the converter station cannot be fully utilized to improve its recovery performance during the AC fault duration and recovery process.This paper uses the CIGRE HVDC standard test model and the Guiguang Ⅱ project model as examples.The operating range of DC and reactive power under the AC fault of the two models is analyzed and calculated.It is verified in the PSCAD/EMTDC simulation program.Then the external characteristics of VDCOL are analyzed.The results show that the DC command of VDCOL is not within the calculated operating range.Finally,a reactive power control strategy to replace VDCOL is adopted,which can not only ensure that the control instructions on both sides of the DC are within the operational range,but also improve the fault recovery performance of the HVDC system.关键词
高压直流/无功功率/换相失败/交流故障Key words
HVDC/reactive power/commutation failure/AC fault分类
信息技术与安全科学引用本文复制引用
何启皓,汪娟娟,关晓羽,李欢,吴为,廖名洋,傅闯..交流故障下高压直流系统无功特性分析及无功控制策略研究[J].电网技术,2024,48(7):3023-3032,中插98-中插100,13.基金项目
国家自然科学基金项目(52277102).Project Supported by National Natural Science Foundation of China(NSFC)(52277102). （52277102）
