电力系统保护与控制2025，Vol.53Issue(9)：38-48,11.DOI:10.19783/j.cnki.pspc.240992
光伏接入下高压直流输电系统后续换相失败抑制策略研究
Study on suppression strategy for subsequent commutation failure in HVDC transmission systems with photovoltaic integration
摘要
Abstract
It has become a trend that large scale renewable energy power generation systems are connected to the receiving end grid of HVDC transmission systems.However,there is limited research on suppressing subsequent commutation failure in HVDC systems under such scenarios.First,in view of the scenario of PV connecting to the receiving end of LCC AC grid,the relevant mechanisms of subsequent commutation failure induced by PV after an AC fault are analyzed.It is found that after the initial commutation failure recovery,LCC experiences oscillations in the firing angle command due to PV output fluctuations.To address this,a subsequent commutation failure suppression strategy based on the suppression of inverter control command oscillations is proposed.By introducing additional current and extinction angle deviations into the constant current control and constant extinction angle control,the proposed method alleviates oscillations in the firing angle command.Finally,PSCAD/EMTDC simulations under different PV installation capacities,connection distances,and fault locations validate the effectiveness of the proposed suppression strategy.关键词
高压直流输电系统/后续换相失败/新能源/抑制策略Key words
HVDC/subsequent commutation failure/renewable energy/suppression strategy引用本文复制引用
赵静波,钟文梁,安海云,刘健,林圣..光伏接入下高压直流输电系统后续换相失败抑制策略研究[J].电力系统保护与控制,2025,53(9):38-48,11.基金项目
国家自然科学基金面上项目资助(52477127) （52477127）
江苏省自然科学基金项目资助(BK20221197)This work is supported by the General Program of National Natural Science Foundation of China(No.52477127). （BK20221197）
