电力系统自动化2026，Vol.50Issue(10)：110-121,12.DOI:10.7500/AEPS20250704002
基于有功无功安全约束的后续换相失败裕度预估及抑制方法
Margin Prediction and Suppression Method for Subsequent Commutation Failure Based on Active and Reactive Power Security Constraints
摘要
Abstract
Improper control in high-voltage direct current(HVDC)system induces subsequent commutation failure(SCF),leading to repeated severe power fluctuations.Under various operating conditions,the AC reactive power varies significantly.From the power perspective,the commutation security constraint law can be characterized jointly by DC transmitted active power and AC reactive power,providing a new insight for control optimization.The correlation between commutation security constraints characterized by extinction angle and DC active and AC reactive power is sorted out.It reveals that the increase in active power is conditional on the reduction of reactive power or the extinction angle,and the extinction angle security can be jointly characterized based on active and reactive power.Accordingly,a margin prediction and suppression method for SCF based on active and reactive power security constraints is proposed.The effect of control on power is quantified,and the active and reactive power during fault operation can be predicted.Considering the impact of the commutation process on power,the temporal characteristics of the valve-side current are used to detect the commutation angle,increasing the prediction accuracy.A critical extinction angle satisfying the predicted power level is derived,and the deviation between this angle and the extinction angle order is used to construct an SCF margin index and a compensation order,thereby suppressing SCF.Simulation verifies that the proposed method exhibits excellent performance under various operating conditions across multiple control systems.关键词
高压直流系统/功率安全约束/换相失败/功率预测/裕度预估/关断角补偿Key words
high-voltage direct current system(HVDC)/power security constraint/commutation failure/power prediction/margin prediction/extinction angle compensation引用本文复制引用
李晓华,李昊,汪旭辉,李欢,殷珊珊,罗一杰..基于有功无功安全约束的后续换相失败裕度预估及抑制方法[J].电力系统自动化,2026,50(10):110-121,12.基金项目
国家自然科学基金资助项目(52477098) （52477098）
广东省自然科学基金资助项目(2025A1515010058). This work is supported by National Natural Science Foundation of China(No.52477098)and Guangdong Provincial Natural Science Foundation of China(No.2025A1515010058). （2025A1515010058）
