中文摘要：

通过对TCSC结构和故障模式分析，构建了TCSC及其子模块的可靠性框图．计及部件冗余配置讨论了子模块可靠性；深入分析了TCSC的电抗随电流而变化的运行特性．基于此提出了一种计及TCSC视在电抗约束的线路可靠性模型；根据实时运行条件下故障率参数的时变特性．应用马尔可夫理论推导了TCSC核心部件以及整个线路的状态概率计算公式，并基于运行风险理论建立了条件相关的故障率模型．该模型定量考虑了负荷随机波动、元件老化以及气温变化对元件可靠性的影响。通过对RBTS测试系统可靠性的计算分析验证了所提模型告白有效性和正确性。

英文摘要：

The structure and fault mode of TCSC （Thyristor the reliability block diagram is constructed for TCSC and its Controlled Series Capacitor） are analyzed, submodules,and the reliability of submodule with redundant component configuration is discussed. The operational characteristics of TCSC reactance varying with current is analyzed,based on which,a line reliability model with the TCSC apparent reactance constraint is proposed. According to the time-varying characteristics of failure rate in real-time operating condition,the state probability calculation formulas are deduced based on Markov theory for the core components of TCSC and the entire lines. A conditional failure rate model is built based on the operating risk theory,which quantitatively considers the impact of random load fluctuation,component aging and temperature variation on the reliability of components. The reliability of RBTS test system is calculated and analyzed, verifying the effectiveness and correctness of the proposed model.