【摘要】 在分析交直流网络系统可靠性评估计算条件的基础上 ,考虑到网络的实际运行情况 ,提出一种将可靠性研究的两种经典方法 (即模拟法和解析法 )结合使用的新方法——Monte Carlo- FD混合法 ,并对其可靠性等效模型作了深入研究。详细讨论了整个交直流网络系统的模拟方法 ,具体分析了计划检修的模拟和一阶、二阶故障的判别方法 ,并区分了故障后潮流调整与否两种实际情况 ,阐述了网络系统可靠性状态分析的方法 ,并在系统随机模拟中引入了对指标精度的控制。应用该方法对某一实际 5 0 0 k V交直流网络系统进行了可靠性评估 ,在提高模拟速度和精度上均取得了很大突破更多还原

【Abstract】 A new method named Monte Carlo FD Comprehensive Method in which the two classical methods (simulation & analysis) can be combined for reliability evaluation is presented in this paper. Based on the actual operation condition of AC/DC hybrid network systems, the reliability equivalent model is investigated in detail. The stochastic simulation method for the whole AC/DC hybrid network systems is discussed. The scheduled maintenance and criterion for N 1 and N 2 faults are analyzed. Two actual situations are distinguished according to whether power flow is regulated or not. Then the state analysis approach of the system is described. Besides, precision control for simulation is introduced. Reliability evaluation of a 500kV hybrid network system shows that the method proposed in this paper is of great success in improving simulation speed and precision.更多还原