摘要
保护通道的可靠性是线路继电保护装置正确动作的必要条件。同塔双回线路继电保护通道的结构复杂,元件共享程度高,可靠性分析方法复杂。根据同塔双回线路继电保护通道的构成原理,建立了基于故障树的可靠性模型;结合工程实际,确定了保护通道的元件可靠性参数,并对通道可靠性进行了分析计算;利用7种不同的测度,评估了各类元件的可靠性重要度。结果表明,光缆是影响保护通道可靠性最为重要的元件。研究结果对通道优化和通信设备维护策略优化具有参考价值。
The reliability of protection channel is a necessary condition for the correct operation of the relay protection equipment. Double-circuit lines on the same tower relay protection channel has a complex structure and highly sharing components, so the method of reliability analysis is complicated. According to the composing principle of double-circuit lines on the same tower relay protection channel, the paper establishes its reliability model based on fault tree. It combined with practical engineering and determines the component reliability parameters of the protection channel, then analyses and calculates the channel reliability. At last the paper evaluates the reliability importance of each component based on seven different measurements. The results suggest that the fiber optic cable is the critical component for the reliability of protection channel. The results also provide reference value for channel optimization and communication equipment maintenance strategy optimization.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2014年第3期25-31,共7页
Journal of North China Electric Power University：Natural Science Edition
基金
河北省高等学校科学技术研究指导项目"智能电网骨干通信系统安全风险评估"(Z2010291)
关键词
继电保护通道可靠性
同塔双回线路
故障树分析
可靠性计算
可靠性重要度评估
reliability of relay protection channel
double-circuit lines on the same tower
fault tree analysis
reliability calculation
evaluation for reliability importance
