摘要
基于故障扩散法,提出中压配电网可靠性评估的迭代算法。故障扩散算法中存在大量冗余搜索,降低了计算速度,进行以下改进:提出开关分层概念,在故障枚举前预先形成关于断路器和隔离开关的开关分层,当前开关所关联的后向负荷等信息可由其下层开关的相关信息参与形成,从而节省后向搜索时间;通过判断故障处及其前向线路的开关安装情况,形成不同的故障模式,并给出不同故障模式下负荷分类的迭代方法,不仅避免了前向搜索开关,而且能充分利用已知的故障后果信息和开关分层信息,提高计算速度。将所提算法应用于RBTS-Bus6、RBTS-Bus2试验系统和实际工程系统的可靠性评估及以可靠性评估为基础的开关优化计算中,证明了其正确高效。
Based on the fault-spreading algorithm, the iteration algorithm of reliability evaluation for medium-vohage distribution networks was presented. There exists much redundant search in the fault-spreading algorithm, which lowers the calculation speed. In terms of this, some improved measures were taken. The switch-layer concept was presented, which was established before fault enumeration. The backward information of loads of the present switch can be partially got from the switches in the backward layer, which spare much time for backward search. According to the switch-fixing information of the fault point and its forward point, various fault modes and loads-classification methods based on them were presented, which can avoid forward search and use the information of the known fault sequences and that in the switch- layer. Applied to reliability evaluation and optimal switching devices based on reliability evaluation of test system RBTS-Bus6, RBTS-Bus2 and a practical system, the algorithm was proved to be correct and high-effective.
出处
《中国电力》
CSCD
北大核心
2010年第3期19-22,共4页
Electric Power
关键词
配电网
可靠性评估
故障扩散
开关分层
故障模式
迭代
distribution networks
reliability evaluation
fault-spreading
switch-layer
fault modes
iteration
