期刊论文

High Voltage Distribution Network Reliability Evaluation Based on State Space Truncation and Isolation Scope Derivation

Zan, Guilong(zan_gl@163.com)

中文

电力系统自动化

Automation of Electric Power Systems

1000-1026

2017

41

13

79-85

10.7500/AEPS20160913011

本校为其他机构

针对高压配电网特点,分别从故障阶数、网络结构和停电时间三个方面研究了状态空间截断。分析了多重故障对高压配电网可靠性的影响,指出对于高压配电网可靠性评估应考虑到的合理故障阶数为二阶;提出了一种快速确定二阶故障有效支路组合的网络拓扑搜索方法,并对每组有效支路组合建立了一种元件组合树以确定有效元件组合;若某二阶故障有效状态停电时间占比小于阈值,可直接忽略。对二阶故障有效状态提出了利用一阶故障隔离范围进行推导以快速获得二阶故障隔离范围的方法。所提方法对状态空间进行了有效截断,同时避免了确定隔离范围时重复拓扑搜索。

Existing reliability evaluation methods are mainly concerned with the medium voltage distribution network and transmission network but unsuitable for the high voltage distribution network since in general only its first-order fault is considered. For the medium voltage distribution network, multi-faults involving long execution time for the transmission network have to be taken into account. The state space truncation is studied from three aspects: the fault order, the network topology structure and the outage time ratio. Firstly, based on the reliability impact analysis of multi-faults from a...