摘要
针对复杂电网故障诊断的模糊Petri网模型不能适应网络拓扑变化且未考虑保护和断路器信息对故障影响程度等问题,提出了基于方向性加权模糊Petri网的电网故障诊断方法。首先通过电力网络拓扑分析确定停电区域;其次,分别在每个故障蔓延方向上对停电区域内的元件建模进行推理计算;最后分析该算法在网络拓扑变化时的通用性以及信息不完备情况下的容错性。对14节点电力系统的仿真结果表明:该算法可以有效地降低输入输出矩阵的维数,减小计算量,能够自动适应网络拓扑结构的变化,在信息不完备的情况下给出正确的诊断结果,具有较好的通用性和容错性。
Owing to the fuzzy Petri net (FPN) for the complex power system fault diagnosis is unable to adapt to topology changes and it doesn't take the impact degree of protection and circuit breaker information on power system fault into consideration, a power system fault diagnosis method based on directional weighted fuzzy Petri nets (WFPN) is proposed. Firstly, this method can confirm interrupted districts by power network topology analysis. Secondly, the elements in interrupted districts are modeled on every fault spread direction. Finally, the universality in the condition of topology changes and the fault tolerance of the algorithm with incomplete information are analyzed. Simulation results on 14 buses power system indicate that the proposed method can decrease the dimension of inputs-outputs matrix efficiently and reduce calculation amount. And the method can adapt to topology changes automatically and obtain satisfying diagnosis results with incomplete information. It has good universality and fault tolerance ability.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第34期42-49,共8页
Proceedings of the CSEE
基金
国家自然科学基金项目(50877068)
四川省杰出青年基金项目(06ZQ026-012)
教育部优秀新世纪人才支持计划项目(NCET-06-0799)~~
作者简介
杨健维(1983),女,博士研究生,主要研究方向为电力系统故障诊断,yangjianwei0910@163.com
何正友(1970),男,博士,教授,博士生导师,主要从事现代信号处理和信息理论在电力系统故障分析中的应用、新型继电保护原理、配网自动化等方面的研究工作;
臧天磊(1986),男,硕士研究生,主要研究方向为电力系统运行优化,智能优化算法在电力系统中的应用。