摘要
现有的故障诊断解析模型没有充分利用警报信息的时序特性,诊断结果不够明确。对电网故障诊断优化模型中的故障假说进行扩展,用故障发生时间t代表元件的状态,故障发展过程中保护、断路器的状态均为故障发生时间t的函数,其状态值随着时间的发展而变化。此模型能够合理地描述现代电力系统多种保护配置下元件、保护、断路器连续的状态变化及保护和断路器的动作时序关系。最后用电力系统的故障实例对所提出的方法进行了说明。
The temporal information of alarm messages is not well employed in currently used analytic models for power system fault diagnosis,as a result,the diagnosis results may be indefinite especially for complicated and multiple faults.In this paper,the fault hypothesis in the optimization models for power network fault diagnosis is extended.The failure time t is used to stand for the state of the element,and the state of the protection and breakers is the function of the failure time t.The change of the state of elements,protection relays and circuit breakers with time,the sequential relationship of the actions of protection relays and circuit breakers in modem power systems with multiple kinds of protection configurations can be rationally represented by the model developed.Fault events that occurred in an actual power system are used for demonstrating the proposed model.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2014年第1期62-66,共5页
Proceedings of the CSU-EPSA
关键词
电力系统
故障诊断
优化模型
警报
时序
power system
fault diagnosis
optimization model
alarm message
sequence
