基于模糊层次分析法的煤矿电网电压态势预警研究

煤矿供电系统电压水平直接影响到电动机的启动及正常运行,但目前电网监控系统不能利用监测的实时电网结构参数和实时潮流分布数据对电网运行状态及电压水平进行预警研究,从而不能消除电网运行中的安全隐患。文章利用电网监控系统实时潮流分布数据,结合层次分析法和模糊理论,通过选取电压态势预警评判指标构建了模糊综合评判矩阵,评估当前电网电压水平,分析电压发展趋势,实现了煤矿电网电压运行态势预警,完善和提高了电力监控系统的监控功能。

Research of Voltage State and Tendency Forewarning in Coal Mine Power Network Based on Fuzzy Theory and Analysis Hierarchy Process

Voltage levels of coal mine power supply system have direct effects on motors′ start-up and normal operation, but now monitoring and control system of coal mine power supply cannot give fore-warning research of running status of coal mine power network and voltage levels using real-time parameters of power network structure and real-time power flow parameters, so it cannot eliminate potential safety problems in power network. Using real-time power flow parameters of monitoring and control system in power network, and combining with analysis hierarchy process (AHP) and fuzzy theory, the paper constructed fuzzy comprehensive evaluation matrix through selecting forewarning evaluation indexes of voltage state and tendency, evaluated current voltage level, analyzed voltage tendency, so as to achieve voltage state and tendency forewarning of coal mine power network, improve and enhance monitoring and control capabilities of coal mine power monitoring and control system.