华东电网统计型潮流评价指标的分析与应用

Study on Statistical Power Flow Index and its Application in East China Grid

潮流监视与控制作为电网调度运行部门的重要工作,是保证电网安全稳定的重要举措。针对传统"单维度"、"限额型"潮流监控指标的不足,在充分挖掘电网历史数据潜在价值的基础上,提出了基于统计分析的潮流评价指标PFI,根据PFI指标绘制潮流分布曲线,为电网输电断面潮流分析、潮流预控及中长期电网统计分析提供辅助手段,实现电网潮流监控指标向"多维度"、"统计型"指标的转变。PFI指标为电网调度运行人员及时发现电网潜在威胁,保障电网安全、经济、优质运行,提供了技术支撑,是华东电网建设多指标自趋优智能电网的重要组成,已成为安全校核、潮流实时监控之外的又一种重要的潮流分析手段。

Power grid control center safeguards the bulk power system by monitoring active power flow and managing network congestions.By far,EMS only provides two-dimensional visualized power flow chart, which focus on the power flow limits and real-time monitoring.This paper suggests a multi-dimensional statis-tical Power Flow Index （PFI）which is able to analyze,forecast and evaluate grid reliability based on the oper-ating parameters data mining.PFI helps to discover the potential congestion and enhances the efficiency of power transmission by plotting power flow distribution curve.It adapts to long-term statistical analysis of dif-ferent facilities by employing the adjustable time window and multi-level facility load factor.PFI is one of the essential tools of self-optimal East China Power Grid.