Online determination of voltage stability weak areas for situational awareness improvement

摘要: Abstract A fast and accurate determination of voltage stability weak areas allows the power system operator to execute preventive actions, aimed maintain an adequate operation under changing conditions. However, due large number possible operating conditions, becomes a challenging task. This paper is oriented discuss approach for online identification these in system, where exist high risk experience problems. The proposal, which part situational awareness tool, initially defines next determines actual area, using measurements obtained from system. According tests performed two systems (IEEE 14 30 nodes), proposed alternative has performance rates on areas. errors are lower than 1% more 111,000 different conditions analysed systems. strategy, validate its use as tool.