Development of Power System Voltage Stability Region (PSVSR) for Static Voltage Security Assessment

Development for a static voltage security assessment software package entitled power system voltage stability region (PSVSR) is presented in this paper. A novel power system stability analysis method named "security region" is utilized to develop this comprehensive software package. PSVSR has been implemented in standard C++ on Windows environment. It is constructed with three layers: user interface layer, kernel computation program layer and background support layer. Such structure makes PSVSR more robust, stable and expandable. PSVSR adequately utilizes advantages of the "security region" method and will give electric engineers global and symmetric information about system voltage stability and thermal limits in cut-set complex power space. The performance of the developed program has been tested with EPRI 1000-bus test system.