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This paper introduces a PC cluster based supporting platform, called wide logic grid (WLGrid), for new generation of EMS. This platform has an open and loosely coupling plug-in architecture, which allows components developed individually to be easily plugged into the system. A component-based development (CBD) pattern is used to develop this platform, which can make software modules loosely coupled...
The energy management system (EMS) is the core of an electric power control center (EPCC) to manage and control the power system in a secure and economical way. Because the power system nowadays is large and interconnected (in the space dimension), the operational state is continuously varying (in the time dimension), and the control objectives are numerous (in the dimension of objectives), an EMS...
A new equivalent model based on phaser measurement unit (PMU) is proposed to analyze and predict the voltage stability of a transmission corridor. This equivalent model retains all transmission lines in a transmission corridor, which is more detailed and accurate than traditional Thevenin equivalent model widely used. To estimate parameters of the proposed model, Newton method or the least square...
Failure probability of system components may vary with the changes of weather, environment and other operation conditions. The time-varying or condition-based failure probability can be represented using a fuzzy model. Based on credibility theory, this paper presents a novel operation risk assessment method to handle the two-fold uncertainty combining randomness and fuzziness in power system operations...
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