Fast Energy Loss Computation and Fuzzy-Based Shunt Capacitor Insertion

Fast energy loss computation is implemented using supervisory control and data acquisition system (SCADA) with personal computer. Logic Control Array (LCA) and EPROM circuits are used to implement SCADA system and to measure the VoltAmpere, KVolt and KVAR and draw the daily load curve for residential and commercial customers. LCA, EPROM and PC are used to simplify the electronic circuits, reduce the cost and speed up the computation time. An illustrative example was done to measure, store and show the active power, reactive power, load voltage, load current, power factor, and the shunt capacitors current. It is found that when 2.7 MVAR bank capacitor is inserted in the network the load current is decreased from 740.8A to 688.4A and the power factor is improved from 80% up to 93%, and led to add more loads on the network and release the feeder capacitor. A rule-based fuzzy decision maker has been designed and tested with the real data collected from Jordan using SCADA system. The calculated output is almost similar to that obtained from the first approach presented in this paper. The advantage of using fuzzy decision maker is its simplicity that can be implemented on a programmable logic device and can be programmed to improve the power factor.