A new control algorithm for energy storage integration with radial distribution feeder

The distribution feeders often get overloaded under peak power demands. This situation is generally countered by load shedding, which leads to financial losses to utilities and individual users. The compensation of real/reactive power not only provides the voltage profile improvement but also ensures the sustain power to the consumers. This paper presents the new control algorithm to support the real and reactive load power demand by integrating energy storage (ES). The efficiency functions co-relates to the thermal limit and storage energy availability. For a given radial feeder this control algorithm ensures the unity power factor on source side which provides relief in reactive power support from the source. The energy saving due to loss reduction and reliability of supply for critical load justify the additional energy storage investment. This algorithm is implemented with the energy storage system along with the DSTATCOM. The performance of the controller is observed using MATLAB/SIMULINK.