New Bi-Level Voltage and Reactive Power Control in Harmonic Distribution Network

In this paper, new voltage and reactive power (volt/var) control in harmonic polluted distribution network is proposed to improving the power quality criteria. In the first level, mechanical controllers dispatch and early planning of reactive power are determined based on PV and load forecasts. Possible uncertainties of load and power forecasts and mechanical control setting have been used to estimate optimized reactive power of PV for achieving maximum voltage regulation, reducing network losses and total harmonic distortion. These data have been trained a neural network to estimate optimized PV reactive power. This neural network in second layer have been used to online reactive power setting based on online real PV power. For more practical application of the proposed method, simulation is carried out in the large distorted IEE 123- bus and 37 bus distribution system. The algorithm will increase use of renewable energies, reduce voltage fluctuations, THD, and wear and tear of mechanical equipment.