Economic Criteria for the Compensation of Reactive Power of Loads in Transmission and Distribution Networks PDF

Keywords

power stations, transmissions, networks

Abstract

The mathematical analysis for determining the optimum and economic compensation of the reactive power of loads in distribution networks is presented for both single and multi-feeder systems. This entails study of the optimum distribution of 1lkV-rating capacitors in the network and is repeated for the case when the total installed capacity of capacitors is unknown. The economic criteria for the use of 0.4 kV capacitors is also considered and their need checked by a deduced formula. An algorithm for obtaining the economic distribution of capacitors is determined in order to compensate the reactive powers in transmission systems. It is based on both a hierarchy principle and partition technique with the equivalent circuit at different hierarchy levels. The parameters of the equivalent circuit depend on the economic characteristics of reactive power compensation. For simplicity, these characteristics may be approximated in the form of a second-order polynomial.