Advanced voltage control integrated in DMS

Abstract

The paper deals with distribution network (DN) voltage control from the network operation point of view. The basic voltage control devices, under load and no load tap-changing transformers, are specially stressed. Distributed generators (DGs) and capacitor banks are also discussed. The classical principle of single line voltage drop compensation (LDC) is treated as the base voltage control. The optimal voltage control (OVC), which appeared 15 years ago, was developed to overcome some of LDC shortcomings. After the appearance of OVC, distribution management systems (DMSs) developed intensively and were applied immensely in distribution practice. This opportunity has been taken to integrate the distribution voltage control into DMS. The integration of the voltage control with Power flow, State estimation, Medium- and Short-term load forecast is of special interest for the paper. The high quality integration is provided by application of the same DN Data base and Mathematical model. In this way, the advanced voltage control has been developed. It ultimately overcomes all shortcomings of OVC (and LDC as well). This control is the subject of the paper and its properties are compared with LDC and OVC. © 2012 Elsevier Ltd. All rights reserved.