Research the Impact of Battery Energy Storage Systems on the Transmitting Capacity Electric Power Distribution Networks

Abstract

The increasing peaks of load profile and increasing penetration of distributed generation (DG) based on renewable energy sources (RES) determine the critical importance of developing the use of battery energy storage systems (BESS) in order to eliminate the necessity of modernization of power grid facilities and increase the transmission capacity of electric power distribution network with a voltage 6-20 kV (DN). However, there are currently no factors to evaluate the effectiveness of the BESS using to increase the transmission capacity of the DN. Defining these factors is the purpose of this article. In solving the problems used, the method of regression analysis of the theory of experimental design. In the process of performing the practical part, the research method was mathematical modeling. To increase the available power of technological connection and reduce voltage deviations on the 0,4 kV buses of transformer substations 6-20 / 0,4 kV (TS) in the area adjacent to the DG based on RES of DN, the independent factorial signs and the boundaries of their changes were determined, and linear multiple regression mathematical models are developed. The most significant factors for increasing the transmission capacity of the DN according to the specified criteria are determined. The influence of the loading of the TS transformer and the complex effect of the power flow and voltage levels in the network must be taken into account as the main factors in determining the best possible option for the parameters of the BESS and their locations, used to increase the transmission capacity of the DN.