Selection of the connection node and power of battery energy storage system in distribution electric network

Abstract

Due to the global increase in the share of renewable energy sources in the share of generation in distribution electric networks around the world, an acute problem of power fluctuations has arisen. Battery energy storage systems make it possible to smooth out peak loads, compensate for the instability of renewable energy generation, provide backup power and optimize network operation, including in the context of reducing total active power losses in the network. However, their implementation is associated with a number of technical, economic and regulatory challenges that require an integrated approach to integration and management. The purpose of this article is to select a connection node and capacity of a battery storage system in a distribution electric network in terms of minimization of total daily active energy losses in the network. An algorithm is presented that allows selecting a connection node for the storage system in terms of minimization of total daily active energy losses. Using a test circuit of a distribution electric network as an example, a modeling of the connection of a battery energy storage system was carried out, the values of active power losses and the capacities of the battery system were obtained.