Performance Evaluation of a BESS Unit for Black Start and Seamless Islanding Operation

The main purpose of this paper is to evaluate the overall performance a battery energy storage system (BESS) during (I) grid-connected, (II) black start, and (III) islanded operating modes. To do so, firstly, novel three-mode controller proposed developed. proportional–integral–derivative (PID) implemented, including following three components: (1) inertia emulation, (2) frequency-active power voltage-reactive droops, (3) secondary frequency voltage controllers. Secondly, effectively under various grid conditions both start seamless transition operation, set comprehensive dynamic simulations using Matlab/Simulink carried out. end, sensitivity analyses on numerous parameters, such as pre-disturbance power, total installed BESS capacity, state charge, unbalanced three-phase load flows, implemented power-frequency distribution network types with shares static loads, are performed. Thirdly, practically improve enabling demand response participation, fast-controlled thermostatic scheme implemented. Simulation results show that unit has great potential successfully control within allowable limits islanding modes over wide range conditions.