A double objective coordination control method for voltage of distribution network considering the capability from distributed energy system

The intermittent distributed generation (DG) has strong volatility and randomness. The DGs are usually connected to the end of the weak distribution network, which causes a weak electrical connection between the source and network. The random power output of DGs usually leads to voltage fluctuations. In order to solve this problem, a double objective coordination control method for voltage of distribution network considering the capability from distributed energy system (DES) is proposed. Based on the operation characteristics of DES, the terminal voltage fluctuations of the upstream distribution system are solved by using the interactive capability from the DES. Simulation results show that, the proposed method not only can reduce the voltage fluctuations of distribution network, but also reduce the operation cost of DES.