Power Coordinated Control of PMSG-WTG Based on Power Flow Calculation in Distribution Network

Considering the uncertainty about the power flow in the distribution network, a power coordinated control strategy for permanent magnet synchronous generator-wind turbine generation (PMSG-WTG) is proposed. The strategy is based on the real-time power flow analysis of the distribution network to coordinately control the output of PMSG-WTG, and then achieve to optimize the power flow in the distribution. First, the real-time power flow calculation is carried out to obtain the distribution of power flow in the distribution network. According to the current power flow state, the system will reasonably dispatch PMSG-WTG to accomplish the power coordinated response. Secondly, the optimal power flow (OPF) calculation is carried out to obtain the optimal power allocation for the PMSG-WTG, and the optimal power flow of the distribution network is efficiently solved based on Dung Beetle Optimization (DBO) algorithm. Then PMSG-WTG will accurately track the optimal allocated power by using repetitive control, and the optimal power output of the system is achieved. The experiment results show that the dynamic power coordination between PMSG-WTG and the distribution network is realized through the strategy. The power losses of the distribution network are effectively reduced, and the bus voltages are stabilized.