Optimised Wind Farm Active and Reactive Power Dispatch While Considering Fatigue Distribution

Abstract

In the traditional optimization of wind farms (WFs) power dispatch, the strategies of active and reactive dispatches are decoupled. However, the electrical power losses inside a WF is related to both the active power dispatch and reactive power dispatch. This paper unites active and reactive power dispatches to make the output power of WF maximal. In addition, the uneven fatigue distribution of WF caused by wake effect and the improper active power dispatch will lead to high maintenance frequency, which means high maintenance costs. Therefore, this paper also takes the fatigue distribution of WF into account. The fatigue coefficient is selected to represent the fatigue suffered by wind turbines (WTs). And the standard deviation is take to evaluate fatigue distribution. Simulations are made in a WF consisting of 50 PMSG WTs. The PSO algorithm is implemented to solve problems. The active and reactive power of each WT are the control variables. The case study section shows the new strategy’s superiority.