Analysis on the Influence of Operation Mode of Thermal Power Units to the Accommodation of Wind Power

With the increase of wind power capacity in China, the situation of curtailment of wind power is getting worse. In order to alleviate the problem, this paper analyzes the causes of curtailment of wind power. Peak-load regulation capacity constraints and transmission restriction of power grid are the main cause for wind power curtailment. The section of curtailment caused by transmission re-striction can be transformed into the section caused by peak-load regulation ca-pacity constraints. It proposes that solutions to improve power grid peak-load regulation capacity are the key to resolve the problem of curtailment. An annual sequence production simulation model is established with maximum wind power consumption as the objective function and a provincial power grid is taken as an example to analyze the impact of thermal power boot mode, power unit peak-load regulation capacity and spinning reserve of power grid to the accom-modation of wind power. The calculation results quantify the impact of different factors from power system to the accommodation of wind power and provide reference to solve the problem of wind power curtailment.