In this paper, the peaking capability of the thermal power unit is maximized, and the wind power accommodation as much as possible. A mathematical model of in depth peak load cycling of the thermal power unit under the condition of wind power integration is proposed, and optimal operation of thermal power unit in depth peak load cycling. Based on the actual data of a provincial power grid in China, the economics of the thermal power unit in depth peak load cycling scheme under large-scale wind power integration are analyzed. The research results show that the adoption of thermal power unit in depth peak load cycling scheme can not only stabilize wind power fluctuation, solve the problem of wind power accommodation, but also save the generation cost of thermal power unit, making it feasible to ”depth peak load cycling and wind power accommodation”.
Keywords Peaking capability, Depth peak load cycling, Wind power accommodation