Unit Commitment Strategy Based on Multi Energy Power System

In order to promote the absorption of wind and photovoltaic power generation, this paper proposes a two-stage constraint handling method for the multi-energy unit commitment problem. In the first stage, constraints such as minimum startup and shutdown times, unit output, and power balance are processed. In the second stage, handling equality constraints such as energy storage capacity and total shiftable load. The coupling of these two stages enables quick and effective seek the optimal startup and shutdown solution, minimizing the operating cost of the system. A case involving 10 thermal power units, wind farms, and a photovoltaic plant was used to test the performance of the proposed method. The results show that the proposed method can efficiently obtain a better unit commitment solution and improve the system economy.