考虑条件风险价值的电-气综合能源系统风险厌恶机组组合研究

To deal with the operational risks of integrated electricity and natural gas system brought about by uncertainty of new energy sources, this approach selects a reasonable unit commitment strategy to balance the operational risks and operating costs of the integrated energy system, and constructs a risk-averse integrated energy system unit commitment model. Conditional value-at-risk (CVaR) is introduced into the unit commitment of the integrated energy system to describe the load loss risk of the power system and the natural gas system. The operational risk of the power system and the natural gas system, and mutual influence between them are analyzed. The piecewise linearization technique is used to linearize the natural gas flow equation, and the model is decomposed into the main unit commitment problem, sub-problems for sub-scenario and natural gas load loss risk verification problems by the Benders decomposition algorithm. Compared with the traditional model, the proposed one can effectively reduce the power load loss in extreme scenarios with small probability and the load loss in the most severe scenario is lowered from 34.62 MW to 9.59 MW. The proposed model enables to coordinate the risk of power load loss and the risk of natural gas load loss, especially for the coordinated dispatch of the integrated systems.