Multi-energy combined peak dispatching system synthetic benefit evaluation based on variable weight theory and matter-element extension model

Abstract

Purpose To improve power system peak dispatching ability, connecting energy-storage device such as electric vehicle (EV) and regenerative electric heater (REH) to power grid is a good choice. Design/methodology/approach This paper establishes a multi-energy combined peak dispatching system MCPDS which includes EV, REH and wind power. The matter-element extension model based on improved variable weight theory is applied to evaluate MCPDS synthetic benefit. Findings The research shows that the MCPDS established in this paper performs excellently in security benefit, economic benefit, social benefit and environmental benefit. Originality/value With the assistance of energy storage devices such as EV and REH, the electrical system peak dispatching ability and power system operation efficiency has improved. More devices with energy-storage ability should be introduced into electrical power system to improve its synthetic benefit.