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

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.