Day-ahead optimal scheduling of power–gas–heating integrated energy system considering energy routing

Abstract

Compared with independent scheduling, the coupled scheduling of integrated energy system can effectively reduce the operating cost and improve the consumption of renewable energy, which has become a major research hotspot. However, in an integrated system, uncertainties from one area could directly affect another, which could reduce the reliability and result in instability of the whole integrated energy system. This paper constructs a power–gas–heating integrated system based on energy routers and energy routing algorithm to study the day-ahead coordinated optimal scheduling strategy. At the same time, the power and natural gas flow are comprehensively considered, and the structure of the multi-port energy router with integrated energy and the energy routing algorithm are proposed to realize the power optimization and energy routing between the power, gas and heating networks. The numerical case studies illustrate that the energy router and proposed cooperative scheduling strategy can improve the energy supply reliability, scheduling flexibility, renewable energy consumption and economic benefits of the integrated energy system.