Coordinated Planning Strategies of Power Systems and Energy Transportation Networks for Resilience Enhancement

Steady and continuous supply of primary energy sources under extreme events is crucial to maintaining the stable operation of power systems, especially for those with highly penetrated renewable generation which is usually underestimated or ignored in existing works. This paper proposes a coordinated planning method of power systems and energy transportation networks (ETNs) for resilience enhancement. Considering both haulage roads and gas pipes, the ETN model is first formulated in the range of primary energy sources and expanded to a more generalized conception subsequently. Then a series of novel uncertainty sets are proposed to simulate the road capacity loss and renewable power variations under extreme events as the extensions of conventional state-attack ones. Based on them, a resilience constrained coordinated planning model is established in which the expansion decisions of both power systems and ETNs are considered as well as the potential influence of extreme events on them. Correspondingly, a solution method is developed to solve the proposed tri-level model efficiently. The case studies on the modified IEEE-RTS have verified the validity of the proposed resilient planning method. The significance of ETNs to power system economical operation and resilience enhancement has also been revealed.