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The interactions of the natural gas (NG) network and the electricity system are increased by using gas‐fired generation units, which use NG to produce electricity. There are various uncertainty sources such as the forced outage of generating units or market price fluctuations that affect the economic operation of both NG and electricity systems. This study focuses on the steady‐state formulation of the integrated NG transmission grid and electricity system by considering the uncertainty of electricity market price based on information gap decision theory. The higher and lower costs than the expected cost originated from the fluctuations of electricity market price are modelled by the robustness and opportunity functions, respectively. The objective is to minimise the cost of zone one while satisfying the constraints of two interdependent systems, which can obtain revenue from selling power to its connected zones in short‐term scheduling. The capability of the proposed method is demonstrated by applying it on a 20‐node NG network and IEEE RTS 24‐bus. The proposed short‐term coordination between NG and electricity infrastructures is solved and discussed.

Coordination of interdependent natural gas and electricity systems based on information gap decision theory