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Gas and Electric Grid Unit Commitment with Coordinated N-1 Generator Contingency Analysis

The inter-dependency between the gas and electric grid is growing as the reliance on the gas-fired generators increases. Strong coupling between two large infrastructures requires a coordinated planning and operational framework. In fact, the constraints of both grids must be respected, while their objective functions are co-optimized. In this paper, we present a new formulation for Gas and Electric Grid Coordinated Unit Commitment (GECUC). We apply the standard DC power flow approximation and propose a new formulation to relax the non- linear gas grid constraints so that the GECUC can be mapped into a Mixed-Integer Linear Program (MILP). In addition, the N-1 generator contingency security constraints are extended to include the gas grid constraints and find the required reserve from gas wells and generators after the loss of a generating unit.

Author(s):

Mahdi Jamei    
Arizona State University
United States

Eran Schweitzer    
Arizona State University
United States

Anna Scaglione    
Arizona State University
United States

Kory Hedman    
Arizona State University
United States

 

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