Optimal Gas Storage Capacity in Gas Power Plants Considering Electricity and Natural Gas Systems Constraints

With the increasing reliance on natural gas, the power supply reliability of power systems is affected by the natural gas transmission capacity limits. Installing a certain amount of gas storage device is a feasible way to deal with this problem. The aim of this paper is to establish an optimal storage capacity model satisfying both electricity and natural gas systems constraints. In order to illustrate its benefits, this paper also established model utilizing coal power plants to supplement the lack of power supply due to gas shortage. Case studies demonstrated the effectiveness of gas storage in two aspects as annual costs and carbon emissions. It was found that the installation of gas storage devices in gas power plants can greatly improve its reliability of power supply. And the capacity obtained by the proposed model in this paper is the optimal capacity. (C) 2017 The Authors. Published by Elsevier Ltd.