Distributed Operation Strategy of Electricity-Gas Integrated System Based on Improved ADMM

Abstract

The coupling degree of electricity and gas systems is deepening nowadays. This paper proposes a distributed operation strategy based on improved alternate direction multiplier method (ADMM). Firstly, the gas turbine and energy storage equipment models are established, in which the radial distribution network and the natural gas network model considering dynamic characteristics are considered. Secondly, a day-ahead scheduling model with operating cost as the objective function is established. And the uncertainty of renewable energy is handled with chance constraints. In addition, a distributed optimal operation method based on ADMM with adaptive step size is proposed with consideration of the information opacity between the electricity and gas systems. Finally, the rationality and effectiveness of the proposed model and optimization framework for the electricity-gas system are verified through case studies.