1.School of Electrical Engineering and Information, Southwest Petroleum University, Chengdu 610500, China;2.Petro China Southwest Oil & Gas Field Company, Chengdu 610051, China;3.School of Engineering, Cardiff University, Cardiff CF24 3AA, UK
Aiming at the low energy utilization rate caused by the single utilization mode of natural gas pressure energy and the difficulty of cold energy utilization in the pressure regulating stations, this paper proposes an integrated scheme of pressure energy generation and comprehensive cold energy utilization of natural gas high-pressure pipe network. Considering the instability of energy supply caused by the geographical characteristics of the pressure regulating station, the structure of an integrated micro-energy grid is constructed. It combines natural gas pressure energy with various energy sources such as electricity, gas, cold and heat to realize multi-energy coupling and complementation. Then, an integrated gas-electricity demand response model is established by introducing two types of responses, i.e., price-based demand response and incentive-based demand response. The former creates a demand response model of electricity load and gas load based on price elasticity matrix, while the latter carries out peak regulation of the natural gas pipeline network by using the subsidy. Comprehensively considering the energy consumption cost, operation and maintenance cost, environmental cost, and demand response of the micro integrated energy grid, an optimal dispatching model for integrated natural gas-electricity demand response of the micro-energy grid is proposed. The optimal dispatch results of electricity-gas-cold energy of the micro-energy grid in different scenarios are calculated and analyzed. The feasibility and effectiveness of the proposed integration scheme and the natural gas-electricity demand response model are also verified.
This work is supported by National Key R&D Program of China (No. 2017YFE0112600) and Science and Technology Planning Project of Sichuan Province (No. 2019YJ0279).
|||ZHANG An’an, FENG Yating, LIN Dong, et al. Gas-Electricity Demand Response Model for Micro-energy Grid Considering Comprehensive Utilization of Natural Gas Pressure Energy[J]. Automation of Electric Power Systems,2020,44(8):19-27. DOI:10.7500/AEPS20190908003|