Open AccessA Day-Ahead Scheduling Model of Electricity-Gas Integrated System with Power-to-Gas
Author(s) -
Jiacheng Ruan,
Yongji Cao
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2121/1/012003
Subject(s) - power to gas , linearization , natural gas , electric power system , mathematical optimization , economic dispatch , scheduling (production processes) , electricity , dispatchable generation , electricity generation , integer programming , nonlinear programming , power system simulation , engineering , piecewise , power (physics) , computer science , nonlinear system , distributed generation , electrical engineering , renewable energy , mathematics , mathematical analysis , chemistry , physics , electrolysis , electrode , quantum mechanics , electrolyte , waste management
In recent years, with the increasing of gas-fired power plants and the development of power-to-gas (P2G) technology, and the interdependence between the power system and the natural gas system has gradually deepened. This paper proposes a day-ahead optimal scheduling model for an electricity-gas integrated system. Based on P2G, it can realize the two-way movement of energy between the power system and the natural gas system, promote the coordinated and optimized operation of the two energy systems, and improve energy utilization. The model proposed in this paper minimizes the total cost of both systems. Firstly, the power system sub-model and the natural gas system sub-model in the collaborative optimization model are studied separately, and the constraints between the two systems are considered. Then, the piecewise linearization method and DC power flow simplification method are adopted, the nonlinear problem is transformed into a mixed integer linear programming problem. Finally, the load forecast value of the day-ahead dispatch is loaded, and the 24-hour dispatch result is obtained through the simulation platform, and the P2G is used for joint dispatch.