Optimal Dispatch of Integrated Electricity-Natural Gas System Considering Demand Response and Dynamic Natural Gas Flow
Release time:2018-10-25
Hits:
- Indexed by:
- Journal paper
- First Author:
- Yining Zhang
- Correspondence Author:
- Yubin He
- Co-author:
- Mingyu Yan,Chuangxin Guo,Shiying Ma,Dunwen Song
- Journal:
- Automation of Electric Power Systems
- Included Journals:
- EI
- Place of Publication:
- China
- Discipline:
- Engineering
- First-Level Discipline:
- Electrical Engineering
- Document Type:
- J
- Volume:
- 42
- Issue:
- 20
- Page Number:
- 1-8
- Key Words:
- integrated electricity-natural gas system; demand response; dynamic characteristic; exact cone relaxation; time-of-use price; day-ahead dispatch
- DOI number:
- 10.7500/AEPS20180128005
- Date of Publication:
- 2018-10-25
- Impact Factor:
- 7.086
- Abstract:
- This paper presents a novel optimal dispatch model of integrated electricity-natural gas system(IEGS)considering demand response and dynamic natural gas flow. On the one hand, energy demand response is included into the proposed model to smooth out day-ahead load curves of electricity and gas, which can improve system efficiency by utilizing the complementary characteristic between different types of energy. Demand side response is detailedly described by price-based and alternative response. The former is used to denote the transfer effect of the same kind of energy among different time periods based on price guidance, while the latter is used to denote the substitution of different kinds of energy at the same time. On the other hand, complicated dynamic natural gas flow function is considered in the proposed model to describe the operation status of the system. The primal operation nonlinear nonconvex model is relaxed into second-order cone programming, which can be directly solved, and the sequential cone programming method is applied to guarantee the strictness of the relaxation. Simulation tests validate that demand response can improve the operational efficiency of IEGS. Compared to the steady-state model, dynamic model can better describe the dynamic process of natural gas network.