Joint Economic Dispatch of Integrated Electricity-Gas Energy System and Double-track Freight Railway Network

Joint Economic Dispatch of Integrated Electricity-Gas Energy System and Double-track Freight Railway Network

Scheduling

Natural gas transportation

Liquefied natural gas

Railroad transportation

Integer programming

Gases

Compressibility of gases

Railroads

Electric load dispatching

Piecewise linear techniques

Although the transportation tends to serve as flexible loads to smooth the energy demand profile, the transportation capacity is far from fully exploited to promote the efficiency of energy systems. Railways can transport a large volume of liquefied natural gas (LNG) to natural gas networks, providing an alternative to pipelines. Motivated by this idea, this paper interconnects integrated electricity-gas energy systems (IEGES) with double-track freight railway networks (DTFRN) and proposes a joint economic dispatch model for integrated railway-electricity-gas systems (IREGS) considering railway operation requirements. The model is formulated into a solvable mixed integer linear programming by applying the piecewise linear approximation method on Weymouth equation. Simulations tested on a modified IREGS system proves the effectiveness of the dispatch model. The results show that the DTFRN is of benefit in reducing the amount of compressor-consumed gas and enhancing the gas peaking capacity, and therefore it lowers the operation cost of the IREGS. 2020 IEEE.

1269-1274

2020 IEEE Sustainable Power and Energy Conference, iSPEC 2020, November 23, 2020 - November 25, 2020

2020

Jiang, Lizhou

Bie, Zhaohong

Long, Tao

Xiao, Yao

Xie, Haipeng

conferencePaper

10.1109/iSPEC50848.2020.9351034