Comparison of various solution techniques in dispatching coupled electricity-heat system with independent thermal energy storage

Notable benefit can be brought by combined operation of coupled electricity-heat system (CEHS) and be enhanced by introducing independent thermal energy storage (ITES). With prevalent constant-flow variable temperature (CF-VT) control strategy of heat network, explicitly formulating CEHS with ITES l...

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Veröffentlicht in:IET renewable power generation Jg. 14; H. 3; S. 344 - 351
Hauptverfasser: Liu, Bin, Meng, Ke, Dong, Zhao Yang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: The Institution of Engineering and Technology 24.02.2020
Schlagworte:
approximation methods
approximation theory
CEHS
CF‐VT
computation efficiency
concave programming
constant‐flow variable temperature control strategy
constructed systems
dispatching coupled electricity‐heat system
electric heat networks
heat systems
independent thermal energy storage
integer programming
ITES
MISOCP formulation
mixed integer second‐order cone programming problem
mixed‐integer nonconvex programming
power generation control
power generation dispatch
reformulation methods
Special Issue: Multi-carrier Energy Storage for Harnessing Renewable Generation
temperature control
thermal energy storage
approximation theory
constructed systems
integer programming
dispatching coupled electricity-heat system
temperature control
reformulation methods
power generation control
heat systems
mixed-integer nonconvex programming
independent thermal energy storage
mixed integer second-order cone programming problem
approximation methods
thermal energy storage
power generation dispatch
CEHS
computation efficiency
constant-flow variable temperature control strategy
electric heat networks
MISOCP formulation
CF-VT
ITES
concave programming
ISSN:1752-1416, 1752-1424, 1752-1424
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Zusammenfassung:Notable benefit can be brought by combined operation of coupled electricity-heat system (CEHS) and be enhanced by introducing independent thermal energy storage (ITES). With prevalent constant-flow variable temperature (CF-VT) control strategy of heat network, explicitly formulating CEHS with ITES leads to mixed-integer non-convex programming. Although the problem can be reformulated as a mixed integer second-order cone programming (MISOCP) problem and solved by commercial solvers, improving the computation efficiency still needs more effort. Here, several alternative solution techniques, based on either reformulation or approximation methods, are studied and compared with the original MISOCP formulation. The computation efficiencies as well as on the solution accuracies of various solution techniques or a combination of them are investigated and analysed based on two constructed systems. Simulation results reveal that appropriately selecting formulations of electric and heat networks can effectively improve the performance of solving the original problem.
ISSN:1752-1416
1752-1424
1752-1424
DOI:10.1049/iet-rpg.2019.0654