THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Sha Liu

,

Jiong Shen

,

Junli Zhang

,

Xiao Wu

THERMOECONOMIC SIMULATION OF A COMPLEX ENERGY SYSTEM FOR PERFORMANCE ANALYSIS AND PREDICTION IN DEEP PEAK SHAVING

ABSTRACT
The establishment of a cost model for complex energy systems based on thermoeconomics can provide technical and economic evaluation indicators for complex energy systems. At the same time, to integrate more renewable energy into the grid, complex energy systems must participate in deep peak shaving. To evaluate the technical-economic performance of complex energy systems involved in deep peak shaving, a novel thermoeconomic cost construction method is proposed based on the production structure diagram, using the gas-steam combined cycle system as an example. These can effectively avoid the derivation error of high-dimensional models, improve the modeling and calculation speed, and obtain the variation trend of system thermoeconomics cost under load changes and operating parameter changes. The results show that the external and internal factor can change the power generator thermoeconomic cost. The power generation cost of the system increases with increasing natural gas price and environmental temperature. When the compressor pressure ratio increases, the power generation cost of the system also increases. At 100% load, the power generation cost reaches its lowest value when the exhaust temperature is equal to 615°C.
KEYWORDS
complex energy systems, deep peak shaving, performance analysis, performance prediction, thermoeconomic cost
PAPER SUBMITTED: 2024-04-17
PAPER REVISED: 2024-06-17
PAPER ACCEPTED: 2024-07-30
PUBLISHED ONLINE: 2024-10-12
DOI REFERENCE: https://doi.org/10.2298/TSCI240417232L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 5, PAGES [4285 - 4295]
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Thermoeconomic simulation of a complex energy system for performance analysis and prediction in deep peak shaving

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence