Exergoeconomic Analysis of Integrated Energy Systems of Power to Gas-Carbon Capture Power Plant

doi:10.12096/j.2096-4528.pgt.260102

Abstract

Abstract:

Objectives Considering the premise of clean and low-carbon system, the pricing of energy products in the integrated energy system is closely related to the economic interests of market users and the profitability of energy operators. Exergic economic analysis of integrated energy system (IES) containing power to gas-carbon capture power plant (P2G-CCPP) is proposed. Methods From the perspective of exergy, both the quantity and quality of energy were taken into account, exergy values are calculated for different energy flows, and a sub-model of exergy flow calculation is established. The low carbon economy of the system is introduced into the exergic economic analysis. The carbon emission trading cost, carbon capture energy cost and carbon storage cost are included in the non-energy cost. The exergic economic cost distribution model is established. Compared with traditional pricing methods, the paper considered the impact of carbon cost and energy grade difference on the exergic cost of the system, reflecting the principle of good quality and good price. Results Simulation examples show that the P2G-CCPP linkage system can improve the low carbon emission reduction ability of the system and realize the reasonable cost allocation. Conclusions The integrated energy system with P2G-CCPP units can effectively reduce the total system cost and the unit cost of cooling, heating and power, enhance the energy conservation and emission reduction approaches of carbon utilization and gas production and consumption, and has significant economic and social benefits.

Key words: integrated energy system, power to gas, carbon capture power plants, exergy flow, exergoeconomy, cost allocation

CLC Number:

TK 01

Xiuyun WANG, Wanyu ZHANG. Exergoeconomic Analysis of Integrated Energy Systems of Power to Gas-Carbon Capture Power Plant[J]. Power Generation Technology, 2026, 47(1): 14-25.

Figures/Tables 14

References 31

[1]	刘英培，黄寅峰．考虑碳排权供求关系的多区域综合能源系统联合优化运行[J]．电工技术学报，2023，38(13)：3459-3472．
	LIU Y P， HUANG Y F ．Joint optimal operation of multi-regional integrated energy system considering the supply and demand of carbon emission rights[J]．Transactions of China Electrotechnical Society，2023，38(13)：3459-3472．
[2]	崔杨，曾鹏，王铮，等．计及电价型需求侧响应含碳捕集设备的电-气-热综合能源系统低碳经济调度[J]．电网技术，2021，45(2)：447-461．
	CUI Y， ZENG P， WANG Z，et al ．Low-carbon economic dispatch of electricity-gas-heat integrated energy system with carbon capture equipment considering price-based demand response[J]．Power System Technology，2021，45(2)：447-461．
[3]	张海峰，李晓华，周兴华．考虑需求响应与碳交易的综合能源系统优化调度策略[J]．电力科学与技术学报，2025，40(5)：218-226．
	ZHANG H F， LI X H， ZHOU X H ．Optimization scheduling strategy of integrated energy system considering demand response and carbon trading[J]．Journal of Electric Power Science and Technology，2025，40(5)：218-226．
[4]	张程，曾崟琳，匡宇．考虑需求响应和碳捕集电厂灵活运行方式的综合能源系统调度[J]．智慧电力，2024，52(9)：88-95．
	ZHANG C， ZENG Y L， KUANG Y ．Integrated energy system scheduling considering demand response and flexible operation of carbon capture power plant[J]．Smart Power，2024，52(9)：88-95．
[5]	陈图南，李文萱，李云，等．“双碳”背景下碳-绿证-电力市场耦合机制综述[J]．广东电力，2024，37(8)：14-25．
	CHEN T N， LI W X， LI Y，et al ．Review on coupling mechanism of carbon，green certificate and power market under the background of carbon peaking and carbon neutrality[J]．Guangdong Electric Power，2024，37(8)：14-25．
[6]	李红伟，吴佳航，王佳怡，等．计及P2G及碳捕集的风光氢储综合能源系统低碳经济调度[J]．电力系统保护与控制，2024，52(16)：26-36．
	LI H W， WU J H， WANG J Y，et al ．Low-carbon economic dispatch of a wind，solar，and hydrogen storage integrated energy system considering P2G and carbon capture[J]．Power System Protection and Control，2024，52(16)：26-36．
[7]	胡景成，范耘豪，朱同，等．基于同态加密的综合能源系统完全分布式低碳经济调度[J]．中国电力，2025，58(2)：164-175．
	HU J C， FAN Y H， ZHU T，et al ．Distributed low-carbon economic dispatch for integrated energy system based on homomorphic encryption[J]．Electric Power，2025，58(2)：164-175．
[8]	何旭东，刘炜焘，郑宇辰，等．双碳目标下需求侧参与的电力市场电能响应相关策略研究[J]．电测与仪表，2025，62(12)：41-47．
	HE X D， LIU W T， ZHENG Y C，et al ．Study on relevant strategies of power response in electricity market with demand-side participation under dual-carbon target[J]．Electrical Measurement & Instrumentation，2025，62(12)：41-47．
[9]	冀肖彤，杨东俊，方仍存，等．“双碳”目标下未来配电网构建思考与展望[J]．电力建设，2024，45(2)：37-48．
	JI X T， YANG D J， FANG R C，et al ．Research and prospect of future distribution network construction under dual carbon target[J]．Electric Power Construction，2024，45(2)：37-48．
[10]	胡山鹰，金涌，张臻烨．发展新质生产力，实现碳中和[J]．发电技术，2025，46(1)：1-8．
	HU S Y， JIN Y， ZHANG Z Y ．Developing new quality productive forces to achieve carbon neutrality[J]．Power Generation Technology，2025，46(1)：1-8．
[11]	周步祥，夏海东，臧天磊．考虑能量梯级利用的园区综合能源系统站网协同规划[J]．电力自动化设备，2022，42(1)：20-27． doi:10.1016/j.gloei.2021.03.004
	ZHOU B X， XIA H D， ZANG T L ．Station and network coordinated planning of park integrated energy system considering energy cascade utilization[J]．Electric Power Automation Equipment，2022，42(1)：20-27． doi:10.1016/j.gloei.2021.03.004
[12]	CHEN Z， ZHANG Y， JI T，et al ．Coordinated optimal dispatch and market equilibrium of integrated electric power and natural gas networks with P2G embedded[J]．Modern Power Systems and Clean Energy，2018，6(3)：495-508． doi:10.1007/s40565-017-0359-z
[13]	ZHANG Z， WANG C， LV H，et al ．Day-ahead optimal dispatch for integrated energy system considering power-to-gas and dynamic pipeline networks[J]．IEEE Transactions on Industry Applications，2021，57(4)：3317-3328． doi:10.1109/tia.2021.3076020
[14]	李天格，胡志坚，陈志，等．计及电-气-热-氢需求响应的综合能源系统多时间尺度低碳运行优化策略[J]．电力自动化设备，2023，43(1)：16-24．
	LI T G， HU Z J， CHEN Z，et al ．Multi-time scale low-carbon operation optimization strategy of integrated energy system considering electricity-gas-heat-hydrogen demand response[J]．Electric Power Automation Equipment，2023，43(1)：16-24．
[15]	ANG S， LI B W， YANG X S，et al ．Performance of sorption-enhanced chemical looping gasification system coupled with solid oxide fuel cell using exergy analysis[J]．International Journal of Hydrogen Energy，2021，46(2)：1752-1761． doi:10.1016/j.ijhydene.2020.10.111
[16]	HE L， LU Z， ZHANG J，et al ．Low-carbon economic dispatch for electricity and natural gas systems considering carbon capture systems and power-to-gas[J]．Applied energy，2018，224：357-370． doi:10.1016/j.apenergy.2018.04.119
[17]	ZHANG Q， LIU X， ZHANG T，et al ．Performance optimization of a heat pump driven liquid desiccant dehumidification system using exergy analysis[J]．Energy，2020，204：117891． doi:10.1016/j.energy.2020.117891
[18]	CALISKAN H， AÇIKKALP E， TAKLEH H R，et al ．Advanced，extended and combined extended-advanced exergy analyses of a novel geothermal powered combined cooling，heating and power (CCHP) system[J]．Renewable Energy，2023，206：125-134． doi:10.1016/j.renene.2023.02.032
[19]	AÇIKKALP E， CALISKAN H， HONG H，et al ．Extended exergy analysis of a photovoltaic-thermal (PVT) module based desiccant air cooling system for buildings[J]．Applied Energy，2022，323：119581． doi:10.1016/j.apenergy.2022.119581
[20]	王丹，周天烁，李家熙，等．面向能源转型的高㶲综合能源系统理论与应用[J]．电力系统自动化，2022，46(17)：114-131． doi:10.7500/AEPS20220331003
	WANG D， ZHOU T S， LI J X，et al ．Theory and application of high-exergy integrated energy system for energy transition[J]．Automation of Electric Power Systems，2022，46(17)：114-131． doi:10.7500/AEPS20220331003
[21]	MENBERG K，HEO Y， CHOI W，et al ．Exergy analysis of a hybrid ground-source heat pump system[J]．Applied Energy，2017，204：31-46． doi:10.1016/j.apenergy.2017.06.076
[22]	华惠莲，王军，陈玉柱，等．天然气冷热电联供系统热经济优化研究[J]．热能动力工程，2023，38(2)：26-32．
	HUA H L， WANG J， CHEN Y Z，et al ．Thermal economic optimization of natural gas combined cooling heating and power system[J]．Journal of Engineering for Thermal Energy and Power，2023，38(2)：26-32．
[23]	李家熙，王丹，贾宏杰．面向综合能源系统㶲流机理与分析方法[J]．电力系统自动化，2022，46(12)：163-173．
	LI J X， WANG D， JIA H J ．Exergy flow mechanism and analysis method for integrated energy system[J]．Automation of Electric Power Systems，2022，46(12)：163-173．
[24]	HU X， ZHANG H， CHEN D，et al ．Multi-objective planning for integrated energy systems considering both exergy efficiency and economy[J]. Energy，2020，197：117155． doi:10.1016/j.energy.2020.117155
[25]	SONG J， ZHANG L， JIANG Q，et al ．Estimate the daily consumption of natural gas in district heating system based on a hybrid seasonal decomposition and temporal convolutional network model[J]．Applied Energy，2022，309：118444． doi:10.1016/j.apenergy.2021.118444
[26]	程泽扬，蔡磊，吴谋亮，等．LNG富氧燃烧电厂㶲及㶲经济分析[J]．煤气与热力，2022，42(1)：1-9． doi:10.3969/j.issn.1000-4416.2022.1.mqyrl202201010
	CHENG Z Y， CAI L， WU M L，et al ．Exergy and exergy-economic analysis of LNG oxygen enriched combustion power plant[J]．Gas & Heat，2022，42(1)：1-9． doi:10.3969/j.issn.1000-4416.2022.1.mqyrl202201010
[27]	周洋，王进，任胜男，等．计及碳捕集设备的电-气互联综合能源系统低碳经济调度[J]．电器与能效管理技术，2020(4)：106-112．
	ZHOU Y， WANG J， REN S N，et al ．Low carbon economic dispatching of electric-gas interconnection integrated energy source system considering carbon capture equipment[J]．Electrical & Energy Management Technology，2020(4)：106-112．
[28]	WANG R， WEN X， WANG X，et al ．Low carbon optimal operation of integrated energy system based on carbon capture technology，LCA carbon emissions and ladder-type carbon trading[J]．Applied Energy，2022，311：118664． doi:10.1016/j.apenergy.2022.118664
[29]	崔杨，曾鹏，仲悟之，等．考虑富氧燃烧技术的电-气-热综合能源系统低碳经济调度[J]．中国电机工程学报，2021，41(2)：592-608． doi:10.13334/j.0258-8013.pcsee.191708
	CUI Y， ZENG P， ZHONG W Z，et al ．Low-carbon economic dispatch of electro-gas-thermal integrated energy system based on oxy-combustion technology[J]．Proceedings of the CSEE，2021，41(2)：592-608． doi:10.13334/j.0258-8013.pcsee.191708
[30]	魏伟，叶利，方毅，等．考虑碳排放配额和碳交易的新能源电力系统日前优化调度[J]．电网与清洁能源，2024，40(1)：130-136． doi:10.3969/j.issn.1674-3814.2024.01.014
	WEI W， YE L， FANG Y，et al ．Day-ahead optimal scheduling of new energy power system considering carbon emission quota and carbon trading[J]．Power System and Clean Energy，2024，40(1)：130-136． doi:10.3969/j.issn.1674-3814.2024.01.014
[31]	连进步，张泠，高效，等．基于㶲经济学的综合能源系统动态冷热电成本[J]．中国电力，2022，55(10)：161-169．
	LIAN J B， ZHANG L， GAO X，et al ．Dynamic cost of cooling， heating and power in integrated energy system based on exergy economics[J]．Electric Power，2022，55(10)：161-169．

符号	㶲流	符号	㶲流
E₁	风电输出电㶲	E₁₀	燃气轮机耗气㶲
E₂	天然气购气㶲	E₁₁	燃气轮机输出蒸汽㶲
E₃	P2G输入电㶲	E₁₂	燃气锅炉耗气㶲
E₄	P2G输出天然气㶲	E₁₃	燃气锅炉输出蒸汽㶲
E₅	燃气轮机输出电㶲	E₁₄	尖峰加热器输出热水㶲
E₆	碳捕集电厂输出电㶲	E₁₅	燃气轮机输出低温热水㶲
E₇	系统输出电负荷㶲	E₁₆	吸收式制冷机输出冷水㶲
E₈	电制冷机输入电㶲	E₁₇	系统输出冷负荷㶲
E₉	电制冷机输出冷水㶲	E₁₈	系统输出热负荷㶲

符号	㶲流	符号	㶲流
E₁	风电输出电㶲	E₁₀	燃气轮机耗气㶲
E₂	天然气购气㶲	E₁₁	燃气轮机输出蒸汽㶲
E₃	P2G输入电㶲	E₁₂	燃气锅炉耗气㶲
E₄	P2G输出天然气㶲	E₁₃	燃气锅炉输出蒸汽㶲
E₅	燃气轮机输出电㶲	E₁₄	尖峰加热器输出热水㶲
E₆	碳捕集电厂输出电㶲	E₁₅	燃气轮机输出低温热水㶲
E₇	系统输出电负荷㶲	E₁₆	吸收式制冷机输出冷水㶲
E₈	电制冷机输入电㶲	E₁₇	系统输出冷负荷㶲
E₉	电制冷机输出冷水㶲	E₁₈	系统输出热负荷㶲

设备	最大输出功率/MW	效率
火电厂	500	—
P2G	80	0.6
燃气轮机	300	0.35(热)/0.25(电)
燃气锅炉	400	0.8
尖峰加热器	100	0.89
吸收式制冷机	50	1.05
电制冷机	50	3

设备	最大输出功率/MW	效率
火电厂	500	—
P2G	80	0.6
燃气轮机	300	0.35(热)/0.25(电)
燃气锅炉	400	0.8
尖峰加热器	100	0.89
吸收式制冷机	50	1.05
电制冷机	50	3

电网峰谷	时段	电价/[元/(MW⋅h)]
谷时	00：00—08：00	313.9
平段	13：00—17：00，22：00—24：00	641.8
高峰	09：00—12：00，18：00—21：00	1 069.7