Optimized Dispatch of Park Integrated Energy System with Thermoelectric Flexible Response under Green Certificate-Carbon Trading Mechanism

doi:10.11930/j.issn.1004-9649.202308061

Abstract

Abstract:

In order to further improve the consumption rate of renewable energy and the low carbon and economy of the park integrated energy system (PIES), this paper proposes a low-carbon economic scheduling strategy for PIES, which considers the green certificate-carbon trading mechanism and the thermoelectric flexible response of combined heat and power (CHP) units. Firstly, a green certificate-carbon trading mechanism is established using the green certificate trading model and the stepped carbon trading model to improve the consumption of renewable energy within the system and decrease carbon emissions. Secondly, a thermoelectric flexible response model for CHP units is established by introducing the organic Rankine cycle into the system in combination with the conventional CHP units and electric boilers, thereby optimizing the system operations and providing greater application scope for the green certificate-carbon trading mechanism. Finally, with the goal of minimizing the total cost of the system, an optimization model of the PIES is constructed with consideration of the green certificate-carbon trading mechanism and the thermoelectric flexible response of the CHP units. The results show that the proposed strategy can improve the consumption rate of renewable energy, and reduce the carbon emissions and the total cost of the system.

Key words: carbon emission trading, green certificate trading, thermoelectric flexible response, park integrated energy system, low-carbon economic dispatch

Xinglong CHEN, Ximin CAO, Jie CHEN, Jun LIU, Yuchao ZHANG, Hongyin BAO. Optimized Dispatch of Park Integrated Energy System with Thermoelectric Flexible Response under Green Certificate-Carbon Trading Mechanism[J]. Electric Power, 2024, 57(6): 110-120.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202308061

https://www.electricpower.com.cn/EN/Y2024/V57/I6/110

Figures/Tables 15

Fig.1 Park integrated energy system framework

Fig.2 Predicted output of renewable energy and load curves in PIES

Fig.3 Time-of-use electricity price

Table 1 Equipment parameters

设备	容量/kW	能量转换效率/%
设备	容量/kW	气转电	气转热
燃气轮机	1000	30	60
电锅炉	500	90
余热锅炉	600	90
有机朗肯循环	600	80
热泵	250	410
电制冷机	400	240
吸收式制冷机	500	80
风力发电	2000
光伏	800

Table 2 Energy storage parameters

设备	容量/kW	容量下限约束/%	容量上限约束/%
蓄电池	450	20	90
蓄热罐	500	20	90

Table 3 Running results of all scenarios

场景	碳排放量/kg	经济成本/元
场景	碳排放量/kg	CET	GCT	系统运行	总计
1	15384.29	6524.44		11792.98	18317.42
2	14860.52	6380.25		10966.37	17346.62
3	14351.82	5983.46	–1439.03	10315.64	14860.07
4	13480.17	5601.97	–1528.41	9596.32	13669.88

Fig.4 Electric power balance in scenario 4

Fig.5 Thermal power balance in scenario 4

Fig.6 Cold power balance in scenario 4

Fig.7 CHP output power in scenario 4

Fig.8 GT electric power output in scenario 4

Fig.9 GT thermal power output in scenario 4

Fig.10 Renewable energy consumption rate of each scenario system

Fig.11 Consumption of renewable energy under different green certificate prices

Fig.12 Impact curves of different quota coefficients

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