Research on Optimal Dispatch with Source-Load Coordination for Micro-energy Grid Based on Energy-Carbon Coupling Model

doi:10.11930/j.issn.1004-9649.202408095

Abstract

Abstract:

At present, the low-carbon dispatch of the integrated energy system focuses on the means of carbon reduction at the source side, while ignoring the low-carbon potential of the load side and the ability of carbon reduction for source-load coordination. Taking the micro energy grid coupled with power, heat and gas as the research object, an optimal dispatch method with source-load coordination of heterogeneous energy flow system based on energy-carbon coupling model is proposed, and a two-stage optimal dispatch framework of day-ahead and intra-day based on the process of source-load coordination is built. In the source side, the combined heat and power (CHP) units with adjustable heat-to-power ratio coupling with power-to-heat equipment are used for energy supply, and the dynamic carbon emission characteristic of each unit in the energy station is considered; In the grid side, the energy-carbon coupling model of power and heat energy is established by using the carbon emission flow theory, and the obtained distribution of carbon intensity is transferred to the load side; Based on this carbon information and considering the impact of time-sharing energy price, the load side guides the load to adjust behaviors of energy consumption in real time to respond to low-carbon demand, and feeds back the updated load to the source side to re-optimize the output of each unit, so as to realize the process of source-load coordination. The effectiveness of the proposed method is verified by analyzing the micro energy grid composed of the improved IEEE 33-node power grid and the Barry Island 32-node heat grid.

Key words: energy-carbon coupling model, micro-energy grid, source-load coordination, optimal dispatch, adjustable heat-to-power ratio, dynamic carbon emission characteristic, low-carbon demand response

XU Shijie, HU Bangjie, ZHAO Liang, WANG Pei. Research on Optimal Dispatch with Source-Load Coordination for Micro-energy Grid Based on Energy-Carbon Coupling Model[J]. Electric Power, 2025, 58(4): 1-12.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202408095

https://www.electricpower.com.cn/EN/Y2025/V58/I4/1

Figures/Tables 15

References 26

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时段		$\chi _t^{{\text{power}}}$/(元·(kW·h)^–1)
22:00—次日07:00和14:00—18:00		0.34
07:00—11:00		0.64
11:00—14:00和18:00—22:00		0.97

时段		$\chi _t^{{\text{power}}}$/(元·(kW·h)^–1)
22:00—次日07:00和14:00—18:00		0.34
07:00—11:00		0.64
11:00—14:00和18:00—22:00		0.97

时段		$\chi _t^{{\text{heat}}}$/(元·(kW·h)^–1)
22:00—次日08:00和12:00—17:00		0.36
08:00—12:00和17:00—22:00		0.38

时段		$\chi _t^{{\text{heat}}}$/(元·(kW·h)^–1)
22:00—次日08:00和12:00—17:00		0.36
08:00—12:00和17:00—22:00		0.38

参数	数值	参数	数值
$G_{i,\max }^{{\text{CHP}}}$、$G_{\max }^{{\text{GB}}}$/MW	15	$y_{i,\max }^{{\text{P2H}}}$	0.3
$\mu _{i,{\text{do}}}^{{\text{CHP}}}$、$ \mu _{{\text{do}}}^{{\text{GB}}} $/%	10	$\eta _{{\text{CHP}},i,\min }^{{\text{power}}}$、$\eta _{{\text{CHP}},i,\max }^{{\text{power}}}$	0.3、0.4
$\mu _{i,{\text{up}}}^{{\text{CHP}}}$、$ \mu _{{\text{up}}}^{{\text{GB}}} $/%	10	$\eta _{{\text{CHP}},i,\min }^{{\text{heat}}}$、$\eta _{{\text{CHP}},i,\max }^{{\text{heat}}}$	0.25、0.55
${\eta _{{\text{GB}}}}$	0.9	${\eta _{{\text{HP}}}}$、${\eta _{{\text{EB}}}}$	3.0、0.95