Economic dispatch of multi-energy complementary systems considering multi-period scales and regional stratification

doi:10.3969/j.issn.2097-0706.2024.04.007

Abstract

Abstract:

To complete the coupling and interconnection of electric and heating sources，an economic dispatch strategy for electric-heating coupled multi-energy complementary systems considering multi-period scales and regional stratification is provided. Analyzing from the perspectives of single period and multi-period，this strategy comprehensively considers the energy balance relationship at local level and regional level to achieve the economic dispatch of a multi-energy complementary system. Firstly，bus electric balance model and bus heating balance model are established based on the collected data and information of local-level energy resources. Secondly，a common bus energy balance model at regional level is proposed，in which the equivalent idea is adopted to aggregate the units of the same type. Then， a typical electric-heating coupled energy system model at local level is established. Finally，the economic scheduling results are obtained from the electric-heating coupled system dispatch strategy implementation. The effectiveness and rationality of the economic dispatch of the electric-heating coupled multi-energy complementary system have been verified through simulation examples，providing reference and theoretical guidance for multi-energy complementary utilization，resource coordination，economic and efficient operation of the multi-energy complementary systems at regional level.

Key words: energy balance, electric-heating coupled multi-energy complementary system, multi-energy flow, integrated energy system, multi-period, electric-heating interconnection, economic dispatch

CLC Number:

TM73：TK01

ZHONG Yongjie, WANG Zidong, ZUO Jianxun, WANG Changqing, LI Jingxia, JI Ling. Economic dispatch of multi-energy complementary systems considering multi-period scales and regional stratification[J]. Integrated Intelligent Energy, 2024, 46(4): 52-59.

Figures/Tables 6

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Table 1

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节点编号	电源类型	缩写符号	装机容量/MW
30	火电	TU	150.2
31	火电	TU	36.0
32	火电	TU	100.2
33	光伏	PV	89.2
34	火电	TU	7.5
35	热电	CHP ^#2	660.4
36	风电	WT	32.7
37	火电	TU	30.1
38	热电	CHP ^#1	24.1
39	火电	TU	1 840.3