Load Transfer Flexibility Analysis of Distribution Network with Electric Energy Routers

doi:10.16183/j.cnki.jsjtu.2021.541

Abstract

Abstract:

With the increase of the penetration rate of distributed generation (DG), lack of flexibility of distribution network has become increasingly prominent. This paper focuses on electric energy router (EER), and analyzes its impact on the flexibility of distribution network. First, the index of the transfer flexibility of distribution network is proposed to represent one aspect of distribution network flexibility. Then, the linear model of the EER and its related constraints are analyzed, and an optimization model of the transfer flexibility of the active distribution network with the EER model is constructed. Finally, based on the 94-bus alternating current distribution network, different scenarios are designed to analyze and compare the effects of different DG operation control modes and different parameters of EER on the transfer flexibility of distribution network. The effectiveness of EER in improving the transfer flexibility of distribution network is verified.

Key words: electric energy router (EER), transfer flexibility, second-order cone programming, distributed generation (DG), distribution network

CLC Number:

TM711

ZHANG Peng, LÜ Gongxiang, LIU Zhijie, ZHU Shouzhen, SHAO Zhiyong. Load Transfer Flexibility Analysis of Distribution Network with Electric Energy Routers[J]. Journal of Shanghai Jiao Tong University, 2023, 57(5): 513-520.

Figures/Tables 9

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Tab.1

Transfer flexibility of AC distribution network

系统	P_min,_i/MW	P_max,_i/MW	$P - i$ /MW	E/MW
变电站1	10.908	19.625	25.266 5	8.717
变电站2	9.276	18.078	16.677	8.802
配电网				8.757

Tab.1

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