A coordinated control method of voltage and reactive power for active distribution net-works based on soft open point

Li, Peng, Ji, Haoran, Wang, Chengshan, Zhao, Jinli, Song, Guanyu, Fei, Ding and Wu, Jianzhong ORCID: https://orcid.org/0000-0001-7928-3602 2017. A coordinated control method of voltage and reactive power for active distribution net-works based on soft open point. IEEE Transactions on Sustainable Energy 8 (4) , pp. 1430-1442. 10.1109/TSTE.2017.2686009

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Abstract

The increasing penetration of distributed generators (DGs) exacerbates the risk of voltage violations in active distribu-tion networks (ADNs). The conventional voltage regulation de-vices limited by the physical constraints are difficult to meet the requirement of real-time voltage and VAR control (VVC) with high precision when DGs fluctuate frequently. However, soft open point (SOP), a flexible power electronic device, can be used as the continuous reactive power source to realize the fast voltage regu-lation. Considering the cooperation of SOP and multiple regula-tion devices, this paper proposes a coordinated VVC method based on SOP for ADNs. Firstly, a time-series model of coordi-nated VVC is developed to minimize operation costs and eliminate voltage violations of ADNs. Then, by applying the linearization and conic relaxation, the original nonconvex mixed-integer non-linear optimization model is converted into a mixed-integer sec-ond-order cone programming (MISOCP) model which can be efficiently solved to meet the requirement of voltage regulation rapidity. Case studies are carried out on the IEEE 33-node system and IEEE 123-node system to illustrate the effectiveness of the proposed method.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Uncontrolled Keywords:	active distribution network (ADN), distributed generator (DG), soft open point (SOP), voltage and VAR control (VVC), mixed-integer second-order cone programming (MISOCP).
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
ISSN:	1949-3029
Funders:	EPSRC
Date of First Compliant Deposit:	10 May 2017
Date of Acceptance:	19 March 2017
Last Modified:	18 Nov 2023 18:08
URI:	https://orca.cardiff.ac.uk/id/eprint/99901

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