Benefits analysis of Soft Open Points for electrical distribution network operation

Cao, Wanyu, Wu, Jianzhong ORCID: https://orcid.org/0000-0001-7928-3602, Jenkins, Nicholas ORCID: https://orcid.org/0000-0003-3082-6260, Wang, Chengshan and Green, Timothy 2016. Benefits analysis of Soft Open Points for electrical distribution network operation. Applied Energy 165 , pp. 36-47. 10.1016/j.apenergy.2015.12.022

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Abstract

Soft Open Points (SOPs) are power electronic devices installed in place of normally-open points in electrical power distribution networks. They are able to provide active power flow control, reactive power compensation and voltage regulation under normal network operating conditions, as well as fast fault isolation and supply restoration under abnormal conditions. A steady state analysis framework was developed to quantify the operational benefits of a distribution network with SOPs under normal network operating conditions. A generic power injection model was developed and used to determine the optimal SOP operation using an improved Powell’s Direct Set method. Physical limits and power losses of the SOP device (based on back to back voltage-source converters) were considered in the model. Distribution network reconfiguration algorithms, with and without SOPs, were developed and used to identify the benefits of using SOPs. Test results on a 33-bus distribution network compared the benefits of using SOPs, traditional network reconfiguration and the combination of both. The results showed that using only one SOP achieved a similar improvement in network operation compared to the case of using network reconfiguration with all branches equipped with remotely controlled switches. A combination of SOP control and network reconfiguration provided the optimal network operation.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Publisher:	Elsevier
ISSN:	0306-2619
Funders:	EPSRC
Date of First Compliant Deposit:	30 March 2016
Date of Acceptance:	8 December 2015
Last Modified:	04 May 2023 23:15
URI:	https://orca.cardiff.ac.uk/id/eprint/86316

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