Benefits analysis of Soft Open Points for electrical distribution network operation

•An analysis framework was developed to quantify the operational benefits.•The framework considers both network reconfiguration and SOP control.•Benefits were analyzed through both quantitative and sensitivity analysis. Soft Open Points (SOPs) are power electronic devices installed in place of norma...

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Bibliographic Details
Published in:Applied energy Vol. 165; pp. 36 - 47
Main Authors: Cao, Wanyu, Wu, Jianzhong, Jenkins, Nick, Wang, Chengshan, Green, Timothy
Format: Journal Article
Language:English
Published: Elsevier Ltd 01.03.2016
Subjects:
Active control
Algorithms
Back-to-back converters
Distribution management
Distribution network
electric power
Electric power generation
electronic equipment
Network reconfiguration
Networks
Optimization
Reconfiguration
Soft Open Point
Switching theory
Network reconfiguration
Soft Open Point
Back-to-back converters
Distribution network
ISSN:0306-2619, 1872-9118
Online Access:Get full text
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Summary:•An analysis framework was developed to quantify the operational benefits.•The framework considers both network reconfiguration and SOP control.•Benefits were analyzed through both quantitative and sensitivity analysis. 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.
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ISSN:0306-2619
1872-9118
DOI:10.1016/j.apenergy.2015.12.022