Managing Risks from Reverse Flows under Distribution Network Outage Scenarios

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Title: Managing Risks from Reverse Flows under Distribution Network Outage Scenarios
Authors: Calvo, JL
Tindemans, S
Strbac, G
Item Type: Conference Paper
Abstract: Distribution networks have been traditionally conceived for transporting electricity downstream into low voltage demand nodes. However, the connection of significant amounts of distributed generation may reverse this condition, resulting in distribution nodes exporting power to other parts of the network. The current planning standard of the UK distribution networks (Engineering recommendation P2/6) requires making available sufficient capacity and redundancy for downstream flows under peak demand levels. However, it does not explicitly consider the implications of DG-mediated flow reversals that may cause flow constraints under circuit outage conditions. Relying on a Monte Carlo approach to sample wind and demand with adjustable correlations, this paper provides insights into the risks associated with an increase of variable distributed generation to the point where reverse flows may exceed the connection capacity under circuit outage conditions. Remote tripping schemes that disconnect distributed generators upon occurrence of a fault are explored to mitigate outage related costs. The latter strategy carries benefits but also novel risks in the form of a reliance on real-time communication and control, which may malfunction. It is shown that even unreliable corrective actions convey significant benefits to system reliability.
Issue Date: 22-Sep-2015
Date of Acceptance: 27-Jul-2015
URI: http://hdl.handle.net/10044/1/29787
Publisher: IET
Copyright Statement: This paper is a postprint of a paper submitted to and accepted for publication in IET International Conference on Resilience of Transmission and Distribution Networks and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
Conference Name: IET International Conference on Resilience of Transmission and Distribution Networks
Publication Status: Published
Start Date: 2015-09-22
Finish Date: 2015-09-24
Conference Place: Birmingham, UK
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering
Centre for Environmental Policy
Faculty of Natural Sciences



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