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access icon free Flexible distribution network: definition, configuration, operation, and pilot project

© The Institution of Engineering and Technology
Received 29/11/2017, Accepted 13/08/2018, Revised 20/07/2018, Published 22/08/2018

In this article, a new concept of flexible distribution network (FDN) is proposed for the power grid with increasing distributed energy resources (DERs) and power electronic devices. First, the authors define FDN as a flexible closed-loop operation smart distribution network with the capability of wide-area energy exchange. In FDNs, flexible networking devices are the key facilities, which upgrade traditional networking devices by soft open point (SOP). Second, several typical network configurations of FDN are presented, which facilitate smooth upgrades from traditional networks to FDNs. Third, the normal operation mode, N − 1 mode, and the related analysis methods of FDN are presented. Finally, the world's first three-terminal SOP-based FDN pilot project is introduced and analysed to demonstrate the advantages of FDN in controlling power flow and integrating DERs.

Inspec keywords: energy resources; power distribution control; power electronics; load flow control; energy management systems; closed loop systems; smart power grids; distributed power generation

Other keywords: DER; traditional networking devices; wide-area energy exchange; distributed energy resources; power electronic devices; flexible networking devices; N − 1 mode; related analysis method; typical network configurations; flexible closed-loop operation smart distribution network; three-terminal SOP-based FDN pilot project; soft open poiny; normal operation mode; power grid; power flow control

Subjects: Distribution networks; Power system management, operation and economics; Control of electric power systems; Power system control; Distributed power generation; Power convertors and power supplies to apparatus

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