Hierarchical and distributed control concept for distribution network congestion management. Issue 3 (1st February 2017)

• Record Type: Journal Article
• Authors: Kulmala, Anna; Alonso, Monica; Repo, Sami; Amaris, Hortensia; Moreno, Angeles; Mehmedalic, Jasmin; Al‐Jassim, Zaid
• Is Part Of: IET generation, transmission & distribution. Volume 11:Issue 3(2017)
• Page Start: 665
• Page End: 675
• Publication Date: 2017-02-01
• Subjects: distributed control -- hierarchical systems -- power distribution control -- distributed power generation -- power generation control -- power system management -- power system interconnection; distributed control -- hierarchical control -- distribution network congestion management -- smart distribution systems -- distributed energy resources -- network control -- cost‐effective network interconnection -- distributed generation -- network asset utilisation -- voltage violations -- network overloading -- network state optimization -- distributed congestion management -- hierarchical congestion management -- large‐scale DG -- LV networks -- MV networks -- production forecasts -- network reconfiguration algorithm -- secondary substations -- primary substations -- tertiary control -- primary controllers -- secondary control; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2016.0500
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : Congestion management is one of the core enablers of smart distribution systems where distributed energy resources are utilised in network control to enable cost‐effective network interconnection of distributed generation (DG) and better utilisation of network assets. The primary aim of congestion management is to prevent voltage violations and network overloading. Congestion management algorithms can also be used to optimise the network state. This study proposes a hierarchical and distributed congestion management concept for future distribution networks having large‐scale DG and other controllable resources in MV and LV networks. The control concept aims at operating the network at minimum costs while retaining an acceptable network state. The hierarchy consists of three levels: primary controllers operate based on local measurements, secondary control optimises the set points of the primary controllers in real‐time and tertiary control utilises load and production forecasts as its inputs and realises network reconfiguration algorithm and connection to the market. Primary controllers are located at the connection point of the controllable resource, secondary controllers at primary and secondary substations and tertiary control at the control centre. Hence, the control is spatially distributed and operates in different time frames.