Demand Reduction through Voltage Conservation (DRVC)

The DRVC project will investigate the ability to actively manage network voltage to unlock network capacity to connect further demand and to defer expensive netork reinforcement. The project will evaluate the Conservation Volatge Reduction (CVR) method, which takes advantage of the relationship between voltage and demand of some load types and offers a technique to reduce power flows by lowering voltages. DRVC is the name given to the integration of the CVR method in NIE Networks’ distribution network. 

The proposed DRVC project consists of actively reducing the voltage for customers, within statutory limits, to reduce demand. This is achieved by controlling the voltage at the primary substation (33kV/11kV). This reduction in voltage will reduce customers’ demand and therefore can reduce the maximum load on the network. The project will also assess the potential for NIE Networks to provide whole sytem benefits by using voltage control in response to a frequency event and tap stagger to manage reactive power flow.

Objectives

The key objectives of the DRVC project are:
  • Assess the relationship between voltage and demand in order to dynamically predict the demand reduction which could be achieved using DRVC
  • Assess the impact to customers and quantify any energy savings achieved
  • Reduce the maximum load at a primary substation to defer expensive traditional reinforcement and to faciliate further demand on the network
  • Quantify load types on the network
  • Assess the potential for NIE Networks to use voltage control in response to a frequency event and tap stagger to manage reactive power flow

Work Completed to Date

  • WSP awarded consultancy contract to support the project
  •  Technology Assessment phase commenced

Project Timeline

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