Energy savings in distribution network with smart grid-enabled CVR and distributed generation

When conservation of voltage is applied aiming to the reduction in energy consumptions by lowering the voltage in such an effective and controlled manner so that it does not violate ANSI Standard C84 voltage limits known as Conservation of Voltage Reduction (CVR). However enabling of CVR with traditional methods is limited with voltage reduction range and without taking account of customer end voltage. This paper proposes a smart grid enabled CVR operation which considers the customer end voltage through advanced metering infrastructure (AMI) and controls the volt-var control (VVC) device settings of distribution feeder with the advance distribution management system (ADMS) and VVC server. An additional reactive power support has been injected through DGs during the deeper level of voltage reduction to maintain the feeder voltage profile within limits. The Effect of penetration of distributed generations during CVR operation is also being incorporated. IEEE 13 node test feeder of radial distribution network has been considered for analysis of CVR effect. The test system is modeled and simulated in Open distribution system simulator (OpenDSS) environment. From simulation results, it is observed that significant energy consumptions and peak load demand can be reduced with combined operation of smart grid enabled CVR and distributed generations with proper feeder voltage profile.