Yearly Estimationof Substation Energy SavingswithSmart Enabled CVRin Distribution NetworkandPhotovoltaicInverter

摘要

Load demands are increasing in distribution networks these days because of their wide use inresidential, commercial, and industrial sectors, and thus losses in distribution lines are rising. It is a matter of worry for Distribution Network Operators (DNO). This issue can be resolved by increasing integration of renewable energy sources in the distribution systems to satisfy the growing electricity needs. Besides, advanced energy-efficient technologies such as Conservation Voltage Reduction (CVR) are considered to reduce the substation demand by regulating the voltage in a lower voltage regulation range (120-114)V, keeping voltage of the customer devices in permissible voltage limits. To attain higher substation energy savings, smart PV inverter Volt-VAr control has been incorporated. Time series simulation has been performed in OpenDSS environment for yearly load demand.i.e., 8760 hours of customers. The impact of seasonal variation of PV system characteristics has been examined on IEEE 13 node three-phase unbalanced distribution network along with voltage-dependent load model. Significance of this work has been proved by a comparative analysis of various case studies to analyze the impact of CVR on a yearly basis in combination with a smart PV inverter.