INTEGRATED VOLT-VAR OPTIMIZATION WITH DISTRIBUTED ENERGY SOURCES TO MINIMIZE SUBSTATION ENERGY IN DISTRIBUTION SYSTEM

    Volt-VAr optimization (VVO) is used to reduce peak power demand, energy losses, energy consumption, etc. Conservation voltage reduction (CVR) is utilized for optimal control of voltages. This concept work on the fact that most distribution loads is a constant impedance type. Thus, by reducing the system voltage to its minimum permissible range, the energy or power consumption can be reduced.
    Volt-VAr optimization (VVO) is the tool which improves the efficiency of the distribution system by coordinating the voltage and reactive power. Due to voltage-dependence of loads, both real and reactive power will be affected by variation in voltage. Consequently, rather than minimizing active energy of the system, the focus of this article to reduce the daily apparent energy of the substation using VVO. In this, on load tap changers (OLTC), and voltage regulators (VRs) are used for voltage optimization, whereas capacitor banks (CBs) inject reactive power (VAr) into the system provided operational and system constraints satisfied. This design focuses on minimization of substation apparent energy (kVAh) by the optimal scheduling of OLTC, VRs, and CBs.  The simulations are performed on modified IEEE 69-bus radial distribution systems using Matlab software.

Reference Paper-1:Integrated Volt-VAr Optimization with Distributed Energy Sources to Minimize Substation Energy in Distribution System
Author’s Name: Saran Satsangi & Ganesh Balu Kumbhar
Source: Electric Power Components and Systems, Taylor & Francis Group, LLC
Year: 2019
Reference Paper-2: Volt/VAr Optimization with Energy Savings for Distribution System Using Intelligent Control
Author’s Name: Griet Devriese, Farshid Shariatzadeh, and Anurag K. Srivastava
Source: IEEE
Year: 2013

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