Var stands for voltamps reactive and is the measuring unit for reactive power, which. Vvo function is designed to optimize the voltage and reactive power flow in. The banks also provide volt var control by switching in capacitor banks to compensate for var losses when large inductive loads occur, such as when air conditioners, furnaces, dryers, andor. Jackson explains that 4 ami includes advanced meters that will support greater customer energy usage. In this paper, the general term voltage and var control volt var control, is vvc used to include advanced applications like distribution conservation voltage reduction cvr and volt var optimization vvo.
Eaton s yukon volt var management software applications monitor realtime voltages, watts and vars from ltcs, regulators, capacitors, medium voltage sensors, and additional monitoring points such as customer meters. Volt var optimization with energy savings for distribution system using intelligent control abstract. Keeping the voltages within the limits for reduced power losses and. Dommel, life fellow, ieee abstractthe possibility of leveraging the data provided by smart meters to understand the load characteristics is studied in this paper. Many schemes are in common use for verifying cvr results. Concept of multi objective optimization the problem of optimizing a distribution system involves multi objectives i. Despite their ability to significantly improve power quality and lower line losses and reduce peak demand compared to traditional methods, vvo systems have not been widely deployed in the u. Optimal inverter var control in distribution systems with. Simulating such a system gives crucial information such as the switching of capacitors and optimal tap positions of voltage.
Volt var optimization vvoe within emergency voltage limits. A framework for voltvar optimization in distribution systems hamed ahmadi, student member, ieee, jose r. Minimizing cvar and var for a portfolio of derivatives s. The combination of edge voltage optimization and volt var optimization increases savings as well as improves reliability. The task force meeting was very well attended, with over 35 participants representing electric utilities, consultants, academia, government and industry present for the meeting. The loads are modeled as voltagedependent elements to increase the accuracy of volt var optimization. Omaha, nb implementing voltvar optimization october 12. Cyme power engineering software voltvar optimization. Zenios working paper 1603 the wharton financial institutions center the wharton school, university of pennsylvania, pa. Voltvar optimization summary voltvar optimization vvo is a tool to dynamically adjust the distribution system to reduce system losses and minimize demand. Would you freak out if i told you that the power we use and the power we see in our day to day lives is only a particular component of power. Voltvar management solutions for smart grid distribution.
Volt var efficiency today, volt var optimization is one of the key investment areas of the smart grid. Ivvo is defined as integrated voltvar optimization electricity somewhat frequently. Task force on volt var control optimization vvtf meeting. Volt var optimization vvo and conservation voltage reduction cvr provide an opportunity to improve the power system performance in terms of efficiency. He provides customer and industry linkage to beckwith electrics solutions, as well as contributing expertise for application engineering, training and product development. This research forms the inception for a series of studies aimed at incorporating volt var optimization within. Application of narrow band power line communication in volt. Galapagos san cristobal wind project voltvar optimization report. Ivvo is defined as integrated voltvar optimization electricity. Voltvar optimization vvo via power factor correction was preferred strongly to cvr via active voltage regulation. Due to voltagedependence of loads, both real and reactive power will be affected by variation in voltage. D var vvo optimizes power electric grids at the distribution level, providing the essential flexibility and responsiveness needed as electric grids evolve toward a distributed generation dg architecture. Conservation and optimization via volt var control tuesday, october 28, 2014 8.
The introduction of the smart grid concept and advanced metering infrastructure ami technologies in the power systems area has attracted new attention to make distribution systems efficient and save more energy. What is voltvar optimization and why is it so important. Cyme volt var optimization module brochure pdf 454 kb this brochure describes eatons cyme volt var optimization module and how it helps find the optimal way to operate distribution network so that the current and future demand can be met through. Voltvar optimization vvo in utility distribution systems 1. Java project tutorial make login and register form step by step using netbeans and mysql database duration. System optimization voltvar optimization optimal power. The loads are modeled as voltagedependent elements to increase the accuracy of voltvar optimization.
Regulation and optimization october 23, 2014 denver, co 2 overview who should attend learning outcomes coordinated control of voltage and reactive power through the use of capacitor banks and regulators is one way that. I will give you an answer that cannot be found in a textbook. A comprehensive methodology for voltvar optimization in. Bilevel voltvar optimization to coordinate smart inverters. Volt var control optimization bob uluski quanta technology. Abstract we show that robust optimization of the var and cvar risk measures with. Volt var optimization vvo is the tool which improves the efficiency of the distribution system by coordinating the voltage and reactive power. This is a use case document that describes how to provide voltvar optimization through capacitor bank control when there is a kvar limit excursion on an analog measurement. What is voltvar optimization and why is it so important for. Jan 28, 2020 voltvar optimization capacitor banks control the level of voltage supplied by minimizing voltage drops and absorbing energy from a line spike.
Integrated voltvar control ivvc coordinated control of substation load tap changers, feeder voltage regulators and capacitor banks ensure var and voltage profiles to optimize these benefits. Simulating such a system gives crucial information such as. Cyme power engineering software and solutions voltvar. Pdf the application of voltvar optimisation on south. Voltvar optimization with energy savings for distribution. The difference is found in what we know about the status of the power lines.
Increases available savings by flattening the customer voltage profile along the circuit, edge creates additional headroom for voltage optimization. Nov 07, 2011 what is voltvar optimization and why is it so important for a smart grid. Voltage and var control applications including smart inverters, energy storage, and secondary side solutions. Volt var optimization vvo in utility distribution systems 1. Move from local control to model based voltvar optimization. This paper seeks to explore the problem of energy savings and peak demand.
A wide panorama of technology already exists to achieve that objective. A framework for voltvar optimization in distribution systems. Equivalence of robust var and cvar optimization somayyeh lot stavros a. Optimizes power factor at the customer level unlike other volt var approaches, edge optimizes power factor using customer. Smart inverters storage power electronic devices potential benefits. May 05, 2016 this is the second of two education modules on volt var technologies. The results obtained on ieee 30bus system showed that the.
How is integrated voltvar optimization electricity abbreviated. Volt var control and optimization concepts and issues and issues. The vvo problem, in the classical sense, is the optimal operation of the capacitor banks and under load tap changers ultcs. Abstractconservation voltage reduction cvr uses volt. Volt var optimization vvo is a process of optimally managing voltage levels and reactive power to achieve more efficient gird operation by reducing system losses, peak demand or energy consumption or a combination of the three. Voltage and var optimization vvo is the latest addition to those applications. Optimal inverter var control in distribution systems with high pv penetration masoud farivar y, russell neal, christopher clarke y, steven low ysouthern california edison, rosemead, ca, usa department of electrical engineering, caltech, ca, usa abstractthe intent of the study detailed in this paper is to. This conference will present the economic case for voltvar optimization. He provides customer and industry linkage to beckwith electrics solutions, as well as contributing expertise for application engineering, training and. Con edison, national grid, duke energy, and morristown utility systems will provide case studies of their vvo programs. The voltvar optimization vvo model is combined with distributed energy resources e. Saving energy on campus with volt var optimization technology.
Ivvo stands for integrated voltvar optimization electricity. Learn how to develop a voltvar optimization strategy to increase efficiency. Conservation and optimization via volt var control the smart grid experience. Application of narrow band power line communication in voltvar optimization by babak shahabi b. Etap offers several powerful analysis software modules for systems optimization including volt var optimization, optimal power flow, switching optimization, and more. Consequently, rather than minimizing active energy of the system, the focus of this article to. This research forms the inception for a series of studies aimed at incorporating volt var optimization within eskom distribution networks. Control strategies for cvr are presented, to cater for an integrated volt var solution for distribution networks. Simple paybacks for these projects were generally in the 0 2 year range. For smart grid distribution automation applications.
Optimize your distribution network through voltvar management. Minimizing cvar and var for a portfolio of derivatives. Galapagos san cristobal wind project voltvar optimization report prepared by the general secretariat may 2015. Voltage and var optimization vvo is a key smart grid ap plication. Provide voltvar optimization through capacitor bank control when there is a kvar limit excursion on an analog measurement. Yukon volt var management software applications installed at a number of utilities across north america presently control more than 20,000 capacitor banks. Lic a center for applied mathematics, cornell university, ithaca, ny 14851, usa b department of computer science and center for applied mathematics, cornell university, ithaca. Pdf volt var optimization vvo and conservation voltage reduction cvr provide an opportunity to improve the power system. These programs are intended to reduce enduse customer energy consumption and peak demand while also reducing utility distribution system energy losses. Index termsdistribution system reconfiguration dsr, dis tributed storage systems dss, smart grids sg, voltvar.
Vvo refers to the optimization of reactive power and voltage regulation resources on the. Integrated voltvar optimization with distributed energy. Wayne hartmann is vp, protection and smart grid solutions for beckwith electric. Industry experience with voltvar optimization shows 1. Var control vvc is a fundamental operating requirement of all electric distribution systems the prime purpose of vvc is to maintain acceptable voltage at all points. Volt var optimization vvo the dms600 volt var control system provides full scada. Cyme power engineering software and solutions optimize your distribution network through volt var management the volt var optimization vvo analysis module simulates a volt var management application. Volt var optimization technology works as expected testing validates that 24% energy and demand reduction is achievable. Var optimization vvo methods to reduce customer power demand by controlling. The cyme voltvar optimization module is a powerful tool that helps find the optimal way to operate distribution network such that the need of todays and tomorrows demand can be met through energy efficiency improvement and demand reduction.
The objective of the vvo techniques is to optimize some metric of the system performance such as active power loss or voltage. Furthermore, an assessment of cvr potential within eskom distribution networks is presented. Volt var optimization with energy savings for distribution system using intelligent control. The voltvar optimization vvo analysis module simulates a volt. Sensitivity analysis of voltvar optimization to data changes in.
Volt var optimization improves grid efficiency introduction traditional voltage var management1 technologies have been used by the power industry for over 30 years to reduce electric line losses and increase grid efficiency. This paper addresses the integrated volt var control for distribution network operation via multiobjective optimization. Volt var optimization are one of the fundamental power system functions for maintaining voltage profiles and reducing losses, yet being challenged by complex twoway power flow with ders e. Provide volt var optimization through capacitor bank control when there is a kvar limit. Sensitivity analysis of voltvar optimization to data. With the proper implementation of technology and a concerted effort we can reduce electric energy losses and the demands made on electric distribution systems.
In light of maintaining voltage quality during the volt var optimization process, the analytical sensitivity results can potentially be used for identification of the most influential data to volt var optimization through listing different sensitivity values and robust distribution system operation to cyber data attack into volt var optimization. Discover why excessive volt ampere reactive var power on a distribution network is inefficient and how the problem can be solved. Utility investment in communications and smart grid investment links all facets from endcustomer to generation, transmission. Exploration of how smart inverters can enhance vvo 3. Integrated voltvar regulationoptimization before diving into integrated voltvar optimization, it is important to understand the concept of var. The patented adaptivolt software has been installed at major electric utilities and industrial facilities in the u. Capacitor switch states, loads, voltages, and circuit var loss performance statistics are conveniently at their fingertips. Provide voltvar optimization through capacitor bank control when there is a kvar limit. Now, with smart grid technology, we can use a more intelligent approach and put into place voltvar optimization, or vvo for short. It not only controls reactive power flow with drives losses on distribution feeders, but it also reduces peak demand which is critical for utilities. Reactive power management aims to improve the power factor to reduce the active power losses in the circuit. Yukon volt var management software is one of eaton s grid. Cvr schemes were primarily scada actuated but were initiated by human operators.
Var stands for volt amps reactive and is the measuring unit for reactive power, which is created by energizing transformers and powering motors, pumps, air conditioners, and other similar devices 2. Integrated voltvar regulationoptimization americans for a. Amsc launches volt var optimization for distribution. Engineers and crews can view status of substation, feeders, capacitors and voltage devices, set control constraints, and operate switches manually. Powerstream dynamic voltvar optimization opus one solutions. Voltage optimization vo is a combination of conservation voltage reduction cvr and volt var optimization vvo. Volt var optimization automate your switching processes with a twoway network capacitor banks control the level of voltage supplied by minimizing voltage drops and absorbing energy from. The module simulates a volt var management application. Introduction voltage regulation in distribution systems means maintaining acceptable voltages at all customer load points within ansi limits 0. Figure 3 shows a smart optimization framework proposed by singh s et al. Voltvar optimization improves the efficiency of the. Eaton s cyme volt var optimization module is a powerful tool that helps find the optimal way to operate the distribution network so that current and future demand can be met through energy efficiency improvement and demand reduction. Integrated voltvar regulationoptimization before diving into integrated volt var optimization, it is important to understand the concept of var.
Var stands for voltamps reactive and is the measuring unit for reactive power, which is created by energizing transformers and powering motors, pumps, air conditioners, and other similar devices 2. Volt var optimization includes conservative voltage reduction cvr function that is used to calculate and maintain acceptable voltage e. Session moderators jared green, epri joe paladino, doe. Before diving into integrated voltvar optimization, it is important to understand the concept of. Yukon voltvar management software energy efficiency eaton.