PPT-Voltage

Control Brad Calhoun Consultant Sr Trainer Spring 2016 Introduction Voltage control in an electrical power system is important for proper operation of electrical power equipment to prevent damage such as overheating of generators and motors to reduce transmission losses and to maintain the ability of the system to withstand and prevent voltage collapse In general terms decreasing reactive power causes voltage to fall while increasing it causes voltage to rise A voltage collapse occurs when the system trys to serve much more load than the voltage can support. Stray voltage can be found in any electrical system and is strictly a power distribution issue improper grounding causes low voltage current to travel along a neutral wire An electrical wiring system is grounded in order to keep voltage potential di Chapter Outline. Rationale. Lower Bounds on Computational Energy. Subthreshold Logic. Moderate Inversion as a Trade-off. Revisiting Logic Gate Topologies. Summary. Rationale. Continued increase of computational density must be combined with decrease in . 3.0 Causes of Voltage Sags 3.1 Utility Systems 3.1.1 Operation of Reclosers and Circuit breakers If for any reason a sub-station circuit breaker or a recloser is tripped, then the line which it is Shaker. Family K+ Channel. Stephen B. Long, Ernest . B. Campbell, Roderick . MacKinnon. Presented by: Nathan Lin. March 3, 2011. What is a . Shaker. . Kv. 1.2?. Voltage dependent potassium ion channel. Fluorescent-Lamp Ballast UL935. Primary Voltage Rating of Ballast:. 477 series. 477 series. 477series . (500Vac/600Vac-rated). Littelfuse. designed solution for 600Vac Ballast . . 600Vac-rated . fuse (up to 5A inclusive). VOLTAGE UNBALANCE IN LOW VOLTAGE DISTRIBUTION NETWORKSPaulo Vin Testing. and . Performance Analysis. 报告人：. René Peter Paul . Smeets. . professor . at Eindhoven . University. 时间：. 11. 月. 26. 日 上午. 9:00-11:00. 地点. ：. 西. 主楼. What is Voltage Optimisation?. What do the Experts say?. “A 230V linear appliance used on a 240V. supply will take 4.3% more current and will. consume almost 9% more energy …”. and. “… only achieve 55% of its rated life. www.highvoltage.soton.ac.uk. Laboratory Overview. The Laboratory was constructed on its current site in 1991 with funding from STC Submarine Cable Systems. We undertake a range of Research, Testing and Consultancy work across a variety of HV Systems. Design team 3. Presentation content. Introduction. 3-Phase System Explanation. Common Causes of Imbalance. Motor operation basics. Effects:. Electrical Power Consumption Increase. Thermal Degradation of Isolation. “. Prof. . Dr.‐Ing. Hans‐Georg Herzog. (hg.herzog@tum.de). Prof. Dr.‐Ing. Ralph Kennel. (ralph.kennel@tum.de). Technische Universität München. Arcisstraße. 21. 80333 München. Germany. „. Zener. Diode Regulators. Series Transistor Regulators. Low Dropout (LDO) Regulators. Packaged Regulators. Headroom and Dropout Voltage. Headroom. The difference in voltage between the input voltage and the output voltage of the regulator.. System Voltage Control Generator Set Point Normal voltage operation Capacitor These are the primary sources for voltage control Maintain Reserves SVC Reactors In many cases, this is sufficient to ALERT SYSTEM. Introduction. . The aim of the project is to make a low voltage and high . voltage . indicator. .. This system will save costly electrical and electronic . appliances . from the adverse effects of very high and very .