Results 91 to 100 of about 7,321,916 (189)

Comparative Study of Active Power Curtailment Methods of PVs for Preventing Overvoltage on Distribution Feeders

open access: yes, 2018
© 2018 IEEE. Overvoltage is one of the major issues on distribution grids with high penetration of photovoltaic (PV) generation. Overvoltage could be prevented through the control of active/reactive power of PVs.
Dahal, Sudarshan   +9 more
core   +1 more source

Optimum reactive power compensation methodology to minimize system overvoltage conditions

open access: yes, 2017
Sri Lankan Power system has experienced power frequency over voltages at steady state conditions predominantly at New Anuradhapura, New Chilaw and Chunnakam Grid Sub Stations. New Anuradhapura being connected to the lengthiest 220kV transmission lines
Perera, CKS
core   +1 more source

Generator step up transformer overvoltage protection in EPS power plants [PDF]

open access: yes, 2015
This paper presents the current state of the overvoltage protection of generator transformers in power plants of the Power Company of Serbia (EPS) and gives a critical overview of their overvoltage protection.
Mrvić Jovan   +2 more
core   +1 more source

Suppression of Generator-Side Transient Overvoltage in a DC 600 V Power Car System Based on AZSVPWM

open access: yesEnergies
Generator-side transient overvoltage may occur in DC 600 V AC–DC–AC railway power supply systems because switching-induced common-mode voltage generated by the front-end rectifier can propagate in reverse through cable distributed parameters, grounding ...
Fangdong Hou   +4 more
doaj   +1 more source

HV isolated power supply system for complex multiple electrical potential equipment in 500 kV hybrid DC breaker

open access: yesHigh Voltage, 2019
High-voltage direct current circuit breakers (HVDC CB) are one of the key technologies of multi-terminal DC systems and DC grids. Different from other equipment that use a large number of power electronic devices, the HVDC CB cannot obtain its power from
Xiangyu Zhang   +7 more
doaj   +1 more source

Mechanism Analysis and Simulation Study of Closing Overvoltage Fault in EMU Circuit Breaker

open access: yesChengshi guidao jiaotong yanjiu
Objective The overvoltage caused by circuit breaker closing will aggravate the insulation aging of high voltage equipment when EMU (electric multiple units)passes neutral section.
ZHANG Mingrui   +2 more
doaj   +1 more source

Robust Power System Frequency Control

open access: yes, 2009
Frequency control as a major function of automatic generation control is one of the important control problems in electric power system design and operation, and is becoming more significant today due to the increasing size, changing structure, emerging ...
Bevrani, Hassan
core  

Overvoltage protection in industrial power distribution

open access: yes, 2017
Sähköverkkojen ylijännitteet aiheuttavat laitevahinkoja ja keskeytyskustannuksia. Kustannuksien vähentämiseksi sähköverkon osia suojataan ylijännitesuojilla, joilla pyritään minimoimaan verkon komponentteihin kohdistuvat vahingot.
Paju, Jussi-Mikko
core   +1 more source

Resolving Sub-Cycle Overvoltage Issue in Solar and Type-4 Wind Farms Employing Low Voltage Ride Through

open access: yesIEEE Access
Over the past few years, transmission grid in the USA has seen numerous unintentional tripping events of large-scale inverter based resources (IBRs). These trippings were primarily caused by non-standard settings and certain fault ride through controls ...
Shah Mohazzem Hossain   +2 more
doaj   +1 more source

Electromagnetic processes and conditions of occurring resonance overvoltage in power transformer windings

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
The relevance of the study: At the present stage of CIS countries network development the problem of increase the operation reliability of transformers, which main part has been already out of date is of the first-priority. The problem is also up to date
Myroslav Sabat   +3 more
doaj   +2 more sources

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