Improved protection system for phase faults on marine vessels based on ratio between negative-sequence and positive-sequence of the fault current [PDF]
, 2018 This paper presents a new method to protect the radial feeders on marine vessels. The proposed protection method is effective against Phase-Phase (PP) faults and is based on evaluation of the ratio between the negative-sequence and positive-sequence of ...
Bak, Claus +6 more
core +2 more sources
Fault location scheme of HVDC converter based on fault loop analysis
International Journal of Electrical Power & Energy SystemsIn order to solve the problem that multiple faults in the converter area will trigger the valve short-circuit protection action, and the fault location cannot be directly located according to the protection action result, a novel converter fault location
Dalin Mu +5 more
doaj +1 more source
Разработка дифференциально-фазной релейной защиты на потенциале проводов линии [PDF]
, 2018 В работе рассматривается исследование и разработка новой дифференциально-фазной защиты на потенциале проводов линий. Одной из особенностей является выявление короткого замыкания с помощью фиксации времени с помощью высокочастотных-импульсов между ...
Корнев, Василий Александрович
core
EnergiesCommon overcurrent criteria used to detect phase-to-phase short circuits in medium-voltage (MV) networks in some cases do not bring the expected results.
Beata Zięba +2 more
doaj +1 more source
Релейная защита и автоматика подстанции ГВ-2 Риддерского металлургического комплекса [PDF]
, 2015 Объектом разработки является релейная защита и автоматика подстанции. Цель работы – проектирование релейной защиты и автоматики подстанции. В работе выбраны требуемые виды релейной защиты и автоматики, выполнены необходимые расчеты токов короткого ...
Сидельников, Николай Владимирович
core
Analysis of Characteristics Over Current Relay and Ground Fault Relay on Feeder Rayon Tabing
MATEC Web of Conferences, 2018 The reliability of power distribution of PT PLN (Persero) branch of Padang especially in Rayon Tabing most of the repeaters is still not optimal. This is due to an uncoordinated protection relay on each feeder.
Arzul +4 more
doaj +1 more source
Space Shuttle Lightning Protection [PDF]
, 1979 The technology for lightning protection of even the most advanced spacecraft is available and can be applied through cost-effective hardware designs and design-verification techniques.
Blount, R. L. +2 more
core +1 more source
Analysis and Research of High-power IGBT Short-circuit Energy
机车电传动, 2019 In view of the high-power IGBT short-circuit protection technology, the IGBT short-circuit reason and protective principle was introduced. The short circuit time of IGBT was verified to be closely related to its working voltage by short circuit test ...
Lu YANG, Lei WANG, Shourong LI
doaj
Short-Circuit Protection Method Based on a Gate Charge Characteristic
IEEJ Journal of Industry Applications, 2014 This paper describes a high-speed circuit to protect IGBTs against short-circuit faults. The reverse transfer capacitance depends on a collector-emitter voltage and it produces a significant effect on a switching behavior under short-circuit fault conditions as well as under normal conditions.
Takeshi Horiguchi +7 more
openaire +2 more sources
Structure for Improving Short-Circuit Capability and the Method for Protecting the IGBT Devices
Advances in Electrical and Computer Engineering, 2008 A short-circuit is a serious situation in a circuit. That is why the determination of the fault current during the operation of the IGBT requires suitable gestures in order to realise a better and reliable operation for the power converters.
TILMATINE, A., HALLOUCHE, A.
doaj +1 more source