Results 1 to 10 of about 511,252 (164)
Heat-pump performance: voltage dip/sag, under-voltage and over-voltage
The Journal of Engineering, 2014 Reverse cycle air-source heat-pumps are an increasingly significant load in New Zealand and in many other countries. This has raised concern over the impact wide-spread use of heat-pumps may have on the grid. The characteristics of the loads connected to
William J.B. Heffernan +2 more
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Simulation and research on over-voltage suppression for high voltage transmission line
The Journal of Engineering, 2019 For different types of fault in transmission line, the generation mechanism of tripping and closing over-voltage is analysed. To built the double power supply system of high-voltage transmission line simulation model by PSCAD/EMTDC, finally, for the ...
Qi Yao, Chuan Su, Yi Ji
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Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2009 One of the most efficient means of over-voltage reduction in arcing ground short-circuits is an application of a nonlinear over-voltage limiter. It is necessary to take into account dynamic properties of the nonlinear over-voltage limiter in order to ...
A. N. Bokhan +2 more
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Energies, 2023 This article addresses the problem of the contact voltage increase caused by the low-frequency oscillation of the train-grid system in the phase-separation process of EMUs.
Jixing Sun +6 more
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Energies, 2022 High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which ...
Jixing Sun +5 more
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Over Voltage Transient Protection Network Design [PDF]
Engineering and Technology Journal, 2009 Transient over-voltage caused by lighting, switching large inductive loads,couples on to data communication or instrumentation signal lines and introduce series fault alarm conditions and damage instrumentation electronics.
Miqdad T. Younis, Nidhal Y. Nasser
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Battery charger load-following controller for over-voltage and under-voltage conditions
Frontiers in Energy Research, 2023 Battery charging systems are integral to the efficient operation and economic benefit of various applications, from electric vehicles to renewable energy storage. However, maintaining battery charging according to specifications during voltage variations,
Arqum Shahid +5 more
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Energies, 2021 Knowledge of lightning impulse (LI) voltage distribution over transformer windings during the design stage of the transformer is very important. Specific design differences in inductive voltage transformers make the transient analysis approach different ...
Bojan Trkulja +3 more
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Reliability of semiconductor and gas-filled diodes for over-voltage protection exposed to ionizing radiation [PDF]
Nuclear Technology and Radiation Protection, 2009 The wide-spread use of semiconductor and gas-filled diodes for non-linear over-voltage protection results in a variety of possible working conditions.
Stanković Koviljka +2 more
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Improved feed forward power coordinate control strategy for unified power flow controller
Dianzi Jishu Yingyong, 2019 Unified power flow controller(UPFC) is the most advance flexible ac transmission system(FACTS). Active/reactive power balance for UPFC is analyzed in this paper when it is working in power flow control mode, and an improved real time power coordinate ...
Xu Yunfei +4 more
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