Results 41 to 50 of about 7,136,886 (221)

PRINCIPLES OF IMPLEMENTATION OF BLOCKING OF CURRENT PROTECTION OF ELECTRICAL POWER UNITS WITH TRANSFORMERS

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2017
Principles of implementation of current protection of elements of electric power systems with power transformers are considered. In some cases, in facilities with power transformers there could be an inrush of a magnetizing current that can cause a false
F. A. Romaniuk, A. G. Shapozhnikova
doaj   +1 more source

Three-Phase Transformer Inrush Current Reduction Strategy Based on Prefluxing and Controlled Switching

IEEE Access, 2021
Inrush current with high amplitude is generated when the transformer is energized. On the one hand, it will have a negative impact on the safety of the transformer itself, and even cause the relay protection to malfunction.
Yuanlin Pan, Xianggen Yin, Zhe Zhang, Binyan Liu, Maolin Wang, Xin Yin   +5 more
doaj   +1 more source

On-line detection of spherical sensor for inrush current detection [PDF]

, 2016
With the exploration and demand for the field of marine, underwater vehicles are used in deep water widely, however, there is a lack of research about underwater vehicles which are applied in shallow wary water.
Tianlun Li, Xiaocheng Wu, Zhijie Tang, Xinnan Leng   +3 more
core   +1 more source

A Preventive Static Security Control Strategy for Distribution Networks Based on Phase Shifting Transformer Loop‐Closing Devices

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
As the share of renewable energy in the energy mix continues to increase, the penetration of distributed renewable generation in distribution networks is also rising steadily. Loop‐closing operation provides an effective means to enhance renewable energy accommodation across different grid partitions.
Ningyu Zhang, Yuqiao Jia, Xun Huang, Yuxuan Huang, Xin Zhao, Shan Gao, Jinyang Li   +6 more
wiley   +1 more source

Study on the Time–Frequency Characteristics of Excitation Inrush Current and Its Induced Converter Transformer Vibration

Applied Sciences
An inrush current will be generated inside a converter transformer during no-load switching on or off. The inrush current will cause severe vibration of the winding and other components of the converter transformer.
Jinzhuang Lv, Zhanlong Zhang, Jun Deng, Zhicheng Pan, Heng Wu, Haibin Zhou, Wenhao He, Yu Yang   +7 more
doaj   +1 more source

Improved Capacitor Voltage Feedforward for Three-Phase LCL-Type Grid-Connected Converter to Suppress Start-Up Inrush Current

Energies, 2017
Three-phase active damping LCL-type grid-connected converters are usually used in distributed power generation systems. However, serious inrush current will be aroused when the grid-connected converter starts, especially in rectifier mode, if no ...
Shiying Zhou, Xudong Zou, Donghai Zhu, Li Tong, Yong Kang   +4 more
doaj   +1 more source

The Impact of Various Contact Structures on the Microscopic Surface Condition of Vacuum Interrupters During Capacitive Switching

High Voltage, EarlyView.
ABSTRACT The double‐break vacuum circuit breakers (VCBs) that utilize series break technology effectively increase the switching capability for capacitive currents, elevate the withstand voltage level, and reduce the likelihood of restrike, all without compromising the breaking capacity for short‐circuit currents.
Yun Geng, Xiaofei Yao, Pu Chen, Rong Jia, Hannan Shan, Yingsan Geng, Zhiyuan Liu   +6 more
wiley   +1 more source

Varying the energisation condition to mitigate sympathetic inrush current [PDF]

, 2023
Transformers are generally easy to access and can contribute significantly to entire power system. When a transformer is turned on for the first time, it produces a magnetising inrush current which acts as a starting current.
Zali, Samila Mat, Samila Mat Zali, Hana Abdull Halim, Halim, Hana Abdull, Nadhirah, Nurul Fatin, Nurhakimah Mohd Mukhtar, Nurul Fatin Nadhirah, Mukhtar, Nurhakimah Mohd   +7 more
core   +1 more source

The Analogia Entis for Reformed Theology: Retrieving Calvin's Implicit Metaphysics

Modern Theology, EarlyView.
Abstract The famous controversy between Emil Brunner and Karl Barth which led to Barth's ‘No!’ was driven by disagreements over how to read John Calvin: Barth and Brunner never agreed on whether Calvin had a doctrine of the analogy of being. This article rekindles the debate.
Silvianne Aspray
wiley   +1 more source

Mechanisms of Roadway Instability and Coupled Control Technology for Working Face Passing Through Fault Zones

Energy Science &Engineering, Volume 14, Issue 9, Page 4470-4485, September 2026.
This study mainly explores the instability characteristics of roadways near faults in the working face. Taking the 51104 transportation roadway of the 51104 working face in Shengxin Coal Mine as the main research object, through theoretical analysis, borehole inspection, numerical simulation and on‐site mine pressure observation, the instability ...
Shuaifeng Yin, Yitao Yan, En Wang, Xubo Zhao, Kanglei Han   +4 more
wiley   +1 more source