Results 261 to 270 of about 375,639 (295)

A new method for fault line selection based on correlation between zero-sequence voltage in bus and zero-sequence current in feeders

2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2015
It is difficult to select the fault line due to the weak current when the single-phase grounding fault occurs in the resonant grounding system. A new method based on correlation between zero-sequence voltage in bus and zero-sequence current in feeders is proposed in this paper.
Yunkun Xiang, Yun Jiang, Yuanzhi Ning, Fang Tao, Bohan Liu   +4 more
openaire   +1 more source

Zero-sequence current dynamics in parallel-connected voltage source converters

2009 IEEE Electric Ship Technologies Symposium, 2009
Multiple three-phase voltage source converters may be connected in parallel to supply an AC voltage bus or a load in excess of the rating of an individual power converter. Without a circulating path, a zero-sequence current generally does not exist in a single power converter; however, it typically exists in parallel-connected three-phase power ...
null Yu Zhang, null Zhenhua Jiang
openaire   +1 more source

Single phase to ground fault location based on phase of zero-sequence current

2013 IEEE International Conference on Information and Automation (ICIA), 2013
With the continuous development of society and the improvement of people's life, people are increasingly concerning about the safe operation of the power grid, and single phase to ground fault of distribution networks is one of the problems. Because more branch of distribution networks and complex structure, the traditional methods can't achieve ...
Jinjie Li, Yulin Qi, Qiaomei Gao, Shihao Sun   +3 more
openaire   +1 more source

Fault Section Identification Based on Per-unit Zero Sequence Current

12th IET International Conference on Developments in Power System Protection (DPSP 2014), 2014
Although single phase to ground fault location in non-solid grounded networks has been studied for many years and a lot of research has been done, yet adequate solution for direct fault location of radial distribution network hasn't been made, especially for the distribution network with the neutral point grounded via arc suppression coil.
null Xiangning Lin, null Zhengtian Li, null Jinwen Sun, null Rongjin Zheng, null Zhiqian Bo, null Zhongkang Wei, I. Kursan, null Jianfei Xu   +7 more
openaire   +1 more source

Zero-Sequence Current Suppression Method for Fault-Tolerant OW-PMSM Drive With Asymmetric Zero-Sequence Voltage Injection

IEEE Transactions on Industrial Electronics, 2023
Chong Zhang, Chun Gan, Kai Ni 0003, Zhiyue Yu, Yu Chen 0030, Haochen Shi, Ronghai Qu   +6 more
openaire   +1 more source

Analysis and mitigation of excessive zero-sequence harmonic currents in distribution systems

PES T&D 2012, 2012
The increased penetration of electronic loads in distribution systems results in more frequently occurring problems for the utilities due to triplen harmonics - a trend that has been confirmed in a recent utility survey conducted as part of DSTAR project 13–5. In this paper, we investigate an inexpensive mitigation option that has been recently applied
Jens Schoene, Reigh Walling, Bo Yang, Bernd Niemann, Vadim Zheglov, Don Guinn, Scott Peele, Joseph Grappe, Bob Zavadil, Lavelle Freeman   +9 more
openaire   +1 more source

Circulating zero-sequence current control of parallel three-phase inverters

IEE Proceedings - Electric Power Applications, 2006
A novel circulating zero-sequence current-control method for common DC-source parallel inverter systems is proposed and implemented in FPGA. The follower inverter can closely track the three-phase discontinuous PWM modulation waveforms of the master inverter and the circulating current caused by asynchronous modulation waveforms can be reduced.
openaire   +1 more source

Methods of Getting Zero Sequence Current in a Single-Phase-to-Ground Fault

Advanced Materials Research, 2012
After a single-phase-to ground fault, fault voltage and current information should be sampled accurately for automatic equipments to detect the fault line. And zero sequence current is the very key element to detect the fault line after an earth fault happens. The widely used methods of getting zero sequence current are in details described. The common
openaire   +1 more source

An Online Ice Melting Technology Based on Zero Sequence Current

2023
Li Dayi, Long Zeyang, Hou Yuning, Chen Zelin   +3 more
openaire   +1 more source

Location method of single line-to-ground faults in low-resistance grounded distribution networks based on ratio of zero-sequence admittance

International Journal of Electrical Power and Energy Systems, 2023
Houlei Gao, Tong Yuan
exaly