Results 211 to 220 of about 704 (260)
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Ground fault location identification for multiple drive high resistance grounding systems
2013 IEEE Energy Conversion Congress and Exposition, 2013One of the more difficult problems to solve in industrial plants is to locate and eliminate a ground fault in High Resistance Grounding (HRG) system. This is because ground fault conditions in these systems do not draw enough current to reliably trip the ground fault current detector in the drive. This paper studied the ground fault identification (GFI)
Lixiang Wei +3 more
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Digital fault location for high resistance grounded transmission lines
IEEE Transactions on Power Delivery, 1999This paper demonstrates that the presence of multiple load taps cannot be neglected for single-phase-to-ground fault location. A new method has been developed taking this into consideration, that can be applied to correct the location error due to intermediate power sources.
T. Funabashi +7 more
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Modeling and Simulation of Unstable High Resistance Grounding Fault based on RTDS
2020 IEEE Sustainable Power and Energy Conference (iSPEC), 2020RTDS is an effective simulation method for mining and processing the hidden criterion of protection device. Based on the case of invisible criterion blocking line protection under unstable high resistance grounding fault, this paper analyzes the test requirements, platform, equipment parameters and test items of modeling and simulation of unstable high
Hao Xu +5 more
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Phase-Ground Fault Current Analysis and Protection of a High-Resistance Grounded Power System
2019 IEEE Industry Applications Society Annual Meeting, 2019This article provides a closer look at a high resistance grounded (HRG) power system using symmetrical components. It addresses the industry confusion, “how system charging current direction reverses during phase-ground fault condition without reversal of system voltage that causes fault current flow.” It presents fault current phasor diagram that ...
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High-resistance grounding fault location in double-terminal DC distribution network
2021 IEEE International Conference on Artificial Intelligence and Computer Applications (ICAICA), 2021In order to locate faults in the double-terminal DC distribution network, the DC circuit breaker and bidirectional thyristor are used to obtain the boundary capacitor voltage recording, and the equivalent time constant is extracted through the capacitor voltage recording of different fault distances.
Gao Chao +4 more
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IEEJ Transactions on Electrical and Electronic Engineering
Active distribution networks with low‐resistance grounding face a significant challenge under the dual‐carbon strategy. When a single‐phase arcing high‐resistance grounding fault occurs, the resulting zero‐sequence current is weak and unstable. Consequently, existing protection schemes for such faults are rendered ineffective.
Fengxian Zhao +4 more
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Active distribution networks with low‐resistance grounding face a significant challenge under the dual‐carbon strategy. When a single‐phase arcing high‐resistance grounding fault occurs, the resulting zero‐sequence current is weak and unstable. Consequently, existing protection schemes for such faults are rendered ineffective.
Fengxian Zhao +4 more
openaire +1 more source
A Phase Selection Element for High Resistance Ground Faults of Transmission Line
2019 IEEE Power & Energy Society General Meeting (PESGM), 2019Zero sequence current differential protection can't select fault phase of transmission libe. Normal phase selection element is affected by load current and fault resistance, especially high resistance ground faults. A new phase selection method is proposed in this paper.
Xingguo Wang +3 more
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High-resistance grounding fault detection and location in DC railway system
11th IET International Conference on Developments in Power Systems Protection (DPSP 2012), 2012Locating high-resistance grounding faults poses a tough and challenging problem for the safety of DC railway systems. High-resistance grounding fault current isn't sufficient to trigger switches, which may expand the accident or turn into potential hazards.
C.Y. Dong +5 more
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IEEE Transactions on Industry Applications, 2001
With the advent of high-voltage (greater than 1 kV) utilization circuits on longwall mining equipment in the late 1980s, the Mine Safety and Health Administration (MSHA) initially required maximum ground-fault current limits of 3.75 A for 4160 V systems and 6.5 A for 2400 V systems.
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With the advent of high-voltage (greater than 1 kV) utilization circuits on longwall mining equipment in the late 1980s, the Mine Safety and Health Administration (MSHA) initially required maximum ground-fault current limits of 3.75 A for 4160 V systems and 6.5 A for 2400 V systems.
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IEEE Industry Applications Magazine, 2013
One of the more difficult problems to solve in industrial plants is how to identify and eliminate ground faults in a high-resistance ground (HRG) system. This is because ground-fault conditions in these systems do not draw enough current to reliably trigger fault current sensors in the drive.
null Lixiang Wei +3 more
openaire +1 more source
One of the more difficult problems to solve in industrial plants is how to identify and eliminate ground faults in a high-resistance ground (HRG) system. This is because ground-fault conditions in these systems do not draw enough current to reliably trigger fault current sensors in the drive.
null Lixiang Wei +3 more
openaire +1 more source