Results 1 to 10 of about 6,202 (265)

Analysis of single phase ground fault characteristics of low resistance ground active distribution network

Journal of Physics: Conference Series, 2021
Abstract A large number of distributed generators access to low resistance grounding system may have great influence on the fault characteristics of single phase ground. In view of low resistance ground active distribution network, the connection mode of Inverter-interfaced Distributed Generators (IIDG) is discussed comprehensively based
Na Wu, Zihui Liu, Shuxian Fan, Longjing Dong, Zhengxian Yang, Chengxiang Zhou   +5 more
openaire   +1 more source

Research of Single-phase Grounding Fault Simulation for Small Current Grounding System

DEStech Transactions on Environment, Energy and Earth Sciences, 2017
Our country generally uses small current grounding system (the neutral point no direct grounding system). Due to the fault current is too small to identify. So the distribution network operators have been plagued by this kind of fault line selection accuracy. This research establishes simulink model to analyze the fault of single-phase grounding system
Wei-wei GE, Shi-wei SU, Xing-hua YUE, Mao-song ZHENG, Qiao-ling REN   +4 more
openaire   +2 more sources

Distribution of currents and voltages of the "resonant" frequencies along the overhead power lines of 6 - 35 kV level voltageinsingle-phase ground fault mode

Известия высших учебных заведений: Проблемы энергетики, 2017
Paper show methodic of determine of place of single-phase ground fault with intermittent arc on the overhead power line. The informative signs of single-phase ground fault place are determine by values of voltage of the «resonance» frequencies of zero ...
A. I. Fedotov, G. V. Vagapov, N. V. Chernova   +2 more
doaj   +1 more source

Estimation of the minimum level of higher harmonics in the single-phase-to-ground fault current in compensated 6–10 kV networks

Elektrotehnìka ta Elektroenergetika
Purpose Development of a model for a compensated 6–10 kV network and a methodology for selecting its element parameters based on estimating the minimum level of higher harmonics in the single-phase-to-ground fault current. Methodology. To estimate the
A. E. Shamrai, I.V. Isaiev
doaj   +1 more source

Research on Single-Phase to Ground Fault Simulation Base on a New Type Neutral Point Flexible Grounding Mode

IEEE Access, 2019
There are some problems existing in the traditional grounding mode of the distribution network. To solve them, this paper proposes a flexible grounding method for neutral point.
Han Zeng, Pinghao Yang, Hongbo Cheng, Jianbo Xin, Wenxuan Lin, Wenguang Hu, Mengyi Wan, Yinghan Li, Hua Wu   +8 more
doaj   +1 more source

The use of phase voltage modules to select the damaged phase in case of single-phase earth faults

Омский научный вестник, 2023
In case of short circuits, the selection of damaged phases always precedes the determination of the damage location. To select the damaged phase, filter selector of the damaged phase are widely used, using symmetrical components of phase currents.
V. A. Shabanov, A. V. Sorokin
doaj   +1 more source

Distribution Network Voltage Arc Suppression Method Based on Flexible Regulation of Neutral Point Potential of the New Grounding Transformer

Frontiers in Energy Research, 2022
Aiming at the problems that the existing arc suppression cabinet technology cannot adjust the zero sequence voltage flexibly and the control and hardware implementation of active arc suppression equipment based on power electronics are difficult, a new ...
Wu Lifang, Bai Hao, Zhou Ke, Yuan Zhiyong, Yu Xiaoyong, Lei Jinyong, Zou Yu, Zhang Yuan   +7 more
doaj   +1 more source

Pilot Protection of a Distribution Network with Distributed Generators Based on 5G and Dynamic Time Warping Considering Cosine Transform

Energies, 2023
The application of 5G-based communication for pilot protection in a distribution network with distributed generators is becoming increasingly widespread, but the existence of a 5G communication transmission data delay adversely affects the rapidity and ...
Deyang Wang, Zhi Yuan, Weiqing Wang, Kaihua Zhi   +3 more
doaj   +1 more source

An adaptive reclosing strategy for UHV AC transmission lines based on phase difference of single-end induced voltage

International Journal of Electrical Power & Energy Systems
In ultra-high voltage (UHV) AC transmission systems, single-phase to ground faults account for more than 80 % of all faults. If reclosing is performed blindly under permanent fault conditions after a single-phase to ground fault, the system may suffer ...
Yikai Wang, Chaozheng Xu, Jian Qiao, Guanqun Sun, Di Zhang, Yao Liu, Zhihui Dai, Zengping Wang, Xianggen Yin   +8 more
doaj   +1 more source

Hybrid protection algorithm for power system with renewable energy generation using Stockwell transform and Wigner distribution function

The Journal of Engineering, 2022
Rapid technological development in grid integration of renewable energy (RE) plants has increased the RE penetration level in power utility network. This dramatic change in power scenario challenges the protection and stability of grid.
Om Prakash Mahela, Mukesh Kumar Gupta, Atul Kulshrestha, Baseem Khan, Rajendra Mahla, Akhil Ranjan Garg, Aditya R. Gautam, Sanjeevikumar Padmanaban   +7 more
doaj   +1 more source