A Novel Faulty Phase Selection Method for Single-Phase-to-Ground Fault in Distribution System Based on Transient Current Similarity Measurement

In modern electrical power distribution systems, the effective operation of inverter-based arc suppression devices relies on the accuracy of faulty phase selection. In the traditional methods of faulty phase selection for single-phase-to-ground faults (SPGs), power frequency-based amplitude and phase characteristics are used to identify the faulty phase. In the field, when a high-resistance SPG occurs in the system, traditional methods are difficult for accurately identifying the faulty phase because of the weak fault components and complicated process. A novel realizable and effective method of faulty phase selection based on transient current similarity measurements is presented when SPGs occur in resonantly grounded distribution systems in this paper. An optimized Hausdorff distance matrix (MOHD) is proposed and constructed by the transient currents of three phases’ similarity measurements within a certain time window of our method. This MOHD is used to select the sampling time window adaptively, which allows the proposed method to be applied to any scale of distribution systems. Firstly, when a SPG occurs, the expressions for the transient phase current mutation in the faulty and sound phases are analyzed. Then, the sampling process is segmented into several selection units (SUs) to form the MOHD-based faulty phase selection method. Additionally, the Hausdorff distance algorithm (HD) is used to calculate the waveform similarities of the transient phase current mutation among the three phases to form the HD-based faulty phase selection method. Finally, a practical resonant grounded distribution system is modeled in PSCAD/EMTDC, and the effectiveness and performance of the proposed method is compared and verified under different fault resistances, fault inception angles, system topologies, sampling time windows and rates of data missing.

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Real-Time Burst Detection in District Metering Areas in Water Distribution System Based on Patterns of Water Demand with Supervised Learning

Water ◽

10.3390/w10121765 ◽

2018 ◽

Vol 10 (12) ◽

pp. 1765 ◽

Cited By ~ 7

Author(s):

Pingjie Huang ◽

Naifu Zhu ◽

Dibo Hou ◽

Jinyu Chen ◽

Yao Xiao ◽

...

Keyword(s):

Supervised Learning ◽

Water Demand ◽

Distribution System ◽

Distribution Systems ◽

Water Distribution ◽

Time Window ◽

Learning Algorithm ◽

Burst Detection ◽

Pipe Burst ◽

Dynamic Time

This paper proposes a new method to detect bursts in District Metering Areas (DMAs) in water distribution systems. The methodology is divided into three steps. Firstly, Dynamic Time Warping was applied to study the similarity of daily water demand, extract different patterns of water demand, and remove abnormal patterns. In the second stage, according to different water demand patterns, a supervised learning algorithm was adopted for burst detection, which established a leakage identification model for each period of time, respectively, using a sliding time window. Finally, the detection process was performed by calculating the abnormal probability of flow during a certain period by the model and identifying whether a burst occurred according to the set threshold. The method was validated on a case study involving a DMA with engineered pipe-burst events. The results obtained demonstrate that the proposed method can effectively detect bursts, with a low false-alarm rate and high accuracy.

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A New Phase Selection Method for Single-Phase Grounding Faults in Distribution Networks with Full Compensation Arc Suppression Technology

2018 China International Conference on Electricity Distribution (CICED) ◽

10.1109/ciced.2018.8592121 ◽

2018 ◽

Author(s):

Jiaqi Wang ◽

Jinrui Tang ◽

Hui Hou ◽

Bowen Liu ◽

Chen Yang

Keyword(s):

Single Phase ◽

Distribution Networks ◽

Selection Method ◽

Phase Selection ◽

Full Compensation ◽

New Phase

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Shunt Petersen-Coil with Resistor for Single Phase Fault Detection in Resonant Grounded Power Distribution Systems

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.860-863.2007 ◽

2013 ◽

Vol 860-863 ◽

pp. 2007-2012 ◽

Cited By ~ 1

Author(s):

Xiao Meng ◽

Neng Ling Tai ◽

Yan Hu ◽

Xia Yang

Keyword(s):

Power Distribution ◽

Distribution System ◽

Distribution Systems ◽

Single Phase ◽

Detection Sensitivity ◽

Power Distribution Systems ◽

Power Distribution System ◽

Multi Level ◽

The Difference ◽

Petersen Coil

The failure current in resonant grounder power distribution system is small, so it is difficult to detect the fault feeder. This passage presents the equivalent circuit of resonant grounded system, and discusses the difference of electrical characteristics between faulty feeder and sound feeders by using shunt resistors. To reduce the influence of shunt resistors on the system and improve the detection sensitivity, it presents the method of shunting multi-level resistors, and it proves the sensitivity and reliability of this method by EMTP simulation.

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Recognition of the Single-Phase Ground Fault in Power Distribution System

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.480-481.1581 ◽

2011 ◽

Vol 480-481 ◽

pp. 1581-1586

Author(s):

Jun Zhang

Keyword(s):

Power Distribution ◽

Distribution System ◽

Distribution Systems ◽

Single Phase ◽

Transient State ◽

Power Distribution Systems ◽

Power Distribution System ◽

Ground Fault ◽

Analysis Computer ◽

Novel Method

For power distribution systems, recognizing the single-phase ground fault is very difficult because there are several faults with similar features. This paper presents a novel method that can help to overcome this difficulty. The idea is to turns the original fault info into a whole system with transient state, steady state and transition state. Theoretical analysis, computer simulation and lab experiments verified the effectiveness of the proposed method.

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Fast phase selection method based on transient current for UHV transmission lines

The Journal of Engineering ◽

10.1049/joe.2018.0269 ◽

2018 ◽

Vol 2018 (15) ◽

pp. 938-943 ◽

Cited By ~ 1

Author(s):

Sibei Luo ◽

Houlei Gao ◽

Yuehua Wu ◽

Jiakai Huang ◽

Dong Wang

Keyword(s):

Transmission Lines ◽

Selection Method ◽

Transient Current ◽

Phase Selection ◽

Fast Phase ◽

Uhv Transmission Lines

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Equivalent Model of a Three Phase System of Photovoltaic Generation to Analyze Voltage Variations in a Radial Distribution System

Scientia et technica ◽

10.22517/23447214.23391 ◽

2020 ◽

Vol 25 (2) ◽

pp. 205-215

Author(s):

Juan Camilo Toro-Cadavid ◽

Carlos Andrés Ramos-Paja ◽

Andrés Julián Saavedra-Montes

Keyword(s):

Radial Distribution ◽

Distribution System ◽

Distribution Systems ◽

Single Phase ◽

Parameters Estimation ◽

Photovoltaic System ◽

Photovoltaic Generation ◽

Radial Distribution System ◽

Three Phase ◽

Photovoltaic Generators

In this paper, the modelling of a three-phase photovoltaic system, for analyzing voltage variation in a radial distribution system, is presented. The radial distribution system is represented by a benchmark which is widely used in the analysis of distribution systems with distributed generation, and electrical microgrids. The parameters estimation of this model is performed by selecting the aerial distribution of conductors and then calculating the sequence components. Moreover, a model of a three-phase photovoltaic generation system for analyzing voltage variations is proposed. The model represents an array of photovoltaic panels, a dc/dc converter with its control system, and a three-phase inverter. The software MATLAB/Simulink is chosen to simulate both the distribution and the photovoltaic systems. All the components of the three-phase photovoltaic system are parametrized with information of commercial equipment. To facilitate the implementation of the system model in the analysis program, reduced models of its components are selected. Finally, the proposed model of the three-phase photovoltaic system is validated by simulating single-phase faults along the feeder and changes of irradiance over the photovoltaic generators and observing the voltage behavior in one node of the distribution system. The results show that irradiance changes and single-phase faults affect the voltage behavior depending on the photovoltaic penetration level and the generators location.

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Online Method for Location of Single Phase to Ground Fault through Cement Pole in Distribution Network

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.494-495.1739 ◽

2014 ◽

Vol 494-495 ◽

pp. 1739-1742

Author(s):

Hong Yu Yang

Keyword(s):

Theoretical Analysis ◽

Distribution System ◽

Distribution Systems ◽

Fault Location ◽

Single Phase ◽

Distribution Network ◽

Voltage Gradient ◽

Simulation Experiments ◽

Location Method ◽

Ground Fault

In China,most of distribution system is neutral noneffectively grounded. And the single-phase fault often happens through cement pole. In this paper,firstly,the voltage of the fault phase and the current of cement pole are derived in 10kV neutral noneffectively grounded distribution systems when cement pole has single-phase ground fault.Secondly,the online fault location method is proposed based on voltage gradient of cement pole.Thirdly,the resistence characristic of cement pole is analyzed and the distance obtained from the gradient voltage of cement pole is given.Finally, the theoretical analysis and simulation experiments show that the method is feasible.

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A Fault Phase Selection Method Based on Arc Voltages for High-Voltage Line Protections in Electric Power Systems

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.676.218 ◽

2013 ◽

Vol 676 ◽

pp. 218-221

Author(s):

Xiao Hui Zeng ◽

Yong Hui Chen ◽

Gong Quan Tan

Keyword(s):

Power Systems ◽

Electric Power ◽

High Voltage ◽

Single Phase ◽

Electric Power Systems ◽

Selection Method ◽

Phase Selection ◽

Arc Voltage ◽

Sequence Components ◽

Simulation Results

A fault phase selection method is proposed based on arc voltage after analysis of inadequate of fault phase selector existed in the paper. A precise fault phase selection can be achieved by using arc voltages in conjunction with phase current differences and sequence components of currents. The method proposed can solve false tripping problems in transmission line protections when single phase to ground faults occur with great reliabilities. Simulation results show that the method can identify faulted phase or phases correctly and effectively.

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Performance Analysis of Transient Current Limiters in a Distribution System

Engineering, Technology & Applied Science Research ◽

10.48084/etasr.1595 ◽

2018 ◽

Vol 8 (2) ◽

pp. 2640-2645 ◽

Cited By ~ 1

Author(s):

A. K. Shrivastav ◽

P. K. Sadhu ◽

A. Ganguly

Keyword(s):

Distribution System ◽

Distribution Systems ◽

Nyquist Plot ◽

Transient Current ◽

Matlab Simulation ◽

Bode Plot ◽

Three Phase ◽

Pulse Converter ◽

Current Limiter ◽

The Stability

This paper deals with the performance evaluation of a three-phase transient current limiter in distribution systems. A simulation model based on mathematical model of a three-phase, transient current limiter has been developed. The problem is formulated to justify the stable and harmonic free twelve-pulse and six-pulse converter based transient current limiter. Firstly, conventional methods like Bode Plot, Nyquist Plot and Nichols Chart are used to investigate the stability of twelve-pulse and six-pulse converter based transient current limiter. Next, a comparative analysis using fast Fourier transform is used to check the system harmonics using MATLAB simulation. The proposed design is found to be more efficient in making the system stable and harmonic free.

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