A hybrid approach for fault location in power distributed networks: Impedance-based and machine learning technique

Tavoosi, Jafar; Shirkhani, Mohammadamin; Azizi, Amirreza; Din, Sami ud; Mohammadzadeh, Ardashir; Mobayen, Saleh

doi:10.1016/j.epsr.2022.108073

Cited by 32 publications

(20 citation statements)

References 28 publications

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“…The traditional double-ended traveling wave method is only applicable to pure overhead lines or pure cable lines with the same wave speed, and cannot be used in mixed lines with different wave speeds. For this reason, the literature [1][2][3], proposed the single-end traveling wave method for fault ranging, This method is simple in principle and requires less measurement information and is economical, but it is not applicable in active distribution networks with complex situations; proposed the use of the time difference between the line mode component and the zero mode component for ranging, which can cause large errors because the zero mode component is severely attenuated during line transmission and the zero mode wave speed is not easily accessible; the literature [4][5] proposed a hybrid line fault location algorithm based on the time midpoint method, which determines the time midpoint location by detecting the time when the fault occurs at the fault detection point, and then selects the search direction for one-by-one projection, which is more complicated to operate; Narges Rezaee Raveshd et al [6] proposed a zone detection method based on wavelet analysis, which achieves the fault zone by detecting the timefrequency characteristics of the reflected pulse detection, but the accuracy of wavelet analysis is easily affected by wavelet bases. In addition, this method has different time-frequency analysis effects of signals under different wavelet decomposition scales, and the choice of wavelet decomposition scale is also an important factor affecting the time-frequency analysis of reflected waves.…”

Section: Introductionmentioning

confidence: 99%

Fault Ranging Method for Overhead-Cable Hybrid Distribution Lines Based on CEEDMAN Energy Relative Entropy

Piao

Wang

Jia

et al. 2023

J. Phys.: Conf. Ser.

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According to the parameter characteristics of cable-overhead line and the folding and reflection process of traveling waves when the wave impedance is discontinuous, a traveling wave abrupt change extraction method based on the empirical mode decomposition of fully adaptive noise ensemble (CEEDMAN) energy relative entropy is proposed for the first time. Through the combination of CEEDMAN and energy relative entropy, the transient traveling wave signals are generated when reflection and refraction occur, and the energy value of traveling waves will change abruptly, and the reflected and refracted wave heads will be captured by the change of relative energy. Combined with the magnitude difference of zero sequence current, the fault area can be determined. Traveling waves have different wave speeds in overhead lines and cable lines, and fault ranging is performed by determining the corresponding propagation speed. Finally, simulation verifies that the method can accurately determine the fault zone with high ranging accuracy under the conditions of different fault locations, different transition resistances and different initial phase angles.

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Section: Introductionmentioning

confidence: 99%

Fault Ranging Method for Overhead-Cable Hybrid Distribution Lines Based on CEEDMAN Energy Relative Entropy

Piao

Wang

Jia

et al. 2023

J. Phys.: Conf. Ser.

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show abstract

“…The development of AI has led to the emergence of data-driven and AI-based methods for fault location in active distribution networks [17,17]. These methods use historical fault knowledge models that consider multiple factors and integrate data collected from supervisory control and data acquisition (SCADA) systems for more accurate results.…”

Section: Introductionmentioning

confidence: 99%

A PLC communication characteristics-based fault location method in MV meshed distribution networks

Tan

Tang²,

Zhang

et al. 2023

Preprint

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A power line carrier (PLC) communication characteristics-based method is proposed for single-phase-to-ground fault location in neutral isolated medium voltage (MV) meshed distribution networks in this paper. The carrier signals with a time-varying frequency and constant amplitude are processed by a set of PLC transmitters and receivers, whose placement is optimized by regarding the power network as an undirected graph. Two signal encoding and decoding algorithms for the PLC terminals are proposed to avoid using expensive timing systems between the terminals. The fault location technique is implemented by comparing the cosine similarity of amplitude attenuation (AA) and phase offset (PO) between the fault and a library. The node corresponding to the maximum cosine similarity of the characteristics between the present fault and the library is selected as the location of the current fault. Only one set of low-cost PLC communication terminals and the widely available power lines are needed in the fault location system, making this approach highly practical. Numerical simulations using MATLAB/Simulink have been performed to verify the technique’s feasibility. The results show that the method can accurately locate faults in neutral isolated MV meshed distribution networks. Besides, the presented approach achieves high accuracy in estimating transition resistance values.

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“…This method presents a new impedance matrix operation procedure for studying distribution systems in zones that span multiple subsystems. Tavoosi et al combined the impedance method and deep neural network to propose a new method for fault location [7]. The required time for fault location with the new method is less than 6 seconds, with an accuracy rate of 99%.…”

Section: Introductionmentioning

confidence: 99%

High-precision fiber-optic time synchronization and its application in power grid fault location

Yao¹,

Zhang²,

He³

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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Deploying a high-precision fiber-optic time synchronization network in the power grid can effectively support the safe operation of the grid. Firstly, a fault location model was constructed using the shortest path algorithm to address the complex loop network structure, and the impact of time synchronization on the accuracy of power grid fault location was analyzed. Then, a high-precision fiber-optic time synchronization composite signal transmission technology was proposed. This technology can deploy a high-precision fiber-optic time synchronization network in a complex power grid and ensure high-precision time synchronization of various monitoring nodes in the power grid by accurately transmitting time-frequency signal in the fiber through signal processing. Experimental results show that in time synchronization accuracy tests under normal temperature conditions, the time interval error of the fiber-optic time synchronization network is -10 ps and the time deviation is 35 ps, both of which far exceed the standard requirements. When the fiber works at changing temperatures, this technology can still transmit time-frequency signals with high accuracy in the fiber-optic time synchronization network, maintaining a high degree of time synchronization stability. Therefore, this technology can be applied to power grids in different working environments to improve the accuracy of power grid fault location.

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A hybrid approach for fault location in power distributed networks: Impedance-based and machine learning technique

Cited by 32 publications

References 28 publications

Fault Ranging Method for Overhead-Cable Hybrid Distribution Lines Based on CEEDMAN Energy Relative Entropy

Fault Ranging Method for Overhead-Cable Hybrid Distribution Lines Based on CEEDMAN Energy Relative Entropy

A PLC communication characteristics-based fault location method in MV meshed distribution networks

High-precision fiber-optic time synchronization and its application in power grid fault location

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