Wide-area fault location based on optimal deployment of the traveling wave recorders

Liang, Rui; Wang, Fei; Fu, Guoqing; Xue, Xue; Zhou, Rui

doi:10.1002/etep.2168

Cited by 8 publications

(19 citation statements)

References 20 publications

(63 reference statements)

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“…Note that some other methods to locate the fault are presented and used in the literatures. Some of these methods are as follows: installation of smart meters on feeders, installation of phasor measurement units in active distribution systems, impedance‐based fault location for overhead unbalanced distribution systems, application of traveling wave recorders, and dynamic state estimation‐based methods …”

Section: Description and Formulation Of The Problemmentioning

confidence: 99%

A new mixed-integer linear formulation for optimal placement of fault indicators in distribution systems

Derakhshandeh

Nikbakht

2018

Int Trans Electr Energ Syst

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Summary In distribution systems, fault indicators (FIs) are used for fast faulted line‐section location. Locations and the numbers of FIs affect the reliability indices of distribution companies and customers. This study presents a new linear method to find the optimum numbers and locations of FIs in distribution systems. Fault indicator placement of FIs is defined as an optimization problem whose aim is to improve the reliability indices with regard to the costs imposed on the system. The structure of the proposed formulation is mixed‐integer linear programming. The proposed approach finds the optimal locations for FIs in such a way that customers' interruption cost and investment costs for the installation of FIs are minimized. The proposed formulation can be solved by using commercial solvers in a computational effective manner and rapidly converges to the global optimum. To evaluate the effectiveness of the proposed mixed‐integer linear programming optimization formulation, several studies are presented and tested on bus number 4 of the reliability test system.

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Section: Description and Formulation Of The Problemmentioning

confidence: 99%

A new mixed-integer linear formulation for optimal placement of fault indicators in distribution systems

Derakhshandeh

Nikbakht

2018

Int Trans Electr Energ Syst

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“…The result of fault location each group of data is summed by weighted, and the final location result is obtained. So, the distance between the fault point f and the substation S i is described by the following equation:

x_{i} = \frac{\sum_{i} x_{ij}^{*} R_{i}}{\sum_{i} R_{i}}

…”

Section: Accurate Fault Locationmentioning

confidence: 99%

“…With the rapid development of traveling wave fault location technology, wide‐area traveling wave fault location is widely investigated . This makes use of traveling wave data from various substations across the monitored network and therefore has better reliability than the conventional double‐end method .…”

Section: Introductionmentioning

confidence: 99%

Study on wide-area traveling wave fault line selection and fault location algorithm

Liu

Cheng

Wang

et al. 2018

Int Trans Electr Energ Syst

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Summary Existing traveling wave fault location algorithm is still not general in the wide area network. In this paper, a novel wide‐area traveling wave fault location algorithm for regional power grid is proposed. The algorithm includes 2 aspects: the fault line selection and accurate fault location. In the stage of fault line selection, firstly, the fault distance is estimated based on the modulus velocity difference method. After that, the fault line selection is carried out by the traveling wave fault location of double‐ended method. Based on the selection results, the invalid data can be eliminated. In the stage of accurate fault location, wide‐area data are accurately used to improve the quality of fault location results by combined location method. The results show that the method requires less traveling wave fault location devices and has applicability to various fault conditions, and the accuracy of fault location is high.

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“…Benefiting from the reclosing devices, few actual ground-mode velocities can be obtained, which will modify the results. Using Equation (12), the quadratic function of this line is: Figure 12 compares the actual ground-mode velocity curve and the calculated velocity curve. It can be seen that the proposed fitting method has a great performance and the maximum error is less than 0.2%, which meets the demand of engineering application.…”

Section: The Quadratic Function Of Ground-mode Velocitymentioning

confidence: 99%

“…It was verified by PSCAD/EMTDC that the method had high accuracy and strong robustness. However, it needs a higher sampling frequency [10][11][12][13][14][15]. For long transmission lines which are of great importance to power companies, transient-state methods have been widely used for their reliability.…”

Section: Introductionmentioning

confidence: 99%

Asynchronous Fault Location in Transmission Lines Considering Accurate Variation of the Ground-Mode Traveling Wave Velocity

et al. 2017

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This paper proposes a grounding fault location method in transmission lines based on time difference of arrival (TDOA) of ground-mode and aerial-mode traveling waves (TWs). The frequency-dependent characteristics of transmission lines cause different frequencies to have different attenuations and phase lags of different frequency components in traveling waves, which leads to the change of TWs velocities with different propagation distances. Due to these different propagation paths, the wave velocity variations of ground-mode should be considered as a main variable while the velocity of aerial-mode can be seen as a constant factor. A quadratic function that can illustrate the tendency of variation of ground-mode wave velocity is proposed by considering the relation between the wave velocity and fault distance. The least squares method is used to solve the quadratic function of different lines. Combining the quadratic formula and the incident TWs of each mode detected at both terminals of the line, a novel fault location method is proposed. First, according to the maximum and minimum ground-mode velocities, a fault scope can be acquired. Then, more accurate fault scopes and ground-mode velocities can be obtained by iteration computation. Finally, an accurate fault position is acquired when the fault scope is sufficiently small. PSCAD/EMTDC software is used to conduct fault simulations in order to verify the feasibility and accuracy of the method.

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Wide-area fault location based on optimal deployment of the traveling wave recorders

Cited by 8 publications

References 20 publications

A new mixed-integer linear formulation for optimal placement of fault indicators in distribution systems

A new mixed-integer linear formulation for optimal placement of fault indicators in distribution systems

Study on wide-area traveling wave fault line selection and fault location algorithm

Asynchronous Fault Location in Transmission Lines Considering Accurate Variation of the Ground-Mode Traveling Wave Velocity

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