Fault location based on single terminal travelling wave analysis in radial distribution network

Liang, Rui; Fu, Guoqing; Zhu, Xueqiong; Xue, Xue

doi:10.1016/j.ijepes.2014.10.026

Cited by 74 publications

(50 citation statements)

References 14 publications

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“…Coupling capacitor voltage transformers (CCVT) is a measuring transforming that is widely used in transmission line for voltage measurement and can be used for the extraction of transient signals. In reference [29], it is pointed out that CCVT may have several resonant models and the frequency response may present obvious According to [32][33][34], the performance of wavelet transform is great in capturing the transient wave-head. Thus, the Daubechies 6 (db6) wavelet is used to compose the transient wave-head into four levels.…”

Section: Fault Location Based On the Time Difference Of Modesmentioning

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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Section: Fault Location Based On the Time Difference Of Modesmentioning

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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“…In this case, the deployment scenarios are determined as follows:B M = [3,8,11,13,14,21,26,29,30] denotes that Bus 3,8,11,13,14,21,26,29, 30 must be installed with TWR; B 0 = { [5,7], [16,17], [10,[18][19][20]}, B 1 = { [1,2], [15,18,19]}. Notice that there is an identical number [18,19] which means set [10,[18][19][20] and [15,18,19] are of the same "impact" during deployment, so Bus 18 and 19 must be installed with TWR as well. Finally, to guarantee that every element of B M , B 0 and B 1 could be involved, there are 1 × 2 × 2 × 2 × 2 × 1 = 16 scenarios in total, which are listed in Table I. The single-line diagram of IEEE30-bus test system is depicted in the Figure 6.…”

Section: Case I: Ieee 30-bus Test Systemmentioning

confidence: 99%

“…In the last decades, power electronics devices have been increasingly incorporated on electrical power systems providing greater flexibility and controllability, which brought new concerns into fault-location problem [18]. A particular case of concern is about long transmission lines compensated with power electronic devices like the thyristor controlled series compensator (TCSC), the static synchronous series compensator (SSSC) and the static VAR compensator (SVC).…”

Section: Introductionmentioning

confidence: 99%

“…In the above cases, impedance-based fault-location method will be impacted greatly because of the changed line parameters [19,20]. While traveling-wave based method is independent of the fault impedance and is shown to be suitable for compensated line, because it is still feasible to detect the wave fronts despite of the harmonic frequencies generated by compensated devices [3,18].…”

Section: Introductionmentioning

confidence: 99%

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

Liang

Wang

et al. 2015

Int. Trans. Electr. Energ. Syst.

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With the development of wide-area measurement technology, it is possible to synchronously obtain the traveling waves from different measuring points in a complex power grid. Considering fault-generated traveling wave transmits along the shortest path in the power grid and timestamps of wave fronts can be acquired by phase-mode transformation and wavelets, this paper proposes an optimal deployment scheme of traveling wave recorders (TWR) in the power grid based on the extended double-end fault-location method. Then the fault-location methodology is presented. It is critical to guarantee that the double-end method is applied to the power grid and recognizes the specialized measuring combinations preciously and quickly, and the fault can be located consequently wherever it occurs. At last, fault-location accuracy is improved by the correction approach. All simulations are carried out in PSCAD/EMTDC, and the proposed procedure is applied to the IEEE 30& 57-bus test system to exam its validation. The results show that it can accurately locate a fault with 13 TWRs in IEEE 30-bus test system and 16 TWRs in IEEE 57-bus test system, and absolute error is less than 20 m.

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“…The third group of methods are based on traveling-wave phenomenon. They estimate the fault location by calculating the time distance between the received traveling waves [9]- [11]. These methods are also very accurate and fast.…”

Section: Introductionmentioning

confidence: 99%

Active fault location in distribution network using time-frequency reflectometry

Ghaderi

Mohammadpour

Ginn

2015

2015 IEEE Power and Energy Conference at Illinois (PECI)

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In this work a new single-ended method for fault location in distribution networks is proposed. The method is an active traveling wave fault location, which transmits a Gaussian chirp through the line and applies the cross time-frequency reflectometry in order to find the exact location of the fault with 150 meter tolerance. The method functions in the offline post fault condition, where the system is disconnected. The bandwidth of the proposed method is at least one order of magnitude smaller than its passive counterparts. Furthermore, not only is the method capable of locating the exact distance of the fault away from the relay location, but it also finds the exact line in radial configuration of distribution network. Another characteristics of this method is its immunity to series capacitive compensated transmission line, voltage level, fault phase, fault inception angle, and fault resistance. Another important property of the method is its ability in locating high impedance faults. The method capabilities are verified using PSCAD/EMTDC simulation based on phase-dependent and frequency-dependent models for distribution network lines. An error parameter is defined to compare the method efficiency for different fault types, fault locations, and system configurations.

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Fault location based on single terminal travelling wave analysis in radial distribution network

Cited by 74 publications

References 14 publications

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

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

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

Active fault location in distribution network using time-frequency reflectometry

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