Implementation and Application of Practical Traveling-Wave-Based Directional Protection in UHV Transmission Lines

Xiang, Dong; Luo, Shuxin; Shi, Shan; Wang, Bin; Wang, Shiyong; Ren, Li; Xu, Fei

doi:10.1109/tpwrd.2015.2458933

Cited by 71 publications

(36 citation statements)

References 16 publications

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“…DWT decomposes the signal into different frequency bands to achieve a multiresolution analysis [28], as shown in Fig. 3.…”

Section: Wavelet Transform and Reconstruction Of Etwmentioning

confidence: 99%

“…Three-phase current signals in the frequency band of 3-10kHz can be used to form the startup element [27][28][29]. After being filtered by a band-pass filter of 3-10kHz, the three-phase current signals are compared with the start threshold, and if one of the current signals exceeds the start threshold, a start signal will be given out.…”

Section: A Startup Elementmentioning

confidence: 99%

“…The initial WTMMs of the current TWs in three modes can be used for fault phase selection [28], [31]. Take the phase-A-to-ground fault for example.…”

Section: Fault Phase Selectionmentioning

confidence: 99%

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A New Differential Protection of Transmission Line Based on Equivalent Travelling Wave

Tang

Xiang

Luo

et al. 2017

IEEE Trans. Power Delivery

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Differential protection is widely used for transmission lines, but its performance is affected by distributed capacitance current and current transformer (CT) saturation. Travelling wave (TW) differential protection is immune to these factors and can achieve ultra-high-speed operation. These characteristics are essential for long-distance extra/ultra-high-voltage (EHV/UHV) transmission line protection. However, the contradiction between sampling frequency and communication traffic makes it hard to ensure high sensitivity and high reliability at the same time. To solve this problem, a new TW differential protection based on equivalent travelling wave (ETW) is proposed in this paper. Wavelet transform is adopted to extract wavelet transform modulus maxima (WTMM) of TW, which are used to reconstruct ETW. Only several WTMMs need to be exchanged with the opposite terminal, so the amount of communication is largely reduced. Current energy ratio is defined and used for operation criterion to enhance the sensitivity during faults with large fault resistance and small fault inception angle. Detailed discussions on the selection of setting value ensure the reliability of the proposed protection scheme. Extensive simulations are conducted to test the performance of the protection. Simulation results verify that the protection can correctly discriminate between internal and external faults with high sensitivity and reliability.

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“…DWT decomposes the signal into different frequency bands to achieve a multiresolution analysis [28], as shown in Fig. 3.…”

Section: Wavelet Transform and Reconstruction Of Etwmentioning

confidence: 99%

Section: A Startup Elementmentioning

confidence: 99%

See 1 more Smart Citation

A New Differential Protection of Transmission Line Based on Equivalent Travelling Wave

Tang

Xiang

Luo

et al. 2017

IEEE Trans. Power Delivery

Self Cite

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“…Xinzhou Dong et al in [12] presented a principal of directional comparison based on travelling wave. Xinzhou Dong et al in [13] implemented and applied directional protection based travelling wave theory in UHV transmission line. An algorithm based on singular value and Euclidean norm for the fault detection and classification in transmission lines has been developed by Daniel Guillen et al in [14].…”

Section: Prefacementioning

confidence: 99%

Wavelet Transform Based Relaying Scheme for Double Circuit Transmission Line Protection

Soni¹,

Ali²,

Kapoor³

2017

IJERT

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-An application of wavelet transform based multi resolution analysis approach for double circuit transmission line protection from various faults is revealed in this paper, to intensify the result of various problems linked with distance security of double circuit transmission lines. The fault current signal is explored by choosing wavelet transform program of MATLAB and selecting 'db4' as mother wavelet to retrieve the fault current coefficients for fault detection in double circuit transmission line. Results of simulation work displays that the proposed relay based on wavelet transform can lift the work of orthodox protection schemes.Index Terms -Double circuit transmission lines, relaying schemes, wavelet transform, fault detection, location, and classification. I. PREFACEMulti terminal transmission lines are entirely standard owing to the growth of power transmission system both in convolution and expanse. Nevertheless, a double circuit transmission line constitutes unusual issues due to multiterminals. On this subject, Adel Aktaibi et al. in [1] proposed a hybrid technique which consists of WPT and dq-axis components for current differential protection of transmission lines. . In their work, they developed and implemented hybrid technique by localizing frequency sub-bands of dq-axis components of the differential currents using WPT for finding out the best signature of the internal faults. P.D. Raval et al. in

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“…These schemes are adaptive and mitigate the underreaching/overreaching effects because of the presence of shunt FACTS device, but only single‐phase fault has been taken into consideration. The schemes based on traveling waves are used to protect the transmission lines . These schemes can also locate the fault; however, distinct relays having very high‐sampling frequency are required.…”

Section: Introductionmentioning

confidence: 99%

ERF-based fault detection scheme for STATCOM-compensated line

Gupta

Tripathy

2016

Int. Trans. Electr. Energ. Syst.

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Summary The shunt flexible AC transmission system devices affect the protection schemes because of reactive power injection. Therefore, robust protection schemes are required. This study presents a fault detection scheme, which is based on estimated reactive power factor (ERF) and differential current with modified setting. The ERF is defined as sine of phase difference between the static synchronous compensator tap voltage and differential current. The static synchronous compensator tap voltage can be estimated using local end voltage and current. The ERF is measured at both the relay ends. In capacitive mode, if both ERFs are more than upper threshold, the fault is external, and if any ERF is less than upper threshold, the fault is internal. In inductive mode, if ERF is between upper and lower threshold, fault is internal else, if differential current is more than modified differential current setting, the fault is internal, or else, the fault is external. The performance of presented scheme is investigated for various system configurations with PSCAD/EMTDC simulations. Further, the scheme is successfully validated in real‐time digital simulator. It is found that the scheme is robust and selective for various faulty conditions, compensation level variations, and location variations.

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Implementation and Application of Practical Traveling-Wave-Based Directional Protection in UHV Transmission Lines

Cited by 71 publications

References 16 publications

A New Differential Protection of Transmission Line Based on Equivalent Travelling Wave

A New Differential Protection of Transmission Line Based on Equivalent Travelling Wave

Wavelet Transform Based Relaying Scheme for Double Circuit Transmission Line Protection

ERF-based fault detection scheme for STATCOM-compensated line

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