Charge comparison protection of transmission lines-communications concepts

Albrecht, N.P.; Fleck, W.; Fodero, Ken; Ince, R.

doi:10.1109/61.156987

Cited by 12 publications

(4 citation statements)

References 1 publication

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“…5 shows the fuzzy block. 5and (6). Fundamental and some other harmonic components are gained using full cycle Fourier transform in this block.…”

Section: Differential Protection and Fuzzy Logicmentioning

confidence: 99%

“…Differential relays are used in abundance for the protection of generators and transformers. Proliferation of differential relays in transmission lines is due to the communication technologies advancement [5,6]. In the 1980s, these progress lead to producing a differential relay, which works by digital current and is based on optic fiber or microwave communication in Japan [7].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Fuzzy Theory-Based Differential Protection Scheme for Transmission Lines

Abasi

Farsani

Rohani³

et al. 2020

IJIE

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Ever-increasing consumption of electrical energy has forced extension of power networks to large areas. This would raise reliability and stability problems of power networks. Hence, there is a serious need to work on protection arrangements and relays behavior for solving these problems. By suitable configuration of protection systems and using correct protection functions, negative effects of undesirable faults in power system will be decreased. In this paper, an algorithm is proposed to enhance the performance of differential relays based on the fuzzy logic systems. The algorithm is employed for the protection of short transmission lines against internal faults with/without resistance. By selecting the best stability characteristics based on fuzzy logic systems, the possibility of protection relays' malfunction will be negligible. In this algorithm, sensitivity, reliability and speed of the relay performance are preserved at suitable levels. Considerable external faults which can saturate current transformers (CTs) have been taken to account in this algorithm. This study purpose is to present an algorithm based on the fuzzy logic, which can select the best slopes for stability characteristics of a differential relay during various conditions. The presented algorithm performance has been analyzed by PSCAD/EMTDC software and compared to conventional methods. The results of fuzzy adaptive protection performance testing prove that the proposed algorithm remains fully immune to current transformer saturation during external faults. The other advantage of this algorithm bases on the fact that the scheme does not need to detect CT saturation, it processes the proposed criteria signals independently of the situation.

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“…5 shows the fuzzy block. 5and (6). Fundamental and some other harmonic components are gained using full cycle Fourier transform in this block.…”

Section: Differential Protection and Fuzzy Logicmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Fuzzy Theory-Based Differential Protection Scheme for Transmission Lines

Abasi

Farsani

Rohani³

et al. 2020

IJIE

View full text Add to dashboard Cite

show abstract

“…This protection was initially used for power transformers and generators [1,2,3,4]. However, with the development of communication and computer technology, this concept was also applied to transmission lines [5,6,7]. This allows improving speed clearing times for faults occurring at any point on a transmission line.…”

Section: Introductionmentioning

confidence: 99%

Transmission lines protection based on the current eigenvalues differential concept

Pires

Guerreiro

Fortunato

et al. 2010

10th IET International Conference on Developments in Power System Protection (DPSP 2010). Managing the Change

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This work presents a new approach for a current differential protection of the transmission lines. The proposed approach is based on the Clarke-Concordia transformation and principal component analysis. First the acquired current signals are transformed into "αβo" components by applying the ClarkeConcordia transformation. This allows obtaining typical patterns. To identify these patterns a principal component analysis is performed. Several tests under different fault conditions were performed. The obtained results allow verifying the effectiveness of the proposed approach.

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“…The main reason for using this relay type is due to their simplicity and high sensitivity. So, with the development of digital relays and communication technology, current differential relays have also been used for the protection of transmission lines [4,5,6]. However, when this relay type is applied to transmission lines there are some problems such as sampling misalignment, time delay of the communication channel, line capacitive charging current and errors in current transformers make current comparison difficult to achieve.…”

Section: Introductionmentioning

confidence: 99%

A current differential line protection using a synchronous reference frame approach

Pires

Guerreiro²

2008

IET 9th International Conference on Developments in Power Systems Protection (DPSP 2008)

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This paper presents a new approach for a current differential protection of the transmission lines. This approach is based on the Park transformation or ABC-dqo transformation. Using the ABC-dqo transformation the three phase quantities are transformed into a synchronous rotating reference frame. In this way, the line currents of the three phase system are measured and transformed into three dc components. So, immunity to problems such as sampling misalignment and time delay of the communication channel will be improved. Several test results are presented in order to show the effectiveness of the proposed approach.

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Charge comparison protection of transmission lines-communications concepts

Cited by 12 publications

References 1 publication

A Novel Fuzzy Theory-Based Differential Protection Scheme for Transmission Lines

A Novel Fuzzy Theory-Based Differential Protection Scheme for Transmission Lines

Transmission lines protection based on the current eigenvalues differential concept

A current differential line protection using a synchronous reference frame approach

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