Dynamic phasor-driven digital distance relays protection

M, Ernesto Vázquez; Zamora-Méndez, Alejandro; Paternina, Mario R. Arrieta; Guajardo, Luis Alonso Trujillo; Serna, José Antonio de la O

doi:10.1016/j.epsr.2020.106316

Cited by 9 publications

(4 citation statements)

References 18 publications

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“…The DPbased method was able to successfully detect and issue a trip signal for the simulated evolving fault. The tests not shown due to lack of space confirmed that the method can work for a wide range of source-to-line impedance ratios (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). 12 Operating point on the L-R plane for phase-to-ground short circuit in the forward direction…”

Section: Other Considerationsmentioning

confidence: 90%

“…Using Equation ( 26), the comparator signals for inductance reach can be defined with the help of Equation (18) as…”

Section: Phase-to-phase Fault Loopmentioning

confidence: 99%

“…First, the literature survey on DPs and their applications in power systems revealed that there is very little published research that investigates the merits of DPs for power system protection; specifically the merits of modelling operating equations in the DP domain. In the limited published literature that uses DPs for power system protection, the application is limited to the use of phasors extracted using DP signal models as inputs to the distance protection algorithms developed considering the traditional static phasor definition [18][19][20][21]. Hence, the first objective is to investigate the use of DPs as a modelling approach to derive a line distance protection algorithm.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of using dynamic phasors for improving the speed of distance protection

Wijekoon

Rajapakse

2022

IET Generation Trans & Dist

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The application of dynamic phasors (DPs) in overhead line protection was investigated. Equations to estimate the fault loop inductance and resistance were derived using the principles of DPs. A systematic amplitude comparator-based line distance protection scheme was developed using the equations derived to estimate the fault loop inductance and resistance. A least-squares-based DP extraction method that mitigates the effect of decaying dc components was used to extract the DPs and their derivatives from time-domain signals. The performance of the algorithm was investigated using a power system simulated in PSCAD/EMTDC. Testing under different fault scenarios with different fault locations, fault resistance, and fault inception angles showed that the proposed line distance protection scheme is capable of operating successfully for forward and reverse faults, short circuits and high impedance faults, evolving fault conditions, and under a wide range of source impedance ratios. The operating time of the proposed scheme was compared with the standard quadrilateral relay, and the results showed that the operating times of the proposed scheme are faster for close-in phase-to-ground faults but not significantly improved for phase-to-phase and three-phase faults compared to the standard quadrilateral distance relay.

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Section: Other Considerationsmentioning

confidence: 90%

“…Using Equation ( 26), the comparator signals for inductance reach can be defined with the help of Equation (18) as…”

Section: Phase-to-phase Fault Loopmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of using dynamic phasors for improving the speed of distance protection

Wijekoon

Rajapakse

2022

IET Generation Trans & Dist

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“…Using the refined power supply scheme, the short circuit currents were calculated, which made it possible, having the numerical values of the short circuit currents, to calculate the relay protection settings and give recommendations on the place of its installation and adjustment in order to ensure the normal operation of electricity consumers [12,13].…”

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confidence: 99%

Improving the efficiency of relay protection at a mining and processing plant

Klyuev

Босиков

Гаврина

2021

PMI

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The paper presents the results of constructing effective relay protection in the power supply system of a mining and processing plant (MPP). A brief description of the MPP is given, the power supply and substitution circuits used to calculate the short-circuit currents are given. A statistical analysis of failures in the electric network of the MPP has been carried out, which makes it possible to draw conclusions about the nature of failures ranges. Analysis of the registered faults shows that a significant part of them are line-to-earth faults, which in most cases turn into multiphase short circuits, which are interrupted by overcurrent protection. In order to improve the efficiency and reliability of the relay protection, the power supply scheme of the MPP was refined and analyzed. The calculation of the short-circuit currents was made, which made it possible to calculate the settings of the relay protection and give recommendations on the place of its installation and adjustment in order to ensure the normal operation of electricity consumers. To reduce the number of failures to the cable insert on the line leaving the administrative and household complex (AHC), and to increase the reliability of power supply to consumers, it is advisable to divide the capacities of the existing 10 kV line into two parallel ones by laying a second line. It is recommended to install a current cut-off on the line outgoing to the AHC, the feasibility of the installation of which was shown by calculations. This will reduce the chance of failures to the cable gland. Data on the setting currents of overcurrent protection and current cut-off are given on the selectivity card.

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