An adaptive distance relay protection scheme for enhanced protection security

Gawande, Prashant; Bedekar, Pallavi; Bagewadi, Milind; Dambhare, Sanjay

doi:10.1109/icpes.2016.7584119

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…Whereas, in case of advanced protection relays, other methods such as differential equations and mathematical operation are used to calculate the impedance, which are obviously more accurate and fast methods. Overall, this can be deduced from the above discussion that the distance protection relays have various categories of mis operations and even solution to these mis operations cannot eliminate the associated challenges completely [8]- [11]. Consequently, it can be concluded that conventional methods of distance protection relays have some limitations in the optimum operation of relay and thus fail to provide better protection.…”

Section: Introductionmentioning

confidence: 95%

The performance comparison of artificial intelligence based distance relays for the protection of transmission lines

et al. 2022

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The safe and reliable generation and transmission of electricity is the desirable factor for utilities which arises the need of protection equipment such as relays in the power systems. According to recent studies, the conventional relays are not able to provide the required protection to the power systems, resulting in the emergence of various artificial intelligence (AI) techniques such as (i) artificial neural network (ANN); (ii) adaptive neuro fuzzy interface system (ANFIS); and (iii) fuzzy logic based relays for the protection. This work presents the protection scheme for transmission lines using various AI based distance relays along with performance comparison of these relays with a conventional numerical distance relay (NL). The comparison analysis has been performed by generating a test model in the MATLAB/Simulink environment and comparing “response time” against the same fault occurence for all relays. The comparison analysis found that AI based relays outperformed than conventional relay in terms of response time and accuracy level against the faults.

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Section: Introductionmentioning

confidence: 95%

The performance comparison of artificial intelligence based distance relays for the protection of transmission lines

et al. 2022

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“…OOS can affect the calculations of the load impedance in IEDs, where, at steady state conditions is not within the IED operating zone characteristic, to enter the calculations into the IEDs operating zone characteristic as show in Figure 13 When impedance due to power swing matches with the operating impedance of the distance relay, it will send false tripping to the cut breaker. During OOS the IEDs may cause undesired tripping of OHTL or other power system elements, by weakening the system and possibly lead to cascading outages and the shutdown of major portions of the power system [23,24] . Figure 14 shows the three-phase current and voltage at OOS, so at the point of the voltage is low, the protection relay impedance calculation will sense this point as a fault in the system.…”

Section: Oos Effect On Distance Function In Iedsmentioning

confidence: 99%

“…So, the performances of distance elements at OOS conditions must be blocking the distance function in IEDs during stable power swings in the system. But the OST function should be considered to accomplish differentiation stable from unstable power swings, and separation to system areas at the predetermined network locations and at the appropriate source-voltage phase-angle difference between systems, in order to maintain power system stability and service continuity [14][15][16][17][18][19][20][21][22][23][24][25][26] .…”

Section: Distance Function Requirements In Ieds At Oosmentioning

confidence: 99%

Advanced Control Techniques for Enhance the Power System Stability at OOS Condition

Eltamaly

Mossa

El‐Sayed

et al. 2019

I-ES

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<p>The power system stability is the accurate operation of the electric grid by restoring balance after being subjected to an abnormal condition such as fault, line switching, load rejection, and loss of excitation. Protective equipment in high voltage substations should fast and precisely localize the faults. Some abnormal conditions in the power system such as out-of-step (OOS) condition which is not a real fault, but the protection equipment will consider it is. This misjudgment will cause the loss of synchronism between areas within the power system or between interconnected systems and will lead to blackout of the national grid. This paper studied the OOS condition, philosophy of protection relay device and how to avoid the false operation for distance function by Out of Step Blocking (OSB) by using the advanced protection relay, to improve the stability of power system. </p>

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“…The backup protection based on wide‐area measurement data can prevent false tripping during load encroachment. In general, during the case of load encroachment, the distance relay observes the impedance trajectory as lying in its Zone‐3 operating zone [4, 5]. If not blocked, the relay may trip the associated circuit breaker, which results in the redistribution of power flow in the lines neighbourhood of this disconnected line [6].…”

Section: Introductionmentioning

confidence: 99%

Novel phasor sequence‐based fault detection scheme for wide‐area backup protection of series‐compensated line

Anand

Kalita

Parida

2020

IET gener. transm. distrib.

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For series-compensated line, the distance relay finds its limitations during voltage inversion, current inversion, load encroachment, power swing and balanced fault during the power swing. These limitations can be overcome by wide-area backup protection schemes. This study proposes a novel fault detection technique utilising the synchrophasor data of voltage and current signals at system protection centre. The algorithm compares the phase angle difference between positive-sequence voltage phasor under system intact condition and real-time positive-or negative-sequence current phasor, which is computed from the synchronised data obtained from phasor data concentrator after identifying the possible critical buses to which the faulted line is connected. Different cases of fault type, distance and resistance have been considered to validate the proposed scheme with 3-generator, 9-bus western system coordinating council using MATLAB/Simulink platform. The results justify the suitability of the proposed scheme to be deployed for achieving more reliable performance. Nomenclature V¯f pre-fault positive-sequence voltage phasor at the fault location I¯f fault current phasor through the fault resistance Z¯1 1 , Z¯2 1 positive-sequence impedances behind buses 1 and 2 Z¯1 2 , Z¯2 2 negative-sequence impedances behind buses 1 and 2 Z¯1 0 , Z¯2 0 zero-sequence impedances behind buses 1 and 2 Z¯L 1 1 , Z¯L 2 1 positive-sequence transmission line impedances between fault point and buses 1 and 2 Z¯L 1 2 , Z¯L 2 2 negative-sequence transmission line impedances between fault point and buses 1 and 2 Z¯L 1 0 , Z¯L 2 0 0 positive-, negative-and zero-sequence current phasors observed at bus-2

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An adaptive distance relay protection scheme for enhanced protection security

Cited by 9 publications

References 15 publications

The performance comparison of artificial intelligence based distance relays for the protection of transmission lines

The performance comparison of artificial intelligence based distance relays for the protection of transmission lines

Advanced Control Techniques for Enhance the Power System Stability at OOS Condition

Novel phasor sequence‐based fault detection scheme for wide‐area backup protection of series‐compensated line

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