Evaluation of directional relay algorithms in the presence of FCL

Ashtiani, Hamid Jafarabadi; Samet, Haidar; Ghanbari, Teymoor

doi:10.1049/iet-smt.2016.0416

Cited by 7 publications

(2 citation statements)

References 35 publications

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“…References [3], [8] provide detailed explanations on the effects of IBRs on contemporary directional identification algorithms and some potential remedies. Recent literature has investigated the applicability of directional relay algorithms under IBRs induced system conditions [21], [22]. Some literature [3], [9] propose using zero-sequence quantities for making the directional decision (instead of negative-sequence).…”

Section: Introductionmentioning

confidence: 99%

A Negative Sequence Admittance Based Algorithm for Identifying Fault Direction in the Presence of Inverter Based Resources

Kariyawasam

Rajapakse

2023

IEEE Access

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Ever increasing integration of renewable resources into contemporary power systems has imposed a unique set of challenges for system protection. Effectiveness of techniques based on conventional system protection theory has long been questionable in protecting power systems with higher penetration of inverter-based resources (IBRs). Fault direction identification is one of the commonly affected protection functions in the presence of IBRs. This paper presents a novel algorithm to correctly identify fault direction using negative sequence admittance measurements. The proposed technique is robust and reliable and yields better results in comparison to conversional techniques in presence of IBRs. In addition, its operation is simple and can be conveniently incorporated into a modern digital relay.

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Section: Introductionmentioning

confidence: 99%

A Negative Sequence Admittance Based Algorithm for Identifying Fault Direction in the Presence of Inverter Based Resources

Kariyawasam

Rajapakse

2023

IEEE Access

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“…To deal with the voltage dead zone for the fault at the relay output, an auxiliary criterion using the correlation between the computed voltage drop and the measured voltage drop was added in [15]. However, the current waveform was seriously distorted by the current limiter in the first quarter cycle during the fault inception, so the performance of these timedomain directional elements was slightly poor [16]. Another time-domain method was proposed in [17] using the transient energy difference between forward and reverse faults, but this method based on traveling waves required a high sampling frequency.…”

Section: Introductionmentioning

confidence: 99%

A Control Method for Converter-Interfaced Sources to Improve Operation of Directional Protection Elements

Yang

Zhang

Chen

et al. 2023

IEEE Trans. Power Delivery

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The traditional fault control strategy of converter-interfaced renewable energy sources (CIRESs) may bring about a lower sensitivity level or misoperation of fault component-based directional elements. To overcome this problem, a new control scheme is proposed to adjust sequence impedance angles of CIRESs by computing suitable current references of the CIRES controller. Meanwhile, these current references are maximized by an iterative algorithm to make full use of the short-circuit capacity of CIRESs. The proposed control scheme is applicable to various faulty conditions such as different fault types, power factors, weak grids, and larger fault resistances. Compared with the new directional elements that need to update protection algorithms, the proposed control strategies can make CIRESs compatible with the existing directional elements whilst the necessary fault ride-through (FRT) requirements can still be satisfied. Furthermore, all the controller parameters are not required to be revised based on the detected fault type, even with only local measured data collected. The associated PSCAD simulations, real-time digital simulator (RTDS) testing and the downscale hardware experiment verify the proposed method.

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Studying a novel method for mitigation of the adverse impacts of SFCL on transmission line distance protection

Barzegar-Bafrooei

Foroud

2019

IET Generation, Transmission & Distribution

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Evaluation of directional relay algorithms in the presence of FCL

Cited by 7 publications

References 35 publications

A Negative Sequence Admittance Based Algorithm for Identifying Fault Direction in the Presence of Inverter Based Resources

A Negative Sequence Admittance Based Algorithm for Identifying Fault Direction in the Presence of Inverter Based Resources

A Control Method for Converter-Interfaced Sources to Improve Operation of Directional Protection Elements

Studying a novel method for mitigation of the adverse impacts of SFCL on transmission line distance protection

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