GPS synchronized current differential protection of mutually coupled line

Unde, Snehal; Dambhare, Sanjay

doi:10.1109/icpes.2011.6156629

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…In addition to improvements and recommendations around ground directional overcurrent and distance relays, there are literatures that have considered use of other form of protection schemes to address the adverse impacts of mutual coupling. A current differential protection scheme is developed in [8] using transmission line π-equivalent model and phase coordination approach. Adaptive digital distance relaying scheme has been proposed by [9], [10] to mitigate against the drawbacks associated with conventional ground distance elements in the presence of mutual coupling.…”

Section: Introductionmentioning

confidence: 99%

Analytical Approach to Study the Impacts of Mutual Coupling on Transmission Lines Protection Systems

Brahman¹,

Novosad²,

Tabrizi³

et al. 2019

2019 IEEE Texas Power and Energy Conference (TPEC)

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While there are numerous literatures that have addressed the impact of mutual coupling on the reliability and security of protection schemes and have provided possible mitigation solutions, there has not been adequate research and documentation presenting a comprehensive analytical approach to 1) estimate the magnitude of mutual coupling and 2) quantify the adverse impact of mutual coupling in real-life scenarios under several system faults across various types of protective elements. This should be considered as the first stage of any mutual coupling related study preceding the second stage in which the mitigation against mutual coupling is to be developed. The proposed methodology can be used to study the impact of mutual coupling on ground overcurrent relays, ground and phase distance as well as pilot protection schemes. As part of the proposed approach, EMT simulation is utilized to quantify the extent of sub-transient overshoot and current reversal that may have adverse impact on the performance of studied relays. A real-life case study within the ERCOT network has been used to demonstrate the proposed study approach.

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Section: Introductionmentioning

confidence: 99%