Distance protection of inverter based renewables power evacuating lines and downstream network: Issues and mitigation approach

Inverter based renewables (IBR) can adversely influence the reliability of distance relay which is the most ubiquitous form of protection for long high voltage transmission is endangered. Especially, distance protection of lines which are connected directly at the point of connection (POC) of the IB...

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Bibliographic Details
Main Authors: Pradhan, Vedanta, George, Neethu, Naidu, OD, Gajic, Zoran, Zubic, Sinisa
Format: Conference Proceeding
Language:English
Subjects:
Asia
converter interfaced generation
distance relay
downstream lines
Heuristic algorithms
Inverters
Numerical simulation
Protective relaying
Renewable energy sources
renewables
Transmission line protection
Wind farms
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Summary:Inverter based renewables (IBR) can adversely influence the reliability of distance relay which is the most ubiquitous form of protection for long high voltage transmission is endangered. Especially, distance protection of lines which are connected directly at the point of connection (POC) of the IBR are more prone to failures. In this paper, we extend a more generic discussion on issues with distance relays by including relays which are even downstream to the POC. This analysis is important from the perspective of reliable operation of a coordinated system of distance relays. The paper also presents a mitigation approach which can potentially enhance relay effectiveness without requiring any new information or infra-structural changes to the traditional implementation. The proposed solution can be implemented as a modification of the existing algorithms. We use numerical simulations of a modified IEEE 39 bus test system to analyze and demonstrate.
ISSN:2378-8542
DOI:10.1109/ISGTAsia54193.2022.10003580