https://orcid.org/0000-0001-8864-7594
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Abstract
The faults in high voltage direct current (HVDC) transmission lines cause a sudden rise in DC, resulting in over-stressing of converter valves and transformer windings. DC line faults of longer duration, or permanent nature, will lead to a severe disturbance in the associated AC network as well. Thus, the HVDC line faults must be detected immediately to interrupt the fault current by initiating proper actions of control and protection. This paper implements a new method to detect the asymmetrical (pole-to-ground) faults in the conventional bipolar LCC-HVDC transmission system. The proposed method defines a Fault Indicating Parameter (FIP) based on the transient voltage and current elements of each pole. The transient elements are obtained based on single-end measurements. Single-end or non-unit measurements lead to the development of simple, cost-effective and fast protection criteria. Also, the method is applicable to faults close to the line boundary and of high resistivity. A two-terminal bipolar LCC-HVDC transmission system, based on ±500 kV, 1000 MW and 900 km length, is used to evaluate the performance of the proposed technique in offline mode, using MATLAB/Simulink software. Also, the results are validated using an OPAL-RT real-time simulator under divergent fault conditions. The simulation results prove the robustness, selectiveness and accuracy of the proposed scheme.
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No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Ravi Shankar Tiwari
Ravi Shankar Tiwari received a BSc degree in electrical engineering from Govt. Engineering College, Rewa, M.P, India in 2007 and an MSc degree in electrical engineering with specialization in power systems from VJTI, Mumbai, India, in 2010. He is assistant professor in the Department of Electrical Engineering, GLA University,Mathura, India and currently pursuing a PhD degree in electrical engineering at the National Institute of Technology, Jamshedpur, India. His research interest is power system protection, renewable and distributed generation. Corresponding author. Email: [email protected]
Om Hari Gupta
Om Hari Gupta is currently assistant professor in the Department of Electrical Engineering, National Institute of Technology Jamshedpur, India. He received his PhD degree (electrical engineering) from the Indian Institute of Technology Roorkee, Roorkee, India. He is a recipient of the Canadian Queen Elizabeth II Diamond Jubilee Scholarship for research visiting the Ontario Tech University (Formerly University of Ontario Institute of Technology), Oshawa, ON, Canada in 2017. His major areas of research interest include power system protection, microgrid, renewable-based distributed generation and electric power quality. Dr Gupta is a senior member of IEEE and a reviewer for various international journals including IEEE Transactions on PowerDelivery, Electric Power Components and Systems, International Journal of Electrical Power and Energy Systems, etc. Email: [email protected]
Vijay K. Sood
Vijay K Sood received a PhD degree from the University of Bradford, Bradford,U.K., in 1977. He is currently associate professor at Ontario Tech University, Oshawa, Canada. He has extensive experience in the simulation of HVDC-FACTS systems and their controllers. He has authored two textbooks on HVDC Transmission. His research focuses on the monitoring, control and protection of power systems and the integration of renewable energy systems into the smart grid. Dr Sood is registered professional engineer in the province of Ontario, a Fellow of the IEEE, Engineering Institute of Canada, and an Emeritus Fellow of the Canadian Academy of Engineering. Email: [email protected]
Salauddin Ansari
Salauddin Ansari received his BE in electrical engineering from RGPV Bhopal, MP and an MTech degree with a specialization in power systems. He is currently pursuing a PhD degree in the Department of Electrical Engineering, at the National Institute of Technology Jamshedpur, India. His research interests include distributed generation and microgrid protection and islanding detection. Email: [email protected]