NDLI: Distance protection algorithm for multiterminal HVDC systems using the Hilbert

Content Provider	IET Digital Library
Author	Lacerda, Vinícius Albernaz Monaro, Renato M. Gaona, David Campos Coury, Denis V. Lara, Olimpo Anaya
Abstract	Multiterminal high-voltage direct current (HVDC) systems still need advances in terms of protection in order to improve their reliability. In this context, the distance protection can play a major role by adding selectivity to the existing DC fault detection algorithms. Hence, the present work proposes a non-unit DC distance protection algorithm that uses the frequency of the DC voltage transient oscillation to estimate the distance of the fault. The DC voltage transient frequency is extracted using the Hilbert–Huang transform and compared with a pre-defined frequency/distance curve. The technique was evaluated by simulating faults in a four-terminal symmetric monopole multiterminal HVDC system. In the simulation environment the algorithm was fully selective for faults within the first protection zone and had a correct operation rate of 94% or more for faults located in the second protection zone. To further validate the presented technique, the proposed algorithm was embedded in a digital signal controller, running in real-time. In all performed tests in hardware, the faults were correctly detected and identified as being internal or external. The results indicate that the proposed algorithm could be used in real-world applications, in conjunction with fault detection techniques, adding selectivity to multiterminal DC protection schemes.
Starting Page	3022
Ending Page	3032
Page Count	11
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 15, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.1551
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-05-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System D.C. Transmission DC Fault Detection Algorithm DC Voltage Transient Frequency DC Voltage Transient Oscillation Digital Control Digital Signal Controller Distance Protection Algorithm Fault Diagnosis Fault Location Fault Simulation Four-terminal Symmetric Monopole Multiterminal HVDC System High-voltage Direct Current System Hilbert Transform Hilbert–Huang Transform HVDC Power Transmission Integral Transforms Multiterminal DC Protection Scheme Multiterminal High-voltage Direct Current System Multiterminal HVDC System Nonunit DC Distance Protection Algorithm Power System Control Power System Protection Power System Transients Power Transmission Control Power Transmission Fault Power Transmission Protection Power Transmission Reliability Pre-defined Frequency-distance Curve Protection Zone Reliability
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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