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Intelligent protection of multiterminal VSC-HVDC systems: aspects of simulation and implementation

Grant number: 18/10667-6
Support type:Scholarships abroad - Research Internship - Doctorate (Direct)
Effective date (Start): August 15, 2018
Effective date (End): August 14, 2019
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal researcher:Denis Vinicius Coury
Grantee:Vinícius Albernaz Lacerda Freitas
Supervisor abroad: Olimpo Anaya-Lara
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Research place: University of Strathclyde, Scotland  
Associated to the scholarship:15/21167-6 - Fault detection, fault location and intelligent protection of multiterminal HVDC lines, BP.DD


The high short-circuit currents Voltage Source Converters (VSCs) which also have a rapid rise rate, are still a challenge for High Voltage Direct Current (HVDC) multiterminal systems reliability. As soon as a fault starts in an HVDC grid, large over currents have to be rapidly detected and interrupted by breakers. However, it is not straightforward to locate the point of occurrence of a fault due to multiple current paths. Several algorithms were proposed for multiterminal VSC-HVDC grids, however, there is still a lack of techniques that selectively identify the short-circuited branch in the timescale needed in the VSC context. Thus, the present proposal proposes developing and implementing signal processing and intelligent algorithms for VSC-HVDC system protection, as they emerge as possible improvements for existing techniques. In order to develop a protection algorithm for multiterminal VSC-HVDC systems, the proposed methodology consists of simulations of several types of faults in a fourterminal symmetric monopolar VSC-HVDC system comprising Modular Multilevel Converters (MMCs), with posterior fault and algorithm-improvement analysis in software such as Matlabor Python. The final expected result is a protection algorithm which can identify the faulted portion of the multiterminal system within the timescale need in VSC-HVDC systems. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LACERDA, VINICIUS ALBERNAZ; MONARO, RENATO M.; CAMPOS-GAONA, DAVID; COURY, V, DENIS; ANAYA-LARA, OLIMPO. Distance protection algorithm for multiterminal HVDC systems using the Hilbert-Huang transform. IET GENERATION TRANSMISSION & DISTRIBUTION, v. 14, n. 15, p. 3022-3032, . (18/10667-6)
TIAN, SHANGEN; CAMPOS-GAONA, DAVID; LACERDA, VINICIUS A.; TORRES-OLGUIN, RAYMUNDO E.; ANAYA-LARA, OLIMPO. Novel Control Approach for a Hybrid Grid-Forming HVDC Offshore Transmission System. ENERGIES, v. 13, n. 7, . (18/10667-6)
LACERDA, VINICIUS ALBERNAZ; PENA-ALZOLA, RAFAEL; CAMPOS-GAONA, DAVID; MONARO, RENATO MACHADO; ANAYA-LARA, OLIMPO; COURY, DENIS VINICIUS. Short-Circuit Analytical Model for Modular Multilevel Converters Considering DC Cable Capacitance. IEEE ACCESS, v. 8, p. 202774-202784, . (15/21167-6, 18/10667-6)
LACERDA, VINICIUS A.; MONARO, RENATO M.; PENA-ALZOLA, RAFAEL; CAMPOS-GAONA, DAVID; COURY, V, DENIS; ANAYA-LARA, OLIMPO. Control-based fault current limiter for modular multilevel voltage-source converters. INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, v. 118, . (18/10667-6)

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