Performance assessment of VSC-based HVDC system in asynchronous grid interconnection: Offline and real-time validation of control design with symmetric optimum PI tuning

Adesh Kumar Mishra; Saurabh Mani Tripathi; Omveer Singh; Ankit Kumar Srivastava; Thiyagarajan Venkatraman; Raghavendra Rajan Vijayaraghavan; Sachin Kumar; Rajvikram Madurai Elavarasan; Lucian Mihet-Popa

doi:10.1016/j.heliyon.2024.e35624

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Performance assessment of VSC-based HVDC system in asynchronous grid interconnection: Offline and real-time validation of control design with symmetric optimum PI tuning

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Performance assessment of VSC-based HVDC system in asynchronous grid interconnection: Offline and real-time validation of control design with symmetric optimum PI tuning

Adesh Kumar Mishra, Saurabh Mani Tripathi, Omveer Singh, Ankit Kumar Srivastava, Thiyagarajan Venkatraman, Raghavendra Rajan Vijayaraghavan, Sachin Kumar, Rajvikram Madurai Elavarasan and Lucian Mihet-Popa

Heliyon, Vol.10(15), e35624

2024

DOI: https://doi.org/10.1016/j.heliyon.2024.e35624

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Abstract

Asynchronous grid interconnection

HVDC system

Offshore AC network

Onshore AC network

PI controllers

Real-time simulation

Symmetric optimum PI tuning

Voltage source converter (VSC)

Asynchronous interconnection is essential for integrating AC networks operating at different frequencies, typically 50 Hz and 60 Hz. This need arises from distributed power generation methods, including offshore renewable sources and diverse regional grid configurations. Advanced strategies are required to overcome these frequency differences and ensure uninterrupted power transfer. High-Voltage Direct Current (HVDC) transmission systems facilitate efficient power exchange, enhancing grid reliability and stability. This study focuses on optimizing the Proportional-plus-Integral (PI) controller parameters within a 20 MVA Voltage Source Converters (VSC)-based HVDC system to enable asynchronous interconnection between offshore and onshore AC networks. The offshore VSC regulates active and reactive power, while the onshore VSC controls DC voltage and reactive power. A vector control approach with symmetric optimum PI tuning is proposed for a comprehensive performance assessment of the VSC-based HVDC transmission system. The effectiveness of the tuned PI controller parameters is evaluated through four test cases using MATLAB/Simulink for offline simulation and Typhoon HIL604 for real-time validation. These cases involve abrupt changes in reference active and reactive power for the offshore VSC; and in reference reactive power and DC voltage for the onshore VSC. Results demonstrate rapid and satisfactory dynamic performance across all test cases, as evidenced by offline simulations and real-time validation. The validation highlights the effectiveness of the proposed control design with symmetric optimum PI tuning, confirming its ability to enhance the overall performance of the HVDC transmission system for efficient asynchronous interconnection.

Details

Title: Performance assessment of VSC-based HVDC system in asynchronous grid interconnection: Offline and real-time validation of control design with symmetric optimum PI tuning
Authors/Creators: Adesh Kumar Mishra - Gautam Buddha University
Saurabh Mani Tripathi - Indira Gandhi Institute of Technology
Omveer Singh - Gautam Buddha University
Ankit Kumar Srivastava - Dr. Ram Manohar Lohia Avadh University
Thiyagarajan Venkatraman - Sri Sivasubramaniya Nadar College of Engineering
Raghavendra Rajan Vijayaraghavan - Automotive Department, Harman Connected Services India Pvt. Ltd., Bengaluru, 560066, India
Sachin Kumar - Govind Ballabh Pant University of Agriculture and Technology
Rajvikram Madurai Elavarasan - Murdoch University
Lucian Mihet-Popa - Østfold University College
Publication Details: Heliyon, Vol.10(15), e35624
Publisher: Elsevier Ltd
Identifiers: 991005692868707891
Murdoch Affiliation: School of Engineering and Energy
Language: English
Resource Type: Journal article

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