Mechanism analysis and solutions to tap-changers frequent action problem of Gaoling back-to-back HVDC

Jian Yin; Ying Pu; Qian Li

doi:10.1117/12.3024617

13 May 2024 Mechanism analysis and solutions to tap-changers frequent action problem of Gaoling back-to-back HVDC

Jian Yin, Ying Pu, Qian Li

Proceedings Volume 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023); 131596R (2024) https://doi.org/10.1117/12.3024617
Event: Eighth International Conference on Energy System, Electricity and Power (ESEP 2023), 2023, Wuhan, China

Abstract

In the Gaoling back-to-back HVDC, there are frequent actions of the converter transformer tap-changer during the power adjustment period. The number of tap-changer actions is significantly higher than the normal design value, and there is invalid reciprocating adjustment of the tap-changer, which brings serious challenge to safe operation of equipment. This paper first studies the principle of tap-changer control of a back-to-back HVDC, and further analyzes the frequent action mechanism of the tap-changer based on the actual operating data of the Gaoling back-to-back HVDC. The RTDS simulation test reproduces the frequent action of the tap-changer, and a solution to control the dead zone reference value by changing the firing angle of the tap-changer on the rectifier side according to the power change state is proposed. Finally, the effectiveness of the solution is verified by the RTDS simulation test.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jian Yin, Ying Pu, and Qian Li "Mechanism analysis and solutions to tap-changers frequent action problem of Gaoling back-to-back HVDC", Proc. SPIE 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023), 131596R (13 May 2024); https://doi.org/10.1117/12.3024617

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