Title:
COMMUTATION FAILURE PREDICTION FOR LINE-COMMUTATED CONVERTER BASED HIGH VOLTAGE DIRECT CURRENT (LCC-HVDC) SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2023/226048
Kind Code:
A1
Abstract:
There is provided a computer-implemented method for predicting commutation failures, so as to prevent commutation failures from occurring, at an inverter side valve group (35, 36) of a Line-Commutated Converter based High Voltage Direct Current (LCC HVDC) system (10), during an occurrence of a fault in a connection (40) between an Alternating Current (AC) system (31) and an inverter side AC bus (32) of the LCC HVDC system, the fault being on a phase (54, 56, 58) of the connection. The method comprises: determining a AC bus commutation voltage, for each phase of the AC bus; calculating a voltage time integral required by the LCC HVDC system for successful commutation; calculating, based on the determined AC bus commutation voltages, a minimum voltage time integral provided by the AC system; comparing the minimum voltage time integral provided by the AC system with the voltage time integral required by the LCC HVDC system; and determining whether a commutation failure will occur based on the comparison.
Inventors:
ZHA KUNPENG (CN)
YANG YUEFENG (CN)
QU HAITAO (CN)
CUI CHUNYAN (CN)
XUE YING (GB)
CHEN NAN (GB)
ZHANG XIAO-PING (GB)
YANG YUEFENG (CN)
QU HAITAO (CN)
CUI CHUNYAN (CN)
XUE YING (GB)
CHEN NAN (GB)
ZHANG XIAO-PING (GB)
Application Number:
PCT/CN2022/095770
Publication Date:
November 30, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
C EPRI ELECTRIC POWER ENG CO LTD (CN)
International Classes:
H02M1/00; H02M1/32; H02M5/458; H02M7/162
Foreign References:
| CN110011346A | 2019-07-12 | |||
| CN113783401A | 2021-12-10 |
Other References:
ZHOU HONGYU ET AL: "Comprehensive review of commutation failure in HVDC transmission systems", ELECTRIC POWER SYSTEMS RESEARCH, ELSEVIER, AMSTERDAM, NL, vol. 205, 5 January 2022 (2022-01-05), XP086941271, ISSN: 0378-7796, [retrieved on 20220105], DOI: 10.1016/J.EPSR.2021.107768
ZHU RENLONG ET AL: "Commutation Failure Analysis Considering the Frequency Response of Transmission Line", 2021 IEEE 2ND CHINA INTERNATIONAL YOUTH CONFERENCE ON ELECTRICAL ENGINEERING (CIYCEE), IEEE, 15 December 2021 (2021-12-15), pages 1 - 6, XP034070970, DOI: 10.1109/CIYCEE53554.2021.9676761
C. V. THIOJ. B. DAVIESK. L. KENT: "Commutation failures in HVDC transmission systems", IEEE TRANSACTIONS ON POWER DELIVERY, vol. 11, no. 2, April 1996 (1996-04-01), pages 946 - 957
ZHU RENLONG ET AL: "Commutation Failure Analysis Considering the Frequency Response of Transmission Line", 2021 IEEE 2ND CHINA INTERNATIONAL YOUTH CONFERENCE ON ELECTRICAL ENGINEERING (CIYCEE), IEEE, 15 December 2021 (2021-12-15), pages 1 - 6, XP034070970, DOI: 10.1109/CIYCEE53554.2021.9676761
C. V. THIOJ. B. DAVIESK. L. KENT: "Commutation failures in HVDC transmission systems", IEEE TRANSACTIONS ON POWER DELIVERY, vol. 11, no. 2, April 1996 (1996-04-01), pages 946 - 957
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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