Title:
変換弁故障の事前警報方法及びシステム
Document Type and Number:
Japanese Patent JP6421257
Kind Code:
B2
Abstract:
Disclosed is a method for providing warning about a failure in a converter valve. The method comprises: within a predetermined time range, recording time information of status indication signals fed back by thyristor control units (TCU) of a converter valve, performing statistics and comparison of the pieces of time information using a bias statistics method, marking a thyristor level whose bias exceeds a preset value, and determining a probability of failure in the thyristor according to the marking result. Also disclosed is a system for providing warning about a failure in a converter valve. The system comprises a register array used to store bias data of thyristor levels of a converter valve and a high-speed processor used to process, using a bias statistics method, status indication signals fed back by TCUs. The solution of the present invention can identify a thyristor level with a relatively high probability of failure, achieve early warning, and provide a reference for device replacement, thereby reducing a probability of outage of a direct current system due to a failure of a thyristor level, and providing references for device performance optimization and circuit design optimization of a converter valve.
Inventors:
Gao Shen Hu
Fan taishun
One Young Pin
Zhang Shan
Pan Weimin
Yun Min
Zhou Guchin
Fan taishun
One Young Pin
Zhang Shan
Pan Weimin
Yun Min
Zhou Guchin
Application Number:
JP2017564643A
Publication Date:
November 07, 2018
Filing Date:
March 01, 2017
Export Citation:
Assignee:
NR ELECTRIC CO., LTD
NR ENGINEERING CO., LTD
NR ENGINEERING CO., LTD
International Classes:
H02J13/00; H02H7/12; H02M1/088
Domestic Patent References:
| JP10501959A | ||||
| JP58036169A | ||||
| JP58172390U | ||||
| JP9008277A |
Attorney, Agent or Firm:
Kaji/Suhara Patent Office