Title:
METHOD AND SYSTEM FOR DETECTING WHETHER TRAIN ENTERS NEUTRAL ZONE STATE, AND ASSEMBLY RELATED THERETO
Document Type and Number:
WIPO Patent Application WO/2022/156257
Kind Code:
A1
Abstract:
A method for detecting whether a train enters a neutral zone state, comprising: continuously acquiring a power grid voltage based on a sampling period, and determining whether the number of anomalies wherein the grid voltage change rate exceeds a first change rate in a first time window is greater than a first number of times; if yes, acquiring the operating power of the train, and determining whether the train is in a light load situation according to the operating power; if yes, performing pulse blocking on a four-quadrant converter of the train; and acquiring electrical parameters of a connecting end between the four-quadrant converter and a contact network so as to determine whether the train enters a neutral zone state based on the electrical parameters. Also disclosed are a system and apparatus for detecting whether the train enters the neutral zone state, and a readable storage medium. Since the pulse blocking of the four-quadrant converter in a light load situation does not affect the train operation, the problem that neutral zone detection in the light load situation is time consuming is solved, and the safety of the train passing through the neutral zone with speed is guaranteed.
Inventors:
JIANG FENGBING (CN)
ZHANG BIN (CN)
LIU QING (CN)
MAO KANGXIN (CN)
HE WEI (CN)
ZHU YULONG (CN)
XU JIANGHUI (CN)
LI MIN (CN)
XIONG YUYU (CN)
ZHANG BIN (CN)
LIU QING (CN)
MAO KANGXIN (CN)
HE WEI (CN)
ZHU YULONG (CN)
XU JIANGHUI (CN)
LI MIN (CN)
XIONG YUYU (CN)
Application Number:
PCT/CN2021/120169
Publication Date:
July 28, 2022
Filing Date:
September 24, 2021
Export Citation:
Assignee:
ZHUZHOU CRRC TIMES ELECTRIC CO LTD (CN)
International Classes:
B60L9/00
Foreign References:
| CN112744081A | 2021-05-04 | |||
| CN109421548A | 2019-03-05 | |||
| CN110843547A | 2020-02-28 | |||
| EP1591301A1 | 2005-11-02 | |||
| CN109624793A | 2019-04-16 | |||
| FR3088591A1 | 2020-05-22 | |||
| CN102723906A | 2012-10-10 | |||
| JP2007181399A | 2007-07-12 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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