Title:
ELECTRIFIED RAILWAY POWER GRID SYSTEM WITHOUT NEGATIVE SEQUENCE IN WHOLE PROCESS AND WITHOUT POWER SUPPLY NETWORKS AT INTERVALS
Document Type and Number:
WIPO Patent Application WO/2016/026404
Kind Code:
A1
Abstract:
An electrified railway power supply system without negative sequence in the whole process and without power supply networks at intervals. The electrified railway power supply system consists of an external power supply system, an external input and internal power supply system, and an internal power supply system. In external power supply, single-phase power supply is changed into double-phase power supply, and a single phase α and a single phase β are input into an internal power supply system through contactors α' and β' of the left and right arms of a double-phase pantograph. In internal power supply, when a double-phase pantograph T1 rises and a double-phase pantograph T2 falls, the single phase α is used for supplying power to a motor train unit, and the single phase β is used for charging a storage battery; when the double-phase pantograph T2 rises and the double-phase pantograph T1 falls, the single phase α is used for supplying power to the storage battery, and the single phase β is used for supplying power to the motor train unit; and when both the double-phase pantograph T1 and the double-phase pantograph T2 fall, the storage battery is used for supplying power to the motor train unit under the condition of no external power supply. The double-phase pantographs rise and fall alternately, so that accumulation of negative-sequence current caused by single phase current of the double phases in a three-phase power grid can be further reduced. Anchor section posts (2) and cantilever positioning devices (3) arranged between the uplink and the downlink are designed to be T-shaped. A passing neutral section is not provided in the whole running process, power supply networks are not arranged at intervals in a plurality of sections of the whole process, and the motor train unit can run normally without mechanical support of the power supply networks.
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Inventors:
SONG YUQUAN (CN)
GUAN XIAOFANG (CN)
GUAN XIAOFANG (CN)
Application Number:
PCT/CN2015/086817
Publication Date:
February 25, 2016
Filing Date:
August 13, 2015
Export Citation:
Assignee:
UNIV JILIN (CN)
International Classes:
B60M1/12
Foreign References:
| CN101073994A | 2007-11-21 | |||
| CN104210385A | 2014-12-17 | |||
| CN202319965U | 2012-07-11 | |||
| CN201712489U | 2011-01-19 | |||
| US5788033A | 1998-08-04 | |||
| EP0769407B1 | 2000-03-01 | |||
| JP4916456B2 | 2012-04-11 | |||
| JP3917118B2 | 2007-05-23 |
Attorney, Agent or Firm:
NTD UNIVATION INTELLECTUAL PROPERTY AGENCY LTD. (CN)
北京永新同创知识产权代理有限公司 (CN)
北京永新同创知识产权代理有限公司 (CN)
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