Method for realizing fault positioning of subway direct-current traction power supply system
A technology of DC traction and power supply system, which is applied in the direction of fault location, fault detection according to conductor type, measurement of electricity, etc., which can solve problems such as time-consuming and relying on manual experience, and achieve the effect of fast processing and restoration of power supply
Active Publication Date: 2020-09-25
GUANGZHOU METRO GRP CO LTD +2
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Problems solved by technology
The entire process of fault location is handled manually, which is time-consuming and highly dependent on manual experience.
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Embodiment 1
[0112] The subway DC traction power supply system consists of three substations A, B and C. The catenary adopts a bilateral power supply method. The DC busbar supplies power to the upward and downward catenary through 4 DC feeder switches, and two adjacent traction substations supply power to the catenary in the same feeder section between stations at the same time. like figure 1 As shown, during normal operation, the DC feeder 214 of station A and the DC feeder 212 of station B provide bilateral power supply to the traction catenary in the same section, and the DC feeder 214 of station B and the DC feeder 212 of station C supply the traction catenary in the same section. Two-way power supply is provided by the network, and the DC incoming lines and DC feeders of the three substations A, B, and C are all equipped with DC traction protection devices.
[0113] During normal operation, the PSCADA system monitors that the circuit breakers 201, 202, 211, 212, 213, and 214 of the t...
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The invention discloses a method for realizing fault positioning of a subway direct-current traction power supply system. The method comprises the following steps that: S1, after a PSCADA system monitors protection action information sent by a direct-current traction protection device, action events 10 seconds before a protection action moment and 70 seconds after the protection action moment areautomatically invoked from a database; S2, an intelligent video analysis system collects and analyzes equipment panel video information and primary equipment video information; and an analysis resultis converted into signal information which can be identified by the PSCADA and the signal information is transmitted the PSCADA system and the like. According to the invention, a mode of combining a PSCADA system and an intelligent video analysis system is adopted; signals of the PSCADA system and the intelligent video analysis system jointly participate in intelligent analysis logic, and automatic judgment and automatic positioning of faults are achieved based on the characteristic that the subway direct-current traction power supply system breaks down and the fault processing mode. The problem that traditional fault positioning excessively depends on manpower is solved, and the method has important significance in rapid fault processing and power supply recovery.
Description
technical field [0001] The invention relates to the technical field of system fault location, in particular to a method for realizing fault location of a subway DC traction power supply system. Background technique [0002] The subway DC traction power supply system is the power source of the train, and its safe and reliable operation is the guarantee for the normal operation of the train. When the DC traction power supply system of the subway fails, if the fault location can be quickly determined, it is of great significance for the rapid processing of the fault and the restoration of power supply. [0003] When a fault occurs in the DC traction power supply system of the subway, the fault handling process includes fault location, fault elimination, fault isolation, and restoration of power supply. Since the DC traction equipment has no backup, once it fails, the train will not be able to take the train normally. How to eliminate the fault as soon as possible, restore the ...
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IPC IPC(8): G01R31/08H02H7/26H02H3/087
CPCG01R31/086G01R31/088H02H3/087H02H7/263H02H7/268
Inventor 余龙赖沛鑫谢金莲招康杰王文浩刘洋
Owner GUANGZHOU METRO GRP CO LTD