Location method of remote power supply system and cable short circuit fault
A technology of short-circuit fault and positioning method, applied in the field of electric power, can solve problems such as time-consuming and labor-intensive, and achieve the effect of reducing maintenance workload
Active Publication Date: 2016-08-24
广州大中电力技术有限公司
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Problems solved by technology
[0004] Once a short-circuit fault occurs at a certain point on the transmission cable, the entire line needs to be cut and checked section by section during maintenance, which is time-consuming and labor-intensive
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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0031] The invention aims to solve the problem that in the existing DC remote power supply system, when a short-circuit fault occurs in the transmission cable, the inspection can only be carried out by reducing the line segment by segment of the entire line, resulting in a large workload.
[0032] see figure 2 , The remote power supply system according to the present invention includes two power supply points, namely the first power supply point (power su...
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The invention provides a remote power supply system and a method for locating short-circuit faults of cables. Among them, the remote power supply system includes: two power supply points, at least one power consumption point and a monitoring center, wherein each power consumption point includes a remote The control switches of the controllers are connected in parallel, and the monitoring center receives the alarm output signals generated by each local power supply and each remote controller, and judges the area where the short-circuit fault occurs in the transmission cable according to the received alarm output signals. The remote power supply system can be applied to the location method of the cable short circuit fault. As can be seen from the above, the remote power supply system and the method for locating short-circuit faults of cables according to the present invention can ensure that when the remote power supply system is configured as a chain network, when a short-circuit fault occurs in the transmission cable, a certain location can be located through the monitoring center query. section, thereby greatly reducing the maintenance workload.
Description
technical field [0001] The invention relates to the field of electric power, in particular to a remote power supply system and a method for locating short-circuit faults of cables. Background technique [0002] At present, a large number of DC remote power supply systems are used in the communication industry, video surveillance, railway interval communication and other fields. [0003] When the existing DC remote power supply system forms a point-to-multipoint chain distributed power supply network, the local power supply is usually used as the power supply point, and the higher DC voltage output by the local power supply is provided to each distributed remote power supply through the transmission cable. The terminal power supply, and then the remote power supply converts the input voltage into the voltage applicable to the electrical equipment to supply power for the electrical equipment, such as figure 1 shown. [0004] Once a short-circuit fault occurs at a certain poi...
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IPC IPC(8): H02J13/00G01R31/02G01R31/08
CPCY04S20/242Y04S40/128Y02B70/30Y02E60/00Y04S10/52
Inventor 刘必成
Owner 广州大中电力技术有限公司