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Distributed feeder automated terminal and distribution line fault distinguishing system and method

A technology for feeder automation, distribution lines, applied in the direction of fault location, information technology support system, detection of faults by conductor type, etc.

Inactive Publication Date: 2016-11-23
SHANGHAI JIAO TONG UNIV +1
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  • Abstract
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Problems solved by technology

[0004] The present invention provides a distributed feeder automation terminal and distribution line fault discrimination system and method to solve the above existing technical problems

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  • Distributed feeder automated terminal and distribution line fault distinguishing system and method
  • Distributed feeder automated terminal and distribution line fault distinguishing system and method
  • Distributed feeder automated terminal and distribution line fault distinguishing system and method

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Embodiment Construction

[0038] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0040] In an embodiment of the present invention, the distributed feeder automation terminal may include: a current collection and recording module, a synchronization and time synchronization module and a peer-to-peer communication module. The current acquisition and recording modul...

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Abstract

The invention provides a distributed feeder automated terminal and a distribution line fault distinguishing system and method. Each of two ends or multiple ends of a distribution line is provided with one distributed feeder automated terminal, the two ends or multiple ends of the distribution line synchronously sample line current signals and record waves through the distributed feeder automated terminals, the distributed feeder automated terminals transmit the recorded waveforms by means of peer-to-peer communication if the line experiences a fault, and fault positioning and fault isolation are achieved at the distributed feeder automated terminals by judging current phase angle of the current signals sampled at the adjacent two ends; massive it is satisfied that after massive access of distributed power supplies to a distribution network, accurate fault positioning and isolating are performed if the distribution network experiences a fault.

Description

technical field [0001] The invention relates to the field of smart grids, in particular to a distributed feeder automation terminal and a fault discrimination system and method for distribution lines. Background technique [0002] Since a large number of distributed energy sources will be connected to the distribution network in the future and the bidirectional power flow during operation will completely change the magnitude and direction of the fault current under fault conditions. In some cases, it will lead to traditional distribution protection systems and distribution automation systems. Therefore, there is a very urgent need to improve feeder automation technology to cope with the impact of distributed energy access to the grid. On the other hand, the future distribution network allows conscious islands to restore more loads to improve the reliability of the system after a grid failure. Therefore, the traditional protection scheme based on the fault current magnitude c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/086G01R31/088Y04S10/52
Inventor 刘东翁嘉明安宇陈飞李庆生唐学用张裕农静皮显松李丽娟罗宁赵庆明王丰元卢嗣斌
Owner SHANGHAI JIAO TONG UNIV
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