Complementary method for handling fault in distribution network based on dual cable power supply

A technology for distribution network failure and distribution network, which is used in electrical components, emergency protection circuit devices, etc.

Inactive Publication Date: 2016-08-24
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the variety of distribution network power supply modes, the existing distribution network fault handling cannot meet the actual needs for some special operation modes. Therefore, it is necessary to provide differentiated distribution network fault handling technologies for special operation modes to Meeting the needs of changing distribution network power supply modes

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  • Complementary method for handling fault in distribution network based on dual cable power supply
  • Complementary method for handling fault in distribution network based on dual cable power supply

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Embodiment Construction

[0012] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0013] A supplementary method for fault handling based on dual-cable power distribution network, which analyzes the dual-cable power distribution network and obtains a solution strategy for differentiated fault handling. The failure of distribution network fault location caused by the false alarm phenomenon of cable fault, by expanding the isolation range, the unconfirmed false alarm signal is shielded, and the fault area is included in the isolation range, so as to ensure the accuracy of fault location and avoid the fault caused by location. Secondary trip due to failure.

[0014] as attached figure 1 , #1 line and #2 line form a hand-in-hand loop through #1 ring network cabinet, #2 ring network cabinet and #4 ring network cabinet, the contact switch is #4 ring network cabinet 42 contact switch, #1 ring network cabinet and #4 ring netwo...

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Abstract

The invention relates to a complementary method for handling a fault in a distribution network based on dual cable power supply. An analysis is conducted for a dual cable power supply distribution network to obtain a solving strategy for differential fault handling. To ensure, as for dual cable power supply, the dual power supply property of users after non-fault recovery is to avoid failure in fault positioning of a distribution network due to false alarm phenomena of dual cable faults, to shield false alarm signals that cannot be confirmed by expanding the scope of isolation and to include a faulty region in the scope of isolation. The invention considers the adaptability of fault handling functions of the dual cable power supply distribution network at this stage, the impact of the trend for special operating modes on a general fault handling logic algorithm, and the general fault handling logic flaws, and ensures wide adaptability and practicability of fault handling of the distribution network, thereby improving the fault handling reliability of the distribution network, shortening the power supply time and providing customer satisfaction.

Description

technical field [0001] The invention relates to a distribution network fault processing technology, relates to a fault processing technology in a distribution automation system, in particular to a supplementary method for fault processing of a distribution network based on dual-cable power supply. Background technique [0002] The distribution network fault isolation and power supply recovery methods in the prior art are all analyzed for the general distribution network grid structure. However, due to the variety of distribution network power supply modes, the existing distribution network fault handling cannot meet the actual needs for some special operation modes. Therefore, it is necessary to provide differentiated distribution network fault handling technologies for special operation modes to Meet the needs of the ever-changing distribution network power supply mode. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the object of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/28
CPCH02H7/28
Inventor 刘钧元李聪利翟储臣王磊赵宇营尹鹏杨晓斌王颖洁
Owner STATE GRID TIANJIN ELECTRIC POWER
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