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Fault location method suitable for closed-loop operation of distribution network

A closed-loop operation and fault location technology, applied in fault location, fault detection by conductor type, information technology support system, etc. problems, to achieve the effect of improving the real-time power supply, fast and efficient positioning and isolation

Active Publication Date: 2018-12-07
NANJING SIFANG EPOWER ELECTRIC POWER AUTOMATION +1
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Problems solved by technology

Centralized feeder automation technology is limited by the scale of the area, and the real-time performance is greatly reduced with the increase of equipment in the area, which affects the reliability of power supply; the local sequence overlap method is based on time and power failure in non-faulty areas, and even multiple overlaps impact the system. Completing fault isolation at the cost also affects the real-time performance, safety and reliability of power supply

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  • Fault location method suitable for closed-loop operation of distribution network
  • Fault location method suitable for closed-loop operation of distribution network
  • Fault location method suitable for closed-loop operation of distribution network

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Embodiment Construction

[0029] Embodiments of the present invention will be described in detail below, and the embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0030] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.

[0031] In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as exampl...

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Abstract

The present invention discloses a fault location method suitable for a closed-loop operation of a distribution network, belonging to the field of the electrical power system distribution network automation technology. The method is used for distribution network fault location of a closed-loop operation or an opened-loop and closed-loop mixture operation; each switch in the distribution network is provided with one terminal; adjacent switch terminals communicate on a peer-to-peer basis to interact collected fault states, current flow information and switch-on-off state information of switches in real time; and the switches which are detected to have faults or have no fault are configured to locate the fault sections of the switches according to whether the fault states and the plus or minus power of adjacent switches in the section are in accordance with the switch or not. According to the invention, the rapid and effective location and isolation of short circuit faults in a closed-loop operation distribution line may be realized, and therefore the timeliness, the safety and the reliability of power supply are improved.

Description

technical field [0001] The invention discloses a fault location method suitable for closed-loop operation of a distribution network, and belongs to the technical field of power system distribution network automation. Background technique [0002] Feeder Automation (FA, Feeder Automation) refers to the use of automated devices or systems to monitor the operating status of distribution lines, detect line faults in time, quickly diagnose and isolate faulty areas, and restore power supply to non-faulty areas. [0003] There is a big difference between distribution network line protection and transmission network line protection, especially for medium and low voltage distribution network lines compared with transmission lines, usually the distance between the two switches is shorter (usually not more than 1km), so different sections The fault current difference is very small and can be ignored, and it is obviously impossible to realize line protection according to the fault curre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
CPCG01R31/086Y04S10/52
Inventor 罗海波许健乔峰王家华赵春雷徐骏吴恒
Owner NANJING SIFANG EPOWER ELECTRIC POWER AUTOMATION
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