Failure type identifying method and system of power distribution network

A distribution network fault and type identification technology, applied in the field of electric power engineering, can solve the problems of low accuracy and low efficiency of distribution network fault identification, and achieve the effect of improving efficiency and accuracy

Active Publication Date: 2015-01-14
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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Problems solved by technology

[0005] Based on this, it is necessary to provide a distribution network fault type identification method and syste

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  • Failure type identifying method and system of power distribution network
  • Failure type identifying method and system of power distribution network

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[0029] The specific implementations of the method and system for identifying the fault type of the distribution network provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0030] reference figure 1 , figure 1 Shown is a flowchart of a method for identifying fault types in a distribution network according to an embodiment, which includes the following steps:

[0031] S10, obtaining the real-time waveform of the signal in the working process from the transmission line of the distribution network;

[0032] In the above step S10, the real-time waveform is the waveform of the signal in the working process of the distribution network. The real-time waveform can reflect the current working condition of the distribution network. Obtaining the real-time waveform helps to find the fault in the transmission line of the distribution network in time and find the corresponding s solution.

[0033] S30. Match the real-time waveform with ...

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Abstract

The invention provides a failure type identifying method and system of a power distribution network, wherein the failure type identifying method of the power distribution network comprises the following steps: obtaining a real-time waveform of a signal in a working process from a transmission line of the power distribution network; matching the real-time waveform with a waveform in a waveform library, finding out a waveform the matching degree with the real-time waveform is greater than or equal to a first preset threshold to obtain a matched waveform; respectively extracting edge feature points of the real-time waveform and the matched waveform, calculating a Hausdorff distance between the edge feature points; screening the matched waveform with minimum Hausdorff distance from the real-time distance to obtain a failure waveform; and determining a failure type of the real-time waveform according to the type of the failure waveform. According to the failure type identifying method and system of the power distribution network, a complicated mathematical model is built so that the failure type in the power distribution network can be accurately judged, thus the failure identifying efficiency and accuracy of the power distribution network are improved.

Description

technical field [0001] The invention relates to the technical field of electric power engineering, in particular to a method and system for identifying fault types of distribution networks. Background technique [0002] Electricity plays an extremely important role in the national economy and holds the lifeline of the national economy. It is the responsibility of the power sector to ensure the safe, reliable and efficient power generation and power supply of the power system. With the development of social economy and the improvement of people's living standards, the modern power system is becoming larger and more complex, and people have higher and higher requirements for the continuity and stability of electric energy. At the same time, failures in power systems, especially transmission lines, are unavoidable. Due to long-term exposure to the natural environment, the possibility of failure is very high. In order to quickly monitor and determine the type of distribution ...

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Application Information

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IPC IPC(8): G01R31/08
Inventor 曾庆辉罗容波吴沃生陈轶斌吴丽贤吴树鸿李新李慧邱太洪林钰杰
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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