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Line fault detection method for synchronous synthesis of data among multiple devices

A line fault and data synchronization technology, applied in short-circuit testing, fault location, fault detection by conductor type, etc., can solve the problem of inability to obtain zero-current and zero-voltage data in real time, affecting grounding faults, and inability to accurately determine grounding faults and other problems to achieve the effect of reducing the amount of data transmission, ensuring functional requirements, and improving the failure recognition rate

Active Publication Date: 2021-03-02
SHIJIAZHUANG KE ELECTRIC
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Problems solved by technology

An acquisition unit is hung on the three-phase line. At present, everyone analyzes and judges transient faults based on the transient changes of phase current and phase voltage as criteria. This single-phase independent judgment is inaccurate and incomplete.
[0003] Defects in the existing technology: factors such as rainy and snowy weather affect the irregular change of voltage, and current changes caused by load fluctuations affect the judgment of ground faults, and the zero current and zero voltage data cannot be obtained in real time, so it cannot be accurate Judgment of ground fault

Method used

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  • Line fault detection method for synchronous synthesis of data among multiple devices
  • Line fault detection method for synchronous synthesis of data among multiple devices

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[0026] See attached Figure 1-2 , the fault indicator system of the present invention includes a three-phase acquisition unit and a collection unit; the three-phase acquisition unit includes an A-phase acquisition unit, a B-phase acquisition unit and a C-phase acquisition unit; a collection unit, an A-phase acquisition unit, a B-phase acquisition unit and The C-phase acquisition unit is equipped with a time synchronization wireless communication module and a data sending and receiving wireless communication module, and the two wireless module models are 433M.

[0027] The present invention uses two communication modules for functional separation, because the sampled data transmission has a large amount of data and cannot be used to take into account other functions, and the use of one communication module is likely to cause the occurrence of time synchronization asynchronous phenomena. A line fault detection method synchronously synthesizing data among multiple devices, realiz...

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Abstract

The invention provides a line fault detection method for synchronous synthesis of data among multiple devices, which belongs to the field of fault indicator systems in power systems. The method is realized based on a three-phase acquisition unit and a collection unit in a fault indicator system, and the three-phase acquisition unit and the collection unit realize data interaction by means of a wireless communication module. The three-phase acquisition unit comprises an A-phase acquisition unit, a B-phase acquisition unit and a C-phase acquisition unit, synchronization of system time and sampling time among all the units is ensured by improving equipment and a detection method, and synchronous sampling data are transmitted to the collection unit in real time to synthesize real-time zero flow and zero voltage for transient state study and judgment, so that the fault recognition rate is improved.

Description

technical field [0001] The invention belongs to the field of fault indicator systems in power systems, and in particular relates to a line fault detection method for synchronously synthesizing data among multiple devices. Background technique [0002] The State Grid Corporation of China has gradually increased its investment in the distribution network. At present, the fault indicator system, as a distribution product hung on the overhead line or cable, is characterized by its strong practicability, convenient use, fault identification and judgment, and easy fault identification. Recognition, so that it is widely used in the field of power distribution. One acquisition unit is hung on each of the three-phase lines. At present, everyone analyzes and judges transient faults based on the transient changes of phase current and phase voltage as criteria. This single-phase independent judgment is inaccurate and incomplete. [0003] Defects in the existing technology: rainy and sn...

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Application Information

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IPC IPC(8): G01R31/52G01R31/58G01R31/08G01R19/02G01R19/175
CPCG01R31/52G01R31/58G01R31/085G01R31/088G01R19/02G01R19/175Y04S10/52
Inventor 李英春吴纳磊贾海旭徐少雄张春豪孟楠刘矗赵浩翟志国王志辉高洁孙涛
Owner SHIJIAZHUANG KE ELECTRIC
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