Distribution network dotted terminal online checking method and device

Abstract

The invention discloses a distribution network dotted terminal online checking method and device, and the method comprises the steps: selecting a plurality of devices to be subjected to dotted terminal checking from a device list, and starting the dotted terminal checking; issuing a verification starting message to the devices to be subjected to dotted terminal verification; enabling the devices to be subjected to dotted terminal checkingto confirm the verification starting message, begining to record the current sampling data, and caching the recorded data; acquiring recording data of a plurality of devices to be subjected to dotted terminal verification, and calculating phase differences among the recording data; and if the phase difference between the recording data A and the reference recording data is greater than a preset threshold value, determining that the current transformer of the device to be subjected to dotted terminal verification corresponding to the recording data A has a wiring error. According to the method and device, power failure correction is not needed, the personnel investment and the labor cost can be reduced, and the online rate of the terminal device is improved.

Description

technical field [0001] The present application relates to the technical field of electric power communication, and in particular to an online verification method and device for the same-name end of a distribution network. Background technique [0002] In the relay protection, the wiring mode of the current transformer on the same line directly affects whether the protection of the line operates correctly. Therefore, before a line is put into operation, the staff will check the current transformers on the entire line with the same name. , If there is a wiring error, it needs to be re-wired, and the amount of work is relatively large. At this stage, the methods commonly used in engineering to check the same-name terminal of current transformers are mainly DC method and instrument method. The direct current method is low in cost but complex in operation and easily leads to misjudgment. The instrument method is simple in operation and accurate in test but high in cost. In the ...

AI Technical Summary

Problems solved by technology

The direct current method is low in cost but complex in operation and easily leads to misjudgment. The instrument method is simple in operation and accurate in test but high in cost

In the distribution network, due to the limitation of the technical level of the maintenance personnel, there is often a lack of manual verification process. Once the current transformer is connected to the wrong wire after power-on, it cannot be corrected by power failure.

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