An on-line monitoring system and monitoring method for the mechanical characteristics of a power distribution switch

Abstract

The invention discloses a power distribution switch machinery characteristic on-line monitoring system and a monitoring method. The power distribution switch machinery characteristic on-line monitoring system comprises a power distribution switch, a power distribution terminal and main station waveform recording and analysis system which are successively connected. The power distribution switch has an operation mechanism and controls the on-and-off of the power distribution circuit through the operation mechanism and realizes the fault clearing, isolation and a node for load transferring; the power distribution terminal is matched with the power distribution switch for collecting voltage and the current waveform of the operation mechanism, performing statistic on the motion times of the switch, collecting the switch position signals, realizing the pre-processing and initial determination of the information, and uploading the data to the main station waveform recording and analysis system; and the main station waveform recording and analysis system receives the waveform transmitted by the power distribution terminal. The invention can retrieves the waveform of the operation mechanism of any power distribution switch and the machinery characteristic determination result on the power distribution terminal by the power distribution switch and realizes the fault alarm and fault positioning of the operation mechanism of the power distribution switch in order to provide the convenience to the maintenance staff to maintain.

Description

technical field [0001] The invention relates to an online monitoring system and a monitoring method for the mechanical characteristics of a power distribution switch. Background technique [0002] The power distribution switch is an important primary device that constitutes the grid structure in the power distribution system, and is the basis for ensuring the reliable operation of the power distribution system. The power distribution system realizes the control of the on-off state of the power distribution switch through the control of the electric operating mechanism in the remote / local mode, realizes the isolation and removal of the faulty section of the line, and realizes the automatic function of the line such as the input of the non-faulty section, reliable action, no rejection It is the basic requirement of power distribution switch to operate without malfunction. The operating mechanism of the distribution switch acts as a "bridge" between the distribution switch and...

AI Technical Summary

Problems solved by technology

[0006] 1) Selection of appropriate sensors and poor installation adaptability to different power distribution switch operating mechanisms

With the standardization of the power distribution terminal interface of the power distribution switch machine by the State Grid Corporation of China, there is no interface and installation location for the general switch mechanical characteristic monitoring device;

[0007] 2) The life of the general monitoring device module is short, installation and maintenance are difficult, and the price is too high and the accuracy is not enough to make it impossible to promote;

[0008] 3) The existing monitoring device does not support the waveform reproduction and retrieval of the waveform recording and analysis system of the master station, and cannot realize remote online monitoring;

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