Press plate monitoring host having remote switching function

Abstract

The invention discloses a press plate monitoring host having a remote switching function. The press plate monitoring host is characterized by comprising a central processing unit (1), wherein the central processing unit (1) is connected with a data acquisition unit (2), a control output unit (3) and a communication unit (4) respectively, the communication unit (4) is connected with RS485 communication ports (5) of a substation DTU respectively, the data acquisition unit (2) is connected with a first sensor (7), a second sensor (8) and a third sensor (9) respectively, and the control output unit (3) is connected with a first press plate (10), a second press plate (11) and a third press plate (12) respectively. The press plate monitoring host has the advantages of low fault rate, safety and reliability and is simple to maintain, the automatic level is improved, the monitoring quality and the working efficiency are improved, and the accident rate and the maintenance cost are reduced.

Description

Technical field: [0001] The invention relates to a pressure plate monitoring host with the function of remote switching, which belongs to the technical field of communication and automation at the construction site of a power substation. Background technique: [0002] With the promotion and application of smart substations in the power grid, the implementation of unattended operation and management of substations has become the main management mode today. [0003] The substation has unattended conditions, but in the substation of the power system, the switching of the secondary protection pressure plate is still manually operated on site. In various traditional protections, the pressure plate is used to connect or disconnect a certain circuit. The outlet pressure plate of the protection is the connecting piece that connects or disconnects the excitation circuit of the outlet relay or trip coil. If it is found that there is voltage at both ends of the pressure plate before ...

AI Technical Summary

Problems solved by technology

This will result in delays, manpower and material resources, and economic losses.

Moreover, the on-duty personnel cannot understand the status of each pressure plate in the substation in real time, and cannot fully grasp the operating status of the substation

Switching the press plate has a high probability of operation, and it is impossible to realize communication automation and achieve the function of remote switching control press plate

If you want to change this situation, you can only replace all the microcomputer protection devices in the whole station with new protection devices with the remote management function of the pressure plate, which will bring a series of problems: high cost, long replacement cycle and long power failure, DTU and The master station needs to be reconfigured, and all protection parameters need to be readjusted, which cannot be realized due to social and economic benefits.

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