PLC-based power monitoring device and PLC-based power monitoring method

Abstract

The invention provides a PLC-based power monitoring device, which comprises a cabinet body, a power supply assembly and a control assembly, and is characterized in that a PLC module is adopted in thecontrol assembly to realize the functions of acquiring and displaying the on-off state of an important circuit breaker in a power system, interlocking and controlling related circuit breakers, and carrying out sound-light alarm when interlocking fails. According to the invention, the control switch is directly connected with the to-be-tested external equipment, thereby achieving the reliable control of important equipment. A ruggedized computer is adopted to perform calculation processing and analysis according to data sent by each communication line, and video signals are sent to a ruggedizedliquid crystal display screen for software display; the PLC module sends control information to the topological graph PCB according to the collected switching value, and hardware display is carried out; furthermore, a power system network topology structure is achieved, and real-time reliable display of the on-off state, the voltage, the current, the power and the insulation state of a main circuit breaker is realized.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a PLC-based power monitoring device and a monitoring method. Background technique [0002] PLC (Programmable Logic Controller, programmable logic controller) is a hardware device with high reliability and strong anti-interference ability. It is widely used in automatic control systems. PLC-based control systems have small size, high degree of automation, and high data processing capacity great features. There are many devices on the power system of civil ships, and the existing power monitoring system needs to realize real-time monitoring, display and control of the components of the power system, as well as data processing and other functions. The above functions are realized by pure software, which has the following defects: due to the memory limitation of the computer, as the processing time increases, the efficiency of data processing decreases; when th...

AI Technical Summary

Problems solved by technology

The above functions are realized by pure software, which has the following defects: due to the memory limitation of the computer, the efficiency of data processing decreases with the increase of processing time; when the software runs incorrectly (commonly known as running away), the entire system fails, so the reliability of the pure software system is not high

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