Intelligent network monitoring system for special power supplies and communication method of intelligent network monitoring system

Abstract

The invention discloses an intelligent network monitoring system for special power supplies and a communication method of the intelligent network monitoring system. The intelligent network monitoring system comprises field-level industrial personal computers (IPCs), a double-RS485 communication network, a controller area network (CAN) bus, central-control-level computers, an industrial Ethernet and a remote server, wherein the field-level IPCs can monitor and dispatch a plurality of front-stage and back-stage devices of the executive-level special power supplies in workshops and perform monitoring, alarm and wave recording retrieval on electric energy quality of bus grids, and the communication between the executive-level power supplies and the field-level IPCs is achieved through the double-redundancy RS485 communication network to improve the reliability of communication. The central-control-level computers monitor a plurality of workshops through communication with the field-level IPCs in the plurality of workshops. A management level can communicate with the central-control-level computers in a plurality of plants through the Ethernet and perform centralized and unified management on the plurality of plants. According to the intelligent network monitoring system and the communication method, centralized and unified management can be performed on high-power special power supplies in the plurality of plants through computer and network technologies, and the production safety and the production efficiency are improved.

Description

technical field [0001] The invention relates to a monitoring system and its communication method, in particular to a networked remote monitoring system and its communication method for high-power special power supply. Background technique [0002] In electrolysis, electroplating, metal coloring, electrophoresis and other electrochemical industries, a variety of high-power and ultra-high-power DC or pulse power supplies are required. Among them, high-quality special steel and copper foil are the core key materials required by my country's major equipment manufacturing, major engineering construction and advanced national defense weapons, and the key equipment for the production of special steel and copper foil is - high-power special power supply. In large-scale smelting plants, the scale of steel smelting and electrolytic plating is very large. Generally, there are multiple plant areas, each plant area has multiple workshops, and each workshop has multiple high-power special...

AI Technical Summary

Problems solved by technology

It can be seen that each special power supply requires an RTU, which is costly and complicated in wiring

[0005] Both RTU and PLC have high reliability, but have the following disadvantages: the computing power is weak, and a single PLC cannot realize the control and data collection of multiple special power supplies, and the computing power of RTU is weaker than that of PLC.

This results in higher costs, which are mainly reflected in equipment costs, signal cable usage, installation costs, etc.

High-speed and high-frequency wave recording cannot be performed. If the power grid fails, it is difficult to analyze the cause of the failure through the waveform.

The special power supply is a power electronic device. Generally speaking, it will have a certain impact on the power quality of the power grid, while the traditional monitoring system does not collect data for the power quality of the bus.

In addition, it is difficult to develop a friendly and easy-to-use man-machine interface based on PLC or RTU

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