Passive intelligent network distribution device based on MODBUS protocol

Abstract

The invention discloses a passive intelligent network distribution device based on a MODBUS protocol. The passive intelligent network distribution device comprises a master controller, a human-computer interface displayer, a key control circuit, a high voltage side electrical parameter acquisition unit, a high voltage side line switching volume input unit, a switching volume output unit, a fault detecting and recording unit, an optical fiber communication interface device, a general microcomputer protection device and another passive intelligent network distribution device, wherein the human-computer interface displayer, the key control circuit, the high voltage side electrical parameter acquisition unit, the high voltage side line switching volume input unit, the switching volume output unit and the fault detecting and recording unit are connected with the master controller respectively; the optical fiber communication interface device is communicated with the master controller through a serial communication interface; the optical fiber communication interface device is communicated with the general microcomputer protection device and the other passive intelligent network distribution device respectively through optical fibers based on the MODBUS protocol. According to the passive intelligent network distribution device based on the MODBUS protocol, due to the fact that the passive intelligent network distribution device is combined with the optical fiber communication interface device for use, stable operation of a relay protection device is guaranteed, and relevant electrical parameters are transmitted through the optical fibers at the same time. As a result, an electric power telecommunication network has expandability, universality and stability, and power transmission and distribution are more intelligent.

Description

technical field [0001] The invention relates to a passive intelligent distribution network device, in particular to a passive intelligent distribution network device based on the MODBUS protocol, belonging to the technical field of power communication distribution devices. Background technique [0002] In the field of 2-35KV power transmission and distribution, conventional relay protection devices do not have communication interfaces or use cables as transmission media. The communication quality is not high, the communication distance is limited, and the communication error rate is high. At the same time, the communication protocols used by different relay protection device manufacturers are different, and the compatibility between them is not good. The power communication network communication is unstable and it is inconvenient to expand. [0003] At the same time, the current transformation of rural power grids should follow the principles of "safety and reliability, app...

AI Technical Summary

Problems solved by technology

[0002] In the field of 2-35KV power transmission and distribution, conventional relay protection devices do not have communication interfaces or use cables as transmission media. The communication quality is not high, the communication distance is limited, and the communication error rate is high.

At the same time, different relay protection device manufacturers adopt different communication protocols, and the compatibility between them is not good.

The power communication network communication is unstable and it is inconvenient to expand

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