Industry Ethernet switchboard especially used for communication of wind power generation plant

Abstract

An Ethernet switching system special for wind power field communication comprises a switching network controller (1), a network interface (2), an electrical source switching part (6), a double electrical source interface (5), a wiring coding / decoding circuit (4), the wiring coding / decoding circuit (4) connects with the switching network controller (1), the switching network controller (1) separately connects with the electrical source switching part (6) and the network interface (2), the electrical source switching part (6) connects with the double electrical source interface (5), it is characterized in that it also comprise redundant optical fiber chain circuit part (7). The present invention overcomes the shortcomings of the prior Ethernet switching system anti-interfering ability poor,and short communication distance etc. The present invention network can still ensure the optical fiber network integrality and connectivity equipment internal optical redundant chain circuit techniqueafter the equipment power-down, to resolve the wind power plant a big difficult in data communication.

Description

technical field [0001] The invention relates to an industrial Ethernet switchboard specially used for communication in wind power plants, which is mainly used in the communication between the central monitoring room of the wind power plant and each single wind power generator in the wind power plant. In this way, the central control room can remotely monitor and control the wind turbines in the whole factory. Background technique [0002] In current wind power plants, the main means of communication are still based on RS-232 or RS-485 electrical port communication and RS-232 or RS-485 optical fiber communication. The former has been basically eliminated at present. RS-232 or RS-485 optical fiber communication can temporarily meet the communication requirements of the old-fashioned wind turbines, because the old-fashioned wind turbines have higher requirements for communication reliability, communication bandwidth (communication capacity), and real-time communication than th...

AI Technical Summary

Problems solved by technology

And the old-fashioned wind turbines only need to transmit some unimportant monitoring data to the monitoring center to monitor the operation of the wind turbine. At the same time, RS-232 or RS-485 electrical port communication uses cables as the transmission medium, so there are the following Disadvantages: 1. The anti-interference ability is extremely poor; 2. The communication distance is too small (generally no more than 1.2Km); 3. It is easy to introduce the lightning strike outside the fan into the computer and other important instruments and equipment inside the fan or the control room, thereby damaging the equipment and equipment ; 4. The communication capacity is not enough (it is impossible to transmit a large amount of real-time data and images); 5. The real-time performance cannot meet the requirements of new wind turbines

The old-fashioned wind turbines are controlled by their own computers, but the real-time control of the current wind turbines is realized through the communication network (that is, the central control room implements the control and management of all wind turbines in the entire wind farm). Therefore, the communication The reliability and real-time requirements are not allowed to make any mistakes, because even a small instruction error will cause huge damage and immeasurable economic losses to the wind turbine or the entire wind farm.

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