Communication terminal special for power communication

Abstract

The invention provides a communication terminal special for power communication. An optical fiber communication way and a TD-LTE (Time Division Long Term Evolution) wireless communication way are realized by adopting one communication terminal, automatic and manual switching between the two communication ways can be supported, the communication links of the two ways can be redundant to each other, and the communication ways can be switched according to a practical application scene. A power distribution automation communication channel is interrupted only when the two communication ways are interrupted at the same time, thereby greatly improving the reliability and stability of the power distribution automation communication channel. Two communication ways are provided, thereby enlarging the scene application range, and lowering the application limitation.

Description

technical field [0001] The invention relates to the technical field of electric power communication, in particular to a special communication terminal for electric power communication. Background technique [0002] With the development of the power grid, power communication has been widely used in various links such as power grid production control, management, and operation. An important direction of power grid development in recent years—smart grid is based on advanced communication technology, sensor technology, and information technology, and uses information interaction between grid equipment as a means to achieve grid security, reliability, economy, and energy conservation. Advanced modern power system. The new business of the smart grid is mainly reflected in the field of power distribution and consumption. As the "neural network" of the smart grid, it is the general trend to vigorously develop and build a distribution communication network. [0003] At present, the...

AI Technical Summary

Problems solved by technology

[0011] (1) The optical fiber communication channels in urban areas of the distribution network are vulnerable to damage by external forces and have low reliability;

[0012] For example, due to the complex geographical environment of the urban area, the optical cables of distribution network pipelines laid in dense urban areas are easily bitten off by rats or damaged by external forces such as pipe trench construction, resulting in frequent interruption of distribution automation optical fiber channels

[0013] (2) The repair time is longer after the optical cable is damaged;

[0014] For example, the repair process of distribution network optical cables is complicated, and certain tools, equipment and technologies are required for connection, which results in too long recovery time for distribution automation communication channels after distribution network optical cables are damaged

[0015] (3) The reliability of wireless communication is not as good as that of optical fiber communication;

[0016] For example, the electromagnetic environment in dense urban areas is complex, and the CPE communication terminal signals are easily affected by electromagnetic environment interference and occlusion, resulting in communication dropouts, making wireless private network communication poor in stability and reliability, far inferior to optical fiber communication

[0017] (4) Optical fiber communication cannot support DTU terminals using serial communication;

[0018] For example, some older models of DTU terminals only support RS232 serial port communication, and cannot use industrial switches, EPON and other optical communication devices that do not support serial ports to access, and can only use GPRS wireless public network or medium-voltage carrier access

[0019] To sum up, the existing power communication network has the problems of poor reliability, poor stability and limited use

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