35kv simple substation communication system

Abstract

The invention discloses a 35kV simple substation communication system, which comprises the following integrated circuit boards: a cross board, a clock board, an optical interface board, an electric interface board, a sub-rate board and a power supply board, which are connected with one another through a bus, wherein the cross board is a core of an overall system function, is a collecting region of group and branch payloads and finishes the functions of business overlapping, overhead crossing and protection switching; online switching can be achieved by 1+1 backup configuration; the function of the clock board is to provide a system clock and a system frame header and to achieve network synchronization; meanwhile, a system overhead bus clock and the frame header are provided; two paths of 2.048Mbit / s and 2.048MHz external clock interfaces can be provided; 1+1 redundancy configuration is adopted; the optical interface board is used for providing optical interface boards of 622Mb / s, 155Mb / s and the like and is used for networking; the electric interface board is a 2Mb / s electric interface board and should adopt 1:N or 1+1 redundancy configuration; the sub-rate board is a 64Kb / s interface board, a two-line interface board and a four-line interface board, and is used for carrying out the businesses of telecontrol, telephone and the like; and 1+1 or 1:N redundancy configuration is adopted by the power supply board. According to the 35kV simple substation communication system, system communication of instation businesses can be effectively achieved; communication equipment configuration is simplified; and the workload of operating maintenance is reduced.

Description

technical field [0001] The invention relates to a 35kV simple substation communication system. Background technique [0002] In order to solve the problems of less distribution of power supply points in rural areas in mountainous areas, long power supply radius, mixed access of small hydropower and residential users, resulting in large fluctuations in voltage of distribution network lines and poor power supply quality, a construction mode of 35kV simple substations was created. Since the 35kV simple substation adopts the single-line single-variable line variable-group wiring mode, it is generally unnecessary to consider the line relay protection channel, and only need to consider communication channels such as scheduling automation and dispatching telephones. Compared with other sites on the main network, the communication service is relatively simple. The current communication methods mainly include the following: [0003] Prior art relevant to the present invention one ...

AI Technical Summary

Problems solved by technology

[0006] 1) The rigid transmission pipeline has low channel efficiency;

[0007] 2) It has a certain ability to support IP services, but there are restrictions on the development of all-IP services in the future;

[0009] 4) The investment is large, and the power consumption of a single station is large;

[0010] 5) The equipment configuration is complicated and not optimized enough, and the economy is lacking

If the 5MHz frequency is used, the rate of more than 10Mbps can be achieved, but there is a risk of illegal frequency occupation

[0015] 2) Limited transmission distance: the coverage distance is closely related to the actual wireless environment

[0016] 3) The security and reliability of the wireless system is lower than that of the wired transmission method, and the wireless transmission is easily affected by factors such as weather and terrain

[0017] The above schemes mainly have problems in reliability, safety and economy.

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