Substation wireless buffer relay method and substation wireless buffer relay system

Abstract

The invention provides a substation wireless buffer relay method and a substation wireless buffer relay system, and relates to the field of wireless relays. The substation wireless buffer relay methodincludes the steps that a buffer relay receives a data request sent by a terminal, and forwards the data request to a PWPN-MBS (power wireless private network macro base station); if the OAM (operation, administration and maintenance) in the PWPN-MBS determines that the data request meets a preset condition, the buffer relay receives a control signal of the PWPN-MBS to perform a buffering mechanism, wherein the buffering mechanism includes buffering data and retrieving data. The substation wireless buffer relay method can reduce the bandwidth consumption when repeatedly requesting the same data, optimizes the link resource allocation, and improves the access efficiency of the terminal in the substation to the historical data service of the smart grid dispatching system.

Description

technical field [0001] The invention relates to the technical field of wireless relay, in particular to a substation wireless buffer relay method and a substation wireless buffer relay system. Background technique [0002] In the smart grid dispatching system, the historical data values ​​of a large number of equipment such as the voltage value, frequency value, AC line segment endpoint, transformer winding, circuit breaker, etc. Provide, and then display historical data changes in the form of curves or tables, which is convenient for dispatchers to intuitively monitor the operation status of the power grid. [0003] Due to the real-time and reliability requirements of power services, it is necessary to reduce the communication delay between the terminals in the substation and the dispatching system, and improve the access efficiency of the terminals to historical data services. In practical applications, indoor terminals are a typical Scenario, the signal must penetrate th...

AI Technical Summary

Problems solved by technology

[0003] Due to the real-time and reliability requirements of power services, it is necessary to reduce the communication delay between the terminal in the substation and the dispatching system, and improve the access efficiency of the terminal to historical data services. In practical applications, indoor terminals are a typical Scenario, the signal must penetrate the walls of the building, which will lead to very high penetration loss, which will significantly reduce the data rate, spectrum efficiency and energy efficiency of wireless transmission; the general method is to use the indoor-outdoor relay with a large antenna array The system introduces the exterior of each building to connect the macro base station of the electric wireless private network, that is, the indoor-outdoor relay network structure; however, this connection lacks certain economic effectiveness, and most of the popular historical data have high repeatability , that is, many terminals may continuously request the same content, so repeated downloading of the same content takes up a lot of bandwidth

Images