Based on the network business and its data classification in the electric power industry,this paper attempts to provide a description of calculations about different data and present measurement methods and principles of network information transmission wide band in the power industry.
It is pointed out that the key technique is how to allocate the transmissionbandwidth of various types of information and how to control the transmission flow of information. A bandwidth allocatingmethod of giving first priority to the information with strong real--time properties and a method of constraining transmissionflow by controlling different transmission rate for various types of information from the sender are proposed.
It also can improve the bandwidth of transmission widely when using E1 rate to transmit current differential information. This can be used by the protection to enhance its performance.
By adapting AR(augment reality) in outputting channel, the information of robotics status and warning was accentuated in the transmission. That method effectively saves the resources of transmission band and reappearance, lightens the burden of operators and contributes to a good operator consciousness to local condition and remote environment.
To improve the quality of the signal transmission and increase the bandwidth,a type of mixed transmission design of low-speed digital signals and high-speed digital video signals in optical fiber is proposed.
In this paper the three-dimensional spectra of television signals sampled in different patterns are analysed and a compatible system with increased resolution is put forward. In this system the additional detail information is delivered in complementary high-pass and low-pass filtering and the transmitting standard for current systems can be kept unchanged.
The paper introduces the medium access control protocol of the fiber distributed data interface (FDDI) with emphasis and discusses the bandwidth required by the different monitor information in expressway system. A method that FDDI network applies to the transmission of the monitor information of the expressway is presented.
Principles, technical conditions and methods of digitized comprehensive transmission of substation information ontelemetering. telesignalization, telecontrol. teleadjusting, remote viewing, remote diagnosis and maintenance, and faultrecording by lP technology are described. It is pointed out that the key technique is how to allocate the transmissionbandwidth of various types of information and how to control the transmission flow of information. A bandwidth allocatingmethod of giving first priority to the i...