智能配電臺區(qū)通信方案研究
[Abstract]:As the cornerstone of the development of intelligent distribution station area, advanced communication technology maintains the reliable operation of distribution station area. With the continuous development of rural power grid, the load of rural distribution station area is increasing day by day, and the resulting new communication service brings new challenges to the existing communication mode. At present, most rural distribution stations in China rely on power line carrier (Power Line Carrier,PLC) and RS485 to transmit signals, and a few economically developed rural areas use GPRS communication, in which PLC and RS485 communication bandwidth resources are small and transmission speed is low. The signal quality is poor and can not be freely connected. However, the GPRS public network communication charges according to the flow rate, the use cost is expensive, and these three communication modes can not support the intelligent service such as video in the distribution station area, so it is necessary to transform the communication mode of the rural network distribution station area in order to improve the service ability of the communication system. Due to the disadvantages of wired communication in construction cost, scalability and free networking, this paper focuses on the application of wireless communication in distribution station area. In this paper, an intelligent distribution station area communication scheme based on WiMAX communication is proposed by comparing different wireless communication technologies. The scheme uses WiMAX wireless communication technology to upload the information of each concentrator or distribution transformer monitoring terminal in the intelligent distribution station area to the control center. The concentrator and the distribution transformer monitoring terminal communicate with the user equipment through low voltage PLC or RS485. This paper introduces in detail the network architecture of WiMAX communication network, the equipment of each layer, the hardware of base station system and the design and selection scheme of WiMAX user terminal device. In order to verify the communication performance of WiMAX, two different scale stations are built with the help of OPNET simulation software. The simulation results of the two models show that the communication delay of WiMAX is in milliseconds and has good network scalability. Compared with the traditional distribution area communication mode, WiMAX has enough bandwidth resources to support intelligent services such as video, and the transmission speed of WiMAX is much faster than that of carrier communication. Compared with 3G communication, WiMAX communication has unique advantages in the field of fixed access, and is more suitable for power system communication with weak terminal mobility.
【學(xué)位授予單位】:山東理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TM76;TM73
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