Design Of Low-voltage Distribution Network Monitoring Based On CDMA Network

Power as the basis of energy supply, whether for residential electricity or industrial use of electricity, increasingly dependent on electricity, our modern society has been inseparable from the electric. Therefore, the scale of power is expanding, and the stability of the power grid has gradually become the focus of people’s attention. The stability of the power grid and power grid equipment is complexity, diversity of electrical load, determine the special characteristics, but also essential affected by random factors such as fire, the aging condition. Once some bad factors, will cause damage to the power grid of the whole network stability, resulting in huge economic losses. In view of the reality of the situation, if there is a system for real-time monitoring of power grid is accurate and reliable, which can provide timely and reliable data on the power of employees, thus the efficient management of the electric power network. The distribution network power network as one of the most important, how to effectively protect the stability of the distribution network to the stability of the power network.In this thesis, the design is the subject of a CDMA network based on distribution network monitoring design, the program is the result of many practical and technical characteristics and other aspects to consider. One is the reality of the situation of the distribution network, the distribution network is generally installed in the distribution of the scattered location, at the same time, the number of low voltage power distribution equipment, in a relatively harsh environment and other related issues. Two is the way to send SMS delay early, single out the phenomenon, and the data communication is relatively more reliable and timely, and can send all kinds of parameters and pictures etc.. The three is the material cost of wired network and artificial cost problem. This set of CDMA network based on low voltage power distribution network monitoring network design scheme is composed of monitoring terminal, CDMA network management station is composed of three parts. The monitoring terminal is mainly composed of many modules, CDMA wireless communication module and data collection module. The power parameters used, display, storage and release by the front-end module is responsible for extracting. Data acquisition module the RS232 serial port and wireless communication module are connected through wireless communication module, is mainly responsible for sending data to the background management station. We have an overall and careful analysis, through the realization of three key technologies in the distribution network monitoring (namely front-end power parameters acquisition, high precision CDMA wireless network coverage and VPN Technology) to deal with no existing problems, according to the above analysis, we compared all kinds of intelligent terminal, intelligent monitoring terminal to make selected should have the following advantages:(1) the power parameters acquisition precision, with the power company procurement standards (2) with good CDMA wireless module, CDMA module has been online, avoid repeated connection request is not broken off grid network.