Application of Distribution Automation Feeder Terminal in System Information Acquisition Technology and Communication Protocol

Abstract

The use of advanced technology to realize automatic power distribution is an important technical tool to improve power supply reliability. Feeder automation is the key content of the realization of distribution automation, and it is also the most important link to solve the power quality and reliability of the distribution network. This article mainly studies the information acquisition technology and communication protocol based on the feeder terminal of distribution automation. In order to solve the problems of low data transmission efficiency, single function and improper technological progress in the early power distribution system, the operation requirements of the power distribution system were analyzed, and a new type of feeder automatic power distribution system was proposed. Aiming at the contradiction of the existing system communication protocol and the incompatibility of various manufacturers’ products, this article proposes an efficient, reliable, and universal communication protocol, which is formulated on the basis of IEC60870-5-104 and is suitable for use in the main data transmission between stations and terminals. This article develops a local communication protocol for error correction, and conducts various tests in the information collection terminal. The test research results show that the basic errors of current, active power and reactive power are all in the range of [-0.2%, 0.2%], and the variation of voltage, current and active power are all in the range of [-1%, 1%], it shows that the distribution automation feeder terminal meets the system’s technical requirements for the accuracy and speed of the terminal’s data collection and has strong anti-interference ability.