Abstract: To reasonably carry out the renovation of distribution automation and effectively improve the risk resistance ability of the power grid while ensuring investment economy, the type and site selection of distribution terminals and switches is studied for the improvement of power supply reliability. Firstly, the power supply restoration conditions of the load in the branch feeder with typical faults are analyzed. Then, the logical operators that are easy to understand and model are defined, and the outage time function of the load with different locations and types of automation equipment is obtained. Finally, the 0-1 quadratic programming model of the type and site selection of distribution terminals and switches, which is adaptive to different network architectures, is established. At the same time, the“two-remote”terminal, manual switch, protection switch,“three-remote”switch, and tie switch are precisely located. The test and analysis of the IEEE standard test feeder and the actual feeder with the mathematical solver prove that the proposed model is reasonable and effective in the type and site selection of terminals and switches. The distribution network renovation programming can be efficiently assisted, and the actual pain points of“what to install, where to install”in the process of the distribution automation renovation are preliminarily solved.