Distribution network circuit fault positioning protection method based on transformer metering technology

The invention discloses a distribution network circuit fault positioning protection method based on a transformer metering technology. On the one hand, transformer metering data is applied to a distribution network automation system, collected transformer remote signaling and telemetering signals are analyzed, distribution network dispatchers are assisted to carry out fault positioning and load transfer work, specific transformer and line positions are rapidly positioned; on the other hand, power transmission between the transformer terminal and the power output terminal is connected through the self-healing pre-breaking device, so when the transformer terminal breaks down, the self-healing pre-breaking device can automatically break off electric energy transmission to the power output terminal, and when the transformer terminal returns to normal, the transfer of power is automatically recovered; therefore, not only is the power utilization safety of the line effectively protected, but also the work of distri