Abstract:A non-intrusive high-voltage load monitoring collector design and research is proposed for the problem that the existing means of electricity usage abnormality cannot be completely eliminated. The principle and hardware design of the high-voltage load monitoring collector for distribution network load abnormality monitoring are introduced, and the design analysis and simulation of the sampling and energy-taking CT are carried out. The structure of the high-voltage collector is optimized through the theoretical and simulation analysis of the air gap of the core of the sampling and energy-taking CT, so that the core can meet the output power requirements of the collector at low currents of the transmission line, and at the same time prevent the core from saturating prematurely at high currents of the transmission line, resulting in the core heating. Finally, field tests show that the high-voltage load collector has stable performance and high reliability in monitoring distribution network load abnormalities, does not need to modify meters or change lines during power outages, adopts non-interventional installation, can be far away from the user's view, and effectively avoids human damage, which can effectively monitor and curb the occurrence of various electricity theft behaviors and has broad application prospects in distribution network renovation and upgrading projects.