This paper combines methods such as decision-making theory and method, the risk early warning theory and mathematical statistics theory [1,2]. With case analysis, some risk assessment and risk early warning is studied systematically on the automatic low voltage current transformer verification system. First of all, on the basis of risk identification, a indicator evaluation system for the verification system is established. Combined with the structure of the low voltage current transformer verification system, the indicator system is built on both the overall system and various key units of the system. Then risk assessment of the system is conducted. The risk assessment includes state analysis on each indicator, setting up the indicator state probability model, setting the indicator weight; also a confidence level is analyzed. Thirdly, risk early warning is made. The risk early warning threshold is taken as the basis of the early warning, which guarantees the safety and steady operation of the system. Finally, some example verification is done upon the automatic low voltage current transformer verification system, which provides reference on risk assessment and early warning for some enterprises and institutions.
Design of a Multi-station Low-voltage Current Transformer Automatic Verification System
