Key technology projects based on component energy metering equipment quality improvement were identified

[ China Instrument Network Instrument Development ] On July 11, the "Key Technology for Quality Improvement of Component-Based Energy Metering Equipment" led by China Electric Power Research Institute Co., Ltd. passed the scientific and technological achievements appraisal organized by China Instrument and Control Society. The appraisal committee believes that the project has achieved a number of innovations in the measurement field and has reached the international leading level.

The energy metering device is the interactive interface between the smart grid and the user. The quality of the energy metering device is directly related to the fairness and fairness of the power transaction, the safe and reliable operation of the power grid and the high quality and efficiency of the power service, and the component quality is the basis of the quality of the energy metering equipment. .

The "Key Technology for Quality Improvement of Energy-Saving Equipment Based on Components" project lasted for 7 years, and proposed a reliability prediction model based on component-sensitive stress correction, and built a multi-level full-factor reliability probability design and fault control technology platform to solve The design defect has a low recognition rate and a high failure rate. The project also proposed the Robert edge detection image recognition method based on component type identification, process monitoring and installation position determination. The correct rate of comparison is 97%, the pass rate of sampling components is increased from 79.4% to 89.2%, and the annual failure of energy metering equipment The rate is reduced to 0.15%. The project has established a standard system for components for electric energy meters, covering 17 types of key components and 195 kinds of acceptance inspection methods, and established the first performance evaluation laboratory for measuring equipment components with CNAS/CMA qualification in the power industry. The detection efficiency has promoted the upgrade of component detection technology.

The project research results have been applied in 27 provincial power companies and hundreds of instrumentation and component manufacturing companies. Relying on the research results, it applied for 2 international patents, authorized 4 national invention patents, authorized 8 utility model patents, and edited 2 power industry standards and 16 enterprise standards of State Grid Corporation. The research results have effectively improved the product quality of electric energy metering equipment, significantly promoted the upgrading of electric energy metering equipment industry, produced good economic and social benefits, and has broad application prospects.

(Original title: The key technology for the quality improvement of energy-measuring equipment based on components in China Electric Power Research Institute has reached the international leading level)