March 16 afternoon, commissioned by the Shandong Provincial Science and Technology Department, Shandong Electric Power Group Corporation presided over by the State Grid Shandong Electric Power Research Institute completed the "multi-epitope standard meter testing device" scientific and technological achievements appraisal meeting. Accreditation Committee agreed that the project developed 12-level 0.01-level three-phase power standard device to fill the gaps in the country, reached the international advanced level.
An appraisal committee composed of senior experts both inside and outside China such as Lu Zu-liang, chief researcher of China Institute of Metrology, and Cao Ruiji, a senior engineer of Shandong Institute of Metrology, listened to the project team's report, reviewed the technical materials provided and conducted questions and defenses. After research and discussion, the appraisal committee agreed that the technical information submitted by the project team is complete, uniform, standardized and in line with the appraisal requirements. The 12-level, 0.01-level three-phase energy standard device developed by this project has a reasonable structure design, adopts a variety of error-handling techniques, has electrical isolation and automatic safety protection measures, can simultaneously achieve 12 standard energy meter verification, and has passed China Metrology Science Institute of accreditation, has reached the design targets.
The use of high-power power supply, the current output power of up to 800W per phase; using DC negative feedback to solve the device test load for a long time, the power of the distortion, poor stability. Using hardware interrupt, fuzzy control and other technologies, adaptive different table high and low frequency pulse input was seized table error calculation. The device is equipped with a sub-standard watt-hour meter, which improves the reliability of mass transfer of the device. Appraisal Committee experts suggest that further promote the application of the project's research results.
The project developed a new 12-gauge standard power meter calibration device high efficiency, advanced features, easy to use. At the new Provincial Metrology Center, when undertaking high-volume, rapid and timely calibration of a standard watt-hour meter, the result will be the most used verification device and will better serve the verification of new provincial centers, cities and counties Work to provide support and protection, the results can be applied in the country, with high technical and economic benefits.
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