The Research of Novel High Voltage Electric Energy Measurement Apparatus Based on Three-Phase Four-Wire Virtual-Ground Theory

Abstract:

A novel apparatus is introduced in this paper used to measure high voltage electric energy based on three-phase four-wire virtual-ground theory. The virtual-ground design, Faraday shielding technique and Warner DC (Direct Current) self-supply method are integrated in this apparatus based on new I/V, V/V techniques to realize high accuracy, reliability and wide-linear range measuring. The effectiveness of the apparatus has been proved by in-house calibration and on-site test . The test result shows that it can be used in high voltage grid on-site calibration . Its measurement uncertainty can be limited to 0.1% under the condition of PF=1.0~0.8, and can reach 0.15% as PF=0.5. In summary, the apparatus discussed in this paper can be applied as high voltage electric energy measurement instrument to meet the requirement of online metrological verification and calibration. Furthermore, it is very useful for building the system of Advanced Metering Infrastructure (AMI) in smart grid.

• Periodical: Applied Mechanics and Materials (Volumes 341-342)
• Pages: 1245-1249
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.341-342.1245
• Online since: July 2013
• Authors: Zhi Shou Zheng, Li Xin Wang, Xi Wu Chen, Wen Dong Deng, Jia Hai Zhang, Qing Chang Qu
• Keywords: High-Voltage Electric Energy Measurement, On-Line Calibration, Three-Phase Four-Wire Virtual-Ground High Voltage Electric Energy Measurement Apparatus

References

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DOI: 10.1109/icsai.2012.6223057