光学电流互感器长期运行稳定性的试验研究.pdfVIP

光学电流互感器长期运行稳定性的试验研究.pdf

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36 6 Vol. 36 No. 6 2012 6 Power System Technology Jun. 2012 100006-0037-05 TM 45 A 470·4031 150001 Experimental Investigation on Optical Current Transducer’s Long-Term Operation Stability WANG Jiaying, GUO Zhizhong, ZHANG Guoqing, SHEN Yan, YU Wenbin (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, Heilongjiang Province, China) ABSTRACT: The conditions and methods for on-site [5-7] operation of optical current transducer (OCT) based on the principle of Faraday magneto-optical effect are researched, and [8] a digital metering system in which OCT is taken as the core is proposed. Through long-term on-site tests in which OCT and [9-12] traditional current transformer are operated in parallel, the experimental investigation on long-term operation stability of OCT is performed. Testing results show that the comprehensive error of the digital metering system composed of OCT is 1.013%; its operation is stable and the metering of electric energy is accurate and the obtained data are accurate and [13-15] reliable, thus the proposed digital metering system can meet the demand of measurement verification specified in Chineses National Standard SD 109-83 and GB/T16934-1997. KEY WORDS: optical current transducer (OCT) long-term (optical operation stability digital power metering system current transducerOCT)

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