New electromagnetic sensing and high voltage loss

2022-07-24
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The new electromagnetic sensing and high-voltage loss measurement technology research projects of Shanghai Institute of metrology were launched, and the key special project of the national key R & D plan "research and application of common technologies for which the national basic quality experimental data can be saved, queried and transferred at any time" (hereinafter referred to as nqi special project) was recently launched. The projects of "Research on new electromagnetic sensing and high voltage loss measurement technology", "integration and application demonstration of space navigation and positioning nqi technology" and "Research on key technologies for measuring elongation traceability of communication and measuring equipment in complex environments" participated by Shanghai Institute of metrology were officially launched

research on new electromagnetic sensing and high voltage loss measurement technology "project mainly carries out research on low power factor high voltage loss measurement technology, development of power frequency capacitance loss reference measurement device, research on electronic transformer calibration technology, and Research on new constant weak magnetic sensing technology and reference device based on CS he indirect pump. Among them, Shanghai Institute of metrology is solely responsible for the third topic, "Research on Calibration Technology of electronic transformer", which will solve the problem of quantity value traceability of electronic transformer with digital output and analog small signal output in intelligent substation and intelligent power construction, establish the traceability chain between high-voltage digital proportion and analog proportion, and solve the international limitation that electronic transformer can only be calibrated under the conditions of laboratory frequency stabilization and fundamental wave, Meet the calibration requirements under field frequency conversion and harmonic conditions

the "nqi technology integration and application demonstration of space navigation and positioning" project is the only nqi special application demonstration project in 2017. Focusing on the important strategic needs of the country, it covers the whole chain quality basic technology integration research of measurement, standards and conformity assessment related to satellite navigation and positioning, provides all-round support to the industry, and is an important exploration for the application demonstration of the whole satellite navigation and positioning industry. The project plans to carry out satellite navigation remote time and frequency transmission and traceability application demonstration, optical fiber transmission service Beidou system, aerospace value traceability application demonstration, time and frequency comparison service second definition reproduction and coordination application demonstration, Beidou (GNSS) simulator and receiver calibration traceability application demonstration, satellite navigation positioning benchmark service technical standard application demonstration, and Beidou (GNSS) product inspection and certification research. In this project, Shanghai Institute of Metrology participated in the research on the subject of "satellite navigation remote time and frequency transmission and traceability application demonstration". It will design and implement the construction, experimental test verification and performance evaluation of Shanghai remote time traceability demonstration station, and carry out the research on the specific traceability requirements and Application methods of time standards in the industry, time application and traceability services

the project "Research on Key Technologies of measurement traceability of communication and measuring equipment in complex environment" mainly carries out research on key measurement technologies of wireless channel parameter impulse number, time-frequency domain parameters, electromagnetic field parameters and hazardous chemicals, radiation and nuclear emergency detection equipment in complex communication environment. Shanghai Institute of Metrology participated in the subject of "Research on time-frequency domain parameter measurement technology of complex communication signals". Based on the existing radio detection technologies such as laboratory RF communication and digital modulation, it will study the algorithm and technology based on the full waveform vector of the signal, extract the EVM parameters of complex modulated signals by obtaining the waveform vector of the complete cycle of the RF signal, and solve the problem that the existing hardware i/q technology cannot be traced to the national basic standards, Thus, the EVM parameters of complex modulated signals can be traced

nqi is the cornerstone of national quality development and the embodiment of comprehensive national strength and international competitiveness. Under the new normal, the CPC Central Committee and the State Council proposed to shift the foothold of promoting development to improving quality and efficiency. The promotion of nqi special project will certainly promote the improvement of China's quality level, promote the economic transformation, and Shenyang Economic and Technological Development Bureau has successively received multiple alarm type upgrades, so that China will become a quality power as soon as possible

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