Electric vehicle charging metering instrument field calibration device
A technology for measuring instruments and on-site calibration, which can be used in measuring devices, measuring electrical variables, instruments, etc., and can solve problems such as damage to economic interests
Inactive Publication Date: 2015-11-11
HEILONGJIANG PROVINCIAL INST OF MEASUREMENT & VERIFICATION
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Problems solved by technology
[0005] Due to the particularity of electric vehicle metering instruments, the use of traditional electric energy metering calibration equipment can no longer fully meet the calibration requirements. Therefore, it is necessary to develop on-site calibration devices dedicated to electric vehicle metering instruments for periodic calibration work to ensure charging stations and The error of the metering instrument of the charging pile is within the allowable range, avoiding damage to the economic interests of both the power supply and the consumer. Therefore, this work has great social benefits. At the same time, the production and sales of the on-site calibration device dedicated to the electric vehicle meter Can bring huge economic benefits to R&D and production enterprises
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[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0027] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, a field verification device for electric vehicle charging metering instrument according to the present invention includes a high-accuracy voltage signal source, AC / DC voltage power amplifier 3, AC / DC current power amplifier 2, harmonic generator, ripple wave generator and electric energy precision measuring device, the high-accuracy voltage signal source is connected to the AC / DC voltage power amplifier and the AC / DC current power amplifier respectively, the harmonic generator and the ripple generator are connected with the AC / DC voltage power The amplifier is connected with the AC / DC current power amplifier, and the electric energy precision measuring device is connected with the AC / DC voltage power amplifier and the AC / DC current power amplifier. The DC ref...
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The invention relates to the technical field of test equipment, and specifically relates to an electric vehicle charging metering instrument field calibration device. The electric vehicle charging metering instrument field calibration device comprises a high-precision voltage signal source, an AC / DC voltage power amplifier, an AC / DC current power amplifier, a harmonic generator, a ripple wave generator, and a power precision measuring device. A time division technology is adopted for high-precision reference voltage, and chopper segmentation is carried out on high-precision reference voltage signals under control of a computer program. As the accuracy of time frequency measurement is very high and can reach above the level 10<-12>, the accuracy of the reference voltage can be 1-2ppm, and therefore, the accuracy of a program-controlled reference signal can reach 8-15ppm. Necessary technical guarantee is provided for completing the task indicators.
Description
technical field [0001] The invention relates to the field of testing technical equipment, in particular to an on-site calibration device for electric vehicle charging metering instruments. Background technique [0002] With the establishment of the new energy vehicle industry, one of the country's seven emerging pillar industries, electric vehicles are a means of transportation with broad prospects for future development in my country. Electric vehicle charging stations and charging piles provide energy supplies for the operation of electric vehicles. Important supporting infrastructure necessary for automobiles, these facilities are currently under a lot of planning and construction, for example, Beijing plans to build 256 charging stations and 42,000 charging piles during the "Twelfth Five-Year Plan" period, reaching a service radius equivalent to 5 kilometers of gas stations By 2015, Guangzhou will build 61 bus charging stations and over 80,000 charging piles. The State Gr...
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IPC IPC(8): G01R35/00
Inventor 张轶鹏周彤张昊明张健李浩张博刘缨
Owner HEILONGJIANG PROVINCIAL INST OF MEASUREMENT & VERIFICATION