The standard source of Tian Tao variable frequency power supply developed by Yinhe is an electric energy metering product developed by Hunan Yinhe Electric Co., Ltd. and National University of Defense Technology around the characteristics, application and measurement of variable frequency power supply, integrating the most advanced measurement and control theory in the world today, and conforming to the urgent needs of social application. After years of scientific research and practical exploration, it adopts the most advanced technology and technological means.
The birth of this product and many technical breakthroughs make it possible for China to establish a complete standard system of variable frequency electric quantity measurement, which is of epoch-making and milestone significance in the field of electric measurement.
This product can fully cover 0- 10 kV, 0-500 A, 5-400 Hz, and the phase angle is 0-359.99. Calibration and verification requirements of variable frequency electric quantity measuring instruments/devices within the scope.
product performance
The output frequency range is wide, especially low frequency, and the standard sine wave can be output in the range of 5~400Hz.
Wide output voltage and current range, strong load capacity. Maximum voltage 10KV and maximum current 500A, which can drive resistive or capacitive loads.
Digital synthesis technology has high output frequency accuracy and good stability, the step is 0.0 1Hz, and the lowest power factor can be adjusted to 0.05;
Special high-precision broadband power sensor is used as the reference standard, and the source output accuracy reaches above 0.05;
Using digital waveform generation and closed-loop control technology, advanced software algorithm and signal processing mode, the source output stability is extremely high.
Product advantage, independent innovation, ranking first in the world.
Years of experience, technical accumulation and keen market insight in the industry make Galaxy's exploration in the field of electrical measurement start earlier than others. At present, it has been successfully developed and put into use as the second generation high-power variable frequency electrical standard source product, with completely independent intellectual property rights, filling the gap at home and abroad and being in the international leading position.
At present, only the 6 100A/B series products of FLUKE Company in the United States can be used for the calibration of variable frequency electric quantity, but its voltage and current output range is narrow (maximum 1008V/80A) and its low frequency capability is insufficient (minimum 16Hz). The voltage and current output capability of domestic standard power supply products is similar to that of foreign products, but the output frequency range is limited to the power frequency (40-85Hz).
The following table compares the technical indexes of well-known products at home and abroad with those of Yinhe frequency conversion standard source:
Technical parameters related to serial number performance index
Tian Tao frequency conversion power supply standard source foreign authoritative products domestic well-known products
1 output frequency range 5-400.000 Hz 16 Hz -850 Hz 40-85 Hz.
2 distortion ≤ 0.5% ≤ 0.5% ≤ 0.5%
3 the output voltage range is 0-10kv0-1008v0-1000v.
4 The output current range is 0-500A 0-80A 0- 100A.
5 Voltage, current and power accuracy: 0.05% fs0.0 1% fs0.05% fs.
6 The voltage and current power stability is 0.01%fs/min0.01%fs/h0.01%fs/min.
7 Voltage and current phase shift range 0-359.99 0-359.99 0-359.99.
8 Efficiency ≥80% ≤70% ≤70%
From the comparative data, we can see that the standard source of Yinhe variable frequency power supply is equivalent to domestic famous products in terms of waveform quality, output accuracy and stability, and slightly inferior to foreign authoritative products. The Galaxy frequency conversion standard source far exceeds all domestic and foreign products in frequency conversion output capability, especially in low frequency output, high current and high voltage output capability. This characteristic is closest to the actual measurement requirements of current high-power variable-frequency speed regulating equipment and measuring instruments/devices of variable-frequency power supply, adapts to the development characteristics of new energy technology, and can more truly reproduce the actual application environment of variable-frequency power supply.
Based on the application, it provides technical support for the legal management of variable frequency measurement, and meets the most urgent demand for the traceability products of variable frequency electricity measurement.
2 1 century, the first problem to be solved for the sustained and healthy development of human civilization is the "energy crisis".
The most direct means to solve the energy crisis are: various efficient energy-saving measures and the wide application of new energy.
Ac variable frequency speed regulation is a high-tech that integrates the essence of power electronics, automatic control, microelectronics and electromechanical technology, and has attracted much attention since it came out. With its excellent speed regulation performance, remarkable energy-saving effect and wide applicability, it is praised by experts at home and abroad as the most ideal electric energy-saving transmission scheme in the world. Because of its excellent energy-saving effect, AC variable frequency speed regulation is more and more widely used in industrial field, and high-end electrical measuring instruments/devices with variable frequency electric quantity as the measuring object will be in the high-speed growth period. At the same time, the measurement problem of this kind of electric measuring instrument/device has also become an urgent problem that must be faced and solved.
In the application and promotion of various new energy technologies and the performance test or measurement of many important energy-saving equipment, a variable frequency power supply with output capacity of 10000V/ 1000A or even greater is needed, and its output frequency, current, voltage and phase can be adjusted independently. However, the current AC power supply can't meet this requirement basically, so it can't meet the needs of actual measurement and new product research and development in enterprises.
There are still many difficulties in the measurement of variable frequency electric quantity itself, such as non-sine wave output, low frequency and low power factor, which bring great difficulties to accurate measurement. In addition, the verification and calibration methods of variable frequency electricity at home and abroad are not complete, and the variable frequency electricity with high voltage, high current and high power is in an embarrassing situation of passive traceability and no standards/regulations for verification and calibration, so that variable frequency metering instruments are often nowhere to be found. Therefore, how to improve the measurement traceability system, how to standardize the measurement, calibration and detection of variable frequency electric quantity measuring equipment, and how to ensure the objectivity, accuracy and fairness of value transmission have become the key to the orderly, sustained and rapid development of variable frequency industry.
The calibration and verification scope covered by the national AC electric quantity measurement standards and standards is as follows:
1 GJB[2002]053 national standard AC current/below kloc-0/00khz100ma ~100a (25hz ~ 100kHz) 2gjb [2002] 054 national standard device AC voltage. Kloc-0/00V (10Hz 40Hz ~15000HZ4059 single-phase power frequency electric energy reference device 30V ~ 240V0.25a ~10A; Any 5(88) standard certificate number of power factor 162 standard device of digital watt-hour meter 40hz ~10khz; cosφ= 0 ~ 1； ( 1.5 ~ 6000)W； ( 15 ~ 600)V； (0. 1~ 10)A
At present, the market calls for the calibration and testing service of variable frequency electric quantity more and more loudly, and the demand for actual calibration and testing by local metrological departments is also more and more intense, but the country has not yet issued the relevant national standards, metrological verification regulations or calibration specifications for variable frequency electric quantity calibration. As can be seen from the data in the above table, the existing national standards and specifications can no longer meet the urgent needs of legal measurement such as calibration and verification of electric energy measuring instruments.
The timely birth of Yinhe frequency conversion power standard source fills the gaps in measurement methods and devices by expanding the measurement range and improving the measurement accuracy, and completely solves the demand problem from the double-layer perspective of technology and practical application. This product is located at the top of the pyramid of the value traceability chain of variable frequency electric quantity measuring instruments/devices. In order to expand the coverage of verification/calibration of energy measuring instruments, ensure that energy measuring instruments have the basis and ways of measurement traceability, establish the measurement standards, calibration devices and technical specifications of new energy measuring instruments as soon as possible, provide technical support for the legal management of variable frequency electricity measurement, and meet the most urgent needs of current variable frequency electricity measurement traceability products.
Economic and social benefits
At present, Galaxy is cooperating with Hunan Institute of Metrology and Testing to apply for the "National Standard and National Regulation" project for this product, establish the benchmark of variable frequency electricity measurement, and establish the first variable frequency electricity measurement station in China, which will make Hunan walk in the forefront of variable frequency electricity measurement in China and even the world, and take this opportunity to become the testing center for energy efficiency evaluation in China, and let the light of Hunan science and technology radiate all over China.
economic benefits
Due to the remarkable growth of the frequency conversion industry, its related industries will also have a broad market space. Frequency conversion power plays an important role in new energy development, energy saving and emission reduction. People's demand for frequency conversion electric energy metering is increasing, and the range of equipment and its measuring parameters is also getting wider and wider. Therefore, the demand for multi-parameter, wide-range and high-precision variable-frequency electric energy measurement and detection methods and equipment is increasing, and its economic benefits will surely show a rapid growth trend.
Judging from the current energy consumption of enterprises in China, the average energy consumption is 40% higher than the advanced level abroad. However, as the main industrial energy-saving inverter, the assembly rate in the main downstream is less than 5%. Market analysts believe that there is a broad market space for industrial energy conservation through various ways. Frequency conversion energy saving is the most basic application in industrial energy saving. In 2000, the market capacity of frequency conversion control can be extended as high as 654.38+700 billion. By adjusting the speed of AC motor (asynchronous motor or synchronous motor), frequency converter can improve the operation efficiency of motor transmission system and realize energy saving and consumption reduction. It is estimated that the annual market capacity of high, medium and low voltage inverters will be 30-40 billion during the Twelfth Five-Year Plan period.
According to national regulations, all large and medium-sized new energy enterprises, motor production enterprises, provincial metrology institutes and scientific research institutes should be equipped with this product. Based on this estimate, the market benefit of this product will be at least several hundred million after five years.
Social welfare
The successful development of this product has positively responded to the requirements of the National Medium and Long-term Scientific and Technological Development Plan (2006-2020) issued by the State Council and the ten major industrial adjustment and revitalization plans, and has seized the commanding heights of the world in the field of electrical measurement, taking another important step forward to complete the corporate mission of "serving the country with science and technology, prospering the great motherland and rejuvenating national brands ...".
This product is of great significance to improve the accuracy of frequency conversion electric energy measurement, strengthen electric energy management and carry out energy saving and emission reduction. At the same time, it is also the need to ensure the safe operation of equipment, correct the disorderly state of the industry and guide the healthy development of the industry, and it is also the need to build a "two-oriented society".