Method for Eliminating Effects of Temperature and Other Phase Electric Fields on the Precision of Optical Voltage Transformers
An optical voltage and electric field sensor technology, which is applied in the direction of instruments, measuring electric variables, measuring devices, etc., can solve the problems that the stability and measurement accuracy of optical voltage transformers are difficult to meet the practical application and the impact of measurement accuracy, so as to improve stability, The effect of improving measurement accuracy and eliminating the influence of measurement accuracy
Active Publication Date: 2021-02-09
TSINGHUA UNIV +1
View PDF18 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the measurement accuracy of optical voltage transformers is seriously affected by temperature and other phase electric fields, making it difficult for optical voltage transformers with integrated optical electric field sensors to meet the practical requirements in terms of long-term operation stability and measurement accuracy
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0039] A method to eliminate the influence of external temperature and electric field on the measurement accuracy of optical voltage transformers, based on a gas-insulated real-time self-calibrating broadband high-voltage transformer, such as figure 1As shown, a gas-insulated real-time self-calibrating broadband high-voltage transformer includes a high-voltage terminal 1, a high-voltage electrode 2, a cylindrical shield 3, a composite hollow insulator 4, an insulating sealing plate 5, a reference voltage electrode 6, and an integrated optics An electric field sensor 7 , an insulating sleeve 8 , a g...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for eliminating the influence of temperature and other phase electric fields on the measurement accuracy of an optical voltage transformer, belonging to the technical field of optical voltage measurement, comprising: step 1, the electric field sensor of the optical voltage transformer is measuring the measured voltage U 1 At the same time, measure another set of reference voltage U that is different from the frequency of the measured voltage 2 , through the real-time calibration of the reference voltage measurement value to remove the influence of temperature on the measured voltage measurement value; Step 2, by introducing a set of power frequency or quasi-power frequency optical voltage transformer measurement data, using the three-phase decoupling method to eliminate the adjacent The interference of the phase voltage on the accuracy of the phase optical voltage transformer. The invention eliminates the influence of temperature and disturbance electric field on the measurement accuracy of the optical voltage transformer, and improves the measurement accuracy of the optical voltage transformer.
Description
technical field [0001] The invention relates to a method for eliminating the influence of external temperature and other phase electric fields on the measurement precision of an optical voltage transformer, belonging to the technical field of optical voltage measurement. Background technique [0002] With the increase of the capacity of my country's power system, the increase of operating voltage level and the increase of transmission distance, the monitoring, control and protection of the whole system must meet higher requirements. Traditional electromagnetic voltage transformers have high insulation requirements, ferromagnetic resonance, and narrow frequency bands, which cannot meet all the needs of power systems. [0003] With the continuous development of electronic technology and optoelectronic technology, optical voltage transformers gradually show great potential to replace traditional voltage transformers. The optical voltage transformer mainly uses the Pockels effe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 曾嵘庄池杰余浩汪海余占清王博
Owner TSINGHUA UNIV