Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Development of Transformation Ratio and Polarity Test Instrument for Capacitive Voltage Transformer

A voltage transformer, polarity test technology, applied in the direction of instruments, measuring electrical variables, electrical winding testing, etc., can solve the problems of cumbersome procedures, high risk, low efficiency, etc., to ensure the acquisition accuracy, high degree of automation, parameter reasonable effect

Active Publication Date: 2020-06-09
内蒙古送变电有限责任公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the transformation ratio of the capacitive voltage transformer, the high risk of the polarity test process, the cumbersome process and the low efficiency in the prior art, the present invention provides an efficient and safe dedicated capacitive voltage transformer transformation ratio, Apparatus for Polarity Test

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Development of Transformation Ratio and Polarity Test Instrument for Capacitive Voltage Transformer
  • Development of Transformation Ratio and Polarity Test Instrument for Capacitive Voltage Transformer
  • Development of Transformation Ratio and Polarity Test Instrument for Capacitive Voltage Transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] A capacitive voltage transformer transformation ratio and polarity test instrument includes a high-voltage output module, a voltage signal acquisition and calculation module. The high-voltage output module includes a primary-side step-up transformer and a high-voltage output voltage dividing resistor unit, which are connected in parallel.

[0025] The high-voltage output voltage dividing resistor unit includes a high-power high-voltage resistor R1 (100MΩ / 25W) and three high-precision wirewound resistors R2-R4 (200KΩ / 2W); wherein one end of R1 is connected to the capacitive voltage transformer to be measured The other end is connected in series with R2-R4 and leads to the high-voltage divider output end; the high-voltage divider output end is connected to the voltage signal acquisition and calculation module; the other end of R2-R4 is grounded, and R2, R3 and R4 are connected in parallel . The voltage signal acquisition and calculation module adopts a high-precision ADC...

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

No PUM Login to View More

Abstract

The invention provides an instrument for testing the transformation ratio and polarity of a capacitance type voltage transformer. The instrument comprises a high voltage output module and a voltage signal collection and calculation module; the high voltage output module comprises a primary step-up transformer and a high voltage output divider resistance unit in parallel connection, the high voltage output divider resistance unit comprises a large power high voltage resistor and three high precision wiring resistors, one end of the large power high voltage resistor is connected to the capacitance type voltage transformer, and the other end of the large power high voltage resistor is connected to the high precision wiring resistors in series; and the three high precision wiring resistors areconnected in parallel, one end of each high precision wiring resistor is grounded, and the other end of the high precision wiring resistor is connected in series with the large power high voltage resistor, and a high voltage dividing output end is led out. The instrument is researched to fill the blank of instrument specially used for transformation ratio and polarity test of the capacitance typevoltage transformer, and has the advantages of simple work, being safe and practical, high in working efficiency and anti-noise performance and low in cost.

Description

Technical field: [0001] The invention relates to the field of electric power testing, in particular to a capacitive voltage transformer transformation ratio and polarity testing instrument. Background technique: [0002] In recent years, with the continuous reform and development of my country's electric power industry and power grid technology, in order to ensure the fairness, justice and accuracy of electric energy measurement, my country's measurement law stipulates that on-site verification of transformers must be carried out regularly, so that capacitor voltage transformers can be used at the gate The role of metrology is growing. At present, the integration level of on-site calibration equipment for capacitive voltage transformers is not high. When the relative positions of the complete sets of equipment are not the same, the uncertainty of the distribution parameters is increased, resulting in the additional error introduced by the measurement system is very unstable,...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02G01R29/20G01R31/72
CPCG01R31/72G01R35/02
Inventor 武振龙于海王俊赵俊文卜玉纯鲁肇文
Owner 内蒙古送变电有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com