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

GPS clock signal based high voltage capacitive apparatus insulated on-line monitoring system and its implement method

A GPS clock, capacitive equipment technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of inability to monitor dielectric loss factors, uncertain insulation parameter values, synchronous monitoring, etc., to facilitate expansion and maintenance, Satisfy the effect of online monitoring of insulation and reduce the amount of construction and maintenance

Active Publication Date: 2010-07-28
上海智光电力技术有限公司
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This system adopts the method of synchronous sampling based on the GPS clock, and uses the GPRS wireless service of mobile communication for wireless network communication, which can realize synchronous acquisition in different places and solve the problem of wireless communication between the tester and the central computer. However, there are still obvious shortcomings: since this method does not monitor the voltage signal applied to the measured capacitive device, it cannot monitor the real dielectric loss factor of the measured device, but can only monitor the relative change trend of its insulation parameters; Since the monitoring value is only the relative dielectric loss of the equipment, the relative dielectric loss of the same type and batch of equipment in the substation can only be compared horizontally to determine whether there is a fault in the equipment, but not for all different types of equipment in the substation. , different batches of capacitive equipment are monitored synchronously, and because the insulation parameter value of each monitoring is uncertain, it is impossible to make a longitudinal comparison of the insulation state of a specific capacitive equipment; moreover, because this method only belongs to portable measurement The system is only temporarily built on the site during measurement, rather than permanently installed on the substation site, so the system cannot continuously monitor the insulation level of the substation's internal equipment, so as to detect the insulation hazards of the capacitive equipment early. Therefore, this technology is difficult Meet the requirements for on-line monitoring of high-voltage electrical equipment insulation

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
  • GPS clock signal based high voltage capacitive apparatus insulated on-line monitoring system and its implement method
  • GPS clock signal based high voltage capacitive apparatus insulated on-line monitoring system and its implement method
  • GPS clock signal based high voltage capacitive apparatus insulated on-line monitoring system and its implement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] figure 1 Show the specific structure and principle of the present invention, by figure 1 It can be seen that this high-voltage capacitive equipment insulation online monitoring system based on GPS clock signals includes an on-site monitoring unit and a station-side control host. The on-site monitoring unit includes an on-site monitoring current unit FMU- C and the local monitoring voltage unit FMU-U that collects the voltage applied to the device, that is, the PT secondary side voltage signal. Multiple FMU-C units can be installed on a section of the bus, and only one FMU-U is required. The input of the local monitoring unit is the final screen current of the capacitive equipment under test and the voltage signal of the secondary side of the PT. The on-site monitoring unit includes a CPU, a wireless communication module, and a GPS clock receiving module, the CPU is connected to the wireless communication module and the GPS clock receiving module, and the wireless commu...

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 a GPS clock signal-based high voltage capacitive equipment insulation online monitoring system, including an on-site monitoring unit comprising a CPU, a wireless communication module which is 2.4GHz wireless communication module, a GPS clock receiving module, and a on-site monitoring current unit and a on-site monitoring voltage unit installed on the same bus line, and a station terminal control computer. An insulation online monitoring method includes that: the station terminal control computer sends synchronous remotely collection order to each on-site monitoring unitvia 2.4GHz wireless network; each on-site monitoring unit receives GPS clock signal and realizes synchronous remotely collection of each on-site monitoring unit on the booking time, comparing the uploaded information, calculates equivalent capacitor, end screen current and dielectric loss factor of high voltage capacitive equipment after the each on-site monitoring unit obtains end screen currentsignal with clock signal or sequence number and PT secondary side voltage signal.

Description

technical field [0001] The invention relates to the field of on-line monitoring of high-voltage electrical equipment insulation, in particular to an on-line monitoring system of high-voltage capacitive equipment insulation based on a GPS clock signal and an implementation method thereof. Background technique [0002] High-voltage electrical equipment such as capacitive current transformers, capacitive bushings, capacitive voltage transformers, coupling capacitors, and lightning arresters in power systems are affected by factors such as strong electric fields, mechanical forces, chemical corrosion, and the environment during long-term operation. The insulation performance will gradually age, which will lead to equipment failure and threaten the safe operation of the power system. The dielectric loss factor can reflect the insulation performance of the above-mentioned equipment. By monitoring the phase difference between the terminal current of the capaci...

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): G01R31/00G01R31/08
Inventor 刘勇赵正军吴翚杜剑光魏天魁
Owner 上海智光电力技术有限公司
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