On-line monitoring device and method for voltage quality of electric power system
A power system and voltage quality technology, applied in the direction of measuring devices, measuring current/voltage, measuring electrical variables, etc., to achieve the effects of remote control, avoiding high power supply voltage, and overcoming common ground interference
Active Publication Date: 2011-01-26
STATE GRID CORP OF CHINA +2
View PDF0 Cites 16 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to address the shortcomings of the existing voltage quality monitoring technology, solve the two aspects of technology, the timing steady-state measurement of the voltage quality and the transient waveform recording of the overvoltage, and provide a voltage quality online monitoring system for each voltage level at the same time. Monitoring device and method
[0005] The online monitoring device for voltage quality of electric power system of the present invention solves the difference between overvoltage transient waveform and steady-state timing measurement of other voltage quality, and is currently an online monitoring device that can simultaneously measure voltage quality steady-state and transient data
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
[0030] The voltage signal of the device can be connected to the device of the present invention from the secondary side of the voltage transformer or the low-voltage arm of the voltage divider, and through the multi-channel voltage signal processing front end, the processed voltage signal is connected to the data acquisition card in the industrial computer through a special cable In the process, the acquisition software will collect and process the voltage signal according to the specific parameters, and record the over-voltage waveform or measure the steady-state voltage at regular intervals after reaching the set start-up condition or receiving the control command, and calculate and analyze the obtained data. storage.
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 on-line monitoring device and method for voltage quality of an electric power system. The voltage quality of various voltage grades from 10kV to 1000kV of the electric power system can be on-line monitored in real time; stable state data of deviation, harmonic waves, voltage fluctuation and flicker, three-phase unbalance, and the like of the voltage is fully monitored; and transient data of transient overvoltage and temporary overvoltage are simultaneously monitored. The on-line monitoring device can acquire voltages in various voltage grades in real time from multiple paths at high speed by adopting a multi-channel high-speed acquiring device, an automatic recording device, a storage device and a display voltage quality monitoring device, and simultaneously record various quality data of 32 voltages. The on-line monitoring device can automatically start the storage and the record of overvoltage temporary waveforms and calculate overvoltage multiple and temporary frequency. The recording time can reach 5s. The device adopts a linux multi-task operating system and the whole software adopts a Web / Brower manner.
Description
technical field [0001] The invention relates to an on-line monitoring device and method for voltage quality of a power system, in particular to a multi-channel, high-acquisition speed, long-time on-line monitoring device and method suitable for various voltage levels of 10kV to 1000kV in the power system. technical background [0002] In recent years, UHV DC transmission and the construction of clean energy such as wind power have been vigorously promoted by the state. The development of electrified railways and the extensive use of power electronic equipment and the application of power rectification and commutation technologies in various heavy industry sectors have generated a large number of harmonics injected into the grid. Distortion of the voltage waveform of the power system is caused. With the extensive use of these non-linear and impact loads, the voltage quality problem will become more prominent, and the impact and harm to the grid operation and sensitive electri...
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 Applications(China)
IPC IPC(8): G01R19/00
Inventor 韩冰司德亮张凯卞杨孟大伟温祥龙陈岳宋朝晖
Owner STATE GRID CORP OF CHINA
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap