Measurement and analysis of electromagnetic disturbance at the secondary side of electronic voltage transformer due to switching operations via a 6 kv switchgear

2017 ◽  
Author(s):  
Yan Wu ◽  
Yi-Fan Hu ◽  
Ri He ◽  
Chong-Qing Jiao
Keyword(s):  
Electromagnetic Disturbance ◽  
Voltage Transformer ◽  
Measurement And Analysis ◽  
Secondary Side

Design and Implementation of Synchronous Wireless On-Line Detection System of MOA Resistive Current in Electric Power System Based on GPS

2013 ◽  
Vol 676 ◽  
pp. 312-317
Author(s):  
Tao Cui ◽  
Yong Xing Cao ◽  
An Xu ◽  
Jue Long Li ◽  
Ge Hao Sheng
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Detection System ◽  
Electric Power System ◽  
Voltage Transformer ◽  
Lightning Strikes ◽  
Safety Risks ◽  
On Line ◽  
Design And Methods ◽  
Secondary Side

Metal oxide arresters (MOA) are important apparatus defending electric power systems against lightning strikes. The resistive current value of MOAs can reflect equipment status better. In conventional methods measuring resistive current of MOAs, wires need to be connected to the secondary side of voltage transformer during each test, and this brings great safety risks. A new wireless method is proposed to measure resistive current of MOAs. Based on GPS and wireless transmission module, wireless synchronous measurement of portable current detector and voltage monitor can be implemented. Fourier Sequence algorithm is applied to detect the resistive current of MOA. System compositions, design and methods of hardware implementation is focused on in this paper. Lab experiment and on-site testing results show that the method is satisfactory.

Portable System SKOP-8М for Measurement and Analysis of Acoustic Emission Signals

2010 ◽  
Vol 6 (3) ◽  
pp. 20-29 ◽  
Author(s):  
V.R. Skalsky ◽  
◽  
B.P. Klym ◽  
R.M. Plakhtiy ◽  
Ye.P. Pochapsky ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Measurement And Analysis ◽  
Portable System
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