scholarly journals Research on Three Phase Signal Separation Method and Device for Live Detection of Circuit Breaker Contact Ablation Degree

2021 ◽  
Vol 2005 (1) ◽  
pp. 012081
Author(s):  
Chao Wang ◽  
Jianlong Wang ◽  
Dong Sun ◽  
Sichen Dong ◽  
Jie Yang ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Separation Method ◽  
Signal Separation ◽  
Three Phase ◽  
Phase Signal

Three-phase modeling of 40.5-kV vacuum circuit breaker switching off shunt reactors and overvoltage suppression measure analysis

2021 ◽  
Vol 194 ◽  
pp. 107058
Author(s):  
Yun Geng ◽  
Jinlong Dong ◽  
Xinggui Chen ◽  
Luyang Zhang ◽  
Jing Yan ◽  
...  
Keyword(s):  
Circuit Breaker ◽  
Vacuum Circuit Breaker ◽  
Three Phase ◽  
Measure Analysis ◽  
Shunt Reactors

scholarly journals Dynamic and quasi-static signal separation method for bridges under moving loads based on long-gauge FBG strain monitoring

2019 ◽  
Vol 38 (2) ◽  
pp. 388-402
Author(s):  
Huaxi Lu ◽  
Zhicheng Gao ◽  
Bitao Wu ◽  
Zhenwei Zhou
Keyword(s):  
Health Monitoring ◽  
Strain Sensors ◽  
Separation Method ◽  
Signal Separation ◽  
Dynamic Monitoring ◽  
Static Strain ◽  
Strain Monitoring ◽  
Important Means ◽  
Vehicle Loads ◽  
Strain Signal

Structural health monitoring is an important means of obtaining the state information of bridges, and the extracted quasi-static strain signal can reflect the stress state of bridges directly. However, the strain signals acquired during the operation stage of bridges are dynamic, and the strain gauges used in the health monitoring system are short (no more than 10 cm), which means they are easily affected by small damage at the installation parts of bridges and thereby the monitoring signal abnormalities occur. A type of externally affixed long-gauge fiber strain gauge is used to monitor the health of bridges, and the dynamic and quasi-static signal separation method for long-gauge strain sensors is studied under different vehicle loads; at the same time, the dynamic monitoring performance of the long-gauge sensor is investigated in this paper. The quasi-static strain signal extracted from the dynamic macro-strain signal can be used to directly monitor the stress status of the bridge. The results show that the method proposed in this paper is feasible for extracting the quasi-static macro-strain from a dynamic long-gauge strain signal.

scholarly journals Instantaneous Circuit Breaker Settings for the Short-Circuit Protection of Three-Phase 480-, 600-, and 1040-V Trailing Cables

1981 ◽  
Vol IA-17 (4) ◽  
pp. 369-376 ◽  
Author(s):  
George Fesak ◽  
William S. Vilcheck ◽  
William J. Helfrich ◽  
David C. Deutsch
Keyword(s):  
Short Circuit ◽  
Circuit Breaker ◽  
Three Phase
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