Capacitance Current Compensation Method for Cable-Overhead Hybrid Transmission Lines

2021 ◽  
pp. 925-939
Author(s):  
Gang Yao ◽  
Tonghua Wu ◽  
Yuping Zheng ◽  
Xianliang Teng ◽  
Feng Hong ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Compensation Method ◽  
Current Compensation ◽  
Hybrid Transmission ◽  
Capacitance Current

scholarly journals Performance evaluation of the travelling wave-based differential protection when applied on Hybrid Transmission Lines

2018 ◽  
Vol 2018 (15) ◽  
pp. 1114-1119 ◽  
Author(s):  
Felipe V. Lopes ◽  
Caio M.S. Ribeiro ◽  
João Paulo G. Ribeiro ◽  
Eduardo Jorge S. Leite
Keyword(s):  
Performance Evaluation ◽  
Transmission Lines ◽  
Travelling Wave ◽  
Differential Protection ◽  
Hybrid Transmission

Ultra-High Resistance Measurement Based on Offset Current Compensation

2013 ◽  
Vol 373-375 ◽  
pp. 856-860
Author(s):  
Xiao Jun Wang ◽  
Yong Jie Zhao ◽  
Jian Xue
Keyword(s):  
High Resistance ◽  
Current Measurement ◽  
Compensation Method ◽  
Measurement Process ◽  
Resistance Measurement ◽  
Time Varying ◽  
Current Compensation ◽  
Approximate Zero ◽  
On Line ◽  
Measurement Algorithm

An on-line offset current compensation method is proposed to improve ultra-high resistance (UHR) measurement more accurately and reliably. Iterative compensation algorithm is firstly adopted to generate compensation current by adjusting the compensation DAC to decrease the offset current to approximate zero, and then on-line offset current measurement algorithm is employed to ensure the time-varying offset current is always in an appropriate range. This algorithm can maintain a continuous unsaturated measurement process. Experiment results show that the uncertainty (k=2) is 1.4% for 1014Ω and 5.5% for 1015Ω under ±1000V based on the offset current compensation method proposed, which has been successfully implemented in a commercial UHR meter.

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