Energy Measurement in High Voltage Power Networks at Low Currents

2018 ◽  
Author(s):  
D. Izquierdo ◽  
A. Santos ◽  
M. Brehm ◽  
D. Slomovitz
Keyword(s):  
High Voltage ◽  
Energy Measurement ◽  
Power Networks

scholarly journals High-Voltage Solution in Radial Power Networks: Existence, Properties, and Equivalent Algorithms

2017 ◽  
Vol 1 (2) ◽  
pp. 322-327 ◽  
Author(s):  
Krishnamurthy Dvijotham ◽  
Enrique Mallada ◽  
John W. Simpson-Porco
Keyword(s):  
High Voltage ◽  
Power Networks

Overvoltage Effects on Ground Grid Systems of Single and Two Neighboring High Voltage Substations

2016 ◽  
Vol 6 (6) ◽  
pp. 2545
Author(s):  
Krung Luewattana ◽  
Aphibal Pruksanubal
Keyword(s):  
High Voltage ◽  
Distribution Systems ◽  
High Reliability ◽  
Fault Current ◽  
Power Networks ◽  
Grid Systems ◽  
Reliable Transmission ◽  
Ground Grid ◽  
Transmission And Distribution

<p><span style="font-family: Times New Roman;">The power networks<em> </em>with reliable transmission and distribution systems require high voltage substations with effective ground grid systems. Therefore, this study aimed to analyze the effects of overvoltage on ground grid systems within high voltage substations in two cases, including a single substation and the two neighboring substations, by using ATP/EMTP and ANSYS softwares. The simulations were performed to show both graphs and 3D results when the fault current flowed into the ground grids of substations at various positions. In case of the single high<em> </em>voltage substation, the overvoltage was highest when the fault current was injected at the corner of ground grid. However, in case of two neighboring high voltage substations, the levels of overvoltage were similar between that caused by injecting the fault current at the center and at the corner of ground grid. The simulation showed that overvoltage which occurring at the ground grid of high voltage substation A could permeate to the ground grid of nearby high voltage substation B, which nevertheless depending on the how the fault current was injected at different spots. The data from these simulations and analysis can be useful for future designs of ground grid systems with high reliability. </span></p>

A General Calibration Procedure for Measuring RF Voltages and Currents Applied to the EMC Analysis of Automotive High-Voltage Power Networks

2015 ◽  
Vol 57 (5) ◽  
pp. 915-925 ◽  
Author(s):  
Christian Zietz ◽  
Gunnar Armbrecht ◽  
Thomas Schmid ◽  
Michael Wollitzer ◽  
Bernd Geck
Keyword(s):  
High Voltage ◽  
Calibration Procedure ◽  
Power Networks

The Research of Novel High Voltage Electric Energy Measurement Apparatus Based on Three-Phase Four-Wire Virtual-Ground Theory

2013 ◽  
Vol 341-342 ◽  
pp. 1245-1249 ◽  
Author(s):  
Zhi Shou Zheng ◽  
Li Xin Wang ◽  
Xi Wu Chen ◽  
Wen Dong Deng ◽  
Jia Hai Zhang ◽  
...  
Keyword(s):  
High Voltage ◽  
Electric Energy ◽  
Measurement Instrument ◽  
Energy Measurement ◽  
Advanced Metering Infrastructure ◽  
Ground Theory ◽  
Three Phase ◽  
Advanced Metering ◽  
Site Test ◽  
Test Result

A novel apparatus is introduced in this paper used to measure high voltage electric energy based on three-phase four-wire virtual-ground theory. The virtual-ground design, Faraday shielding technique and Warner DC (Direct Current) self-supply method are integrated in this apparatus based on new I/V, V/V techniques to realize high accuracy, reliability and wide-linear range measuring. The effectiveness of the apparatus has been proved by in-house calibration and on-site test . The test result shows that it can be used in high voltage grid on-site calibration . Its measurement uncertainty can be limited to 0.1% under the condition of PF=1.0~0.8, and can reach 0.15% as PF=0.5. In summary, the apparatus discussed in this paper can be applied as high voltage electric energy measurement instrument to meet the requirement of online metrological verification and calibration. Furthermore, it is very useful for building the system of Advanced Metering Infrastructure (AMI) in smart grid.

Measurement of transient pulses on high-voltage automotive power networks

2010 ◽  
Author(s):  
Jens Hohloch ◽  
S. Tenbohlen ◽  
W. Kohler ◽  
Martin Aidam ◽  
Thomas Krauss
Keyword(s):  
High Voltage ◽  
Power Networks

scholarly journals Overvoltage Effects on Ground Grid Systems of Single and Two Neighboring High Voltage Substations

2016 ◽  
Vol 6 (6) ◽  
pp. 2545
Author(s):  
Krung Luewattana ◽  
Aphibal Pruksanubal
Keyword(s):  
High Voltage ◽  
Distribution Systems ◽  
High Reliability ◽  
Fault Current ◽  
Power Networks ◽  
Grid Systems ◽  
Reliable Transmission ◽  
Ground Grid ◽  
Transmission And Distribution

The power networks with reliable transmission and distribution systems require high voltage substations with effective ground grid systems. Therefore, this study aimed to analyze the effects of overvoltage on ground grid systems within high voltage substations in two cases, including a single substation and the two neighboring substations, by using ATP/EMTP and ANSYS softwares. The simulations were performed to show both graphs and 3D results when the fault current flowed into the ground grids of substations at various positions. In case of the single high voltage substation, the overvoltage was highest when the fault current was injected at the corner of ground grid. However, in case of two neighboring high voltage substations, the levels of overvoltage were similar between that caused by injecting the fault current at the center and at the corner of ground grid. The simulation showed that overvoltage which occurring at the ground grid of high voltage substation A could permeate to the ground grid of nearby high voltage substation B, which nevertheless depending on the how the fault current was injected at different spots. The data from these simulations and analysis can be useful for future designs of ground grid systems with high reliability.

Measurement Systems for High Voltage Transients in Power Networks

2021 ◽  
Author(s):  
Rogelio Sandler ◽  
Marcelo Brehm ◽  
Daniel Slomovitz ◽  
Alejandro Santos ◽  
Gonzalo Aristoy ◽  
...  
Keyword(s):  
High Voltage ◽  
Power Networks ◽  
Measurement Systems ◽  
Voltage Transients
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