Calibration of Electromagnetic Dot Sensor—Part 2: D-Dot Mode

Agry, Ahmad Al; Schill, Robert A.

doi:10.1109/jsen.2014.2324596

Cited by 18 publications

(6 citation statements)

References 5 publications

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“…In order to improve the sensor's ability to capture the surrounding electric field and avoid the interference caused by the introduction of grounding resistance [22,23,24,25,26], a Dual-Differential D-dot overvoltage sensor is designed. Figure 2 is the parameter and measurement principle of the Dual-Differential D-dot overvoltage sensor.…”

Section: Principle Of the Dual-differential D-dot Overvoltage Sensormentioning

confidence: 99%

Simulation, Design, and Test of a Dual-Differential D-Dot Overvoltage Sensor Based on the Field-Circuit Coupling Method

Zhao

Wang

Wang³

et al. 2019

Sensors

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Accurate measurement of overvoltage in power grids is of great significance to study the characteristics of overvoltage and design of insulation coordination. Based on the research of D-dot voltage sensor, we designed a Dual-Differential D-dot overvoltage sensor. In order to quantify the structural parameters of the sensor, improve the performance and measurement accuracy of the sensor. The Field-Circuit Coupling method was proposed to be used in the parameter design of D-dot overvoltage sensor. The joint simulation of space electromagnetic field model and equivalent circuit model of the Dual-Differential D-dot overvoltage sensor was established with the finite element simulation software Ansoft Maxwell and circuit simulation software Simplorer. Finally, the actual sensor was manufactured. A test platform was built to verify the steady-state and transient performance of the sensor. The results show that the Dual-Differential D-dot sensor has excellent steady-state and transient performance, the error of phase and amplitude are small, and the sensor can achieve the non-contact measurement of power transmission line. Simultaneously, the rationality of the Field-Circuit Coupling method was further verified.

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Section: Principle Of the Dual-differential D-dot Overvoltage Sensormentioning

confidence: 99%

Simulation, Design, and Test of a Dual-Differential D-Dot Overvoltage Sensor Based on the Field-Circuit Coupling Method

Zhao

Wang

Wang³

et al. 2019

Sensors

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show abstract

“…The electric field between the electrodes are kept at a very low level to ensure that the electric displacement vector components is continuous between the boundaries of the medium and the surface of the metal electrode [21]. Moreover, the maximum electric field is generated at a boundary surface of the medium between the air medium and the D-dot sensor.…”

Section: Simulation and Parameter Settingsmentioning

confidence: 99%

A Differential Self-Integration D-Dot Voltage Sensor and Experimental Research

2015

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An electronic voltage transformer with self-integral D-dot sensor is proposed for measuring high-voltage signals based on the principle of the D-dot measurement. The D-dot sensor can realize the potential detection of the conductor in a noncontact way according to the principle of electric field coupling. The application of the parallel and differential structure of multiple electrodes can operate sensor work in self-integration mode and achieve a good phase-frequency characteristic while the volume is smaller. Ansoft Maxwell was used to model and simulate the D-dot sensor. The optimization of sensor structure design parameters are obtained through finite-element simulation. The sensor has been produced preliminarily to carry out an error and transient performance test under the 2-kV voltage level. The test results show that the new sensor can meet the exact measurement requirements and have good transient characteristics.Index Terms-D-dot sensor, non-contact measurement, differential, self-integration. 1530-437X

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“…Moreover, they allow accurate measurement of voltage for the transmission lines. Regardless of applying non-contact optical sensors or non-contact electric field coupling sensors [ 8 , 9 , 10 , 11 , 12 ], the transmission line voltage can be obtained by inverse calculation with the exact measurement data of the electric field. The commonly used methods for inverse solution are the field-source inverse calculation problem and field-source numerical integration.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Electric Field Integral Voltage Measurement Method of Transmission Line Based on Error Transmission and Uncertainty Analysis

Fan

Guo

et al. 2021

Sensors

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Electric field numerical integration algorithms can realize the non-contact measurement of transmission line voltage effectively. Although there are many electric field numerical integration algorithms, lack of a comprehensive comparison of accuracy and stability among various algorithms results in difficulties in evaluating the measurement results of various algorithms. Therefore, this paper presents the G-L (Gauss–Legendre) algorithm, the I-G-L (improved Gauss–Legendre) algorithm, and the I-G-C (improved Gauss–Chebyshev) algorithm and proposes a unified error propagation model of the derived algorithms to assess the accuracy of each integration method by considering multiple error sources. Moreover, evaluation criteria for the uncertainty of transmission line voltage measurement are proposed to analyze the stability and reliability of these algorithms. A simulation model and experiment platform were then constructed to conduct error propagation and uncertainty analyses. The results show that the G-L algorithm had the highest accuracy and stability in the scheme with five integral nodes, for which the simulation error was 0.603% and the relative uncertainty was 2.130%. The I-G-L algorithm was more applicable due to the smaller number of integral nodes required, yet the algorithm was less stable in achieving the same accuracy as the G-L algorithm. In addition, the I-G-C algorithm was relatively less accurate and stable in voltage measurement.

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Calibration of Electromagnetic Dot Sensor—Part 2: D-Dot Mode

Cited by 18 publications

References 5 publications

Simulation, Design, and Test of a Dual-Differential D-Dot Overvoltage Sensor Based on the Field-Circuit Coupling Method

Simulation, Design, and Test of a Dual-Differential D-Dot Overvoltage Sensor Based on the Field-Circuit Coupling Method

A Differential Self-Integration D-Dot Voltage Sensor and Experimental Research

Evaluation of Electric Field Integral Voltage Measurement Method of Transmission Line Based on Error Transmission and Uncertainty Analysis

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