Accurate Voltage Measurement by the Quadrature Method

Chávez,; Jaeger,; Rahmatian,

doi:10.1109/mper.2002.4312591

Cited by 8 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the accuracy is easily affected by the distribution of measuring points and the environmental factors [22][23][24], so the new numerical analysis is needed to improve the efficiency of the field-source solution. The E-field integral algorithm is an advanced access to solve the problem bases on detecting the E-field information by the multi-node sensors and weighted sum [25]. Such a method has been applied in the optical voltage sensors.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Test of a Contactless Voltage Measurement Method for Overhead Lines Based on Reconstruction of Integral Node Parameters

Wang

Yan

et al. 2019

Sensors

View full text Add to dashboard Cite

To improve the stability and adaptability of the voltage measurement based on the E-field (electric field) integral method, in this paper we introduce a new method for the contactless voltage measurement of the overhead lines. The method adopts the node parameter reconstruction technology, which is based on the Gauss–Chebyshev algorithm. In order to achieve high-quality E-field detection at the reconstructed node position, we designed a novel D-dot sensor with parallel distributed electrodes. A Maxwell simulation model of multi-level voltages of the overhead lines was carried out to determine a comprehensive criterion of the reconstruction factors. The simulation employed a three-phase overhead line experiment platform to calculate and measure the distribution and the changing trend of the E-field. The deviations of the voltage measurement were reduced at a significantly low level within 0.4%. The result of the simulation demonstrates that the method optimizes sensor distribution by reconstructing node parameters, which enables the system to have high accuracy and reliability on the contactless voltage measurement of the overhead lines.

show abstract

Section: Introductionmentioning

confidence: 99%

Simulation and Test of a Contactless Voltage Measurement Method for Overhead Lines Based on Reconstruction of Integral Node Parameters

Wang

Yan

et al. 2019

Sensors

View full text Add to dashboard Cite

show abstract

“…This limits the compensation effect of multiple birefringences. Chavez et al proposed an integration method with multiple Pockels crystals to improve the performance of the two optical paths configuration [10]- [12].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Loop Gains to Optimize the Dynamic Performance of Optical Voltage Sensor Based on Pockels Effect

Cui

Wang

et al. 2015

J. Lightwave Technol.

View full text Add to dashboard Cite

A design method of loop gains is proposed for improving the fast dynamic tracking performance of optical voltage sensor (OVS) based on Pockels effect. The distribution principle of loop gains is investigated in theory according to the characteristics of closed-loop error of OVS. Based on the obtained distribution principle of loop gains, the hardware circuit and the control parameters of the controller are designed to improve the signal to noise ratio (SNR) of closed-loop error and the dynamic performance of OVS, respectively. The experimental results demonstrate that the system can achieve the high dynamic performance under the high detection precision: OVS can accurately track 13th harmonic with 1.57% measurement error and 4.24°phase error, and the long term steady accuracy of power frequency voltage is within ±0.1%. The experimental results validate the effectiveness of our new design method of loop gains.Index Terms-Dynamic performance, optical voltage sensor, signal process. 0733-8724

show abstract

“…The voltage transducer is based on a distributed electric field sensing architecture combined with resistive shielding to obtain highly accurate voltage measurement (see [IO]- [ 13). Each optical voltage transducer (OVT) uses three Pockels cell optical electric field sensors.…”

Section: A Optical Voltage Transducer (Ow)mentioning

confidence: 99%

SF/sub 6/-free 550 kV combined optical voltage and current transducer system

Rahmatian

Chavez

2003 IEEE PES Transmission and Distribution Conference and Exposition (IEEE Cat. No.03CH37495)

View full text Add to dashboard Cite

system in a HV substation is presented.Abstract-A three-phase optical voltage and current transducer system (NXVCT) for accurate metering of a 550 kV power transmission line is described. Extensive laboratory tests were performed on these units. Accuracy tests on the optical voltage transducers (OVTs) show compliance with IEC 0.1% class requirements with respect to linearity over the extended dynamic range of 10%-150% rated voltage, and with respect to accuracy over temperature, from -4OOC to +6OoC. The NXVCTs tests, including one-minute AC withstand at 800 kV, lightning impulse tests at 1800 kV, chopped impulses at 2070 kV, wet switching impulses at 1250 kV, and RIV tests. This NXVCT system is now installed in a 500 kV substation.

show abstract

Accurate Voltage Measurement by the Quadrature Method

Cited by 8 publications

References 0 publications

Simulation and Test of a Contactless Voltage Measurement Method for Overhead Lines Based on Reconstruction of Integral Node Parameters

Simulation and Test of a Contactless Voltage Measurement Method for Overhead Lines Based on Reconstruction of Integral Node Parameters

Analysis and Design of Loop Gains to Optimize the Dynamic Performance of Optical Voltage Sensor Based on Pockels Effect

SF/sub 6/-free 550 kV combined optical voltage and current transducer system

Contact Info

Product

Resources

About