Consistency Test of Ion-Flow Density Measurement System Using an Improved Gray Relational Analysis Method

Li, Zhaoyang; Yuan, Haiwen; Cui, Yong; Lv, Jianxun; Zhao, Luxing; Ju, Yang

doi:10.1109/temc.2018.2869987

Cited by 7 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where is the radius of the conductors, is the relative air density, is the surface roughness, generally between 0.4 and 0.6, and is the correction factor of humidity. The corona inception electric field near the wires in the harsh weather is 12.82kV/cm by equation (12). According to the curve in figure 4(b), for the UHVDC transmission lines whose voltage is less than or equal to 1000kV, the radius can be selected within 280mm.…”

Section: Adaptability Of Detection Device In Uhv Electric Fieldsmentioning

confidence: 99%

“…Audible noise, especially its high-frequency components, will be greatly attenuated when it propagates over long distances in the medium [6]. Due to the existence of charge distribution areas with different concentrations near the transmission line, which is quite different from the air medium, the audio parameter characteristics of the audible noise during the propagation process will also change [12]. Even in the laboratory environment, due to the limitation of the insulation safety distance, the measuring point is still far away from the sound source [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on the Detection Technology of Audible Noise Sources of UHVDC Transmission Lines

Zhao

Yuan

et al. 2022

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

In order to directly and deeply study the law and characteristics of audible noise sources of UHVDC transmission lines, a method of detecting the sound intensity vector at the source position in the bundle conductor is proposed. First, the structure of the sound intensity detection device is designed, and the method for calculating the sound intensity vector is deduced based on this prototype. Then, the simulation of the electric field distribution on the surface of the device in the UHV extreme electric field environment is carried out. The change of the maximum electric field intensity and the influencing factors are obtained, which proves that the proposed detection device has the adaptability of the UHV electric field environment. Finally, the measurement error of the proposed detection device is analyzed. The results show that in the frequency range of 100∼5000Hz, the theoretical error of the sound intensity vector components and the total sound intensity level obtained by the measurement device in three directions are less than 2dB, which can meet requirements of sound intensity detection at the sound source.

show abstract

Section: Adaptability Of Detection Device In Uhv Electric Fieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on the Detection Technology of Audible Noise Sources of UHVDC Transmission Lines

Zhao

Yuan

et al. 2022

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

show abstract

“…With the large-scale implementations of HVDC transmission lines, the environmental impacts due to electromagnetic field have become a focus of public attention in the following technical parameters: electric field, ion current density, space charge density, radio interference, audible noise, etc. [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

WSN-Based Measurement of Ion-Current Density Under High-Voltage Direct Current Transmission Lines

et al. 2019

Self Cite

View full text Add to dashboard Cite

Ion-current density is a significant indicator of electromagnetic environment under high voltage direct current lines. To improve measurement accuracy and convenience, this paper concluded factors that affect measurement results and a wireless measurement method was proposed. Wilson plate kind of sensor was designed according to the IEEE standard. The ion current was measured and digitalized by the measurement device, and the signal was transmitted to the computer via wireless sensor networks. The data were analyzed and recorded by automatic measurement software. Finally, the measurement system was calibrated and some field tests had been performed, the results show that the measurement system possesses the merits of good accuracy, simple structure, convenient operation, and high stability and reliability. The maximum current measurement error is less than 3%. INDEX TERMS Electromagnetic environment, ion-current density measurement, wireless sensor network, HVDC transmission line.

show abstract

Analysis and Application of Influencing Factors on Fracturing Effect of Yingxi Shale Oil

Zhao,

Lei,

et al. 2023

Springer Series in Geomechanics and Geoengineering

View full text Add to dashboard Cite

Consistency Test of Ion-Flow Density Measurement System Using an Improved Gray Relational Analysis Method

Cited by 7 publications

References 30 publications

Research on the Detection Technology of Audible Noise Sources of UHVDC Transmission Lines

Research on the Detection Technology of Audible Noise Sources of UHVDC Transmission Lines

WSN-Based Measurement of Ion-Current Density Under High-Voltage Direct Current Transmission Lines

Analysis and Application of Influencing Factors on Fracturing Effect of Yingxi Shale Oil

Contact Info

Product

Resources

About