Availability of corona cage for predicting radio interference generated from HVDC transmission line

Nakano, Yoshiharu; Sunaga, Yoshitaka

doi:10.1109/61.57986

Cited by 23 publications

(9 citation statements)

References 5 publications

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“…The availability of the corona cage for predicting the radio interference and the audible noise generated from the HVDC transmission line was verified by Nakano and Sunaga [34,35] through experiments. It is based on the assumption that generation quantities of the radio interference, the audible noise and the corona current under different gap distances are the same by keeping the electric field on conductor surface the same in the presence of space charge, and the corona plasma region is neglected in calculating the electric field.…”

Section: Discussionmentioning

confidence: 99%

Ion Flow Effects on Negative Direct Current Corona in Air

Zheng

Zhang

et al. 2010

Plasma Chem Plasma Process

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Numerical simulations are presented for the ion flow effects on the negative direct current corona in air. One dimensional equivalent steady corona model containing the continuity equations for electrons and ions on the basis of Townsend theory coupled with Poisson's equation is applied. The conductor radius and the electric field intensity on conductor surface keep constant under the standard atmosphere condition in this paper. The results suggest that the space charges within the plasma region have no influence on the electric field distribution throughout the interelectrode gap, which is only governed by the ion flow. The influences of the gap distance and the corona current on the corona discharge within the plasma region have been investigated. If the voltage-current characteristics of the negative corona discharge are measured, the ion flow region and the plasma region can be investigated individually. Based on Kaptzov's hypothesis, the plasma region can be investigated solely.

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Section: Discussionmentioning

confidence: 99%

Ion Flow Effects on Negative Direct Current Corona in Air

Zheng

Zhang

et al. 2010

Plasma Chem Plasma Process

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“…Corona cage is an ideal tool to study the corona performance of the transmission lines. Its availability has been confirmed [2,3]. Put a corona cage in a manual environment room and test the corona performance of the line in the cage is a very economic way.…”

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confidence: 99%

Study of UHV DC corona performance in a mini corona cage

Wang

Fan³

et al. 2007

2007 Electrical Insulation Conference and Electrical Manufacturing Expo

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AbstrtICt-To research the effect of high altitude on corona performance of UHV DC transmission Hne, the corona inception voltage gradient of a copper Hne at different air pressure level from 101kPa to 61kPa was measured in a mini corona cage. The results have been compared with calculated results of Peek law and the corona inception voltage gradient correction factor of air pressure was presented.

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“…A great number of EMI detections have been made over the past 50 years, primarily in the AM broadcast [1,7,8]. Some measurements have also been made in the TV band.…”

Section: Introductionmentioning

confidence: 99%

“…As transmission voltages of High-Voltage Alternating Current (HVAC) as well as HVDC transmission lines increase, corona discharge becomes a design factor, not only because of corona losses and their impact on efficiency of power transmission, but also due to the electromagnetic interference (EMI) caused to broadcast [1][2][3][4][5]. Moreover, the corona-generated ions produced by high-voltage transmission lines may affect health by enhancing exposure to aerosol pollutants [6].…”

Section: Introductionmentioning

confidence: 99%

Remote Detection and Recognition of Electrostatic Discharge From HVDC Transmission Lines

Zhang¹,

Liu²,

Liu³

2014

PIER C

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Abstract-To remotely detect corona discharge from High-Voltage Direct Current (HVDC) transmission lines, a detecting system combining detecting platform and data progressing system is designed. Detecting platform is developed resorting to the principle of differential noise reduction, which can fulfill narrow-band detection breaking away interference from broadcasting and easily catch the electrostatic discharge signal. To get rid of interference from spark discharge, a data progressing system containing feature extractions, clustering and recognition technologies is developed. Clustering is realized by extracting five discharge features, including peak factor, form factor, skewness, kurtosis and mean square error. The unsupervised clustering Fuzzy C-Means (FCM) method is used to achieve fast separation for electrostatic discharges and provide training set for pattern recognition. Pattern recognition resorts to Support Vector Machine (SVM) method. For comparison, Back Propagation (BP) and Learning Vector Quantization (LVQ) approaches are taken to test the recognition ability. The results show that SVM recognizer with a recognition rate of 97.5% achieves higher performance than BP and LVQ methods. It can be concluded that the detecting system can be an interesting alternative for electrostatic discharge detection.

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Availability of corona cage for predicting radio interference generated from HVDC transmission line

Cited by 23 publications

References 5 publications

Ion Flow Effects on Negative Direct Current Corona in Air

Ion Flow Effects on Negative Direct Current Corona in Air

Study of UHV DC corona performance in a mini corona cage

Remote Detection and Recognition of Electrostatic Discharge From HVDC Transmission Lines

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