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The Study of Corona Onset Criterion of HVDC Transmission Lines

Author: XiongGaoLin
Tutor: LuTieBing
School: North China Electric Power University
Course: Electromagnetic Field and Microwave Technology
Keywords: Optimize the charge simulation method Corona discharge model Breakdown guidelines Corona onset criterion Corona inception voltage Space charge
CLC: TM851
Type: Master's thesis
Year: 2011
Downloads: 79
Quote: 0
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Abstract


With the rapid development of UHV DC transmission , the transmission line has brought a series of electromagnetic environmental issues , corona discharge is one of the main causes . Charge simulation method and optimization methods to verify the effectiveness of the optimized charge simulation method to calculate the transmission lines the surface of the space field intensity distribution , and then analyzes the ACSR surface roughness coefficient . On the basis of corona discharge model focuses on the positive and negative corona discharge mechanism , the general expression of the corona discharge starting criterion , and with the size of the electronic disintegrating head electron number Q as corona from starting criterion of quantitative metrics . Next , discussion and calculation the critical electron disintegrating number Q value , with the classic formula compared to prove the effectiveness of the Q value selected . On the basis of the actual overhead stranded model , analyze and calculate the effects of space charge corona inception voltage line and from the halo field strength . Finally , the analysis of the different operating mode from the HVDC line halo conditions , the calculation of a single-stage bipolar and double circuit transmission line running way to split the wire corona inception voltage and from the halo field . The results of this research can provide a reference for the design and construction of high voltage direct current transmission line project .

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CLC: > Industrial Technology > Electrotechnical > High Voltage Engineering > High - voltage insulation technology > Corona impact on the insulation
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