J. Inst. Electrostat. Jpn.

, 32, 3 (2008) 129 136

N2 ࠟࠬਛߩ⃿㧙ᐔ᧼㔚ᭂ㑆ߩࡄ࡞ࠬ㔚࿶ᵄ㗡ߦ߅ߌࠆ⛘✼⎕უߦ෸߷ߔਃ㊀ὐߩᓇ㗀਄ ㊁ ⑲ ᮸㧖,1㧘⷏ Ꮉ ኡ ਯ㧖㧘ᴧ ↰ ሶ 〝㧖㧘ਛ ጊ ඳ ผ㧖㧔2007 ᐕ 3 ᦬ 14 ᣣฃઃ; 2008 ᐕ 5 ᦬ 9 ᣣฃℂ㧕Influence of Triple Junction on Breakdown for Sphere - Plane
Electrode Configuration in N2 Gas at Wave Front of Pulse Voltage
Hideki UENO,*,1 Hiroyuki NISHIKAWA,* Shiro NUMATA* and Hiroshi NAKAYAMA*(Received March 14, 2007; Accepted May 9, 2008)

Breakdown characteristics and influence of triple junction at wave front under Ps pulse voltage in N2 gas havebeen investigated for sphere-plane electrode configuration including solid dielectric plate. In the negative polarity, inspite of first corona generation around the triple junction and creeping corona extension, breakdown was observed in
the gap between the sphere electrode and the plane electrode. In addition, in the case of sphere electrode diameter
2r=4mm, breakdown voltage at the gap length g=4mm was close to that at g=3mm. These unique behaviors on
breakdown should be associated with corona from the triple junction and subsequently developed creeping discharge.
1.

ߪߓ߼ߦ

‛㧘⛘✼ࠟࠬߩਃ⠪߇ធߔࠆਃ㊀ὐߦ߅޿ߡ߽ዪㇱ⊛ߥ㔚⇇㔚ജᯏེߦ߅ߌࠆᕈ⢻ߩะ਄ߣ㐳ᦼߦࠊߚࠆା㗬ᕈߩ⏕㓸ਛ߇↢ߓ 4,5)㧘ߘࠇߦࠃࠅ⊒↢ߔࠆᴪ㕙᡼㔚߇ᯏེߩ⛘✼ߦ଻ߪ㔚ജߩ቟ቯଏ⛎ߦ⋥⚿ߒ㧘ㄭઍ␠ળߢߪਇนᰳߩ᧦ઙߣ

㊀ᄢߥᓇ㗀ࠍ෸߷ߔߎߣ߇⍮ࠄࠇߡ޿ࠆ㧚ߎߩਃ㊀ὐߦ߅ߌߥߞߡ޿ࠆ㧚ߘߩߚ߼ߩ㔚᳇⛘✼ߣା㗬ᕈ߇㊀ⷐߥ໧㗴ߣߥࠆ㔚⇇㓸ਛࠍㆱߌࠆᣇᴺߣߒߡ㧘ၒ߼ㄟߺ㔚ᭂ߿㔚ᭂࠍಳဳߞߡ޿ࠆ㧚ߎߩⷐ᳞ߩ߽ߣߢࠟࠬ⛘✼㐿㐽ⵝ⟎(GIS)ߪዊဳ࡮

⁁ߦߒߡ㔚⇇㓸ਛࠍ✭๺ߔࠆᣇᴺ߇⠨᩺ߐࠇߡ޿ࠆ㧚ߒ߆ߒ㧘シ㊂㧘㜞ା㗬ᕈ㧘଻቞ὐᬌߩ⋭ജൻߥߤߩ೑ὐࠍ᦭ߒ㧘⊒ዷ㜞࿶ዉ૕ߣធ࿾ዉ૕ߩ㊄ዻ㑆ߦ߅ߌࠆࠦࡠ࠽ߩ․ᕈߪ⹦⚦1)ࠍㆀߍߡ޿ࠆ 㧚GIS ߩ⛘✼ᇦ૕ߦߪ SF6 ࠟࠬ߇↪޿ࠄࠇߡߦ⺞ߴࠄࠇߡ޿ࠆ߇ 6-8)㧘ᯏེߩ⛘✼⸳⸘ߦ߅޿ߡ㊀ⷐߥਃ㊀޿ࠆ߇㧘᷷ቶലᨐࠟࠬߢ޽ࠆߎߣ߆ࠄ㧘ⅣႺ⽶⩄ࠍシᷫߔࠆὐߢߩ㔚⇇㓸ਛߣߘߎ߆ࠄ⊒↢ߔࠆࠦࡠ࠽ߩ․ᕈ߿ᴪ㕙᡼ߚ߼㧘ឃ಴ࠍ೥ᷫߔࠆᔅⷐ߇޽ࠆ㧚ߘߩߚ߼㧘SF6 ࠟࠬන⁛㔚ߣߩ㑐ଥߪ㧘޿߹ߛਇ᣿ߥὐ߽ᄙ޿㧚߹ߚ㧘⎇ⓥߩᄙߊ߇

㧘N2/SF6SF6 ࠟࠬࠍ↪޿ߡ߅ࠅ 9-12)㧘
N2 ࠟࠬ╬ࠍ↪޿ߚ⎇ⓥߪዋߥ޿㧚ᷙวࠟࠬ㧘㜞᳇࿶ N2 ࠟࠬߥߤ⒳‫߇ࠬࠟ✼⛘ߩޘ‬ᬌ⸛ߐࠇߡ

એ਄ߩࠃ߁ߦ㧘ਃ㊀ὐ߆ࠄ⊒↢ߔࠆࠦࡠ࠽ߩ᜼േࠍ᣿ࠄ߆

ߦઍࠊࠆᣂߒ޿⛘✼ᣇᑼߩ⏕┙߇ᦸ߹ࠇߡ߅ࠅ

2,3)

޿ࠆ㧚

ߦߒ㧘⊒↢ߒߚࠦࡠ࠽ߣ⛘✼⎕უߣߩ㑐ଥࠍᬌ⸛ߔࠆߎߣߪ

߹ߚ㧘ࠟࠬ⛘✼ᯏེߥߤߩౝㇱߢߪ㧘㜞࿶ዉ૕ࠍᡰᜬߔࠆ

㊀ⷐߢ޽ࠆ㧚╩⠪ࠄ߽ㆊ㔚࿶ᤨߦ߅ߌࠆ㔚ജᯏེߩ⛘✼ᕈ⢻⛘✼ࠬࡍ࡯ࠨㇱಽ߿ዉ૕߇ࡕ࡯࡞࠼ߐࠇߚㇱಽ╬㧘ࠟࠬߣ࿕ะ਄ߦ⾗ߔࠆߎߣࠍ⋡⊛ߦ㧘ࡄ࡞ࠬ㔚࿶ᵄ㗡ㇱࠍ↪޿ߡਃ㊀3)૕⛘✼‛ߦࠃࠆⶄว⛘✼᭴ᚑߣߥߞߡ޿ࠆ 㧚ߎߩㇱಽߢߪ㧘ὐߦࠃࠆࠦࡠ࠽߿ߘߩࠦࡠ࠽߇ᴪ㕙᡼㔚ߦਈ߃ࠆᓇ㗀ߦߟ㜞࿶ዉ૕ߣ⛘✼‛ㇱಽߦᓸዊߥࠡࡖ࠶ࡊ߇↢ߓ㧘⛘✼‛ߣࠟ޿ߡᬌ⸛ࠍⴕߞߡ޿ࠆ 13-17)㧚

ࠬߩ⺃㔚₸ߩ㆑޿߆ࠄዪㇱ⊛ߦ㔚⇇㓸ਛ߇⿠ߎࠆน⢻ᕈ߇ᧄ⎇ⓥߢߪ㧘ࡄ࡞ࠬ㔚࿶ශടᤨߩ N2 ࠟࠬਛߢߩ⃿㧙ᐔ᧼޽ࠆ㧚ߎߩዪㇱ⊛ߥ㔚⇇㓸ਛߦࠃߞߡ↢ߓߚࠦࡠ࠽߇ᯏེߩ

㔚ᭂ㑆ߩ⛘✼⎕უߦ߅ߌࠆਃ㊀ὐઃㄭ߆ࠄ↢ߓࠆࠦࡠ࠽ߩ

⛘✼ᕈ⢻ߦᓇ㗀ࠍ෸߷ߔߎߣ߇޽ࠆ㧚․ߦ㧘ዉ૕㧘࿕૕⛘✼ᓇ㗀ࠍᬌ⸛ߔࠆߚ߼㧘⃿㧙ᐔ᧼㔚ᭂߦ⛘✼‛ߢ޽ࠆ⎲⎜㉄ࠟ࡜ࠬࠍធ⸅ߐߖਃ㊀ὐࠍᒻᚑߒߚ㔚ᭂ♽ࠍ↪޿ߡ㧘⎕უ㔚࿶㧘ࠠ࡯ࡢ࡯࠼㧦⛘✼⎕უ㧘ਃ㊀ὐ㧘ࠦࡠ࠽㧘N2 ࠟࠬ* ౓ᐶ⋵┙ᄢቇᄢቇ㒮Ꮏቇ⎇ⓥ⑼㧔671-2280 ᆢ〝Ꮢᦠ౮ 2167㧕
Graduate School of Engineering, University of Hyogo, 2167
Shosha, Himeji 671-2280, Japan1
ueno@eng.u-hyogo.ac.jp⎕უ⚻〝ߣࠦࡠ࠽ߩㅴዷ᜼േࠍ⺞ߴߚ㧚
2.

ታ㛎ᣇᴺ

ᧄታ㛎ߦ߅ߌࠆ㔚ᭂ᭴ᚑࠍ࿑ 1 ߦ␜ߔ㧚⃿㔚ᭂߦߪ⋥ᓘ

130 (34)

32

3

2008

2r=4mm ߩࠬ࠴࡯࡞ࡏ࡯࡞ࠍ૶↪ߒߚ㧚߹ߚ㧘Ყセߩߚ߼ߦᄌൻߒߚ㧚g=4mm ߢߪ⎕უ㔚࿶ߩᐔဋ୯ߪ 24kV ߢ޽ࠅ㧘ߦ⋥ᓘ 2r=3, 10mm ߩ߽ߩ߽↪޿ߚ㧚ᐔ᧼㔚ᭂߦߪᄢ߈ߐ

g=3mm ߩ႐วߦᲧߴߡࠊߕ߆ߦૐਅߒߚ߇㧘߫ࠄߟ߈ࠍ⠨30×30mm2㧘ෘߐ 5mm ߩ㤛㌃᧼ࠍ↪޿ߚ㧚᏷ 15mm㧘ෘߐᘦߔࠆߣᏅߪߥ޿߽ߩߣ⠨߃ࠄࠇࠆ㧚߹ߚ㧘
g=5mm ߢ⚂ 28kV

1mm ߩ⎲⎜㉄ࠟ࡜ࠬ(⴫㕙ᛶ᛫₸ Us=1011ȍ㧘૕Ⓧᛶ᛫₸ߣౣ߮⎕უ㔚࿶ߩ਄᣹߇⷗ࠄࠇߚ㧚g=3, 4, 5mm ߩ޿ߕࠇߦ

Uv=1012ȍ㨯m㧘Ყ⺃㔚₸Hr=7.0)ࠍ⃿㔚ᭂߦធ⸅ߐߖ㧘ਃ㊀ὐ߅޿ߡ߽ᴪ㕙⎕უߣߥߞߚ㧚ࠍᒻᚑߒߚ㧚߹ߚ㧘ࠟ࡜ࠬਅ┵ߪᐔ᧼㔚ᭂߣធߒߡ޿ࠆ㧚৻ᣇ㧘⽶ᭂᕈߦ߅޿ߡߪ㧘ࠡࡖ࠶ࡊ㐳 g=1~3mm ߢߪࠡࡖ⃿వ┵߆ࠄᐔ᧼㔚ᭂ߹ߢߩ〒㔌ࠍࠡࡖ࠶ࡊ㐳 g ߣߒ㧘࠶ࡊ㐳ߩჇടߦ઻޿⎕უ㔚࿶ߪ਄᣹ߒ㧘g=3mm ߢᐔဋ⚂g=1~5mm ߩ▸࿐ߢᄌൻߐߖߚ㧚ߎߩ㔚ᭂ♽ࠍ㤛㌃⵾ኈེ

26kV ߣߥߞߚ㧚߹ߚ㧘
g=4mm ߢߪ⎕უ㔚࿶ߩᐔဋߪ⚂ 26.5kV

3

3(⚂ 3×10 cm )ౝߦ⸳⟎ߒ㧘N2 ࠟࠬࠍ 0.3MPa ኽ౉ߒߚ㧚ශߣ g=3mm ߣ߶ߣࠎߤᄌൻߪ⷗ࠄࠇߥ߆ߞߚ߇㧘g=5mm ߢౣട㔚࿶ߦߪᵄ㗡㐳 Tf=1.5Ps㧘ᵄ㜞୯ 35kV ߩࡄ࡞ࠬ㔚࿶ࠍ߮⎕უ㔚࿶ߪ਄᣹ߒߚ㧚ߒ߆ߒ㧘⽶ᭂᕈߦ߅ߌࠆ⎕უ⚻〝ߪ૶↪ߒߚ㧚⛘✼⎕უ㔚࿶ߪߔߴߡᵄ㗡ㇱߢ⛘✼⎕უߐߖߚ޿ߕࠇߩࠡࡖ࠶ࡊ㐳ߦ߅޿ߡ߽⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ޽ࠅ㧘ᱜߣ߈ߩ⍍ᤨ୯ߢ޽ࠅ㧘᷹ቯߪห৻᧦ઙߢ 20 ࿁ⴕߞߚ㧚㔚ᭂᕈߩ g=3mm એ਄ߢ⷗ࠄࠇߚᴪ㕙⎕უߪ᷹ⷰߐࠇߥ߆ߞߚ㧚࿶ᵄᒻߪ㜞㔚࿶ࡊࡠ࡯ࡉ(HV-P30㧘ጤፒㅢାᯏ)ࠍ੺ߒߡ࠺

SF6 ࠍ฽߻ࠟࠬਛ㧔SF6 ᷙว₸ 3~100㧑㧕ߦ߅޿ߡߪ㧘ᱜ⽶ࠖࠫ࠲࡞ࠝࠪࡠࠬࠦ࡯ࡊ(DL1540㧘ᮮᴡ㔚ᯏ)ߢ᷹ቯߒߚ㧚޿ߕࠇߩᭂᕈߦ߅޿ߡ߽ g=2mm એ਄ߢߪߔߴߡᴪ㕙ߢߩ⎕߹ߚ㧘ࠦࡠ࠽߅ࠃ߮⎕უ᜼േߪࠗࡦ࠹ࡦࠪࡈࠔࠗࠕઃ߈㜞უߢᭂᕈߦࠃࠆ⎕უ⚻〝ߩ⋧㆑ߪ⷗ࠄࠇߡ޿ߥ޿ 17)㧚߹ߚ㧘ᗵᐲࠞࡔ࡜(ICCD) (C4346㧘ᵿ᧻ࡎ࠻࠾ࠢࠬ) ߣ㜞ㅦ࠺ࠫ࠲㘃ૃߩ㔚ᭂ♽ߦ߅޿ߡ߽ SF6 ࠟࠬਛߢߪᱜ⽶ਔᭂᕈߣ߽ߦਃ࡞ ࡈ ࡟ ࡯ ࡒ ࡦ ࠣ ࠞ ࡔ ࡜ (IMACON468, HADLAND
PHOTONICS)ࠍ↪޿ߡ᷹ⷰߒߚ㧚ߥ߅㧘⌀ⓨߩ⺃㔚₸ࠍH0㧘⛘✼૕ߩᲧ⺃㔚₸ࠍHr㧘⛘✼૕ߩ૕Ⓧᛶ᛫₸ࠍUv ߣߔࠇ߫㧘⛘✼૕ߩ⴫㕙ၸⓍ㔚⩄ᷫ⴮ߩᤨቯᢙߪH0 Hr Uv ߣ⴫ߐࠇ 18)㧘⎲⎜㉄ࠟ࡜ࠬߩ㔚⩄ᷫ⴮ᤨ
ቯᢙߪ 67 ⑽ߣ⷗Ⓧ߽ࠄࠇࠆ㧚ߒߚ߇ߞߡ㧘ᵄ㗡ㇱ(Tf=1.5Ps)ߒ߆ߒ㧘㊀ὐ߆ࠄߩᴪ㕙⎕უߣߥࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ 11,12)㧚
੹࿁ߩ N2 ࠟࠬ 0.3MPa ߦ߅޿ߡ㧘g=3mm એ਄ߢߪᭂᕈߦࠃ
ࠅ⎕უ⚻〝߇⇣ߥࠆ⚿ᨐ߇ᓧࠄࠇߚ㧚SF6 ࠟࠬਛߣ N2 ࠟࠬਛߢߩ⎕უ⚻〝ߩ⋧㆑ߪ㧘SF6 ߩ㔚ሶઃ⌕ߦࠃߞߡ㧘⃿ਅ┵߆ࠄߩ⎕უߦነਈߔࠆ㔚ሶߩሽ࿷⏕₸߿ਃ㊀ὐㄭற߆ࠄߩࠦ
ࡠ࠽╬߆ࠄߩ㔚ሶଏ⛎ߩ⁁ᘒ߇ᄌൻߔࠆߚ߼ߣᕁࠊࠇࠆ㧚ߢߩ㔚⩄ᷫ⴮߇ήⷞߢ߈ࠆ㧚ߔߥࠊߜ㧘ᵄ㗡ㇱߩᤨ㑆ߢߪࠦࡠ࠽ߦࠃࠆ⫾Ⓧ㔚⩄߇᡼㔚ߩㅴዷߦ෸߷ߔᓇ㗀ߪ଻ᜬߐࠇࠆ㧚৻ᣇ㧘㔚࿶ශട 60 ⑽ᓟߦߪ⴫㕙ᱷ⇐㔚૏ߪᬌ಴ߐࠇߕ㧘ࡄ࡞ࠬ㔚࿶ߩශട㑆㓒ࠍ 60 ⑽એ਄ߣߔࠆߎߣߢ
೨⺖㔚ߦࠃࠆᱷ⇐㔚⩄ߩᓇ㗀ߪㆱߌࠄࠇࠆ㧚

3.2⎕უ㔚࿶㧘⎕უ⚻〝ߦኻߔࠆ⃿㔚ᭂ⋥ᓘߩᓇ㗀⃿ਅ┵ߩ㔚⇇ߥࠄ߮ߦਃ㊀ὐߦ߅ߌࠆ㔚⇇㓸ਛߩ⁁ᘒ߇⇣ߥࠆ᧦ઙਅߢ⛘✼⎕უ㔚࿶߿⎕უ⚻〝߇ߤߩࠃ߁ߦᄌൻ
ߔࠆ߆ࠍ⺞ߴࠆߚ߼㧘⇣ߥࠆ⋥ᓘߩ⃿㔚ᭂ(2r=3, 10mm)ࠍ↪
޿ߡᬌ⸛ࠍⴕߞߚ㧚

3.1

ታ㛎⚿ᨐ

࿑ 3(a)ߦᱜᭂᕈߩ⎕უ㔚࿶ߩᐔဋ୯ߣ⎕უ⚻〝ߩࠡࡖ࠶ࡊ

⎕უ㔚࿶ߩࠡࡖ࠶ࡊ㐳ଐሽᕈ⎕უ㔚࿶ߩࠡࡖ࠶ࡊ㐳ଐሽᕈࠍ࿑ 2 ߦ␜ߔ㧚ᱜᭂᕈߩ႐ว㧘ࠡࡖ࠶ࡊ㐳 g=1, 2mm ߢߪ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ⎕უ߇↢ߓ㧘⎕უ㔚࿶ߩᐔဋ୯ߪ g=1mm ߢ⚂ 16kV㧘g=2mm ߢ⚂ 22kV ߣߥߞߚ㧚߹ߚ㧘g=3mm ߢߪ⎕უ㔚࿶ߩᐔဋ୯ߪ 24.5kV ߣߐࠄߦ਄᣹ߒߚ߇㧘ߘߩ⎕უ⚻〝߇⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߆ࠄᴪ㕙

Glass
Sphere Electrode(Diameter 2r )Gap LengthgdCreeping DistancePlane Electrode࿑ 1 㔚ᭂ᭴ᚑ࿑
Fig. 1 Electrode configuration.

㐳 g ߦࠃࠆᄌൻࠍ␜ߒߚ㧚ߥ߅㧘࿑ਛߩ㤥Ⴃࠅࠪࡦࡏ࡞ߪ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢߩ⎕უࠍ㧘⊕ᛮ߈ߪᴪ㕙ߢߩ⎕უࠍ⴫ߒߡ
޿ࠆ㧚߹ߚ㧘Ყセߩߚ߼ߦ 2r=4mm ߩ႐ว߽␜ߒߚ㧚
40

Breakdown Voltage VB (kV)3.

N2:0.3MPa
2 r =4mm30

Negative
Positive

20

10

0
0

Positive
Negative
Sphere–Plane Path
Creeping Path

1

2
3
4
5
Gap Length g (mm)

࿑ 2 ⎕უ㔚࿶ߩࠡࡖ࠶ࡊ㐳ଐሽᕈ㧔2r=4mm㧕
Fig.2 Gap length dependence of breakdown voltage.(2r=4mm)

N2

131 (35)⃿㔚ᭂ⋥ᓘ 2r=4mm ߩ႐ว㧘ࠡࡖ࠶ࡊ㐳 g=2mm ߣ g=3mm

৻⥸ߦࡄ࡞ࠬ㔚࿶ᵄ㗡ߢ↢ߓߚࠦࡠ࠽ߪ㧘ߘࠇ߇૞ࠅ಴

ߩ㑆ߢ⎕უ⚻〝߇⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߆ࠄᴪ㕙ߦᄌൻߒߚ߇㧘ߔⓨ㑆㔚⩄߿⫾Ⓧ㔚⩄߇㧘ߘߩᓟߩ㔚࿶਄᣹ߦࠃࠆࠦࡠ࠽

⃿㔚ᭂ⋥ᓘ 2r=3mm ߦ߅޿ߡ߽㧘ࠡࡖ࠶ࡊ㐳 g=1mm ߣߩㅴዷߦᓇ㗀ࠍ෸߷ߔ㧚ᧄ⎇ⓥߦ߅޿ߡ߽ห᭽ߩߎߣ߇⠨g=2mm ߩ㑆ߢ⎕უ⚻〝߇⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߆ࠄᴪ㕙ߣߥߞ߃ࠄࠇࠆ㧚ߘߎߢ㧘਄⸥ߩ⃻⽎߇⃻ࠇࠆේ࿃ࠍᬌ⸛ߔࠆߚ

ߚ㧚৻ᣇ㧘⃿㔚ᭂ⋥ᓘ 2r=10mm ߩ႐ว㧘⎕უ㔚࿶ߩ᷹ቯ߇

߼㧘߹ߕࠦࡠ࠽ߩ⊒↢ߣᲧセ⊛ૐ޿ශട㔚࿶㗔ၞߢߩࠦࡠ

น⢻ߢ޽ߞߚ g=1~3mm ߩ▸࿐ߢߪ޿ߕࠇ߽⃿㧙ᐔ᧼ࠡࡖ࠶

࠽ߩ᜼േࠍ㧘⃿㔚ᭂ⋥ᓘ 2r=4mm ߩࠡࡖ࠶ࡊ㐳 g=3~4mm

ࡊߢߩ⎕უߣߥߞߚ㧚ߩ᧦ઙߦߟ޿ߡ⺞ߴߚ㧚ߥ߅㧘ࠦࡠ࠽㐿ᆎ߅ࠃ߮㐿ᆎ⋥ᓟ⽶ᭂᕈߩ⚿ᨐࠍ࿑ 3(b)ߦ␜ߒߚ߇㧘⃿㔚ᭂ⋥ᓘ 2r=4, 10mmߩ⊒శߪᓸᒙߢ޽ࠆߚ߼㜞ᗵᐲࠞࡔ࡜(ICCD)ࠍ↪޿ߡⷰߩ႐วߢߪ㧘᷹ቯࠍⴕߞߚ޿ߕࠇߩࠡࡖ࠶ࡊ㐳ߦ߅޿ߡ߽⃿᷹ࠍⴕߞߚ㧚੹࿁↪޿ߚ ICCD ࠞࡔ࡜ߢߪන৻ߩ᡼㔚ࠍಽ㧙ᐔ᧼ࠡࡖ࠶ࡊߢߩ⎕უߣߥߞߚ㧚ߎࠇߦኻߒߡ㧘⋥ᓘഀ᠟ᓇߔࠆߎߣ߇ߢ߈ߥ޿ߚ߼㧘ห৻᧦ઙߦߡᢙ࿁᠟ᓇ

2r=3mm ߢߪ㧘ࠡࡖ࠶ࡊ㐳߇ g=3mm ߣ g=4mm ߦ߅޿ߡ㧘⃿ߒ㧘ᦨ߽ઍ⴫⊛ߥ᠟ᓇ⚿ᨐࠍណ↪ߒߚ㧚߹ߚ㧘ICCD ࠞࡔ㧙ᐔ᧼ࠡࡖ࠶ࡊߢߩ⎕უߛߌߢߥߊᴪ㕙ߢߩ⎕უ߽↢ߓߚ㧚࡜߳ߩᒝ޿ࠦࡠ࠽⊒శ߿⎕უశߩ౉኿㧘⎕უᤨߦ߅ߌࠆࠗ

߹ߚ㧘20 ࿁ߩ᷹ቯߦ߅ߌࠆ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߅ࠃ߮ᴪ㕙ߘࠇࡦࡄ࡞ࠬᕈࡁࠗ࠭ߦࠃࠆࠞࡔ࡜ߩ៊்࡮⺋േ૞ࠍㆱߌࠆߚ

ߙࠇߩ⎕უ࿁ᢙ߆ࠄ㧘ฦ⚻〝ߢߩ⎕უߩഀวࠍ᳞߼㧘࿑ਛߦ߼㧘᷹ⷰߦ߅ߌࠆශട㔚࿶ᵄ㜞୯ߪ㧘ᵄ㗡㧘ᵄየࠍㅢߒߡ

␜ߒߚ㧚g=3mm ߩ႐ว㧘⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ 0.8㧘ᴪ㕙ߢ 0.2⎕უ߇⿠ߎࠄߥ޿▸࿐ߢน⢻ߥ㒢ࠅ㜞޿୯ߦ⸳ቯߒߚ㧚ߢ޽ߞߚ㧚৻ᣇ㧘g=4mm ߩ႐ว㧘⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߇ 0.45㧘

࿑ 4(a)ߦᱜᭂᕈߦ߅ߌࠆࠦࡠ࠽ߩ᭽ሶࠍ␜ߔ㧚ශടࡄ࡞ᴪ㕙߇ 0.55 ߢ޽ࠅ㧘⃿㔚ᭂߩ⋥ᓘ 2r=3mm ߢߪࠡࡖ࠶ࡊ㐳߇ࠬ㔚࿶ߩᵄ㜞୯ߪ g=3, 4mm ߣ߽ߦ 16.0kV ߢ޽ࠆ㧚ᱜᭂᕈჇᄢߔࠆߣᴪ㕙⎕უߩ⏕₸߇਄᣹ߔࠆߎߣ߇ࠊ߆ߞߚ㧚ߦ߅޿ߡߪࠦࡠ࠽㐿ᆎᓟߩㅴዷ߇ㅦߊ㧘ࠦࡠ࠽ߩㅴዷߩ᭽

߹ߚ㧘ᱜ࡮⽶ᭂᕈߣ߽ߦหߓࠡࡖ࠶ࡊ㐳 g ߦ߅޿ߡߪ㧘⃿⋥ᓘ 2r ߇ᄢ߈޿߶ߤ⎕უ㔚࿶ߪ㜞޿㧚ᱜ࡮⽶ᭂᕈߣ߽ߦ⃿㧙ሶࠍᤨ㑆ಽഀ᠟ᓇߔࠆߎߣ߇ߢ߈ߥ߆ߞߚߚ߼㧘㔺శᤨ㑆
ࠍ 1Ps ߣߒߚ㧚᠟ᓇᤨߩශട㔚࿶ࠍࠦࡠ࠽௝ߩਅߦ␜ߒߚ㧚
40

ࠍ૶↪ߒ㧘
⚛ᴺߦࠃࠆ㔚⇇⸃ᨆ࠰ࡈ࠻㧔JMAG㧘
ᣣᧄ✚⎇(ᩣ)㧕
࿑ 3 ߦ␜ߒߚ⎕უ㔚࿶ߩᐔဋ୯߅ࠃ߮⎲⎜㉄ࠟ࡜ࠬߩᲧ⺃㔚₸߆ࠄ⎕უᤨߩ⃿ਅ┵ߩ㔚⇇ࠍ⷗Ⓧ߽ߞߚ㧚ߘߩ⚿ᨐ㧘ᱜᭂᕈߣ⽶ᭂᕈߢ⧯ᐓ⇣ߥࠆ߇㧘⃿⋥ᓘ 2r=3mm ߦ߅ߌࠆ⎕უ㔚⇇ߪ 16~23kV/mm㧘2r=4mm ߢߪ 12~20kV/mm㧘2r=10mm ߢߪ 13~21kV/mm ߣߥߞߚ㧚޿ߕࠇߩ⃿⋥ᓘߦ߅޿ߡ߽߶߷ห
ߓ⎕უ㔚⇇ߣߥߞߚߎߣ߆ࠄ㧘ห৻ශട㔚࿶ߦ߅޿ߡߪ㧘⃿

Breakdown Voltage VB (kV)ᐔ᧼ࠡࡖ࠶ࡊߢߩ⎕უߣᴪ㕙ߢߩ⎕უ߇ሽ࿷ߒߚ߇㧘᦭㒢ⷐ⋥ᓘߩჇᄢߦࠃࠅ⃿ਅ┵߅ࠃ߮ਃ㊀ὐㄭறߩ㔚⇇߇ᒙ߹ࠆ

30

20

10

0
0

ߚ߼㧘⎕უ㔚࿶߇㜞ߊߥߞߚ߽ߩߣ޿߃ࠆ㧚߹ߚ㧘ߎߩ⎕უPositive:0.3MPa

٨:2r=3mm(Sphere–Plane Gap)
٤:2r=3mm(Creeping Path)
ً:2r=4mm(Sphere–Plane Gap)
ٌ:2r=4mm(Creeping Path)
ٟ:2r=10mm(Sphere–Plane Gap)1㔚⇇୯ߪ㧘หゲ౞╴㔚ᭂ߿Ḱᐔ╬⃿㧙ᐔ᧼㔚ᭂߦ߅޿ߡ᷹ቯ
㧚ߎࠇߪᧄታ㛎ߦ߅ߌࠆ⎕უ㔚࿶ߩ᷹ቯ߇ㆊ㔚࿶ශടߦ߅ߌࠆ
㔚࿶ᵄ㗡ㇱߢߩ⎕უࠍኻ⽎ߣߒߚ߽ߩߢ޽ࠆߚ߼㧘ᤨ㑆ㆃࠇߦࠃࠆᓇ㗀߇⃻ࠇߚߣ⠨߃ࠄࠇࠆ㧚
3.3

㜞ᗵᐲࠞࡔ࡜ߦࠃࠆࠦࡠ࠽ߩ᜼േߩ᷹ⷰ

⎕უ⚻〝߅ࠃ߮⎕უ㔚࿶ߩᬌ⸛ߦ߅޿ߡ㧘⃿⋥ᓘ 2r=
4mm ߩ႐ว⥝๧ᷓ޿⃻⽎߇⷗ࠄࠇߚ㧚ߔߥࠊߜ㧘ᱜᭂᕈߢߪࠡࡖ࠶ࡊ㐳 g=2mm ߆ࠄ g=3mm ߢ⎕უ⚻〝߇⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߆ࠄᴪ㕙ߦᄌൻߒߚ߇㧘⽶ᭂᕈߢߪ߶ߣࠎߤߩ
᧦ઙߢ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ⎕უߣߥߞߚ㧚߹ߚ㧘ᱜ࡮⽶ਔᭂᕈߣ߽ߦ g=3mm ߣ g=4mm ߩ⎕უ㔚࿶ߦ㗼⪺ߥᏅߪ⷗ࠄࠇߥ߆ߞߚ㧚

Breakdown Voltage VB (kV)ߐࠇߚ୯ߦᲧߴߡ 1.5 ୚⒟ᐲᄢ߈ߥ୯ߣߥߞߡ޿ࠆ

40

19,20)

2
3
4
5
Gap Length g (mm)6(a) Positive

Negative:0.3MPa30

20Probability (2r=3mm)g
30.8
䃂(Gap)䂾(Creeping) 0.2

10

0
0

4
0.45
0.55

٨:2r=3mm(Sphere–Plane Gap)
٤:2r=3mm(Creeping Path)
ً:2r=4mm(Sphere–Plane Gap)
ٟ:2r=10mm(Sphere–Plane Path)

1

2
3
4
5
Gap Length g (mm)6(b) Negative࿑ 3 ⃿㔚ᭂ⋥ᓘߦࠃࠆ⎕უ㔚࿶ߣ⚻〝ߩᄌൻFig.3 Breakdown voltage and breakdown path for various
sphere electrodes.

132 (36)

32

3

2008

ࠦࡠ࠽ߩ⊒↢㧘ㅴዷ߇ࠊ߆ࠅ߿ߔߊߥࠆࠃ߁ߦฦ Frame ߦ᧼㔚ᭂߦะ߆ߞߡㅴዷߒߚ㧚ᧄ᷹ⷰߦ߅ߌࠆශട㔚࿶㗔ၞ㔚ᭂ㈩⟎ࠍ⊕✢ߢ␜ߒߚ㧚g=3㧘4mm ߩ޿ߕࠇߩ႐วߦ߽㧘ߢߪ㔚࿶(㔚⇇)ߩ਄᣹ߣߣ߽ߦᴪ㕙ࠦࡠ࠽ߪᐔ᧼㔚ᭂᣇะ

ਃ㊀ὐㄭற߆ࠄࡃ࡝ࠕᴪ㕙ࠍᐔ᧼㔚ᭂᣇะߦᄢ߈ߊㅴዷ

ߦㅴዷߒ㧘g=3mm ߦ⷗ࠄࠇߚࠦࡠ࠽ߩᛥ೙ߪ⹺߼ࠄࠇߥ

ߒߡ޿ࠆ᭽ሶ߇᷹ⷰߐࠇߚ㧚ߒ߆ߒ㧘࿑ 4(a)ߩ g=3mm ߢ޿㧚ߪᲧセ⊛ૐ޿ශട㔚࿶߆ࠄߩ᠟ᓇ(5.5 ~ 15.4kV)ߦ߅޿ߡ

ߔߥࠊߜ㧘Ყセ⊛ૐ޿ශട㔚࿶㗔ၞߦ߅޿ߡ㧘⽶ᭂᕈߩᴪ㕙ࠦࡠ࠽߇᷹ⷰߐࠇߚ߇㧘࿑ 4(b)ߩ g=4mm ߢߪශട㔚

g=3mm ߢߪਃ㊀ὐઃㄭ߆ࠄߩᴪ㕙ࠦࡠ࠽ߩㅴዷߩᛥ೙߇ⷰ

࿶߇ 13.5 ~ 16.3kV ߦ߅޿ߡࠦࡠ࠽߇᠟ᓇߢ߈㧘ߎࠇࠃࠅ᷹ߐࠇߚ߇㧘g=4mm ߢߪਃ㊀ὐઃㄭ߆ࠄߩᴪ㕙ࠦࡠ࠽ߪ㔚࿶ૐ޿ශട㔚࿶㗔ၞߢߪࠦࡠ࠽ࠍ᷹ⷰߔࠆߎߣ߇ߢ߈ߥ߆

ߩ਄᣹ߣߣ߽ߦㅴዷߒߚ㧚ߞߚ㧚ߥ߅㧘g=2mm ߦ߅޿ߡ߽ g=3, 4mm ߣห᭽ߦਃ㊀ὐઃㄭ߆ࠄߩࠦࡠ࠽ߩ⊒↢߇᷹ⷰߐࠇߚ㧚એ਄ߩ⚿ᨐ߆ࠄ㧘g=3mm ߣ g=4mm ޿ߕࠇߦ߅޿ߡ߽㧘ᱜ⽶ਔᭂᕈߣ߽ߦ㧘߹ߕਃ㊀ὐ߆ࠄࠦࡠ࠽߇⊒↢ߒ㧘ߘߩᓟᴪ࿑ 5 ߦߪ⽶ᭂᕈߦ߅ߌࠆࠦࡠ࠽ߩ⊒↢㧘ㅴዷߩ᭽ሶࠍ␜

㕙ࠦࡠ࠽ߣߥࠅㅴዷߔࠆߎߣ߇᣿ࠄ߆ߣߥߞߚ㧚߹ߚ㧘⽶ᭂߒߚ㧚⽶ᭂᕈߦ߅޿ߡߪ㧘g=3, 4mm ߣ߽ߦශടࡄ࡞ࠬ㔚ᕈߦ߅޿ߡߪૐ㔚࿶㗔ၞߢߩᴪ㕙ࠦࡠ࠽ߩㅴዷㆊ⒟ߦ㆑޿

࿶ߩᵄ㜞୯ߪ 20.5kV ߢ㧘㔺శᤨ㑆 200ns ߦࠃࠆ᠟ᓇߢ޽

߇޽ࠆߎߣ߽ࠊ߆ࠅ㧘ߎࠇ߇ 2r=4mm ߦ߅ߌࠆ⽶ᭂᕈ⎕უ㔚ࠆ㧚࿑ 5(a)ߩ g=3mm ߩࠦࡠ࠽ߩㅴዷㆊ⒟ࠍ⷗ࠆߣ㧘Frame࿶ߩࠡࡖ࠶ࡊ㐳ଐሽᕈߦᓇ㗀ࠍ෸߷ߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚

2 (11.8 ~ 13.5kV)ߢᦨೋߩࠦࡠ࠽⊒శ߇ਃ㊀ὐઃㄭߢ᷹ⷰ
ߐࠇࠆ㧚ᰴ޿ߢ㧘Frame 3 (13.1 ~ 15.3kV)ߢ㔚࿶(㔚⇇)ߩ਄

3.4᣹ߦࠃࠅᐔ᧼㔚ᭂᣇะߦᴪ㕙ࠦࡠ࠽߇ㅴዷߔࠆ߇㧘FrameICCD ࠞࡔ࡜ߢߪᲧセ⊛ශട㔚࿶߇ૐ޿㗔ၞߦ߅ߌࠆࠦ

4 (15.2 ~ 17.0kV)ߢߪ㧘Frame 3 ߦᲧߴߡ㧘ਃ㊀ὐ߆ࠄߩિ

ࡠ࠽ߩ⊒↢ߣߘߩ᜼േߩߺߦὶὐࠍᒰߡߡ᷹ⷰࠍⴕߞߚ㧚߮ߪ⍴ߊߥߞߡ޿ࠆ㧚ߐࠄߦ㔚࿶߇਄᣹ߒߚ Frame 5 (16.5

ICCD ࠞࡔ࡜ߪࠦࡠ࠽⊒శࠍ㜞ᗵᐲߢ᠟ᓇߢ߈ࠆ߇㧘ශട~ 18.0kV)ߢౣ߮ᴪ㕙ࠦࡠ࠽ߩㅴዷ߇᷹ⷰߐࠇߚ㧚৻ᣇ㧘࿑㔚࿶ߩ㜞޿㗔ၞߢߩᒝ޿⊒శ㧔଀߃߫㧘ᒝ޿⊒శࠍ઻ߞߚ

5(b)ߦ␜ߒߚ g=4mm ߩ႐วߢߪ㧘Frame 2 (14.8 ~ 17.8kV)ᴪ㕙ࠦࡠ࠽㧕߅ࠃ߮න৻ߩ᡼㔚ߩㅴዷ᜼േࠍᤨ㑆ಽഀ᠟ᓇߦ߅޿ߡਃ㊀ὐઃㄭߢࠦࡠ࠽⊒శ߇᷹ⷰߐࠇ㧘ߘߩᓟශട

ߔࠆߎߣߪߢ߈ߥ޿㧚㜞ㅦᐲࠞࡔ࡜ߪ㧘ICCD ߶ߤ㜞ᗵᐲ㔚࿶ߩ਄᣹ߦ઻޿ Frame 3~5 ߦ߅޿ߡ㗅ᰴᴪ㕙ࠦࡠ࠽߇ᐔ

ߢߪߥ޿߇㧘ࠃࠅ㜞޿㔚࿶㗔ၞ߆ࠄ⎕უ߹ߢߩࠦࡠ࠽ߩㅴ

00㜞ㅦᐲࠞࡔ࡜ߦࠃࠆ⎕უ᜼േߩ᷹ⷰ

ዷ᜼േࠍᤨ㑆ಽഀ᠟ᓇน⢻ߢ޽ࠅ㧘ߎߩ㔚࿶㗔ၞߦ߅ߌࠆ
ࠦࡠ࠽ߩ᜼േߩᏅ⇣ࠍᬌ⸛ߔࠆߎߣ߇ߢ߈ࠆ㧚ߘߎߢ㧘㜞ㅦᐲࠞࡔ࡜ࠍ↪޿ߡ⎕უߦ⥋ࠆ᭽ሶࠍ⺞ߴߚ㧚ᱜ࡮⽶ᭂᕈ

4mm

4mm

ߣ߽ߦ㧘ࠡࡖ࠶ࡊ㐳 g=2~4mm ߦኻߒߡ㧘㔚ᭂߩ஥㕙ࠍᢳ߼਄ᣇ߆ࠄ᠟ᓇࠍⴕߞߚ㧚ฦࡈ࡟࡯ࡓߩ᠟ᓇᤨ㑆㧔㔺శᤨ(a) g=3mm(b) g=4mm
5.5 ~ 15.4kV
13.5 ~ 16.3kV
࿑ 4 ICCD ࠞࡔ࡜ߦࠃࠆࠦࡠ࠽௝ (ᱜᭂᕈ, 2r=4mm)
Fig.4 Corona image by ICCD camera. (Positive, 2r=4mm)
Frame1㑆㧕ߪ 30ns㧘ࠗࡦ࠲࡯ࡈ࡟࡯ࡓᤨ㑆ߪ 10ns ߣߒߚ㧚߹ߚ㧘ශട㔚࿶ᵄ㜞୯ߪ⎕უ㔚࿶ߩ᷹ቯ߅ࠃ߮⎕უ⚻〝ߩ᷹ⷰᤨߣหߓ 35kV ߢ޽ࠆ㧚

Frame2

Frame3

Frame4

Frame511.8 ~ 13.5kV

13.1 ~ 15.3kV

15.2 ~ 17.0kV

16.5 ~ 18.0kV

14.8 ~ 17.8kV

17.8 ~ 19.0kV

19.0 ~ 19.8kV

19.6 ~ 20.0kV

0
(a)
g=3mm

4mm
9.7 ~ 11.7kV

(b)
g=4mm

0

4mm
11.4 ~ 15.6kV

࿑ 5 ICCD ࠞࡔ࡜ߦࠃࠆࠦࡠ࠽ߩㅴዷ᜼േ (⽶ᭂᕈ, 2r=4mm)
Fig.5 Behavior of corona extension observed with ICCD camera. (Negative, 2r=4mm)

N2ࠟࠬਛߩ⃿㧙ᐔ᧼㔚ᭂ㑆ߩࡄ࡞ࠬ㔚࿶ᵄ㗡ߦ߅ߌࠆ⛘✼⎕უߦ෸߷ߔਃ㊀ὐߩᓇ㗀㧔਄㊁⑲᮸ࠄ㧕(a) g=2mm

04mm(b) g=3mm(c) g=4mm

00(a) g=2mm

Frame 1(c) g=4mm

0

0

4mm

4mm

800 ~ 830ns
16.1 ~ 16.4kV

950 ~ 980ns
21.4 ~ 22.2kV

1280 ~ 1310ns
24.8 ~ 25.2kV

840 ~ 870ns
17.0 ~ 17.6kV

990 ~ 1020ns
22.4 ~ 22.8kV1320 ~ 1350ns
25.4 ~ 25.8kV

880 ~ 910ns
18.2 ~ 18.5kV

1030 ~ 1060ns
23.0 ~ 23.4kV

1360 ~ 1390ns
26.0 ~ 26.2kV

1070 ~ 1100ns
23.6 ~ 24.0kV

1400 ~ 1430ns
26.4 ~ 26.6kV

04mm

890 ~ 920ns
800 ~ 830ns 880 ~ 910ns 960 ~ 990ns 1180 ~ 1210ns
18.6 ~ 19.2kV 15.3 ~ 15.7kV 16.7 ~ 17.2kV 18.5 ~ 19.0kV 22.9 ~ 23.2kV

Frame 1(b) g=3mm

4mm

4mm

Frame 3930 ~ 960ns
840 ~ 870ns 920 ~ 950ns
19.6 ~ 19.9kV 16.1 ~ 16.3kV 17.6 ~ 18.1kV

Frame 5

Frame 11220 ~ 1250ns
23.4 ~ 23.9kV

Frame 2
Frame 2
Frame 2
Frame 4
࿑ 6 㜞ㅦᐲࠞࡔ࡜ߦࠃࠆ⎕უ᜼േߩ᷹ⷰ㧔ᱜᭂᕈ㧘2r=4mm㧕
Fig.6 Breakdown behavior observed using high speed camera. (Positive,
2r=4mm)ࠡࡖ࠶ࡊ㐳 g=2, 3, 4mm ߦ߅ߌࠆ㜞ㅦᐲࠞࡔ࡜ߦࠃࠆᱜᭂ

ᕈߩ႐วߩ⎕უ᜼േࠍ࿑ 6 ߦ␜ߒߚ㧚ߥ߅㧘৻ㅪߩ᠟ᓇߦ߅
޿ߡࠦࡠ࠽⊒శ߇᷹ⷰߐࠇߚ Frame ߩ৻ߟ೨ࠍ Frame 1 ߣߒ

133 (37)
211

Frame 1

Frame 2

Frame 3

Frame 1

Frame 2

Frame 3

Frame 1

Frame 2

Frame 3ߡ߅ࠅ㧘᧦ઙߦࠃߞߡࠦࡠ࠽㐿ᆎ㔚࿶߿ࠦࡠ࠽⊒శ߇᷹ⷰน
⢻ߣߥߞߚ㔚࿶߇⇣ߥࠆߚ߼㧘࿑ 6(a),(b),(c)ߦ߅޿ߡ㔚࿶▸࿐߇⇣ߥߞߡ޿ࠆ㧚࿑ 6(a)ߩࠡࡖ࠶ࡊ㐳 g=2mm ߩ႐วߢߪ㧘
Frame 1 (18.6 ~ 19.2kV)ߢߪࠦࡠ࠽ߪ᷹ⷰߐࠇߥ޿߇㧘Frame 2(19.6 ~ 19.9kV)ߢ⃿ਅ┵߆ࠄߩ᡼㔚ߦࠃߞߡ㧘⃿㧙ᐔ᧼ࠡࡖ࠶
ࡊߢ⎕უߦ⥋ߞߡ޿ࠆ㧚৻ᣇ㧘࿑ 6(b)ߦ␜ߒߚ g=3mm ߩ႐วߢߪ㧘Frame 2 (16.1 ~ 16.3kV)ߢਃ㊀ὐઃㄭ߆ࠄߩᴪ㕙ࠦࡠ࠽ߩㅴዷ߇⷗ࠄࠇ㧘Frame 3, 4 ߢᴪ㕙ࠦࡠ࠽ߦࠃࠆ⊒శ߇᷹ⷰߐࠇߥߊߥࠅ㧘Frame 5 (18.5 ~ 19.0kV)ߢౣ߮ਃ㊀ὐઃㄭ߆Frame 4

Frame 4

࿑ 7 㜞ㅦᐲࠞࡔ࡜ߦࠃࠆ⎕უ᜼േߩ᷹ⷰ㧔⽶ᭂᕈ㧘2r=4mm㧕
Fig.7 Breakdown behavior observed using high speed camera.
(Negative, 2r=4mm)

ࠄિ߮ߚᴪ㕙᡼㔚ߦࠃߞߡ⎕უߦ⥋ߞߡ޿ࠆ᭽ሶ߇᷹ⷰߐ

Frame 2 (22.4 ~ 22.8kV)ߢਃ㊀ὐઃㄭ߆ࠄ⊒↢ߒߚࠦࡠ࠽߇ᴪ

ࠇߚ㧚ߐࠄߦ㧘࿑ 6(c)ߩ g=4mm ߢߪ㧘Frame 1 (22.9 ~ 23.2kV)㕙ࠍㅴዷߒߡ޿ࠆ᭽ሶ߇᷹ⷰߐࠇ㧘ߐࠄߦශട㔚࿶߇਄᣹ߒ

ߢߪ g=3mm ߩ႐วߦ߅޿ߡⷰࠄࠇߚࠃ߁ߥਃ㊀ὐ߆ࠄߩࠦ

ߚ Frame 3 (23.0 ~ 23.4kV)ߢ g=2mm ߩ Frame 2 ߦ⷗ࠄࠇߚࠃ

ࡠ࠽ߪ᷹ⷰߐࠇߥ޿߇㧘Frame 2 (23.4 ~ 23.9kV)ߦ߅޿ߡਃ㊀߁ߥ⃿ਅ┵߆ࠄߩࠦࡠ࠽ߣਃ㊀ὐઃㄭ߆ࠄߩᴪ㕙ࠦࡠ࠽ߩὐઃㄭ߆ࠄߩᴪ㕙᡼㔚ߦࠃߞߡ⎕უߦ⥋ߞߡ޿ࠆ᭽ሶ߇ⷰ

ਔᣇ߇ᐔ᧼㔚ᭂ߹ߢㅴዷߒߚ㧚߹ߚ㧘Frame 3 ߦ߅޿ߡਃ㊀᷹ߐࠇߚ㧚ߥ߅㧘࿑ 6(b)ߩ g=3mm ߣ࿑ 6(c)ߩ g=4mm ߩ⎕უὐㄭறߩࠦࡠ࠽ߩ⊒శߪ Frame 2 ߦᲧߴߡᒙߊߥߞߚ㧚ߘߩ㔚࿶߇⚂ 5kV ⇣ߥߞߡ޿ࠆ߇㧘࿑ 2 ߦ␜ߒߡ޿ࠆࠃ߁ߦ⎕უᓟ㧘Frame 4 ߦ߅޿ߡᴪ㕙ߢߪߥߊ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ⎕უ㔚࿶ߩ߫ࠄߟ߈ߩ▸࿐ౝߢ޽ࠆ㧚ߦ⥋ߞߚ㧚߹ߚ㧘g=4mm ߩ႐ว㧔࿑ 7(c)㧕
㧘Frame 2 (25.4 ~⽶ᭂᕈߦ߅ߌࠆ㜞ㅦᐲࠞࡔ࡜ߦࠃࠆ⎕უ᜼േࠍ࿑ 7 ߦ␜ߔ㧚

25.8kV)ߦ߅޿ߡ㧘ਃ㊀ὐ߆ࠄિ߮ࠆᴪ㕙ࠦࡠ࠽ߣ⃿ਅ┵߆ࠄ࿑ 7(a)㧘(b)㧘(c)ߢ㔚࿶▸࿐߇⇣ߥߞߡ޿ࠆߩߪ࿑ 6 ߩ႐วߣߩࠦࡠ࠽߇หᤨߦ᷹ⷰߐࠇߚ߇㧘ᣢߦㅀߴߚઁߩ᧦ઙߦᲧߴ

หߓℂ↱ߢ޽ࠆ㧚߹ߚ㧘࿑ 7(b)ߣ࿑ 7(c)ߩ⎕უ㔚࿶ߩᏅߪ㧘ߡ㧘ਃ㊀ὐઃㄭ߆ࠄㅴዷߒߡ޿ࠆᴪ㕙ࠦࡠ࠽ߩ⊒శߪᒝߊ㧘࿑ 2 ߦ␜ߒߚ⎕უ㔚࿶ߩ߫ࠄߟ߈ߩ▸࿐ౝߢ޽ࠆ㧚࿑ 7(a)ߦ߹ߚ⃿ਅ┵߆ࠄߩࠦࡠ࠽ߣᲧߴߡ߽ᒝ޿⊒శ߇᷹ⷰߐࠇߚ㧚␜ߒߚࠡࡖ࠶ࡊ㐳 g=2mm ߢߪ㧘Frame 2 (17.0 ~ 17.6kV)ߢ⃿એ਄ߩࠃ߁ߦ㧘ᱜᭂᕈߦ߅޿ߡ㧘g=2mm ߢߪ㧘㜞ㅦᐲࠞਅ┵߆ࠄߩࠦࡠ࠽ߣਃ㊀ὐઃㄭ߆ࠄિ߮ߡ޿ࠆᴪ㕙ࠦࡠ࠽ࡔ࡜ߢߪਃ㊀ὐ߆ࠄߩࠦࡠ࠽ߪ᷹ⷰߐࠇߥ߆ߞߚ߇㧘ICCDߩਔᣇ߇ᐔ᧼㔚ᭂ߹ߢㅴዷߒߡ޿ࠆ㧚ߐࠄߦ㧘ශട㔚࿶ߩ਄ߢߪ᷹ⷰߐࠇߡ߅ࠅ㧘ਔ⚿ᨐࠍวࠊߖࠆߣ㧘ਃ㊀ὐઃㄭߢࠦ

᣹ߒߚ Frame 3 (18.2 ~ 18.5kV)ߦ߅޿ߡ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ

ࡠ࠽ߪ⊒↢ߔࠆ߇㧘⎕უߦ⥋ࠆ߹ߢߦߪᴪ㕙ࠦࡠ࠽ߪᚑ㐳ߖߩ⎕უ߇᷹ⷰߐࠇߚ㧚ᰴߦ㧘࿑ 7(b)ߩ g=3mm ߩ႐วߢߪ㧘ߕ㧘ශട㔚࿶(㔚⇇)਄᣹ߦࠃࠅ⃿㧙ᐔ᧼㑆ߢ⎕უߦ⥋ߞߡ޿

134 (38)
212

32
3
2008
㕒㔚᳇ቇળ⹹ ╙ 32 Ꮞ ╙ 3 ภ㧔2008㧕ߒ㧘ߘߩᓟශട㔚࿶(㔚⇇)ߩ਄᣹ߦࠃߞߡᴪ㕙⎕უߦ⥋ߞߡEs (kV/mm)޿ࠆ㧚৻ᣇ㧘⽶ᭂᕈߦ߅޿ߡߪ㧘᷹ⷰߒߚ޿ߕࠇߩࠡࡖ࠶ࡊ
㐳 g=2, 3, 4mm ߣ߽ߦਃ㊀ὐ߆ࠄ⊒↢ߒߚᴪ㕙ࠦࡠ࠽߇ᐔ᧼
㔚ᭂߦ߹ߢ㆐ߒߡ޿ࠆߦ߽߆߆ࠊࠄߕ㧘ߔߴߡ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߩ⎕უߣߥࠅ㧘ᱜᭂᕈߣ⎕უ᜼േ߇⇣ߥࠆߎߣ߇ࠊ߆ߞ

30

2r
Es Em/Es
3mm
4mm

20

20

10

10

Em / Es30ࠆ㧚ߎࠇߦኻߒߡ㧘g=3, 4mm ߢߪ㧘ਃ㊀ὐ߆ࠄࠦࡠ࠽߇⊒↢

ߚ㧚
4.

0
0

ᬌ⸛

ශട㔚࿶ᵄ㗡ㇱߢࠦࡠ࠽߇⊒↢ߒ㧘ߘߩࠦࡠ࠽ߦࠃࠆⓨ㑆

1

2

3

4

5

0

Gap Length g (mm)࿑ 8 ฦ⒳᧦ઙߦ߅ߌࠆ㔚⇇⸘▚୯
Fig.8 Calculated electric field.

㔚⩄߿⺃㔚૕⴫㕙ߦ⫾Ⓧߔࠆ㔚⩄╬߇㧘ߘߩᓟߩ᡼㔚ㅴዷ߿ࡈ࡜࠶ࠪࠝ࡯ࡃߦᓇ㗀ࠍਈ߃ࠆ㧚ߒ߆ߒ㧘ⓨ㑆㔚⩄߿⫾Ⓧ㔚⩄ߩᓇ㗀ߪⶄ㔀ߢ޽ࠅ㧘ᧄ⎇ⓥߢߪૐ㔚࿶㗔ၞ߆ࠄ㜞㔚࿶㗔୚ࠍ⿧߃ߡ㘻๺௑ะࠍ␜ߒߡ޿ࠆ‫ޕ‬ਃ㊀ὐㄭற߇㕖Ᏹߦ㜞㔚ၞ߹ߢߩ᜼േࠍੑ⒳ߩࠞࡔ࡜ߦࠃࠅ᷹ⷰߒߚ㧚ߘߩ⚿ᨐࠍ߽⇇ߢ㧘ߎߩ㜞㔚⇇ߩⓨ㑆ߦೋᦼ㔚ሶ߇ଏ⛎ߐࠇ㧘ࠦࡠ࠽߇⊒ߣߦⓨ㑆㔚⩄㧘⫾Ⓧ㔚⩄ߩᓇ㗀ࠍ฽߼ߡ⎕უ․ᕈࠍ⠨ኤߔࠆ㧚↢ߔࠆ㧚ߐࠄߦශടࡄ࡞ࠬ㔚࿶ߩᵄ㗡ㇱߦ߅ߌࠆ㔚࿶(㔚⇇)4.1ࠡࡖ࠶ࡊ㐳ߦࠃࠆ⎕უ⚻〝ߩᄌൻ਄᣹ߦࠃߞߡ㧘ਃ㊀ὐ߆ࠄߩࠦࡠ࠽ߪᴪ㕙ࠦࡠ࠽ߣߥࠅ㧘ᴪᧄ㔚ᭂ♽ߦ߅޿ߡ㧘࿑ 3(a)ߦ␜ߒߚᱜᭂᕈߩ႐ว㧘⃿⋥ᓘ㕙ࠦࡠ࠽߇ᚑ㐳ߒ㧘ᴪ㕙⎕უߦዉ߆ࠇߚߣ⠨߃ࠄࠇࠆ㧚

2r=3mm ߢߪࠡࡖ࠶ࡊ㐳 g=1mm ߣ 2mm ߩ㑆ߢ㧘2r=4mm ߢ৻ᣇ㧘⽶ᭂᕈߦ߅޿ߡߪ㧘࿑ 5 ߦ␜ߒߚૐ㔚࿶㗔ၞߢߩࠦߪ g=2mm ߣ 3mm ߩ㑆ߢ⎕უ⚻〝߇⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߆ࠄᴪ

ࡠ࠽ߩ᷹ⷰߦ߅޿ߡਃ㊀ὐઃㄭ߆ࠄߩࠦࡠ࠽ߩ⊒↢ߣᴪ㕙㕙ߦᄌൻߒߚ㧚৻ᣇ㧘࿑ 3(b)ߩ⽶ᭂᕈߢߪ㧘߶ߣࠎߤߩ᧦ઙ

ࠦࡠ࠽ߩㅴዷ߇⹺߼ࠄࠇߚ㧚ߒ߆ߒ㧘࿑ 7 ߦ␜ߒߚࠃ߁ߦ㜞ߢ⃿㧙ᐔ᧼㑆ߢߩ⎕უߣߥߞߚ㧚ߎߩේ࿃ߦߟ޿ߡ⠨ኤߔࠆ㧚㔚࿶㗔ၞߩ᷹ⷰߦ߅޿ߡ߽ᴪ㕙ࠦࡠ࠽ߪ᷹ⷰߐࠇߚ߇㧘⎕უ߹ߕ㧘ࠦࡠ࠽㐿ᆎߦߟ޿ߡ⠨߃ࠆ㧚ᣢㅀߩ᦭㒢ⷐ⚛ᴺߦࠃߪ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ↢ߓߚ㧚ࠆ㕒㔚⇇⸃ᨆ࠰ࡈ࠻(JMAG)ࠍ↪޿㧘⃿ਅ┵ㄭறߩᭂᄢ୯ Es⃿ਅ┵߅ࠃ߮ਃ㊀ὐㄭறߩ㕒㔚⇇ߦߟ޿ߡߪᱜᭂᕈߣห

߅ࠃ߮ਃ㊀ὐㄭறߩᦨᄢ㔚⇇ Em ࠍ᳞߼㧘Es ߅ࠃ߮Ყ₸(Em/Es)

ߓߢ޽ࠅ㧘⽶ᭂᕈߢ߽㧘2r=3, 4mm ߢߪ㧘߹ߕਃ㊀ὐઃㄭߩࠍ࿑ 8 ߦ␜ߒߚ㧚ߥ߅㧘᧦ઙߣߒߡශട㔚࿶ 10kV㧘⎲⎜㉄㜞㔚⇇㗔ၞߢࠦࡠ࠽߇⊒↢ߒ㧘ශട㔚࿶(㔚⇇)ߩ਄᣹ߦࠃࠅ

ࠟ࡜ࠬߩᲧ⺃㔚₸Hr=7.0 ߣߒߚ㧚⃿ਅ┵ߩ㔚⇇ Es ߪ⃿⋥ᓘߩᴪ㕙ࠦࡠ࠽߇ᐔ᧼ᣇะߦㅴዷߒߡ޿ߊ㧚⽶ᭂᕈߢߪࠦࡠ࠽ߩ

Ⴧᄢ߅ࠃ߮ࠡࡖ࠶ࡊ㐳ߩჇᄢߦࠃࠅૐਅߔࠆ߇㧘Es ߩ୯ߪㅴዷߦ߅޿ߡߪ೨ᣇߦ㔚ሶ߇ଏ⛎ߐࠇࠆ㧚ߎߩㆊ⒟ߦ߅޿ߡ㧘

5~14 kV/mm ߢ޽ࠆ㧚৻ᣇ㧘Es ߦኻߔࠆਃ㊀ὐㄭறߩᦨᄢ㔚ᴪ㕙ࠦࡠ࠽߆ࠄ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߦೋᦼ㔚ሶ߇ଏ⛎ߐࠇࠆ⇇ Em ߩᲧ₸(Em/Es)ߪ㧘᭎ߨࠡࡖ࠶ࡊ㐳 g ߩჇᄢߣߣ߽ߦᄢ

น⢻ᕈ߇޽ࠆ㧚߹ߚ㧘10 ~ 102 kV/mm ߩ㔚⇇ਅߢߪ⃿㔚ᭂ⴫߈ߊߥࠆ㧚․ߦ㧘2r=3, 4mm ߢߩ Em/Es ߪ 10~25 ߢ㧘ਃ㊀ὐ㕙߆ࠄ㔚⇇᡼಴ߦࠃࠆ㔚ሶߩଏ⛎߽น⢻ߢ޽ࠆ 19,21)㧚ᱜᭂᕈㄭறߩ㔚⇇߇⃿ਅ┵ߩ㔚⇇ߦᲧߴߡ 10 ୚એ਄ߣߥߞߡ߅ࠅ㧘ߢߪߎߩࠃ߁ߥ㔚ሶߩଏ⛎ߪ࿎㔍ߣ⠨߃ࠄࠇࠆ㧚ߎࠇࠄߩ㔚ߎࠇࠄߩ⃿⋥ᓘߢߪ㧘߹ߕਃ㊀ὐㄭறߢࠦࡠ࠽߇⊒↢ߔࠆ㧚ሶଏ⛎ࡔࠞ࠾࠭ࡓߩ㆑޿ߦࠃߞߡ㧘ᱜᭂᕈߣ⽶ᭂᕈߢ⎕უ⚻ߒ߆ߒ㧘2r=3, 4mm ߩᱜᭂᕈߦ߅޿ߡ⃿㧙ᐔ᧼㑆ߩ⎕უߣ〝ߦᏅ߇⃻ࠇߚ߽ߩߣ⸒߃ࠆ㧚ߥ߅㧘࿑ 3(b)ߢ⃿㔚ᭂߩ⋥ᓘߥߞߚࠡࡖ࠶ࡊ㐳ߢߪ㧘⃿ਅ┵ߩ㔚⇇ Es ߪ 8~14kV/mm ߣᣢ

2r=3mm ߩ႐ว㧘ࠡࡖ࠶ࡊ㐳 g=4, 5mm ߢᴪ㕙ߢߩ⎕უ߽᷹ⷰႎߩ N2 ߩ⎕უ㔚⇇ߣห╬એ਄ߩ㔚⇇߇߆߆ߞߡ޿ࠆ

19,20)

㧚߹ߐࠇߚ߇㧘
2r=3mm ߢߪ2r=4mm ߦᲧߴߡ⋥ᓘ߇ዊߐ޿ߚ߼㧘ߚ㧘⃿ߩਅ┵ㄭறߩ⴫㕙Ⓧ࡮૕Ⓧࠍ⠨߃ࠆߣਃ㊀ὐઃㄭࠃࠅ

ਃ㊀ὐㄭறߪ㧘ࠃࠅ㜞㔚⇇ߣߥߞߡ޿ࠆߎߣ߇㑐ଥߒߡ޿ࠆ

߽⃿ਅ┵ㄭறߩ߶߁߇㜞㔚⇇㗔ၞߩⓨ㑆ߪᐢߊ㧘ߘߎߢߩ㔚ߣᕁࠊࠇࠆ㧚

ሶߩሽ࿷⏕₸ߪਃ㊀ὐㄭறࠃࠅ㜞ߊߥࠆ㧚ߎߩߚ߼㧘ਃ㊀ὐታ㓙ߦߪ⊒↢ߒߚࠦࡠ࠽߿ࡃ࡝ࠕᴪ㕙ߩ⫾Ⓧ㔚⩄ߩᓇ㗀ㄭறߢࠦࡠ࠽߇⊒↢ߔࠆ߽ߩߩ㧘ᴪ㕙ࠦࡠ࠽ߦࠃࠅ⎕უߦ⥋╬ߪᏱߦᄌൻߔࠆ㧚ߎࠇࠍ⠨ᘦߔࠆᔅⷐ߇޽ࠅ㧘ታ㓙ߩ⃿ਅࠆ߹ߢߦ㧘⃿ਅ┵ઃㄭߢ᡼㔚߇↢ߓ㧘⎕უ߇ᒁ߈⿠ߎߐࠇࠆ㧚┵ߩ㔚⇇߅ࠃ߮ਃ㊀ὐㄭறߩᦨᄢ㔚⇇ߣߘࠇࠄߩᲧ₸ߣ⎕ߎࠇߦኻߒ㧘ᴪ㕙⎕უߣߥߞߚ᧦ઙߢߪ㧘ශട㔚࿶ 10kVუ⚻〝ᄌൻߩ㑣୯ߦߟ޿ߡߪ㧘ߐࠄߦᬌ⸛߇ᔅⷐߢ޽ࠆ㧚ߦ߅ߌࠆ Es ߪ 5~10kV/mm ߣ⃿㧙ᐔ᧼ߢߩ⎕უߩ႐วߦኻߒ
ߡ 1/2 ⒟ᐲߦૐਅߔࠆ৻ᣇ㧘2r=3mm ߢߪ g=2mm એ਄ߢ㧘4.2

2r=4mm ߢߪ g=3mm એ਄ߢ⧯ᐓ߫ࠄߟ߈ߪ޽ࠆ߇ Em/Es ߪ 20

࿑ 2 ߩ 2r=4mm ߩ⎕უ㔚࿶ߩࠡࡖ࠶ࡊ㐳ଐሽᕈߦ߅޿ߡ㧘ࠡࡖ࠶ࡊ㐳ߦኻߔࠆ⎕უ㔚࿶ߩ᜼േ

N2
135 (39)
N2 ࠟࠬਛߩ⃿㧙ᐔ᧼㔚ᭂ㑆ߩࡄ࡞ࠬ㔚࿶ᵄ㗡ߦ߅ߌࠆ⛘✼⎕უߦ෸߷ߔਃ㊀ὐߩᓇ㗀㧔਄㊁⑲᮸ࠄ㧕
213

g=3mm ߩ⎕უ㔚࿶ߣ g=4mm ߩ⎕უ㔚࿶ߦᄢ߈ߥᏅ߇⷗ࠄࠇ

ੌᤨߩශട㔚࿶߆ࠄ⃿ਅ┵ߩ㔚⇇ࠍ⷗Ⓧ߽ࠆߣ㧘g=3mm ߢߪߕ㧘g=5mm ߢౣ߮਄᣹ߔࠆ㧚ߎߩේ࿃ߦߟ޿ߡ⠨߃ࠆ㧚ශട㔚࿶ 22.8kV ߢ 16.2kV/mm㧘g=4mm ߢߪශട㔚࿶ 25.8kVᱜᭂᕈߩ႐ว㧘೨▵ߢㅀߴߚࠃ߁ߦ g=3mm㧘g=4mm ޿ߕߢ 16.7kV/mm ߣߥࠅ߶ߣࠎߤᏅߪߥ޿㧚ߒ߆ߒ㧘࿑ 5 ߆ࠄࠇߦ߅޿ߡ߽㧘ਃ㊀ὐઃㄭ߆ࠄࠦࡠ࠽߇⊒↢ߒ㧘ශട㔚࿶(㔚g=3mm ߦᲧߴߡ g=4mm ߢߪ㧘ࠦࡠ࠽㐿ᆎ㔚࿶ߪ㜞ߊ㧘ᴪ㕙⇇)ߩ਄᣹ߦࠃࠅᴪ㕙ߢ⎕უߦ⥋ࠆ㧚߹ߕ㧘࿑ 8 ߩ Es㧘Em/Esࠦࡠ࠽ߪශട㔚࿶ߩ਄᣹ߣߣ߽ߦㅴዷߒߚ㧚ߔߥࠊߜ㧘߆ࠄ㧘ᐔ᧼㔚ᭂߣਃ㊀ὐߩ〒㔌߇⍴޿ߎߣࠍ෻ᤋߒߡ㧘

g=4mm ߩ߶߁߇ࠦࡠ࠽వ┵㔚⇇ߪ㜞ߊߥࠅ㧘ߘߎߢߩ㔚ሶߩ

g=3mm ߦ߅ߌࠆਃ㊀ὐઃㄭߩ㔚⇇ߪ㧘g=4mm ߩ႐วߦᲧߴ

ࠛࡀ࡞ࠡ࡯߽ᄢ߈ߊ㧘ࠦࡠ࠽⥄૕߆ࠄߩ࠼࡝ࡈ࠻࡮᜛ᢔ㧘⚡ߡࠃࠅ㜞㔚⇇ߢ޽ࠆߎߣ߇ࠊ߆ࠆ㧚ߘߩߚ߼㧘g=3mm ߩ߶߁ᄖ✢ߦࠃࠆశ㔚㔌㧘⺃㔚૕⴫㕙߆ࠄߩశ㔚ሶ᡼಴ߥߤ߽ᵴ⊒߇ࠦࡠ࠽㐿ᆎ㔚࿶ߪૐ޿ߣ⠨߃ࠄࠇࠆ㧚ታ㓙㧘࿑ 4 ߦ␜ߒߚߦߥࠆߣ⠨߃ࠄࠇࠆ㧚ߘߩߚ߼㧘⽶ᭂᕈߩ⎕უ⚻〝ߦ㑐ߔࠆ㜞ᗵᐲࠞࡔ࡜ߦࠃߞߡࠦࡠ࠽⊒శ߇᠟ᓇߢ߈ߚߣ߈ߩශട

⠨ኤߢㅀߴߚ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߳ߩᴪ㕙ࠦࡠ࠽߆ࠄߩ㔚ሶ㔚࿶߆ࠄߺߡ㧘g=3mm ߩ߶߁߇ࠦࡠ࠽㐿ᆎ㔚࿶ߪૐ޿ߣ್ᢿ

ଏ⛎ߪ g=3mm ߦᲧߴߡ㧘g=4mm ߢ᦭ലߦ૞↪ߒߡ޿ࠆߣផ

ߢ߈ࠆ㧚ㅢᏱ㧘ᴪ㕙᡼㔚ߪࠦࡠ࠽㐿ᆎᓟ㧘ࡃ࡝ࠕᴪ㕙ߩ㔚⩄ኤߐࠇࠆ㧚ߘߩ⚿ᨐ㧘g=3mm ߦᲧߴߡ g=4mm ߩ⎕უ㔚࿶߇

⫾Ⓧߦࠃࠆ㔚⇇✭๺ߣශട㔚࿶਄᣹ߦࠃࠆࠦࡠ࠽వ┵㔚⇇޽߹ࠅᄌൻߒߥ߆ߞߚߣ⷗ࠄࠇࠆ㧚ߩ਄᣹ߩ➅ࠅ㄰ߒߢㅴዷߔࠆ㧚⫾Ⓧ㔚⩄ߦࠃࠆ㔚⇇✭๺㧘ශએ਄ߦㅀߴߚࠃ߁ߦ㧘ᱜ⽶ਔᭂᕈߣ߽ߦૐ㔚࿶㗔ၞߦ߅ߌട㔚࿶਄᣹ߦࠃࠆㅴዷߩ᭽ሶ߇࿑ 6(b)ߦ␜ߒߚ g=3mm ߩ႐ࠆࠦࡠ࠽ߩ⊒↢㧘ㅴዷ᜼േߩ㆑޿߇㧘⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߳ߩ

วߦ߅޿ߡ⃻ࠇߚ߽ߩߣ⠨߃ࠄࠇࠆ㧚㔚ሶଏ⛎ߩ⁁ᘒ㧘㜞㔚࿶㗔ၞߦ߅ߌࠆ⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ⎕ߎࠇߦኻߒߡ㧘g=4mm ߩ႐ว㧘ࠦࡠ࠽㐿ᆎ㔚࿶߇㜞ߊߥߞߚߎߣߦࠃࠅ㧘ࠦࡠ࠽㐿ᆎ⋥ᓟߩࠦࡠ࠽వ┵ߩ㔚⇇߽ᒝߊߥუߦ⥋ࠆ߹ߢߩ᜼േߦᓇ㗀ߒߚߚ߼㧘g=3mm ߣ g=4mm ߦ߅ߌࠆ⎕უ㔚࿶߇߶߷หߓ୯ߣߥߞߚߣ⠨߃ࠄࠇࠆ㧚ߞߡ޿ࠆ㧚ᒁ߈⛯߈ශട㔚࿶਄᣹ߦࠃࠅ㧘ࠦࡠ࠽వ┵㔚⇇ߪߐࠄߦᒝ߼ࠄࠇࠆ㧚ߎߩߚ߼㧘ਃ㊀ὐઃㄭ߆ࠄ⊒↢ߒߚࠦࡠ5.

࠽ߪ㧘㔚⩄⫾Ⓧߩ✭๺૞↪߇⃻ࠇࠆ೨ߦᴪ㕙ࠦࡠ࠽߇ᕆㅦߦ

⃿㧙ᐔ᧼㔚ᭂߦ⛘✼‛ߣߒߡ⎲⎜㉄ࠟ࡜ࠬࠍធ⸅ߐߖ

ㅴዷߒ㧘⎕უߦ⥋ࠆߣ⠨߃ࠄࠇࠆ㧚ߎࠇߪ㧘ࠦࡠ࠽⊒శ߇⏕

ਃ㊀ὐࠍᒻᚑߒߚ㔚ᭂ♽ࠍ↪޿ߡ N2 ࠟࠬਛߢߩਃ㊀ὐઃ⹺ߐࠇࠆߣหᤨߦᴪ㕙⎕უߣߥߞߡ޿ࠆ g=4mm ߦ߅ߌࠆ㜞ㄭ߆ࠄ↢ߓࠆࠦࡠ࠽߇ࡄ࡞ࠬ㔚࿶ᵄ㗡ㇱߢߩ⛘✼⎕უߦㅦᐲࠞࡔ࡜ߢߩ᷹ⷰ⚿ᨐ㧔࿑ 6(c)㧕ߣ⍦⋫ߒߥ޿㧚෸߷ߔᓇ㗀ࠍ⺞ߴߚ㧚ᓧࠄࠇߚ⚿ᨐࠍએਅߦ߹ߣ߼ࠆ㧚߹ߣ߼એ਄ߩࠦࡠ࠽㐿ᆎ㔚࿶ߩ㆑޿㧘ࠦࡠ࠽㐿ᆎᓟߩᴪ㕙ࠦࡠ࠽(1) ᱜᭂᕈߢߪ㧘⃿㔚ᭂߩ⋥ᓘ 2r=3mm ߩ႐วࠡࡖ࠶ࡊ㐳ߩㅴዷߣ㔚⇇✭๺ߩ⁁ᴫߩ㆑޿㧘㔚⇇߿ᴪ㕙〒㔌ߩ㆑޿߇⎕g=2mm એ਄ߢ㧘2r=4mm ߢߪ g=3mm એ਄ߢ⎕უߩ⚻〝߇უ㔚࿶ߦ㑐ଥߒߡ㧘ᧄታ㛎ߢߪ㧘⃿⋥ᓘ 2r=4mm ߩ g=3mm⃿㧙ᐔ᧼ࠡࡖ࠶ࡊ߆ࠄᴪ㕙ߦᄌൻߒߚ㧚ࠡࡖ࠶ࡊ㐳 g ߇ᄢ

ߣ g=4mm ߩ⎕უ㔚࿶ߦᏅ߇⷗ࠄࠇߥ߆ߞߚ߽ߩߣ⠨߃ࠄࠇ߈ߊߥࠆߎߣߦࠃߞߡ㧘⃿ਅ┵ߩ㔚⇇ߪᒙߊߥࠆ߽ߩߩ㧘ࠆ㧚߹ߚ㧘g=5mm ߢߪࠡࡖ࠶ࡊ㐳߇ᄢ߈ߊߥࠅ㧘g=4mm ߦ

ਃ㊀ὐㄭறߩᦨᄢ㔚⇇ߪ⃿ਅ┵ߩ㔚⇇ߩ 20 ୚ࠍ⿧߃ࠆ㧚Ყߴߡ㧘⃿ਅ┵߅ࠃ߮ਃ㊀ὐㄭறߩ㔚⇇߇ᒙߊߥࠆ৻ᣇ㧘ᴪߎߩࠃ߁ߥ᧦ઙਅߢߪ㧘ਃ㊀ὐ߆ࠄ⊒↢ߒߚࠦࡠ࠽߇ශട

㕙〒㔌߇㐳ߊߥࠆߚ߼⎕უ㔚࿶߇਄᣹ߒߚߣ⠨߃ࠄࠇࠆ㧚߹㔚࿶ߩ਄᣹ߦࠃߞߡ㧘࿕૕⺃㔚૕ᴪ㕙ࠍㅴዷߒ⎕უߦ⥋ࠆߚ㧘㔚⇇✭๺ߩᓇ㗀߽⠨߃ࠄࠇࠆ㧚ߎߣ߇ࠊ߆ߞߚ㧚߹ߚ㧘g=2mm ߢߪ㧘ਃ㊀ὐઃㄭࠃࠅࠦࡠ

⽶ᭂᕈߩ႐ว㧘㜞ᗵᐲࠞࡔ࡜ߦࠃࠅࠦࡠ࠽߇᷹ⷰߐࠇᆎ߼

࠽߇⊒↢ߔࠆ߇㧘⃿ਅ┵ߩ㔚⇇߇ශട㔚࿶ߩ਄᣹ߦࠃࠅ⎕ࠆ㔚࿶ߪ㧘
g=3mm ߩ႐วߦᲧߴߡ㧘
g=4mm ߩ߶߁߇1.3~6.0kVუ㔚⇇ߦ㆐ߒ㧘⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ⎕უߒߚߣℂ⸃ߢ߈ࠆ㧚㜞ߊߥߞߡ޿ࠆ㧔࿑ 5(a), (b) Frame 2㧕㧚߹ߚ㧘g=3mm ߦ߅޿(2) ৻ᣇ㧘⽶ᭂᕈߢߪ⃿㔚ᭂ⋥ᓘ 2r=3mm ߩ႐ว㧘ࠡࡖ࠶ࡊߡߪ࿑ 5(a)ߩ Frame 4 ߢᴪ㕙ࠦࡠ࠽ߩㅴዷᛥ೙߇᷹ⷰߐࠇߚ

㐳 g=3mm એ਄ߦ߅޿ߡ㧘⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߣᴪ㕙ߩਔᣇߩߦኻߒߡ㧘࿑ 5(b)ߩ g=4mm ߢߪ᷹ⷰࠍⴕߞߚ▸࿐ߢߪශߩ⎕უ⚻〝߇⷗ࠄࠇߚ߇㧘⋥ᓘ 2r=4mm ߦ߅޿ߡߪ⃿㧙ᐔട㔚࿶ߩ਄᣹ߣߣ߽ߦㅴዷߒߚ㧚ߎߩߎߣߪ㧘ᱜᭂᕈߦ߅޿

᧼ࠡࡖ࠶ࡊߩߺߩ⎕უ⚻〝ߢ޽ߞߚ㧚ਃ㊀ὐઃㄭߢࠦࡠ࠽

ߡㅀߴߚࠦࡠ࠽㐿ᆎ㔚࿶ߩ㜞ૐߦ㑐ଥߔࠆ⃻⽎߇㧘⽶ᭂᕈߩ߇⊒↢ߒ㧘㔚࿶਄᣹ߦ઻޿ᴪ㕙ࠦࡠ࠽߇ㅴዷߒߚ㧚ߒ߆ߒ㧘Ყセ⊛ශട㔚࿶ߩૐ޿㗔ၞߢ᷹ⷰߐࠇߚߣℂ⸃ߢ߈ࠆ㧚⃿㧙ᐔ᧼ࠡࡖ࠶ࡊߢ⎕უ߇↢ߓߚ㧚ߎࠇߪ㧘⽶ᭂᕈߦ߅޿

ߐࠄߦ㧘ශട㔚࿶߇਄᣹ߒߚ㗔ၞߦߟ޿ߡ࿑ 7(b)ߩ g=3mm

ߡߪ㧘ਃ㊀ὐઃㄭߩࠦࡠ࠽߿ᴪ㕙ࠦࡠ࠽߆ࠄ㧘⃿㧙ᐔ᧼ࠡߣ࿑ 7(c)ߩ g=4mm ߩ Frame 2 ࠍᲧセߔࠆߣ㧘ශട㔚࿶߇㜞޿ࡖ࠶ࡊߦ㔚ሶࠍଏ⛎ߒ߿ߔ޿⁁ᴫߦ޽ࠆߚ߼㧘⃿㧙ᐔ᧼ࠡ

g=4mm ߢߪ⃿ਅ┵ߣᐔ᧼㔚ᭂ㑆ߩࠦࡠ࠽⊒శ߇᷹ⷰߐࠇߡ
޿ࠆ߇㧘g=3mm ߦ߅޿ߡߪ⏕⹺ߢ߈ߥ޿㧚Frame 2 ߩ᠟ᓇ⚳ࡖ࠶ࡊߢ⎕უ߇ᒁ߈⿠ߎߐࠇࠆߎߣ߇␜ໂߐࠇߚ㧚(3)⃿㔚ᭂ⋥ᓘ 2r=4mm ߦ߅޿ߡ㧘ᱜ࡮⽶ਔᭂᕈߣ߽ߦࠡ

136 (40)
214

32
3
2008
㕒㔚᳇ቇળ⹹ ╙ 32 Ꮞ ╙ 3 ภ㧔2008㧕ࡖ࠶ࡊ㐳 g=3mm ߣ g=4mm ߩ⎕უ㔚࿶߇߶߷หߓ୯ߣ
ߥߞߚ㧚޿ߕࠇߩࠡࡖ࠶ࡊ㐳ߦ߅޿ߡ߽ਃ㊀ὐઃㄭ߆ࠄ
ࠦࡠ࠽߇⊒↢ߒ㧘ᴪ㕙ࠍㅴዷߔࠆ㧚ߒ߆ߒ㧘g=3mm ߩࠦࡠ࠽ߩㅴዷㆊ⒟ߢߪ㧘ශട㔚࿶ߩ਄᣹ߦ઻޿㧘ᴪ㕙ࠦࡠ࠽ߩㅴዷ㧘ᛥ೙ߩㆊ⒟߇᷹ⷰߐࠇࠆߩߦኻߒߡ㧘
g=4mm ߢߪ㧘ᴪ㕙ࠦࡠ࠽ߩㅴዷߩᛥ೙ߪ᷹ⷰߐࠇߥ߆
ߞߚ㧚ߎߩࠦࡠ࠽㐿ᆎ㔚࿶ߩ㆑޿߇ߘߩᓟߩࠦࡠ࠽ߩㅴ
ዷ㧘⎕უߦᓇ㗀ࠍ෸߷ߒߚ߽ߩߣߒߡℂ⸃ߢ߈ࠆ㧚ෳ⠨ᢥ₂ᴡ᧛㆐㓶㧦㔚᳇ቇળ⹹㧘97 (1977) 349
ቛ㑆⫃㧦㔚᳇ቇળ⹹㧘119 (1999) 232
L.G.Chiristphorou and R.J.Van Brunt: IEEE. Trans. on DEI, 2(1995) 952
4) T.Takuma and T.Kawamoto: IEEE Trans. on PAS, 103 (1984)
24865) ቛ㑆⫃㧦㕒㔚᳇ቇળ⹹, 14 (1990) 40
6) ⚦Ꮉㄖਃ㧘ㄭ⮮⧐ቁ㧘ਃᅢ଻ᙗ㧦㔚᳇ቇળ㔀⹹, 89 (1969)
18237) ⚦Ꮉㄖਃ㧘ਃᅢ଻ᙗ㧦㔚᳇ቇળ㔀⹹, 93 (1973) 420
8) ⚦Ꮉㄖਃ㧦㔚᳇ቇળ⺰ᢥ⹹ A, 111 (1991) 370
1)
2)
3)

9)

ੇᤘᢥ㧘ኹ⷏Ᏹᴦ㧘᧛ἑᵗ㧘ᩉῳᖗ㧦㔚᳇ቇળ⺰ᢥ⹹ A,
110 (1990) 846
10) ㆙⮮ᄻ዁㧦㔚᳇ቇળ⹹㧘105 (1985) 25
11) ⠀㚍ᵗਯ㧘੗ᵄẖ㧘ศ᧛ቇ㧘ખ⷏ᐘ৻㇢㧦㔚᳇ቇળ⺰ᢥ⹹ A, 114 (1994) 467
12) ⠀㚍ᵗਯ㧘੗ᵄẖ㧘ศ᧛ቇ㧘ખ⷏ᐘ৻㇢㧦㔚᳇ቇળ⺰ᢥ⹹ A, 115 (1995) 107813) ਛጊඳผ㧘ዊ㊁↰శት㧘ᄤᎹᷡ჻㧘૑㊁቟ᒄ㧦㔚᳇ቇળ⺰ᢥ⹹ A, 115 (1995) 839
14) ဈᧄ⋥ⷙ㧘࿖ਛཅੱ㧘਄㊁⑲᮸㧘ਛጊඳผ㧦㔚᳇ቇળ⺰ᢥ⹹ A, 120 (2000) 804
15) ဈᧄ⋥ⷙ㧘࿖ਛཅੱ㧘਄㊁⑲᮸㧘ਛጊඳผ㧦㔚᳇ቇળ⺰ᢥ⹹ A, 122 (2002) 849
16) ਄㊁⑲᮸㧘ဈᧄ⋥ⷙ㧘࿖ਛཅੱ㧦㕒㔚᳇ቇળ⹹㧘27 (2003)
3217) ฎ⾐ల⌀㧘ᴧ↰ሶ〝㧘਄㊁⑲᮸㧘ਛጊඳผ㧦ᐔᚑ 18 ᐕ㔚᳇ቇળో࿖ᄢળ⻠Ṷ⺰ᢥ㓸㧘1-051 (2006)18) ኅ↰ᱜਯ㧘ᴛ੖㇢㧘◉ේවศ㧦㔚᳇ቇળ㔀⹹㧘88 (1968)
110719) ੖ፉਭม㧘ᣂ㐿⵨ⴕ㧘౎ፉ᡽ผ㧦㔚᳇ቇળ⺰ᢥ⹹ B, 121(2001) 467
20) ᢧ⮮ੳ㧘᫪↰໪৻㧘ศᎹ㓉ม㧘ᣧᎹ⋥᮸㧘ᄢਭ଻ੳ㧦㔚᳇ቇળ⺰ᢥ⹹ B, 121 (2001) 449
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