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Page: 1 / 12 www.SimcoCable.com
SIMCO
XLPE
XLPE
XLPE
XLPE
Page: 2 / 12 www.SimcoCable.com
SIMCO
XLPE
XLPE
XLPE
5mm
5±1 μm3±1 μm
3mm
10⁰C/min
b
DC
X-Y
Page: 3 / 12 www.SimcoCable.com
SIMCO
3e
3d3e
Page: 4 / 12 www.SimcoCable.com
SIMCO 3e
XLPE
4a4b4c
3a3c
5a
5b5b
A4ABC5b
4B4C4B4C
b5b
3bac5b
Page: 5 / 12 www.SimcoCable.com
SIMCO
A , B , C
Page: 6 / 12 www.SimcoCable.com
SIMCO
XLPE
4a
4b4c
D/L
df
df
4a4b4c
Page: 7 / 12 www.SimcoCable.com
SIMCO df=1df
df
df
D/L
D/L
LDD/L
D/LD/L
9a9b
9b
9b
K2000Hz>K250Hz>K100Hz 0.03 : 0.012 : 0.0067K2000Hz : K250Hz : K100Hz
XLPE
Page: 8 / 12 www.SimcoCable.com
SIMCO
Page: 9 / 12 www.SimcoCable.com
SIMCO
L/t D/L df
PD
PD
PDPD
3e
XLPE
XLPE
XLPE
XLPE2R2r
XLPEα∆V
∆𝑉 = 𝑙.𝛼.∆𝑡.𝜋 𝑅2 − 𝑟2 − 𝑅2 1 − 𝛼.∆𝑡 2 − 𝑟2 ∆𝑉 = 𝑙.𝜋𝑅2𝛼2∆𝑡2 2 − 𝛼.∆𝑡
l∆tα.∆t << 1
∆𝑉 = 2𝑙.𝜋 𝑅𝛼.∆𝑡 2
XLPEr=11.3 mmR=29.8 mm
α=15*10-5
/KXLPE10*10-5
20*10-5
XLPE
∆𝑉
𝑉∗ 100% =
2𝑙𝜋 𝑅𝛼∆𝑡 2
𝑙𝜋 𝑅2−𝑟2 ∗ 100% = 0.103%
Page: 10 / 12 www.SimcoCable.com
SIMCO b=1μmm1cm
3
𝑛/𝑉 =∆𝑉/∆𝑣
𝑉=
2𝑙𝜋 𝑅𝛼∆𝑡 2
4
3𝜋𝑏3 .𝑙𝜋 𝑅2−𝑟2
𝑛/𝑉 = 2.46 ∗ 108 (𝑁𝑢𝑚𝑏𝑒𝑟/𝑐𝑚3)
XLPE
XLPE
XLPE
XLPE
10a10b
Page: 11 / 12 www.SimcoCable.com
SIMCO
𝑤 =𝑄𝑈
2
QUV0
𝑉0 =𝑤
𝑤𝑝=
𝑄𝑈
2𝑤𝑝
wpJ/cm3
QmL
𝑄𝑚 = 𝛼. 𝐿𝛽
αβ
L
𝑉 =𝛼𝑈𝐿𝛽
2𝑤𝑝
XLPE
XLPE
L-tdf-tD/L-t
PD
Page: 12 / 12 www.SimcoCable.com
SIMCO
PD
XLPE
XLPE
[1] : electrical tree
[2] : morphology
[3] : double structure
[4] : residual stress
[5] : branch
[6] : bush
[7] : bine-branch
[8] : pine-branch
[9] : expansion coefficient
[10] : dynamic fractal dimension
[11] : growth rate
[12] : partial high temperature
[13] : amorphous
[14] : needle-plate
[15] : shrinkage
[16] : aromatic
[17] : spherulite
[18] : Partial high gas pressure and high temperature
[1] : X. Zheng and G. Chen , “ Propagation Mechanism of Electrical Tree in XLPE Cable Insulation by
investigating a Double Electrical Tree Structure “ , IEEE Transactions on Dielectrics and Electrical
Insulation, Volume 15, Issue 3, Page 800 - 807, June 2008