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High Voltage Engineering
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& V7 n# H$ M8 t' v1 g5 Qby Lucas J R % U* u) @' m4 S8 N# t( ~) t
) N1 a4 S! D; iFirst Produced in Cyclostyled form 1970
3 g$ k" v" m: D3 [( j/ i[Revised and Reproduced periodically]5 J9 p+ `% F- x# S% n/ c$ {
New Edition 19956 x) d- K# o! D& t7 j \& E* D
Revised Edition 2001
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1 BREAKDOWN OF GASEOUS INSULATION
0 j. [' {) o- V" y* U! c; b# f$ L2 BREAKDOWN OF LIQUID AND SOLID INSULATION........... ..................................... 22
) R: S# m8 H$ h( G! L3 LIGHTNING PHENOMENA.................................................. .......................................... 34: I1 W# i9 l! z( S% p
4 HIGH VOLTAGE TRANSIENT ANALYSIS............................................................................................................... 45- O5 v1 r1 h' u' z
5 HIGH VOLTAGE CABLES............................................................................................................................................. 64
! Q3 l$ e/ j# m) I) ^6 MEASUREMENT OF HIGH VOLTAGES.................................................................................................................... 918 E ~/ u! |) I6 m, D1 U5 N- V
7 HIGH VOLTAGE GENERATORS FOR TESTING .................................................................................................. 1236 ^/ o* c7 T7 T* v3 r) G( t$ \
8 HIGH VOLTAGE SURGE GENERATORS ................................................................................................................ 132
1 l& W4 d1 H% [: g- e9 HIGH VOLTAGE TESTING.......................................................................................................................................... 148
! z1 U( Z1 j% S9.0 High Voltage Testing Procedure............................................................................................................................ 1485 P; f" D( G( z" e, `
9.1 General tests carried out on High voltage equipment ........................................................................................ 148
7 T; d( f w5 P3 B+ y9.2 Testing of solid dielectric materials....................................................................................................................... 151# W. G! [+ j" f9 _; b
9.3 Impulse Testing......................................................................................................................................................... 153
! Z. E1 q1 m" p5 K- E9.4 Voltage Distribution in a Transformer Winding.................................................................................................. 155
9 q/ }3 k# W6 I9.5 Tests on Insulators.................................................................................................................................................... 158
+ T! j3 H h: @% C# W9.6 Tests on Transformers ............................................................................................................................................. 160" u6 z9 O! n! o; {
9.7 Tests on Cables.......................................................................................................................................................... 161
/ G$ q& l: {! }2 y9 r# a G+ X/ h* K4 J9.7.1 Tests on Pressurised Cables.......................................................................................................................... 162
% Y7 v# r) [% F8 {+ ?9.8 Tests on High Voltage Bushings............................................................................................................................ 163* y- Z6 H$ |* u4 `8 p
9.9 Tests on Porcelain and toughened glass insulators for overhead power lines............................................... 164
: w2 c" X$ I5 S- T% I$ E2 q10 INSULATION CO-ORDINATION.............................................................................................................................. 166
" a; n+ U" @( W& Y10.0 Insulation Co-ordination......................................................................................................................................... 166
% g, U4 `( ~8 y* K! H10.1 Terminology .............................................................................................................................................................. 166
' z: o; P( V! I4 g5 b m0 ]* n10.2 Conventional method of insulation co-ordination .............................................................................................. 168) H: {+ O, t9 d) M9 s6 V
10.3 Statistical Method of Insulation Co-ordination .................................................................................................... 169$ i7 V: B5 w9 \( \7 n
10.3.1 Evaluation of Risk Factor ............................................................................................................................. 170
; x+ {% b9 h6 _' E- J( R5 N; }' K10.4 Length of Overhead Shielding Wire ...................................................................................................................... 170
$ A& e- L+ Y# J! H3 \10.4.1 Modification of Waveshape by Corona..................................................................................................... 171
. U8 g) C: i2 E- ^10.5 Surge Protection........................................................................................................................................................ 173
0 E, J/ j6 A W( x1 v* N2 `11 HIGH VOLTAGE DIRECT CURRENT TRANSMISSION..................................................................................... 184
4 B9 @% x6 q( Y# ?+ A% x; j$ y, E11.0 Historical Background............................................................................................................................................. 1848 L0 ^9 F3 E) O: s
11.1 Comparison of a.c and d.c transmission................................................................................................................ 1858 |# r5 n- A+ l# W' j& [; E
11.2 Convertor arrangements and operation................................................................................................................ 190
: Z5 U. J5 s/ J- d' @11.3 Control Characteristics ............................................................................................................................................ 199
1 u9 ~% O1 f" F# K H5 v7 \11.4 Classification of d.c. links........................................................................................................................................ 203
2 a2 x' d- ]( ?3 d/ t& tINDEX......................................................................................................................................................................................... 205 |
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