High Voltage Engineering 0 _ G- Z A" d3 c
' G) M2 T8 _0 B( x, A
by Lucas J R ) J& M& a$ e, k, H) [ B+ Y+ Z% V. N. _
First Produced in Cyclostyled form 1970# U m# ^# ~! s2 {7 N
[Revised and Reproduced periodically] 6 A- C# |: C v, O* W% Y# t4 hNew Edition 1995 6 q0 C/ E5 b3 ?+ R9 `9 ORevised Edition 20013 I6 | u4 O/ C
' Z% s# A x0 c6 p$ v1 BREAKDOWN OF GASEOUS INSULATION ) ~* Y( J' [/ Y$ e& M' r
2 BREAKDOWN OF LIQUID AND SOLID INSULATION........... ..................................... 22* U. x8 M- J0 G& X% O- H t
3 LIGHTNING PHENOMENA.................................................. .......................................... 340 O! N- ^3 i3 b: _# O; n
4 HIGH VOLTAGE TRANSIENT ANALYSIS............................................................................................................... 45 * ?$ j3 N1 ^6 L! \4 ?/ \" t1 W+ V5 HIGH VOLTAGE CABLES............................................................................................................................................. 64 / x- c; a* ^$ p5 i. f+ Z0 M6 MEASUREMENT OF HIGH VOLTAGES.................................................................................................................... 91. N E' Y% P( k3 m# ?
7 HIGH VOLTAGE GENERATORS FOR TESTING .................................................................................................. 123) X+ C, ^! o. b
8 HIGH VOLTAGE SURGE GENERATORS ................................................................................................................ 132 5 X( ]& O# D& B9 HIGH VOLTAGE TESTING.......................................................................................................................................... 148* M2 Q8 p1 m# M- A$ ^
9.0 High Voltage Testing Procedure............................................................................................................................ 148 : I5 Q0 d; Q- A( o6 d& a+ _/ k8 e9.1 General tests carried out on High voltage equipment ........................................................................................ 148+ l+ m3 q7 p+ Y; U* X
9.2 Testing of solid dielectric materials....................................................................................................................... 151: k# W) C2 }, w. g( S# r
9.3 Impulse Testing......................................................................................................................................................... 153 1 n8 [8 o* |5 y2 g( `) m9.4 Voltage Distribution in a Transformer Winding.................................................................................................. 155 % \/ s; n0 j& u1 X* d9.5 Tests on Insulators.................................................................................................................................................... 158 * F/ Y% l7 c; ^" k9.6 Tests on Transformers ............................................................................................................................................. 160- U% H% x9 i% R
9.7 Tests on Cables.......................................................................................................................................................... 161 : I2 G# m, p' k! G! j8 K7 L' n9.7.1 Tests on Pressurised Cables.......................................................................................................................... 162 , P$ g% n* p1 X0 |2 x0 F9.8 Tests on High Voltage Bushings............................................................................................................................ 163& }% ^4 X# G: f4 |$ V1 e3 L
9.9 Tests on Porcelain and toughened glass insulators for overhead power lines............................................... 164/ ]8 I* h4 ^2 O% Q0 g9 p/ R
10 INSULATION CO-ORDINATION.............................................................................................................................. 166; U2 Y$ o6 Q5 a
10.0 Insulation Co-ordination......................................................................................................................................... 1664 N# n* k! d' `
10.1 Terminology .............................................................................................................................................................. 166 " c: Y! e X E" p" z; ]10.2 Conventional method of insulation co-ordination .............................................................................................. 168 - L; p( R/ O( ^% A10.3 Statistical Method of Insulation Co-ordination .................................................................................................... 169+ H! w) q7 j$ {) |2 u# k8 ~3 r% H+ p
10.3.1 Evaluation of Risk Factor ............................................................................................................................. 170 ; C8 Q }' q4 p& d, Y10.4 Length of Overhead Shielding Wire ...................................................................................................................... 170" A S) a. f! w" ~8 R; s8 F
10.4.1 Modification of Waveshape by Corona..................................................................................................... 171 0 K; I) H$ T7 E+ C10.5 Surge Protection........................................................................................................................................................ 173 # R* S. K2 c7 g+ E$ F% n' e3 E11 HIGH VOLTAGE DIRECT CURRENT TRANSMISSION..................................................................................... 184 # k5 K0 S4 Y* G$ v: O2 e4 u11.0 Historical Background............................................................................................................................................. 184 5 M/ N2 O6 h" ?11.1 Comparison of a.c and d.c transmission................................................................................................................ 185" Z" N n5 P F# n: J
11.2 Convertor arrangements and operation................................................................................................................ 1901 H/ }2 t2 x) r
11.3 Control Characteristics ............................................................................................................................................ 199 $ y' {$ f8 p. E- T6 |11.4 Classification of d.c. links........................................................................................................................................ 203 4 Q3 ^' q5 b( ]5 {( K! o8 YINDEX......................................................................................................................................................................................... 205
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