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Διπλωματική σε Υ/Σ ΥΤ

Transcript of ”¹€»‰¼±„¹® ³¹±...

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    Abstract

    The project focuses in the investigation of substations configurations and in the

    comparison of them, by taking into account several factors that affect their choice in

    substations in transmission system.

    In chapter one, we have a description of the transmission of electricity and a reference

    of the basic utility and destination of a new substation.

    In chapter two there is a presentation of different kinds of substations, giving special

    emphasis to transmission substations.

    In chapter three there is a reference in basic equipment of a transmission substation

    and a description of the components, whose continuous operation is important for the

    operation of the substation as a whole.

    In chapter four we present the parameters of a substations design and the standards

    of the selection of a substations configuration.

    In chapter five there is an analysis of all kind of configuration of transmission

    substations, with a reference in their method of operation and their advantages and

    disadvantages.

    In chapter six different types of bus protection is presented for all kinds of

    configurations.

    In chapter seven we have a comparison of the different configurations by several

    factors that affect their selection in each substation, such as reliability, cost, extent of

    ground etc. Finally we present the conclusions that come from the comparison above.

    Keywords: Configuration, Types of Substations Configuration, Reliability of

    Apparatus, Parameters of the selection of Substations Configuration, Arrangements

    Comparison.

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    Abstract .......................................................................................................................... 6

    1. ................................................................................................................. 12

    2. . .................................... 14

    2.1 ................................................................................................................. 14

    2.2 .......................................................... 15

    2.3 ......................................................................................................... 18

    2.3.1 .......................................................................................................... 18

    2.3.2 ..................................................................................... 20

    2.3.2.1 / ........................................................................................ 20

    2.3.2.2 / ......................................................................................... 21

    2.3.2.3 / ........................................................................................ 22

    2.3.3 .............................................................................. 22

    2.3.3.1 150kV/. ....................................... 24

    2.3.3.2 150/20 kV ................................... 26

    2.3.3.3 (..) ....................................................... 31

    2.3.4 SF6 (GAS INSULATED SUBSTATION) ...... 33

    2.3.4.1 GIS...................................... 34

    2.3.4.2 ....................................................................... 35

    2.3.4.3 ............................................................................................ 36

    2.3.4.4 - .......................................................................... 37

    2.3.4.5 37

    3. ......................................................................................... 39

    3.1 ............................................................................................................ 39

    3.2 (/) ..................................................................................... 39

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    3.3 ....................................................................................... 43

    3.4 ................................................................................................ 44

    3.4.1 ...................................................................... 49

    3.4.1.1 ................................................................................................... 49

    3.4.1.2 ............................................. 51

    3.5 ................................................................................................................... 53

    3.5.1 .......................................................................................................... 53

    3.5.2 T ................................................................................................. 53

    3.5.3 .......................................................................................... 54

    3.5.4 ........................................... 55

    3.6 ......................................................................................................... 56

    3.7 ..................................................................................................... 57

    3.7.1 .................................................. 58

    3.8 ......................................................................................................... 59

    3.8.1 ................................................................... 59

    3.8.2 ................................................................... 59

    3.9 - ............................................................. 60

    4 . ....................................... 61

    4.1 /. ................................................................................... 61

    4.2 ........................................................................... 62

    4.3 /. ...................................................................... 66

    4.4 .......................................................................... 69

    5. .................................................................................. 72

    5.1 ............................................................................................ 72

    5.2 ..................................................................... 76

    5.3 ................................................... 78

    5.4 ........................................................................... 81

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    5.5 1.5 (breaker and a half) ........................................................ 87

    5.6 , (Breaker and a third bus

    arrangement)............................................................................................................. 95

    5.7 . .................................... 97

    5.8 .............................. 101

    5.9 .......................................................................... 102

    5.10. ................................................................. 104

    6. ............................................................................................ 106

    6.1 .......................................................................................................... 106

    6.2 . ........................................................................ 108

    6.3 . ................................................................... 110

    6.4 ............................................... 110

    6.5 . ......... 112

    6.6 - . ........................................ 114

    6.7 - . ..................................... 116

    6.8 . ..................................................... 116

    6.9 1.5 ................................................................... 119

    6.10 . ........... 119

    6.11 ....................................................................... 122

    6.12 . ......................................................................... 124

    6.12.1 . ........... 124

    6.12.2 . .................. 126

    6.12.3 ............ 127

    6.12.4 . .............................. 130

    6.13 . ............................ 130

    6.13.1 . ......................................................... 131

    6.13.2 . ........................................................ 131

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    6.13.3 . ................................................................ 133

    6.14 . ............................................................................. 136

    7. . ................................. 137

    7.1 . ....................................... 137

    7.2