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Power Generation 1

Kodierung

24.01.2006

Mapna 22DTOperator Trainingon Static Excitation Equipment

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 2

Basics of Static Excitation Equipment

Why do we need excitation systems?

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 3

Basics of Static Excitation Equipment

Some historic steps towards synchronous generators

1832 Construction of the first electrical generatorby Hyppolite Pixii utilising the induction principle withsteel magnets

Supply of arc lamps

Supply of galvano-technical systems

No transportation of electrical energy atthat time

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 4

Basics of Static Excitation Equipment

Some historic steps towards synchronous generators

1867 Presentation of the first self-excited electrical machine by Werner von Siemens at the

Paris World Exhibition

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 5

Basics of Static Excitation Equipment

Some historic steps towards synchronous generators

~ 1880 Construction of the first centralized power units in Europe for the supply ofelectrical lamps

1885 Commissioning ofthe first German powerstation in Berlin (supply ofconsumers within area of

800 m around it)

1887 Construction of the first 3 phasegenerator by A. Haselwander

1891 First 3 phase power transmission frompower station Lauffen to the Electro-technical

Exhibition in Frankfurt / M. (175 km)

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 6

Basics of Static Excitation Equipment

Some historic steps towards synchronous generators

20th century: Further improvement of power generation and distribution

1982 Commissioning of the worlds biggest single shaft turbo-set of the NPP Isar2(Landshut, Germany)

Isar2, rated data of the generator:n = 1500 min-1S = 1640 MVAU = 27 kVI = 35 kA

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 7

Basics of Static Excitation Equipment

For the induction of a 3 phase voltage in asynchronous machine .

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 8

Basics of Static Excitation Equipment

For the induction of a 3 phase voltage in asynchronous machine a rotating direct magnetic fieldis required

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 9

Basics of Static Excitation Equipment

Rectifiers are used to make D.C. for the rotor field.Early rectifiers were mercury vapour rectifiers.

Input: 3AC / 220 Volt / 75 Amp. / 50 HzOutput: DC 100/140 Volt / 150 AmpereOutput: DC 140/165 Volt / 65 Ampere

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 10

Basics of Static Excitation Equipment

Circuit diagram of a mercury vapour rectifier:

3 phase AC input

DC output

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 11

Basics of Static Excitation Equipment

Modern excitation systems are designed

as brushless excitation

systems

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 12

Basics of Static Excitation Equipment

or

as static excitation systems

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Operator Training on Static Excitation Equipment24.01.2006 Power Generation 13

Basics of Static Excitation Equipment

Questions for design:Rating of

excitation

transformer

Rating ofexcitationequipment

Parameters andfeatures of controller