Hydro Automation Erregung e

7/27/2019 Hydro Automation Erregung e

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VA TECH HYDRO

V O E S T

Aut

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&Co

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Ex c it

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Power Pla

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Mon

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Prot

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Sync

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Turb

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NE

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NEPTUN - Success integrated.

Excitation


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Excitation

The excitation system of a synchronous generator

enables to supply the energy of a drive engine

(turbine) to the power grid.

Therefore high priority is assigned to the reliability

and availability in case of system choice of excitation

systems. That goes particularly for:

the supply of self-sufficient, regulated direct current

for the rotor

enabling synchronising by exact voltage regulation

the support of the grid operation through reactive

power regulation

the increase of the block and network availability

by intelligent limiters and additional automaticcontrollers

Nowadays rotary pilot exciters are being replaced

more and more by thyristor excitation systems.

In case of still economically justifiable maintenance of

pilot exciters and when there is no high requests on

the regulation dynamics and on the improvement of

the efficiency, the operation performance improve-

ment can be achieved by exchanging an existing

voltage regulator with a modern, digital multi-function

automatic controller.

Your Target

Reduction of the maintenance work at AVR and

rotating pilot exciters M inimisation of spare part storing

O ptimisation of the existing operation and control

behaviour

Increase of the system availability

Dynamics w ith Brain Works

M arkersbach, 6 x 220 M VA,

G ermany

Shi San Ling, 4 x 222 M VA, C hina

Karkamis, 6 x 35 M VA, Turkey


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System Overview THYNE

Via permanent magnet pilot exciter

(PM G ), linked to the generator shaft:

Independent of grid influences, there-

fore full excitation system output, also

in case of short circuits at generator

terminals. Speed-dependent voltage

of PM G.

Via pilot generator, linked to the genera-

tor shaft: Independent of grid influences,

therefore full excitation system output,

even in case of short circuit at generator

terminals. Pilot generator with separate

excitation equipment.

Supply Variants

Via excitation transformer:

Preferably as shunt connection or by

external excitation. Excitation transformer

as high-voltage or low-voltage transformer,

as dry type, vacuum-impregnated or cast-

resin type, with temperature monitoring.

SUPPORTEDMACHINETYPES THYNE3 THYNE4 THYNE5 THYNE6

DC exciter l l _ _

AC exciter l l _ _

static exciter _ _ l l

DESIGNFEATURES

compact design l _ _ _

modular regulator design l l l l

digital voltage reglator l l l l

digital sequencer l l l l

nominal frequency / cps 50-400 16.7-400 16.7-400 16.7-400

max. exciter current / A (cont.) 25 50 2000 6400

redundant power converter _ m m m

MANUAL EXCITATION OR SECOND CHANNEL

man. regulator, integr. in voltage regulator l l l l

2 identical regulating channels _ m m m

automatic follow-up and change-over l l l l

SUPPLY SOURCES

PM G , single phase l l _ _

PM G , three-phase l l _ _

pilot generator (50/60 cps) l l l l

via gen. terminals (with excit. transf.) l l l l

AVAILABLE LIMITERS AND/OR ADDITIONAL FEATURES

minimum field current l l l l

maximum field current l l l l

stator overcurrent limiter l l l l

minimum excitation limiter m m m m

volts/hertz limiter l m m m

power system stabiliser (PSS) m m m m

power factor regulator l m m m

reactive load regulator l m m m

system voltage matching device m m m m

diode failure supervision l l _ _

software package WINO PER l l l l

OPTIONS FOR EXTENSION

current booster m m m m

dynamic (electrical) brake m m m m

l standard m optional _ not provided

The Common SolutionOur Products

PG


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Automation&Co

ntro

l

Excit

ation

Powe

rPlan

tMan

agem

ent

Mon

itorin

g&Diag

nosis

Protec

tion

Sync

hron

isatio

n

TurbineCo

ntro

ller

Success

integrated.

NEPTUN

www.sat-automation.com/neptun

Machine ConfigurationsWith DC exciter machine:

Low exciter output ratings, positive

and negative field and rotor

voltages possible.

Actual Value SensingSingle or three-phase voltage

sensing, with active and reactive-

current compensation for high

initial response and stability

during no-load, isolated and

parallel operation.

With AC exciter machine:

Low exciter output ratings,

positive rotor voltages possible,

no carbon brushes, therefore no

pollution.

Static excitation:

Positive and negative rotor

voltages ensure high response,

on account of direct access to

rotor; the same thyristor set can

also be used for dynamic

braking.

Current BoosterO ptional feature, to maintain a

continuous generator current in

case of generator-terminal short

circuits.

The renewal of the excitation system

achieves a quantity of advantages for the

operation:

Improvement of efficiency

Higher availability of the system by:

- fewer outages

- more rapid trouble-shooting by

diagnostic possibilities

- improved regulation characteristics

- intelligent regulator limiters (genera-

tor stays within its limit values)

- reduced maintenance actions

Higher control comfort by:

- improved overview during operation

locally

- graphic visualisation on PC

- increase of functionality of the logic

possible

- higher test- and controllability

- communication via Ethernet

Fewer pollution, dust and mechanical

problems by removal of exciter con-

verter or the DC -pilot exciter

M odern design

With new installations you have all advan-

tages mentioned from beginning.

System Exam ples


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Your Benefit

Optimal use by:

Standardised, modular system concept

Flexible adjustment to customer- and system requirements

Ergonomic and self-monitoring standard software

Redundant designs possible

(power part n + 1, 2-channel automatic controller...)

Cost reduct ion by:

Energy saving with not applicable pilot exciter

Lower pollution (brush abrasion)

Remote diagnostics and self-monitoring

Small spare part storing

Short training duration

Increase of proceeds by: Increased system availability (intelligent regulator algorithms)

Improvement of efficiency

Reduction of the downtimes

Increase of maintenance intervals

NEPTUN the integrated common solution for the secondary

technology can offer notable advantages in course of plant

expansion/refurbishment.

That means integrated advantages in case of use of further

systems (e.g. protection, synchronisation, automation & control)

additional to the existing benefits of your excitation.

Powerful communication standard (IEC 60870-5-104)

Common system concepts for remote functions

Central engineering toolkit

Simplification of the plant configuration

Decrease of engineering- and documentation expenses M inimising of additional infrastructure for signal inter-

communication

M inimising of spare parts

Liquidation of former fixed capital

Reduction of local service and maintenance action


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Technical specifications are used for purposes of product des-cription only and are not guaranteed specifications in legalterms. Subject to modifications - also in terms of technology.

VA TEC H SAT G mbH & Co. - WienM X2-002-1.00

www.sat-automation.com/neptun

ArgentiniaVA T EC H International Argentina S.A .Av. C ordoba 1561 - Piso 121055 Buenos Aires+ 54/11/4815/ 3964 Fax /3968

AustraliaVA TEC H A ustralia Pty LimitedSuite 5, Level 9100 Walker Street NorthSydney NSW 2060+ 61/2/9954/ 0722 Fax /0782

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IndiaVA TEC H International Private Ltd.6, C ommunity CentreBasant Lok, Vasant ViharNew Delhi 110057+ 91/11/614/ 2287 Fax /6833

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IranVA TEC H ELIN Tehran BranchK haled Eslamboli A ve. 21st StreetNo. 9, 2nd floorTehran 15139+ 98/ 21/871/9618 Fax /6413

ItalienVA TECH ESCH ER WYSS S.r.l.Via D aniele M anin 16/18I -36015 Schio (Vicenza)+ 39/ 0445/ 678/211 Fax /218

KoreaVA T EC H International GmbHKorea B ranch, Hong Woo B ldg.945-1, Daechi-Dong, K angnam-KuSeoul 135-280+ 82/2 /5558718 Fax /5685008

MalaysiaENTR UTECH Sdn. Bhd.16th Floor, M enara Haw ParJalan Sultan Ismail50250 Kuala Lumpur+ 60/ 3/ 27101686 Fax /2066770

VA TEC H SAT S dn. Bhd. No. 15Jalan BR P 9/1D,Perusahaan Bukit Rahman Putra,M Y -47000 Sungai Buloh+ 6/ 03/65780/ 50 Fax /60

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PhilippinesVA T EC H International GmbHRegional Headquarters ManilaSuite 401, Golden R ock B uildingSalcedo Street, Legaspi Village 1681268 Mak ati City+ 63/ 2/ 8941010 Fax /8174674

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VA TECH HYDRO GmbH & CoRepresentative O ffice Warszawaul. Stawki 2/ intraco 6pPL-00193 Warszawa+ 48/22/ 6357023 Fax 6356987

SwedenVA TEC H ELIN S venska ABP.O.B ox 5223S -10245 Stockholm+ 46/8 /6628/ 732 Fax /357

SwitzerlandVA TECH HYDR O VEVEY S.A.Rue des Deux G ares 6Case postale No. 368CH -1800 Vevey+ 41/21/925/ 7700 Fax /7703

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Hydro Automation Erregung e