svc plus.ppt [schreibgeschützt] - energy · 3 10-2009 e t ps sl/re power transmission division svc...

1 10-2009 Power Transmission DivisionE T PS SL/Re1 Power Transmission DivisionE T PS SL/Re10-2009

Mehr Spannungsqualität im Netz –

mit SVC PLUS®

Improvement in Voltage Quality for

Power Systems – with SVC PLUS®

K. UeckerD. RetzmannM. Claus A. Zenkner

2 10-2009 Power Transmission DivisionE T PS SL/Re

General Features of VSC* FACTS

2 E T PS SL/Re10-2009 Power Transmission Division

Grid Access for Wind Farms and Renewables

Elimination of Voltage Fluctuations and Flicker

Low Space Requirements

VSC Technology makes it feasible

High dynamic Performance

* VSC: Voltage-Sourced Converter

SVC PLUS offers additional Benefits


SVC PLUS – a wide Range of Configuration Possibilities

3 Power Transmission Division10-2009 E T PS SL/Re

Containerized Solutions:SVC PLUS S: +/- 25 MVArSVC PLUS M: +/- 35 MVArSVC PLUS L: +/- 50 MVAr

Open Rack Solution (Building):SVC PLUS C: +/-100 MVAr

SVC PLUS Hybrid (Option):MSR (Mechanically Switched Reactors)

MSC (Mechanically Switched Capacitors)

HV

LV

MSR MSC

8 kV – 36 kV

SVC PLUS+/-25 ... +/ -200 MVAr

Up to 4 parallel L-Units: +/- 200 MVAr


SVC PLUS with MMC: a new Member of theFACTS Community – Modularity answering every Challenge


System Voltage (kV)

Reactive Power (MVAr)


SVC PLUS – A View of the Technology

Cooling System Converter Control & Protection


SVC PLUS – a highly flexible System

6 Power Transmission DivisionE T PS SL/Re10-2009

Siemens uses MMC Technology(Modular Multilevel Converter)

Low Generation of Harmonics

Low Level of HF-Noise

Low Switching Losses

No Snubbers required


The Evolution of SVC PLUS and VSC Technology

7 Power Transmission Division

Power Electronic Devices:

IGBT in PP IGBT ModuleGTO / IGCT

E T PS SL/Re10-2009

Topologies: Two-Level Three-Level Multilevel


SVC PLUS: HMI, local and remote Control

Power Transmission DivisionE T PS SL/Re10-2009

Local: WinCC, PC

Remote: SCADA Interface

8

External Devices

SVC PLUS

External Devices


SVC PLUS: Converter, Control and Protection

Power Transmission Division9 E T PS SL/Re10-2009


SVC PLUS: Advanced Control System


SIMATIC TDCPlant CoordinationReference ValuesMeasurements

PLUSCONTROLCurrent ControlConverter Coordination

GIB on Power ModuleCapacitor ProtectionPiloting of IGBT DriversDC Voltage Measurement


Layout SVC PLUS L: +/- 50 MVAr


21 m

(69

feet

)

25 m (82 feet)


Layout SVC PLUS 2 x L: +/- 100 MVAr


Dimensions in m


Layout SVC PLUS System, maximum Configuration


4 SVC PLUS with4 external devices


Space Requirements – Example of +/- 50 MVAr:SVC PLUS L versus SVC “Classic”


Space Saving


SVC PLUS: Example of Factory Acceptance Tests – Nuremberg, Germany



Single Line Diagram of SVC PLUS in Comparison with SVC “Classic“


SVC PLUSSVC PLUSSVC “Classic”SVC “Classic” SVC PLUSSVC “Classic”

Variable Impedance Controlled Voltage Source

STATCOM = Static Synchronous Compensator – with Multilevel


SVC PLUS – the Operation Principle


H H

H H

H H

L1

L2

L3

vconv 12

vconv 23

vconv 31

i12

i23

i31

i1

i2

i3

L

L

L

AC Equivalent

Xfmrs, Lines Loads

VSC

Electronic Generatorfor Reactive PowerVSC =

Voltage Stabilization

18 10-2009 Power Transmission DivisionE T PS SL/Re18 Power Transmission DivisionE T PS SL/Re10-2009

Power Module 1 Power Module 2 Power Module 3 Power Module 4 Power Module n

vconv 12

Lv 12conv 12v

iconv 12

SVC PLUS – Modular Multilevel Converter

Conv 12Conv 12

SVC Voltage v12


SVC PLUS: The Power Module


IGBTs

Bypass Switch

GIB (Gate-Interface Board)

DC Storage Capacitor


From Power Module to Converter –the Multilevel Voltage Generation


Power Module with DC Capacitor

vv


States and Current Paths of a Power Module in the MMC Topology – an Advanced Solution


ON ON

OFF OFF

C uDC

ON OFF

OFF ON

C VDC+ VDC

Capacitor charging/discharging

Capacitor bypassed“Off“ State

“On“ State


Harmonics of SVC PLUS in Comparison with SVC “Classic”



SVC PLUS: V/I Diagram – Current Source


Iprim(pu)

Vprim(pu)

0 0.5 1.0 1.5-0.5-1.0-1.5

0.5

1.0

1.5

continous Operating Area of SVC PLUS

time limited Operating Area of SVC PLUS

Capacitive Current Inductive Current

STATCOM:Current-SourceCharacteristics

Jump next Page (SVC “Classic”)


SVC “Classic”: Examples of V/I Diagrams

ISVC (QSVC)

VSVC


1.0

Voltage Control Mode

• w/o slope

• with slope

• w/o Slope• with Slope

Reactive Power Control Mode

1.8

1.1

VSVC

ISVC

SVC: Impedance Characteristics




0.25 0.25


SVC PLUS versus SVC “Classic” –Loss Characteristics


0,0

0,5

1,0

1,5

-1 -0,5 0 0,5 1Q in pu

P in

%

SVC PLUS SVC Classic

capacitive inductive


SVC PLUS – Control Features


SVC PLUS – Standard Control FunctionsVoltage ControlReactive Power Control Control of up to 4 External Devices

SVC PLUS – The Control OptionsPower Oscillation DampingVoltage Unbalance ControlCos φ ControlFlicker Control

SVC PLUS – Internal ControlsAdaptive Gain ControlDC ControlTransformer Overload ControlOver & Undervoltage Strategies


The Advanced SVC PLUS Solution


Source: UCTE Interim Report 10-27-2003Rating: up to +/- 200 MVAr

8 Systems in 4 Transmission Projects:

Dynamic Voltage Support

2009 - 2011


Grid Access of Green Energy with SVC PLUS:Thanet, UK – 2 SVC PLUS Systems for 300 MW Wind Farm


SVC PLUS:2 x ±35 MVAr in parallel132 kV / 13.9 kV

2009


Grid Access of Green Energy with SVC PLUS:Greater Gabbard, UK – 3 SVC PLUS Systems

29 10-2009 E T PS SL/Re

SVC PLUS:3 x ±50 MVAr in parallel132 kV / 13.9 kV

Power Transmission Division

World’s largest Offshore Wind Farm

2011


Power Quality in AC Systems 2 SVC PLUS Systems – Kikiwa Project, South Island, New Zealand


SVC PLUS:2 x ±35 MVAr in parallel220 kV / 11 kVDynamic Voltage Support during and after AC Line Faults(Voltage Dip Compensation)

2009


Power Quality in AC Systems SVC PLUS – Mocuba Substation, Nampula, Mozambique


SVC PLUS:±35 MVAr33 kVDynamic Voltage Stabilization Reactive Power Control

2010


Power Quality for Industrial Systems SVC PLUS, ThyssenKrupp, Mobile County, Alabama, USA

Power Transmission Division32 10-2009 E T PS SL/Re

SVC PLUS for new Steel Plant±100 MVArOpen Rack SolutionFlicker Compensation

2010


Benefits of Innovations:

Power Transmission DivisionE T PS SL/Re10-2009

Siemens uses SVC PLUS Technologyalso for Traction Supply Converters


Intelligent Solutions for Power Transmission

with with FACTSFACTS & &

HVDCHVDC fromfrom

HVDC HVDC PLUSPLUSandand SVCSVC PLUSPLUS

Now available –with VSC PLUS Technology

SiemensSiemens

… and the Lights will keep shining !


Intelligent Solutions for Power Transmission

SustainabilitySustainability &&

SecuritySecurity

Thank You for your Attention !

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svc plus.ppt [schreibgeschützt] - energy · 3 10-2009 e t ps sl/re power transmission division svc...

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