Torsten Lund - PowerFactory and DSL

P o w e r Fa F a ct ct o r y a n d D SL SL m o d e l s Presentation at DTU December December 14, 2011 Torsten Lund

Th r e e m a i n si m u l a t i o n t y p e s 1.

2.

3.

Electro Magnetic Transients (EMT) 1.

All state variables of the system are modeled

2.

Both AC and DC transients are considered

3.

Suitable for simulation of fast transients

Root Mean Square (RMS) (Fundamental frequency) 1.

Only the fundamental frequency part is considered.

2.

The differential equations of the network are reduced to algebraic equations by elimination of the corresponding state variables.

3.

Machine fluxes, Machine rotor speeds and controllers are modeled as state variables

Load Flow 1.

An equilibrium where the derivatives of all state variables are zero is found.

D i f f er e n t Po w e r Sy s t e m Si m u l a t i o n T o o ls

EMT

RMS

LoadFlow

PSCAD®

Yes

(Yes)

No

SIMPOW®

Yes

Yes

Yes

PowerFactory®

Yes

Yes

Yes

PSS/E®

No

Yes

Yes

Po w e r Fa ct o r y •

Power Factory is an integrated power system analysis tool from the German company DIgSILENT (DIgital SImuLator for Electrical NeTwork)

•

The development of DIgSILENT software began in 1976.

•

DIgSILENT Version 7 was the world ’s first power system analysis software with an integrated graphical one-line interface.

•

One of the other strengths of the program was the object oriented database structure.

Fe at u r e s ( f r o m t h e ir w e b si t e ) •

Load Flow and Fault Analysis of complete AC/DC network repres entation, and allows meshed and mixed 1-, 2-, and 3-phase AC and/or DC networks to be modeled.

•

Dynamic Simulation

•

EMT Simulation

•

Voltage Stability Analysis

•

Eigenvalue Analysis

•

System Identification

•

Protection Analysis:

•

Harmonic Analysis

•

Reliability Analysis

•

Production Planning

•

Contingency Analysis

•

Power Electronic Device Modeling

•

Grounding

•

A/D Interfacing

•

Interface for SCADA/GIS/NIS

•

Compatibility with other software systems such as PSS/E & PSS/U

•

Multi-User Database and User Accounting

•

Low Voltage Network Analysis

•

Distribution Network Optimization

•

IEC Cable Sizing

•

Advanced Tools: Optimal Power Flow and Production Planning

D at a b a se st r u c t u r e

      T       N       E       L       I       S      g       I       D

Si n g l e l i n e g r a p h i c 110kV Einspeisung

~

V -45.00 0.00

HV

110.407 1.004 2.813

-45.00 0.00 89.67

   1   r    T

45.00 4.42 89.67

MV

20.171 1.009 -141.575

-45.00 -4.42 89.67

   2   r    T

45.00 6.83 89.67

LV

3.350 1.015 -138.551

45.00 6.83

PWMGrid-Side -45.00 0.00

DC Bus

7.260 1.100 0.000

45.00 0.00

-0.00 0.00

DC Capacitor

-45.00 -0.00 PWMGenerator-Side

Rec Gen

3.286 0.996 -5.185

-45.00 -0.00

 .  . 90.37   e    R   s   e    i   r   e    S 45.00

4.08 90.37

Gen

3.300 1.000 0.000

45.00 4.08 94.14

G ~ WGen30x1.5MW

DIgSILENT GmbH PowerFactory 14.1.2

Bechmarking CDSG WKA, 30*1.5MW

Project: DENA Graphic: CDSG WP Date: 12/14/2011 Annex:

DSL-models DIgSLENT Simulation language

Structure

Co m p o s it e f r a m e s       T       N       E       L       I       S      g       I       D

PWM Frame:

Speed Measurement Elm*

speed

P_ref

MPT ElmMpt*

0

PLL_R ElmPhi*

P

PowerMeas_Gen StaPqmea*

0

1

cosref_R sinref_R

0

1

1

Rectifier ElmVsc* Vac_ref

Vac_Gen

AC Gen Voltage StaVmea*

2

3

Vdc_ref

0

Vac-P Controller ElmDsl* 4 1

id_ref_R

iq_ref_R

2

3

5

6

7    t   x   e _    d    i

0

AC Grid Voltage StaVmea*

Vac_Grid

E.ON Prot ElmDsl*

sw

1

0

iq_ext

2

1

Vdc_ref

DC Voltage StaVmea*

2 0

Vdc

1 Q_ref

Power Meas_Grid StaPqmea*

Q

id_ref_I

0

Vdc-Q Controller ElmDsl*

3

iq_ref_I

1

4

Inverter ElmVsc*

5

0

PLL_I ElmPll*,ElmPhi* 1

cosref_I sinref_I

2

3

Co m p o s it e m o d e l       T       N       E       L       I       S      g       I       D

Vac-P Control:

sw

0

P_ref

1

i_Max 2

P

-

P_Filt

MeasFilt TfP

dP

0

PI Ctrl_lim KP,TP 1

i_Min

id_ext

3

   1    f   e   r    d    i

0

Max 1

Vdc_ref

4

i_Max

5

Vdc

MeasFilt TfVdc

-

Vdc_F

dVdc

   2    f   e   r    d    i

   f   e   r    d    i

iMax

PI Ctrl KVdc,TVdc

-

0

   V   a    t    l   e    d

i_Min

1

i_Max

6

Vac

MeasFilt TfVac

Vac_Filt

dVac

PI Ctrl KVac,TVac

i_Min

7

Vac_ref

0

absolute limite..

iqref

1

id_ref iq_ref

0

1

Fi r s t o r d e r f i l t e r       T       N       E       L       I       S      g       I       D

Vac-P Control:

sw

0

P_ref

1

i_Max 2

P

-

P_Filt

MeasFilt TfP

dP

0

PI Ctrl_lim KP,TP 1

i_Min

id_ext

3

   1    f   e   r    d    i

0

Max 1

Vdc_ref

4

i_Max

5

Vdc

MeasFilt TfVdc

-

Vdc_F

dVdc

   2    f   e   r    d    i

   f   e   r    d    i

iMax

PI Ctrl KVdc,TVdc

-

0

   V   a    t    l   e    d

i_Min

1

i_Max

6

Vac

MeasFilt TfVac

Vac_Filt

dVac

PI Ctrl KVac,TVac

i_Min

7

Vac_ref

0

absolute limite..

iqref

1

id_ref iq_ref

0

1

I n i t i a li za t i o n       T       N       E       L       I       S      g       I       D

Vac-P Control:

sw

0

P_ref

1

i_Max 2

P

-

P_Filt

MeasFilt TfP

dP

0

PI Ctrl_lim KP,TP 1

i_Min

id_ext

3

   1    f   e   r    d    i

0

Max 1

Vdc_ref

4

i_Max

5

Vdc

MeasFilt TfVdc

-

Vdc_F

dVdc

   2    f   e   r    d    i

   f   e   r    d    i

iMax

PI Ctrl KVdc,TVdc

-

0

   V   a    t    l   e    d

i_Min

1

i_Max

6

Vac

MeasFilt TfVac

Vac_Filt

dVac

PI Ctrl KVac,TVac

i_Min

7

Vac_ref

0

absolute limite..

iqref

1

id_ref iq_ref

0

1

D ef i n i n g e v e n t s

D ef i n i n g r e su l t s t o r e co r d

I n i t i a li zi n g t h e m o d e l

St a r t i n g t h e si m u l a t i o n

Pl o t t i n g t h e r e su l t s