ee es 2014 0836 rc_protocolo de pruebas norgener angamos

AES Gener CHILE

PROTOCOLO DE PRUEBAS DE PSS CT Norgener y Angamos

Proyecto EE-2014-144

Informe Tcnico EE-ES-2014-0836

Revisin C

Power System Studies & Power Plant Field

Testing and Electrical Commissioning

ISO9001:2008 Certified

07/11/2014

Tel +54 341 4516 422 www.estudios-electricos.com

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P:EE-2014-144/I:EE-ES-2014-0836/R:C No se autorizan copias del presente documento sin autorizacin previa por

escrito de ESTUDIOS ELECTRICOS S.A. 1/16

Este documento EE-ES-2014-0836-RC fue preparado para AES Gener por Estudios Elctricos.

Para consultas tcnicas respecto del contenido del presente comunicarse con:

Ing. Alejandro Musto

Coordinador Dpto. Estudios

[email protected]

Ing. David Perrone

Departamento de Estudios

[email protected]

www.estudios-electricos.com

Este documento contiene 16 pginas y ha sido guardado por ltima vez el 07/11/2014 por

David Perrone, sus versiones y firmantes digitales se indican a continuacin:

Rev Fecha Comentario Realiz Revis Aprob

A 22/10/2014 Para revisin. DP AM FL

B 23/10/2014 Mayor detalle pruebas durante

interconexin SADI-SING. DP AM FL

C 07/11/2014 Mayor detalle, traduccin de pruebas a

ingls. DP AM FL


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1 INTRODUCCIN ............................................................................................................................. 3

2 TAREAS / Tasks .............................................................................................................................. 4

2.1 CARTA GANTT ........................................................................................................................... 4

3 CT ANGAMOS ................................................................................................................................. 5

3.1 Curva de Carga (Load Profile) ..................................................................................................... 5

3.2 Measurement of local mode damping ........................................................................................... 6

3.3 Effects of variation in the mechanical power .................................................................................. 7

3.4 Maximum Gain .......................................................................................................................... 8

4 CT NORGENER ............................................................................................................................... 9

4.1 Curva de Carga (Load Profile) ..................................................................................................... 9

4.2 No-load test ............................................................................................................................ 10

4.3 Measurement of local mode damping ......................................................................................... 11

4.4 Effects of variation in the mechanical power ................................................................................ 12

4.5 Maximum Gain ........................................................................................................................ 13

5 Interconexin SADI-SING .............................................................................................................. 14


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1 INTRODUCCIN

El presente documento establece el protocolo de pruebas a realizar en las centrales

NORGENER y ANGAMOS, con el objeto de re-ajustar y validar los parmetros de cada estabilizador

de sistemas de potencia (PSS), optimizando su capacidad de amortiguamiento a baja frecuencia;

especficamente en el rango de 0,25 a 0,35Hz.

Los nuevos parmetros a implementar derivan de un estudio de ajuste robusto de

estabilizadores, documentado en el informe tcnico EE-ES-2014-0888.

La eficacia de estos nuevos ajustes ser finalmente validada a travs de las pruebas de

interconexin SING-SADI, ya que dicha interconexin promover oscilaciones de potencia de modo

interrea del orden de 0,3Hz. Estas pruebas sern realizadas luego del reajuste de los

estabilizadores y contemplando distintos niveles de ganancias en los mismos.

Para el desarrollo de los reajustes y pruebas en terreno, se contempla una planificacin

conservadora de un da por cada unidad. Para esto, Estudios Elctricos pondr a disposicin en

planta al mismo especialista desarrolle los estudios previos de ajuste, para brindar soporte y

supervisar la implementacin de los ajustes.

This document establishes the protocol for the test to be performed in ANGAMOS and NORGENER

plants in order to re-adjust and validate the parameters of each power system stabilizer (PSS),

optimizing damping capacity at low frequency; specifically in the range of 0.25 to 0,35Hz.

The new parameters derived from a study of robust adjustment stabilizers; document ID EE-ES-

2014-0888.

The effectiveness of these new settings will eventually be validated through testing interconnection

SING-SADI, as this will promote interconnection of interarea power oscillation mode 0,3Hz order.

These tests will be made after the readjustment of the stabilizers and considering different levels

of gains in them.

For the development of the adjustments and field testing, a conservative planning a day

contemplated by each unit. An Estudios Elctricos engineer will be on site to support and supervise

the implementation of the adjustments.


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2 TAREAS / Tasks

El proyecto de reajuste de estabilizadores contempla las siguientes tareas en campo:

The stabilizers readjustment project includes the following tasks:

CT ANGAMOS

o ANSALDO: Ensayos, registros y modificacin de ajustes de los estabilizadores

conforme a los ajustes resultantes de los estudios. Tests, records and modifying stabilizers settings according to the adjustments resulting from the studies.

o ESTUDIOS ELCTRICOS: Provisin de ajustes y supervisin de pruebas. Settings supply and test supervision.

o AES GENER: Soporte en sitio. Site support

CT NORGENER

o MITSUBISHI: Ensayos, registros y modificacin de ajustes del regulador de tensin

y los estabilizadores conforme a los ajustes resultantes de los estudios. Tests,

records and modifying stabilizers and voltage regulator settings according to the

adjustments resulting from the studies.

o ESTUDIOS ELCTRICOS: Provisin de ajustes y supervisin de pruebas. Settings

supply and test supervision.

o AES GENER: Soporte en sitio. Site support

2.1 CARTA GANTT

Fecha / Date LUNES

17/11/2014 MARTES

18/11/2014 MIRCOLES 19/11/2014

JUEVES 20/11/2014

VIERNES 21/11/2014

SBADO 22/11/2014

Da / ay 1 2 3 4 5 6

Lugar Place

Tareas Tasks

PSS ANGAMOS U1 y U2

AVR y PSS NORGENER U1 y U2

RESERVA SPARE

PRUEBAS TESTS SADI-SING

CT ANGAMOS

T.A. ANSALDO (EXECUTION)

Ajustes y registros. Test U1 y U2

- - - Registros Record

Estudios Elctricos (SUPERVISION)

Supervisin - - - Supervisin

CT NORGENER

T.A. MITSUBISHI (EXECUTION)

- - Ajustes y registros.

Test U1 y U2 -

Registros Record

Estudios Elctricos (SUPERVISION)

- - Supervisin - Supervisin


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3 CT ANGAMOS

3.1 Curva de Carga (Load Profile)

Durante los das 1 y 2 se evaluarn las unidades ANGAMOS U1 y U2. Se prev la evaluacin

de una unidad por da conforme al siguiente diagrama de carga.

On days 1 and 2 ANGAMOS units U1 and U2 will be evaluated. Evaluation of one unit per day

according to the following load profile, is expected.

-100

-50

0

50

100

150

200

250

300

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

ANGAMOS - Diagrama de Carga (Load Profile)

P (MW) Q (MVAr)

Testing schedule

Hora P (MW) Q (MVAr) Tipo de Prueba Detalles

Time [h] Active Reactive Test Details

1 260 0 - Operacin prevista / Scheduled dispatch






7 195 0 Preparacin / Preparation Reduccin / Reduction

8 130 0 Carga / Load Calibracin PSS / PSS setting

9 130 -80 Carga / Load Pruebas PSS - SUB / PSS Test - Underexcitation

10 130 100 Carga / Load Pruebas PSS - SOB / PSS Test - Overexcitation

11 130 0 Carga / Load Pruebas PSS - MAX G / PSS Test - Max Gain

12 260 0 Carga / Load Pruebas PSS - RAMP PM/ PSS Test - Mechanical Power Ramp




16 260 0 Carga / Load Finalizacin/End










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3.2 Measurement of local mode damping

Temporal Response of the Control Loop tests are used to verify the PSS when the generator

is on load.

Preliminary conditions: The unit must be connected to the system, loaded, without oscillations

from the network and dispatched in the operating conditions listed below. The AVR must be in

voltage control mode.

Tests development: Step changes shall be applied in the AVR voltage reference for the

following conditions of operation:

Test Voltage

[%]

Active

Power

[%]

Reactive

Power Step [%]

Length

[sec] PSS

1* ~100 ML or IL 0 2 120 ON

2 ~100 ML or IL 0 2 120 OFF

3 ~100 ML or IL (+) -2 120 ON

4 ~100 ML or IL (+) -2 120 OFF

5 ~100 ML or IL (-) 2 120 ON

6 ~100 ML or IL (-) 2 120 OFF *Test 1 will be performed for several PSS Gain levels, from cero to the value define in the studies. Other PSS settings could

be change according to the actual response of the unit.

Notes:

FL: active power near to full load (maximum achievable at test's day)

IL: intermediate value between FL and ML

ML: minimum load (minimum stable working point) The generator terminal voltage shall be as close as possible to 100% of its nominal value. Reactive Power: (+) indicates overexcited operating conditions near the limit of

overexcitation. Reactive Power: (-) indicates underexcited operating conditions near the limit of

underexcitation. Step 2%: the value may be adjusted depending on system conditions.

Electrical signals to be recorded:

1. Applied pulse 2. Terminal voltage 3. Field (excitation) voltage 4. Field (excitation) current 5. Active Power 6. Reactive Power 7. Frequency 8. PSS output 9. Additional signals of the control system

The list of tests is a reference, the EE team leader will decide on site whether is necessary to add

or omit any.


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3.3 Effects of variation in the mechanical power

The objective of this test is to verify that the settings of the filters and the design of PSS

allows to minimize the effect on the output of PSS of rapid variations in mechanical power.

Preliminary conditions: the unit must be connected to the system, without oscillations from

the network. The AVR must be in voltage control mode.

Tests development: When the unit is operating at 75% of its nominal active power, the

active power of the unit shall be increased up to 100% of its capacity according in the following

conditions:

Test Voltage

[%]

Active

Power

[%]

Reactive

Power

Loading

[%] PSS

1 ~100 75 0 25 ON

2 ~100 75 0 25 OFF

The loading process must be performed at the highest ramp rate that can be selected by the

operator. The list of tests is a reference, the EE team leader will decide on site whether is necessary

to add or omit any test.


1. Terminal voltage 2. Field (excitation) voltage 3. Field (excitation) current 4. Active Power 5. Reactive Power 6. Frequency 7. PSS output 8. Additional signals of the control system


or omit any.


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3.4 Maximum Gain

The objective of this test is to determine the maximum gain of the PSS and verify that it

keeps a proper stability margin.

Preliminary conditions: The unit must be connected to the grid, without oscillations from


Tests development: The gain of the PSS shall be gradually increased until high frequency

poorly damped oscillations are observed on terminal voltage and/or field current. This value gain

must be recorded as limit

Test Voltage

[%]

Active

Power[%]

Reactive

Power PSS

2 ~100 FL or IL


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4 CT NORGENER

4.1 Curva de Carga (Load Profile)

Durante los das 3 y 4 se evaluarn las unidades NORGENER U1 y U2. Se prev la evaluacin

de una unidad por da conforme al siguiente diagrama de carga.

On days 3 and 4 NORGENER units U1 and U2 will be evaluated. Evaluation of one unit per

day according to the following load profile, is expected.

-40

-20

0

20

40

60

80

100

120

140

160

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

NORGENER - Diagrama de Carga (Load Profile)

P (MW) Q (MVAr)

Hora P (MW) Q (MVAr) Tipo de Prueba Detalles

Time [h] Active Reactive Test Details







7 67,5 0 Preparacin / Preparation Reduccin / Reduction

8 0 0 Vaco (FSNL*) Ajuste AVR / AVR Setting

9 0 0 Vaco (FSNL*) Ajuste AVR / AVR Setting

10 67,5 0 Carga / Load Calibracin PSS / PSS setting

11 67,5 -20 Carga / Load Pruebas PSS - SUB / PSS Test - Underexcitation

12 67,5 50 Carga / Load Pruebas PSS - SOB / PSS Test - Overexcitation

13 67,5 0 Carga / Load Pruebas PSS - MAX G / PSS Test - Max Gain




17 101,5 0 Carga / Load Pruebas PSS - RAMP PM/ PSS Test - Mechanical Power Ramp

18 135 0 Carga / Load Finalizacin/End







*FULL SPEED NO LOAD


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4.2 No-load test

Temporal Response of the Excitation Control Loop tests are made to verify the performance

of the voltage regulation when the generator working at full speed no load (FSNL).

Preliminary conditions: The unit shall be spinning at nominal speed. The terminal voltage of

the unit shall be at its nominal value and the unit shall be disconnected from the grid. The AVR

must be in voltage control mode.

Tests development: Step changes shall be applied to the AVR reference voltage in the following

operation conditions:

Test Voltage

[%]

Step

[%]

Length

[sec]

1* 100 5 20

2 90 5 20

*Test 1 will be performed for several AVR Gain levels, from the current value to at least half of it.

Then it would be set to the value define in the studies.


or omit any test.


1. The applied pulse.

2. The terminal voltage. 3. The field (excitation) voltage. 4. The field (excitation) current. 5. Additional signals of the control system


or omit any.


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4.3 Measurement of local mode damping

Temporal Response of the Control Loop tests are used to verify the PSS when the generator

is on load.

Preliminary conditions: The unit must be connected to the system, loaded, without oscillations

from the network and dispatched in the operating conditions listed below. The AVR must be in

voltage control mode.

Tests development: Step changes shall be applied in the AVR voltage reference for the

following conditions of operation:

Test Voltage

[%]

Active

Power

[%]

Reactive

Power Step [%]

Length

[sec] PSS

1* ~100 ML or IL 0 2 120 ON

2 ~100 ML or IL 0 2 120 OFF

3 ~100 ML or IL (+) -2 120 ON

4 ~100 ML or IL (+) -2 120 OFF

5 ~100 ML or IL (-) 2 120 ON

6 ~100 ML or IL (-) 2 120 OFF *Test 1 will be performed for several PSS Gain levels, from cero to the value define in the studies. Other PSS settings could

be change according to the actual response of the unit.

Notes:

FL: active power near to full load (maximum achievable at test's day)

IL: intermediate value between FL and ML

ML: minimum load (minimum stable working point) The generator terminal voltage shall be as close as possible to 100% of its nominal value. Reactive Power: (+) indicates overexcited operating conditions near the limit of

overexcitation. Reactive Power: (-) indicates underexcited operating conditions near the limit of

underexcitation. Step 2%: the value may be adjusted depending on system conditions.


1. Applied pulse 2. Terminal voltage 3. Field (excitation) voltage 4. Field (excitation) current 5. Active Power 6. Reactive Power 7. Frequency 8. PSS output 9. Additional signals of the control system


or omit any.


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4.4 Effects of variation in the mechanical power

The objective of this test is to verify that the settings of the filters and the design of PSS

allows to minimize the effect on the output of PSS of rapid variations in mechanical power.

Preliminary conditions: the unit must be connected to the system, without oscillations from


Tests development: When the unit is operating at 75% of its nominal active power, the

active power of the unit shall be increased up to 100% of its capacity according in the following

conditions:

Test Voltage

[%]

Active

Power

[%]

Reactive

Power

Loading

[%] PSS

1 ~100 75 0 25 ON

2 ~100 75 0 25 OFF

The loading process must be performed at the highest ramp rate that can be selected by the

operator. The list of tests is a reference, the EE team leader will decide on site whether is necessary

to add or omit any test.


1. Terminal voltage 2. Field (excitation) voltage 3. Field (excitation) current 4. Active Power 5. Reactive Power 6. Frequency 7. PSS output 8. Additional signals of the control system


or omit any.


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4.5 Maximum Gain

The objective of this test is to determine the maximum gain of the PSS and verify that it

keeps a proper stability margin.

Preliminary conditions: The unit must be connected to the grid, without oscillations from


Tests development: The gain of the PSS shall be gradually increased until high frequency

poorly damped oscillations are observed on terminal voltage and/or field current. This value gain

must be recorded as limit

Test Voltage

[%]

Active

Power[%]

Reactive

Power PSS

2 ~100 FL or IL


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5 Interconexin SADI-SING

El da 6 se prevn las pruebas de vinculacin SADI-SING. En funcin de los requerimientos

de CAMMESA y CDEC se realizarn pruebas contemplando distintos niveles de transferencia por la

vinculacin SADI-SING y ajustes de ganancias en los estabilizadores de las 4 (cuatro) unidades en

estudio.

Para contemplar un comportamiento seguro de la red se propone que las pruebas de variacin

de ganancia de los estabilizadores se realicen conforme se describe en la siguiente curva de

transferencia y nivel de ganancia de los estabilizadores.

On day 6th SADI-SING interconnection is expected. According to the transmission system

operators different power transfer levels and PSS gains are to be tested. The following power

transfer and PSS Gain settings curve is proposed.

0

20

40

60

80

100

120

140

160

INTERCONECTION TESTS

P [MW]SING->SADI

PSS Gain [% Setting]

Security limit,cero gain if possible


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Durante las pruebas de interconexin SADI-SING se debern registrar en cada unidad en

estudio, las seales:

1. Tensin en bornes generador

2. La tensin de campo del generador o campo de la excitatriz

3. La corriente de campo del generador o campo de la excitatriz

4. Potencia Activa

5. Potencia Reactiva

6. Frecuencia

7. Seal de salida del PSS

8. Otras variables definidas en campo

During the tests the following variables should be recorded in each unit:

1. Terminal voltage

2. Field (excitation) voltage

3. Field (excitation) current

4. Active Power

5. Reactive Power

6. Frequency

7. PSS output

8. Additional signals of the control system

P [MW]

SING->SADI

PSS Gain

[% Setting]Comentarios / comments

0 100 Enlace Abierto / Tie Open

0 100 Enlace Cerrado / Tie Closed

0 100 Enlace Cerrado / Tie Closed

50 100 Aumento transferencia / Increase transfer

50 100 Registros / Record


100 50 Reduccin Ganancia PSS / PSS Gain Reduction

100 0 Reduccin Ganancia PSS / PSS Gain Reduction

100 100 Reestablecimiento de ganancia / Restore Gain


150 100 Registros / Record

100 100 Reduccin transferencia / Decrease transfer

50 100 Reduccin transferencia / Decrease transfer

0 100 Fin / End

0 100 Enlace Abierto / Tie Open


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Esta pgina ha sido intencionalmente dejada en blanco

1 INTRODUCCIN2 TAREAS / Tasks2.1 CARTA GANTT

3 CT ANGAMOS3.1 Curva de Carga (Load Profile)3.2 Measurement of local mode damping3.3 Effects of variation in the mechanical power3.4 Maximum Gain

4 CT NORGENER4.1 Curva de Carga (Load Profile)4.2 No-load test4.3 Measurement of local mode damping4.4 Effects of variation in the mechanical power4.5 Maximum Gain

5 Interconexin SADI-SING

David Perrone2014-11-07T17:41:47-0300RosarioFirma informe

Alejandro Musto2014-11-07T17:41:48-0300RosarioFirma informe

Fernando Libonati2014-11-07T17:41:49-0300RosarioFirma informe

ee es 2014 0836 rc_protocolo de pruebas norgener angamos

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