21-30-26-rev 1 protection relay settings

ANTAMINA PROJECT

220 kV SUBSTATION AND TRANSMISSION LINES

PROTECTION RELAY SETTINGS

Revised Approved Date

Report 21-30-26-E - Rev 1

PROTECTION RELAY SETTINGS21-30-26-E – Rev 1

REVISION

REV DESCRIPTION DATE

A

0

1

First Issue

Approved

Updating project data items 3.03, 3.04 and 3.05

Oct. 18th, 1999

Oct. 30th, 1999

12th Nov, 1999

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220 kV SUBSTATION AND TRANSMISSION LINESPROTECTION RELAY SETTINGS

CONTENT

1.00 PURPOSE

2.00 STANDARDS & REFERENCES

3.00 PROJECT DATA 3.01 Scope of the Project3.02 Network Data3.03 Maximum Short-circuit currents3.04 Minimum Short-circuit currents3.05 Source Impedance3.06 Fault Resistance3.07 Instrument Transformers 3.08 Telecommunication Equipment

4.00 PROTECTION SYSTEM4.01 Primary Protection4.02 Secondary Protection4.03 Backup Protection4.04 Auto-reclosing

5.00 BREAKER PROTECTION5.01 Devices in the Circuit Breaker5.02 Breaker Protection Relays

ANNEX 1 CALCULATION SHEETS OF SETTINGS

ANNEX 2 R-X DIAGRAMS

ANNEX 3 TRIPPING SCHEMES ON THE 220 kV RING BUS

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220 kV SUBSTATION AND TRANSMISSION LINES

PROTECTION RELAY SETTINGS

1.00 PURPOSE

The purpose of this document is to provide the criteria for relay settings. On this basis the calculations are performed to provide each setting.

2.00 STANDARDS & REFERENCES

The report is prepared on the basis of the following documents

ANSI/IEEE C37-93 IEC 255 Numerical Line Protection Type REL 316*4. Operating Instructions.

ABB Power Automation Line Distance Protection Terminal REL 521*2.0. Technical Reference Manual.

ABB Network Partner Breaker Protection Terminal REL 521*2.0. User’s Manual.

ABB Network Partner

Project data is from the following documents

Initial Studies for the Interconnection of Cía Minera Antamina into Aguaytía Energy del Perú SR Ltda. / SICN 220 kV System at Vizcarra SubstationPower Technologies, Inc., Report No. 34-99.

Aguaytia – Tingo María – Paramonga 220 kV Transmission Line.Substation Project. Final Relay Settings

Drawing 21-31-30-E Vizcarra Substation.Single Line Diagram

Drawing 21-31-32-E Vizcarra Substation.Metering and Protection Diagram

Drawing 21-33-30-E Vizcarra Substation.Telecommunications and Telephone System

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3.00 PROJECT DATA

3.01 Scope of the Project

At the present time, there is one transmission line from Paramonga Nueva to Tingo María and the new Vizcarra Substation will be located along this line. There will be one Static Var Compensator (SVC) in Vizcarra; also, there will be one new Transmission Line from Vizcarra to Antamina Substation (L-255).

The relay settings are for the new Vizcarra Substation, where new Relays for the lines to Paramonga Nueva and Tingo María Substations will be installed. At the same time, the new settings will be determined for the existing Line Protection Relays in both Paramonga Nueva and Tingo María substations. Nothing else will be included in these substations. Also, the relay settings are for the new transmission line from Vizcarra to Antamina (L-255).

The SVC will have differential protection, but it is out of the scope of this report.

3.02 Network Data

The data of the Transmission Line is the following

LINE DISTANCE[km]

ImpedancePositive Sequence

[Ohm/phase]

ImpedanceZero Sequence

[Ohm]

R X Ro XoParamonga

VizcarraL-253

144.211 8.298 72.833 39.736 212.284

Tingo MaríaVizcarraL-252

173.7 9.995 87.727 47.862 255.695

VizcarraAntamina

L-25552.08 3.001 26.568 20.745 88.429

AguaytíaTingo María 73.29 4.217 37.015 20.194 107.890

ParamongaChimbote

L-215221.2 19.466 110.6 54.681 365.422

ParamongaZapallalL-213

157.5 14.175 124.11 38.903 256.73

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3.03 Maximum Short-circuit currents

The maximum short-circuit currents will be with maximum dispatch.

BUS SOURCE Three-phase fault[kA]

Line to ground fault[kA]

Tingo María AguaytíaSICN

VizcarraTOTAL

X/R

1.320.270.582.1710.1

0.940.200.391.548.1

Vizcarra TingoMaríaParamonga Nueva

AntaminaTOTAL

X/R

0.750.97

1.728.0

0.500.66

1.156.8

Antamina VizcarraX/R

1.238.2

0.786.2

Paramonga Nueva VizcarraZapallal

ChimboteParamonga

TOTALX/R

0.521.250.680.272.716.6

0.360.860.490.382.097.4

3.04 Minimum Short-circuit currents

The minimum short-circuit currents will be with minimum dispatch. The system configuration is shown on Figure No. 2

BUS SOURCE Three-phase fault[kA]

Line to ground fault[kA]

Tingo María AguaytíaSICN

VizcarraTOTAL

X/R

1.320.27

1.5811.5

0.950.21

1.168.9

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Vizcarra TingoMaríaParamonga Nueva

AntaminaTOTAL

X/R

0.000.61

0.616.9

0.000.48

0.487.0

Antamina VizcarraX/R

0.537.0

0.406.6

Paramonga Nueva VizcarraZapallal

ChimboteParamonga

TOTALX/R

0.660.270.936.5

0.520.360.887.9

3.05 Source Impedance

On the basis of the maximum short circuit current the source impedance at each bus will be as follows

BUS X/R R[Ohm]

X[Ohm]

Tingo María 10.1 5.774 58.61

Vizcarra 8.0 9.15 73.34

Antamina 8.2 12.49 102.4

Paramonga Nueva 6.6 7.04 46.29

3.06 Fault Resistance

The fault resistance will be the arc resistance plus the tower resistance. The first value will calculated according to the formula

Rarc = 28707 L / I1.4

Where L is the length of the arc which is typically three times the conductor to tower spacing and I is the minimum shortcircuit current (average value of both ends). On this basis the fault resistance will be as follows

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LINE Resistance Arc[Ohm]

Resistance Tower[Ohm]

Fault Resistance[Ohm]

Vizcarra – Paramonga

L-25324 25 49

Vizcarra – Tingo María

L-25239 25 64

Vizcarra – Antamina

L-25560 25 85

3.07 Instrument Transformers

The technical characteristics of Voltage and Current Transformers are the following

Instrument Transformer STATIONParamonga Vizcarra Tingo María

Voltage TransformersPrimary [V] 220000 / 3 138000 220000 / 3

Secondary [V] 110 / 3 69 100 / 3

Current TransformersPrimary [A] 500 600 500

Secondary [A] 5 5 1

3.08 Telecommunication Equipment

Power Line Carrier will provide support for the Protection System. There will be three telecommunication links: Vizcarra – Paramonga, Vizcarra – Tingo María and Vizcarra – Antamina. One channel will be installed on each link and there will be one Teleprotection Signal Equipment over each channel. This equipment will provide four signals named A, B C and D.

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4.00 PROTECTION SYSTEM

Protection will be carried by Multifunction Relays. Each protection zone will include one Transmission Line (or the SVC) and one part of the 220 kV Ring Bus. There will be two relays per protection zone; one is named Primary Protection and the other is named Secondary Protection. Additionally, there will be one Breaker Protection Relay. In the first stage when SVC is not in service, this relay will provide overcurrent protection on the corresponding part of the Ring Bus.

SVC will not be in service at the first stage, therefore provisional connections must be done in order to get the proper overlapping protection zones on the 220 kV Ring Bus. For this reason, one interconnection between current transformer boxes will be necessary to extent the Antamina Line zone; in the same way, Antamina line protection will trip the corresponding circuit breaker also. Both provisional interconnection cables will be installed at the switchyard.

Relay ABB - REL 521 will be used for Primary Protection and Relay ABB - REL 316 will be used for Secondary Protection. Relay ABB - REB 551 will be used for Breaker Protection.

In Vizcarra Substation, Primary Protection Relays will work with Trip 1 in the Circuit Breakers and Secondary Protection Relays will work with Trip 2. Each Breaker Protection will operate with one Lockout Relay to trip and block the corresponding breakers. These relays will work with Trip 1 and Trip 2.

4.01 Primary Protection

4.01.1 Vizcarra - Paramonga Nueva (L-253) and Vizcarra - Tingo María (L-252) Lines

Stepped impedance (21 & 21N) function in the Primary Protection Relays at both ends of the line will be used to achieve fast fault clearance on all the transmission line.

The communication scheme will be through the Teleprotection Equipment using signal A. The logic will be Permissive Underreach Transfer Trip (PUTT) with the following settings

First Zone : 85% of the line

Second Zone : 120% of the line

Directional Earth Fault function (67N) in the Primary Protection Relays will be used also. It will work with the Teleprotection Equipment using signal C. Permissive overreach logic will be used to assure that the fault is in the protected line. The settings will be 15% in the residual current.

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4.01.2 Vizcarra – Anatamina Line (L-255)

Stepped impedance (21 & 21N) function in the Primary Protection Relay will be used to achieve fast fault clearance on all the transmission line. The setting will be 120% of the line in order to cover the full length.

Directional Earth Fault functions (67N) in the Primary Protection Relays will be used also. The settings will be 15% in the residual current.

Primary Protection Relay will operate one Direct Transfer Trip trough the power line carrier to trip both ends of the line. It will work with the Teleprotection Equipment using signal A.

4.02 Secondary Protection

4.02.1 Paramonga Nueva – Vizcarra (L-253) and Vizcarra – Tingo María (L-252) Lines

Stepped impedance (21 & 21N) function in the Primary Protection Relays at both ends of the line will be used to achieve fast fault clearance on all the transmission line.

The first zone will operate to give direct trip the local breaker at each substation; but one communication scheme will be used with the second zone. This scheme will be trough the Teleprotection Equipment using signal B. The logic will be Permissive Overreach Transfer Trip (POTT) to assure the fault is in the protected line. The settings will be as follows

First Zone : 85% of the lineSecond Zone : 120% of the line

Directional Earth Fault function (67N) in the Secondary Protection Relays will be used also. It will work with the Teleprotection Equipment using signal C. Permissive overreach logic will be used to assure that the fault is in the protected line. The settings will be 15% in the residual current.

Secondary Protection will be carried out by Second Zone Impedance function (21 & 21N), which will operate with Permissive Overreach Transfer Trip (POTT) scheme. The impedance setting will be 120% of the line in order to get the reach for the full line.

4.02.2 Vizcarra – Anatamina Line (L-255)

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Stepped impedance (21 & 21N) function in the Primary Protection Relay will be used to achieve fast fault clearance on all the transmission line. The setting will be 120% of the line in order to cover the full length.

Directional Earth Fault functions (67N) in the Primary Protection Relays will be used also. The settings will be 15% in the residual current.

Primary Protection Relay will operate one Direct Transfer Trip trough the power line carrier to trip both ends of the line. It will work with the Teleprotection Equipment using signal B.

4.03 Backup Protection

4.03.1 Remote Protection

Backup Protection will be carried out by the second, third, fourth and fifth zones of Impedance function in both Primary and Secondary Protection Relays.

Second zone will reach part of the next line and will have time delay in the first time step. Fourth zone will be used to reach the next line and third zone will be used to reach line back. Third and fourth zones will have time delay in the second time step. Fifth zone will reach the protected line plus shortest next line. The settings and timing will be as follows

Zone Impedance Set Time Delay

Second 120% of the line 400 ms

Third -30% of the line 700 ms

Fourth 150% of the line 700 ms

Fifth 100% of the line plus150% or 200% of next line

(the shortest)

1500 ms

4.03.2 Breaker Failure Protection

Besides the Remote Backup Protection, there will be a Local Backup Protection carried out by Breaker Failure Relay.

Breaker Failure Protection will start with tha main protection and will sense current in the current. The setting will be 50% of the nominal current. In this way it will repeat in 150 ms the signal to trip the Circuit Breaker. 150 ms later, it will trip the adjacent breakers in Vizcarra Substation and will send one direct transfer trip to the opposite station connected with the faulted breaker.

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Transfer Trip will be through Teleprotection Equipment using signal D, which is bidirectional. In this way, each reception will trip the corresponding breakers in Vizcarra.

4.03.3 Overcurrent Protection

Overcurrent (51) function in Secondary Protection Relays will be used also as Backup Protection. Definite–time characteristics will be selected in a way that for the maximum overcurrent the time delay will be equal 2000 ms.

4.04 Auto-reclosing

4.04.1 Paramonga Nueva – Vizcarra (L-253)

Automatic single-pole reclosing will be used with line protection. There will not be three-pole reclosing. This function will be carried out by Breaker Protection Relay. If there is a fault phase to ground in this line, two breakers must trip: Breaker IN-2402 (52-01) and IN-2400 (52-02) and the Auto-reclosing will be as follows:

1) Breaker IN-2402 (52-01) will trip all the poles, but Breaker IN-2400 (52-02) will trip only the pole corresponding to the faulted phase

2) Time delay for Auto-reclosing will be 500 ms and after this Breaker IN-2400 (52-02) will close.

3) If the fault is cleared the Breaker IN-2400 (52-02) will remain closed. Breaker 52-01 must be closed later by the Breaker Protection Relay.

4) If the fault is not cleared, Breaker IN-2400 (52-02) will trip the three poles

4.04.2 Vizcarra – Tingo María Lines (L-252)

Automatic single-pole reclosing will be used with line protection. There will not be three-pole reclosing. This function will be carried out by Breaker Protection Relay. If there is a fault phase to ground in this line, two breakers must trip: Breaker IN-2400 (52-02) and IN-2406 (52-03) and the Auto-reclosing will be as follows:

1) Breaker IN-2406 (52-03) will trip all the poles, but Breaker IN-2400 (52-02) will trip only the pole corresponding to the faulted phase

2) Time delay for Auto-reclosing will be 500 ms and after this Breaker IN-2400 (52-02) will close.

3) If the fault is cleared the Breaker IN-2400 (52-02) will remain closed. Breaker IN-2406 (52-03) must be closed later by the Breaker Protection Relay.

4) If the fault is not cleared, Breaker IN-2400 (52-02) will trip the three poles

4.04.3 Vizcarra –Antamina Line (L-255)

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There will not be auto-reclosing in this line. However, provisions for future application will be included. Programming on the Relay will be switched OFF and connection jumpers for the reclosing circuit will be removed.

5.00 BREAKER PROTECTION

Breaker Protection will be done by the devices incorporated in the equipment and Breaker Protection Relay.

5.01 Devices in the Circuit Breakers

The devices in the Circuit Breaker will perform the protection as follows:

1) Low Pressure SF6 with two levels: Refill Gas Trip and Block the Breaker

2) Spring Failure to block the Breaker

3) Pole Disagreement to trip the Breaker. It will trip the breaker after 1000 ms.

5.02 Breaker Protection Relays

5.02.1 Breaker IN-2402 (52-01)

The Relay will operate in two steps:

1) If the main protection sends the trip signal and 150 ms later the fault is not cleared, Breaker Relay will repeat the trip signal

2) If 150 ms later (total 300 ms) the fault is not cleared, Breaker Relay will trip Breaker IN-2404 (52-04) and Breaker IN-2400 (52-02). At the same time, one direct transfer will be sent to Paramonga.

5.02.2 Breaker IN-2400 (52-02)



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2) If 150 ms later (total 300 ms) the fault is not cleared, Breaker Relay will trip Breaker IN-2402 (52-01) and Breaker IN-2406 (52-03). At the same time, one direct transfer will be sent to Paramonga and Tingo María.

5.02.3 Breaker IN-2406 (52-03)



2) If 150 ms later (total 300 ms) the fault is not cleared, Breaker Relay will trip Breaker IN-2404 (52-04) and Breaker IN-2400 (52-02). At the same time, one direct transfer will be sent to Tingo María.

5.02.4 Breaker IN-2404 (52-04)


1) If the main protection send the trip signal and 150 ms later the fault is not cleared, Breaker Relay will repeat the trip signal

2) If 150 ms later (total 300 ms) the fault is not cleared, Breaker Relay will trip Breaker IN-2402 (52-01) and Breaker IN-2406 (52-03).

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ANNEX 1 CALCULATION SHEETS OF SETTINGS

Relay Protection Settings for Vizcarra-Paramonga Line (L-253)Sheet 1 /2 & 2 /2

Relay Protection Settings for Vizcarra-Tingo María Line (L-252)Sheet 1 /2 & 2 /2

Relay Protection Settings for Vizcarra-Antamina Line (L-255)Sheet 1 /2 & 2 /2

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ANNEX 2 R-X DIAGRAMS

Figure 1.0 Vizcarra - Paramonga Line (L-253). Primary Protection

Figure 2.0 Vizcarra - Paramonga Line (L-253). Secondary Protection

Figure 3.0 Paramonga - Vizcarra Line (L-253). Primary Protection

Figure 4.0 Paramonga - Vizcarra Line (L-253). Secondary Protection

Figure 5.0 Vizcarra - Tingo María Line (L-252) . Primary Protection

Figure 6.0 Vizcarra - Tingo María Line (L-252). Secondary Protection

Figure 7.0 Tingo María - Vizcarra Line (L-252). Primary Protection

Figure 8.0 Tingo María - Vizcarra Line (L-252). Secondary Protection

Figure 9.0 Vizcarra – Antamina Line (L-255). Primary Protection

Figure 10.0 Vizcarra – Antamina Line (L-255). Secondary Protection

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ANNEX 3 TRIPPING SCHEMES ON THE 220 kV RING BUS

Figure 1 Antamina Line & Breaker IN-2404 (52-04)

Figure 2 SVC & Breaker IN-2406 (52-03)

Figure 3 Paramonga Line & Breaker IN-2402 (52-01)

Figure 4 Tingo María Line & Breaker IN-2400 (52-02)

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21-30-26-rev 1 protection relay settings

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