ABB RET620 Manuale utente

Relion® 620 series

Transformer Protection and Control

RET620

Product Guide

Contents

1. Description.....................................................................3

2. Default configurations.....................................................3

3. Protections functions......................................................9

4. Application...................................................................10

5. Supported ABB solutions.............................................11

6. Control.........................................................................12

7. Measurement...............................................................13

8. Disturbance recorder....................................................13

9. Event log......................................................................13

10. Recorded data............................................................13

11. Trip-circuit supervision.................................................13

12. Self-supervision...........................................................13

13. Access control............................................................13

14. Inputs and outputs......................................................14

15. Station communication................................................14

16. Technical data.............................................................18

17. Local HMI....................................................................48

18. Mounting methods......................................................48

19. IED case and IED plug-in unit......................................49

20. Selection and ordering data.........................................50

21. Accessories and ordering data....................................52

22. Tools...........................................................................52

23. Connection diagrams..................................................54

24. References..................................................................56

25. Functions, codes and symbols....................................57

26. Document revision history...........................................61

Disclaimer

The information in this document is subject to change without notice and should not be construed as a commitment by ABB. ABB assumes no responsibility for any

errors that may appear in this document.

Trademarks

ABB and Relion are registered trademarks of the ABB Group. All other brand or product names mentioned in this document may be trademarks or registered

trademarks of their respective holders.

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

2 ABB

1. Description

RET620 is a dedicated transformer IED perfectly aligned for

the protection, control, measurement and supervision of both

power and step-up transformers, including power generator-

transformer blocks, in utility and industrial power distribution

systems. RET620 is a member of ABB’s Relion® protection

and control product family and its 620 series. The 620 series

IEDs are characterized by their functional scalability and

withdrawable-unit design.

The 620 series has been designed to unleash the full potential

of the IEC 61850 standard for communication and

interoperability of substation automation devices.

2. Default configurations

The 620 series IEDs are configured with default

configurations, which can be used as examples of the 620

series engineering with different function blocks. The default

configurations are not aimed to be used as real end-user

applications. The end-users always need to create their own

application configuration with the configuration tool. However,

the default configuration can be used as a starting point by

modifying it according to the requirements.

RET620 is available with one default configuration. The

default signal configuration can be altered by means of the

graphical signal matrix or the graphical application

functionality of the Protection and Control IED Manager

PCM600. Furthermore, the application configuration

functionality of PCM600 supports the creation of multi-layer

logic functions utilizing various logical elements including

timers and flip-flops. By combining protection functions with

logic function blocks the IED configuration can be adapted to

user specific application requirements.

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0 Issued: 2013-05-07

Revision: A

ABB 3

3×

REMARKS

Optional

function

No. of

instances

Alternative

function to be

deﬁned when

ordering

Io/Uo

Calculated

value

3×

10100011001100

101100101110010

1100111011010

10110110110100

1010001100110010100011001100

101100101110010

1100111011010

10110110110100

Analog interface types 1)

Current transformer

Voltage transformer

1) Conventional transformer inputs

MEASUREMENT

COMMUNICATION

Protocols:

IEC 61850-8-1

Modbus®

IEC 60870-5-103

DNP3

Interfaces:

Ethernet: TX (RJ-45), FX (LC)

Serial: Serial glass ﬁber (ST),

RS-485, RS-232/485

D-sub 9, IRIG-B

Redundant protocols:

HSR

PRP

RSTP

ALSO AVAILABLE

- 16× prog. push-buttons on LHMI

- Disturbance and fault recorders

- Event log and recorded data

- High-Speed Output module (optional)

- IED self-supervision

- Local/Remote push-button on LHMI

- Sequence event recorder

- User management

- Web HMI

AND

CONTROL AND INDICATION 1)

LOCAL HMI

Object Ctrl 2) Ind 3)

1) Check availability of binary inputs/outputs

from technical documentation

2) Control and indication function for

primary object

3) Status indication function for

primary object

4 4

2 2

CONDITION MONITORING

AND SUPERVISION

TRANSFORMER PROTECTION AND CONTROL IED

PROTECTION

EXAMPLE

CONFIGURATION

Version 2.0

RET620

SYNC

Master trip

Lockout relay

94/86

Master trip

Lockout relay

94/86

3×

Uo>

59G

COLTC

90V

I2>

3I>>>

50P/51P

3I>/Io>BF

51BF/51NBF

3I<

37F

Io>>

51N-2

Io>

51N-1

dIoLo>

87NL

3I>

51P-1

3I>>

51P-2

3I>>>

50P/51P

3I>/Io>BF

51BF/51NBF

Io>>

51N-2

I2>

3Ith>T

49T

3I<

37F

Io>

51N-1

3I (HV)

3I (LV)

UL1UL2UL3

FUSEF

MCS 3I

MCS 3I, I2

TPOSM

84M

6×

UFLS/R

81LSH

U12

U12b

U12

8xRTD

3xmA

3I>

51P-1

3×

ARC

50L/50NL

dIoLo>

87NL

3I>>

51P-2

3I2f>

3I>>→

67-2

3I>→

67-1

Io>>→

67N-2

2×

Io>→

67N-1

dIoHi>

87NH

dIoHi>

87NH

3dI>T

87T

2×

U1<

47U+

2×

U2>

47O-

3×

f>/f<,

df/dt

Io (HV)

Io (LV)

- HV: I, U, Io, Uo

- LV: I, Io

- P, Q, E, pf, f

- Symmetrical components

- Limit value supervision

- Load proﬁle

ClearESC

U12 0. 0 kV

P 0.00 kW

Q 0.00 kVAr

IL2 0 A

2×

TCS

TCM

2×

CBCM

12×

MAP12

3×

3U<

2×

U/f>

3×

3U>

GUID-BFA69E71-CDBB-4333-A91F-001F2A8A1E6B V1 EN

Figure 1. Functionality overview

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

4 ABB

Table 1. Supported functions

Functionality CTs & VTs

Protection

Three-phase non-directional overcurrent protection, low stage, instance 1 ●1)

Three-phase non-directional overcurrent protection, low stage, instance 2 ●2)

Three-phase non-directional overcurrent protection, high stage, instance 1 ●1)

Three-phase non-directional overcurrent protection, high stage, instance 2 ●2)

Three-phase non-directional overcurrent protection, instantaneous stage, instance 1 ●1)

Three-phase non-directional overcurrent protection, instantaneous stage, instance 2 ●2)

Three-phase directional overcurrent protection, low stage, instance 1 ●1)

Three-phase directional overcurrent protection, high stage, instance 1 ●1)

Non-directional earth-fault protection, low stage, instance 1 ●3)

Non-directional earth-fault protection, low stage, instance 2 ●4)

Non-directional earth-fault protection, high stage, instance 1 ●3)

Non-directional earth-fault protection, high stage, instance 2 ●4)

Directional earth-fault protection, low stage, instance 1 ●3)

Directional earth-fault protection, low stage, instance 2 ●3)

Directional earth-fault protection, high stage, instance 1 ●3)

Negative-sequence overcurrent protection, instance 1 ●1)

Negative-sequence overcurrent protection, instance 2 ●2)

Residual overvoltage protection, instance 1 ●1)

Residual overvoltage protection, instance 2 ●1)

Residual overvoltage protection, instance 3 ●1)

Three-phase undervoltage protection, instance 1 ●1)

Three-phase undervoltage protection, instance 2 ●1)

Three-phase undervoltage protection, instance 3 ●1)

Three-phase overvoltage protection, instance 1 ●1)

Three-phase overvoltage protection, instance 2 ●1)

Three-phase overvoltage protection, instance 3 ●1)

Positive-sequence undervoltage protection, instance 1 ●1)

Positive-sequence undervoltage protection, instance 2 ●1)

Negative-sequence overvoltage protection, instance 1 ●1)

Negative-sequence overvoltage protection, instance 2 ●1)

Frequency protection, instance 1 ●1)

Frequency protection, instance 2 ●1)

Frequency protection, instance 3 ●1)

Voltage per hertz protection, instance 1 ●1)

Voltage per hertz protection, instance 2 ●1)

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

ABB 5

Table 1. Supported functions, continued

Functionality CTs & VTs

Three-phase thermal overload protection for power transformers, two time constants ●1)

Loss of phase (undercurrent), instance 1 ●1)

Loss of phase (undercurrent), instance 2 ●2)

Stabilized and instantaneous differential protection for 2-winding transformers ●

Numerical stabilized low impedance restricted earth-fault protection, instance 1 ●1)

Numerical stabilized low impedance restricted earth-fault protection, instance 2 ●2)

High impedance based restricted earth-fault protection, instance 1 ●1)

High impedance based restricted earth-fault protection, instance 2 ●2)

Circuit breaker failure protection, instance 1 ●1)

Circuit breaker failure protection, instance 2 ●2)

Three-phase inrush detector ●1)

Master trip, instance 1 ●

Master trip, instance 2 ●

Arc protection, instance 1 ○5)

Arc protection, instance 2 ○5)

Arc protection, instance 3 ○5)

Multipurpose analog protection, instance 1 ●

Multipurpose analog protection, instance 2 ●

Multipurpose analog protection, instance 3 ●

Multipurpose analog protection, instance 4 ●

Multipurpose analog protection, instance 5 ●

Multipurpose analog protection, instance 6 ●

Multipurpose analog protection, instance 7 ●

Multipurpose analog protection, instance 8 ●

Multipurpose analog protection, instance 9 ●

Multipurpose analog protection, instance 10 ●

Multipurpose analog protection, instance 11 ●

Multipurpose analog protection, instance 12 ●

Control

Circuit-breaker control, instance 1 ●1)

Circuit-breaker control, instance 2 ●2)

Disconnector control, instance 1 ●1)

Disconnector control, instance 2 ●1)

Earthing switch control, instance 1 ●1)

Disconnector control, instance 3 ●2)

Disconnector control, instance 4 ●2)

Earthing switch control, instance 2 ●2)

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

6 ABB

Table 1. Supported functions, continued

Functionality CTs & VTs

Disconnector position indication, instance 1 ●1)

Disconnector position indication, instance 2 ●1)

Earthing switch position indication, instance 1 ●1)

Disconnector position indication, instance 3 ●2)

Disconnector position indication, instance 4 ●2)

Earthing switch position indication, instance 2 ●2)

Synchronism and energizing check ●1)

Tap changer position indication ●

Tap changer control with voltage regulator ○2)

Load shedding and restoration, instance 1 ●1)

Load shedding and restoration, instance 2 ●1)

Load shedding and restoration, instance 3 ●1)

Load shedding and restoration, instance 4 ●1)

Load shedding and restoration, instance 5 ●1)

Load shedding and restoration, instance 6 ●1)

Condition monitoring

Circuit-breaker condition monitoring, instance 1 ●1)

Circuit-breaker condition monitoring, instance 2 ●2)

Trip circuit supervision, instance 1 ●1)

Trip circuit supervision, instance 2 ●2)

Current circuit supervision, instance 1 ●1)

Current circuit supervision, instance 2 ●2)

Advanced current circuit supervision for transformers ●

Fuse failure supervision ●1)

Measurement

Three-phase current measurement, instance 1 ●1)

Three-phase current measurement, instance 2 ●2)

Sequence current measurement, instance 1 ●1)

Sequence current measurement, instance 2 ●2)

Residual current measurement, instance 1 ●1)

Residual current measurement, instance 2 ●2)

Three-phase voltage measurement ●1)

Residual voltage measurement ●1)

Sequence voltage measurement ●1)

Three-phase power and energy measurement ●1)

Frequency measurement ●1)

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

ABB 7

Table 1. Supported functions, continued

Functionality CTs & VTs

Other

Minimum pulse timer (2 pcs), instance 1 ●

Minimum pulse timer (2 pcs), instance 2 ●

Minimum pulse timer (2 pcs), instance 3 ●

Minimum pulse timer (2 pcs), instance 4 ●

Minimum pulse timer (2 pcs, second resolution), instance 1 ●

Minimum pulse timer (2 pcs, second resolution), instance 2 ●

Minimum pulse timer (2 pcs, minute resolution), instance 1 ●

Minimum pulse timer (2 pcs, minute resolution), instance 2 ●

Pulse timer (8 pcs), instance 1 ●

Pulse timer (8 pcs), instance 2 ●

Time delay off (8 pcs), instance 1 ●

Time delay off (8 pcs), instance 2 ●

Time delay off (8 pcs), instance 3 ●

Time delay off (8 pcs), instance 4 ●

Time delay on (8 pcs), instance 1 ●

Time delay on (8 pcs), instance 2 ●

Time delay on (8 pcs), instance 3 ●

Time delay on (8 pcs), instance 4 ●

Set reset (8 pcs), instance 1 ●

Set reset (8 pcs), instance 2 ●

Set reset (8 pcs), instance 3 ●

Set reset (8 pcs), instance 4 ●

Move (8 pcs), instance 1 ●

Move (8 pcs), instance 2 ●

Move (8 pcs), instance 3 ●

Move (8 pcs), instance 4 ●

Generic control points, instance 1 ●

Generic control points, instance 2 ●

Generic control points, instance 3 ●

Remote generic control points ●

Local generic control points ●

Generic up-down counters, instance 1 ●

Generic up-down counters, instance 2 ●

Generic up-down counters, instance 3 ●

Generic up-down counters, instance 4 ●

Generic up-down counters, instance 5 ●

Generic up-down counters, instance 6 ●

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

8 ABB

Table 1. Supported functions, continued

Functionality CTs & VTs

Generic up-down counters, instance 7 ●

Generic up-down counters, instance 8 ●

Generic up-down counters, instance 9 ●

Generic up-down counters, instance 10 ●

Generic up-down counters, instance 11 ●

Generic up-down counters, instance 12 ●

Programmable buttons (16 buttons) ●

Logging functions

Disturbance recorder ●

Fault recorder ●

Sequence event recorder ●

Load profile ●

● = Included,○ = Optional at the time of the order

1) The function is to be used on high voltage winding side in the application

2) The function is to be used on low voltage winding side in the application

3) The function is to be used on high voltage winding side in the application,and uses calculated Io when HREF and varistor connection used

4) The function is to be used on low voltage winding side in the applicationand,and uses calculated Io when HREF and varistor connection used

5) Calculated Io is used for the residual current criteria

3. Protections functions

The IED features a three-phase, multi-slope stabilized (biased)

stage transformer differential protection and an instantaneous

stage to provide fast and selective protection for phase-to-

phase short circuit, winding interturn fault and bushing flash-

over protection. Besides the second harmonic restraint, an

advanced waveform-based blocking algorithm ensures

stability at transformer energization and the fifth harmonic

restraint function ensures good protection stability at

moderate overexcitation of power transformers. The restricted

earth-fault protection (REF) completes the overall differential

protection providing detection of even single phase-to-earth

faults close to the neutral earthing point of the transformer.

Either the conventional high-impedance scheme or the

numerical low-impedance scheme can be selected for

protection of the transformer windings. When the low-

impedance REF protection is used, neither stabilizing

resistors nor varistors are needed and, as a further benefit,

the transforming ratio of the neutral earthing CTs can differ

from that of the phase current transformers. Due to its unit

protection character and absolute selectivity, REF does not

need to be time-graded with other protection schemes, and

therefore a high-speed fault clearance can be achieved.

The IED also incorporates a thermal overload protection

function that supervises the thermal stress of the transformer

windings to prevent the premature aging of the insulation of

the windings. Multiple stages of short circuit, phase-

overcurrent, negative-phase-sequence and earth-fault backup

protection are separately available for both sides of the power

transformer. An earth-fault protection based on the measured

or calculated residual voltage is also available. The IED also

features three-phase overvoltage protection, three-phase

undervoltage protection and residual overvoltage protection.

Furthermore, the IED also offers circuit breaker failure

protection.

Enhanced with optional hardware and software, the IED also

features three light detection point-to-point lens sensors for

arc fault protection of the circuit breaker, busbar and cable

compartment of metal-enclosed indoor switchgear.

The arc fault protection sensor interface is available on the

optional communication module. Fast tripping increases staff

safety and security and limits material damage in an arc fault

situation. Optional high speed outputs help to minimize the

arc impacts.

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

ABB 9

4. Application

RET620 has been designed to be the main protection for two-

winding power transformers and power generator-transformer

blocks. RET620 also includes an optional voltage regulation

function.

RET620 can be used with either single- or double-busbar

configurations with either one or two breakers, and with

numerous switching device configurations. It supports a

substantial number of both manually and motor-operated

disconnectors and earthing switches, and it is capable of

running large configurations. The number of controllable

devices depends on the number of inputs and outputs left

free from other application needs. The number of available I/

Os can be increased with the RIO600 Remote I/O device.

RET620 offers extensive possibilities to tailor the

configurations to end application requirements. The tool suite

for all Relion IEDs is Protection and control IED manager

PCM600, which contains all the necessary tools for

configuring the device, including functionality,

parameterization, the HMI and communication.

RET620 provides both transformer protection and control and

voltage regulator control at the same time. Voltage regulation

capability is targeted for automatic and manual voltage

regulation of power transformers equipped with a motor-

driven on-load tap changer. An automatic voltage regulation

can be applied both with a single transformer as well as with

up to four transformers running in parallel. The IED also

supports both traditional resistor connection-based and

numerically calculated high-impedance earth-fault protection.

To further improve the arc fault protection and minimize the

effects of an arc fault, the 620 series IEDs ordered with the

arc fault protection option can be equipped with an I/O card

featuring high-speed outputs.

Io HV

Io LV

3I HV

3I LV

U12

U12b

RTD

RET620

Example conf.

ANSI IEC

50L/50NL

50P/51P

51P/51N

67/67N

84M

87T

90V

MAP

49T

87NH

87NL

87NH

87NL

SYNC

ARC

3I>>>

3I/Io

3I→/Io→

TPOSM

3dI>T

COLTC

MAP

3Ith>T

dIoHi>

dIoLo>

dIoHi>

dIoLo>

side

GUID-A758C254-7907-4965-9389-113BCBD77B75 V1 EN

Figure 2. The protection of HV/MV, or an MV/MV transformer with low-impedance EF on both sides of trafo

Transformer Protection and Control 1MRS757846 A

RET620

Product version: 2.0

10 ABB

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