reu615 broch 757062 lrenc

Voltage protection and control REU615

Relion® 615 series

2 Voltage protection and control | REU615

Compact and versatile solution for utility and industrial power distribution systems

REU615 is available in two predefined, off-the-shelf configurations, denoted A and B, targeted for two of the most common applications of the IED. The A configuration of REU615 is pre-adapted for voltage and frequency based protection applications in utility and industrial power systems and distribution systems including networks with distributed power generation. The B configuration of REU615 is pre-adapted for automatic voltage regulator functions for power transformers equipped with an on-load tap-changer. The A and B configuration also allow CB control and provides measuring and supervising functions. REU615 is a member of ABB’s Relion® protection and control product family and its 615 product series. The 615 series IEDs are characterized by their compactness and withdrawable-unit design. Re-engineered from the ground up, the new 615 series has been designed to unleash the full potential of the IEC 61850 standard for communication and interoperability between substation automation devices.

ApplicationThe A configuration of REU615 is indented to be used in

medium voltage switchgear systems with a separate voltage

measuring cubicle. The A configuration of REU615 provides

busbar overvoltage and undervoltage supervision, network

residual voltage and frequency supervision. REU615 also

offers the functionality needed to provide load shedding and

generation rejection in order to enhance network stability in

situations of excessive load. In generator and motor

applications REU615 provides additional protection by

supervising frequency and voltage. An integrated synchro-

check function ensures a safe connection of a rotating

machine to the network. In distribution networks with

distributed power generation REU615 can be used for loss-

of-mains (LOM) protection for single power generation units.

The B configuration of REU615 featuring voltage regulation

capability is targeted for automatic and manual voltage

regulation of power transformers equipped with a motor

driven on-load tap-changer. In small substations with a single

power transformer REU615 can be used for load-side voltage

regulation. For substations with up to four power transformers

operating in parallel three alternative voltage regulation

methods are selectable, i.e. the master/follower principle, the

negative reactance principle (NRP) or the minimizing

circulating current (MCC) principle.

REU615 | Voltage protection and control 3

3I

FUSEF 60

MAP MAP MCS 3I MCS 3I

COLTC 90V

TPOSM 84M 3U< 27 3U> 59

3 I> 51P-1 3 I>> 51P-2 3 I>>> 50P/51P

1) Optional

1)

3θ>T 49T

UL1

UL2

UL3

3

3

3

6 x RTD2 x mA

I∑

Protection function overview of the B configuration.

Uo UL1 UL2 UL3

1

f >/ f<df/dt 81

UFLS/R 81LSH Uo> 59G

3U> 59

3U< 27 U1< 47U+ U2> 47O-

SYNC 25

ARC 50L ARC 50NL Lockoutrelay 86

Load sheddingand restoration

Group 1Group 2Group 3Group 4Group 5

1) Optional and light detection only

1) 1)

Protection function overview of the A configuration.


Protection and controlThe A configuration of REU615 features residual overvoltage

protection, three-phase overvoltage protection, three-phase

undervoltage protection, positive sequence undervoltage

protection, negative sequence overvoltage protection and

frequency protection with 6 stages. Further, REU615

incorporates load shedding functionality with 5 stages.

REU615 also features network restoration functionality, which

ensures that the disconnected loads are reconnected as soon

as possible after network recovery to reduce outage times for

customers. Using GOOSE messaging or hardwired signaling,

also load shedding (disconnection) and restoration

(reconnection) functions can be used to control the circuit

breakers of up to five sheddable loads.

The B configuration of REU615 featuring voltage regulation

capability also offers a set of integrated protection functions

including three-phase non-directional overcurrent, three-

phase undervoltage, three-phase overvoltage and three-phase

thermal overload protection for power transformers.

Furthermore, REU615 can accommodate an optional

multipurpose RTD/mA measurement card. The card can, for

instance, be used to extend the functionality of the thermal

protection in power transformer applications. It can also act

as an interfacing unit for the tap-changer position indication

function using direct resistance or mA measurement.

Enhanced with optional hardware and software, REU615 also

features three light detection channels for arc detection in the

metering cubicle or busbar compartment of metal-enclosed,

air-insulated switchgear. Fast tripping increases staff safety

and security and limits material damage in an arc fault

situation.

REU615 integrates functionality for the control of a circuit

breaker via the front panel HMI or by means of remote

controls. The IED also features two control blocks which are

intended for motor-operated control of disconnectors or

circuit breaker trucks and for their position indications.

Further, REU615 offers a control block which is intended for

motor-operated control of one earthing switch control and

it’s position indication. The number of controllable primary

devices depends on the number of available inputs and

outputs in the selected configuration.

REU615 also offers a synchro-check function. The synchro-

check function allows a circuit breaker to be closed only if the

voltages on both sides of the circuit breaker fulfill the defined

conditions regarding magnitude, phase and frequency

difference.

To protect the IED from unauthorized access and to maintain

the integrity of information, the IED has been provided with a

four-level, role-based user authentication system. The access

control system applies to the front panel HMI, the web

browser based HMI and the PCM600 Protection and Control

IED Manager.


The signal configuration of the IED can be adjusted using

the signal matrix functionality (SMT) or the graphical

application configuration functionality (ACT) of PCM600,

ABB’s Protection and Control IED Manager. ACT supports

creation of multi-layer logic functions made up of logic

elements also including timers and flip-flops. By combining

protection functions with logic functions the standard IED

configuration can be fine tuned to fit the special requirements

of the application.

Standardized communicationREU615 features genuine support for the IEC 61850 standard

for inter-device communication in substations. It also supports

the DNP3 and the IEC 60870-5-103 protocol, as also the

industry standard Modbus® protocol.

For a self-healing Ethernet solution the IED offers an optional

fibre-optic communication module providing two optical and

one galvanic Ethernet network interfaces. Alternatively, the

IED features an optional galvanic communication module with

two galvanic and one optical Ethernet network interfaces or

three galvanic interfaces. The third Ethernet interface provides

connectivity of any other Ethernet devices to an IEC 61850

station bus inside of a switchgear bay. The self-healing

Ethernet solution constitutes a cost efficient communication

loop controlled by a managed switch. The managed switch

controls the consistency of the loop, routes the data and

corrects the flow of data in communication disturbance

situations. The self-healing Ethernet ring can be built on the

Ethernet based IEC 61850, Modbus® and DNP3 protocols.

The implementation of the IEC 61850 substation

communication standard in REU615 covers both vertical

and horizontal communication, including GOOSE messaging

with both binary and analog signals and parameter setting

according to IEC 61850-8-1. The substation configuration

language enables the use of engineering tools for efficient

configuration and commissioning of substation devices.

For accurate time stamping REU615 supports synchronization

over Ethernet using SNTP or over a separate bus using

IRIG-B.

Single line diagramThe 615 series IEDs with large graphical display offer

customizable visual single line mimic diagrams (SLD) with

position indication for the relevant circuit breaker,

disconnectors and the earthing switch. Apart from the default

single line diagram, the IED may display related measured

values, as provided by the chosen standard configuration.

The SLD view can also be accessed through the web-browser

based user interface. The default SLD can be modified

according to user requirements using the graphical display

editor of PCM600.


Supported functions, codes and symbols

Functionality

Protection

Three-phase non-directional overcurrent protection, low stage

Three-phase non-directional overcurrent protection, high stage

Three-phase non-directional overcurrent protection, instantaneous stage

Residual overvoltage protection

Three-phase overvoltage protection

Three-phase undervoltage protection

Positive-sequence undervoltage protection

Negative-sequence overvoltage protection

Frequency protection

Three-phase thermal overload protection for power transformers,

two time constants

Master trip

Arc protection

Multi-purpose protection 3)

Load shedding and restoration

Control

Circuit-breaker control

Disconnector control

Earthing switch control

Disconnector position indication

Earthing switch indication

Tap changer position indication

Tap changer control with voltage regulator

Synchronism and energizing check

Condition Monitoring

Trip circuit supervision

Current circuit supervision

Fuse failure supervision

B

1

1

1

-

3

3

-

-

-

1

2

-

(6)

-

1

2

1

3

2

1

1

-

2

1

1

A

-

-

-

3 1)

3

3

2

2

6

-

2

(3) 2)

-

5

1

2

1

3

2

-

-

1

2

-

-

IEC-ANSI

51P-1

51P-2

50P/51P

59G

59

27

47U+

47O-

81

49T

94/86

50L/50NL

MAP

81LSH

I O CB

I O DCC

I O ESC

I O DC

I O ES

84M

90V

25

TCM

MCS 3I

60

IEC 60617

3I>

3I>>

3I>>>

Uo>

3U>

3U<

U1<

U2>

f>/f<, df/dt

3Ith>T

Master Trip

ARC

MAP

UFLS/R

I O CB

I O DCC

I O ESC

I O DC

I O ES

TPOSM

COLTC

SYNC

TCS

MCS 3I

FUSEF

IEC 61850

PHLPTOC

PHHPTOC

PHIPTOC

ROVPTOV

PHPTOV

PHPTUV

PSPTUV

NSPTOV

FRPFRQ

T2PTTR

TRPPTRC

ARCSARC

MAPGAPC

LSHDPFRQ

CBXCBR

DCXSWI

ESXSWI

DCSXSWI

ESSXSWI

TPOSSLTC

OLATCC

SECRSYN

TCSSCBR

CCRDIF

SEQRFUF

Standard configurations

Description

Voltage and frequency based protection and measurement functions, synchro-check, load shedding and CB control

Automatic voltage regulator

Standard

configuration

A

B

Standard configurations

1, 2,... = number of included instances / I/Os

( ) = optional


Supported functions, codes and symbols

Functionality

Measurement

Disturbance recorder

Three-phase current measurement

Sequence current measurement

Three-phase voltage measurement

Residual voltage measurement

Sequence voltage measurement

Three-phase power and energy measurement, including power factor

RTD/mA measurement

Frequency measurement

Inputs/Outputs

Analog inputs

CT

VT

RTD inputs 4)

mA inputs 4)

Binary inputs/outputs

Binary inputs 4)

Binary outputs 4)

B

1

1

1

1

-

1

1

(1)

-

4

3

(6)

(2)

8 (14) 5)

10 (13) 5)

A

1

-

-

1

1

1

-

1

-

5

-

-

12

10

IEC 61850

RDRE

CMMXU

CSMSQI

VMMXU

RESVMMXU

VSMSQI

PEMMXU

XRGGIO130

FMMXU

IEC-ANSI

-

3I

I1, I2, I0

3U

Vn

U1, U2, U0

P, E

X130 (RTD)

f

IEC 60617

-

3I

I1, I2, I0

3U

Uo

U1, U2, U0

P, E

X130 (RTD)

f

1) Uo selectable by parameter, Uo measured as default2) Light only3) Multi-purpose protection is used for, for example, RTD/mA based protection4) The optional I/O module and the optional RTD/mA modules are mutually exclusive5) With the ( ) optional I/O module

The instances of a protection function represent the number of identical function blocks available in a standard configuration.

By setting the application specific parameters of an instance, a protection function stage can be established.

1, 2,... = number of included instances / I/Os

( ) = optional

Contact us

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.For more information see REU615 Product Guide or contact us:

ABB Oy, Distribution AutomationP.O. Box 699

FI-65101 VAASA, Finland

Phone: +358 10 22 11

Fax: +358 10 22 41094

ABB Limited, Distribution AutomationManeja, Vadodara – 390013, India

Phone: +91 265 260 4386

Fax: +91 265 263 8922

www.abb.com/substationautomation

reu615 broch 757062 lrenc

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