Control

REX640 integrates functionality for controlling objects such as

circuit breakers, disconnectors, earthing switches, on-load tap

changers and Petersen coils via the LHMI or by means of

remote controls. The relay includes three circuit breaker control

blocks. In addition, the relay features 14 disconnector control

blocks intended for the motor-operated control of

disconnectors or a circuit breaker truck and three control

blocks intended for the motor-operated control of the earthing

switch. Furthermore, the relay includes eight additional

disconnector position indication blocks and three earthing

switch position indication blocks that can be used with

disconnectors and earthing switches that are only manually

controlled.

The touch screen LHMI supports a single-line diagram with

control points and position indication for the relevant primary

devices. Interlocking schemes required by the application are

configured using Signal Matrix or Application Configuration in

PCM600.

COM600S features a Web browser-based HMI, which provides

a customizable graphical display for visualizing single-line

mimic diagrams for switchgear bay solutions. The Web HMI of

COM600S also provides an overview of the whole substation,

including relay-specific single-line diagrams, which makes

information easily accessible. Substation devices and

processes can also be remotely accessed through the Web

HMI, which improves personnel safety.

In addition, COM600S can be used as a local data warehouse

for the substation’s technical documentation and for the

network data collected by the devices. The collected network

data facilitates extensive reporting and analyzing of network

fault situations by using the data historian and event handling

features of COM600S. The historical data can be used for

accurate monitoring of process and equipment performance,

using calculations based on both real-time and historical

values. A better understanding of the process dynamics is

achieved by combining time-based process measurements

with production and maintenance events.

COM600S can also function as a gateway and provide

seamless connectivity between the substation devices and

network-level control and management systems, such as

MicroSCADA Pro and System 800xA.

The GOOSE Analyzer interface in COM600S enables the

monitoring and the analysis of the horizontal IEC 61850

application during commissioning and operation at station

level. It logs all GOOSE events during substation operation to

enable improved system supervision.

Supported ABB solutions

The REX640 protection relay together with the Substation

Management Unit COM600S constitutes a genuine IEC 61850

solution for reliable power distribution in utility and industrial

power systems. To facilitate the system engineering, ABB’s

relays are supplied with connectivity packages. The

connectivity packages include a compilation of software and

relay-specific information, including single-line diagram

templates and a full relay data model. The data model includes

event and parameter lists. With the connectivity packages, the

relays can be readily configured using PCM600 and integrated

with COM600S or the network control and management

system MicroSCADA Pro.

REX640 offers native support for IEC 61850 Edition 2 including

binary and analog horizontal GOOSE messaging. In addition, a

process bus enabling sending and receiving of sampled values

of analog currents and voltages is supported.

Unlike the traditional hardwired, inter-device signaling, peer-to

peer communication over a switched Ethernet LAN offers an

advanced and versatile platform for power system protection.

Among the distinctive features of the protection system

approach, enabled by the full implementation of the IEC 61850

substation automation standard, are fast communication

capability, continuous supervision of the protection and

communication system’s integrity, and flexible reconfiguration

and upgrades. This protection relay series is able to optimally

use the interoperability provided by the IEC 61850 Edition 2

features.

The LHMI presents pages in two categories: the Operator

pages and the Engineer pages. The Operator pages include the

ones which are typically required as a part of an operator’s

normal activities, such as a single-line diagram, controls,

measurements, events, alarms, and so on. The Engineer’s

pages include specifically designed pages supporting relay

parametrization, troubleshooting, testing and commissioning

activities.

The Operator pages can be used as such or customized

according to the project’s requirements using Graphical Display

Editor (GDE) within the PCM600 software tool. The Engineer

pages are fixed and cannot be customized.

The Operator pages can be scrolled either by tapping the Home

button or by swiping the actual pages. The Engineer pages are

accessible by touching the upper horizontal section of the

screen.

The LHMI is an accessory for the relay which is fully operational

even without the LHMI. The relay communication card has a

dedicated port where the LHMI is connected using an RJ-45

connector and a CAT6 S/FTP cable. The LHMI can be

connected to the relay also via station communication network

if a longer distance is required between the relay and the LHMI.

Additionally, the LHMI contains one Ethernet service port with

an RJ-45 connector and one USB port. The service port can be

used for the PCM600 connection or for Web HMI connection.

Data transfer to a USB memory is enabled via the USB port. By

default the USB port is disabled and has to be taken into use

with a specific parameter.

Local HMI

The LHMI uses rugged 7-inch high resolution color screen with

capacitive touch sensing technology. The user interface has

been carefully designed to offer the best situational awareness

to the user. Visualization of the primary process measurements,

events, alarms and switching objects’ statuses makes the local

interaction with the relay extremely easy and self-evident. The

LHMI provides a control point for the selected primary devices

via pop-up operator dialogs.

Additionally, the LHMI supports the engineer during the relay’s

testing, commissioning and troubleshooting activities. The

information, traditionally accessible through different paths

within the menu structure, is provided in collectively grouped

and visualized format.

The Home button at the bottom of the LHMI indicates the

relay’s status at a glance. In normal situations, the Home button

shows a steady green light. Any other situation that requires the

operator’s attention is indicated with a flashing light, a red light

or a combination of these.

Description

REX640 is a powerful all-in-one protection and control relay for

use in advanced power distribution and generation applications

with unmatched flexibility available during the complete life

cycle of the device – from ordering of the device, through

testing and commissioning to upgrading the functionality of the

modular software and hardware as application requirements change.

The modular design of both hardware and software elements

facilitates the coverage of any comprehensive protection

application requirement that may arise during the complete life

cycle of the relay and substation.

REX640 makes modification and upgrading easy and pushes

the limits of what can be achieved with a single device.

Application packages

REX640 offers comprehensive base functionality. However, it is

possible to further adapt the product to meet special installation

needs by including any number of the available optional

application packages into a single REX640 relay. For the

selected application packages, the functionality can be

extended by including the related add-on package. The

REX640 connectivity package guides the engineer in optimizing

the application configuration and its performance.

Local HMI

The LHMI uses rugged 7-inch high resolution color screen with

capacitive touch sensing technology. The user interface has

been carefully designed to offer the best situational awareness

to the user. Visualization of the primary process measurements,

events, alarms and switching objects’ statuses makes the local

interaction with the relay extremely easy and self-evident. The

LHMI provides a control point for the selected primary devices

via pop-up operator dialogs.

• The default 615 series IED SCL export from PCM600 contains five default

client definitions, “Client1”…”Client5”, which are used by all the RCBs.

MicroSCADA and COM600 clients can use the client definitions directly. If

other clients need to be added to the IET600 project, import the ICD file

describing the client data model to the project and attach the file to the same

IEC 61850 subnetwork in the Communication tab.

• Create the bus connections for the IEC 61850 clients.

Importing a new IEC 61850 client

Adding a new IEC 61850 client to an IET600 project is a two-step operation. The

client must be first created using the Create New IED function, after which the

Update IED function can be used to import the related ICD (or CID) file.

1. To create an IED, click the IEDs tab in the navigation pane.

2. Click the root node in the IED tree.

3.Right-click the node and click Create New IED on the shortcut menu.

Creating a GOOSE data set

Define the sending data set used by the GOOSE control block. With the 615 series

IEDs, the sending GOOSE data set can have at maximum 20 data attributes to

minimize the message handling load in receiver and sending IEDs.

All data sets must be configured under the logical node LLN0 and must be

provided with names unique within the IED. In 615 series IEDs there are a

maximum of four GOOSE control blocks allowed, which effectively limits the

relay to four data sets for GOOSE as there is a one-to-one correspondence between

the GOOSE control blocks and GOOSE data sets. Typically it is sufficient to

define a single data set and control block for an application.

When a 615 series IED is configured to send measurements, the analog, integer or

counter type of data should be placed on its own dataset. The triggering of analog

type of data sending is controlled by deadband handling, zero-point clamping and

limit supervision.

The horizontal communication configuration consists of the IEDs’ GOOSE control

block, data set and GOOSE input configuration. The result of the configuration

work is a system configuration file which can be downloaded to the IEDs. The

used files in the workflow are IEC 61850 standard format SCL files.

Configuring horizontal communication

See detailed descriptions of the steps in corresponding chapters.

1. Add devices to a PCM600 project.

2. Export the SCD file.

3. Import the SCD file to IET600.

4. Engineer the GOOSE connections between the devices

4.1. Define the published GOOSE data and control blocks.

4.2. Define the subscribing IEDs for the GOOSE data.

5. Export the SCD file back to PCM600.

6. In PCM600. engineer the IED applications with GOOSE inputs.

GOOSE is used in substation automation for fast horizontal communication

between the IEDs. GOOSE can be used for direct data exchange, for example, of

interlocking and blocking information between IEDs. According to the IEC

61850-8-1 standard, GOOSE uses a publisher/subscriber profile in which

information is shared from one IED to one or several IEDs by using Ethernet

multicast messages. A message is an image of a sent IEC 61850 data set that is

defined in the configuration.

IET600 is used to configure the vertical and horizontal communication properties

of the 615 series IEDs.

A 615 series IED can send any type of status or measurand data in the GOOSE

messages from its IEC 61850 data model. The status data response time, that is, the

time it takes for the application to handle a received GOOSE message and to send

the concerned data back to the network, is with the 615 series IEDs below 3 ms.

The response time fulfils the tightest Type 1A, Class P2/3 requirements of the

standard.