Condition Monitoring; Self-Supervision; Access Control; Station Communication - ABB ABILITY SSC600 Product Manual

Product Guide
SSC600
Product version: 1.0

10. Condition monitoring

The condition monitoring functions of the device constantly mon-
itor the performance and the condition of the circuit breaker. The
monitoring comprises the spring charging time, SF6 gas pressure,
the travel time and the inactivity time of the circuit breaker.
The monitoring functions provide operational circuit breaker
history data, which can be used for scheduling preventive circuit
breaker maintenance.
In addition, the device includes a runtime counter for monitoring
of how many hours a protected device has been in operation thus
enabling scheduling of time-based
preventive maintenance of the device.

11. Self-supervision

The devices built-in self-supervision system continuously monitors
the state of the device hardware and the operation of the device
software. Any fault or malfunction detected is used for alerting the
operator.
A permanent device fault blocks the protection functions to pre-
vent incorrect operation.

12. Access control

To protect the device from unauthorized access and to main-
tain information integrity, the device is provided with a four-level,
rolebased authentication system with programmable individual
passwords for the viewer, operator, engineer and administrator
levels. The access control applies to the Web HMI and PCM600.

13. Station communication

The device supports a range of communication protocols in-
cluding IEC 61850 Edition 1, Edition 2 and IEC 61850-9-2 LE.
Operational information and controls are available through these
protocols.
The IEC 61850 protocol is a core part of the device as the
protection and control application is fully based on standard
modelling. The device supports Edition 2 and Edition 1 versions
of the standard. With Edition 2 support, the device has the latest
functionality modelling for substation applications and the best
interoperability for modern substations. It incorporates also the full
support of standard device mode functionality supporting different
test applications. Control applications can utilize the new safe and
advanced station control authority feature.
The IEC 61850 communication implementation supports mon-
itoring and control functions. Additionally, parameter settings,
disturbance recordings and fault records can be accessed using
the IEC 61850 protocol. Disturbance recordings are available to
ABB
any Ethernet-based application in the standard COMTRADE file
format. The device supports simultaneous event reporting to five
different clients on the station bus. The device can exchange data
with other devices using the IEC 61850 protocol.
The device can send binary and analog signals to other devices
using the IEC 61850-8-1 GOOSE (Generic Object Oriented Sub-
station Event) profile. Binary GOOSE messaging can, for example,
be employed for protection and interlocking-based protection
schemes. The device meets the GOOSE performance require-
ments for tripping applications in distribution substations, as
defined by the IEC 61850 edition 2 standard (<3 ms point-to-point
data exchange between the devices). The device also supports
the sending and receiving of analog values using GOOSE mes-
saging. Analog GOOSE messaging enables easy transfer of ana-
log measurement values over the station bus, thus facilitating for
example the sending of measurement values between the devices
when controlling parallel running transformers.
The device also supports IEC 61850 process bus by receiving
sampled values of voltages and currents. With this functionality
the galvanic interpanel wiring can be replaced with Ethernet com-
munication. The measured values are received as sampled values
using IEC 61850-9-2 LE protocol. SSC600 devices with process
bus based applications use IEEE 1588 for high accuracy time
synchronization.
For redundant Ethernet communication, the device offers either
two optical or two galvanic Ethernet network interfaces, depend-
ing on the product variant. Ethernet network redundancy can be
achieved using the parallel redundancy protocol (PRP). In addition
to the process communication, SSC600 also has dedicated Eth-
ernet interfaces for local WHMI and engineering.
The IEC 61850 standard specifies network redundancy which
improves the system availability for the substation communica-
tion. The network redundancy is based on protocols defined in
the IEC 62439-3 standard: PRP protocol. The protocol is able to
overcome a failure of a link or switch with a zero switch-over time.
In the protocol, each network node has two identical Ethernet
ports dedicated for one network connection. The protocol relies
on the duplication of all transmitted information and provide a zero
switchover time if the links or switches fail, thus fulfilling all the
stringent real-time requirements of substation automation.
In PRP, each network node is attached to two independent net-
works operated in parallel. The networks are completely separated
to ensure failure independence and can have different topologies.
The networks operate in parallel, thus providing zero-time recovery
and continuous checking of redundancy to avoid failures.
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