Feeder automation systems in Taiwan monitor and control power distribution networks. Korenix's fiber Ethernet switches and redundant ring technology were used to implement the fiber network connecting feeder terminal units along the distribution system. This enabled failure detection, identification, recovery, and reporting to minimize error handling time and ensure continuous network service when failures occurred on the fiber links.

1. Enabling FDIR on
Feeder Automation
Data Network
Power Distribution
Feeder Automation

2. Successful story www.korenix.com1
Application Story
Feeder automation, a part of power distribution, has the function of monitoring, control,
SCADA and FDIR on the distribution network. The system includes feeder dispatch and
control center (FDCC), feeder remote terminal unit (FRTU) and feeder terminal units (FTU).
Renewing power distribution system in Taiwan is the main task of its smart grid network
development. Since 2009 TPC (TaiPower Company), the national electricity company of
Taiwan, has started to upgrade feeder automation systems with up-to-date information
and communication technologies. More than 8,500 pcs of FTU have been upgraded in the
past few years.
While the distribution network covers a wide range of areas, it is subjected to heavy
weather and environmental conditions which may result in inevitable failures. TPC chose
HCE as its FTU vender and system integrator to build a reliable and high quality
distribution network.
Korenix’ feeder automation network solution was adapted to implement the fiber
network along the distribution system. Each JetNet 4508f, Korenix’ industrial 6+2 fiber
Ethernet switch, in the FTU transmitted the data to the SCADA system. By enabling
Korenix redundant ring technology, the MSR, any failure on the fiber links can be easily
detected, identified, and recovered (FDIR). The failure location is also reported to
administrators through Korenix visualized network management system, the JetView pro,
which, as a result, minimizes the error handling time.

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Configuration Error &
Error Position
Substation central monitoring
Pole mount
line switch
FTU
Pad mount
line switch
FTU
JetNet 4508f
Industrial 6+2 fiber Ethernet switch
Redundant Fiber Network
Korenix MSR Redundant Ring
(Recovery Time < 5 ms, Restoration Time = 0ms)
Successful storywww.korenix.com 2
Failure Identification
In addition to identifying type of failures
(for example broken link, error in the ring
configuration, broadcast storm problem
and so on), the system identifies the
failure position as well.
Failure Recovery/Restoration
A link failure is recovered within 5 ms to
ensure the continuous network service.
During link restoration, Korenix Seamless
Restoration guarantees a 0 ms process
without any side effect to the network.
Solution
JetView pro
Network Management System
Failure Detection
The solution continuously monitors the
health of the network. Warning events are
reported to field engineers and central
officers by system LED, email, SNMP trap,
or the visualized network management
system, the JetView Pro.
Ring Status LED identifies failure type and position.
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Ring Normal
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Link Broken &
Failure Position

4. Successful story www.korenix.com3
Product
Green, Efficiency
Minimum 9.5VDC power
input, and it consumes
less than 8W with full
loading. This prolongs
FTU’s life time especially
when the FTU operates
on its internal
UPS/battery.
Hardened for Extreme
The heat-generating
components are attached to
the entire aluminum body.
This outstanding cooling
effect helps JetNet 4508f
work at -40~75oC with IP31
protection.
Slim, Space Saving
Just as wide as a
business card saves the
space of the FTU box.
IP31
Korenix Technology Co., Ltd.
JetNet 4508f Industrial Ethernet Switch
• Six 10/100TX and two 100Base-FX fiber ports
• MSR Redundant Ring (recovery time <5ms)
• MSTP, RSTP, VLAN, QoS, IGMP Snooping, Trunking, LLDP
• Modbus/TCP, SNMP, Web, Telnet, Serial console
• Low power consumption, dual DC10~60V Power Input
• IP31 aluminum housing
• Operating temperature -40~75oC
JetView Pro Industrial Network Management System
• Automated network discovery and topology visualization
• Device and MSR group management
• Performance management
• Accounting management
• Event handling
• Open standard, manage up to 1024 network nodes
Email: sales@korenix.com Web: www.korenix.com
Phone: +886-2-8911-1000 Fax: +886-2-2912-3328
Address: F2, No. 188, Pao-Chiao Rd. Shing-Tien City, Taipei 23145, Taiwan