Westar EnergyUnderground Networks

Current SystemWichita

~180 Network Transformers Not including spot network transformers

Topeka26 Network Transformers

Rest of Topeka downtown served from one feed, with backup feed available

Future of NetworkMaintain current size

Continue to add new customers in downtown Wichita and Topeka to network

Add communicationsUtilizing ETI RCMs

Adding CommunicationsDifficult to predict exact load flows in a

secondary networkAddition of communications devices allows

the network to be monitored via SCADA

ETI Remote Communication ModulesDevices used to monitor power flow from

network protectorsSpeaks DNP3 without needing translatorIn the future, we will install communicating

relays in network protectorsCommunicating relays will perform the same

communications functions as RCMs without the need for separate RCM box

Adding CommunicationsOriginal plan was to add ETI Remote

Communication ModulesInformation sent back to SCADA system via

Radius PDR RadiosDifficult to maintain line-of-sight from

downtown Wichita to receiving antennaeCompleted installation on 20 Vault

Transformers

Adding Communications

Adding Communications

Adding CommunicationsFuture Plans are to utilize fiber to transmit

signal back to SCADAUse RuggedCom devices to convert from

fiber to blue hose cableBlue hose cable daisy chained between

transformers

Adding Communications

Questions?