Spencer Murray, Sr. Telecom Eng.

Transcription

1 Distribution Automation Spencer Murray, Sr. Telecom Eng.

2 Why FortisAlberta choose Distribution Automation? Reliability (SAIDI, SAIFI) Operational benefits: Load balancing between substations. Real-time load values of the system. Remote Switching Reducing Customer Outage Time 2

3 FortisAlberta Restoration Permanent short circuit (fault) occurs on a distribution feeder, all or some of the customers served by the feeder will experience a loss of power until field crews are able to restore service. Field crew activities : 1) Traveling to the general vicinity of the feeder fault, based on customer calls and feeder protective devices 2) Patrolling the feeder to determine the exact location of the fault 3) Isolate the damaged section by performing manual switching and restoring customers as quickly as possible. 4) Repairing the damage 5) Performing manual switching to restore the feeder to its original configuration. This restoration can take 30 minutes or longer. 3

4 Distribution Automation Restoration Distribution automation provides a means to perform activities 1 through 3 listed on the previous page. With S&C Electric automated switches and the IntelliTeam software will restore some of the customers on the feeder in one minute or less. The fault is isolated between two switches which decrease the patrolling and the restoration time. Fewer customers are affected by the fault and the customers that are affect are restored quicker. This improves our customer satisfaction, SAIDI and SAIFI. 4

5 Our Obstacles: No Control Center No Communications Infrastructure No Substation RTU How do we know a switch operated or Normally Opened moved because of fault How can we perform switching operations remotely? 5

6 S&C Electric Company Equipment (25KV) Padmounts: PMH-9, PMH-10 & PMH-11 SCADA-Mate Switch, 3 pole switch IntelliRupter Pulse Closer IntelliTEAM II Automatic Restoration System 6

7 Monitoring Control Application (MCA) Requirements Report switch status and also something we could use to operate the switches. Accessible by our PLTs from their trucks because we have no control center. Visual of the substation and real time load values of the feeders, but no control of anything in the sub. 7

8 Bow Networks elan Front End Processor (FEP) Acts as a SCADA master retrieving point data from the field devices Issues control commands to the field devices elan HMI Provides a secure web-launch visualization of the field data Provides a single line diagram of Airdrie and St. Albert Universal DNP Gateway (UDG) Collects real-time data from the GE D20 s in the substation 8

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10 Airdrie MCA 10

11 199s Substation 11

12 5803 Control/Padmount PMH-11 12

13 View Detail Summary 13

14 IntelliRupter PulseCloser 14

15 St Alberta MCA 15

16 Communications: Switches Airdrie DA UtiliNet Radio Mhz 96Kbps 9.6Kbps Node Identification is a GPS coordinates St. Albert DA SpeedNet Radio Mhz 650Kbps IP Address 16

17 Communications: Head End HeadEnd Radio: Located at service point office Backhaul the data to elan FEP where Bow Networks host our elan HMI for Airdrie and St. Albert PLT Access Every PLT has a laptop and EVDO modem in their truck that t allows the access to the server. Citrix 17

18 Reliability Airdrie DA installed late Total unplanned outages: 25087hours Saved 8574 customer hours, 25% 2009 Added 2 new feeders from 186S Dry Creek sub in 2009 We have had a couple of operations due to public contact and weather Overall our SAIDI/SAIFI has not improved but we also have realized that our SAIDI/SAIFI results would be worse if we didn t have DA. 18

19 Our Experiences PLTs use it as a remote switching tool PLT s use it to look at loading conditions New set of tools required for Metering Group Radio s Ethernet Addressing If the same fault occurred a the same spot it doesn t mean the DA will heal itself the same way as last time. 19

20 Questions? 20