SEATTLE CITY LIGHT DISTRIBUTION AUTOMATION

Transcription

1 SEATTLE CITY LIGHT DISTRIBUTION AUTOMATION Ryan Pham Project manager 0/27/206

2 AGENDA. Distribution automation background 2. Seattle City Light pilot project 3. System performance windstorm 08/29/5 4. Lessons learned 2

3 FAULT LOCATION, ISOLATION AND SERVICE RESTORATION (FLISR) SYSTEM Self-healing grid Distribution Automaton 3

4 RESTORATION TIME LINE WITH AND WITHOUT DA 5-30 minutes minutes Crews 00:00 Travel - 00:30 Time 0:0-02:0 Time to Perform Manual Switching 5-30 minutes Fault 00:30 Investigation - 0:0 & Patrol Time -4 hours 02:0-06:0 Repair Time Without DA Power restored to 40%-80% customers in minutes Power restored remaining customers in -4hours later FAULT 00:00 OCCURS 5-30 minutes <5 minutes 00:00-00:05 00:00 Travel - 00:30 Time 0-5 minutes 00:30-00:5 Patrol Time 0:0 Fault Located POWER 02:02 RESTORED TO CUSTOMERS ON HEALTHY SECTIONS OF FEEDER 00:5-4 hours - 04:49 Repair Time 06:02 Feeder Back To Normal With DA Power restored to 50%-90% customers within 5 minutes (Seattle City Light scheme: within 30 seconds) Power restored to remaining customers in minutes earlier than non-da feeders. FAULT OCCURS 00:00 POWER 00:05 Fault 00:50 Feeder Located 04:50 Back RESTORED TO To Normal CUSTOMERS ON HEALTHY SECTIONS OF FEEDER 4

5 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Event: System Normal 5

6 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 0 Seconds Event: Fault appear- FDR BKR Trip 6

7 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 Fault Still Present SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 4 Seconds Event: FDR BKR Reclose Attempt # 7

8 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 4 Seconds Event: FDR BKR Trip 8

9 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 Fault Still Present SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 9 Seconds Event: FDR BKR Reclose Attempt #2 9

10 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 9 Seconds Event: FDR BKR Trip 0

11 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Fault Isolated Feeder Breaker 2705 SW 936 SW 092 SW 597 Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 25 Seconds Event: SW 52 Trip

12 Shoreline Substation SW 52 SW 89 SW 75 SW 2303 SW 487 Feeder Breaker 2705 SW 936 SW 092 SW 597 Close tie switch Feeder Breaker 2703 SW 607 SW 2297 SW 583 SW 84 SW 536 SW 685 Time : 30 Seconds Event: Close tie SW, restore power 2

13 DA- TWO BIG QUESTIONS: DA Intelligence Style Communication option 3

14 CENTRALIZED VS SUBSTATION CENTERED VS DISTRIBUTED INTELLIGENCE - Centralized intelligence o Distribution Management System (DMS) serves as the brain of the DA system o Full system view for restoration, optimize the restoration in the large scale. o Integrate with other system and applications. o Cons: Longest deployment time Integration with DMS, fine-tuning, are time-consuming Expensive Slowest restoration times A point-to-multi-point system can be overwhelmed. 4

15 CENTRALIZED VS SUBSTATION CENTERED VS DISTRIBUTED INTELLIGENCE - 2 Substation centered intelligence o Use main logic controls at the distribution substations o Pros and Cons are somewhere between Centralized and Distributed 5

16 CENTRALIZED VS SUBSTATION CENTERED VS DISTRIBUTED INTELLIGENCE - 3 Distributed intelligence o Peer-to-Peer Devices o Fastest restoration o Fastest to deploy o Able to be deployed with or without DMS or GIS. o Cons: Less efficient in large scale restoration optimization 6

17 COMMUNICATION Main Criteria: ocapacity & latency oreliability ocost osecurity otraffic types & networking standards oreputation ocoverage oother Smart Grids usage 7

18 COMMUNICATION OPTIONS FOR DA Fiber o Wide bandwidth, fast, secure, reliable, wellestablished technology, lot of rooms for future growth, applications and for other Smart grid projects o Expensive Radio oleast expensive 8

19 DA PILOT SYSTEM OVERVIEW Deployed on two feeders out of Shoreline substation: 2703 and 2705 at Shoreline & Lake Forest Park Utilizing distributed intelligence S&C ScadaMate switches Communication: fiber optics loop Integrated with EMS, PI historian Fully automated, supervisory and remote control Fast, secured remote access for relay technicians Online since 6:30 am 06/27/205 9

20 DA PILOT SYSTEM GOOGLE EARTH MAP 20

21 SIMPLIFIED NETWORK DIAGRAM EMS Shoreline Substation 2705 Backbone Fiber 2703 Relay Room 2

22 SHORELINE DA NETWORK DIAGRAM 22

23 LOOP COMMUNICATION FAULT RECOVER IEEE 802.D Spanning Tree Protocol (STP) ofault recovery time is too slow ~ one minute IEEE 802.w Rapid Spanning Tree Protocol (RSTP) ofaster than STP, but still low for our scheme ~ few seconds Vendors proprietary protocols Siemens enhanced RSTP ofast recovery time: in ms Interoperability 23

24 TEST LAB DA BLOCK DIAGRAM Test EMS SOC Test Lab DA block diagram with 3 controllers KEY Ethernet Serial fiber DIGI Terminalserver NSC Com lab J-MUX Ethernet SW RTAC Router Ethernet SW Ethernet SW Ethernet SW J-MUX 24

25 STANDARDIZATION Allows to program and configure devices in an efficient manner with minimal errors Familiarity from job to job for engineers, constructions crews, communication and relay technicians Reduce debugging time. IP, DNP, Modbus, point lists Naming convention Equipment, constructions. 25

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29 NEW DESIGN SCADAMATE SWITCH WITH GROUND LEVEL DISCONNECT HANDLE 29

30 GROUND LEVEL DISCONNECT HANDLE 30

31 SUMMER STORM 08/29/205 The Strongest Summer Storm In Northwest History Saturday was a historic day during a historic summer. On that day western Oregon and Washington was lashed by the strongest summer windstorm in its historic record. 3

32 WINDSTORM 08/29/205 WIND SPEED 32

33 WINDSTORM DIAGNOSTIC OVERVIEW The DA system handled four different storm contingencies and executed logic to mitigate as many customer outages as possible. In both automatic and manual modes, the system functioned properly. Automatic Mode Event : Two faults appeared on FDR2705. DA System Response: Isolated affected sections, and shifted unaffected load on FDR2705 to FDR m Event 2: Two new faults appeared on FDR2703. DA System Response: Isolated affected sections, kept power service to other segments. 32m Event 3: Fault near substation, FDR2703 is lost. DA System Response: No available source to route power. Do not attempt to close. Manual Mode Event 4: Dispatcher located new fault while restoring FDR2705. DA System Response: Dispatcher remotely isolated fault, restored power to 80% of total customers on FDR

34 08/205 WINDSTORM System Normal Diagnostics 34

35 08/205 WINDSTORM Event : Faults Appear On System Diagnostics 8/29/5, 2:27pm Fault between SW2303 and SW487. Fault between Feeder Breaker 2705, SW52, and SW936. Feeder Breaker 2705 opened. 35

36 08/205 WINDSTORM Event (cont.): DA System Isolates The Faults Diagnostics Team isolated the fault. Team isolated the fault. 36

37 08/205 WINDSTORM Event (cont.): DA System Transfers Power 00 Customers 808 Customers 323 Customers 35 Customers Diagnostics SW092 closed to transfer power from Feeder SW597 closed to transfer power from Feeder >DA System Alert: 2483/3869 customers successfully restored on Feeder

38 08/205 WINDSTORM Event 2: Faults Appear On System Diagnostics 8/29/5, 2:32pm Fault between SW89, SW092, SW75. Fault between SW536 and SW685. Feeder Breaker 2703 opened. 38

39 08/205 WINDSTORM Event 2 (cont.): DA System Isolates The Faults Diagnostics Team isolated the fault. Team isolated the fault. 39

40 08/205 WINDSTORM Event 2 (cont.): Power is restored 74 Customers 255 Customers 5 Customers 266 Customers 07 Customers Diagnostics Feeder Breaker 2703 closed and restored power. >DA System Alert: 87/348 customers successfully restored on Feeder

41 08/205 WINDSTORM Event 3: Fault Appears On System Diagnostics 8/29/5, 0:04pm Fault between Feeder Breaker 2703 and SW607. Feeder Breaker 2703 opened. >ALERT: 5 KV line fell onto 26 KV line. >DA System Alert: No available power sources to reroute. 4

42 08/205 WINDSTORM Event 4: Crews Work On Restoring Feeder 2705 Diagnostics 42

43 08/205 WINDSTORM Event 4 (cont.): Fault Appears On System Diagnostics 8/30/5, 2:34pm Remote Action: Dispatcher has sent remote command to close SW487. Fault between SW487 and SW

44 08/205 WINDSTORM Event 4 (cont.): Feeder 2705 is successfully restored 00 Customers 983 Customers 323 Customers 35 Customers 403 Customers Diagnostics Feeder Breaker 2705 closed and restored power. >DA System Alert: 306/3869 customers successfully restored on Feeder

45 WINDSTORM 8/29/5 DISTRIBUTION AUTOMATION (DA) SYSTEM PERFORMANCE 4500 Customer Outage Analysis Number of outage customers Event - Feeder 2705 Event 2 - Feeder 2703 Event 4 - Feeder 2705 Without DA With DA Assuming the event 3 which involved 5 kv outage had not occurred 45

46 WINDSTORM 8/29/5 9,000,000 Outage Customer Minutes Analysis 8,000,000 7,90,480 7,000,000 6,000,000 5,598,443 Outage customer minutes 5,000,000 4,000,000 3,340,80 3,000,000 2,000,000 2,005,542,000, ,204 5,544 Event - feeder 2705 Event 2 - feeder 2703 Event 4 - feeder 2705 Without DA With DA Assuming the event 3 which involved 5 kv outage had not occurred 46

47 LESSONS LEARNED A lab, even small one, is critical for testing, troubleshooting and training. Fiber optics loop was intact throughout the serve storm The fast, secure remote access greatly reduce crew times for event data retrieval and configuration update Secure WIFI is a nice feature, reduce operation cost, and enhanced crew safety The system performed as intended. The Distribution Automation scheme identified, isolated, and rerouted after the faults appeared. Dispatchers were able to identify and send line crews to fix affected line segments faster than conventional methods. 47

48 QUESTIONS? THANK YOU