Lugo-Victorville RAS. Presentation to RASRS. November 14, Edison Team Members:

Transcription

1 Lugo-Victorville RAS Edison Team Members: Fernando Benavides, Generation Interconnection Planning Bill Zhang, Protection Engineering Obinna Obah, Power System Controls Larry Wang, Telecomm Presentation to RASRS November 14, 2018

2 OBJECTIVE APPROVAL OF SCE'S LUGO-VICTORVILLE RAS MODIFICATION 2

3 Topics Fernando Benavides Background Purpose/Operating Principles Planning Studies Obinna Obah Power System Controls Larry Wang Telecommunications Bill Zhang Design Commissioning 3

4 LUGO-VICTORVILLE RAS Background Purpose/Operating Principles Fernando Benavides 4

5 BACKGROUND The Lugo-Victorville RAS was last approved by the RASRS in August of 2016 The RAS was designed to protect the Lugo-Victorville 500 kv T/L from an identified thermal overload caused by the N-1 of the Eldorado-Lugo 500 kv T/L The RAS is approved to trip four (4) PV plants in the Eldorado Area: Silver State South Solar (250 MW) Desert Stateline (300 MW) Copper Mountain 2 (92 MW) Copper Mountain 4 (155 MW) The RAS is classified and approved as a LAPS Informational Presentation was given to the RASRS on August 1, 2017 SCE to trip generation within another transmission service providers territory 5

6 BACKGROUND Generation Interconnection Studies have identified the need to trip Eldorado area generation for the loss of the Eldorado-Lugo 500 kv T/L to prevent thermal overloads on the LADWP/SCE jointly owned Lugo-Victorville 500 kv T/L 6

7 AREA MAP OF PARTICIPATING GENERATORS 7

8 BACKGROUND On October 13, 2011 Valley Electric Association (VEA) and the CAISO entered into a Transition Agreement which established the process for VEA to join the CAISO Balancing Authority Area (BAA) In January of 2013, VEA joined the CAISO BAA Primarily consists of 230kV and 138kV facilities 230kV system later acquired by GridLiance West Transco LLC (GWT) As part of the Generation Interconnection Study Process, projects requesting to interconnect within the GWT and VEA Electric Systems are subject to participate in existing RAS s within the SCE Electric System Lugo-Victorville RAS Joint-studies are completed annually between SCE, VEA and the CAISO SCE and VEA are seeking input/approval for a proposed design that would allow the tripping of generation requesting to interconnect within the GWT and VEA Electric Systems as part of the Lugo-Victorville RAS 8

9 BACKGROUND Sunshine Valley Solar Proposed 100 MW Solar Photovoltaic Project Amargosa Valley, Nye County, Nevada Interconnecting to the VEA Valley 138 kv Substation Advanced Rail Energy Storage (ARES)-To be presented at a future date Proposed 44 MW Energy Storage Project Pahrump, Nye County and Clark Counties, Nevada Interconnecting to the GWT Gamebird 230 kv Substation Generation Interconnection Studies have identified these projects as having to participate in the Lugo-Victorville RAS CAISO Queue # Sce Project ID Project Name Point of Interconnection Technology Status ISD Size (MW) Q993/Q994 TOT678/ TOT679 Sunshine Valley Solar Valley 138 kv Solar Photovoltaic IA with VEA 6/1/ Q1064 TOT728 ARES (Future) Gamebird 230 kv Energy Storage UFA with SCE 7/30/

10 Single Line Diagram of Eldorado Area 10

11 Lugo-Victorville RAS Area Map - SCE facilities and Participating Generating Units 11

12 Lugo-Victorville RAS Area Map - VEA facilities and Participating Generating Units 12

13 Lugo-Victorville RAS Operation SCE to send trip signal to each generating facility through planned telecom facilities SCE GWT VEA Signal to open all 34.5 kv CB s at the generating facility Signal to be sent from the SCE Eldorado Substation through telecom facilities placed as part of the planned Bob-Eldorado 230 kv Line 2.5 mile planned intertie 13

14 AREA MAP-Partial Map of GWT and VEA Facilities (New Participants) 14

15 PURPOSE/OPERATING PRINCIPLES The purpose of the Lugo-Victorville RAS is to prevent thermal overloads on the Lugo-Victorville 500 kv T/L, upon loss of the Eldorado-Lugo 500 kv T/L, by tripping selected solar generation projects in the SCE, GWT, and VEA service territories. Contingencies/Actions: A. N-1 of Eldorado-Lugo 500 kv T/L I. Trip generation in the Eldorado Area Existing Generation (797 MW) Sunshine Valley Solar (100 MW)-New Participant ARES (44 MW)-New Participant Total Generation Armed (941 MW) Operating Date: August 11,

16 LUGO-VICTORVILLE RAS PROJECT Planning Studies The purpose of the RAS Arming Study is to identify the appropriate RAS arming levels required under all plausible system operating conditions. The power flow cases were developed from the WECC base cases and SCEs transmission expansion base case series representing summer peak and spring off peak load conditions The RAS Arming Study looked at a wide range of load levels, generation levels, and voltage conditions, in order to be compliant with NERC Reliability Standards, WECC Regional Criteria, and CAISO Planning Standards. Through this type of analysis, the RAS Arming Study identifies the appropriate contingencies that need to be monitored by the RAS. The RAS Arming Study also identifies the pre-contingency system conditions that should trigger RAS arming, and what units of generation should be designed to participate in the RAS. 16

17 LUGO-VICTORVILLE RAS PROJECT Planning Studies (Cont.) Identified Issues: Thermal overload Lugo-Victorville 500 kv T/L The planning studies confirmed that the Lugo- Victorville RAS will contribute toward the mitigation When required, the CAISO will congestion manage flows on the Lugo- Victorville T/L (Path 61) such that generation tripped as part of the RAS will eliminate the overload. Congestion management initiated once post-contingency flows on Path 61 approach 3000 A. 17

18 LUGO-VICTORVILLE RAS PROJECT Study Assumptions The table below represents the generation that will be required to participate in the Lugo-Victorville RAS A total of 941 MW will be eligible for tripping ARES to be presented at a future WECC RASRS 18

19 LUGO-VICTORVILLE RAS PROJECT Study Assumptions Power Flow Study The study was based on forecasted load data for 2020 Generation in the study areas modeled at full output New generation modeled at full output East of Lugo stressed under various conditions Path 61 (Lugo-Victorville) modeled at maximum path rating of 2400 MW (east to west) Intermountain Power Plant DC (IPPDC) Line modeled up to 2400 MW (Max) West Of River (Path 46) modeled up to 10,500 MW (Path Rating = 11,200 MW) Analysis included combination of these flows (High IPPDC / Low WOR, Low IPPDC / High WOR, etc.) Transient Stability Studies 4 cycle 3-phase fault for N-1 of Eldorado-Lugo 500 kv T/L 4 cycle 3-phase fault with tripping of generation modeled at 3 seconds after fault is cleared The studies show that the system remains stable following a 4 cycle 3-phase fault and loss of the Eldorado-Lugo 500 kv T/L 19

20 LUGO-VICTORVILLE RAS PROJECT Stability Results: N-1 of Eldorado-Lugo 500 kv T/L Bus Voltage following 4 cycle fault No RAS 20

21 LUGO-VICTORVILLE RAS PROJECT Stability Results: N-1 of Eldorado-Lugo 500 kv T/L Bus Voltage following 4 cycle fault With RAS 21

22 LUGO-VICTORVILLE RAS PROJECT Stability Results: N-1 of Eldorado-Lugo 500 kv T/L Bus Frequency following 4 cycle fault No RAS 22

23 LUGO-VICTORVILLE RAS PROJECT Stability Results: N-1 of Eldorado-Lugo 500 kv T/L Bus Frequency following 4 cycle fault With RAS 23

24 LUGO-VICTORVILLE RAS PROJECT RAS Overview The RAS will be designed to trip generation consistent with the table below Notes: 1. Arming points 1 6 will be under the control of the automatic arming program. 1. Arming points 1 6 will be based on line flows on the Lugo-Victorville 500 kv T/L 2. Arming points 1-6 will be automatically armed whenever the associated generator is on line, and will be automatically disarmed whenever the associated generator is off line. 24

25 LUGO-VICTORVILLE RAS PROJECT RAS Overview Real Time Contingency Analysis (RTCA) CAISO Action Will calculate post-contingency flow on Lugo-Victorville for loss of Eldorado-Lugo RAS will arm generation once post-contingency flows reach 95% of the Lugo-Victorville emergency rating (3000 Amps) Will dynamically calculate how much generation needs to be armed If the RTCA fails for more than the preset time period, the RAS will switch to offline arming equation Magnitude of thermal overload dependent on various factors IPPDC Line Flow WOR Flows Series compensation levels Extended line outages scheduled for the next 2-3 years. Under certain stressed conditions, tripping all Lugo-Victorville RAS generation will not eliminate the overload Congestion management will be initiated anytime the RTCA show that post-contingency flow on Lugo-Victorville is approaching its 3000 Amp limit 25

26 RAS Classification SCE is classifying the Lugo-Victorville RAS as a LAPS for the following reasons: Less than 1,000 MW of generation at risk. No generation at risk due to failure of RAS to operate Thermal overload of Lugo-Victorville T/L would result No voltage violations identified CAISO will dispatch generation and reduce path flow to eliminate overload on Lugo- Victorville following failure of RAS to trip generation Less than 300 MW of load is at risk. No load is served out of Ivanpah, Primm, or Merchant East of Lugo is not a load serving area VEA/GWT Service Territory not impacted by loss of Eldorado-Lugo T/L No violation of TPL-001-WECC-CRT-3.1 SCE requests RASRS concurrence that the Lugo-Victorville RAS is a LAPS 26

27 RAS Classification 27

28 LUGO-VICTORVILLE RAS PROJECT Conclusion The RAS will arm generation once post-contingency flows reach 95% of the Lugo-Victorville emergency rating The RAS will initiate once an outage of the Eldorado-Lugo 500 kv T/L has been detected to prevent thermal overloads on the Lugo-Victorville 500 kv T/L. One new project is required to participate in the RAS Sunshine Valley Solar (100 MW) The RAS will trip a combination of or all of the eligible participating generation to mitigate thermal overloading. Up to 897 MW Once more generation interconnects in the Eldorado Area, the Lugo-Victorville RAS will need to be expanded to include those projects (An additional 44 MW is proposing to interconnect by 7/30/19). Transient stability studies concluded that the system will remain stable under the most stressed condition. 28

29 LUGO-VICTORVILLE RAS Protection Engineering Bill Zhang 29

30 LUGO-VIC RAS PROTECTION ENGINEERING Recap of Previously Approved Scheme Redundant identical systems Diverse redundant communications paths Mitigate for failed mitigation breakers Multiple means of arming Contingency-triggered logic Pre-contingency arming by automatic arming program N60 relays used throughout 30

31 LUGO-VIC RAS PROTECTION ENGINEERING RAS Block Diagram 31

32 LUGO-VIC RAS PROTECTION ENGINEERING What s New New redundant N60 monitoring relays at Mohave to monitor the Lugo-Mohave 500kV line. Existing N60 monitoring relays at Lugo New redundant N60 mitigating relays at Eldorado sending trips to Sunshine Valley Solar New diversely-routed telecomm paths from Eldorado to Sunshine Valley Solar via VEA s Bob Sub New redundant N60 tripping relays at Sunshine Valley Solar 32

33 LUGO-VIC RAS PROTECTION ENGINEERING Line Monitors One N60 relay monitors up to two 500 kv lines Line-Loss Logic: 52b contacts supervised by undercurrent element Separate 52b switches for each breaker Maintenance bypass switches for 52b inputs Alarms Relay Failure Alarm Communication Channel Failure Alarm Direct Device Off-line Direct Ring Break Communication Channel Trouble Alarm Excessive CRC Errors Excessive Unreturned Direct I/O messages CB Disagreement Alarm RAS-A and RAS-B disagree on the open/closed state of a breaker CB Error Alarm 52b switches show both breakers open, but undercurrent function has not operated 33

34 LUGO-VIC RAS PROTECTION ENGINEERING At each Generating Station One Trip output contact for each circuit breaker to be tripped One Trip indication output contact Mitigate for failed tripping breaker At each Breaker failure protection is initiated from RAS operation One Breaker Failure Initiation output contact for each circuit breaker tripped One set of latching output contacts to disable trips and insert a load resistor during Auto-Test Alarms Relay Failure Alarm Communications Channel Failure Alarm Direct Device Off-line Direct Ring Break Communications Channel Trouble Alarm Excessive CRC errors Excessive unreturned message errors 34

35 LUGO-VIC RAS PROTECTION ENGINEERING Relays Sequential Events Records Oscillography GPS clock synchronized Relay alarms Arming status Line-out status RAS Trip alarm 35

36 LUGO-VIC RAS PROTECTION ENGINEERING Commissioning Tests Wiring connections are being verified and tested Inputs and output contacts are being tested Logic functions are being tested Communications circuit is being verified and equipment trip tested Auto-Test is being executed at conclusion of commissioning tests 36

37 LUGO-VICTORVILLE RAS Power System Controls Obinna Obah 37

38 Objectives: LUGO-VICTORVILLE RAS Existing Lugo-Victorville RAS (LVRAS) Automatic Arming Program (AAP) will be modified to add one new participating generator: Sunshine Valley Solar (SVS) 100 MW The automatic arming program will calculate the arming requirement and optimally arm the appropriate amount of generation to be tripped to keep loading on Lugo-Victorville line within limit. Reliability: The automatic arming program runs in the SCE s Energy Management System (EMS), which is a redundant mission-critical system. 38

39 LUGO-VICTORVILLE RAS AAP Operational Features: LVRAS automatic arming program uses result from EMS Realtime Contingency Analysis (RTCA) application as input to determine appropriate amount of generation to be armed once every 5 minutes. If RTCA becomes unavailable or fails more than a preset time period, the automatic arming program will switch to using offline arming equation from Power flow studies performed by the Electric System Planning (ESP) unit to determine arming requirement. California Independent System Operator (CAISO) will be notified via ICCP of the Total MW of Generation armed for the LVRAS. 39

40 LUGO-VICTORVILLE RAS Remote/Local Manual Arming: In the event Automatic Arming Program is unavailable, the Lugo- Victorville RAS can be manually armed by one of the following two (2) methods: Remotely via Supervisory Control from the EMS by the System Operator at Eldorado Switching Center. Locally via pushbuttons on the front panels of RAS relays at the Eldorado Substation. 40

41 LUGO-VICTORVILLE RAS 41

42 Lugo Victorville RAS Telecommunications Larry Wang 42

43 LUGO VICTORVILLE RAS Telecommunication Element FOLLOWING SLIDES: 1. Overview for RAS A and RAS B Circuits 2. Details for RAS Circuits 3. VEA Network 4. Equipment Redundancy and Reliability 5. System Monitoring and Problem Resolution 43

44 Lugo Victorville RAS Overview w/ Sunshine Valley Solar LEGEND Sunshine Valley Solar Leased Circuit OPGW Microwave Fiber MW Repeater site RAS Circuit location 24 mi 0.5 mi Valley Desert View 57 mi Sawtooth Robs Peak 34 mi 65 mi B (LADWP) Turquoise NVE Northwest Pahrump 35 miles Desert State Line A B IVANPAH 74 mi PRIMM 12 mi Lower Potosi Silver State South 5 miles NIPTON CS Beer Bottle B Bob 25 miles B ELDORADO Opal Christmas Tree Black Metal Big Maria Red Mtn McCollough SDG&E Merchant Copper Mtn 4 Copper Mtn 2 Fiber Optic Node Lane Mtn Blythe DO Colorado River A Red Bluff Quartzite Cal Cap Victor Sub Mira Loma Vista Sub Mirage LUGO 44

45 Eldorado CB Lugo Victorville RAS Circuit System Block Diagram Eldorado DSL JMUX Comm Room 01/XR--/065179/SCE/ 103/T1/ELDO5090/IVAN8363 & 103/T1/IVAN0004/IVAN8363 A 01/XR--/065179/SCE/ JMUX T A 01/XR--/065180/SCE/ Eldorado CB B T /T1/IVAN8363DO1/ELDO Ivanpah DACS 101/T1/IVAN0004/IVAN8363D01 DSL CB B T /XR--/065180/SCE/ 01/SC--/064247/SCE/ 01/XR--/065181/SCE/ Eldorado 220/500 MEER JMUX A 101/T1/ELDO /PRIM8372 & 103/T1/PRIM0001/PRIM8372 SSS JMUX A T /XR--/065181/SCE/ 01/XR--/065182/SCE/ 01/XR--/065427/SCE/ 01/SC--/065429/SCE/ B T /T1/ELDO /PRIM8372D01 Primm DACS 101/T1/PRIM0001/PRIM8372D01 SSS CB B T /XR--/065182/SCE/ 01/SC--/064438/SCE/ 01/XR--/065426/SCE/ 01/SC--/065428/SCE/ Eldorado CB A T Eldorado DACS /T1---P/ELDO5090D01/LUGO5061D01 Lugo DACS 122 Lugo CB A T /XR--/065426/SCE/ 01/SC--/064438/SCE/ 01/SC--/064247/SCE/ 101 Vista DACS 104 Mira Loma DACS Mira Loma CB A T /SC--/065428/SCE/ 102 Eldorado DACS /T1 /ELDO5090D02/LUGO5061 Lugo CB B T /XR--/065427/SCE/ 102 Mira Loma DACS Mira Loma CB B T /SC--/065429/SCE/ 01/SC--/065196/SCE/ 01/SC--/065199/SCE/ 01/XR--/065194/SCE/ Eldorado JMUX A T /T1 /BOUL0002 /ELDO CM2 JMUX A T /XR--/065194/SCE/ 01/XR--/065195/SCE/ Eldorado CB B T /T1 /BOUL0002 /ELDO CM2 CB B T /XR--/065195/SCE/ 01/SC--/065196/SCE/ 01/XR--/065197/SCE/ Eldorado JMUX A T /T1 /BOUL0004 /ELDO CM4 JMUX A T /XR--/065197/SCE/ 01/XR--/065198/SCE/ Eldorado CB B T /T1 /BOUL0004 /ELDO CM4 CB B T /XR--/065198/SCE/ 01/SC--/065199/SCE/ 01/XR--/071140/SCE/ Eldorado CB A T /T1 /BOUL0007 /ELDO Bob SW 101 /T1 /AMAR0001 /BOUL0007 Sunshine Valley Solar ICON A 01/XR--/071140/SCE/ 01/XR--/071141/SCE/ Eldorado CB B T /T1 /BOUL0007 /ELDO Bob SW 102 /T1 /AMAR0001 /BOUL0007 Sunshine Valley Solar ICON B 01/XR--/071141/SCE/ A Route B Route RTU with no diversity requirements 45

46 LUGO VICTORVILLE RAS A & B PATH B Quartzite Lane Turquoise Lower Potosi Red Mtn McCollough Fiber Optic Cable Lugo SCE Microwave Path Eldorado Eldorado 500/220kV LADWP Microwave Path Big Maria/ Christmas Mira Loma Vista Blythe DO Opal Black Metal Tree A DSL DSL Ivanpah A Eldorado Ivanpah Nipton CS B Eldorado 500/220kV Primm Eldorado 500/220kV Primm Beer Bottle CS Red Mtn CS Eldorado Eldorado 500/220kV SSS SSS A CM2 OPGW ADSS Merchant OPGW UG Eldorado Comm Room ELD-017-SM ELD-018-SM Eldorado 500/220kV B CM2 OPGW ADSS Merchant OPGW UG Eldorado Comm Room ELD-017-SM ELD-018-SM Eldorado 500/220kV A CM4 OPGW ADSS Merchant OPGW UG Eldorado Comm Room ELD-017-SM ELD-018-SM Eldorado 500/220kV B CM4 OPGW ADSS Merchant OPGW UG Eldorado Comm Room ELD-017-SM ELD-018-SM Eldorado 500/220kV A Bob Sw/ OPGW SVS Rob s ADSS OPGW ADSS Eldorado Valley Sawtooth Pahrump Sloan Peak 500/220kV Canyon B SVS UG Valley ADSS/OPGW Desert View OPGW NW LEASED OC-3 CKT Bob Sw/ Sloan Canyon UG Eldorado 500/220kV 46

47 RAS CIRCUIT INTERFACE VEA SCE LW/CH RAS-A (ICON) 101 /T1 /AMAR0001 /BOUL0007 VEA NETWORK FOR RAS-A PATH LW/CH (ICON) 101 /T1 /BOUL0007/ELDO / LW TRAN (DMXTEND) LW TRANSPORT (DMXTEND) 01/XR--/071138/ /SCE / T1 Connection CH EQPT RAS-A (ZHONE800) 01/XR--/071140/ /SCE / 01/XR--/071138/ /SCE / 01/XR--/071140/ /SCE / Sunshine Valley Solar Gen Bob Sw (Sloan Canyon) Eldorado Sub (AMAR0001) (BOUL0007) (ELDO ) LW/CH RAS-B (ICON) 102 /T1 /AMAR0001 /BOUL0007 VEA NETWORK FOR RAS-B PATH LW/CH (ICON) 102 /T1 /BOUL0007/ELDO / LW TRAN (DMXTEND) LW TRANSPORT (DMXTEND) 01/XR--/071139/ /SCE / 01/XR--/071141/ /SCE / T1 Connection CH EQPT RAS-A (ZHONE800) 01/XR--/071139/ /SCE / 01/XR--/071141/ /SCE / 01/XR--/071138/ /SCE / 01/XR--/071140/ /SCE / ELDORADO TO SUNSHINE VLY SOLAR IVANPAH AREA RAS A ELDORADO TO SUNSHINE VLY SOLAR LUGO-VICT RAS A 01/XR--/071139/ /SCE / 01/XR--/071141/ /SCE / ELDORADO TO SUNSHINE VLY SOLAR IVANPAH AREA RAS B ELDORADO TO SUNSHINE VLY SOLAR LUGO-VICT RAS B 47

48 VEA Network 48

49 VEA Network 49

50 VEA Network 50

51 Equipment Redundancy SCE Network TABLE: IVANPAH AREA RAS Equipment Redundancy Equipment Description Manufacture Model Redundancy Channel Bank Zhone IMACS 800 CPU, Power Supply, T1 Module OHSU IEEE C Channel Unit Zhone None DACS Sycamore DNX 11 All Critical Electronics 1:1 SONET Alcatel Lucent DMX Access Multiplexer 1:1 SONET Alcatel Lucent DMXtend Access Multiplexer 1:1 SONET Alcatel Lucent 1850 Transport Service Switch (TSS1:1 SONET General Electric JungleMUX (OC 12) Optical, Power Supplies, DS1 & VT modules Microwave Radio Alcatel MDR 8000 Hot Standby, transmitters and receivers M13 Multiplexer TelCo Systems EdgeLink 100 1:1 T1 Channel Service Unit Kentrox T-SMART None VEA Network TABLE: VEA Telecom Equipment Redundancy Equipment Description Manufacturer Model Redundancy SONET SEL SEL ICON Power Supply, Optical Line module NX64 C37.94 MM SEL None Microwave Radio Nokia MPR9500 Hot Standby TX/RX, DS-1 Tributary, Power Supply 51

52 System Monitoring and Problem Resolution SCE Network SONET employs element management systems All sites have point alarms for equipment & environmental alarms Telecom Control Center (TCC) monitors 24/7/365, using Spectrum TCC responsible for coordination and dispatch of repair personnel Comm. Techs based throughout service territory; spare parts stored at several key locations Priority 1 problems have 2 hour response time, and 4 hour repair time VEA Network: Dispatch Center monitor electrical grid status and conditions throughout VEA s service territory on a 24x7 basis Dispatch personnel are responsible for problem analysis and dispatch of VEA Telecommunications technicians and outside plant forces to resolve problems in the event of a communications system alarm condition 52

53 Questions 53

54 SCE is requesting approval of Modifications to Lugo-Victorville RAS to add the following project: Sunshine Valley Solar 100 MW 54

55 Thank You! 55

56 Backup Slides 56