How Tucson Electric Power uses the PI System to balance Reliability and Variable Generation Presented by Stan Hollowell, Tucson Electric Power Carlos Arocho, Tucson Electric Power © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . Tucson Electric Power History • Founded in 1892, TEPC is the principal subsidiary of UNS Energy Corporation. – Serve over 400,000 customers in the Tucson metro area. – More than 2,200 megawatts of generating capacity – Approximately 1,100 miles of EHV (345 kV and 500 kV) lines and 8 EHV substations – Estimated variable energy 280 MW and counting… © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 2 The good….. the bad….. and the swag! • THE GOOD – Renewable energy and variable generation. • THE BAD - How much variable generation is installed and what is the impact to the system? • THE SWAG - Forecasting solar weather patterns?!?!?! © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 3 Weather © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 4 THE GOOD • Renewable energy and variable generation • Renewable Energy Standard and Tariff (REST), approved in 2008 by the Arizona Corporation Commission (ACC) requiring 15 percent of total power sales by 2025. • Estimated variable energy 280 MW © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 5 The GOOD - Solar PV Sites © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 6 The GOOD - Solar Sensors • Irradiance sensors deployed for forecasting. • TEP PV generation sites providing EMS data. • PV system used in hindcasting study. © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 7 The BAD – Safety and Reliability impact • How much variable generation is installed and what is the impact to the system? – Type of variable energy • Solar • Wind – Type of construction of technology • Dual Axis • Single Axis • Fixed – Communication method • Real-time • Monthly © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 8 The BAD – Safety and Reliability impact • Continued – Type of solar technology • Double axis • Single axis • Fixed or rooftop – Solar • Utility Scale – EMS, real time telemetry and MDM validated • Commercial – EMS estimated and MDM validated • Residential - EMS estimated and MDM validated © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 9 Ramp Rates • Observed Ramp Rates: – From a 34 MW system we see 20 MW / 120 sec – From a 1.6 MW system we see 1.2 MW / 8 sec – From a 2 kW system we see 1.6 kW / 5 sec © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 10 Solar Data TEP Solar Displayed Using Single Scale 30 ANALOG:UA_TECH.UT4_EONM1MW 4.700 MW ANALOG:UA_TECH.UT_AEYM1MW 4.104 MW ANALOG:UA_TECH.UT_AMXMW 0.88115 25 ANALOG:UA_TECH.UT_SOL1M1MW 1.887 MW ANALOG:UA_TECH.UT_SOLMW 1.0151 20 15 ANALOG:RENEWABLES.FRV_C861M1MW 9.500 MW ANALOG:RENEWABLES.NP_C928M1MW 26.349 MW ANALOG:RENEWABLES.SPF_SPF3M1MW 3.347 MW 10 5 0 -5 9/15/2013 1:56:42 PM 2.00 days 9/17/2013 1:56:42 PM © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 11 Solar Data TEP Solar Displayed Using Multiple Scale 6 5 1.2 3 1.4 20 30 4.5 ANALOG:UA_TECH.UT4_EONM1MW 4.700 MW ANALOG:UA_TECH.UT_AEYM1MW 4.100 MW ANALOG:UA_TECH.UT_AMXMW 0.8918 5 ANALOG:UA_TECH.UT_SOL1M1MW 1.994 MW ANALOG:UA_TECH.UT_SOLMW 1.0597 4 ANALOG:RENEWABLES.FRV_C861M1MW 9.500 MW ANALOG:RENEWABLES.NP_C928M1MW 26.305 MW ANALOG:RENEWABLES.SPF_SPF3M1MW 3.400 MW 3 2 1 0 0 -0.2 9/15/2013 1:59:32 PM 0 -0.2 0 -5 0 2.00 days 9/17/2013 1:59:32 PM © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 12 The SWAG?!?!?! • Forecasting solar weather patterns?!?!?! – How does PV generation compare to total load? – How does geographic diversity smooth aggregate ramp rates? – Can we use PV data to forecast output? © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 13 PC at TEP solar test yard U of A Architecture LabView program Physical sensors GSM Modem sensors Utility EMS DG Meters Utility MDM Primary SQL db Re-binned SQL db DG inverters Data from installers SQL update scripts SSH, SFTP Email, terminals UAPV server at UA Computers at UA Atmo. NWS data WRF UAPV server at UA model Local SQL db Web GUI Web GUI UA REN web designers SQL copy U Improved Web GUI © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 14 Tools used to create data file - PI OLEDB data access method - VBScript program code to make calls to PI archive and create data file - Perl used to substitute meter names in data file to ID #’s - VisualCron excellent scheduler, run tasks and ftp the file © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 15 TEP PI System Data and U of A forecast © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 16 TEP PI System Data and U of A forecast © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 17 PI Notifications © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 18 PI Notifications From: [email protected] [mailto:[email protected]] Sent: Friday, August 30, 2013 9:00 AM To: Arocho, Carlos Subject: EMS METERS\Station: Renewables\Notifications[FRV Accumulator Alert] generated a new notification event. Name: FRV Accumulator Alert Database: TEPPIUDS Trigger Time: 08/30/2013 09:00:16 Target: EMS METERS\Station: Renewables State: OutsideControl Value: 63834.91 Priority: Normal Actions: Acknowledge Acknowledge With Comment © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 19 PI System Expansion PI Systems for UNS Generation 6/25/2013 Springerville Gen Station HW Sundt Gen Station Solid lines: Currently exists Units 1-4 Data SGS Data Fir ew all SGS PI Server Units 1, 2, 4 Data Corporate Network DCS DCS Data Corp PI Server 2 Corp PI Server 1 SGS Operator Rounds Data all ew Fir DCS EtaPRO Calculations PI Manual Logger PI Manual Logger Firewall Docked Or WiFi EMS Network ICT Data Docked Or WiFi Sundt Operator Rounds Data EMS PI Servers Firewall Irvington EMS Servers EMS Core ICT’s ICT’s Vail EMS Servers North Loop (4 ICTs) U of A Variable Generation Data Valencia Sundt (2 ICTs) Black Mountain DeMoss Substations and Variable Gen. © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 20 Summary • Benefits of PI System – – – – – – Innovative Product Line Data Consolidation Diversity of Data Exchange Flexible Reporting Application Development Excellent Technical Support © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 21 Questions? © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 22 Stan Hollowell [email protected] EMS Supervisor Tucson Electric Power Carlos Arocho [email protected] EMS Engineer Tucson Electric Power © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C . 23 Brought to you by © C o p yr i g h t 2 0 1 3 O S Is o f t , L L C .