AESO Considerations and Experiences with Development of Wind Facility Interconnection

Transcription

1 AESO Considerations and Experiences with Development of Wind Facility Interconnection John H. Kehler, Senior Technical Specialist BC Focused Wind Workshop January 25-26, 2005

2 Topics Background on Alberta and AESO Considerations for Wind Interconnection Existing and Future Development Modeling and representation of wind facilities Technical requirement development for Reliability and System Operations Standard Development and Continued Work Experiences Voltage Regulation, Power Quality, Operations

3 Background Alberta Existing Generation Capacity Generating Capacity (MW) 8% 2% 1% Coal 5,999 Gas 4,738 Hydro 917 Wind 279 Biomass 153 Fuel Oil 8 Total 12,094 Interconnections: British Columbia Saskatchewan % 50%

4 Industry Structure (June 2003) Electric Utilities Act Minister of Energy Appoints Board members, MSA & EUB Chair Balancing Pool Wholesale Energy Market Alberta Electric System Operator Load Settlement Alberta Energy & Utilities Board (EUB) Regulates AESO s Transmission business Market Surveillance Administrator (MSA) Transmission DFO s Real-time Alberta Electric System Operator TFO s

5 Concerns with Integration of Wind Power Wind Power Industry concerns Voltage Behavior Low voltage tripping Voltage Regulation Operations impact as a result of wind power variability Previous AESO standard inadequate for wind development No requirements for low voltage ride through capability No ability to manage power from facility

6 To Natal B -1S C o lem a n 79 9S Lu nd b re ck 51 3S Cowley Ridge S 4 1 M W L C a stle R iver S 4 0 M W Shell W aterton 37 9S Shell Waterton S 53 F t. M a c le o d Oldman Hydro 3 2 M W P in ch e r C re e k S Y a rrow 99 5 S D ryw o od S N 17 0L To Janet 7 4 S P e ig a n 5 9 S S ta vely S 5 5 G le n w o o d To Blackie 25 3S G le n w o o d S E. S ta ve ly 92 8 S F t. M a cle o d 1 5 S L S p ring C o u lee 38 5S L Le th b ridg e S S R iverb e n d S Taylor Chute 13 M W To Milo Junctio n N. Le thb rid g e S M ag ra th S S S L a ke vie w S T e m p e st S R a ym o n d 2 1 M W C o a lda le S Chin Chute 1 1 M W S tirlin g 6 7 S 185L 164L 863L 66L 180L 911L T o C ra n b ro ok L T o L a n gd o n 10 2S S u m m e rvie w 131 MW (Total) Kettles Hill 6 3 M W W a te rto n M W L/1 62 L L M a cleod F la ts 6 0 M W 17 0 L S o d e rgle n 71 M W McBride Lake 7 5 M W M ag ra th 3 0 M W 22 5 L 92 4L L 1201L L L T a y lor 3.4 M W Irric an H y dro 7 M W L W a rne r S To Taber 25 4S Southwest Alberta Existing wind generation 279 MW Proposed wind generation 560 MW Monarch 492S 725AL 820L 6 9 k V kv 2 40 kv kv Planned Custom er Interconnection P lan ts E x is tin g F u tu re H ydro W in d P ro po s ed Lin e

7 Southeast Alberta Proposed wind generation 200 MW To Oyen 767S To Langdon 102S Brooks To Queens Town 504S 935L 923L Enchant 447S Bassano 431S 853L W. Brooks 28S 763AL To Anderson 801S 763L Ware Junction 132S 814L 827L Duchess 339S Cutting Lake 227S Brooks 121S 795L 951L 944L Tilley 498S 100L Wardlow 223S Jenner 275S N Empress Suffield 895S 100L 945L Empress Liquids 164S Sandy Point 204S Empress 394S 760AL 869L 760L 163S 830L 9LS1M Sask Power McNeill Interconnection Convertor Station 840S Sand Hills 341S 760L 871L 7L760/760L Amoco Empress Monarch 492S 725L Lethbridge 674S Riverbend 618S 924L 923L Coaldale 254S To Peigan 59S 172L To Ft. Macleod 820L 15S N. Lethbridge 370S 207L To Peigan 59S 111S 241S 146S 863L 725AL 734L 813L 823L Lakeview 593S 172L Lethbridge 824L Vauxhall 158S Taber 83S Chin Chute IPP 11MW Tempest 403S 66L To Stirling 67S 821L Fincastle 336S 172AL Conrad 135S Hays 421S Vauxhall Purple Springs 80MW Burdett 368S 722L Westfield 107S 172L Medicine Hat Bullshead 523S Seven Persons 120MW 172L Medicine Hat 41S To City of Medicine Hat Peace Butte 404S Chappice L. 649S To Magrath 225S 138 kv 240 kv 138 kv - New Capacitor banks Thermal Plant Future W ind Farm

8 Summary of AESO actions to address concerns New Standard Voltage Ride Through and Voltage Regulation requirements TFO must have ability to trip wind farm facility, in emergencies. Small wind farms exempt from certain requirements. Further Studies and Consultation Initiated wind power variability study with support provided by wind developers. Continue to consult with industry in the development of wind power technical requirements.

9 Intent of the Wind Power Facility Standard Treat wind farms similar to other generators, while recognizing differences in technologies. Interconnection requirements are not intended to exclude particular wind power technologies. Standards contribute to maintaining AIES reliability. New standards are not intended to be applied retroactively. Technical standards to be consistent with North American practices, under similar circumstances, and evolving standards. Stakeholder consultation throughout the initiative.

10 Considerations for Wind Interconnections Existing and Future Development

11 Forecast Wind Capacity as a Percentage of Total Alberta Generation 8% % % Alberta Calif. PJM New York ERCOT

12 Considerations for Wind Interconnections Modeling and Representation of Wind Facilities

13 Dynamic Models NEW MODEL OLD MODEL 15% Accurate models are required for dynamic studies LVRT at 15% did not mitigate multiple wind facility trips with the original model used in the studies.

14 Wind Facility Modeling Standard Development WTGs < 690v kv Transmission Voltage External Voltage Regulation / Reactive Power System WIND POWER FACILITY REPRESENTATION

15 Wind Facility Modeling Actual Facilities Depending on the nature of the study the AESO may use; single turbine representation Example: Network studies full detailed representation Example: Dynamic simulation for testing and validation

16 Considerations for Wind Interconnections Technical Requirement Development for Reliability and System Operations

17 AESO Voltage Ride Through standard is to; mitigate multiple wind facility tripping identified in studies, satisfy operating requirements, and specified at the transmission voltage of the wind facility. temporary consideration until Jan

18 AESO Voltage Regulation standard is to; accommodate unique differences and advanced technology for wind facilities. provide options to satisfy voltage and reactive power requirements. Installation at transmission voltage levels or within wind facility. Static, dynamic and overload capabilities. Facilities must be capable of voltage set-point adjustment of +/- 5% from rated.

19 AESO Power Management standard; Operational requirements of wind facilities will be determined following the variability study. Power management is optional at this time and will be assessed after the variability study. Permits self-control of Wind facilities. Ability to start, stop and change load without operator intervention. Coarse Control Remote trip only of a wind facility by a TFO during emergencies.

20 Wind Facility Monitoring Normal SCADA requirements plus wind speed and wind direction. Dynamic system monitoring equipment to record wind facility voltage, reactive power and real-power behavior to system disturbances Testing and Validation Voltage Regulation and Reactive Power capability

21 Experiences Voltage Regulation, Power Quality, Operations

22 Voltage Regulation The AESO requires testing and validation of the automatic voltage regulation controls. A Phasor Measurement Unit monitors the collector feeders into the low side of the system step-up transformer. Validation is performed with GE PSLF or PTI PSS/E.

23 Voltage Quality Wind facility measurement Alberta Voltage Flicker Curve Wind facility measurement well within compliance.

24 Total Wind Power During December 2004 Alberta Total Wind (Dec 2004) MW Time - 1 Day Per Division

25 Deviation in % of Capacity Dec MINUTE 30 MINUTE VARIABILITY- 10 MIN AVERAGES VARIABILITY- 30 MIN AVERAGES 20 VARIABILITY- MINUTE 20 AVERAGES 60 MINUTE VARIABILITY- 60MIN AVERAGES Where 1 = 100%

26 Questions? Web Site: John Kehler, ,

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