EPSCoR Project Research Components and Budget Overview

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2 EPSCR Prject Research Cmpnents and Budget Overview University f Alaska Task 1: Develpment f Statewide Wind Energy Database G. Fay UAA ISER (lead) K. Keith UAF ACEP J. Jensen Alaska Energy Authrity Task 2: Technical Issues Assciated with High Penetratin ti f Wind G. Hldmann UAF ACEP (lead) R. Wies UAF INE R Petersn UAF INE B. Muhand UAF ACEP Task 3: Cld Climate Operatin M. Cullin UAA SOE (lead) K. Keith UAF ACEP Jey Yang UAA SOE Task 4: Scial, Ecnmic, and Plitical Challenges G. Fay UAA ISER (lead) M. Berman UAA SER S. Clt UAA ISER State Agencies and Outreach Alaska Energy Authrity Renewable Energy Alaska Prject UAF Cperative Ext. Services Rural Campuses Utility Partners TDX Pwer Ktzebue Electric Ass. Kdiak Electric Ass. Alaska Village Electric Cp, Etc. Industry Partners Nrthern Pwer Systems Sustainable Autmatin PwerCrp Prudent Energy HOMER Energy, Etc. Wrld Class Labratries NREL SNL Other Labs Other Universities Task Funding in Match (thrugh Additinal cmpetitively EPSCR Budget AEA/DOE) awarded cmplementary funds Task I $300,000 N/A $75,000 Task II $1,179, N/A ~$833,000 Task III $200,000 ~$300,000 N/A Task IV $434,829 N/A N/A Prject Management $583,656 ~$110,000 $60,000

3 1. Overview f Task II The Task: Address technical issues assciated with high penetratin f wind. Research Cmpnents: 1. Develp transfrmative and efficient energy technlgies t address high wind penetratin challenges in Alaska: a) Operatin in diesel ff mde, b) Advanced energy strage 2. Wind pwer fr space heating and transprtatin applicatins (smart grid applicatins, hybrid/electric transprtatin) 3. Advanced mdeling wind analysis, design, and integrated mdeling by an bjective third party.

4 1.1 High Wind Penetratin in AK Islated cmmunities utilizing cmmercial wind diesel hybrid systems in Alaska New State Energy Plan released in January 2009 shws strng wind ptential in 116 cmmunities (

5 1.2 Challenges t HP Systems Deplyment in AK Technical Lack f dispatchable lad and cntrllers t allw higherpenetratin systems Lack f an established technlgy track recrd High and undcumented installatin and peratin expenses Limited capacity f the grid Plicy High capital cst and general discunting f sustainability Perceived risk and assciated higher financial csts Limited funding t supprt the develpment f diesel alternative systems Institutinal Lack f trained persnnel and the ability t keep trained persnnel in cmmunities Envirnmental, siting, r ther develpment cncerns.

6 1.3 Technical Slutins t High Penetratin Challenges 1. Innvative technlgies fr grid frming g Pwer electrnic cnverters and ther devices t enhance participatin f the systems in vltage management and frequency cntrl Additinal reactive pwer cntrl and fault ride thrugh capability, etc 2. Advanced d energy strage Batteries prvide tw specific advantages: a) Frequency stabilizatin (ms t secnds) b) Lad shifting (minutes t hurs) 3. Diesel ff mde peratin

7 2. Implementatin f Task II.1 Apprach: 1. Installatin f a test bed t assess ptins fr wind diesel diesel hybrid pwer systems in Alaska t perate in a diesel ff mde by testing state f art pwer electrnics devices. 2. Design cntrl strategies, and identify suitable pwer electrnic cmpnents and advanced strage technlgies fr wind diesel systems in AK.

8 2.1 Test Bed fr Diesel ff Mde Operatin Test Bed Equipment 1. Wind Turbine Simulatr, 100 kw, inductin generatr, 3 phase 480 VAC 2. Lead Acid Battery Bank, 336 VDC, 896 Ah nminal capacity 3. Grid Frming Pwer Cnverter, 200 kva, 480 VAC, 60 Hz 4. Transfrmer, Islatin, 225 kva, 480/277 V.

9 Test Bed (cnt d)

10 Diesel ff Mde Operatin (cnt d) Cnverter cntrl algrithms are designed fr peratin under the fllwing cnditins: Diesel OFFstate ndiesel gensets nline, the cnverter has t establish the grid frequency; the vltage regulatr n the cnverter cntrls the field current s as t maintain the desired AC bus vltage. Diesel ON state inverter perates in parallelwith diesel gen sets andthe WT. The energy prduced frm the WTs acts as a negative lad, the diesel gen sets fllw the lad, and any excess pwer is used t charge btt batteries, if present, r is dissipated by the dump lad.

11 2.2 Energy Strage Optins by Time Scale and Cmplexity Viable technlgies fr Alaska:

12 Flw Battery Strage +ve Electrlyte: Vanadyl/vanadium sulphate ve Electrlyte: Hypvanadus V II /Vanadus V III Sulphate Electrlyte perating temp. range: 10 t 35 degc Allwable strage temp. range: 25 t 75 degc

13 3. Recap Diesel ff Mde Analysis: Shrt term Analysis: Grid frming: Over vltage, under vltage, ver frequency, underfrequency, trip tests, harmnics, DC current injectin, unintentinal islanding, synchrnizatin Real and reactive lad sharing Lng term research will be defined based n additinal equipment, persnnel, funding: Grid simulatin, Lw lad peratin, secndary lad management and priritizatin, etc. Cntrlled battery charging/discharging g/ g g Emissin issues, etc Advanced Strage Analysis: Battery perfrmance testing invlves characterizatin in relatin t manufacturer s specificatins. Aim is t verify suitability fr AK climate Cycle life Discharge rate Duty cycle Envirnmental cnditins (temp., pressure, vibratin, etc) Battery qualificatin will be based n 1. Adptin and field trials 2. Reductin in cst f energy Satndby lsses (if any) Capacity Accelerated life and strage analysis

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