EPSCoR Project Research Components and Budget Overview University of - - PowerPoint PPT Presentation

EPSCoR Project

Research Components and Budget Overview

Task 4: Social, Economic, and Political Challenges Task 3: Cold Climate Operation M Cullin – UAA SOE (lead) Task 2: Technical Issues Associated ith Hi h P t ti f Wi d Task 1: Development of Statewide Wind Energy

University of Alaska

and Political Challenges

• G. Fay – UAA ISER (lead)
• M. Berman – UAA SER
• S. Colt – UAA ISER
• M. Cullin

UAA SOE (lead)

• K. Keith – UAF ACEP

Joey Yang – UAA SOE with High Penetration of Wind

• G. Holdmann – UAF ACEP (lead)
• R. Wies ‐ UAF INE

R Peterson‐‐ UAF INE

• B. Muhando – UAF ACEP

gy Database

• G. Fay – UAA ISER (lead)
• K. Keith – UAF ACEP
• J. Jensen ‐ Alaska Energy

Authority

Industry Partners

Northern Power Systems Sustainable Automation PowerCorp Prudent Energy HOMER Energy, Etc.

Utility Partners

TDX Power Kotzebue Electric Ass. Kodiak Electric Ass. Alaska Village Electric Coop, Etc.

State Agencies and Outreach

Alaska Energy Authority Renewable Energy Alaska Project UAF Cooperative Ext. Services Rural Campuses

World Class Laboratories

NREL SNL Other Labs Other Universities gy,

Task Funding in EPSCoR Budget Match (through AEA/DOE) Additional competitively awarded complementary funds Task I $300,000 N/A $75,000 Task II $1 179 690 N/A ~$833 000 Task II $1,179,690 N/A $833,000 Task III $200,000 ~$300,000 N/A Task IV $434,829 N/A N/A Project Management $583,656 ~$110,000 $60,000

• 1. Overview of Task II
• The Task:
• 1. Overview of Task II

Address technical issues associated with high penetration of wind.

• Research Components:

Research Components:

1. Develop transformative and efficient energy technologies to address high wind penetration challenges in Alaska: a) Operation in diesel‐off mode, b) Advanced energy storage 2. Wind power for space heating and transportation applications (smart grid applications, hybrid/electric transportation) 3. Advanced modeling ‐ wind analysis, design, and integrated d li b bj ti thi d t modeling by an objective third party.

1.1 High Wind Penetration in AK

Isolated communities utilizing commercial wind‐diesel hybrid systems in Alaska systems in Alaska

New State Energy Plan released in January 2009 shows strong wind potential in 116 communities (http://www.aidea.org/aea/)

1.2 Challenges to HP Systems Deployment in AK

Technical Policy

• High capital cost and general discounting of

sustainability

• Perceived risk and associated higher financial costs
• Lack of dispatchable load and

controllers to allow higher‐ penetration systems

• Perceived risk and associated higher financial costs
• Limited funding to support the development of

diesel alternative systems

p y

• Lack of an established technology

track record

• High and undocumented

Institutional g installation and operation expenses

• Limited capacity of the grid

Institutional

• Lack of trained personnel and the ability to keep trained

personnel in communities

• Environmental siting or other development concerns
• Environmental, siting, or other development concerns.

1.3 Technical Solutions to High Penetration Challenges

• 1. Innovative technologies for grid‐forming

g g g

• Power electronic converters and other devices to enhance

participation of the systems in voltage management and frequency control q y

• Additional reactive power control and fault‐ride‐through

capability, etc

2 Ad d

• 2. Advanced energy storage
• Batteries provide two specific advantages:

a) Frequency stabilization (ms to seconds) q y b) Load shifting (minutes to hours)

• 3. Diesel‐off mode operation

• 2. Implementation of Task II.1
• Approach:
• 2. Implementation of Task II.1
• 1. Installation of a test bed to assess options for

wind diesel hybrid power systems in Alaska to wind‐diesel hybrid power systems in Alaska to

• perate in a diesel‐off mode by testing state‐of‐art

power electronics devices. p 2. Design control strategies, and identify suitable power electronic components and advanced power electronic components and advanced storage technologies for wind‐diesel systems in AK.

2.1 Test Bed for Diesel‐off Mode Operation

• Test Bed Equipment
• 1. Wind Turbine Simulator, 100 kW, induction generator, 3‐phase 480 VAC
• 2. Lead‐Acid Battery Bank, 336 VDC, 896 Ah nominal capacity
• 3. Grid‐Forming Power Converter, 200 kVA, 480 VAC, 60 Hz

g , , ,

• 4. Transformer, Isolation, 225 kVA, 480/277 V.

Test Bed (cont’d)

Diesel‐off Mode Operation (cont’d)

Converter control algorithms are designed for operation under the following conditions:

Diesel OFF state no diesel gensets Diesel OFF state — no diesel gensets

• nline, the converter has to establish the

grid frequency; the voltage regulator on the converter controls the field current so as to maintain the desired AC bus voltage. Diesel‐ON state — inverter operates in parallel with diesel gen‐sets and the WT. parallel with diesel gen sets and the WT. The energy produced from the WTs acts as a negative load, the diesel gen‐sets follow the load, and any excess power is used to h b tt i if t i charge batteries, if present, or is dissipated by the dump load.

2.2 Energy Storage Options by Time Scale and Complexity

Viable technologies for Alaska:

Flow Battery Storage Testing @ACEP

+ve Electrolyte: Vanadyl/vanadium sulphate ‐ve Electrolyte: Hypovanadous VII/Vanadous VIII Sulphate Electrolyte operating temp. range: 10 to 35 degC Allowable storage temp. range: ‐25 to 75 degC

Advanced Storage Analysis:

• Battery performance testing
• 3. Recap

Diesel‐off Mode Analysis:

• Short term Analysis:

Battery performance testing involves characterization in relation to manufacturer’s

• specifications. Aim is to verify
• Grid‐forming: Over voltage, under

voltage, over frequency, under‐ frequency, trip tests, harmonics, DC current injection, unintentional

p y suitability for AK climate

• Cycle life
• Discharge rate

islanding, synchronization

• Real and reactive load sharing
• Long term research will be
• Duty cycle
• Environmental conditions (temp.,

pressure, vibration, etc)

defined based on additional equipment, personnel, funding:

• Grid simulation,
• Battery qualification will be based
• n
• Satndby losses (if any)
• Low load operation, secondary load

management and prioritization, etc.

• Controlled battery

charging/discharging

• Capacity
• Accelerated life and storage analysis
• 1. Adoption and field trials

g g/ g g

• Emission issues, etc
• 1. Adoption and field trials
• 2. Reduction in cost of energy