Large Scale System Monitoring of Regenesys & NAS Battery Systems TM

John D. BoyesSandia National Laboratories

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Agenda

TVA Regenesys Flow BatteryDemonstration

TVA Regenesys Flow BatteryDemonstration

Description

• 120 MWh Regenesys electrical energy storage system

• Peak Shaving – 12 MW for 10 hours

• Reliability – will maintain 24 MWh capacity to support 6MW critical load for 4 hours

• TVA power plant, in Columbus, MS

TVA Regenesys Flow BatteryDemonstration

Objective

• Reduce need to add power lines

• Less environmental impact than new power plant

• Improve system reliability and PQ

TVA Regenesys Flow BatteryDemonstration

• Developed for large scale utility applications

• Large storage capacity

• Inexpensive electrolyte materials

• Well-developed production system

• Supports goals of National Energy Policy

TVA Regenesys Flow BatteryDemonstration

Monitoring Objectives

• Manage the Data Collection

• Conduct the Data Analysis

• Conduct the Economic Analysis

• Dissemination of Data

TVA Regenesys Flow BatteryDemonstration

Modes of Testing

• UPS

• Load Sharing

• Peak Shaving

• Arbitrage

• Power Conditioning (Customer Point)

• Ancillary Power (Grid Support)

TVA Regenesys Flow BatteryDemonstration

Status• Signed Non-Disclosure Agreement (NDA)

• An MOU between SNL and TVA, signed in August.

• Federal Agency Order (FAO) to TVA issued in September

• Electrotek selected to perform analysis

• Joe Hoagland is TVA’s technical contact

TVA Regenesys Flow BatteryDemonstration

TVA Regenesys Flow BatteryDemonstration

AEP NAS Battery DemonstrationTM

PartnersAEP EmTech, LLC.Tokyo Electric Power Co.NGK Insulators Ltd.ABB Inc.DOE/ Sandia National LaboratoriesEPRI

Data Analysis of the AEP NAS Battery Demonstration

TM

TM

AEP NAS Battery Demonstration TM

Description

• 2 NGK Insulators Ltd., NASTM battery modules

• Integrated With PCS for PQ/PS Device

• 300 kW of PQ protection for 30 seconds

• 100 kW of peak shaving capacity for 7 hours

• AEP site, in Gahanna OH.

AEP NAS Battery DemonstrationTM

Objective

• Evaluate System Performance Over 2 Years

• Validate Operating Characteristics in U.S. Application

• Gain Familiarity & Experience of NAS Technology

• Develop Economic Models for Value-Added Applications

AEP NAS Battery DemonstrationTM

• Large capacity

• Compactness

• High efficiency

• Long-term durability

• Preservation of the environment

Data Analysis of the AEP NAS Battery Demonstration

TM

Monitoring Objectives

• Data Collection

• Conduct the Data Analysis

• Conduct the Economic Analysis

• Dissemination of Data

NAS PCS Monitoring PointsNAS PCS Monitoring Points13.8kV 480V

Controlcircuit

Heaters

NaS Battery

kWkWhVdcIdcAht

kWkWhVsIst

AC

DC

kWkWh

t

kWkWh

VblocksIdcAht

PQ(when)

PQmonitoring

kWkWhVoIo

KV/2meter

KV/2meter

kWkWhVinIin

kWkWhVdcIdc

VblocksT

Aht

From NGK

8

2

4

31

5

7

6

kWkWhVblIbl

C1

C3

C2

AEPLoadBank

9IR

M

StaticSwitch

480V 208V BuildingLoad

MIS (SW)BIB (CB)

CB-MBP (N.O.)

PCC

480/200KV/2meter

TM

Data Analysis of the AEP NAS Battery Demonstration

TM

Status• NDA

• MOU signed on Sept. 20, 2002

• AEP technical contacts - Dave Nichols & Harold Lampke

• NAS Information Center Established

• http://www.aeptechcentral.com/

Basic NAS Energy Storage Module TM

AEP NAS Battery DemonstrationTM

TVA Regenesys Flow BatteryDemonstration - Data Collection

• Wh (AC and DC) lifetime accumulation• State-of-Charge• Station and System power• DC Current• Thermal Loading• Duty cycle count• Power factor monitoring• Electrolyte management system loading• Water usage• Charge/Discharge rates

TVA Regenesys Flow BatteryDemonstration

AEP NAS Battery DemonstrationTM

• Factory Acceptance Tests Performed• Used 500 kW Resistive Load-bank• Battery Charging Mode• PS Mode• PQ Mode• PQ Mode During Battery Charging• PQ Mode During Peak Shaving• PQ Mode During Standby After PS Discharge• PQ Mode During Standby After Charge• Motor Start/Overload

Data Analysis of the AEP NAS Battery Demonstration

Electrical Integration With Building LoadElectrical Integration With Building Load

TM

NAS BATTERY/PCS SYSTEM INSTRUMENTATION SETUPSeptember 16 - 20, 2002

Bldg.

CB BIB

CB MBP

CB 2CB 1 SS 1

I PCSAPh A

T A1 I PCSBPh A

T B1

BAT A1 BAT B1

SW MIS

Bldg.

Bldg.

Bldg.

750 kVA

RevPwrXdcr

300 kVA

CB 3

V1/1

INV A1 INV B1

V1/1

800/1 (ABB)

10/1 (Pearson)

I source

80/1 (Metering)10/1 (Pearson)

1000/1 (Fluke)1000/1 (Fluke)

KV2

V

500/1 (Tek Probe)500/1 (Tek Probe)

V

KV2

I Load

100/1(LEM System)

100/1(LEM System)

V source

V battery A

I battery A

V battery B

I battery B

V Load

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