ELECTRICAL UTILITY COST REDUCTION THROUGH PREDICTIVE CONTROL BACKGROUND

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1 ELECTRICAL UTILITY COST REDUCTION THROUGH PREDICTIVE CONTROL Project Manager: Chris Hayes BACKGROUND Kraft Foods 35 Reduction of Energy Costs Over The Next 5 Yrs. (5 Benchmark) Kraft Foods Financial Model (Utility Standard) Explained Compressed Air Project (Estimated $54,000 Annual Savings) T-8 Lighting Project (Estimated $76,000 Annual Savings) Indiana Michigan Power and The Industrial Tariff 322 Charges On-Peak / Off-Peak Demand Charges Energy Charge and Power Factor Correction Fuel Adjustment Charge / Tariff Service Charge Net Savings Merger Rider

2 Utility Bill Calculations Demand Charge = $ * Peak Power (KVA) + Energy Charge = $ * Kwh * pfconstant + Fuel adjustment charge + Tariff Charge - Net Savings Rider Total Monthly Billed Amount Where pfconstant = (.1275*(KVARhrs/KWhrs)^2) (the power factor constant) Practical Example of the Effects of Peak Power KVA Peaks From March 11th to March 17th, Measured in Minute intervals Max of KVA DATE HOUR SPIKE

3 7 ELECTRICAL CHARGES METERED DEMAND PF DEMAND ENERGY FUEL MONTHLY MERGER BILL 7 KWH KVA CONSTANT CHARGE CHARGE ADJUSTMENT TARIFF SAVINGS ACTUAL JAN $48, $,8.42 $2, $ $ $66,6.63 FEB $55, $18, $3, $ $ $76, MAR $66, $20, $3, $ $ $89, APR $65, $17, $3, $ $ $85, MAY $65, $20, $3, $ $ $89, JUN $68,6.59 $21, $3, $ $ $92, JUL $72, $24,6.44 $9, $ $1, $105,9.39 AUG $75, $28,428. $11, $ $1, $114, SEP $72, $24, $9,446. $ $1, $104, OCT N/A N/A $8, $ $1, $105,290. NOV N/A N/A $7, $ $1, $95, Peak Power Charges Contribute to approximately 70 of The Total Bill Fuel Costs Have Risen Nearly Since Last Year (From $ Per KWH to $ Per KWH) I & M Power is in The Process of Negotiating a 9 to 12 Rate Increase Through The Indiana Utility Commission. RECOMMENDATIONS Solution Broken Down Into two Stages Stage 1 o Monitor the Energy Usage and Peak Power on Each of The Three Main Substation Switchgear, o Analyze the Data o Determine The Source of The Highest Peaks (Guilty Party). Stage 2 o Using Stage 1 Data, Install Addition Metering Equipment on Those Identified Devices In Order To verify and Control The Peak Values. o Analyze the Peak Trending Pattern o Develop A Hypothesis To Limit Peak Power Exposure. o Test and Verify Results

4 RECOMMENDATIONS STAGE 1 The Use of Idled Existing Equipment Spit Core Current Transformers Current Transformers, 00/5 current Ratio, 1 Accuracy, Installed 1 Per Phase. Watt/VAR Transducer,0-5A Current Input, Watt & VAR 0-1mA Output. Signal Converter, Relay Output, 0-1mA Input, 0 to 10,000 Proportional Closure Rate. Metermate Power Monitor, 120VAC, 8 Meter Inputs Derived From Isolated Pulse Contacts, Max Operating Rate of 10 Pulses Per Second Per Input, Asynchronous Serial Transmission RS232C Compatible 0,,, 4, 9 Baud Data Analysis Statistical Process Control Historical Trends MES/OEE Line Usage Historical Data Guilty Party Identification BLOCK DIAGRAM

5 RECOMENDATIONS STAGE 2 Install Additional Equipment on Assumed Guilty Party Devices Utilize Upgraded Technology Into Design Veris H8035, H8036 power Meters Single Package Industrial Grade CTs / Power Metering Electronics Split Core Installation RS 485 Communications (Modbus) Tie in PLC Processor (SLC ) Programming Concerns If-Then Structured programming, Inputted information Received Form Metering Equipment Compared to Information Gathered From Historical MES/OEE Line Utilization and Peak Electrical Data. Hardware Concerns Identify Method of Tying In (Modbus to Ethernet Conversion) Number of production lines running /1/7 CORRELATION BETWEEN PRODUCTION LINE UTILIZATION AND PEAK KVA POWER Lines Running - Aug 7 7 Daily Max KVA Values - August 7 Daily Peak Power (KVA) /1/7 7

6 RECOMMENDATIONS STAGE 2 SLC FC Style Split Core CT Veris H8036 CT PC KW/VAR Transducer Metermate Signal Converter DECISION RATIONAL Milestone Schedule Project Completion Dec. 12 th, 8 AR Approval Stage 1 Equipment Procurement Stage 2 Equipment Installation Metermate Live Date Time Allotted For Metermate Programming Data Analysis Stage 2 Equipment Procurement Stage 2 Equipment Installation Programming Complete Preliminary Testing Top/Down Structure Control Revisions Complete Final Testing Project Completion Expenses Needed Anticipated Cost < $5M Veris Current Transformers (Quantity TBD) SLC I/O Modules, as Needed Wiring (Belden, 14AWC THNN Control)

7 ID Ta sk Name Duration Start Finish PROJECT MILESTONE SCHEDULE r, '08 May 4, '08 Jun 8, '08 Jul 13, '08 Aug 17, '08 Sep 21, '08 Oct 26, '08 No v, '08 W T F S S M T W T F S S M T W T F S 1 AR Approved 11 days? Fri 5/2/08 Fri 5/16/08 2 Stage 1 Equipment Received days? Mon 5/19/08 Fri 6/6/08 3 Stage 1 Equipment Installed 19 days? Mon 6/9/08 Thu 7/3/08 4 Metermate Live date 10 days? Mon 7/7/08 Fri 7/18/08 5 Data Analysis Complete 20 days? Mon 7/21/08 Fri 8//08 6 Stage 2 Equipment Received days? Mon 8/11/08 Fri 8/29/08 7 Stage 2 Equipment Installed 20 days? Mon 9/1/08 Fri 9/26/08 8 Programming Complete 10 days? Mon 9//08 Fri 9/26/08 9 Prelimenray Testing Complete days? Mon 9/29/08 Fri 10/17/08 10 Cotrl Revisions Complete 20 days? Mon 10/20/08 Fri 11/14/08 11 Final Testing days? Mon 11/17/08 Fri 12/5/08 12 Project Completion 5 days? Mon 12/8/08 Fri 12/12/08 FINANCIALS Ja n Feb Mar Sav. Red S aving s at 7 P ea k K V A Re duction $3, $3, $4, Savings at 10 Pea k KV A Re duction $4, $5, $6, A p r May Jun Sav. Red Savings at 7 P ea k K V A Re duction $4, $4, $ Savings at 10 Pea k KV A Re duction $6, $6, $2, Jul Aug Sep Sav. Red Savings at 7 P ea k K V A Re duction $8, $5, $6, Savings at 10 Pea k KV A Re duction $10, $7, $8, Oct Nov Dec Sav. Red Savings at 7 Peak KVA Reduction N/A N/A N/A N/A N/A N/A Savings at 10 Pea k KV A Re duction N/A N/A N/A N/A N/A N/A A 7 Reduction of Peak KVA, Yields a Savings of Approximately $56M or a 5.5 Reduction A 10 Reduction of Peak KVA Yields a Savings of Approximately $76M or a 7.4 Reduction

8 ISSUES/RISKS (1) I & M Rate Increase (2) Tight Control Of Expenses (3) Power Outages SEVERITY OF CONSEQUENCES IMPOSSIBLE IMPROBABLE REMOTE OCCASIONAL PROBABLE FREQUENT CATASTROPHIC CRITICAL 3 1 MARGINAL 2 NEGLIGABLE Power Coordination ALTERNATIVE PROJECT BENEFITS Comparing Buss Bar Load Values to That of Annual Study NFPA 70E Arc Flash Compliance OP Sizing Requirements Continuous Improvement Opportunities Monitoring All Utilities (Natural Gas, Waste Water) CTs at the MCC Line-Starter Level Predictive Maintenance Thermo graphic

9 References: [1] Randy Peters (private communication), 8. [2] Paul Lin, P.E. (private communication), 8. [3] Morlan & Associates, Inc Flex Core Div. Technical Staff, Metermate Instruction manual, Morlan & Associates, Inc Flex Core Div. [4] Morlan & Associates, Inc Flex Core Div. Technical Staff, Watt/VAR Transducer Model GWV5 Specifications, Morlan & Associates, Inc Flex Core Div. [5] Morlan & Associates, Inc Flex Core Div. Technical Staff, Signal Converter Model VFC Specifications, Morlan & Associates, Inc Flex Core Div. [6] Morlan & Associates, Inc Flex Core Div. Technical Staff, Split core current transformer Model FC Specifications, Morlan & Associates, Inc Flex Core Div. [7] J. Teresko Power Plays, November 3, [8] J. Smith, Basics of Power Management Equipment Plant Engineering, April 1 st, 4. [9] j. Eggink, Managing Your Power: How to Get Started Plant Engineering, January 1 st,.

ELECTRICAL UTILITY COST REDUCTION THROUGH PREDICTIVE CONTROL December 2008 BACKGROUND

ELECTRICAL UTILITY COST REDUCTION THROUGH PREDICTIVE CONTROL December 2008 BACKGROUND ELECTRICAL UTILITY COST REDUCTION THROUGH PREDICTIVE CONTROL December 2008 Project Manager: Chris Hayes Advisor: Paul I-Hai Lin 1 BACKGROUND Kraft Foods 35 uction of Energy Costs Over The Next 5 Yrs. (2005

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