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NRECACooperative Research NetworkModern Grid InitiativeSoutheast SummitAugust 10, 2006Nashville, TN
Electric Cooperatives . . . 864 distribution, 66G&Ts in 47 states 5% of power supply 43% of distributionlines, 75% of land mass 39 million consumers 60% residential, 35%commercial/industrial
NRECA . . .690 Employees at NRECA Supporting60,000 Co-op Employees - - Legislative, Policy & Communications Retirement, Health & DentalInsurance Homestead Mutual Funds Education/Training to 20,000registrantsT h i l&S f t P
CRN Website: Primary deliverychannel for results
CRN R&D Process MAG meetings provide guidance, suggestionsfor new project ideas with deliverables in one totwo years. These projects are then presented to CRC(Cooperative Research Council) for fundingdecision. Between meetings, the MAG works with CRNstaff providing feedback on each project’sprogress and deliverables
CRN R&D Process High priority projects that bubble upbetween meetings can be approved ina fast track process. TechSurveillance is continuously usedto flesh out ideas and develop whitepapers like:– New distributed reactive power sourcemay reduce grid congestion– California tests flywheel matrix forfl ti ( liti tif
Transmission Reliabilityand SecurityMembership Advisory Group (MAG)Alabama Electric CooperativeArkansas Electric Cooperative CorporationAssociated Electric CooperativeBasin Electric Power CooperativeEast River Electric CooperativeEast Kentucky Power CooperativeGeorgia Transmission CorporationGreat River ElectricHoosier Energy RECTri-State G&T AssociationTennessee Valley Authority (Invited Guest)
Research Portfolio Priority andProjects Enhance performance of new & existing assets– Investigate and demonstrate software toprevent system collapse– Outline short term solutions to transmissioncongestion– Address transmission line siting barriersincluding cost analysis of overhead vs.underground transmission lines
Mission Provide technology solutions toElectric G&T’s and co-ops thatoptimize the existing and evolvingtransmission system, enhancereliability, and mitigate security risks
CRN TRAS Website
Completed Short-Term Solutionsto Transmission Congestion Priority of Fixing TransmissionCongestion:– Implement transmissionoptimization software– Examine and implementdynamic rating of lines– Improve EMS (or install EMS ifnot in place)– Install Advanced Conductorsand upgrade transformers– Install distributed dynamic flowcontrol devices– Install FACTS devices
Impact Comparison ofOH vs UG Lines Visibility Environmental– Wetlands, water, threatened andendangered species habitat, culturalresources Land use– Agriculture,airports, roads EMF
CRN Project to Evaluate Real TimeReliability (Optimization) Softwarewith HOST EKPCAfterOptimizationBeforeOptimization
Possible Optimization, Mitigation MeasuresUsed in On-Line Optimal Tools & for Planning Applies a minimum number of mitigation measures based on user-defined priority schedule which may include:– MW Dispatch– MVAr Dispatch– Capacitor and Reactor Switching– Transformer Tap Change– Line Switching (In and Out)– Optimal Capacitor, Reactor, FACTS, SuperVARtm Placementand size– Phase Shifter settings– Load Curtailment– Defined Operating Procedures– Switching Not Affected Lines
Using Optimization Software toIncrease Size of Operating Region inan Operating Environment at EKPCResults prior tousing OptimizationResults after usingOptimization
CRN Project to Evaluate VoltageStabilizing Technologies at TriState and Basin Electric
“Back to the Future” with a High TemperatureSuperconducting Synchronous Condenser New lower cost option ( 50/kVAr) for dynamic reactive compensation.Instantly 2X output for transients and 4X output forpeaks.Low operating, maintenance cost (50% less energy thancurrent options)Supports transient stability(inherently stable)Commercially available nowPrototype successfullytested in TVA service areain 2005
CEATI Overhead Line DesignIssues & Wind and Ice StormMitigation (WISM)
CEATI Life Cycle Management ofSubstation Equipment andApparatus (LCMSEA)
Initiatives Under Development “Installing your first Phasor MeasurementUnit (PMU)”-- likely partner, TVA Evaluate a project to develop soil databasesto identify areas with poor grounding(lightning mitigation) and corrosion potential Monitor results of the TVA Distributed SeriesImpedance test of GATECH IPIC’s CurrentLimiting Conductor and evaluate joining thenext phase of the project to develop a “SmartWire” for commercial power flow control
“Smart Wires” Power FlowControl Device Defer building of new lines Massive redundancy Zero footprint solution Mass produced modules Easy and rapid installation Control power flow along contract path Maintenance with existing workforce Reduced time to deploy and overall cost
Possible Near Term Technology for LowCost Dynamic Flow Control Device“Smart Wires” Couplers that inject VARs in series tochange line impedance to enhancesystem reliability & capacity whenconsidering (N-1) contingencies 700 per mile to increase 138 kV linecapacity 1% 30 mile line, a 216,000 investmentcould increase power flow by 10% or12 MW
G&T’s can potentially benefitfrom the ENTIRE CRN program –examples: Evaluation of Aging Conductorsprepared by Dale Douglas Communication Infrastructure forElectric System Automation VRA-Vulnerability Analysis and RiskAssessment for Electric Cooperatives Automating a Distribution Cooperative Implementing a SensorNet
Transmission Reliability andSecurityRESOURCES TO:Reduce CostImprove ReliabilityMinimize CongestionAvoid Blackouts
Thank you!Courtesy NASA
NRECA . . . 690 Employees at NRECA Supporting 60,000 Co-op Employees - - - Legislative, Policy & Communications Retirement, Health & Dental Insurance Homestead Mutual Funds E
