FRIENDS and WAR

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FRIENDS and WAR

• The mission of the Power Center for Utility
  Explorations is to explore all energy issues
  holistically and to develop innovative solutions
  to complex electric power engineering and energy
  problems involving multidisciplinary teams to
  address issues in electricity infrastructure.
• Alex Domijan
• Professor, Director, Editor-in-Chief
• International Journal of Power and Energy Systems
• Power Quality and Distributed Energy Laboratory
• Department of Electrical Engineering
• University of South Florida
• Tampa, FL 33620
• [phone]
• alexd_at_eng.usf.edu

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Exploration of Damage and Outage Mitigation to
our Electrical Grid due to Weather

• Techniques must take into account present and
  next generation grid systems
• Must be economic, flexible and reliable for
  several decades
• Long term planning and implementation strategies
  must harmonize with short term solutions.

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• Traditional Grid Structure
• Evolution to Central Station plus
  Distributed/On-Site Generation with Integrated
  Real-Time Network Management Demand Response

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Suggested Objectives

• Development of an Electrical Infrastructure that
• Is hardened for weather and reliable operation,
• Permits real time monitoring and control, and
• Enables reverse power flow which allows for
  distributed generation systems to be reliably and
  cost effectively inserted into present electrical
  grids.

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Flexible, Reliable, Intelligent Electrical eNergy
Delivery Systems (FRIENDS) Example of Grid
Configuration
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FRIENDS and Advanced Substation Designs (Quality
Control Centers)
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FRIENDS Example of an Advanced Substation
(Quality Control Center)
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Weather and Reliability (WAR)

• Unique Investigation into the effects of weather
  conditions on reliability
• Involving over 100 people over 4 years
• Ongoing monitoring, database development,
  analysis, and assessment/prediction tools.
• Analysis/monitoring involving most of Florida
• Normalization of reliability indices for weather
  variations in temp, pressure, wind, lightning,
  humidity, etc, by region
• Robust solutions in terms of neural network
  modeling.

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System Under Study
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Interruptions vs Weather conditions
ANN PREDICTION RESULTS
N
Case Number
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Interruptions vs Weather conditions
STATISTICAL METHODS
Multiple Variable Linear Regression Analysis
Wind and Rain vs N (Primary only)

• Regression Results for all FPL

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Hardening and Preparedness vs Weather Conditions

• Not all weather parameters have major
  contributions towards interruptions.
• Determination of Hot Spots is feasible (harden
  hot spots first).
• The contribution of the weather parameters
  towards interruptions depends on the geographical
  conditions of the area under consideration.
• Tree trimming, grid equipment design, backup
  equipment, and crew allocation strategies are
  appropriate goals with the tools being developed.
• The USF Power Quality and Distributed Energy
  Laboratory can serve as a resource for the PSC
  and Florida utilities in an ongoing basis by
  providing information on preparedness vs
  reliability on a real-time basis (important for
  public safety and economic operation of our
  utility grid).

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Power Quality and Distributed Energy Laboratory

• Key Suggestion Provide unique existing
  capabilities already in Florida to monitor power
  quality and reliability in real time state-wide.
• Background - Can monitor power systems real-time
  worldwide
• - First facility in the world with the capability
  to generate 3-phase arbitrary voltages and
  currents to apply to devices under test.
• Advanced Power Line Conditioners
• Various waveform generators
• Three-phase Power Amplifier
• Precision Power Measurement Standard
• Transconductance three-phase amplifiers
• Dynamometer
• Remote monitoring systems
• various motor generator systems
• Advanced Relay testing systems

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Premium Power Park
Examples of Improving Reliability via Advanced
Power Electronics

Preferred feeder voltage
Mvar injected by the ASVC
Alternate Feeder voltage
DVR injected voltage
Load Current
Load voltage
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Distributed EnergyA Barrier to Implementation
in the GridInterface/Grid Connection
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EXAMPLE WIND POWER EFFECTS
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SOLUTION for Non-dispatchable energy resources
(Wind, Solar, Ocean, etc.)