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Planning and Analysis Tools to Evaluate Distribution Automation Implementation and Benefits. Anil Pahwa Kansas State University Power Systems Conference Clemson University March 2005. History of Distribution Automation. The concept originated in the 70s

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Planning and analysis tools to evaluate distribution automation implementation and benefits

Planning and Analysis Tools to Evaluate Distribution Automation Implementation and Benefits

Anil Pahwa

Kansas State University

Power Systems Conference

Clemson University

March 2005


History of distribution automation
History of Distribution Automation Automation Implementation and Benefits

  • The concept originated in the 70s

    • Use evolving computer and communications technology to improve operating performance

    • A few small pilot projects

  • Several major pilot projects in the 80s

  • Some large and many small projects in the 90s


Da at crossroads
DA at Crossroads Automation Implementation and Benefits

  • Difficult to justify using hard cost/benefit numbers

  • Business uncertainties due to deregulation and restructuring

  • Consolidation and focus on cutting operating expenses

  • Equipment reliability and obsolescence


Renewed interest in da
Renewed Interest in DA Automation Implementation and Benefits

  • Emergence of new technologies

  • New measuring devices and sensors

  • Powerful and refined communications equipment

  • Highly advanced computing equipment

  • Advanced power electronics

  • Advanced protection equipment


Drivers for advanced da
Drivers for Advanced DA Automation Implementation and Benefits

  • Enhancements in efficiency, reliability, and quality

  • Performance-based rates

  • Sensitive loads

  • Need to do more with less


Advanced automation devices
Advanced Automation Devices Automation Implementation and Benefits

  • Perform multiple tasks

    • Data logging

    • Control

    • Protection

    • Intelligence

  • Cost of these devices must be allocated to different functions


Value of reliability and quality
Value of Reliability and Quality Automation Implementation and Benefits

  • Different customers need different levels of reliability and quality

  • Power quality parks

  • Potential customers and their willingness to pay higher rates for premium service


Probabilistic nature of failures
Probabilistic Nature of Failures Automation Implementation and Benefits

  • Failures on distribution systems are random

  • Several factors increase the probability of failure

    • Trees, wind, lightning, animals

  • Map effects of these factors to identify feeders with higher probability of failure

  • Target these feeders for automation


Analysis tools
Analysis Tools Automation Implementation and Benefits

  • Real-time analysis for fast decisions

  • Distribution state estimator

  • Input data

    • System topology

    • Parameters of system components

    • Status of switches and breakers

    • Other measured data


Computational intelligence
Computational Intelligence Automation Implementation and Benefits

  • Central vs. Distributed

  • Data transmission bottlenecks

  • Distributed intelligence to alleviate bottlenecks

  • Hierarchical communication and computation

  • Balance between central and local


New sensors
New Sensors Automation Implementation and Benefits

  • Advances in sensor technology

  • New information

  • New applications

  • Lower cost with higher quantities


Asset management
Asset Management Automation Implementation and Benefits

  • Important for utilities

  • Enhance with advanced DA

  • Monitor condition

  • Manage real-time loading

  • Schedule maintenance

  • Increase utilization


Advanced communication technology
Advanced Communication Technology Automation Implementation and Benefits

  • Better communication equipment

    • Fiber optics

    • Radio

    • Satellite

  • Integrate the Internet

  • Appropriate media for the application


Conclusions
Conclusions Automation Implementation and Benefits

  • Distribution Automation is entering a new era

  • More robust and reliable equipment

  • Higher computing power

  • Higher emphasis on reliability

  • Utilities must consider DA as a planning option

  • Advanced planning and analysis tools are needed for DA implementation


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