Archive for June, 2011

DA…The Business Case

June 25, 2011

First in a series of excellent sessions on distribution automation I recently discovered:

The Business Case

The Second focuses on DA Implementation:

Implementing the System

The third is about the why’s and wherefore’s of comm requirements for DA:

Communications for DA

The fourth looks at the architecture of distribution automation:

DA-System Architecture

The fifth surveys distribution management systems:

Distribution Management Systems

The sixth examines smart substations:

The Smart Sub-Station

The seventh reviews what is Volt-VAR Control and Optimization:

Volt-VAR Control & Optimization

And the last session deals with Automatic Feeder Switching:

Automatic Feeder Switching


Smart Transformers

June 21, 2011

The electronic contraption, only in its first generation, was named this year by experts at Massachusetts Institute of Technology as one of the 10 most important technology innovations of 2010. MIT ranked the “smart transformer,” created by the FREEDM Systems Center in Raleigh, alongside recent advances in cancer genomics and synthetic cells…NCSU’s Smart Transformer

Case Histories for Distribution Automation

June 19, 2011

Most automation by electric utilities has been applied in the substation and at the enterprise level. Relatively few utilities have deployed distribution automation-the automation of devices outside the substation fence (i.e., out on the feeders themselves). This is due primarily to the potentially large expense of implementing DA, the lack of economic justification for such expenditures, and the unique and difficult technical challenges of implementing DA on a widespread basis.

Drivers include:

  • increased customer expectations in terms of power quality and reliability;
  • growing number of regulatory incentives, both positive and negative;
  • increased performance and affordability of DA communications choices; and,
  • increased variety and capability of automation devices and software.

An efficient, reliable and secure communication infrastructure is vital for a successful DA implementation. Unfortunately, there is no single “cookbook” communication solution or model for success that can be applied to all utilities. Each utility’s unique characteristics-geography, distribution feeder electrical capabilities and constraints, customer density, human and financial resources, customer demographics and preferences, and a host of other characteristics-will determine the requirements for the communication system.

First DA Case Study

2nd DA Case Study

McAfee’s ‘In the Crossfire’

June 15, 2011

“…With the global economy still fragile after last year’s financial crisis, assuring the integrity and availability of key national industries may fall out of focus as a government priority, but will remain a key determinant of strategic vulnerability.

Six hundred IT and security executives from critical infrastructure enterprises across seven sectors in 14 countries all over the world anonymously answered an extensive series of detailed questions about their practices, attitudes and policies on security—the impact of regulation, their relationship with govern- ment, specific security measures employed on their networks, and the kinds of attacks they face.

Critical infrastructure owners and operators report that their IT networks are under repeated cyberattack, often by high-level adversaries. The impact of such attacks is often severe, and their cost is high and borne widely….”

In the Crossfire_Critical IT

UK Running Out of Wind? What?

June 3, 2011

Comment:  “… the comments by Prof. Lockwood are of interest and possibly the most important point of this article. He suggests that the Arctic blocking resulting from reduced solar activity is affecting the jet stream positions and is similar to what happened during the little ice age, he further forecasts this might continue for 40 years. He has published about this before and other studies of the significance of Arctic blocking have been seen of late, the Moscow heat wave being attributed also. Ignoring the wind for a moment this is also a forecast for cooler and longer winters is it not?…”

See the TELEGRAPH.CO.UK Article:  UK Wind Loss