Intermittency Of Renewables?… Not So Much

[PamW]

14. 100% WRONG as ALWAYS

kristopher states:
Poor Dr.Greg/Pam. All hat, no cattle.

Considering the source; a person that is ALWAYS 100% WRONG; I guess I should be flattered.

Holding true to form, kristopher is also 100% in ERROR about reactive power. He has been commenting on the "reactive power" that will come from using V2G - vehicle to grid inverters, but all the while he has been oblivious to something very important:

Reactive power is a measure of something BAD!!!

Reactive power represents waste, inefficiency, and pollution of our power transmission lines.

Perhaps, kristopher can educate himself here:

http://wiki.answers.com/Q/What_is_reactive_power

which states beginning at paragraph 4:

In other words, if your electrical appliance contains inductance or capacitance, then electrical energy will periodically return to the power plant, and it will flow back and forth across the power lines. This leads to an extra current in the power lines, a current which heats the power lines, but which isn't used to provide energy to the appliance.

and

This undesired "energy sloshing" effect can be eliminated. If an electrical load contains both a coil and capacitor, and if their resonant frequency is adjusted to exactly 60Hz, then the coil and capacitor like magic will begin to behave like a pure resistor.

As stated above, the reactive power or "energy sloshing" is undesirable, and it heats the power lines, but isn't used to provide energy to the appliance. In the case of loads, the undesired "energy sloshing" can be eliminated, but not for sources like V2G inverters. V2G inverters will inherently be a source of inefficiency and disruption to the power lines. The papers that kristopher references deal with ways to minimize but not eliminate the undesirable reactive power.

Another analogy is due to Prof. Sauer of the University of Illinois, presented courtesy of the University of Wisconsin:

http://www.pserc.wisc.edu/.../special.../Sauer_Reactive_Power_Sep_2003.pdf?

The footnote at the bottom of page 3 gives another analogy for "reactive power":

Another analogy that says that reactive power is the "foam on the beer" is fairly good here because the space in the glass is taken up by the useless foam - leaving less room for the "real" beer.

All the while kristopher has been touting the benefits of "instantaneous reactive power" that will be provided by the V2G - Vehicle to Grid inverters. However, in reality "reactive power" is BAD - it denotes energy waste and inefficiency on the power transmission line.

What are you going to be hawking next kristopher; cola laced with "fabulous strychnine".

Why don't you restrict yourself to subjects that you understand, which leaves.....????

Again, where did you say you studied electric power engineering?

I thought NOT!

PamW