There's a fine line on that "good' bot. What I'm puzzled by is why all these public databases aren't indexed by search engine crawlers? Its funny to me how many businesses run on public data that most people just don't know how to find and why they aren't indexed. Arrest records, tax records, professional registrations, you have to go to specific state, county, type sites deal with kludged searches and sometimes have a hard time finding yourself, even when you know you're in there.
I have a ti-36 solar... if you're taking the PE exam check the NECEES website,http://ncees.org/exams/calculator-policy/ that is the definitive site for what is allowed. Get the calculator a few weeks ahead of time if possible take a short practice exam with it... since you "know" your normal calc. (which btw is not allowed) Heck have a spare anyway... I had 2. shit happens Engineers Prepare for anything;)
If the clouds cover a very large area then again there is no instability created all PV's are running at a lower stable and predictable rate..... Current PV install total is tiny, it really couldn't possibly make a difference.
A cloud only covers a small area at a time, when it covers one house, its off a house 1/2 mile away, there is an averaging effect. The grid voltage does ride up and down a little as this can not be managed perfectly, same happens when a big motor starts or other high loads. Power in or out will cause a change. Yes, a coal plant can take a full day to get to full operating efficient mode, and nuclear can take 2-3 days I believe. Hydro, can be at full speed in 30 seconds. Simple cycle gas turbines can be up in 15 min. and combined cycle at full eff. in about 45 min. Right now, Combined cycle gas turbines offer the best eff. (~60% thermal) lowest cost to build, quick build time (about 2 to 2.5 years) and operate, so long as natural gas stays cheap. Over the past few years much as been done to allow gas turbines run at less then 100% and still maintain good eff. Often times plants are setup as 2-on-1 or 3-on-1 (gas turbines to steam turbine) ratios to allow more fine stepping of power output. Wind turbines can cause grid instabilities as large fronts pass them and sometimes when you'd think they're making tons of power its all just wasted. Pumped storage is often used near base-load nuclear plants as they can not start and stop.
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There's a fine line on that "good' bot. What I'm puzzled by is why all these public databases aren't indexed by search engine crawlers? Its funny to me how many businesses run on public data that most people just don't know how to find and why they aren't indexed. Arrest records, tax records, professional registrations, you have to go to specific state, county, type sites deal with kludged searches and sometimes have a hard time finding yourself, even when you know you're in there.
I have a ti-36 solar... if you're taking the PE exam check the NECEES website,http://ncees.org/exams/calculator-policy/ that is the definitive site for what is allowed. Get the calculator a few weeks ahead of time if possible take a short practice exam with it... since you "know" your normal calc. (which btw is not allowed) Heck have a spare anyway... I had 2. shit happens Engineers Prepare for anything ;)
If the clouds cover a very large area then again there is no instability created all PV's are running at a lower stable and predictable rate..... Current PV install total is tiny, it really couldn't possibly make a difference.
A cloud only covers a small area at a time, when it covers one house, its off a house 1/2 mile away, there is an averaging effect. The grid voltage does ride up and down a little as this can not be managed perfectly, same happens when a big motor starts or other high loads. Power in or out will cause a change. Yes, a coal plant can take a full day to get to full operating efficient mode, and nuclear can take 2-3 days I believe. Hydro, can be at full speed in 30 seconds. Simple cycle gas turbines can be up in 15 min. and combined cycle at full eff. in about 45 min. Right now, Combined cycle gas turbines offer the best eff. (~60% thermal) lowest cost to build, quick build time (about 2 to 2.5 years) and operate, so long as natural gas stays cheap. Over the past few years much as been done to allow gas turbines run at less then 100% and still maintain good eff. Often times plants are setup as 2-on-1 or 3-on-1 (gas turbines to steam turbine) ratios to allow more fine stepping of power output. Wind turbines can cause grid instabilities as large fronts pass them and sometimes when you'd think they're making tons of power its all just wasted. Pumped storage is often used near base-load nuclear plants as they can not start and stop.