Jump to content

Texas007

Certifiably Surly
  • Posts

    243
  • Joined

  • Last visited

Everything posted by Texas007

  1. Holy shit, I said it could take weeks. India connected their different grids and it took 2 - 3 days to synchronize. Lubbock is one relatively small load and they may be able to sync in short succession. Every time a generator comes online it has to sync and does so in minutes. However, to join the whole state with another grid would require bringing on load in pieces and if oscillations started to occur they could lose it and have to start the process all over. People were freaking out over frequency during the winter event because they were worried about losing the grid. They were worried because they knew losing the grid would take at best case days to restore. People have been advocating for decades to increase resiliency and connect the grids. Yes, the technology is there to do it but there are significant hurdles to accomplish that.
  2. Frequency loss is exactly why we had rolling blackouts and almost lost the grid. Yes, a fraction of a Hz fluctuation (~0.1) would have catastrophic affects. Why do you think we have an eastern and western grid?
  3. A full connection of the Texas grid with the western or eastern grids would require a matching of the frequencies. This could only be accomplished by dropping load and slowly bringing it back online and would be no small task. We already have DC or variable frequency transformer connections to the other grids that alleviate the need to match frequencies but it is severely limited (5 connections at ~1100-MW). There was talk of building a "super station" out west that could transmit 5-GW but I think that was scraped or significantly scaled down. Point is it would take billions of dollars to build enough connections that wouldn't require matching frequency.
  4. Thanks to everyone who has contributed on this thread. It has been a great read. The system did perform as intended. It is set up to financially incentivize generating units to stay online during these type of events. A generator who tripped offline not only lost out on a huge pricing profit opportunity but were also responsible for buying back the power they failed to deliver. If a South Texas 1.2-GW unit trips offline while prices are at $9K/MW-hour it is essentially losing $360,000 every minute it is down. Over 30-hours that adds up to $648,000,000! Most, if not all, companies made weatherization improvements after the 2011 event. Some obviously did better and more than others. Some were just lucky (i.e. able to maintain fuel supplies). However, the open energy market operated in Texas is volatile and that means making a profit is difficult and margins are tight. A "low" probability event doesn't always add up to taking additional action in spite of the high consequences. Especially if your already having a hard time maintaining a profit. That is why a lot have sold off, shut down, and/or filed for bankruptcy. Removing the $9K cap would increase consequences of a trip and make weatherizing more of a priority (i.e. higher consequence = more risk mitigation). Removing the cap would also seemingly cause increased volatility. Market volatility also means investors are hesitant to dump funding into bringing on new generating units. A breakthrough in batteries would be great but if you really think it could happen in the next ten to fifteen years why would you even think about building a new combined cycle plant? There is no guarantee of short term profits and it could be mothballed before the loan is paid off. One last thing: connecting our grid to the national grid is almost a non-starter. It would require a massive infrastructure upgrade and even more important a system wide shutdown and black start. The grid would potentially be down for days if not weeks.
  5. I know I shouldn't engage... but trying to explain how a team that didn't even make the playoffs can somehow still claim a top 4 finish is very aggy. Do you want to know how I know? Because aggy morons have been trying to claim that very fact in baseball for 30 fucking years! The 1989 greatest aggy baseball team of all-time finished #2 in the FINAL Baseball America POLL. However, that very same team lost in true aggy fashion in the regionals to LSU. Only an aggy would try to claim top 4 finish in a year they didn't even make it to Omaha. Same applies to all sports including football beginning with implementation of the CFP system (i.e. post 2014). Stop encouraging aggy reasoning.
  6. *aggy Concrete has almost no strength or bond with the rebar until it hardens (i.e. initial set = 4 - 6 hours after placement). Additionally "wet" concrete is relatively heavy (~150 pcf vs. 62.4 for water). Thus if the form system can't support the weight then a blow out or collapse will occur. Contractor probably tried to eyeball it and used experience to "design" the formwork and supports... or they hired an aggy to do it.
  7. Haha. It clearly is the job of the person in front to put the divider behind their shit. I sometimes intentionally don't put it down just to witness the chaos that ensues in front of me.
  8. Good catch. Steve Rossignol and The Rag Blog need to get their shit together.
  9. Pretty obvious it was a sighting of Asa Grumbles (Ghosts of LCRA) One of the many hungry and unemployed masses seeking work during the Depression, Grumbles was a carpenter working on the installation of the concrete forms on the dam. One of the LCRA hands told me that Asa Grumbles had once played bass guitar with Ernest Tubbs before Ernest Tubbs became famous. But late on December 26, 1939, the day after Christmas on the night shift, 32-year-old Asa Grumbles was killed when a cable snapped and a load of wet cement opened above his head and submerged him in a concrete pour. Rumors persist to this day that they did not get all of Asa Grumbles out of the dam. They got Asa out of the concrete — witnesses do tell of seeing him lying in state and he is buried in the Fitzhugh cemetery — but rumors persist to this day that they did not get all of Asa Grumbles out of the dam. There are stories about a hand and a ring on that hand that did not make it out of the concrete. Grumbles left a young wife and two children.
  10. LCRA Flickr page has lots of pictures from when the Dam was being constructed (Mansfield Dam Construction Photos). "There are over three miles of tunnels inside of Mansfield Dam"
  11. I was gonna say that looked closer than I thought...no review?
×
×
  • Create New...