Coal Fired Power Stations & Pwr Sys Inertia

[rob52]

Interesting Article on Coal Fired Power Stations
Interest in Japan WRT USC Coal Fired Pwr Stations has risen Post fukushima

Pg14 shows  - Thermal efficiency of coal - fired power generation in major countries (1990-2011)
- Australian Units down on Efficiency noting that the Best BTU Coal is exported leaving the Crud/non export quality to be burnt locally and that it probably refers to the 660MW Toshiba Units in NSW.  Not the more recent QLD Builds like the 2007 Kogan Creek in Qid, Australia 750MW supercritical-steam coal-fired power station.

Pg15 - Discusses sizes of Sub Critical, Super Critical (SC) & Ultra Super Critical (USC)


Some Further Reading (?Assume no bias? in the WC Publication enotsrenroC)
Coal-Fired Power Generation in Japan and the World
on Pg27-31
By Sumie Nakayama
Senior Advisor on Climate Change, J-POWER


***********
&
An interesting lecture on what happens when you don't have Coal Fired Power Stations or Hydro providing Spinning Reserve with rotational inertia! and the Wind Turbines and Solar push beyond 25% of total installed Capacity. (ignore the hand gestures and hair combing by the PHD Student)

Power System Inertia: Challenges and Solutions
Engineers Ireland
Published on May 5, 2016

Food for thought for the "green is good...hand waving Wind & Solar is grand politicians".

There is much work to be done WRT the following to ensure system stability:
- System Operational Limits, a) Freq, b) Voltage, c) Dynamic Stability each Sys is different.
- Stability Limit under Fault Conditions - Frequency drop on fault df/dt, 50Hz Frequency recovery time, Voltage Dip on Fault dv/dt, 50Hz Voltage recovery, Dynamic Stability Limit ie ability to keep synchronism and avoid pole slipping.
- RoCoF
- FCAS
- Payment for Ancillary Services not just the kW produced.  Ability to deliver VARS into a fault matter to! (Power Electronics at 1.2PU rated = smoke out)
- Traditional Load Shedding is just not enough
- Switchable domestic demand starting with hot water systems, A/C and heating systems (Dynamic Load Management)
- Consideration of cutting away the steam turbine for older inefficient coal fired units and run the Alternator as a Synchronous Condenser with an upgrade to the control system for improved Dynamic System Performance

Rob

[rob52]

Japan Coal Fired Power Plants Plan

Pg52 Map of Proposed Power Plants
"Japan has 43 coal fired power plants under construction or planned to provide the dominant source of energy for electricity. Bloomberg 9 April 2015"

Rob

[John]

Apr 24, 2017 6:20:41 GMT -5 rob52 said:

Japan Coal Fired Power Plants Plan

Pg52 Map of Proposed Power Plants
"Japan has 43 coal fired power plants under construction or planned to provide the dominant source of energy for electricity. Bloomberg 9 April 2015"

Rob

They learned a very hard and cruel lesson with Nuclear, and will be paying for this for thousands of years. Problem is, the Pacific will be a dead ocean soon, 300 tons of highly radioactive water dumped into it daily. Dead fish are being washed up on the western seaboard of the states daily, whales have been spotted upside down with tumours and cancers on their lower bodies.

Where's the media? They were all over the Chernobyl when that happened, nothing, Nadir, ziltch, I hear crickets!!

Three reactors with super hot molten down fuel, just a matter of time before the bottom of the containment vessels are breached, then what???

This is the worlds worst ecological disaster and it's still unfolding, will the media start reporting when all that radioactive water starts contaminating the Indian and Atlantic Oceans??? Just a matter of time!!