Green Energy
Discussion about previous post (Over Frquency happened at a windy winter night)
After I discussed what happened the outage three days ago - the situation I posted previously - I found an explanation for that: -
In winter days , Electrical loads are decreasing here in Egypt especially at night , therefore the frequency increases from 50 HZ .
the Dispatch should decrease the loads of the generating units to limit the decrease of frequency , and the generating unit's Operator should take care of such these situations.
At that night , Turbine's operator should realize the increase of frequency and the decrease the actual MW , he should switch the turbine control to manual , to limit the decrease of MW , Then he should switch the HPTV to manual and start open it gradually to release the over pressurized steam at HPTV .
The Boiler's operator should maintain the main steam pressure to the actual MW by the percentage opening of HPTV , therefore the boiler master in that situation will control main steam pressure tracking to the opening of HPTV , then he should try to limit the load as possible away from Fluctuations .
After frequency is settled we can increase the MW and close the HPTV , then switch again the Turbine set and Boiler Master to Automatic Mode.
That is a brief conclusion for what should happened in such that situation.
-
Boiler (master Fuel Trip)
Steam Generator ( boiler ) is very important equipment at thermal power units , Boiler is the steam supply for the unit to rotate the turbine's rotor , hence produce electricity at Generator's stator. Boiler usually equipped with solar and Main...
-
Load Swing Test
YESTERDAY , We made a test at our power station ( 2*350 MW - Gas/Oil Fired ) , this test is LOAD SWING TEST. This test is implies the load of the unit at 350MW , for a while . and collect our data from the unit especially the boiler and Turbine...
-
Boiler Control Theory (feed Water Control)
Boiler Control Theory (Feed water Control) The feed water is controlled to keep the drum level . Water-level controls continuously monitor the level of water in a steam boiler in order to control the flow of feed water into the boiler and to protect...
-
Advanced Process Controller (apc) For Controlling Steam Power Plant {part 2}.
Advantages of an Advanced Process Controller Figure 5 The APC-based unit control concept for main steam pressure control Figure 5 can be differentiated from the conventional unit control approach in several important ways: The APC is able...
-
{ Boiler And Turbine } Control Modes
Boiler Master (Firing Rate Demand) Boiler Master (basic firing rate demand) computation is dependent on the Current operating mode like Coordinated mode, Boiler Follow mode, Turbine Follow mode,Manual mode. This demand is transmitted in parallel to...
Green Energy