Load Shedding not activate automatically even the power balance already has minus value
Hi Team,
i have question related to Load shedding command, i simulate the load then i found the load shedding command is not activated automatically even the power load balance already get minus valus (in this case -10 MW).
Could you please advise, why this load shedding not activated automatically?
Thanks
BR
Asked 1 year ago
Voted best answer
2
Two things to be noted:
1. For normal system, load shedding to act automatically two conditions should satisfy at the same time:
a. Opening on any critical breaker (source feeder/ bus coupler/ tie feeder)
b. power balance to be negative during opening of critical breaker.
If these 2 conditions act at the same time then load shedding will act.
if power balance is negative & critical breaker did not opened then it will not act. If critical breaker opened & power balance is still positive then shedding will not act.
2. here you are not working with live values & also system shows your complete load is non sheddable. So even if you open critical breaker it will not act.
Hope this clarifies your doubt.
1. For normal system, load shedding to act automatically two conditions should satisfy at the same time:
a. Opening on any critical breaker (source feeder/ bus coupler/ tie feeder)
b. power balance to be negative during opening of critical breaker.
If these 2 conditions act at the same time then load shedding will act.
if power balance is negative & critical breaker did not opened then it will not act. If critical breaker opened & power balance is still positive then shedding will not act.
2. here you are not working with live values & also system shows your complete load is non sheddable. So even if you open critical breaker it will not act.
Hope this clarifies your doubt.
Answered 1 year ago
Answers
0
you should have a critical breaker trip to trigger load shed.
1. critical breaker trip
2. negative power balance
above two things needed for load shed trigger
1. critical breaker trip
2. negative power balance
above two things needed for load shed trigger
Answered 1 year ago
0
It appears you have a "non-shedable load" of 90 MW. Maybe trace that number back in the application software ?
Otherwise, this appears to be a site specific application problem. Not sure that anyone on this forum can help you - unless they are already familiar with your software.
Otherwise, this appears to be a site specific application problem. Not sure that anyone on this forum can help you - unless they are already familiar with your software.
Answered 1 year ago
0
Hi,
In your accumulated load table, it is not reflecting the Sheddable load. So check LST table all are having values.
BR
ATP
In your accumulated load table, it is not reflecting the Sheddable load. So check LST table all are having values.
BR
ATP
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