Simulator 16 User Guide - PowerWorld

Contingency Options: Generator Maximum MW Response
The Generator Maximum MW display can be opened from the Modeling group of the Contingency
Analysis dialog Options page. This display provides a specialized generator display with specific fields
used for setting the post-contingency maximum MW response of individual generators.
Use the CTG Max Response MWfield for entering the contingency maximum response. During the
post-contingency power flow solution, a user may enter a MW amount specifying the maximum
amount of generator response from a generator. By default, these values are blank. If you enter a
value in this column, the generator response will be limited to this absolute MW response (response
may be either an increase or a decrease). Regardless of the response settings, a generator will not
respond unless its AGC field is set to YES or any Generator Post-Contingency AGC conditions are set
such that the generator will be on AGC post-contingency.
The maximum MW response for a given generator will only be enforced if enforcing generator MW
limits for that generator. The maximum MW response is implemented by adjusting the generator
minimum and maximum limits in order to limit the response, e.g. (New Max MW) = (Present MW) +
(Generator Max MW Response) and (New Min MW) = (Present MW) - (Generator Max MW
Response). Therefore, the maximum MW response will only be implemented if a generator's limits
are enforced.
Generator maximum MW responses will be enforced, as long as generator MW limits are also
enforced, when using all contingency calculation methods including the Full Power Flow method with
the power flow in either AC or DC mode and the linearized lossless DC methods.
Note: The user may also add a column called CTG Max Response % to the generator display.
When entering data in this column, the CTG Max Response MW values will be set at a respective
percent of the maximum MW output of the generator. If a generator’s maximum MW output is less
than or equal to zero, then the Maximum Response will always be set to zero.
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