Power System Stabilizer Guideline - SERC

SERC Power System Stabilizer Guideline
System Modeling Data Requirements be provided prior to commercial operation. For the retrofit
of a PSS to an existing unit, the documentation should be provided when the testing of the PSS
is complete. If future system conditions change significantly, the Transmission Planner may
request the Generator Owner to reset the PSS parameters to more appropriate settings to
preserve the overall reliability of the grid.
The Transmission Planner may provide criteria to allow the power system stabilizer to be taken
out of service. The PSS should be taken out of service for scheduled maintenance only
following consultation between the Generator Owner and the Transmission Operator and with
the agreement of the Transmission Operator. The Generator Owner should be requested to
take the PSS out of service if the Transmission Operator identifies transmission system
operating conditions during which the operation of the PSS adversely affects the stability of the
transmission system or its connected generators. If a power system stabilizer is removed from
service or is not capable of automatic operation, the Generator Owner should immediately notify
the Transmission Operator. Operating limits may apply in such cases based on system needs
identified by the Transmission Operator.
Unless the Transmission Planner determines that system studies or operating experience
show need for a PSS, then generators rated less than or equal to 50 MVA or generators
connected at a nominal system voltage level below 100 kV are not expected to install a new
PSS. This only applies to plants where the total generation does not exceed 300 MVA.
The guideline is effective upon approval by the SERC Engineering Committee.
SERC EC Approved on October 6, 2011 Rev 2
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