Thermal Limit Operation Criteria

Techniques to control contingency or system violations.

Last Updated: June 22, 2025

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Definition by PJM

Source: p29, Revision 67

PJM uses the following techniques to control contingency or system violations:

Adjusting PARs.

Switching reactive devices in/out of service or adjusting generator MVAR output.

Switching transmission facilities in/out of service.

Adjusting generation MW output via redispatch.

Adjusting imports/exports.

Issuing a TLR (Transmission Loading Relief).