Tripping energy storage

What is generation tripping?

For the short-term stability issues, generation tripping is applied in the special protection scheme (SPS) of the Korean power system when a large fault happens in the 765 kV transmission line near the large generation complexes.

Can generator tripping and generation curtailment overcome stability issues?

Several countermeasures such as generator tripping and generation curtailment are proposed to overcome stability issues. A combined action with generator tripping and generation curtailment is applied to stabilize the system after the critical event, however generation curtailment might reduce the economical operation of the system.

Are battery energy storage systems a countermeasure?

Using their fast response characteristic, battery energy storage systems (BESS) are regarded as a countermeasure to relieve the curtailment.

How much generation tripping can be reduced in GCR-Bess?

For east coast region, the 1.4 GW GCR-BESS allows the generation tripping amount to reduce to 3.5 GW. As described in subsection 2.1, to stabilize the system with frequency nadir not lower than 59.2 Hz, the generation tripping of 3.5 GW needs to be combined with generation curtailment of 1.3 GW during the normal state operation.

How much power is tripped after fault clearing?

After fault clearing, a total of 3.3 GW power from eight generation units is tripped, and this generation amount is gradually increased to 4.65 GW as the GCR-BESS capacity increases. The increase in generation amount means the generation curtailment is decreased as the capacity of GCR-BESS is gradually increased.

Does generation tripping maintain rotor angular stability?

Instead, by applying 4.5 GW generation tripping, rotor angular stability of the corresponding generators is maintained. This simulation is conducted when the system is in the peak load condition of 91.7 GW using network data of 2024. The total output of those generators critically affected by the fault is 9 GW, in terms of transient stability.