THE EFFECTS ON KCP&L BREAKER INTERRUPTING RATINGS WITH INSTALLATION OF THE NEW IATAN GENERATOR #2
This data shows the effects on the KCP&L breaker interrupting ratings with and without the installation of the new Iatan Generator #2 and associated 345KV Lines. For modeling information see comments at end.
LOCATION W/O Iatan Gen #2 W/Iatan Gen #2
Blue Valley
BKR R8-14 99.2% 100.7%
3Ø Rating is 31,259 Amps 1Ø Rating is 34,385 Amps
Greenwood
BKR R2-5 99.5% 99.6% BKR R2-12 99.5% 99.6% BKR R3-5 93.6% 93.7% BKR R3-6 106.8% 106.9% BKR R6-7 106.8% 106.9% BKR R7-12 92.3% 92.4%
The breakers at Greenwood listed above have the following rating: 3Ø Rating is 31,259 Amps 1Ø Rating is 34,385 Amps
Loma Vista
BKR R10-11 98.9% 99.0%
3Ø Rating is 10,940 Amps 1Ø Rating is 12,035 Amps
Paola
BKR R9-11 74.2% 74.4%
3Ø Rating is 10,940 Amps 1Ø Rating is 12,035 Amps
BKR R9-16 100.2% 100.4%
3Ø Rating is 7,814 Amps 1Ø Rating is 8,596 Amps Modeling information
No one correct model exists today that represents the Southwest Power Pool System due to the fact that several utilities failed to enter all required data. There where two models created and used to help represent the system. Each model tried to adjust for the weakness of the other model. One of the models used was the 2006 Southwest Power Pool (SWPP) model which included corrections made to Independence Power and Light’s system. These changes where made due to data supplied by Independence Power and Light and checked against the 2004 Southwest Power Pool Short Circuit Model for accuracy. This model provides a strong positive sequence model for the entire system and would model Three (3) Phase Faults very well. In this model all the zero sequence data had not been entered in the Aquila, Independence, and Amerin Systems making this deficient in those areas. The other model created started with the Aquila’s 2005 Fault Study Model. It was based on the 2004 SWPP model which still included the entire system data. This model was being updated with all of Aquila’s information and also included Amerin’s system and a more correct model of the BPU system. The data for 2006 from KCPL and Independence was incorporated into this model. This provided a better Single (1) Phase Faults by the Aquila, Independence, and Amerin Systems. By comparing and combining data from both models you correct for each systems imperfections.