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The tap size is actually controlled via the "Tap Positions" field. So with a tap range of 0.9 ~ 1.1, you have a range of 0.2. With each tap step of 0.00606, the number of tap positions is 0.2 / 0.00606 which is 33.

The current tap setting will either be "Winding 1 Ratio (pu)" or "Winding 2 Ratio (pu)" depending on your control settings.

Here is a series of batch commands to add a 2-winding zero-impedance transformer between a hypothetical bus 1 and bus 2, as generated by PSSE. The winding 2 ratio is one tap off the nominal ratio, at 1.00606.

BAT_TWO_WINDING_DATA_6,1,2,'1',1,1,1,0,0,0,33,0,1,0,0,1,0,1,1,1,0.0, 0.0001, 100.0, 1.0,0.0,0.0, 1.0,0.0, 1.0, 1.0, 1.0, 1.0,0.0,0.0, 1.1, 0.9, 1.1, 0.9,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0," ",

BAT_TWO_WINDING_CHNG_6,1,2,'1',,,,,,,,,,,,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,;

BAT_TWO_WINDING_CHNG_6,1,2,'1',,,,,,,,,,2,,,,,,,,,,,,, 1.00606,,,,,,,,,, 1.03, 0.97,,,,,,,,,,,,,,,,,,;

The tap size is actually controlled via the "Tap Positions" field. So with a tap range of 0.9 ~ 1.1, you have a range of 0.2. With each tap step of 0.00606, the number of tap positions is 0.2 / 0.00606 which is 33.

The current tap setting will either be "Winding 1 Ratio (pu)" or "Winding 2 Ratio (pu)" depending on your control settings. You can also use the "xfrdat" python API to programatically retrieve the tap ratio for two winding transformers.

Here is a series of batch commands to add a 2-winding zero-impedance transformer between a hypothetical bus 1 and bus 2, as generated by PSSE. The winding 2 ratio is one tap off the nominal ratio, at 1.00606.

BAT_TWO_WINDING_DATA_6,1,2,'1',1,1,1,0,0,0,33,0,1,0,0,1,0,1,1,1,0.0, 0.0001, 100.0, 1.0,0.0,0.0, 1.0,0.0, 1.0, 1.0, 1.0, 1.0,0.0,0.0, 1.1, 0.9, 1.1, 0.9,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0," ",

BAT_TWO_WINDING_CHNG_6,1,2,'1',,,,,,,,,,,,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,;

BAT_TWO_WINDING_CHNG_6,1,2,'1',,,,,,,,,,2,,,,,,,,,,,,, 1.00606,,,,,,,,,, 1.03, 0.97,,,,,,,,,,,,,,,,,,;

The tap size is actually controlled via the "Tap Positions" field. So with a tap range of 0.9 ~ 1.1, you have a range of 0.2. With each tap step of 0.00606, the number of tap positions is 0.2 / 0.00606 which is 33.

The current tap setting will either be "Winding 1 Ratio (pu)" or "Winding 2 Ratio (pu)" depending on your control settings. You can also use the "xfrdat" python routine from the psspy API to programatically retrieve the tap ratio for two winding transformers.

Here is a series of batch commands to add a 2-winding zero-impedance transformer between a hypothetical bus 1 and bus 2, as generated by PSSE. The winding 2 ratio is one tap off the nominal ratio, at 1.00606.

BAT_TWO_WINDING_DATA_6,1,2,'1',1,1,1,0,0,0,33,0,1,0,0,1,0,1,1,1,0.0, 0.0001, 100.0, 1.0,0.0,0.0, 1.0,0.0, 1.0, 1.0, 1.0, 1.0,0.0,0.0, 1.1, 0.9, 1.1, 0.9,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0," ",

BAT_TWO_WINDING_CHNG_6,1,2,'1',,,,,,,,,,,,,1,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,;

BAT_TWO_WINDING_CHNG_6,1,2,'1',,,,,,,,,,2,,,,,,,,,,,,, 1.00606,,,,,,,,,, 1.03, 0.97,,,,,,,,,,,,,,,,,,;