/** partial derivative of to-side reactive power w.r.t to-side voltage angle */
public float getdTQdTVa() {
return _list.getdTQdTVa(_ndx);
}
/** partial derivative of to-side active power w.r.t. from-side voltage angle */
public float getdTPdFVa() {
return _list.getdTPdFVa(_ndx);
}
/** partial derivative of to-side reactive power w.r.t. from-side voltage magnitude */
public float getdTQdFVm() {
return _list.getdTQdFVm(_ndx);
}
/** partial derivative of to-side active power w.r.t. to-side voltage magnitude */
public float getdTPdTVm() {
return _list.getdTPdTVm(_ndx);
}