/** partial derivative of to-side reactive power w.r.t from-side voltage angle */
public float getdTQdFVa() {
return _list.getdTQdFVa(_ndx);
}
/** partial derivative of to-side reactive power w.r.t from-side voltage angle */
public float getdTQdFVa() {
return _list.getdTQdFVa(_ndx);
}