In MATPOWER, the power flow result for the contingency cases show that the generator sources violate their maximum reactive power limit but maintain their specified voltage magnitude. Whether it is possible or not to maintain the max. Reactive power limit? Theoretically, if a generator source in a PV buses crosses the reactive power limit, then we treat that bus as load bus. It is true or not ? If it is true, why the power flow result for the contingency cases show generator sources violate their maximum reactive power limit?
