Method for the status estimation of the AC/DC mixed power system

The invention relates to a state estimation method which is used for alternating and directmix electrical power system. It belongs to the electrical power system movement and control technology area. The advantages of the invention are that mathematics inferential reasoning strict, the algorithm structure has explicit physics significance, the alternating and direct estimating equation formation and the solution mutually independent, the middle relation merely lies in when the iteration exchange the few data, has little amend to existing alternating-current system state estimation software, easy to realize, simultaneously also can satisfy the project request to estimate precision.