Hello. I need to simulate a power system including conventional generators, loads and wind farm. I want to measure system frequency and voltage esspecially. According to these values for any kind unwanted of voltage and frequency changes circuit breaker should be opened and wind farm will be disconnected from the grid. But I could not find a kind of simulation program or I do not know how to do it with MATLAB and PowerWorld. How can I simulate the system? Which program should I use?