Abstract: The optimized load distribution model between units of Fujian Mianhuatan Hydropower Development Company Limited, which is based on the double layers increment dynamic planning method, was introduced. An objectoriented programming frame was established. An application software system, which is highly configurable, powerful and easy to use, was developed. The application software system had been used practically in power generation dispatch, and obvious economic benefit was obtained.

Key words: unit load, double layers increment dynamic planning model, software development, benefit analysis