In the proposed method, the requirements of different customer connected to the distribution system are determined and measured by customer satisfaction degree, where, the direct and indirect economic losses caused by the power quality disturbances occurring in the distribution system can be determined by the customer satisfaction degree. By the help of customer losses, a high supply quality system programming model and method are developed. Considering the compatibility between power quality disturbances caused by distribution system fault and customer requirements, maximum entropy method is used. The proposed method is validated by a test system. The results have shown that the proposed method can insure the power supply quality with appropriate cost.