Development and application of distribution network comprehensive analysis system

Through a system study of the fundamental theories of distribution network analysis, operation optimization and network architecture assessment, including static security analysis theory, power flow calculation method, state estimation technique, network optimization method, fault isolation and recovery algorithm, and reactive power optimization algorithm, etc, a graphic distribution network analysis system was developed. Feeder renovation and sectionalization is determined by using the “User Loss Vs Load Loss” charts with both economy and reliability taken into consideration. Interpolation method is used to work out an optimal reactive power compensation capacity, enhancing computational speed. Vector data layering and blocking technique increases the processing speed of the graphic system. The system has been applied in over ten power utilities, and proved effective and helpful.