Optimal Power Flow Algorithm Based On Newton Method And Direct Decoupling Method Summary

With the rapid development of China’s social economy,China’s power demand is also increasing,and this makes the power system face higher requirements in terms of power supply capacity.For the power system,the distribution network is very important,it is a very important and critical link connecting users and the transmission grid.When analyzing the distribution network,the power flow calculation of the distribution network is the most basic part,and it is also a core basis for quantitative analysis of the economics,rationality and reliability of the planning design and operation mode of the distribution network system.This article focuses on the characteristics of distribution network power flow calculation.The R / X ratio of the distribution network is very large.If the fast decoupling method is used,there will be a problem of non-convergence,and its efficiency is not high.The distribution network system Generally,it has a large scale.If the Newton-Raphson method is used,the calculation amount will be very large and the calculation efficiency will be very low.In addition,it is also very sensitive to the initial value,so a new power flow calculation method is proposed.In this paper,the characteristics of the distribution network are first introduced,the current status of the distribution network is analyzed,and the commonly used calculation methods at this stage are analyzed.The rapid decoupling method is used to solve the problem of the distribution network,and The Newton-Raphson method is used to calculate the specific matrix.Through the comprehensive application of these two methods,the problems of too many iterations and slow convergence of Newton-Raphson method in the distribution network power flow calculation can be better solved,which can effectively promote the improvement of its calculation efficiency,and can also be very Solve the problem of non-convergence caused by the difference of the initial values.Then use the new optimization algorithm in the actual planning of the distribution network,analyze and summarize the current trend,predict that the distribution network load will increase in the next few years,determine whether the existing network can meet the development needs,propose an optimization plan,and finally verify the feasibility.Compare these methods through simulation analysis,and illustrate with examples: the superiority of the optimized power flow algorithm based on Newton’s method and direct decoupling method and in-depth test of the effectiveness of the program in the distribution network planning practice,in order to reduce the blind planning of distribution networks,help distribution network planners to better improve their decisionmaking ability and level,reduce risks and improve efficiency.