Shunt Capacitors In The Power Grid Configuration Analysis

The loss of electric network is mainly in the network of intermediate voltage and network of low voltage. It is the main way to decrease in loss and improve benefit that shunt capacitor is used in reactive compensation. The mostly content of the thesis is disposition and optimization of Capacity and location.At the present time, where to set shunt capacitor is based on it where to benefit overhaul and running. The criterion is whether the voltage acheieves the national standard.It is based on engineering actuality and tries gaining more practical ways and program by linking theory with practice. It hopes to come to a sententious conclusion by optimizing location and capacity of reactive compensation.The main contributions of the thesis as follow:1) It introduces the three current ways and corrects the habitual errors in engineering at present. It sums up experience and puts forwards to disposing fundamentals .The software is programmed for different objective function by Visual FoxPro and has been used in practice.2) Linking the classical control theory with practice, it tries drawing a sententious and practical conclusion by optimization. Correctness is proved by emulation with Robust Toolbox of MATLAB.3) In view of the complicacy of the circuits, it optimizes reactive compensation by Equivalent area theorem and programs by C. It has been used in practice and gets good benefit.4) Considering the discreteness of reactive compensation and the influence by the cost, it introduces dynamic programming which belongs to optimum control of discrete systems into reactive compensation.