Such fault as mal-operation is happened occasionally due to excessive initial unbalanced current of neutral point in the actual operation of double star-shaped capacitor bank and the main reason is of unqualified initial balance of the capacitor bank.In this paper

a novel balancing algorithm for double star capacitor bank based on optimal targeting function is proposed.Firstly

the optimal targeting function is set up to determine the phase

series segment-number and optimal target-point of balance of each turn

accurate target is processed by the targeting function so to calculate a set of optimal balance strategy with purpose of achieving balance of capacitor bank.The practical program based on the balancing algorithm has been formed and applied in practice

which has achieved good results and verified the effectiveness and practical value of the algorithm.The algorithm has such characteristics as strong versatility

fast convergence speed and optimized replacement strategy and has a good application prospect.