In this paper

the structure feature of high voltage capacitor for AC/DC filter of HVDC project and capacitor imbalance protection principle capacitor are introduced firstly

and the drawback of conventional correction method of inherent initial imbalance current of the capacitor is pointed out. In accordnace with the consistency of the feature of LMS（least-mean-squares）adaptive filter and of physical feature of inherent imbalance current of H-type wiring capacitor bank

the specific achieving method of LMS adaptive filtering algorithum in the correction of inherent initial imbalance current of H type wiring capacitor bank is proposed. A set of effective LMS adaptive filter parameters is selected through simulation comparison and the effectiviness and instantaneity of LMS algorithum in the inherent initial imbalance current correction of capacitor bank are varified.