DC de-icing is the most effective method for ice melting. At present

multiple structural types of DC de-icing devices have been put into practical operation. However

the de-icing device does not have either related standard or specification with specific requirement to the valve side voltage transformer configuration. In this paper

the configuration strategy of valve side voltage transformer of the fixed

mobile and SVC DC de-icing device is discussed respectively based on the current control principle of DC de-icing device. It is shown by the practical application that the fixed DC de-icing device cannot be equipped with the valve side voltage transformer;the mobile DC de-icing device and the SVC de-icing device shall be equippedwiththevalvesidevoltagetransformer.