This paper refers to the requirements of railway girder stiffness of various countries,and considers its dynamics characteristic,produced the form of the track irregularity and also the variable bound.

The results of energy saving are analysed and calculated to high voltage circuit and main transformer after installing inefficiency power compensation apparatus.

Method of setting public transport routes;

Research purposes: Through making analyses of the landform and geological conditions in the valley zone,the principle of route selection is decided for the purpose of providing basis for the route selection.

It will be significant in design of the tunnel route selection.

Research on the railway line trend in Mongolia;

Influence of zero-sequence mutual inductance of the same pole parallel laying line on zero-sequence current protection;

Research on preventing icing flashover on transmission line insulators;

Study on least approaching distances between ±800 kV DC transmission line and 1 000 kV AC transmission line in a hybrid corridor;

Utilization and study of transmission line protection communication channel in South Hebei electric power network;

A study on proper determination of class of repairs for heavy haul fast railway line;

Starting with an analysis of the dynamics parameters of train running-a major factor influencing the plane technical condition of railway line,a preliminary study was conducted on the plane curve radius condition of high-speed maglev based on the characteristics of TR high-speed maglev system.