Calculation of induced voltage in metal shield of single-core cable operated in parallel

The present paper proposes a method for calculating induced voltage in the shield of single-core cable with the basic theory of electromagnetic field. With this method, the induced voltage in metal shield of single-core cables operated in multi-circuit can be calculated. Take cables operated in double-circuit as an example, the influence of phase distance and arrangement of cables on induced voltage is analyzed. On this base, paper suggests proper phase distance and arrangement of cables should be chosen to reduce the induced voltage in metal shield.