Calculation of the Electric Field and of the Parameters Of Controlled Self Compensating Power Lines 110 kV Line Using the Finite Volume Method

The paper studies the problem of calculating the electric field of the 110kV electric lines of CSCPL (Controlled Self Compensating Power Lines) type. The potential of electrical conductors is determined by a system of equations for voltages taking into account there phase shift at every moment of time. set of values of the voltages in the system, taking into account the phase shift of the voltage vectors in time. We dispose the possibilities that ensure to calculate the linear values of capacity and inductance of the line knowing the electric field characteristics for a given geometry. The electric line with the horizontal placement of wires is studied. The repartition of the electric field for the limited domain of a square with sides of 100x100 m, the edges of which have zero values of potential is determined. To obtain a numerical solution of Dirichlet formulated problem we will consider the domain as a set of small triangles. As the approximate solution of the formulated problem, we will consider the piecewise-defined function , which must be continuous in the domain and of linear nature on each triangle . To calculate the electric fields when changing the phase shifting angle for voltages of conductors displaced close to each other in the 0-1800 frequency band and of different values of discretization time on the period of fundamental wave of voltage, the method of finite volumes has been used. The results of numerical calculation of the character of repartition of the potential in the field of the line for different values of time and of a phase shift of the vectors of applied voltages to the conductors of close phases for the 110 kV line of CSCPL type have been showed.