METHOD FOR ADJUSTING PARAMETERS OF CATHODIC PROTECTION OF UNDERGROUND PIPELINES

FIELD: construction; technological processes.SUBSTANCE: invention relates to corrosion protection of underground structures, in particular, to adjusting potentials of cathodic protection of sections of a protected structure. Method comprises assigning reference points in which the value of "pipe-earth" potential is determined, changing the cathodic protection parameters of each cathodic protection station, determining influence factors of each j-th station on the "pipe-earth" potential at each i-th reference point by the formula:, compilation of a system of linear equations of dependence of the potential at the reference point on current values of each of the stations, calculation of the current values of each station and setting the calculated current values at the output of the stations, wherein cathodic protection parameters of each station are changed without changing the current parameters of the remaining stations and, not allowing the transition of the "pipe-earth" potential at the reference points to the region of unacceptable values, wherein the potential "pipe-earth" value is measured after its stabilization, and the stationary potential at the reference points is determined by the formula: ϕ=ϕ- A⋅I- A⋅I-...- A⋅I, where ϕ- stationary potential at the i-th reference point, V, i=1; 2; ... k; ϕ- measured potential at the i-th reference point, V; A- coefficients of influence of the j-th station on the potential at the i-th reference point, Ohm; I- current value at the output of the station, A, j=1; 2; ... n; n - number of stations influencing the potential at the i-th reference point; k - number of reference points.EFFECT: reduced time for adjusting optimum parameters of operating conditions of the cathodic protection stations and constant maintenance of the potentials in the adjusted ranges.1 cl, 3 tbl, 2 dwg, 1 ex Изобретение относится к области защиты подземных сооружений от коррозии, в частности, к регулированию потенциалов катодной защиты участков защищаемого сооружения. Способ включает назначение контрольных точек, в которых определяют значение потенциала «труба-земля», изменение параметров катодной защиты каждой станции катодной защиты, определение коэффициентов влияния каждой j-той станции на потенциал «труба-земля» в каждой i-той контрольной точке по формуле:, составление системы линейных уравнений зависимости потенциала в контрольной точке от значений силы тока каждой из станций, расчет значений силы тока каждой станции и установку рассчита