INDIRECT TEMPERATURE CONTROL METHOD FOR OVERHEAD POWER TRANSMISSION LINE CONDUCTORS Russian patent published in 2000 - IPC

FIELD: power engineering. SUBSTANCE: in order to prevent conductor burnout during deicing operations on power transmission lines, line currents are measured at minimum three time moments t₁,t₂,t₃ and measurement results are used to compute parameters of mathematical model of exponential conductor with time constant τ of heated-conductor temperature increase from initial value at time moment t₀ to steady state value. Measuring voltage drop across line at time moments t₁,t₂,t₃ including measurements made within time interval not over two estimate values of τ from moment t₀, and using thus measured currents and voltages in calculating conductor temperature by numeric method have enabled automatic inclusion of impact of uncontrolled factors on heat balance of conductor. EFFECT: reduced temperature measurement error brought in due to atmospheric factors. 5 cl, 1 dwg