Current collection line inductive thunder overvoltage calculation and analysis method suitable for power plant

• Main Authors: ZHANG XIAOXUAN, YANG XI, CHEN XIN, LI RUDONG, HE WEIQIANG, MA RUILIN, ZHENG YARAN, XIAO XIN, LIAO YINGHUI, ZHANG ZIKUAN, HUANG ZHONGKE, YANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention provides a current collection line inductive thunder overvoltage calculation and analysis method suitable for a power plant. The method comprises the following steps: acquiring line calculation parameters of a collection sub-line, and establishing an inductive thunder overvoltage model in combination with electrostatic induction and electromagnetic induction modes; the inductive thunder overvoltage model is simulated and analyzed, and the damage condition of the comprehensive line is obtained; early warning is carried out on the damage condition of the comprehensive line exceeding the preset damage, and a line adjustment opinion is given in combination with a simulation result to serve as a first basis for lightning protection; the waveform of the induced thunder overvoltage is obtained based on the simulation result, waveform identification is carried out, and the lightning protection index of the target collector sub-circuit is judged based on the waveform identification result to serve as a s