Method for detecting maximum current-carrying capacity of transmission conductor of high-voltage transmission line

• Main Authors: LIANG YONGCHUN, LI PENGYUN, QI BO, KONG JIANLIANG, CHENG YANGCHUN, DAI YUAN, ZHAN HUAMAO
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2012
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a method for detecting maximum current-carrying capacity of a transmission conductor of a high-voltage transmission line. The method comprises the following steps of: 1) erecting a reference conductor nearby the transmission conductor, wherein the reference conductor and the transmission conductor are arranged in parallel with a certain interval, the diameter and surface conditions of the reference conductor are consistent with those of the transmission conductor, and the reference conductor and the transmission conductor are subjected to the same solar radiation; 2) loading current on the reference conductor to heat the reference conductor, measuring the current value Ij when the temperature reaches 70 DEG C, and transmitting the current value Ij to a substation; and 3) receiving the current value Ij through a main engine of the substation, and calculating the real-time maximum current-carrying capacity of the transmission conductor according to a current proportioning relationship be