2次元有限要素過渡解析手法を用いた高精度送電容量計算プログラムの開発

概要

論文の詳細を見る
Recently, the technology to examine the transmission capacity accurately from the viewpoint of effective use of the power equipment is requested. Therefore, Tokyo Electric Power Co. and the Japan Research Institute, Ltd. have jointly developed a new conductor temperature estimation program that makes use of the finite element method, as a tool for calculating at high precision the transmission capacity of a cable.This program newly incorporates seasonal changes in air and ground temperature, ground-surface boundary conditions for sunlight and radiation, and temperature changes in the depth direction. Heretofore it has been impossible to vary the load current, but this time it was possible to obtain more realistic simulation results than by the previous stationary-current analysis, by allowing transient-current analysis to which daily and seasonal fluctuations are added.In this report, we proposes the concepts of thermal analysis solver and ground level heat balance model which are basic specifications of program, and, we proposes technique to calculate two or more sections to analyze the movement of heat to lengthening joint of cable. And, we report that the effectiveness of the program was confirmed by the comparison verification of a long-term demonstration test result and the numerical analysis result.
社団法人電気学会の論文
2006-07-01