DETERIORATION POSITION MEASUREMENT METHOD OF SUPERCONDUCTIVE CABLE RAIL TRACK

• Main Authors: MASUDA TAKAHITO, TATAMIYA KAZUAKI
• Format: Patent
• Language: English; Japanese
• Published: 19.05.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TESTING

PROBLEM TO BE SOLVED: To provide a deterioration position measurement method of a superconductive cable rail track capable of accurately measuring an insulation deterioration position of a superconductive conductor.SOLUTION: A deterioration position measurement method of a superconductive rail track including a plurality of superconductive conductors having a superconductive conductor layer includes: a circuit forming process of forming a loop by short-circuiting one ends of a sound phase and an accident phase, connecting in series a first resistance and a second resistance as a ratio arm resistance between other ends and forming a Wheatstone bridge by connecting a galvanometer, and connecting an AC source to a contact point of the first resistance and the second resistance; an AC power conduction process of conducting an AC current from an AC power source; and a deterioration position measurement process of adjusting a ratio arm resistance, obtaining a ratio of the second resistance to a total resistance of the first resistance and the second resistance when an equilibrium condition in which a current flowing through the galvanometer is zero is satisfied, and measuring the deterioration position of the accident phase based on this resistance ratio.SELECTED DRAWING: Figure 2 【課題】超電導導体部の絶縁劣化位置を精度よく測定できる超電導ケーブル線路の劣化位置測定方法を提供する。【解決手段】超電導導体層を有する超電導導体部を複数備える超電導ケーブル線路の劣化位置測定方法であって、健全相と事故相との一端同士を短絡してループを形成し、他端間に比例辺抵抗として第１抵抗と第２抵抗とを直列に接続すると共に検流計を接続してホイートストンブリッジを形成し、第１抵抗と第２抵抗との接点に交流電源を接続する回路形成工程と、交流電源から交流電流を通電する交流通電工程と、比例辺抵抗を調整して、検流計に流れる電流がゼロとなる平衡条件を満たすときの第１抵抗と第２抵抗との合計抵抗に対する第２抵抗の比を求め、この抵抗比に基づいて事故相の劣化位置を測定する劣化位置測定工程と、を備える超電導ケーブル線路の劣化位置測定方法。【選択図】図２