VEHICLE BODY POTENTIAL MEASURING SYSTEM AND VEHICLE BODY POTENTIAL MEASUREMENT METHOD

To provide a vehicle body potential measuring system which can quantitatively evaluate a vehicle body potential variation characteristic, and can detect a performance change of a high-voltage system including variation countermeasures.SOLUTION: In a vehicle body potential measuring system of a railway vehicle, the railway vehicle has a high-voltage busbar for distributing overhead line power to an on-vehicle device which is mounted to the railway vehicle, and a high-voltage blocker for connecting or disconnecting an overhead line and the high-voltage busbar. The vehicle body potential measuring system has: a voltage acquisition part for acquiring a voltage with the vehicle body potential of the railway vehicle as a reference; a voltage phase acquisition part for acquiring a voltage phase of the overhead line; a storage part for storing data; and a processing part for storing the data into the storage part. The processing part stores the voltage data acquired by the voltage acquisition part into the storage part by making it associated with the voltage phase of the overhead line when the high-voltage blocker is operated.SELECTED DRAWING: Figure 1 【課題】簡易な構成で、車体電位変動特性を定量評価し、変動対策を含めた高電圧系統の性能変化を検出可能な車体電位計測システムを提供する。【解決手段】鉄道車両の車体電位計測システムであって、鉄道車両は、鉄道車両に搭載された車上装置に架線電力を分配する高電圧母線と、架線と高電圧母線とを接続又は遮断する高電圧遮断器と、を有し、車体電位計測システムは、鉄道車両の車体電位を基準とした電圧を取得する電圧取得部と、架線の電圧位相を取得する電圧位相取得部と、データを格納する記憶部と、記憶部へのデータの格納を行う処理部と、を有し、処理部は、電圧取得部が取得した電圧データを、高電圧遮断器が動作したときの架線の電圧位相と関連付けて記憶部に格納する。【選択図】図１