To calculate a stray current accompanying train service in a short period of time.SOLUTION: One of a representative stray current estimation system includes: a ground model creation part which inputs a resistance parameter concerning a rail and a structure and a ground around the rail, and creates a lattice-like resistance developed in at least a rail direction and a depth direction; an equivalent resistance creation part which creates an equivalent resistance equivalent to the lattice-like resistance; a train circuit calculation part which calculates a circuit model including a circuit element of a substation and a train and the equivalent resistance and obtains a circuit analysis result such as a current or a voltage to the equivalent resistance; and a stray current calculation part which calculates a circuit model giving the circuit analysis result of the equivalent resistance to the lattice-like resistance, and calculates the current flowing in the inside of the lattice-like resistance as a stray current.SELECTED DRAWING: Figure 1
【課題】短時間で電車運行に伴う迷走電流を計算する。【解決手段】上記課題を解決するために、代表的な本発明の迷走電流推定システムの一つは、レールおよびレール周辺の構造物や大地に関する抵抗パラメータを入力して少なくともレール方向と深さ方向に展開された格子状抵抗を作成する大地モデル作成部と、格子状抵抗と等価な等価抵抗を作成する等価抵抗作成部と、変電所および電車の回路要素と等価抵抗とを含む回路モデルを計算して等価抵抗に対する電流または電圧などの回路解析結果を得る電車回路計算部と、等価抵抗の回路解析結果を格子状抵抗に与える回路モデルを計算して格子状抵抗の内部を流れる電流を迷走電流として計算する迷走電流計算部とを備える。【選択図】図1
STRAY CURRENT ESTIMATION SYSTEM, STRAY CURRENT ESTIMATION METHOD, AND STRAY CURRENT ESTIMATION PROGRAM
迷走電流推定システム、迷走電流推定方法、および迷走電流推定プログラム
2020-08-13
Patent
Electronic Resource
Japanese
IPC: | B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
European Patent Office | 2020
|Engineering Index Backfile | 1960
|Stray current monitoring at Nuremberg subway
British Library Online Contents | 2004
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