DIGITAL PROTECTION CONTROLLER

• Main Authors: KIDO MITSUYASU, ESAKA YUTA
• Format: Patent
• Language: English; Japanese
• Published: 16.02.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

PROBLEM TO BE SOLVED: To preferentially store data having high priority in a memory.SOLUTION: A digital protection controller for protecting a power system is configured so as to comprise: a data temporary storage unit; a data preservation storage unit; a protection calculation unit for outputting a data preservation instruction for making temporary holding data in the data temporary storage unit be preserved in the data preservation storage unit; a priority determination unit for determining priority of the temporary holding data; and a preservation selection unit. The preservation selection unit is configured so that, when the data preservation instruction is output, the temporary holding data associated with priority of the temporary holding data is preserved in the data preservation storage unit in the case that a free space exists in the data preservation storage unit, the temporary holding data associated with the priority of the temporary holding data is preserved in the data preservation storage unit in the case that no free space exists in the data preservation storage unit and the priority of the temporary holding data is higher than that of preservation data in the data preservation storage unit, and the temporary holding data and its priority are not preserved in the case that no free space exists in the data preservation storage unit and the priority of the temporary holding data is lower than that of the preservation data. 【課題】優先度の高いデータを優先的にメモリに保存する。【解決手段】電力系統を保護するディジタル保護制御装置を、データ一時記憶部と、データ保存記憶部と、データ一時記憶部の一時保持データをデータ保存記憶部へ保存させるデータ保存指令を出力する保護演算部と、一時保持データの優先度を判定する優先度判定部と、保存選択部とを備えるように構成し、保存選択部を、データ保存指令が出力されると、データ保存記憶部に空きがある場合は、一時保持データと該一時保持データの優先度とを対応付けてデータ保存記憶部に保存させ、空きがない場合は、一時保持データの優先度がデータ保存記憶部の保存データより高い場合に、一時保持データと該一時保持データの優先度とを対応付けてデータ保存記憶部に保存させ、一時保持データの優先度が低い場合に、一時保持データと優先度とを保存させないように構成する。【選択図】 図２