POWER SYSTEM STABILIZER

• Main Authors: SHIMOO TAKAHIRO, ISHIHARA YUJI, KIMURA MISAO
• Format: Patent
• Language: English; Japanese
• Published: 18.06.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

To provide a power system stabilizer that can efficiently secure the stability of a power system by selecting a renewable energy power generator that reduces or stops the output.SOLUTION: A power system stabilizer 1 according to an embodiment includes a stability calculation unit 11 that calculates the stability for an assumed target accident case, an acceleration tendency synchronous machine extraction unit 12 that extracts one or more acceleration tendency synchronous machines 4, a sensitivity calculation unit 13 that calculates the deceleration sensitivity of the acceleration tendency synchronous machine 6 when the output amount of a renewable energy power generation device 6 is reduced by a first reduction amount P1, a renewable energy reduction amount addition unit 14 that determines the total reduction amount P3 of the output amount whose stability is determined to be stable in the extracted renewable energy power generation device 6, and a reduction target determination unit 15 that determines the renewable energy power generation device 6 that reduces the output amount.SELECTED DRAWING: Figure 1 【課題】出力量を減少または停止させる再生可能エネルギー発電装置を選択し、効率よく電力系統の安定性を確保することができる電力系統安定化装置を提供する。【解決手段】本実施形態によれば、電力系統安定化装置１は、想定される対象事故ケースに関する安定度を算出する安定度計算部１１と、1つ以上の加速傾向の同期機４を抽出する加速傾向同期機抽出部１２と、再生可能エネルギー発電装置６の出力量を第１の削減量Ｐ１で減少させた場合の加速傾向の同期機６の減速感度を算出する感度計算部１３と、抽出された再生可能エネルギー発電装置６の、安定度が安定と判断される出力量の削減総量Ｐ３を決定する再エネ減少量追加部１４と、出力量を減少させる再生可能エネルギー発電装置６を決定する減少対象決定部１５と、を備える。【選択図】 図１