CONTROL CIRCUIT PROVIDED BY REACTIVE POWER COMPENSATION DEVICE

To provide a technique for quickly returning a system voltage to a steady state when a rapid change occurs in the system voltage.SOLUTION: A control circuit is provided for a reactive power compensation device for controlling a system voltage of a power distribution system to be constant by controll...

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Bibliographische Detailangaben
Hauptverfasser:	MORI KYOHEI, TERASAWA TATSUYA, NAGIRA KAZUHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROLLING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	To provide a technique for quickly returning a system voltage to a steady state when a rapid change occurs in the system voltage.SOLUTION: A control circuit is provided for a reactive power compensation device for controlling a system voltage of a power distribution system to be constant by controlling an output voltage of an inverter circuit and supplying reactive power to the power distribution system. When a system voltage deviation that is deviation between a system voltage command value of the power distribution system and a system voltage detection value of the power distribution system exceeds a threshold value, a reactive current command value is configured to be calculated based on system impedance of the power distribution system.SELECTED DRAWING: Figure 2 【課題】系統電圧の急変動が生じたときに、系統電圧を定常状態へと高速で復帰させる技術が必要とされている。【解決手段】インバータ回路の出力電圧を制御して配電系統に無効電力を供給することにより前記配電系統の系統電圧を一定に制御する無効電力補償装置が備える制御回路であって、前記配電系統の系統電圧指令値と前記配電系統の系統電圧検出値の偏差である系統電圧偏差が閾値を超えたときに、前記配電系統の系統インピーダンスに基づいて無効電流指令値を算出するように構成されている。【選択図】図２