MONITORING AND CONTROLLING DEVICE AND CONTROL METHOD FOR PHOTOVOLTAIC POWER GENERATION FACILITY

• Main Authors: ITO TOMOMICHI, KIKUCHI TERU
• Format: Patent
• Language: English; Japanese
• Published: 05.11.2020
• 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 monitoring and controlling device and a control method for a photovoltaic power generation system capable of stabilizing the system voltage by keeping a power factor at a power receiving point of a facility above a predetermined value while suppressing reverse power flow.SOLUTION: A monitoring and controlling device for a photovoltaic power generation facility in a consumer 90 that feeds power to a load 50 from a bus bar connecting an AC system and the photovoltaic power generation facility 20 includes: a calculation portion 1 that detects a state quantity for calculating a power factor of an interconnection point 80 between the AC system and the consumer and calculates a reactive power outputted from an inverter required to make the power factor of the interconnection point between the AC system and the consumer equal to or higher than a predetermined power factor based on the state quantity; and an inverter control portion 10 that controls the inverter with the reactive power as a reactive power command.SELECTED DRAWING: Figure 1 【課題】逆潮流を抑制しながら、設備受電点における力率を所定の値以上に保つことで系統電圧の安定化を図ることができる太陽光発電システムの監視制御装置及び制御方法を提供する。【解決手段】交流系統と太陽光発電設備２０を接続する母線から負荷５０に給電する需要家９０における太陽光発電設備の監視制御装置は、交流系統と需要家の連系点８０の力率を算出するための状態量を検出し、交流系統と需要家の連系点の力率を所定力率以上とするために必要なインバータの出力する無効電力を状態量に基づいて算出する演算部１と、無効電力を無効電力指令としてインバータを制御するインバータ制御部１０と、を備える。【選択図】図１