PHOTOVOLTAIC POWER GENERATION SYSTEM

• Main Authors: ENDO TOMOKO, NAKAICHI JUN, ERICA MARTIN, OGURA RYO, BAI DING HU, UCHIDA TSUYOSHI, TAKEYAMA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 01.09.2023
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-REDRADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, E.G. USINGPHOTOVOLTAIC [PV] MODULES; SYSTEMS FOR STORING ELECTRIC ENERGY

To provide a photovoltaic power generation system capable of achieving both reduction in installation cost of breaker devices and improvement in safety, in a photovoltaic power generation system.SOLUTION: A photovoltaic power generation system comprises a string, an inverter, a first breaker device, and a second breaker device. The string includes a plurality of solar battery module groups. The first breaker device is connected with a first cable way connecting between the plurality of solar battery module groups. The second breaker device is connected with a second cable way connecting between the plurality of solar battery module groups. The first breaker device disconnects the plurality of solar battery module groups connected with the first cable way from each other depending on a first control signal from the inverter. The second breaker device is connected with the first breaker device so that bi-directional communication is possible, is driven by a power supplied from the first breaker device, and disconnects the plurality of solar battery module groups connected with the second cable way from each other depending on a second control signal from the first breaker device.SELECTED DRAWING: Figure 1 【課題】太陽光発電システムにおいて、遮断装置の設置コストの低減、及び安全性の向上を両立できる太陽光発電システムを提供する。【解決手段】太陽光発電システムは、ストリングと、インバータと、第１遮断装置と、第２遮断装置とを備える。ストリングは、複数の太陽電池モジュールグループを含む。第１遮断装置は、複数の太陽電池モジュールグループ同士を接続する第１電路に接続される。第２遮断装置は、複数の太陽電池モジュールグループ同士を接続する第２電路に接続される。第１遮断装置は、インバータからの第１制御信号に応じて第１電路に接続された複数の太陽電池モジュールグループ同士の接続を遮断する。第２遮断装置は、第１遮断装置と双方向通信可能に接続され第１遮断装置から供給される電力によって駆動し、第１遮断装置からの第２制御信号に応じて、第２電路に接続された複数の太陽電池モジュールグループ間の接続を遮断する。【選択図】図１