Inverter islanding protection detection device and method

• Main Authors: HUANG DAN, TANG LI, CAO YOUXIA, ZHOU YONGGANG, QUAN JIAFENG, YOU JIA, ZHENG KANGZHEN, LIU DANHUA, DONG WENJIE, GAO YUAN
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses an inverter islanding protection detection device and method in the technical field of dust removal. The inverter islanding protection detection device comprises an alternating current sampling circuit, a relay circuit and an inverter outgoing line voltage detection circuit. The alternating current sampling circuit is responsible for collecting parameters such as voltage, current and power of a current power grid in real time, the relay circuit is responsible for disconnecting the power grid at a proper time and simulating power grid faults, and the inverter outgoing line voltage detection circuit is responsible for detecting output voltage of an inverter. As the alternating current acquisition circuit can only acquire the voltage signal of the power grid end, after the relay is disconnected, the power grid end is separated from the output end of the inverter, and at the moment, an independent voltage detection circuit is needed to detect the voltage signal of the inverter, so that whe