Active islanding detection method for inverter-based distribution generation power system |
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| Affiliation: | 1. Jinhua Polytechnic, Jinhua 321017, China;2. School of Computer Science and Engineering, Northeastern University, Shenyang 110819, China;3. School of Accountancy, Guangdong Polytechnic Normal University, Guangdong 510665, China;1. Egypt-Japan University of Science and Technology (E-JUST), 21934, Alexandria, Egypt;2. Electrical Engineering Department, Faculty of Engineering, Kafrelshiekh University, 33516, Kafrelshiekh, Egypt;3. Electrical Engineering Department, Faculty of Engineering, Mansoura University, 35516,Mansoura, Egypt;4. Graduate School of Information Science and Electrical Engineering, Kyushu University, Nishi-ku, 819-0395, Fukuoka Japan;1. Department of Electrical and Computer Engineering, São Carlos School of Engineering, University of São Paulo, São Carlos 13566-590, Brazil;2. Department of Electrical Engineering, Federal University of São Carlos, São Carlos 13565-905, Brazil |
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| Abstract: | A novel islanding detection method for an inverter-based distribution generation power system is proposed in this paper. The inverter-based distribution generation power system includes a dc power source and a grid-connected DC/AC inverter. The grid-connected DC/AC inverter acts as a virtual capacitor as the frequency is slightly lower than the fundamental frequency of utility voltage. Since only the inverter-based distribution generation power system supplies power to the load as the utility power interruption occurs, the virtual capacitor operation of the inverter-based distribution generation power system will result in the change of load voltage in amplitude or frequency. Hence, the proposed method can immediately detect the islanding operation. |
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