期刊名称：International Journal of Early Childhood Special Education
电子版ISSN：1308-5581
出版年度：2022
卷号：14
期号：3
页码：3547-3556
DOI：10.9756/INT-JECSE/V14I3.437
语种：English
出版社：International Journal of Early Childhood Special Education
摘要：Nowadays, microgrid safety is a very challenging task for electrical engineers because the interconnection of DGs and the synchronization process are also difficult.In the proposed work, three DGs have different ratings. Solar and wind sources act as major sources and fuel cells act as a backup source. The transmission line voltage level 10.5 KV is used and it is connected to three-phase distribution power transformers. The developed three-phase voltages are giving to the loads. Phase-Locked Loop circuits (PLL) are used for the synchronization of three DGs with the main grid. Abnormal currents are produced due to the interconnectedness of distributed generations, which causes the complete damage of the microgrid. Resistive type Superconducting Fault Current Limiter (RSFCL) has many advantages when compared with circuit breakers, such as it provides continuity of supply, limits the abnormal currents within the first cycle and operating time is very less.RSFCL limits only fault current magnitudes, it does not compensate the voltage levels because of the existence of reactive components and voltage harmonics. If the microgrid comes into the stability state the following conditions must be satisfied such as, fault currents are to be limited, reactive power is to be compensated, voltage harmonics are to be reduced, voltage settling time is to be reduced and voltage levels are to be compensated at the load side. To satisfy the above conditions, fuzzy logic-based Series Active Power Filter (SAPF) is used along with RSFCL.
关键词：Series Active Power Filter (SAPF);Total Harmonic Distortion (THD);Resistive type Superconducting Fault Current Limiter (RSFCL);Circuit Breaker (CB);Distributed Generation (DG)
