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1. Novel Coordinated Voltage Control For Hybrid Micro-Grid With Islanding Capability
ABSTRACT
This paper proposes a new coordinated voltage control (CVC) method with reactive
power management scheme (RPMS) for a hybrid micro-grid (MG). The CVC scheme, based on
synchronizing the response speeds of different voltage regulating devices, is coordinated with
novel RPMS. Two cases, with and without proposed CVC, were simulated in the power system
computer aided design (PSCAD)/electromagnetic transients including dc (EMTDC) environment
and compared against each other. The case with proposed CVC shows superior performance,
when tested for fault triggered islanding, intentional islanding, and MG internal fault. Further,
the proposed CVC with RPMS is compared to a voltage regulation method present in literature.
The proposed CVC with RPMS provides better voltage regulation, maximizes the fast dynamic
reactive power reserve, and improves the transient response and transient stability margin of the
hybrid MG.