Abstract
Due to the high penetration of distributed energy resources (DER) and emerging DER interconnection and interoperability requirements, fast and standardized information exchange is essential for stable, resilient, and reliable operations in microgrids. This paper proposes fast fault detection, isolation, and restoration (F-FDIR) for microgrid application with the IEC 61850 Generic Object Oriented Substation Event (GOOSE) communication considering the communication/system failure. GOOSE provides a mechanism for lightweight low latency peer-to-peer data exchange between devices, which reduces the restoration time compared to conventional client-server communication paradigm. The proposed mitigation method for the communication/system failure can find an available restoration scenario and reduce the overall process time. Hardware-in-the-loop (HIL) testbed is designed and implemented with real time digital simulator, microgrid control system, and protection and control intelligent electric devices (IEDs) for the validation. The experimental results show that the proposed F-FDIR and IEC 61850 models can enhance the reliability and interoperability of the microgrid operation and enable self-healing microgrids.
Highlights
Due to the high penetration of distributed energy resources (DER) and emerging DER interconnection and interoperability requirements, fast and standardized information exchange is essential for stable, resilient, and reliable operations in microgrids
Microgrids consist of many different types of devices that include protection and control intelligent electric devices (IEDs), sensors and DERs
Due to the bi-directional load flow characteristic of DERs integrated into microgrid structure, a conventional protection coordination scheme may not always be applicable
Summary
The DER supervisory control logical node defines the control actions for one DER unit or aggregations of one type of DER device with a single controller. This logical node provides settings for the operating mode at the electrical connection point. This LN shall be used for calculation of currents, voltages, powers and impedances in a three-phase system. The DER controller DRCS logical node defines the control status of one DER unit or aggregations of one type of DER device with a single controller
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