Goldwind Microgrid Relay Protection

Are multifunction protective relays a good choice for Microgrid controls?

Multifunction protective relays are an economical choice for microgrid controls because the hardware is commonly required at the point of interface (POI) to the electric power system (EPS) and at each distributed energy resource (DER). The relays at the POI and DER provide mandatory protection and human safety.

Why do microgrids need relays?

The relays at the POI and DER provide mandatory protection and human safety. The cost, complexity, and commissioning efforts of microgrids are reduced by consolidating more control functionality into the relays.

Can dual-setting overcurrent relays be used in a microgrid test system?

Thus, the proposed protection scheme using dual-setting overcurrent relays also provides the common optimal relay settings for larger test system such as the 18-bus microgrid test system which can be used in both operating modes.

Do microgrid relays perform well in macrogrids?

Although years of operation in macrogrids support these relays, their performance for microgrids is yet to be analyzed. This paper presents such analysis for different relay types by considering various fault and generation conditions in a microgrid.

Can a voltage based relay protect micro-grids dominated by embedded generation?

Al-Nasseri, H. & Redfern, M. A., A new voltage based relay scheme to protect micro-grids dominated by embedded generation using solid state converters, in Proceedings of 19th international conference on electricity distribution.

Can a microgrid protect against a non-adaptive overcurrent?

In non-adaptive overcurrent protection of AC microgrids, optimum setting of DOCRs are obtained with the ability to coordinate properly in both islanded and grid-connected modes. In , protection coordination of microgrid with islanded and grid-connected modes of operation has been discussed.