Studies for interaction of power electronics from multiple vendors in power systems

Controllers of power electronic interfaced devices (PEID) and their design give a wide variety of control options to fulfill a desired response. Although all these options are parametrized to be stable by themselves, they can interact with other equipment in the transmission system.

Therefore, interactions studies need to be performed to identify the risk of interactions and, if a risk is identified, to redesign the control parameters. To do so, an appropriate representation of involved equipment is needed. Currently, interaction studies involve mainly interactions between converters and passive elements or converters and generators. With the increase of power electronic devices (e.g. HVDC transmission, wind power plants and FACTS) in the transmission system, interaction studies also need to consider interactions between power electronic devices.

In case these devices are from different vendors, no common procedure is defined yet. This document describes general interaction phenomena and the required tools to perform interaction studies.

Furthermore, it defines which models are needed and depicts a proven workflow for multivendor interactions studies.

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