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Introduction

Welcome to the OpenHybridSim wiki!

Why hybrid simulation?

The last decade has seen a clear trend that more power electronic interfaced wind and PV systems are connected to power systems, coupled with a rapid development of HVDC and FACTS technology. More importantly, this trend is expected to continue, in a faster manner. From the perspective of power system simulation, this means a big challenge, as the existing positive-sequence transient stability simulation tools, e.g., PSS/E, PSLF,PSD-BPA, PSASP, are inherently inadequate in terms of modeling for simulating the fast dynamics of power electronic devices, while the EMTP type simulators still suffer from modeling scale problem when simulating large scale power systems even with the latest hardware and software technology. In addition, the availability of all the required data for full EMT simulation adds to the problem.

Fortunately, the combination of both, which is known as hybrid simulation, provides us an alternative and feasible approach to meet the challenge. In fact, the demand for EMT-TS hybrid simulation tool has been increasing in recent years along with the trend mentioned before.

Why OpenHybridSim?

Significant research efforts have been devoted to methods and techniques for interfacing the EMT and TS simulators and development of hybrid simulators. However, like other researchers or engineers who would like to utilize hybrid simulation in their research or applications, the developers of this tool could not find any publically available tool for hybrid simulation when they started a project that required hybrid simulation in 2012, which also became one of the major driving forces to make this project and the developed tool open source.

In addition, engineers in the industry tends to have an illusion that hybrid simulation is too complicated to be used in operation and planning. This tool is intended to make hybrid simulation application accessible to new users without much difficulty.

Students and researchers have taken advantage of open-source software in several areas of power system analysis, including electromagnetic transients. Therefore, we believe that the development of OpenHybridSim, as an open source tool for hybrid simulation, follows this trend and is an important addition to the suite of analysis tools. Now you have an open-source, well-tested tool to start with, and are able to extend it for your own applications without much difficulties.