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Realtime Simulation Platform
The real time simulation platform is based on PC technology running a Linux operating system and offers an underlying test bed for the study on smart grid. It consists of 4 target machines with a total of 8 CPUs, 48 cores, 4 Field-programmable Gate Array (FPGA) chips, and more than 500 analogue and digital inputs/outputs. Dolphin PCI boards are used to provide an extremely high speed and low latency real time communication link between target machines.
Electric Power System Simulation
With the technology of switch event interpolation, State Space Nodal (SSN) solver and parallel computation, the system provides an effective way to solve the real time simulation issues of smart grid caused by high speed and large numbers of switching devices.
In general, a switching frequency up to 10 kHz can be achieved, and a large number of switches can be included in one model at the same time. Moreover, the system allows ultiple users to be connected to the real time simulator concurrently to perform collaborative simulation, for which distributed control and HIL operation can be easily realized.
In the teaching lab, multiple students can work on the same model to explore the distributed control for a large power system, and different function modules can be added to the system by the students to showcase different scenarios, such as PV modules, wind turbine modules, short circuit modules, and motor drive modules, etc.
Communication System Simulation
When combined with a discrete network emulator, the real time simulation system can provide advantages to simulating communication network and distributed control in the smart grid in a cost effective manner. Such studies would allow identification of the influence of key communication factors to the smart grid, such as protocols, latency and bandwidth requirements, cyber security, and data management. The communication units are linked with the real time targets by an Ethernet connection. Relevant information (e.g. voltage, current, breaker status) is packaged and transferred to the control units which in turn will receive the package and traverse the information through a virtual communication network and back.
Introduction on the real time simulation and the platform
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Integrated smart grid simulation with both power and communication network
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