In the practical application of electromagnetic transient real-time simulation computing platform, due to the large amount of calculation and long calculation time of electromagnetic transient simulation calculation, in order to improve the calculation speed and accuracy, it is usually necessary to use multiple CPU cores for parallel calculation at the same time, and ensure that each task synchronization and coordination among the computing cores. So, it is of great significance to select an appropriate task synchronization method for the realization of the electromagnetic transient real-time simulation computing platform. The paper puts forward a kind of based on TSC (Time Stamp Counter) Time Stamp Counter polling Time slot task synchronization method, this method supports high precision Time synchronization and coordination between different tasks, and can adapt to the transmission and efficient processing of large amounts of data. The test results prove that this method can avoid the overhead and delay of a large number of interrupts and thread switching, improve the efficiency, stability and predictability of task execution, and meet the performance requirements of the task synchronization method based on the centralized tightly coupled electromagnetic transient real-time simulation prototype.
The accurate modeling of two-level VSC is of great significance for the real-time simulation of new power systems, and the modeling of its core component switch group has attracted more and more attention. Since traditional binary resistance models require time to "backtrack" to accurately locate the switching moment, interpolation is difficult to use for real-time simulation. In this paper, a two-level VSC real-time simulation modeling method based on controlled source compensation is proposed. This method combines the controlled source model with the binary resistance model, uses the binary resistance model to ensure the simulation accuracy when the switching state is constant, and introduces the controlled source model to compensate for the error caused by the delay of the trigger signal when the switching state is switched. According to the two-level VSC real-time simulation model realized by this method, while reducing the non-characteristic subharmonics, the admittance matrix can be pre-stored, which effectively reduces the model computing resource occupation, and is suitable for a variety of complex power electronic system modeling methods.
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