Grid simulation real-time parallel computing platform based on MPI (Multi Point Interface) and application thereof

Abstract

The invention provides a grid simulation real-time parallel computing platform based on MPI (Multi Point Interface), belonging to the power system simulation field. Based on inducing a real-time operation system RTLinux, the invention provides a method for constructing the grid simulation real-time parallel computing platform through modifying an upper layer grid simulation computing application module, an MPICH parallel environment and GM software in real time, so that real-time parallel simulation computing with strict step length is provided for a large-scale power system, the frequency and the amplitude of step length time jitter are reduced, and faster-than-real-time and hard real-time dynamic simulation to the power system is ensured.

Description

technical field [0001] The invention belongs to the field of electric power system simulation, and in particular relates to the hard real-time problem in parallel calculation of power grid simulation based on MPI (Message Passing Interface, message passing interface). Background technique [0002] At present, the scale of my country's power grid interconnection continues to expand, the country's large regions are gradually connected to the Internet, and the market-oriented power trading leads to changing operation modes. These complex power grid situations require us to establish a simulation test environment similar to the actual power grid. If the simulation process is synchronized with the actual operation process of the power system, it is called real-time simulation. At this time, the actual devices of the power system (such as relay protection devices, excitation regulators, etc.) can be connected to the simulation system for closed-loop tests to detect the operating ch...

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Problems solved by technology

However, because the Linux operating system itself is a time-sharing system, its scheduling algorithm, uninterruptible system calls, interrupt masking, device drivers, and use of virtual memory lead to unpredictability of system time, although parallel computing can ensure that the overall simulation process is equal to or It is faster than the actual physical process, but it does not guarantee that the simulation process of each step is exactly equal to or faster than the actual physical process. The non-real-time characteristics of the Linux system itself will cause time jitter at the millisecond level of the simulation step. Time jitter affects the simulation of all subsequent steps, so it is difficult to achieve a dynamic hard real-time simulation process within a strict step time (the typical value of electromagnetic transient simulation is 50us), and it cannot guarantee that the real-time simulation is strictly synchronized with the system running time or even super real-time In order to calculate and analyze the occurrence of large power grid accidents, and then gain time for the prevention and control of the power grid

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