A hardware-accelerated parallel multi-rate electromagnetic transient real-time simulation method for converters

Abstract

The invention relates to the technical field of power system simulation, and discloses a hardware-accelerated parallel multi-rate electromagnetic transient real-time simulation method of a converter. Initialized parametric constant admittance model modeling; step 2 realizes the cross-platform decoupling of the converter electrical system and control system solution process; step 3 pre-stores the converter model matrix in FPGA; step 4 is on the host computer Start the parallel simulation and predict the switch state at the next big step; step 5, the FPGA side analyzes the switching state calculation result of the host computer side and solves the electrical state at the current moment in parallel with step 4; step 6, the host computer side reads the FPGA side. The electrical state solves the results and updates the simulation time. The invention is applied to the FPGA-based hardware acceleration simulation scenario of the converter model, effectively reducing the error in the multi-rate decoupling calculation process of the control system and improving the accuracy of real-time simulation.

Description

technical field [0001] The invention relates to the technical field of power system simulation, in particular to a hardware accelerated parallel multi-rate electromagnetic transient real-time simulation method of a converter. Background technique [0002] Since the 1950s, the theoretical research and manufacturing technology level of power electronic technology has been continuously improved, and power electronic devices have been greatly developed in terms of capacity and type. With the further application of large-capacity flexible DC transmission and flexible AC transmission in my country's power grid, as well as the large-scale access of microgrids and renewable energy in the power grid, the degree of power electronics in modern power systems has been continuously improved. The analysis of transient process is more complicated, and it is difficult for traditional transient simulation methods to achieve real-time simulation under the premise of ensuring accuracy. In parti...

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Problems solved by technology

Domestic research teams including China Electric Power Research Institute, Tianjin University, Shanghai Jiaotong University and other research institutions have achieved certain results in the application of FPGA to realize small-step electromagnetic transient simulation with converter models, but still need to solve the problem in the modeling process. It is difficult to balance model accuracy and storage space, high FPGA resource occupancy rate, network control strategy and system parameter adjustment process are not flexible enough, etc.

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