Simulation platform of mmc system based on fpga

Abstract

The embodiment of the present invention relates to the technical field of flexible direct current transmission simulation technology, and discloses a simulation platform of an FPGA-based MMC system. It includes: host computer, CPU emulator, FPGA emulator, and external control or protection device of the MMC system; the host computer, CPU emulator, and FPGA emulator are connected in sequence, and the FPGA emulator is also connected to the external control or protection device by communication; the host computer It is used to build the system simulation model of the MMC system, and is used to transmit the system simulation model to the CPU simulator and the FPGA simulator respectively; the system simulation model includes all primary equipment simulation models and converter valves of at least two converter stations of the MMC system simulation model and pole control or station control simulation model; the host computer is also used to control the CPU emulator to run the pole control or station control simulation model, and to control the FPGA emulator to run all primary equipment simulation models and converter valve simulation models in real time to Realize hardware-in-the-loop testing of external control or protection devices. The invention can realize real-time simulation and hardware-in-the-loop test of traveling wave protection.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of flexible direct current transmission simulation technology, in particular to a simulation platform of an FPGA-based MMC system. Background technique [0002] With the development of large-capacity long-distance flexible DC transmission technology, in order to ensure the safe and efficient operation of the DC transmission system, any short circuit on the DC line, whether it is a metallic short circuit or a high-resistance grounding short circuit, should be promptly and accurately detected. detection and removal. Taking traveling wave protection as the main protection of HVDC (High-Voltage Direct Current,) system DC line protection conforms to the fault characteristics of HVDC transmission line and has absolute advantages. Therefore, it is very important to choose an appropriate testing method for traveling wave fault protection locating device. [0003] The verification of exist...

AI Technical Summary

Problems solved by technology

[0005] The inventor found that there are at least the following problems in the prior art: currently, in offline simulation, the model cannot be connected with the actual device, and half-physical testing cannot be performed

The main circuit of the real-time simulation platform based on CPU+FPGA runs in the CPU, and the simulation step size is relatively large. The built model cannot accurately simulate the traveling wave characteristics of the line at the fault time, and cannot achieve a comprehensive in-the-loop test of the traveling wave fault location device.

Images