Design method of transient real-time simulation system for active distribution network based on fpga

Abstract

The invention relates to an active power distribution network transient state real-time simulation system designing method based on an FPGA. The active power distribution network transient state real-time simulation system designing method can be implemented in an off-line simulation environment and an on-line simulation environment in a dividing mode, the off-line simulation environment is responsible for calculating the total clock period number-n<total> and simulation using time-t<total> calculated in each time step, the simulation step size deltat is set according to the real-time simulation using time-t<total>, relevant parameters calculated according to the simulation step size deltat and the read basic parameter information are uploaded to the on-line simulation environment based on the FPGA. Real-time simulation calculation is completed in the on-line simulation environment, the simulation state is controlled through a finite-state machine, each time step includes the steps of historical item current source column vector calculation of all elements, total historical item current source column vector formation of the elements and linear equation system solving and updating of the elements, and the historical item current source column vector calculation step of the elements and the updating step are completely independent and can be processed in a concurrent mode. According to the active power distribution network transient state real-time simulation system designing method based on the FPGA, the real-time performance of the transient state simulation process of the whole system is guaranteed, and the good feasibility and the good applicability are achieved.

Description

technical field [0001] The invention relates to a power system simulation design method. In particular, it relates to a design method of an FPGA-based transient real-time simulation system for an active distribution network. Background technique [0002] Active distribution network transient real-time simulation is a digital simulation method that is synchronized with the real clock. By connecting the real-time simulator with actual physical equipment, the development and testing of various control and protection devices can be carried out, and it can simulate lighting, The complex transient process of the active distribution network under various operating scenarios such as wind speed changes, voltage drops, short-circuit faults, and load shedding can effectively reduce the cost of research and development and testing, and avoid the impact of the equipment under test on the actual system. Active distribution network transient real-time simulation is mainly used for distrib...

AI Technical Summary

Problems solved by technology

FPGA essentially has a fully configurable inherent hardware parallel structure, and its logic resources can be configured as many parallel processing units to achieve multi-level highly parallel computing; at the same time, FPGA chips have a large number of embedded block RAMs, which can be configured as a large number of distributed ROMs Or RAM, its data and address width, and the number of ports can be configured, while the memory and bus in traditional real-time simulators are mostly shared, and the ports are limited, which limits the efficiency of data transmission; FPGA allows the use of pipeline technology, which strengthens data processing Efficiency, and FPGA also has a large number of internal connections with extremely fast transmission speeds, which will not introduce excessive communication delays

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