Abstract
In order to expand the simulation scale of the real-time digital solver based on FPGA (FRTDS, FPGA: field-programmable gate array), the power system modeling process is optimized. The multi-valued parameter method is used to represent the external characteristics of the equipment. The methods of addressing the equivalent admittance and voltage coefficient of the interval unit are discussed in detail. The serial degree of the simulation script is effectively reduced. The disadvantageous effects of asymmetric elements and nonlinear elements on node elimination are analyzed. The elimination order of nodes is determined according to the minimum estimate of the execution time of the simulation script. According to the proposed method to reduce the serial degree and calculation time of the simulation script, software for generating an electromagnetic transient simulation script for power systems is developed. The effectiveness of the software is verified by an example.
Highlights
The analysis of power system simulations is the basis of the design and scheduling of power systems
Power system simulation script generation software is designed in this paper in order to promote the engineering application of FRTDS
Directed acyclic graph (DAG) that describes the dependent relation expressions generated based the application of multi-valued parameters, the values of some of parameters canisbe gained from tables, on the simulation scripts, and the tasks are scheduled according to the directed acyclic graph (DAG), and orders are the which greatly alleviates the burden of calculation on the components and effectively reduces generated
Summary
The analysis of power system simulations is the basis of the design and scheduling of power systems. Devices for real-time digital simulation mainly include real-time digital simulators (RTDS) and real-time labs (RT-LAB), and these devices are all multi-core-based parallel processing systems. An alternating current/direct current split parallel algorithm, which lays the foundation for solving the electromagnetic transient real-time simulation of the high-voltage direct current transmission system, was proposed by means of the node splitting method and long-distance transmission line decoupling method [7]. Power system simulation script generation software is designed in this paper in order to promote the engineering application of FRTDS. This software sorts the simulation models of commonly used equipment in power systems into classes and generates the simulation script automatically after receiving parameters for each equipment from users.
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