Electrical/control system decoupling prediction method suitable for transient parallel simulation of micro-nets

Abstract

The invention discloses an electrical / control system decoupling prediction method suitable for the transient parallel simulation of micro-nets, and the method provided by the invention comprises the following steps: modeling a primary system of a system to be researched, and then modeling a secondary system and a distributed power supply of the system to be researched; reading the basic information, topological connection relation and component parameters of each component; obtaining the number np of simulation tasks; Creating np computational threads or processes according to the number np of the simulation tasks; enabling the simulation time to be pushed ahead a step size, wherein t=t+delta t; carrying out communication between the computational threads or processes; carrying out simulation task assignment according to the number of CPUs (central processing units) in a microcomputer and the number of the simulation tasks, and completing all calculation tasks at the simulation moment; and judging whether the simulation time reaches the final simulation moment, if so, releasing the memory, and then completing the simulation. By using the method disclosed by the invention, the parallel computing solution of EMTP (electromagnetic transients program) electric systems and control systems can be realized; and through cooperating with the self-decoupling dimensionality reduction method of the electrical systems and control systems, the method can be used for effectively improving the simulation calculation speed.

Description

technical field [0001] The invention relates to a simulation of a power system. In particular, it relates to an electrical and control system decoupling prediction method suitable for parallel simulation of microgrid transient state, which is suitable for electromagnetic transient simulation program based on node analysis framework. Background technique [0002] As an important means of power system analysis, design and scientific research, power system digital simulation has many advantages such as not being limited by the size and complexity of the prototype system, safety, economy, convenience, etc., so it has been widely used. Power system electromagnetic transient simulation is an important part of power system digital simulation. It is mainly used to simulate the fast dynamic process above power frequency in the system. It has the characteristics of accurate description of phenomena, wide application, and good numerical stability. Electromechanical transient simulatio...

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Problems solved by technology

However, the main problem of the above method is that due to the time delay of the input electrical quantity when the control system is solved, some local transient characteristics in the transient simulation results cannot be well reflected, and the calculation accuracy is lower than that of the traditional serial calculation sequence. lower

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