Interface-based simulation modeling method for standby diesel generator unit of nuclear power plant

Abstract

The invention provides an interface-based simulation modeling method for a standby diesel generator unit of a nuclear power plant. The method is characterized by comprising the following steps of building a GT-power simulation model of a diesel engine; building a Simulink simulation model of a speed regulating system and a load of a diesel engine generator; building a GT-power and Simulink joint simulation model; and establishing a graphic user interface (GUI), thereby finishing a joint simulation function through the GUI. By combining different advantages of two types of software, a loading process of the standby diesel generator unit of the nuclear power plant can be simulated; and by analyzing whether performance parameters such as a transient frequency and the like of the generator unit obtained by simulation meet design requirements or not, whether the design of a corresponding load program is reasonable or not is assessed.

Description

technical field [0001] The invention relates to a set design of a nuclear power plant backup diesel generator set, in particular to an interface-based simulation modeling method for a nuclear power plant backup diesel generator set. Background technique [0002] As the core part of the backup AC power supply in the nuclear power plant, the standby diesel generator plays an irreplaceable and important role in the defense-in-depth function of the third-generation nuclear power plant. When the normal and priority AC power is lost and the bus switching fails, the standby diesel generator provides AC power to the selected defense-in-depth load (permanent non-safety load), and loads all the required loads in batches within the specified time . Due to the large amount of equipment carried by the standby diesel generator set, it is impossible to carry out the real program load test in the design and manufacture stage, and it is difficult to detect and evaluate its transient charact...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used method for the loading simulation of standby diesel generator sets in nuclear power plants is to model the diesel engine based on the MATLAB platform. Many assumptions and simplifications are made for the working process of the diesel engine, and a large number of engineering experience data are relied on. It is difficult to accurately simulate various complex program belts. Changes of diesel engine characteristic parameters during loading

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