PSS/E power system equivalent method based on engineering application

Abstract

The invention relates to a PSS / E power system equivalent method based on an engineering application. The method comprises orderly performed steady state equivalent and dynamic equivalent. The method comprises the following steps: firstly, optimizing an original equivalent function, and making a steady state equivalent result more in line with the parameter of an actual power grid and the need of an actual project; in the steady state equivalent, selecting a node needing to be reserved in the network according to a research emphasis; based on the steady state equivalent, performing dynamic data equivalent; firstly determining the type of an equivalent generator, calculating the electrical parameter of each equivalent generator through a weighted average method, and then performing short circuit current calculation to determine a rated capacity of the equivalent generator; selecting a generator control parameter, which has the largest contribution to the short circuit current in the network, as an initial control parameter of the equivalent generator; and finally, performing manual fine adjustment on the control parameter of the equivalent generator based on an empirical method, so that the equivalent simplification of the whole set of network data can be completed.

Description

technical field [0001] The invention relates to an equivalent calculation method for power system simulation analysis, in particular to an engineering application-based PSS / E power system equivalent method. Background technique [0002] Power system simulation analysis is one of the important methods to study the transient characteristics of power system. According to the different research angles, the simulation time and step size of the power system are also different, which can be divided into electromagnetic transient simulation, electromechanical transient simulation and medium and long-term dynamic simulation. Among them, the accuracy of electromagnetic transient simulation is the highest, but the simulation step size is small and the calculation amount is large. Especially due to the needs of the system, real-time simulation technology continues to develop, RT-LAB, RTDS and other real-time simulation tools based on electromagnetic transient simulation software are mo...

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Problems solved by technology

[0005] For the deficiencies in the prior art, the purpose of the present invention is to provide a PSS / E power system equivalent method based on engineering applications, which optimizes the PSS / E equivalent program, and solves the problem that the PSS / E equivalent program cannot Deal with the shortcomings of the DC system and reactive power compensation devices, and eliminate unreasonable parameters at the same time, making the system data more reasonable

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