A Simulation Verification Method of Low Frequency Oscillation Controller

Abstract

The invention provides a simulation verification method for a low frequency oscillation controller, and the method comprises the following steps: determining an AC tie-line random power fluctuation characteristic index; building a random power model on a real-time simulation platform to simulate the AC tie-line random power fluctuation characteristic index; combining the random power model and a control system of an power system primary element to generate AC tie-line random power fluctuation; and performing simulation verification for the low frequency oscillation controller under the condition of AC tie-line random power fluctuation. According to the invention, a generator set or a DC transmission system is conveniently adopted, so that the generator set or the DC transmission system becomes a AC tie-line random power fluctuation source, and the random power fluctuation is added on the AC tie line; the method is beneficial to verify the reliability of various AC tie-line power fluctuation restraining low frequency oscillation controller designs, so that the designs can be effectively applied to an actual power system.

Description

technical field [0001] The invention relates to a simulation verification method, in particular to a simulation verification method of a low-frequency oscillation controller. Background technique [0002] With the rapid development of the power grid, many new control theories and control algorithms have emerged to intelligently and efficiently control the security and stability of the increasingly complex and huge power grid. Before these new control algorithms are applied to engineering practice, it is usually necessary to use a digital-analog hybrid real-time simulation device for simulation tests to verify the reliability and effectiveness of the algorithm to ensure the smooth implementation of the actual project. [0003] In the early stage of large-scale synchronous power grid construction, many control algorithms emerged to suppress the power fluctuation of AC tie lines across large regions. The feasibility and effectiveness of these control algorithms are generally s...

AI Technical Summary

Problems solved by technology

In this way, during the entire process before and after the fault, there is no random power fluctuation on the entire grid or AC tie line, that is, there are only power fluctuations caused by the set fault in the grid, which is an ideal test condition

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