Excitation system PSS parameter setting method and device

Abstract

The invention provides an excitation system PSS parameter setting method and a device and belongs to the technical field of an excitation system. The method comprises steps that the uncompensated phase-frequency characteristic data of the excitation system is acquired; multiple sets of PPS parameters are acquired from a preset PSS parameter sample database, and multiple sets of PSS compensation angle data are respectively determined according to the multiple sets of PPS parameters; the multiple sets of PSS compensation angle data and the uncompensated phase-frequency characteristic data realize superposition at each frequency point position respectively, and multiple sets of compensation phase-frequency characteristic data are generated; the target compensation phase-frequency characteristic data in a value range of -120-60 DEG is acquired from the multiple sets of compensation phase-frequency characteristic data; PSS parameters corresponding to the target compensation phase-frequency characteristic data are determined to be to-be-used PSS parameters of the excitation system. According to the method, problems that PSS parameters acquired through a trial-and-error approach in the prior art are not more-optimized PSS parameters and the PSS parameter setting process is relatively more complex and tedious are solved.

Description

technical field [0001] The invention relates to the technical field of excitation systems, in particular to a method and device for setting PSS parameters of an excitation system. Background technique [0002] At present, with the development of the modern power system, the power system has the following characteristics: the connection between the power grids is weak, the transmission line distance is long, the system load is heavy, and the power grid is more dependent on the fast excitation system. These characteristics reduce the damping of the current power system, the power system is more prone to low-frequency oscillation, and the stable operation of the power system is easily affected. [0003] Power System Stabilizer (PSS for short) is currently the most effective measure to suppress low-frequency oscillations. In order to ensure that the PSS can work safely and reliably, the phase-frequency characteristic analysis and PSS parameter setting must be carefully carried ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a PSS parameter setting method and device for an excitation system to solve the problem in the prior art that it is difficult to determine the PSS parameters in an artificial trial and error manner to obtain more optimized PSS parameters, and the PSS parameter setting process is relatively cumbersome and complicated.

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