A performance evaluation device for a power system stabilizer

Abstract

The invention relates to a performance evaluation device for an excitation regulator and a PSS (power system stabilizer) of the excitation regulator. The device has the following functions: acquired operating data of a generator and operating data of an excitation system are calculated and analyzed, according to control definite value parameters of a PID (proportion integration differentiation) control model of the excitation regulator and a PSS control model of the excitation regulator, PID and PSS evaluation models corresponding to the actual excitation system are established, and finally, the online monitoring and real-time performance evaluation are performed on the PID and PSS models of the excitation regulator. Under the condition that safe and stable operation of a generator set and a grid is not interfered, the device evaluates the performance of the PID and PSS models of the excitation regulator and solves the problem that the PID and PSS models are very difficult to predict and detect.

Description

technical field [0001] The invention belongs to the technical field of power generation equipment and relates to performance evaluation and diagnosis of power generation equipment, in particular to a PID and PSS model performance evaluation device for an excitation regulator. Background technique [0002] In recent years, the single-unit capacity and total installed capacity of generating units have been increasing, and the operation status of large-scale generating units will directly affect the stability and safe operation of the power system. The use of PID control of the excitation regulator can quickly overcome the generator terminal voltage disturbance, eliminate the disturbance residual error, reduce the overshoot, and improve the dynamic characteristics of the generator. The studies evaluated have no reported precedent. [0003] In order to suppress low-frequency oscillation, a PSS (power system stabilizer) control model is currently added to the excitation regulato...

AI Technical Summary

Problems solved by technology

However, the power low-frequency oscillation of large generator sets still occurs from time to time. How to confirm whether the PSS control model in the excitation regulator can effectively suppress the oscillation or whether it works when the power low-frequency oscillation occurs, and how to grasp the operation performance of the PSS model in real time still needs to be studied. few

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