Performance evaluation device for excitation regulator and PSS (power system stabilizer) of excitation regulator

A technology of excitation regulator and power system, which is applied in the direction of controlling generators, instruments, data processing applications, etc. through changes in the magnetic field, to achieve the effect of ensuring safe and stable operation

Active Publication Date: 2015-09-30
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1
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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 supp

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  • Performance evaluation device for excitation regulator and PSS (power system stabilizer) of excitation regulator
  • Performance evaluation device for excitation regulator and PSS (power system stabilizer) of excitation regulator
  • Performance evaluation device for excitation regulator and PSS (power system stabilizer) of excitation regulator

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[0027] Hereinafter, the present invention will be described in detail with reference to the drawings and typical embodiments.

[0028] The following description takes 1 unit of a thermal power plant as the implementation object, which is only exemplary and should not be understood as limiting the scope and application of the present invention. The details are as follows: figure 1 It is a schematic diagram of the structure of the performance evaluation device of the present invention. figure 1 , The data acquisition and preprocessing module collects generator operating data and performs data processing through hard-wiring. The generator operating data includes generator terminal 3-phase voltage, 3-phase current and 3-phase voltage on the low-voltage side of the excitation transformer; The excitation system operation data is collected and processed through the network and communication methods. The excitation system operation data includes the three-phase current of the low-voltage s...

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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...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06H02P9/14
Inventor 李小军艾志虎李永忠李福龙肖永任勇林呈辉刘静芳潘华姚志昕
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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