Parameter adaptability testing method for PSS (Power System Stabilizator) of grid system

An adaptive testing and power system technology, applied in the field of electrical engineering, can solve problems such as technical solutions that have not appeared, and achieve accurate and rapid adaptability

Active Publication Date: 2013-01-16
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there has not been a technical solutio

Method used

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  • Parameter adaptability testing method for PSS (Power System Stabilizator) of grid system
  • Parameter adaptability testing method for PSS (Power System Stabilizator) of grid system
  • Parameter adaptability testing method for PSS (Power System Stabilizator) of grid system

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Experimental program
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Embodiment Construction

[0024] Embodiments of the present invention provide a method for testing the adaptability of parameters of a grid power system stabilizer, which can effectively measure the adaptability of parameters of the power system stabilizer.

[0025] "Power system stabilizer (PSS)" is to provide additional excitation for the generator, so as to enhance the damping of the system when oscillation occurs. The structure and parameters of various PSS are not consistent. Taking IEEE-2B type PSS as an example, the transmission block diagram is as follows figure 1 .

[0026] figure 1 The meaning of the parameters in is:

[0027] PSS parameters illustrate

Speed ​​deviation magnification

Speed ​​deviation measurement time constant

DC blocking time constant of △ω signal

DC blocking time constant of △ω signal

DC blocking time constant of △ω signal

Shafting torsional vibration filter time constant

Shaft...

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PUM

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Abstract

The invention discloses a parameter adaptability testing method for a PSS (power system stabilizator) of a grid system, which can be used for effectively measuring the adaptability of a parameter of the PSS. The parameter adaptability testing method for the PSS of the grid system comprises the following steps of: carrying out dynamic modeling on a multi-machine power system; calculating a full-dimensional characteristic value of the system; testing the sensitivity of the characteristic value to a PSS gain coefficient; determining the optimal value of a PSS phase shifting link by using a characteristic value sensitivity variation curve; and testing the adaptability of the parameter of the PSS.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a parameter adaptability testing method of a grid power system stabilizer (PSS). Background technique [0002] Under the action of small disturbances, the power system may oscillate, but as long as the amplitude of the oscillation can gradually attenuate, it is acceptable for the power system, otherwise the stable operation of the system will be seriously affected. Generator damping suppresses electromechanical oscillations caused by disturbances. However, with the weak interconnection between large systems and the extensive use of high-magnification fast excitation systems, the oscillation damping of the system will be weakened, and it is easy to cause low-frequency oscillations with increased amplitude. Therefore, improving the electromechanical oscillation damping of the system is of great significance to improving the economy and safety of power system operation. [00...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 王君亮陈强王骅余晓鹏石光徐鹏煜
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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