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A Synchronous Generator Excitation Control Method Based on PSS Switching

A synchronous generator and excitation control technology, which is applied in the direction of controlling the generator through the change of the magnetic field, and the arrangement of single-network parallel feeding, can solve the problem of low damping characteristics and achieve the effect of improving damping

Active Publication Date: 2016-10-26
GUANGZHOU QINGTIAN INDAL
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Problems solved by technology

[0021] The technical problem to be solved by the present invention is to provide a synchronous generator excitation control method based on PSS switching to overcome the problem of low damping characteristics in the excitation control method based on the PSS2A / PSS2B model in the prior art

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  • A Synchronous Generator Excitation Control Method Based on PSS Switching

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Embodiment Construction

[0049] Such as Figure 9 and 10 As shown, the synchronous generator excitation control method based on PSS switching of the present invention, the synchronous generator includes a prime mover, a generator and an excitation regulator, and the excitation regulator is provided with a power system stabilizer. The control method includes:

[0050] Step 1: Set the soft switch module S2 in the PSS model of the power system stabilizer, so that the power system stabilizer can switch between the PSS1A model and the PSS2A / PSS2B model;

[0051] Step 2: The corresponding interface of the excitation regulator is electrically connected with the power regulating contact of the prime mover to detect the switching state of the power regulating contact in real time;

[0052] Step 3: The power system stabilizer is electrically connected to the corresponding interface of the excitation regulator. The excitation regulator is equipped with a PSS control module. The PSS control module is a software ...

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Abstract

The invention discloses a PSS (Power System Stabilizer) switching based synchronous generator excitation control method. A synchronous generator comprises a prime motor, a generator and an excitation regulator, wherein the excitation regulator is provided with a power system stabilizer; the control method comprises the steps of: step 1, setting a soft switch module in a PSS model of the power system stabilizer to enable the power system stabilizer to be switched between a PSS1A model and a PSS2A / PSS2B model; step 2, detecting an on / off state of a power adjusting joint of the prime motor in real time; step 3, controlling the soft switch module based on the on / off state to enable the soft switch module to be switched off and enable the power system stabilizer to run according to the PSS1A model when the power adjusting joint is in an off state, and enable the soft switch module to be switched on and enable the power system stabilizer to run according to the PSS2A / PSS2B model when the power adjusting joint is in the on state. The PSS switching based synchronous generator excitation control method has the advantages of PSS1A and PSS2A / PSS2B.

Description

technical field [0001] The invention relates to an excitation control method of a synchronous generator based on PSS switching. Background technique [0002] The function of the power system stabilizer PSS is to suppress the low frequency oscillation of the power system. Since PSS was applied in synchronous generator excitation regulator, PSS1A model and PSS2A / PSS2B model were adopted successively. Currently, the PSS2A / PSS2B model is commonly used. [0003] The mathematical model of PSS1A is as figure 1 shown. The mathematical model of PSS1A uses the active power of the generator, also known as electric power, as the input of the PSS, which is a single variable input. Generator active power is easily obtained by measurement and is a commonly used input variable in PSS. [0004] In terms of the effect of suppressing low-frequency oscillation, the active power of the generator is the most effective variable as a reference for generating additional electromagnetic torque. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/14H02J3/38
Inventor 曹成军孙君光李永忠
Owner GUANGZHOU QINGTIAN INDAL
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