Hydropower primary frequency modulation stability discrimination method, system and device, and medium
A discrimination method and stability technology, applied in character and pattern recognition, data processing applications, instruments, etc., can solve problems such as inaccurate discrimination of hydropower system stability, and achieve accurate and accurate discrimination results
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Embodiment 1
[0055] The invention provides a method for judging the stability of primary frequency modulation of hydropower, and the realization process is as follows: figure 1 shown, including:
[0056] Step 1: Input the acquired parameters of the hydropower system into a pre-built open-loop transfer function to obtain a Nyssl curve;
[0057] Step 2, obtaining a negative inverse description function curve based on the set gap dead zone width and the pre-built description function of the gap dead zone;
[0058] Step 3: Determine the stability of the nonlinear system based on the relative positions of the negative inverse description function curve and the Nyssl curve.
[0059] The following describes a method for judging the stability of primary frequency modulation of a hydropower system according to the present invention, combined with figure 2 for a detailed introduction.
[0060] In step 1, the acquired parameters of the hydropower system are input into the pre-built open-loop tran...
Embodiment 2
[0114] The invention provides a method for judging the stability of primary frequency regulation of hydropower combined with the analysis of four sets of governor parameters. The specific implementation process includes:
[0115] Step 1: Input the acquired parameters of the hydropower system into a pre-built open-loop transfer function to obtain a Nyssl curve;
[0116] Step 2, obtaining a negative inverse description function curve based on the set gap dead zone width and the pre-built description function of the gap dead zone;
[0117] Step 3: Determine the stability of the nonlinear system based on the relative positions of the negative inverse description function curve and the Nyssl curve.
[0118] In step 1, the acquired parameters of the hydropower system are input into the pre-built open-loop transfer function to obtain the Nyssl curve, which is specifically used for:
[0119] Establish the model of each subsystem of the hydropower system, and write the transfer functi...
Embodiment 3
[0171] The invention provides a system for judging the stability of primary frequency regulation of hydropower, comprising:
[0172] The Nyssl curve module is used to input the acquired parameters of the hydropower system into the pre-built open-loop transfer function to obtain the Nyssl curve;
[0173] The negative inverse description function curve module is used to obtain the negative inverse description function curve based on the set gap dead zone width and the pre-built description function of the gap dead zone;
[0174] A discriminating module, configured to discriminate the stability of the nonlinear system based on the relative positions of the negative inverse description function curve and the Nyssl curve.
[0175] The discriminant module, including:
[0176] a projection submodule for projecting the negative inverse description function curve and the Nyssler curve on the same complex plane;
[0177] a stabilization sub-module, used for when the negative inverse d...
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