A Method for Optimizing Frequency Modulation Parameters of Pumped Storage Units

A technology for pumped storage units and optimization methods, which is applied in design optimization/simulation, electrical digital data processing, instruments, etc., can solve the problems of frequency modulation commands not fully considering frequency modulation errors and low frequency modulation efficiency, and achieve stable control performance and suppression Speed ​​fluctuation, effect of fast rated speed

Active Publication Date: 2021-08-31
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] The invention provides a method for optimizing frequency modulation parameters of pumped storage units, which is used to solve the problem of frequency modulation efficiency in the frequency modulation of existing pumped storage units due to the fact that the frequency modulation instructions output by the controller used do not fully consider the frequency modulation error calculated by the existing algorithm low technical issues

Method used

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  • A Method for Optimizing Frequency Modulation Parameters of Pumped Storage Units
  • A Method for Optimizing Frequency Modulation Parameters of Pumped Storage Units
  • A Method for Optimizing Frequency Modulation Parameters of Pumped Storage Units

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Embodiment 1

[0039] A method 100 for optimizing frequency modulation parameters of a pumped storage unit, such as figure 1 shown, including:

[0040] Step 110, constructing a simulation model of the pumped storage unit to be frequency-regulated, the above-mentioned simulation model includes: a fractional-order PID controller and a fuzzy reasoning module.

[0041] Step 120 , applying preset frequency perturbation to the above-mentioned simulation model, and optimizing through search algorithm to obtain the optimal frequency modulation parameters of the above-mentioned controller and the optimal membership function of the above-mentioned fuzzy reasoning module.

[0042] Step 130, calculate and based on the unit frequency deviation and its differential under the optimal frequency regulation parameters, control the fuzzy reasoning module to use the optimal membership function to obtain the correction amount of the optimal frequency regulation parameters.

[0043] Step 140, using the correctio...

Embodiment 2

[0115] A method for frequency regulation of a pumped storage unit, comprising:

[0116] Storing the frequency modulation control parameters obtained by using any one of the frequency modulation parameter optimization methods of the pumped storage unit as described above under each frequency disturbance condition of the pumped storage unit to be frequency adjusted;

[0117] Call the frequency modulation control parameters corresponding to the current frequency disturbance condition to control the operation of the pumped storage unit to be frequency modulation.

[0118] In this embodiment, the frequency regulation parameter optimization method of the above-mentioned pumped storage unit is used to obtain the frequency regulation parameter considering the algorithm optimization error. When using this frequency modulation parameter, the pumped storage unit system can quickly and effectively overcome the frequency disturbance and reach the rated speed. At the same time, the speed of...

Embodiment 3

[0121] A storage medium, in which instructions are stored, and when the computer reads the instructions, the computer is made to execute any method for optimizing the frequency regulation parameters of the pumped-storage unit described in the first embodiment above and / or the method described in the above embodiment Any one of the pumped-storage unit frequency regulation methods described in 2.

[0122] The relevant technical solutions are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a method for optimizing frequency modulation parameters of a pumped storage unit. The parameter optimization method includes: constructing a simulation model of the pumped storage unit to be frequency adjusted. The simulation model includes: a fractional order PID controller and a fuzzy reasoning module; The frequency disturbance is set, and the optimal frequency regulation parameters of the controller and the optimal membership function of the fuzzy reasoning module are obtained through the optimization of the search algorithm; the frequency deviation and its differential of the unit are calculated and based on the optimal frequency regulation parameters, and the control fuzzy reasoning module adopts the optimal The optimal membership function is used to obtain the correction value of the optimal frequency modulation parameters; the correction value is used to modify the optimal frequency modulation parameters to complete the optimization of frequency modulation parameters. The present invention introduces a fuzzy fractional-order PID controller, which can optimize the frequency modulation parameters according to the frequency deviation adjustment algorithm, can effectively and quickly suppress the fluctuation of the rotational speed, and avoids the problem of low frequency modulation efficiency caused by only using the frequency modulation parameters obtained by algorithm optimization for frequency modulation control .

Description

technical field [0001] The invention belongs to the field of frequency regulation of a pumped storage unit, and more specifically relates to a method for optimizing frequency regulation parameters of a pumped storage unit. Background technique [0002] The unit regulation system is the key to control the primary frequency regulation of the pump turbine unit. The optimization of the frequency regulation parameters is very important. Among them, the type of controller and the difference in regulation algorithm are of great significance to the stability of the frequency and power of the system. In the optimization of the frequency regulation parameters of the controller, when the regulation system of the pump and turbine is greatly disturbed, some parameters of the regulation system will change greatly, some of which will exceed their linear range. In addition, pumped-storage units have complex working conditions, frequent start and stop, and the "S" characteristic is particula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/14
Inventor 许颜贺伍心吕聪周建中
Owner HUAZHONG UNIV OF SCI & TECH
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