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Frequency modulation parameter optimization method for pumped storage unit

A technology for pumped storage units and optimization methods, applied in design optimization/simulation, electrical digital data processing, instruments, etc., can solve problems such as low frequency modulation efficiency and frequency modulation errors are not fully considered in frequency modulation instructions, and achieve stable control performance and fast Effect of Rated Speed ​​and Speed ​​Fluctuation Suppression

Active Publication Date: 2020-04-17
HUAZHONG UNIV OF SCI & TECH
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  • Claims
  • Application Information

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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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  • Frequency modulation parameter optimization method for pumped storage unit
  • Frequency modulation parameter optimization method for pumped storage unit
  • Frequency modulation parameter optimization method for pumped storage unit

Examples

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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] This embodiment adopts the above method for optimizing the frequency regulation parameters of the pumped storage unit, and obtains the frequency regulation parameters considering the optimization error of the algorithm. 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...

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 frequency modulation parameter optimization method for a pumped storage unit, and the method comprises the steps: constructing a simulation model of a to-be-modulated pumpedstorage unit, and the simulation model comprising a fractional order PID controller and a fuzzy inference module; applying preset frequency disturbance to the simulation model, and carrying out optimizing through a search algorithm to obtain an optimal frequency modulation parameter of the controller and an optimal membership function of the fuzzy inference module; calculating and controlling thefuzzy inference module to adopt an optimal membership function based on the unit frequency deviation and the differential of the unit frequency deviation under the optimal frequency modulation parameter to obtain the correction amount of the optimal frequency modulation parameter; and correcting the optimal frequency modulation parameter by adopting the correction amount to complete optimization of the frequency modulation parameter. According to the method, the fuzzy fractional order PID controller is introduced, the frequency modulation parameter can be obtained through optimization according to the frequency deviation adjusting algorithm, rotating speed fluctuation can be effectively and rapidly restrained, and the problem that the frequency modulation efficiency is low due to the factthat only the frequency modulation parameter obtained through algorithm optimization is adopted for frequency modulation control is solved.

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 Applications(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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