Pump turbine characteristic simulation method and simulator

A technology of pump turbine and simulation method, applied in simulators, instruments, control/regulation systems, etc., can solve problems such as difficulty in engineering calculation of working characteristics of reversible units, and achieve the effect of improving learning speed and fitting accuracy

Inactive Publication Date: 2019-06-07
中国东方电气集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the strong nonlinear phenomena such as opening line crossing, aggregation and twisting in the traditional expression of the full characteristics of the pump turbine, it brings difficulties to the research and engineering calculation of the working characteristics of the reversible unit

Method used

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  • Pump turbine characteristic simulation method and simulator
  • Pump turbine characteristic simulation method and simulator
  • Pump turbine characteristic simulation method and simulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] As a preferred embodiment of the present invention, with reference to the attached figure 1 and 3 , this example discloses:

[0031] The method for simulating the characteristics of a water pump turbine includes the following steps:

[0032] A. The data acquisition step is to establish a communication connection with the computer, and receive the original data of the pump turbine output by the computer; or read the original data of the pump turbine from the storage device;

[0033] B. Steps of setting BP neural network parameters, using 3-layer BP neural network to nonlinear space surface function M * =M(y * , Q * , N * ) for modeling, the input layer has three nodes, and the input variables are y * , Q * , N * ; There is one node in the output layer, the output variable is M * ; where y * Indicates relative guide vane opening, Q * Indicates relative unit flow, N * Indicates the relative unit speed, M * Indicates the relative unit moment;

[0034] C. The ori...

Embodiment 2

[0042] As another preferred embodiment of the present invention, with reference to the attached figure 1 and 3 , this example discloses:

[0043] The method for simulating the characteristics of a water pump turbine includes the following steps:

[0044] A. The data acquisition step is to establish a communication connection with the computer, and receive the original data of the pump turbine output by the computer; or read the original data of the pump turbine from the storage device;

[0045] B. Steps of setting BP neural network parameters, using 3-layer BP neural network to nonlinear space surface function M * =M(y * , Q * , N * ) for modeling, the input layer has three nodes, and the input variables are y * , Q * , N * ; There is one node in the output layer, the output variable is M * ; where y * Indicates relative guide vane opening, Q * Indicates relative unit flow, N * Indicates the relative unit speed, M * Indicates the relative unit moment;

[0046] C....

Embodiment 3

[0055] As another preferred embodiment of the present invention, with reference to the attached Figure 1-4 , this example discloses:

[0056] The water pump turbine characteristic simulator includes a main board, a display panel, an analog signal interface, and a communication and storage interface. The main board includes a power supply circuit, a processor, an analog signal conditioning circuit, and a communication and storage interface circuit; the processor is DSP+FPGA Form processor, DSP is responsible for interface function management and display panel interaction, adopts described pump-turbine characteristic simulation method in FPGA processor to carry out fitting to the original data of pump-turbine, obtains the characteristic model of water-pump-turbine; Described display panel is a The LCD liquid crystal display panel with touch function is used for displaying the characteristic curve of the water pump and turbine and operating the simulator in a touch mode; the com...

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Abstract

The invention discloses a pump turbine characteristic simulation method and simulator and belongs to the technical field of pumped storage policy modeling. According to the pump turbine characteristicsimulation method of the method, a spatial curved surface description method is adopted to characterize the full characteristics of a pump turbine, and therefore, the solving of the problem of the expression of a strong nonlinear relationship between the working parameters of the pump turbine can be facilitated, the reversible change law of the pump turbine during a working condition conversion process can be grasped accurately. The pump turbine characteristic simulator of the invention is a device that can be connected with a real-time simulation device and can simulate the characteristics of the pump turbine more efficiently and conveniently according to actual pump turbine data.

Description

technical field [0001] The invention relates to the technical field of pumped storage policy modeling, and more specifically relates to a method for simulating full characteristics of a water pump turbine and a simulator. Background technique [0002] With the rapid development of our country, the power load continues to grow, and the stable operation of the power grid is becoming more and more important. Pumped storage power station has become an effective means to solve the problem of power system peak regulation and ensure safe and reliable operation due to its characteristics of fast response such as peak regulation and valley filling, emergency backup, frequency regulation, and regulation. [0003] In order to complete the functions of power generation and water pumping, the pumped storage unit must be able to operate in both positive and negative directions. Compared with conventional hydroelectric generating units, it has a large range of operating water head, frequen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
Inventor 刘静波唐健田军杨嘉伟王多平舒军何文辉
Owner 中国东方电气集团有限公司
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