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Water turbine water hammer effect time constant setting method and real-time monitoring system

A technology of water hammer effect and time constant, which is applied in the fields of electrical digital data processing, computer-aided design, instruments, etc., can solve the problems of water hammer effect time constant change of hydraulic turbines, etc.

Pending Publication Date: 2022-07-01
国家电网有限公司西南分部
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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a water hammer effect time constant setting method and real-time monitoring system of a water turbine, which solves the problem that the time constant of the water hammer effect of a water turbine changes with seasons, working conditions and other factors

Method used

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  • Water turbine water hammer effect time constant setting method and real-time monitoring system
  • Water turbine water hammer effect time constant setting method and real-time monitoring system
  • Water turbine water hammer effect time constant setting method and real-time monitoring system

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Embodiment 2

[0130] like Figure 4 As shown, the present invention provides a real-time monitoring system for the time constant of the water hammer effect of a hydraulic turbine, including:

[0131] The first calculation module is used for acquiring the parameters of the water diversion pipeline, and according to the parameters of the water diversion pipeline, to obtain the water head loss coefficient along the route and the local water head loss coefficient of the water diversion pipeline of the hydropower station, and obtain the total water head loss coefficient of the water diversion pipeline;

[0132] Obtaining module for obtaining rated flow and rated head of hydropower station;

[0133] The monitoring module is used to monitor the upstream water level, downstream water level, real-time water flow velocity and flow velocity change rate in the pipeline respectively;

[0134] The second calculation module is used for calculating the real-time value of the time constant of the water ham...

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Abstract

The invention discloses a water turbine water hammer effect time constant setting method and a real-time monitoring system, and belongs to the technical field of water turbine water hammer effect parameter analys.The method comprises the steps that the total head loss coefficient of a water diversion pipeline is obtained through calculation; acquiring rated flow and rated water head of the hydropower station; the upstream water level, the downstream water level, the real-time water flow speed in the pipeline and the flow speed change rate of the hydropower station are obtained through monitoring; and calculating to obtain a real-time value of the water hammer effect time constant of the water turbine. The problem that the water hammer effect time constant of the water turbine changes along with factors such as seasons and working conditions is solved.

Description

technical field [0001] The invention belongs to the technical field of water hammer effect parameter analysis of hydraulic turbines, and in particular relates to a time constant setting method and real-time monitoring system for the water hammer effect of a hydraulic turbine. Background technique [0002] In recent years, due to urgent environmental problems and growing electricity demand, the penetration rate of renewable energy has increased rapidly. Hydropower stations are an important part of the renewable energy system. Frequency modulation, phase modulation, emergency backup and other functions. However, when the working conditions of the turbine unit change suddenly, the opening of the guide vane will change suddenly, and the water pressure at each point of the water diversion pipeline will also change, so that the mechanical power input to the turbine will also change accordingly. When the water guide vane is suddenly opened, it will cause the flow to increase, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F113/04G06F113/14G06F119/14
CPCG06F30/20G06F2113/04G06F2113/14G06F2119/14
Inventor 余锐张宇栋汤凡罗卫华
Owner 国家电网有限公司西南分部
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