Reliability evaluation method and system for hydraulic turbine governor servomotor
A technology of servomotors and hydraulic turbines, applied in hydropower, machines/engines, instruments, etc., can solve the problems of lack of reliability evaluation schemes for hydraulic turbine governor servomotors, etc.
Pending Publication Date: 2021-03-16
CHINA YANGTZE POWER +2
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a method and system for evaluating the reliability of the servomotor of the hydraulic turbine governor, aiming at solving the problem that the prior art lacks a reliability evaluation scheme for the servomotor of the hydraulic turbine governor
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0041] The invention discloses a reliability evaluation method for a relay of a hydraulic turbine governor, which is used to effectively evaluate the reliability of the relay of a hydraulic turbine governor during the operation process. Select the relevant monitoring measuring points according to the force situation during the movement of the hydraulic turbine governor relay, establish the mapping relationship between the data of the relevant monitoring measuring points and the movement speed of the governor relay, and then establish the connection by the governor relay according to the map...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a reliability evaluation method and system for a hydraulic turbine governor servomotor. The method comprises the steps of learning a mapping relationship between a state index of the hydraulic turbine governor servomotor and a servomotor action rate based on a neural network and historical data of a hydraulic turbine; determining the servomotor action rate at any moment based on the state index of the servomotor of the water turbine governor at any moment and the mapping relationship; determining a function value of the servomotor based on the servomotor action rate at any moment and a preset servomotor minimum rate limit value; determining the reliability of the servomotor based on the distribution condition of the function value of the servomotor in a standard normal coordinate system, wherein the reliability reflects whether the operation state of the servomotor meets the requirement or not. According to the invention, the blank in the field of reliability evaluation of the servomotor of the hydraulic turbine governor is effectively filled up, and a more accurate action rate value can be obtained, so that the calculated reliability is closer to the actualsystem reliability.
Description
technical field [0001] The invention belongs to the technical field of reliability evaluation of electric power system equipment, and more particularly relates to a reliability evaluation method and system of a hydraulic turbine governor relay. Background technique [0002] The relay of the hydro turbine governor is an important part of the hydro-generator set. Its main task is to adjust the frequency and output of the unit according to the change of the load, and the most important actuator in the adjustment system is the relay. The relay is an operating mechanism with two isolated hydraulic chambers that can execute linear motion commands. By applying different pressures on the upper and lower planes of the inner piston, relative motion is generated between the inner piston and the outer cylinder, so as to achieve the purpose of controlling external equipment. [0003] The oil seal between the fixed part and the moving part of the hydraulic turbine governor relay may have ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06F30/17G06F30/27F03B15/08G06F119/02G06F119/14
CPCG06F30/17G06F30/27F03B15/08G06F2119/02G06F2119/14Y02E10/20
Inventor 张官祥杨廷勇李超顺罗红俊马龙乐绪鑫廖李成赵宇杰何宏江陈绪鹏郑伟郭琛董刚王永伟
Owner CHINA YANGTZE POWER