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Pumped storage unit maintenance effect comprehensive evaluation method and system

A technology for comprehensive evaluation of pumped storage units, applied in data processing applications, instruments, calculations, etc., can solve the problems of comprehensive, objective, comprehensive, qualitative and quantitative evaluation of pumped storage units’ maintenance effects

Active Publication Date: 2021-04-09
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the defects and improvement needs of the prior art, the present invention provides a comprehensive evaluation method and system for the maintenance effect of the pumped storage unit. question

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  • Pumped storage unit maintenance effect comprehensive evaluation method and system
  • Pumped storage unit maintenance effect comprehensive evaluation method and system
  • Pumped storage unit maintenance effect comprehensive evaluation method and system

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Embodiment Construction

[0082] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0083] refer to figure 1 , combined with diagram 2-1 , Figure 2-2 , Figure 3-1 , Figure 3-2 , the present invention divides the pumped-storage unit into pump-turbine, generator-motor and its excitation subsystem, and deeply studies and analyzes the basic structure and pumped-storage unit pump-turbine, generator-motor and its excitation rotating and fixed parts and auxiliary equipment. B...

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Abstract

The invention discloses a pumped storage unit maintenance effect comprehensive evaluation method and system. The method specifically comprises the following steps: building a dynamic model and a static model for state monitoring signals and components of all subsystems of a pumped storage unit; adopting an analytic hierarchy process to respectively calculate index decision weights of each layer of the dynamic model and the static model; extracting a bottom index characteristic value of the dynamic model; calculating an index degradation degree according to the characteristic value and a degradation degree model; based on the index degradation degree, solving an index degradation degree weight in combination with an entropy weight method; based on the index degradation degree weight and the index decision weight of each layer of the dynamic model, calculating the comprehensive weight of each index and calculating the degradation degree of the index of the previous layer; calculating until the top layer index degradation degree is obtained, converting the top layer index degradation degree into score deduction data, and carrying out dynamic evaluation; and performing static evaluation based on the index decision weight of each layer of the static model and the deduction data of each part before and after maintenance. Therefore, comprehensive evaluation of the maintenance effect of the pumped storage unit is realized.

Description

technical field [0001] The invention belongs to the technical field of inspection and evaluation of pumped storage power plant units, and more specifically relates to a method and system for comprehensive evaluation of maintenance effects of pumped storage units. Background technique [0002] The pumped storage power station is a hydropower station that pumps water to the upper reservoir when the power load is low, and then releases water to the lower reservoir for power generation during the peak power load. It is suitable for frequency modulation and phase modulation, stabilizing the frequency and voltage of the power system, and it is suitable for emergency backup, and it can also improve the efficiency of thermal power plants and nuclear power plants in the system. However, the core equipment to realize this function is the pumped storage unit. [0003] During the operation of the pumped storage unit, it is affected by mechanical, hydraulic, electrical and other factors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/00G06Q10/06G06Q50/06
CPCG06Q10/20G06Q10/06393G06Q50/06Y02P90/82
Inventor 周建中时有松许颜贺任家朋单亚辉刘颉
Owner HUAZHONG UNIV OF SCI & TECH
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