Incentive and Punishment Mechanism Based Method Study of Power Quality Dynamic Comprehensive Evaluation

2013 ◽  
Vol 325-326 ◽  
pp. 632-636 ◽  
Author(s):  
Jin Jing Yuan ◽  
Sen Ouyang ◽  
Jin Liang Jiang
Keyword(s):  
Time Series ◽  
Power Quality ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Comprehensive Evaluation Method ◽  
Mechanism Model ◽  
Time Period ◽  
The Index System ◽  
Punishment Mechanism

A dynamic comprehensive evaluation method of power quality based on incentive and punishment mechanism is proposed. At the beginning, the index system is designed and unified. Next, the incentive and punishment mechanism model of each index is established. Then, the vertical and horizontal scatter degree method and minimal variability theory are applied to calculate the comprehensive evaluation value of all the indices on every time period and on the whole time series respectively. Finally, the realistic example demonstrates that this method can easily differentiate the quality of different evaluation objects.

Comprehensive Evaluation on Power Quality of Tidal Current Convertors

2019 ◽  
Vol 53 (3) ◽  
pp. 46-53
Author(s):  
Caixia Xue ◽  
Xiang-nan Wang ◽  
Ning Jia ◽  
Yuan-fei Zhang ◽  
Hai-nan Xia
Keyword(s):  
Power Generation ◽  
Support Vector Machine ◽  
Power Quality ◽  
Tidal Current ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Support Vector ◽  
Operational Data ◽  
Testing And Evaluation

AbstractWith the continuous development of testing and evaluation of tidal current convertors, power quality assessment is becoming more and more critical. According to the characteristics of Chinese tidal current power generation and power quality standards, this paper proposes a comprehensive evaluation method of power quality based on K-means clustering and a support vector machine. The fundamental purpose of the method is to automatically select the weights of various indicators in the comprehensive assessment of power quality, by which the influence of subjective factors can be eliminated. In order to achieve the above purpose, K-means clustering is used for automatically classifying the operational data into five different categories. Then, a support vector machine is used to study and estimate the relationship of the operational data and categories. Using the method proposed in the paper, the analysis of operational data of a tidal current power generation shows that calculation results can objectively reflect the power quality of the device, and the influence of subjective factors is eliminated. The method can provide a reference for the testing and evaluation of a large amount of tidal current convertors in the future.

Comprehensive Evaluation of the Coupling Construction Progress and Quality of High Core Rockfill Dam

2012 ◽  
Vol 256-259 ◽  
pp. 2439-2443
Author(s):  
Bo Cui ◽  
Ning Liu ◽  
Chen Sheng Zhao
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Index ◽  
Dam Construction ◽  
Real Time Control ◽  
Comprehensive Evaluation Method ◽  
Time Control ◽  
Rockfill Dam ◽  
Core Rockfill Dam

Construction progress and quality are two important objectives in the construction of high core rockfill dam. It is of great significance to evaluate their control effect comprehensively. In this paper, the progress and quality of high core rockfill dam construction management are the study objectives. in order to achieve the real-time control of coupling them, the comprehensive evaluation method for the quantitative analysis of their complex relationship is proposed. Based on the comprehensive analysis of the mechanisms of the influence related factors in the construction process, the comprehensive evaluation index system of the high core rockfill dam coupling construction progress and quality is designed ; the comprehensive evaluation index data acquisition process is analyzed; the comprehensive evaluation method for the high core rockfill dam filling unit is put forward. finally, a comprehensive evaluation of high core rockfill dam filling unit model based on TOPSIS is established. Engineering examples show that this method plays a guiding role in real-time control of coupling high core rockfill dam construction progress and quality.

Making-Decision of Selecting Outstanding Teachers in University Based on Fuzzy Comprehensive Evaluation Method

2011 ◽  
Vol 219-220 ◽  
pp. 814-819 ◽  
Author(s):  
Jun Liu ◽  
Yan Li
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Teaching Staff ◽  
High Quality ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Outstanding Teachers ◽  
Rational Evaluation

Evaluation of teachers is one of the most important sectors for colleges and universities to foster a high-quality teaching staff influencing the training qualities of students directly. Scientific and rational evaluation of teachers has the important guide functions to improve the quality of teachers, inspire teachers' potential and creativity and encourage teachers to make constant progress. It is difficult to evaluate one teacher objectively and fairly using the ordinary evaluation method for the influencing factors are more and complex. The fuzzy comprehensive evaluation method of selecting outstanding teachers in university is proposed in this paper, its main goal is to make the scientific and rational evaluation on one teacher and select outstanding teachers. Finally, an example of fuzzy comprehensive evaluation on one certain teacher for the illustration of the proposed method is represented, the result indicates that the scientific and rational evaluate result is provided by the fuzzy comprehensive evaluation method.

Application Study of Fuzzy Comprehensive Evaluation Method on Ammunition Management in Rear Depot

2012 ◽  
Vol 239-240 ◽  
pp. 1476-1479
Author(s):  
Xin Hui Zhang ◽  
Hong Liang Pan ◽  
Shi Liang Yang ◽  
Teng Li ◽  
Qing Zhang
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Evaluation Process ◽  
Fuzzy Comprehensive Evaluation ◽  
Application Study ◽  
Comprehensive Evaluation Method ◽  
Management Quality ◽  
Objective System

Aiming at the quality of ammunition management in rear depot, this paper determines an evaluation objective system and makes a detailed analysis on its structure. On the basis of this, an evaluation model for ammunition management quality--tree structure model for multi-objective and multistage fuzzy comprehensive evaluation is proposed. Examples are used to demonstrate its evaluation process.

Research on Grading Standard of the Project Quality Management System under Comprehensive Evaluation Method

2014 ◽  
Vol 638-640 ◽  
pp. 2332-2337
Author(s):  
Hong Ke ◽  
Lu Yue ◽  
Zhi Ping Hu
Keyword(s):  
Quality Management ◽  
Management System ◽  
Evaluation Method ◽  
Quality Management System ◽  
Comprehensive Evaluation ◽  
Construction Quality ◽  
Comprehensive Evaluation Method ◽  
Advantages And Disadvantages ◽  
Bid Price

There are two kinds of bid evaluation methods in China, which are the lowest bid price method and the comprehensive evaluation method. They have their own advantages and disadvantages, and they can’t replace each other. Especially, the applicable scope of comprehensive evaluation method is wide. Quantifying the technical bid and commercial bid weighted, calculating for each bid comprehensive evaluating price or comprehensive evaluation points, and then selecting a high comprehensive quality unit. The paper aims at the particularity of comprehensive evaluation method. Then to study the content of the construction quality management system, the indicators and criteria, which guarantees the quality of the project.

Fuzzy Comprehensive Evaluation Method for Workability of SCC

2010 ◽  
Vol 108-111 ◽  
pp. 888-892
Author(s):  
Ya Qing Jiang ◽  
Na Na Tian ◽  
Si Jia Zhang
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Construction Sites ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Slump Flow ◽  
Single Method

Self-compacting concrete (SCC) has been widely used in engineering for improving the product quality and efficiency at the construction sites, enhancing the working conditions and the appearance of concrete. Workability is an important property of SCC. But none of a single method has been developed for evaluation workability of SCC efficiently. Aiming at the quality control of fresh SCC, a fuzzy comprehensive evaluation method for evaluating workability of SCC was put forward and a case study was done by measuring slump, slump flow, L-box ratio, J-ring flow, bleeding and sieve segregation of fresh SCC in the present paper. Evaluation results indicated that fuzzy comprehensive evaluation method can give a quantitative evaluation of workability of SCC and it is convenient to establish an expert system for controlling the quality of fresh SCC by using fuzzy comprehensive evaluation method.

Fuzzy Comprehensive Evaluation Method and Application of Slope Stability

2011 ◽  
Vol 243-249 ◽  
pp. 4969-4974 ◽  
Author(s):  
Li Ming Wu ◽  
Zi Jian Wang
Keyword(s):  
Slope Stability ◽  
Membership Function ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Impact Factors ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Dip Angle

Establish a nonlinear membership function of slope stability taking the case of six different sliding blocks on a typical slope and do a second class fuzzy comprehensive evaluation on the determinate membership. Comparing the result of stability evaluated with former result determined by extension classified method, it shows that it is basically conforming to evaluate slope stability using membership function which is established according to the changing rules of impact factors of slope such as quality of rock, massiveness of rock mass and dip angle of rock. This method can be referential in a qualified sense for the forecasting and preventing of landslide disasters.

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