A power restoration strategy for the distribution network based on the weighted ideal point method

2014 ◽  
Vol 63 ◽  
pp. 1030-1038 ◽  
Author(s):  
Jing Ma ◽  
Wei Ma ◽  
Dong Xu ◽  
Yang Qiu ◽  
Zengping Wang
Keyword(s):  
Distribution Network ◽  
Ideal Point ◽  
Point Method ◽  
Power Restoration

Optimierung der Revitalisierungskosten von Bestandsobjekten

Bauingenieur ◽  
2020 ◽  
Vol 95 (11) ◽  
pp. A 28-A 32
Author(s):  
Dominik Krawczyk ◽  
Pawel Nowak
Keyword(s):  
Ideal Point ◽  
Point Method

Der Artikel beschreibt das Vorgehen bei der Bewertung von fünf möglichen Varianten zur Senkung der Baukosten, die im Zusammenhang mit der Revitalisierung und Rekonstruktion eines historischen Gebäudes als Einkaufszentrum betrachtet wurden. Diese Varianten wurden nach dem Kriterium Baukosten als einem quantitativen Kriterium sowie nach den qualitativen Kriterien Visueller Eindruck, Funktionalität sowie Planungsflexibilität bewertet. Aufgrund der komplizierten qualitativen Bewertungen durch Experten wurde eine der Methoden der multikriteriellen Optimierung eingesetzt, welche nach Ansicht der Autoren im Rahmen von Entscheidungsprozessen in Bauinvestitionen selten zur Anwendung kommen. Im vorliegenden Fall wurde die Ideal Point Method eingesetzt.

scholarly journals Developing Common Set of Weights with Considering Nondiscretionary Inputs and Using Ideal Point Method

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Reza Kiani Mavi ◽  
Sajad Kazemi ◽  
Jay M. Jahangiri
Keyword(s):  
Decision Making ◽  
Ideal Point ◽  
Main Idea ◽  
Efficiency Score ◽  
Point Method ◽  
Bank Branches ◽  
Proposed Model ◽  
Decision Making Unit ◽  
Common Set Of Weights ◽  
Nondiscretionary Inputs

Data envelopment analysis (DEA) is used to evaluate the performance of decision making units (DMUs) with multiple inputs and outputs in a homogeneous group. In this way, the acquired relative efficiency score for each decision making unit lies between zero and one where a number of them may have an equal efficiency score of one. DEA successfully divides them into two categories of efficient DMUs and inefficient DMUs. A ranking for inefficient DMUs is given but DEA does not provide further information about the efficient DMUs. One of the popular methods for evaluating and ranking DMUs is the common set of weights (CSW) method. We generate a CSW model with considering nondiscretionary inputs that are beyond the control of DMUs and using ideal point method. The main idea of this approach is to minimize the distance between the evaluated decision making unit and the ideal decision making unit (ideal point). Using an empirical example we put our proposed model to test by applying it to the data of some 20 bank branches and rank their efficient units.

scholarly journals A Modified 3D-QSAR Model Based on Ideal Point Method and Its Application in the Molecular Modification of Plasticizers with Flame Retardancy and Eco-Friendliness

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1942
Author(s):  
Haigang Zhang ◽  
Chengji Zhao ◽  
Hui Na
Keyword(s):  
Flame Retardancy ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Ideal Point ◽  
Three Dimensional ◽  
3D Qsar ◽  
Qsar Model ◽  
Quantitative Structure Activity Relationship ◽  
Point Method ◽  
Contour Maps

The addition of plasticizers makes plastics flammable, and thus, poses a potential risk to the environment. In previous researches, plasticizers with flame retardancy had been synthesized, but their eco-friendliness had not been tested or described. Thus, in this paper, eco-friendliness plasticizers with flame retardancy were designed based on phthalic acid esters (PAEs), which are known as common plasticizers and major plastic additives. For a comprehensive analysis, such as flammability, biotoxicity, and enrichment effects, 17 PAEs’ comprehensive evaluation values were calculated based on the ideal point method. Further, a multi-effect three-dimensional quantitative structure-activity relationship (3D-QSAR) model of PAEs’ flammability, biotoxicity and enrichment effects was constructed. Thus, 18 dimethyl phthalate (DMP) derivatives and 20 diallyl phthalate (DAP) derivatives were designed based on three-dimensional contour maps. Through evaluation of eco-friendliness and flammability, six eco-friendly PAE derivatives with flame retardancy were screened out. Based on contour maps analysis, it was confirmed that the introduction of large groups and hydrophobic groups was beneficial to the simultaneous improvement of PAEs’ comprehensive effects, and multiple effects. In addition, the group properties were correlated significantly with improved degrees of the comprehensive effects of corresponding PAE derivatives, confirming the feasibility of the comprehensive evaluation method and modified scheme.

scholarly journals A Novel Model of the Ideal Point Method Coupled with Objective and Subjective Weighting Method for Evaluation of Surrounding Rock Stability

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Yingchao Wang ◽  
Ning Zhao ◽  
Hongwen Jing ◽  
Bo Meng ◽  
Xin Yin
Keyword(s):  
Present Model ◽  
Ideal Point ◽  
Surrounding Rock ◽  
Point Method ◽  
Good Prospect ◽  
Weighting Method ◽  
Rock Classification ◽  
Rock Stability ◽  
The Ideal

The classification of surrounding rock stability is the critical problem in tunneling engineering. In order to decrease engineering disasters, the surrounding rock stability should be accurately evaluated. The ideal point method is applied to the classification of surrounding rock stability. Considering the complexity of surrounding rock classification, some factors such as rock uniaxial compressive strengthen, integrality coefficient of rock mass, the angle between tunnel axis and the main joint, joints condition, and seepage measurement of groundwater are selected as evaluation indices. The weight coefficients of these evaluation indices are determined by the objective and subjective weighting method, consisting with the delphi method and the information entropy theory. The objective and subjective weighting method is exact and reliable to determine the weights of evaluation indices, considering not only the expert’s experiences, but also objectivity of the field test data. A new composite model is established for evaluating the surrounding rock stability based on the ideal point method and the objective and subjective weighting method. The present model is applied to Beigu mountain tunnel in Jiangsu province, China. The result is in good agreement with practical situation of surrounding rock, which proves that the ideal point method used to classify the surrounding rock in tunnels is reasonable and effective. The present model is simple and has very strong operability, which possesses a good prospect of engineering application.

scholarly journals Optimal Locating and Sizing of BESSs in Distribution Network Based on Multi-Objective Memetic Salp Swarm Algorithm

2021 ◽  
Vol 9 ◽  
Author(s):  
Sui Peng ◽  
Xianfu Gong ◽  
Xinmiao Liu ◽  
Xun Lu ◽  
Xiaomeng Ai
Keyword(s):  
Power Loss ◽  
Distribution Network ◽  
Ideal Point ◽  
Test System ◽  
Power Fluctuation ◽  
Pareto Solution ◽  
Salp Swarm Algorithm ◽  
Multi Objective ◽  
Swarm Algorithm ◽  
Battery Energy

Battery energy storage systems (BESSs) are a key technology to accommodate the uncertainties of RESs and load demand. However, BESSs at an improper location and size may result in no-reasonable investment costs and even unsafe system operation. To realize the economic and reliable operation of BESSs in the distribution network (DN), this paper establishes a multi-objective optimization model for the optimal locating and sizing of BESSs, which aims at minimizing the total investment cost of BESSs, the power loss cost of DN and the power fluctuation of the grid connection point. Firstly, a multi-objective memetic salp swarm algorithm (MMSSA) was designed to derive a set of uniformly distributed non-dominated Pareto solutions of the BESSs allocation scheme, and accumulate them in a retention called a repository. Next, the best compromised Pareto solution was objectively selected from the repository via the ideal-point decision method (IPDM), where the best trade-off among different objectives was achieved. Finally, the effectiveness of the proposed algorithm was verified based on the extended IEEE 33-bus test system. Simulation results demonstrate that the proposed method not only effectively improves the economy of BESSs investment but also significantly reduces power loss and power fluctuation.

Decision-making on choosing the type of strengthening of drains and upholstery ducts based on the ideal point method

2021 ◽  
pp. 57-62
Author(s):  
V. A. Podverbnyy ◽  
◽  
A. A. Perelygina ◽  
Keyword(s):  
Ideal Point ◽  
Point Method ◽  
Construction Work ◽  
Special Equipment ◽  
Environmental Friendliness ◽  
Advantages And Disadvantages ◽  
Source Data ◽  
Calculation Results ◽  
Resource Intensity ◽  
The Ideal

Modern materials and technologies for strengthening drainage and upland ditches, their advantages and disadvantages are considered. When choosing the type of reinforcement, the railway design engineer must compare the options for the types of reinforcement of ditches in terms of various criteria: reducing labour and resource intensity, duration of construction work, increasing durability, improving environmental friendliness, the need for special equipment, and others. An ideal point method is proposed for solving a multicriteria deterministic problem of choosing the type of ditch reinforcement. A prototype program of the decision support system for choosing the type of reinforcement using the ideal point method has been developed. The program contains four areas: the source data area; the calculation area; the guide to the types of ditch reinforcement, which separately identifies innovative types of ditch reinforcement; the area of calculation results and recommendations. With the help of the program, the test problem of choosing the type of reinforcement is solved. Of the three alternatives, a concrete roadbed is recommended-an innovative strengthening of the ditch.

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