scholarly journals Evaluation Model of Power Retail Market Construction Effectiveness

2021 ◽  
Vol 245 ◽  
pp. 01017
Author(s):  
Zhang Han ◽  
Xue Song ◽  
Hu Yuan ◽  
Ma Li ◽  
Zhang Xiaoxuan
Keyword(s):  
Power System ◽  
Evaluation Model ◽  
Decisive Role ◽  
Market Mechanism ◽  
Evaluation Index System ◽  
Weak Links ◽  
System Reform ◽  
Retail Market ◽  
Proposed Model ◽  
Market Construction

With the deepening of the power system reform since 2015, the construction of the electricity retail market continues to accelerate, the activity and competition of the electricity retail market continues to increase. In order to better guide the construction and development of China’s electricity retail market, it is necessary to accurately evaluate its construction effectiveness, finding the effectiveness and deficiencies, and making electricity retail market play the decisive role in the allocation of electricity resources. This article proposes a new set of construction effectiveness evaluation model for electricity retail market. It establishes the key factors of power retail market construction effectiveness from the seven aspects of market mechanism, market openness, market concentration, market quality, market performance, electricity retail side service content diversity and market satisfaction, etc. The corresponding evaluation index system is formed to measure the effectiveness of the electricity retail market construction, which helps to guide the discovery of weak links in retail market construction of power system and improve them in a timely manner. The validity of the proposed model is proved by case study.

scholarly journals Evaluating the Power Grid Investment Behavior in China: From the Perspective of Government Supervision

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4192
Author(s):  
Yanbin Li ◽  
Feng Zhang ◽  
Yun Li ◽  
Bingkang Li ◽  
Zhen Li
Keyword(s):  
Sustainable Development ◽  
Power System ◽  
Power Grid ◽  
Power Industry ◽  
Evaluation Index System ◽  
Investment Behavior ◽  
System Reform ◽  
The Sustainable Development ◽  
Government Supervision ◽  
The Government

Power grid investment behavior (PGIB) is a necessary prerequisite to ensure safe and reliable power supply. The supervision of PGIB is an important measure to reduce electricity price. It helps to release the dividends of the new power system reform and promote the sustainable development of the power industry. However, for a long time, China’s regulation of PGIB was relatively weak, lacking clear supervision awareness and effective supervision methods. On the basis of clarifying the contents of PGIB supervision, this paper establishes an evaluation index system for the compliance of PGIB from the government supervision perspective, involving four dimensions and 14 secondary indicators. Furthermore, a hybrid evaluation model based on the combined decision-making trial and evaluation laboratory method (DEMATEL-ANP), analytical network process method, and vague set is proposed. The results reveal that the control over cost and efficiency of the PGIB in China is not enough. According to the results, this paper puts forward the indicators that close attention should be paid to and the work priorities in China’s supervision of PGIB, which has certain practical value for the implementation of new power system reform and the sustainable development of Chinese power industry.

Adequacy Evaluation of Wind-PV-ES Hybrid Power System

2012 ◽  
Vol 608-609 ◽  
pp. 790-795
Author(s):  
Dong Lei ◽  
Lv Qin ◽  
Pu Tianjiao ◽  
Zhou Haiming
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Sequential Monte Carlo ◽  
Evaluation Model ◽  
Level Energy ◽  
Renewable Energy Resources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Proposed Model ◽  
Pv Penetration

Renewable energy resources such as wind, wave, solar and biomass are becoming more important, and Wind-PV-ES hybrid power system is a promising and efficient utilization of renewable energy. Based on the sequential Monte-Carlo simulation approach, an evaluation model of Wind-PV-ES hybrid generation system is built, and storage time series model is optimized. Lastly, the effectiveness and feasibility of the proposed model is verified by a practical example, and the system impacts of PV penetration level, energy storage capacity and rated output power are illustrated.

Research on Water Resources Vulnerability Evaluation Model Based on Extension Theory

2013 ◽  
Vol 726-731 ◽  
pp. 4123-4130
Author(s):  
Hai Jiao Liu ◽  
Yu Zhi Shi ◽  
Ming Yuan Fan ◽  
Ji Wen Huang ◽  
Hua Wei Chen ◽  
...  
Keyword(s):  
Water Resources ◽  
Index System ◽  
Evaluation Model ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Entropy Weight ◽  
Vulnerability Evaluation ◽  
Efficient Performance ◽  
Proposed Model ◽  
Water Resources Vulnerability

Water resources vulnerability evaluation has important significance to guide the water resources management and water ecological environment protection. This paper builds the water resources vulnerability evaluation index system from three aspects of natural, human and bearing capacity and integrates matter-element theory with entropy weight to construct the matter-element extension evaluation model of water resources vulnerability. The area of Shandong Province is selected for study, and the proposed model and evaluation index system are applied to respectively evaluates the water resources vulnerability of each city, the results show that the proposed model has a efficient performance, and water resources vulnerability evaluated is higher in whole study area and varies significantly in space, moreover, the northwestern cities are higher, on the contrary, the southeastern cities are lower.

scholarly journals Research and Analysis Based on Electricity Spot Market Construction in Northern China

2020 ◽  
Vol 185 ◽  
pp. 01029
Author(s):  
Sen Wang ◽  
Shuai Zhao ◽  
Liansheng Zhou ◽  
Zhiyong Gan ◽  
Changzhi Zhang ◽  
...  
Keyword(s):  
Power System ◽  
Electricity Market ◽  
Northern China ◽  
Spot Market ◽  
Market Mechanism ◽  
Heating Unit ◽  
Operation Conditions ◽  
Electricity Spot Market ◽  
Market Construction ◽  
Heating Mode

Successive development of China’s power spot market has subjected the operation and dispatching mode of the existing power system to an increasingly greater influence imposed by the electricity market mechanism. In China’s northern provinces requiring winter heating, it is a huge challenge to the trading mechanism of power spot market to simultaneously guarantee the safe operation of power system and the heating mode of heating unit. To address this issue, this paper analyses the operation conditions and problems of power spot market during winter heating in northern China. Based on the analysis of the power spot market in a northern city, This paper analyzes some crucial problems in the construction of spot market and sums up policy advice for the further construction of spot market adapted to direct electricity purchase by large consumers in northern China.

scholarly journals Quantitative Analysis of the Impact of Wireless Internet Technology on College Students’ Innovation and Entrepreneurship under the Background of “Internet Plus”

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Qinqin Lou
Keyword(s):  
College Students ◽  
Quantitative Analysis ◽  
Wireless Network ◽  
Evaluation Model ◽  
Fuzzy Optimization ◽  
Evaluation Index System ◽  
Network Technology ◽  
Proposed Model ◽  
Weight Model ◽  
Innovation And Entrepreneurship

Under the background of “Internet plus,” the opportunities and challenges that college students face in the process of innovation and entrepreneurship coexist. College students should make full use of the powerful function of the Internet to excavate the huge business opportunities hidden under the background of “Internet plus.” In the context of “Internet plus” of mass entrepreneurship and innovation, the quantitative analysis method is studied in the context of wireless network technology on college students’ innovation and entrepreneurship. This paper proposes a combined weight model and an evaluation model based on genetic fuzzy optimization neural network. This research initially establishes an evaluation index system (EIS) by analyzing the influence factors of wireless network technology on college students’ innovation and entrepreneurship. In addition, EIS is also analyzed by combining the objective weight of each index obtained by the entropy with the subjective weight of each index obtained by the analytic hierarchy process to construct a combined weight model. A genetic algorithm is used to optimize fuzzy optimization neural networks and establish an evaluation index system of wireless network technology based on genetic fuzzy optimization neural network. To minimize the output error, the function of output error is used as the fitness evaluation function to output the score after several iterations. The experimental results show that the evaluation model can determine the importance of the influencing factors of wireless network technology on college students’ innovation and entrepreneurship. It is further evident from the experiments that the proposed model has high accuracy, with the average relative error always less than 1%, which can further improve the effect of quantitative analysis. The proposed model also has a fast convergence speed that can prevent local minima.

scholarly journals Comprehensive Evaluation of Smart Grid Development Level Under Electricity Market Layout

2018 ◽  
Vol 53 ◽  
pp. 02013 ◽  
Author(s):  
Zhe Chen ◽  
Haiyun An ◽  
Ze Sun ◽  
Bingcheng Cen ◽  
Si Li
Keyword(s):  
Smart Grid ◽  
Power Systems ◽  
Electricity Market ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Distribution Network ◽  
Distribution Networks ◽  
Evaluation Index System ◽  
System Reform ◽  
Development Level

The smart grid is the latest trend and complex scientific issue in the development of power systems in the world today. With the new round of power system reform and the deregulation of the power market, comprehensive and scientific evaluation of the development level of the smart grid plays an important role in achieving the overall goal of smart grid construction. This paper constructed a comprehensive evaluation index system from the aspects of safety and reliability, economy, intelligence level and sustainability of smart distribution network. Then the comprehensive evaluation model of AHPTOPSIS intelligent distribution network was established. Finally, an empirical study on the development level of smart distribution networks of four power companies in a province was carried out, and corresponding conclusions were drawn.

scholarly journals An Evaluation Model of the Online Learning Effect Based on Fuzzy Mathematics

2021 ◽  
Vol 16 (10) ◽  
pp. 54
Author(s):  
Cuiping Tao
Keyword(s):  
Online Learning ◽  
Learning Effect ◽  
Evaluation Model ◽  
Evaluation Index System ◽  
Fuzzy Mathematics ◽  
Good Prospect ◽  
Fuzzy Evaluation ◽  
Proposed Model ◽  
Multidimensional Evaluation ◽  
Evaluation Problem

This study derived an evaluation model that overcomes the various problems in the evaluation of online learning effect. Firstly, the influencing factors in the online learning process were discussed in the paper, pointing out the direction to enhance the online learning effect. Next, a multidimensional evaluation index system was established for online learning effect. Meanwhile, the evaluation of online learning effect was treated as a fuzzy evaluation problem with multiple attributes, and an improved evaluation model for online learning effect was proposed based on fuzzy mathematics theory. The proposed model can evaluate the online learning effect effectively, and enjoy a good prospect of application.

Study on Water Ecological Security Evaluation Model Based on Multivariate Connection Number and Markov Chain

2013 ◽  
Vol 726-731 ◽  
pp. 4000-4007
Author(s):  
Hua Wei Chen ◽  
Xue Gao ◽  
Jian Liu ◽  
Xin Zhang ◽  
Hai Jiao Liu ◽  
...  
Keyword(s):  
Markov Chain ◽  
Index System ◽  
Evaluation Model ◽  
Shandong Province ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Security Evaluation ◽  
Ecological Security ◽  
Connection Number ◽  
Proposed Model

The research of water ecological security evaluation has important practical significance. This paper integrates the multivariate connection number with Markov chain to construct a dynamic evaluation model and set up the water ecological security evaluation index system from four aspects: water resources, water ecological environment, water management and control, social economy. The proposed model and evaluation index system are applied to respectively evaluate the water ecological security of Shandong Province in 1993, 1999, 2005 and 2011, and forecast its change trend, the results indicate that the proposed model has a efficient performance, the "relatively insecure" grade and "relatively secure" grade alternated in the past, the steady-state level of the water ecological security grade in Shandong province tends to be "relatively insecure", and the trend of water ecological system would rise to "relatively insecure" in the future.

scholarly journals Training Model and Quality of College Students in English Major

2021 ◽  
Vol 16 (04) ◽  
pp. 152
Author(s):  
Jingwei Tang
Keyword(s):  
College Students ◽  
Evaluation Model ◽  
Implementation Strategies ◽  
Training Model ◽  
Evaluation Index System ◽  
Weak Links ◽  
English Majors ◽  
English Major ◽  
Training Quality

This paper mainly analyzes the training model and quality of college students in English major, aiming to improve the training of English majors in colleges. Firstly, the current problems in the training of college students in English major were summarized, the influencing factors of the training quality were identified, and the implementation strategies and paths for the training model were introduced in details. On this basis, the author designed an evaluation index system, set up an evaluation model for the training quality of college students in English major, and explained the fuzzy decision process in the evaluation. The proposed evaluation model effectively quantifies the training quality of English majors in colleges. The research results provide an important guidance for pinpointing the weak links in the training model of English majors in colleges, and laying a solid basis for improving the training quality.

Comprehensive evaluation of kraft pulp properties from fast-growing woods

TAPPI Journal ◽  
2010 ◽  
Vol 9 (6) ◽  
pp. 34-39
Author(s):  
AIYU QU ◽  
YANHUI AO ◽  
JUN YAN ◽  
GUIGAN FANG
Keyword(s):  
Kraft Pulp ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Wood Cellulose ◽  
Fuzzy Matrix ◽  
Fast Growing ◽  
Pulp Properties ◽  
Evaluation Index Systems

To develop new wood cellulose resources and fast-growing pulpwood plantation fiber sources, it is very important to evaluate their pulping properties. A comprehensive multi-index pulping-suitability evaluation model is investigated in this paper by considering four fast-growing wood species. First, a new evaluation-index system for kraft pulp was developed based on traditional evaluation-index systems. Then, the membership degree of every index was analyzed to obtain a fuzzy matrix. The proportional contribution of each parameter to the main pulping properties could then be determined. Finally, a comprehensive evaluation model of kraft pulp properties was developed. The model is reliable compared with traditional assessment methods. The results confirmed the feasibility and rationality of developing new wood cellulose resources and fast-growing pulpwood plantations using fuzzy comprehensive evaluations.

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