scholarly journals Comprehensive Evaluation of Carrying Capacity in Distribution Network with Large-scale Electric Heating Equipment

2021 ◽  
Vol 257 ◽  
pp. 01024
Author(s):  
Dingchen Wu ◽  
Fei Xu ◽  
Biao Dong ◽  
Ran Tian ◽  
Mingshan Wei ◽  
...  
Keyword(s):  
Carrying Capacity ◽  
Thermal Load ◽  
Large Scale ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Distribution Network ◽  
Electric Heating ◽  
Evaluation Index ◽  
Heating Equipment ◽  
Load Demand

In view of the power quality problems such as voltage fluctuation and transformer overload caused by large-scale access of electric heating equipment, the comprehensive evaluation index system and the evaluation method of the distribution network carrying capacity were proposed. Taking IEEE33 node system as an example, based on the tested node electricity load and thermal load demand, through the calculation of each evaluation index, influence of different electric heating modes on the distribution network carrying capacity was analysed and the rationality of the proposed evaluation method was verified. The results showed that using electric heat pump with thermal storage system for heating can reduce the peak voltage deviation, the network loss and further ensure the safe operation of power distribution network under the premise of satisfying the user’s thermal load demand and the stability of the distribution network.

Research on a Comprehensive Evaluation Method for Multidrop Overload Control

2013 ◽  
Vol 433-435 ◽  
pp. 1103-1108
Author(s):  
Yu Tian Zhou ◽  
Fei Tang ◽  
Jie Zhao ◽  
Song Jun Wang ◽  
Ya Jun Wang ◽  
...  
Keyword(s):  
Power Output ◽  
Power Flow ◽  
Large Scale ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Index ◽  
Overload Control ◽  
Power Outage ◽  
Comprehensive Evaluation Method ◽  
Matching Adjustment

Power flow shift being one of the main reasons that cause a large-scale blackout of power system, it is important to get the power flow shift under control at the beginning of the failure. In view of multidrop overload which frequently occurs in power outage, a comprehensive evaluation method is proposed to control the power flow shift. This method synthetically considers the control nodes' ability to eliminate the overload of the transmission in combination with PCA in which nodes' sensitivity of branch is selected as the evaluation index, divides them into two types (nodes that increase the power output to branch and others that decrease the power output to branch) and then obtains the control nodes' operation sequence. Additionally, a reverse equal matching adjustment is used to realize the control over multidrop overload. Typical numerical example is used to verify the effectiveness of the comprehensive evaluation method.

scholarly journals Research on Construction and Evaluation Method of Comprehensive Evaluation Index System for Investment Benefit of Distribution Network

2021 ◽  
Vol 257 ◽  
pp. 02063
Author(s):  
Ying Li ◽  
Xueying Zhang ◽  
Yue Zhang ◽  
Laiyuan Lai ◽  
Chao Chen
Keyword(s):  
Power Supply ◽  
Index System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Distribution Network ◽  
Distribution Networks ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Investment Efficiency

Under the new situation, the improvement of investment efficiency and efficiency will be the basic criteria for evaluating the quality of power supply enterprises’ investment activities in the distribution network. To this end, based on the characteristics of distribution network construction, combined with the internal and external development trends of power supply enterprises and development and promotion needs, this paper constructs a scientific comprehensive evaluation index system and evaluation method for the investment benefits of distribution networks, which is useful for scientifically grasping the investment needs and investment capabilities of power supply enterprises. It is of great significance to achieve a more precise and lean level of investment in the distribution network.

scholarly journals Comparative Evaluation Research on the Carrying Capacity of Multi-regional Distribution Network Owner Project Departments Based on Combined Weights

2021 ◽  
Vol 271 ◽  
pp. 01010
Author(s):  
Lin Jian ◽  
Weng Xiaochun ◽  
Yu Jing ◽  
Yu Dingwen ◽  
Zhang Zaiwei
Keyword(s):  
Carrying Capacity ◽  
Comparative Evaluation ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Distribution Network ◽  
Regional Distribution ◽  
Evaluation Research ◽  
Evaluation Index System ◽  
Variation Method ◽  
Related Data

This paper proposes a comparative evaluation method for the carrying capacity of the owner's project department based on combined weights. This method first combines the current grid companies’ requirements for the construction of the owner’s project department and the current distribution network construction management issues to systematically construct the owner’s project department’s carrying capacity evaluation index system. Through comprehensive evaluation and collection of indicator-related data, it is determined based on the coefficient of variation method. The objective weight of the indicator is determined based on the analytic hierarchy process; then the integrated scoring model is used to comprehensively calculate the normalized indicator value and weight value to obtain the evaluation analysis result; finally, the method is verified by empirical analysis Effectiveness.

scholarly journals Evaluation of Airport Environmental Carrying Capacity: A Case Study in Guangzhou Baiyun International Airport, China

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Lili Wan ◽  
Qiuping Peng ◽  
Tianci Zhang ◽  
Zhan Wang ◽  
Yong Tian
Keyword(s):  
Carrying Capacity ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Projection Pursuit ◽  
Indicator System ◽  
Development Mode ◽  
The Sustainable Development ◽  
International Airport ◽  
Environmental Carrying Capacity

In order to clarify the comprehensive operational capabilities of the airport and better plan the sustainable development mode of the airport, this paper studies the evaluation method of airport environmental carrying capacity. First, this paper proposes the concept of airport environmental carrying capacity by taking into account the complex characteristics of airports affected by multiple factors and then selects 16 representative evaluation indicators to construct an indicator system based on the Driving Force-Pressure-State-Response (DPSR) framework. Finally, the accelerated genetic algorithm-projection pursuit model is established to model a comprehensive evaluation index, which is used to calculate the airport environmental carrying capacity (AECC). The results of the case study show that the AECC of Guangzhou Baiyun International Airport (CAN) decreased year by year from 2008 to 2017, which is in line with the coordinated development level of CAN. By analysing the changing mechanism of AECC and indicators, we get 6 key influencing indicators that led to the continuous decline of AECC and put forward some political suggestions to improve the AECC.

scholarly journals A comprehensive evaluation method for the security situation of distributed power supply in distribution network

2021 ◽  
Vol 236 ◽  
pp. 01024
Author(s):  
Bo Wu
Keyword(s):  
Power Supply ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Distribution Network ◽  
Entropy Weight ◽  
Analytic Hierarchy ◽  
Chi Square ◽  
Distributed Power ◽  
Assessment Index ◽  
Comprehensive Evaluation Method

In order to study the influence of distributed power access on the security state of distribution network, a comprehensive evaluation method for the security state of distribution network including distributed power access was proposed.Based on the output model and load model of photovoltaic power supply, the security situation assessment index system of distributed power supply access distribution network is established. Then combined with fuzzy analytic hierarchy process and entropy weight method, the composite weight of each index is obtained, and the combined weight is optimized based on chi-square distance. Finally, the evaluation method based on ER algorithm (Evidential Reasoning) is proposed. Simulation results verify the effectiveness and accuracy of the proposed method.

Study on the Comprehensive Assessment of Controlling Efficiency of Engineering Project Based on Matter-Element and GAHP Model

2014 ◽  
Vol 638-640 ◽  
pp. 2446-2449 ◽  
Author(s):  
Bo Liu ◽  
Ju Qin Shen ◽  
Gao Yan Xu ◽  
Liang Tang ◽  
Zi Lin Xu ◽  
...  
Keyword(s):  
Analytical Method ◽  
Index System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Mathematic Model ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Engineering Project ◽  
Professional Qualification ◽  
Comprehensive Evaluation Method

With the aim to improve the controlling efficiency of engineering project, this essay probes into the comprehensive evaluation of controlling efficiency of engineering project and put forward scientific comprehensive evaluation method to provide support to reasonable comprehensive evaluation of controlling efficiency of engineering project. Complete comprehensive evaluation index system of controlling efficiency of engineering project is constructed from three aspects, i.e. implementation efficiency of construction objective, external coordination efficiency and professional qualification enhancement efficiency; based on matter-element analytical method, mathematic model that could evaluate controlling efficiency of engineering project comprehensively is constructed.

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.

scholarly journals Comprehensive evaluation index system of total supply capability in distribution network

2018 ◽  
Vol 108 ◽  
pp. 052065
Author(s):  
Linyao Zhang ◽  
Guilian Wu ◽  
Jingyuan Yang ◽  
Shuangrui Jia ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Index System ◽  
Comprehensive Evaluation ◽  
Distribution Network ◽  
Evaluation Index System ◽  
Evaluation Index

Evaluation on the Development of Shanghai Suburban Infrastructure Based on AHP-Entropy Method

2014 ◽  
Vol 919-921 ◽  
pp. 1451-1456 ◽  
Author(s):  
Qi Sheng Xu ◽  
Jian Gang Shi ◽  
Yong Gang Zhang
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Entropy Method ◽  
Evaluation Index ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Urbanization Level ◽  
Comprehensive Evaluation Method ◽  
Socio Economic Development ◽  
Index Weight

Infrastructure construction plays an important role in socio-economic development and urbanization level promotion. For the development of suburban infrastructure in Shanghai, the paper establishes the system of evaluation index and introduces the fuzzy comprehensive evaluation method. To make up for the insufficient of identification ability for determining the index weight by the AHP, the article uses the entropy method to make the results objective, scientific and reasonable.

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