scholarly journals Multi-attribute evaluation and deviation analysis of regional distribution network investment effect

2020 ◽  
Vol 213 ◽  
pp. 03033
Author(s):  
Jianbin Wu ◽  
Zheng Wang ◽  
Zhihong Gu ◽  
Zhuo Liu
Keyword(s):  
Power Consumption ◽  
Evaluation Method ◽  
High Reliability ◽  
Distribution Network ◽  
Regional Distribution ◽  
Clean Energy ◽  
Distribution Networks ◽  
Evaluation Index System ◽  
Three Dimensions ◽  
Pass Rate

As the input ratio of regional distribution network increases year by year, higher requirements are put forward for high quality and high reliability of power consumption. Under this background, this paper involves 11 evaluation indexes from three dimensions of reliability, economy and environmental protection, and designs the evaluation index system of investment effect of regional distribution network. The multiattribute AHP-TOPSIS-entropy weight combination evaluation method for the investment effect of regional distribution networks is constructed. And select distribution network A, B, C area for example analysis, the results show that the n-1 pass rate, power supply reliability, power consumption growth and emission reduction of clean energy generation are positively correlated with the investment effect of regional distribution network.

scholarly journals Research on Flexible Reliability Evaluation of Distribution Network System with Distributed Energy Access

2020 ◽  
Vol 213 ◽  
pp. 02033
Author(s):  
Zhihong Gu ◽  
Wei Wen ◽  
Zhuo Liu
Keyword(s):  
Distribution Network ◽  
Regional Distribution ◽  
Principal Component ◽  
Fuzzy Comprehensive Evaluation ◽  
Distribution Networks ◽  
Reliability Evaluation ◽  
Evaluation Index System ◽  
Three Dimensions ◽  
Energy Access ◽  
Distributed Energy

Access to distributed energy has brought a greater impact on the system. By analyzing the flexibility of the distribution network itself, considering the evaluation indicators of the three dimensions of effect, degree and service, this paper designs a flexible reliability evaluation index system for the distribution network, using principal component analysis and multi-level fuzzy comprehensive evaluation thoughts, a flexible reliability model was established, and calculation examples were analyzed, which is helpful to provide guidance for the development of regional distribution networks.

scholarly journals Structural Analysis and Comprehensive Evaluation of Economic Index of Distribution Network

2020 ◽  
Vol 213 ◽  
pp. 03004
Author(s):  
Litong Dong ◽  
Yinghua Chen ◽  
Yanqin Ge ◽  
Xuesong Xu
Keyword(s):  
Power Grid ◽  
Rapid Development ◽  
Distribution Network ◽  
Regional Distribution ◽  
Operating Cost ◽  
Distribution Networks ◽  
Economic Benefits ◽  
Three Dimensions ◽  
Economic Index ◽  
Investment Cost

With the orderly advancement of power system reform and the rapid development of incremental power distribution pilots, the investment process of power grid companies has become more and more transparent and standardized. However, in the current fierce environment, how to maintain certain economic benefits in various regional distribution networks has become a problem of concern. This paper establishes a distribution network asset economic index system from the three dimensions of investment cost, operating cost, and economic benefit. The hierarchical structure of indicators is clarified based on the interpretative structural model, and the economic level is measured based on the improved analytical hierarchy process AHP-fuzzy evaluation model. Finally, the analysis of calculation examples shows that: (1) The investment cost and operating cost of the distribution network indirectly affect the economic benefits of the power grid by affecting the electricity sales. (2) The economic levels of the distribution network in the three regions of X, Y, and Z are good, medium, and poor. The region X needs to strengthen the management of distribution network investment, and the region Y continues to improve the economy from all aspects of cost and income. The first thing in region Z is to improve the level of economic efficiency.

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.

A novel approach to increase the share of renewable purchase obligation for planning of distribution network including grid scale energy storage

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jitendra Singh Bhadoriya ◽  
Atma Ram Gupta
Keyword(s):  
Energy Storage ◽  
Objective Function ◽  
Distributed Generation ◽  
Carbon Emissions ◽  
Distribution Network ◽  
Clean Energy ◽  
Distribution Networks ◽  
Optimization Techniques ◽  
Novel Approach ◽  
Demand Models

Abstract In recent times, producing electricity with lower carbon emissions has resulted in strong clean energy incorporation into the distribution network. The technical development of weather-driven renewable distributed generation units, the global approach to reducing pollution emissions, and the potential for independent power producers to engage in distribution network planning (DNP) based on the participation in the increasing share of renewable purchasing obligation (RPO) are some of the essential reasons for including renewable-based distributed generation (RBDG) as an expansion investment. The Grid-Scale Energy Storage System (GSESS) is proposed as a promising solution in the literature to boost the energy storage accompanied by RBDG and also to increase power generation. In this respect, the technological, economic, and environmental evaluation of the expansion of RBDG concerning the RPO is formulated in the objective function. Therefore, a novel approach to modeling the composite DNP problem in the regulated power system is proposed in this paper. The goal is to increase the allocation of PVDG, WTDG, and GSESS in DNP to improve the quicker retirement of the fossil fuel-based power plant to increase total profits for the distribution network operator (DNO), and improve the voltage deviation, reduce carbon emissions over a defined planning period. The increment in RPO and decrement in the power purchase agreement will help DNO to fulfill round-the-clock supply for all classes of consumers. A recently developed new metaheuristic transient search optimization (TSO) based on electrical storage elements’ stimulation behavior is implemented to find the optimal solution for multi-objective function. The balance between the exploration and exploitation capability makes the TSO suitable for the proposed power flow problem with PVDG, WTDG, and GSESS. For this research, the IEEE-33 and IEEE-69 low and medium bus distribution networks are considered under a defined load growth for planning duration with the distinct load demand models’ aggregation. The findings of the results after comparing with well-known optimization techniques DE and PSO confirm the feasibility of the method suggested.

scholarly journals Research and Application of a Clear Diamond-Shaped Distribution Network Structure

2021 ◽  
Vol 9 ◽  
Author(s):  
Liu Shengli ◽  
Wu Jun ◽  
Xue Longjiang ◽  
Wu Di ◽  
Lu Haiqing ◽  
...  
Keyword(s):  
Network Structure ◽  
Power Supply ◽  
Distribution Network ◽  
Regional Distribution ◽  
Distribution Networks ◽  
Ring Network ◽  
Medium Voltage ◽  
Double Ring ◽  
Diamond Type ◽  
Supply Reliability

Aiming at the problems of low power supply reliability, poor transfer capacity between stations, and low line utilization in the current distribution network, this paper proposes a diamond-shaped distribution network structure with a clear structure. First, we investigated the typical wiring patterns of medium-voltage distribution networks in Tokyo, Japan, Paris, France, and China’s developed cities, and summarized experience and shortcomings. Secondly, combining the typical wiring patterns of distribution networks in China and abroad, construct a diamond-shaped distribution network structure, and study its adaptability, safety and flexibility, power supply reliability, and economy. Finally, take the transformation of the wiring mode of a regional distribution network in a certain city as an example, compare the use of the diamond-shaped distribution network structure in this article with the use of cable double-ring network wiring, cable “double petal” wiring, and Shanghai diamond-type wiring distribution network grid reconstruction The effect verifies the superiority of the diamond-shaped distribution network structure in this paper.

Evaluation Method for Urban Distribution Network Planning in City Taking the City Cluster Development Strategy

2013 ◽  
Vol 448-453 ◽  
pp. 2629-2635
Author(s):  
Hai Long Bao ◽  
Chen Fang ◽  
Jian Lin Yang ◽  
Yang Bai
Keyword(s):  
Development Strategy ◽  
Evaluation Method ◽  
Distribution Network ◽  
Network Planning ◽  
Evaluation Index System ◽  
Evaluation Standard ◽  
Cluster Development ◽  
Urban Distribution ◽  
City Cluster ◽  
The City

As the urbanization in China accelerates, metropolitan regions are tending to change their spatial expansion mode from traditional satellite city mode to city cluster development strategy. Under this situation, the paper proposes the method and steps of evaluation for urban distribution network in city which takes the city cluster development strategy. The method takes city cluster as the unit of network planning and evaluation, firstly analyze the functional orientation and the land allocation of the target cluster for evaluation, then take other clusters with the similar function in other metropolis by analogy, finally a more instructive evaluation index system and evaluation standard will be obtained. The practical application in the medium voltage distribution network of Mazhai Industry Park in the city of Zhengzhou has proved that the method proposed is able to meet the demand of practical work in distribution network evaluation under new situation.

scholarly journals Evaluation Method of Resource Development Effect of Cultural Industry Based on Wireless Sensor Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Dayong Sun ◽  
Yibing Xiao
Keyword(s):  
Evaluation Method ◽  
High Reliability ◽  
Resource Development ◽  
Evaluation Index System ◽  
Wireless Sensor ◽  
Sensor Technology ◽  
Cultural Industry ◽  
Tourism Resource ◽  
Development Data ◽  
Evaluation Accuracy

To overcome the problems of low evaluation accuracy and efficiency existing in traditional resource development efficiency evaluation methods, this paper proposes a new evaluation method of cultural industry tourism resource development effect based on wireless sensor technology. The method takes into account the data of cultural industry resource development collected by the wireless sensors and transmits it to the computer system by wireless transmission technology. Based on the collected development data, the evaluation index system is constructed and the index weight is calculated. Furthermore, the multiobjective weighted function is employed to calculate the development effect evaluation score and complete the evaluation of cultural industry resources development effect. Experimental results show that the proposed method can successfully improve the evaluation accuracy and efficiency, and the highest evaluation accuracy is stable at 98%. Therefore, this method has high reliability.

Adaptation Evaluation Method of Distribution Network to Accept Distributed Generations

2014 ◽  
Vol 716-717 ◽  
pp. 1172-1179
Author(s):  
Yu Hui ◽  
Xin Wang ◽  
Dong Mei Zhao ◽  
Jian Su ◽  
Peng Wang ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Distribution Network ◽  
Principal Component ◽  
Operating Conditions ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Distributed Generations ◽  
Pca Method ◽  
Protection Devices

Adaptation evaluation index system is established according to the influences brought by the distributed generations (DGs) interconnected with the distribution network. Evaluation indicators are proposed to reflect the operating conditions of distribution lines, switches and other important devices of distribution network. Combine Analytic Hierarchy Process (AHP) and Principal Component Analysis (PCA) method is used to determine the weights of the evaluation indicators. Whereby obtain the comprehensive evaluation results of distribution equipment adaptation to DGs integration. A study of a practical grid is made in the cases of the DGs centralized integration, decentralized integration, and without DGs. The simulated result shows that a large number of DGs connected with the distribution network would deteriorate a majority of the equipment operating indicators, especially to the indexes related to switches and protection devices. Meanwhile, when a distribution network is connected into the same capacity of DGs, the distribution equipment would show a better adaptation to DGs' decentralized integration.

scholarly journals Concepts, Structure and Developments of High-Reliability Cyber-Physical Fusion Based Coordinated Planning for Distribution System

2021 ◽  
Vol 9 ◽  
Author(s):  
Chong Gao ◽  
Tianlin Wang ◽  
Huazhen Cao ◽  
Ziyao Wang ◽  
Tao Yu ◽  
...  
Keyword(s):  
Physical System ◽  
High Reliability ◽  
Distribution Network ◽  
Network Planning ◽  
Distribution Networks ◽  
Cyber Physical System ◽  
Primary System ◽  
Secondary System ◽  
Planning Models ◽  
Distribution Network Planning

Coordinated control is imperative for the distribution network with the integration of wind power, photovoltaic system, and energy storage system. Meanwhile, the advanced automation terminal, intelligent control technology, and information communication technologies have greatly promoted the informatization of distribution networks which also increase the correlation between the physical system (primary system) and the cyber system (secondary system). Hence, it is critical to comprehensively coordinate the planning of the cyber-physical system for building a highly reliable power grid. This work summarizes a series of challenges brought by the highly coupled cyber-physical system, such as the primary and secondary collaborated planning models and solution algorithms. Then, the reliability assessment theories of cyber-physical systems and their application in distribution network planning models are introduced. Finally, three development directions of distribution network planning in the future are proposed, considering primary and secondary system coordinated planning.

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