Distribution Network Project Research Articles

Research on optimal investment decision of distribution network projects under the construction of the new power system

Abstract This article establishes a ranking model of distribution network projects to make optimal investment decisions. The project optimization ranking model consists of the LCC model and the project comprehensive evaluation model. When constructing the evaluation model of distribution network projects, the evaluation index system is first set, and then the weight allocation for each index is calculated based on the G1-antientropy weight comprehensive integrated weighting method, so as to calculate the comprehensive benefit of the unit cost of a project for optimal sorting. Taking a distribution network planning project in Sichuan Province as an example, the empirical analysis is conducted, and the ranking results are obtained by using the above optimization ranking model for distribution network projects depending on the comprehensive benefit index of unit cost of the project A-E, which confirms the reasonability and practicability of the decision-making system and realizes the optimization of investment decisions for distribution network projects.

Future‐proofing city power grids: FID‐based efficient interconnection strategies for major load‐centred environments

AbstractThe flexible interconnection device (FID) offers significant advantages for interconnecting different distribution networks flexibly. This paper focuses on the significant advantages offered by the FID for interconnecting different distribution networks flexibly. It specifically delves into FID‐based multi‐voltage and multi‐substation distribution networks, proposing a preferable scheme applicable to major load‐centred cities. Beginning with an analysis of constructed FID‐based flexible interconnected distribution network projects, key configurations and features are summarized. Subsequently, typical configurations, electrical parameters, facilities, relevant power functionalities, and application scenarios of multi‐voltage multi‐substation distribution networks are outlined. Building upon this foundation, a suitable interconnection scheme tailored for current urban use is explored to meet the specific needs of load‐centred cities, while incorporating recent advancements in high‐power‐density IGCT technology. An EMT model of a 10 kV/10 MW IGCT‐based four‐substation distribution network is developed in PSCAD/EMTDC. Through thorough analysis under different conditions, the operational performance and benefits are evaluated, providing insights into the efficiency and resilience of the proposed FID‐based interconnection. Lastly, challenges and prospects are discussed from various perspectives to advance the development of FID‐based flexible interconnection solutions. This study aims to contribute to the advancement and implementation of robust interconnection solutions to meet the evolving needs of major load‐centred cities.

Procedure for digitalization of measures to create a gas distribution network

It describes the possibility of digitalization of measures to create a gas distribution network. Describes the processes involved in defining the connection contract category, executing and approving project documentation. Analysis of possible reduction of measures due to use of electronic geodetic database, single site for coordination of gas distribution network projects is performed. The result of the introduction of digitalization of measures to create a gas distribution network will be a reduction of up to three calendar months of the term for fulfilling contractual obligations by the gas distribution organization.

Research on Intelligent Management of New Integrated Distribution Network: An Example of New Energy Engineering Management System

The rapid development of new energy makes the distribution network project face higher management requirements, the traditional distribution network project mainly focuses on transmission and transformer unidirectional circulation, to today's optical storage and charging, source network and load storage, micro-grid, virtual power plant and other "multi-terminal active module" together to form a multidirectional concurrency of the new distribution network. If the distribution stage is not well coordinated, the existing distribution network may be impacted. In order to improve the management pain points, this paper first discusses the status quo and pain points of traditional distribution network project management, and then takes a self-developed new energy project management system as a typical case, which is expected to explore a management system paradigm applicable to the new integrated distribution network project, and how to integrate the old and new energy sources from the perspective of project management, which will indirectly have a positive effect on the growth of the investment benefits.

Study on the Change of Power Consumption Structure in Xumai Township, Nimu County, Lhasa, Xizang

The research on the evolution of rural power consumption structure in Xizang reflects the information on rural power development in Xizang, and the information on rural power development shows the people's living standards and demand trends. In order to understand the depth of changes in the power consumption structure of farmers and herdsmen households, the project team conducted a field survey of the changes in power supply sources, power consumption structure, power consumption equipment, and operation and management status of Sumai Township, a typical village in Nimu County, Lhasa City, Xizang over the years, and explored the history and trend of power development in remote villages in Xizang. Field research has found that before 2014, the township mainly relied on small-scale independent solar photovoltaic power supply, which was almost used for lighting; Since the implementation of the State Grid in 2014, electricity consumption has shifted from low voltage to wide voltage. In the past three years, the annual electricity consumption growth rate in Xumai Township has exceeded 6%, and the power supply stability has reached 90%. At the same time, the township utilizes solar photovoltaic street lights. The electrical appliances used have developed from a single lamp to power appliances such as household appliances, agricultural electric vehicles, tsamba machines and oil presses. The distribution line of the township is gradually being replaced with medium and low voltage, and is equipped with a 35kV Xumai substation. The 10kV medium and low voltage distribution network project of the rural power grid is gradually being put into operation and put into practice. However, research has found that villagers hope to use more clean energy such as solar energy for power supply and heating, in order to reduce the cost of electricity and gas bills.

An Optimization Approach for Distribution Network Planning Strategy Based on Combined Improved Cloud Model and Evidence Theory

With the continuous promotion of China’s power reform, higher requirements and standards have been put forward for distribution network investment decisions. However, the current work of distribution network project optimization in China has the problems of high subjectivity of investment decisions, fuzzy evaluation method, and high uncertainty of project optimization. In response to the above problems, this paper proposes a distribution network planning scheme optimization method based on the improved cloud model and evidence theory. Firstly, the optimal index system of the planning scheme is constructed from the dimensions of load transfer capacity, grid structure level, load capacity, investment benefit, social benefit, and life-cycle cost. Secondly, for subjectivity and ambiguity problems, the traditional degree of the membership function is replaced by a cloud model optimized by cloud entropy. Thirdly, the problem of uncertainty is addressed through evidence theory, while the game theory approach is used to identify conflicting evidence for evidence revision and fusion in the case of conflicting evidence arising from traditional evidence theory. Moreover, by improving the TOPSIS method and comparing the distances between the basic probability assignments of each planning scheme and the positive and negative virtual optimal solutions, the final decision results can be determined. Finally, the effectiveness and superiority of the proposed method are verified by experiments.

Study on the Calculation Method of Typical Distribution Network Engineering Works in Xinjiang

At present, the investment focus of the power grid is from the main network to the distribution network, and the distribution network engineering projects, as an important means to improve the security and stability level of the power grid, the power grid transmission capacity, the equipment health level and reduce the power supply energy consumption, is also a necessary guarantee for the power grid companies to improve the economic benefits, social benefits, and achieve sustainable development. With the continuous improvement of the investment scale of the distribution network, there are still prominent problems, such as insufficient precision of the distribution network cost control and extensive management. Based on the current situation of management and control and the actual situation of typical distribution network project construction, this paper puts forward a calculation method based on the reasonable range of engineering quantity of Chebyshev inequality, which can provide a reference for the subsequent construction of similar projects, and further improve the standardization and standardization level of the company’s distribution network project cost management.

Design and research of power system Beidou timing and positioning module based on K‐means clustering and gross error processing

AbstractThe clock synchronisation of the power system is to realise the clock synchronisation of the whole network. The clock synchronisation network is composed of the clock synchronisation systems of power grids at all levels. Dispatching agencies, power plants, and substations have their clock synchronisation systems. By using computer technology, communication technology, and network technology, combined with the topological structure of the power grid and geographic information of the geographic information system, automatically process the key index data to ensure that the distribution network project can manage the power consumption and distribution 24 h without interruption. Considering the particularity of power, the accuracy of the receiver is strictly required, and so are the positioning, speed measurement, and time accuracy. Test indicators study a set of accurate and reliable test and evaluation methods. A gross error processing method based on the k‐means algorithm is proposed. Experiments show that gross errors can be well identified and eliminated in one‐dimensional and multidimensional data. Considering that invalid data may be hidden in the test data, to improve the identification accuracy without affecting the detection of normal gross errors, based on the proposed k‐means algorithm, the number of visible satellites is added. Because the magnitude difference between the number of visible satellites and the original three‐dimensional positioning error data is relatively large, it is normalised first. The processing data is extended from three‐dimensional to four‐dimensional. The experimental simulation shows that it can not only identify invalid data but also ensure a good effect of gross error elimination, reduce possible economic losses, bring significant direct and indirect economic benefits, and verify the feasibility and promotional value of the online monitoring platform through practice.

تحديد عوامل النجاح الحرجة في مشاريع توزيع الطاقة الكهربائية باستخدام عملية التحليل المتسلسل الهرمي المضبب

The aim of this research is to identify and study the most important and effect Critical Success Factors in the management of projects for improving and developing the performance of the Electricity Distribution System in Miasan Province .
 Optimal solutions to improve and develop Electrical Distribution Network projects, especially with high-load Distribution feeders, is a complex task related to the complexity of the networks and the preparation of their enormous components, and to the changings of loads and other factors related to resolve suffocations, rehabilitation and development projects In order to improve these projects, the method of Fuzzy Analytical Hierarchical process (FAHP) was applied and highlighted a number of key criteria and detailed factors The importance of criteria has been reached with each other and the preference of the Safety criterion over others, this can help decision-makers focus on the factors most influencing the success of projects.

Comprehensive evaluation of distribution network project cost management level based on optimized random forest

AbstractIn this article, by analyzing the content and characteristics of the cost management of the distribution network project, the evaluation index system of the cost management level is formulated first. Gini index in random forest algorithm and analytic hierarchy process are used to analyze the influencing factors of the cost management level of distribution network project from quantitative and qualitative aspects. The results show that design change and on‐site visa management have a great impact on management level, while project advance payment management has a relatively small impact. Based on the above analysis results, this article simplifies the indicators, so as to optimize the random forest model. After verification, the optimized model can improve the efficiency of evaluation, on the other hand, it can effectively improve the accuracy of evaluation, ensure the scientificity of evaluation, and provide reference for improving the cost management of distribution network project.

Comprehensive evaluation of 5G+ smart distribution network based on combined weighting method-cloud model

With the large-scale application of 5G technology in smart distribution networks, the operation effects of distribution networks are not clear. Herein, we propose a comprehensive evaluation model of a 5G+ smart distribution network based on the combination weighting and cloud model of the improved Fuzzy Analytic Hierarchy-Entropy Weight Method (FAHP- EWM). First, we establish comprehensive evaluation indexes of a 5G+ smart distribution network from five dimensions: reliable operation, economic operation, efficient interaction, technological intelligence, and green emission reduction. Second, by introducing the principle of variance minimization, we propose a combined weighting method based on the improved FAHP-EWM to calculate the comprehensive weight, so as to reduce the defects of subjective arbitrariness and promote objectivity. Finally, a comprehensive evaluation model of 5G+ smart distribution network based on cloud model is proposed by considering the uncertainty of distribution network node information and equipment status information. The example analysis indicates that the overall operation of the 5G+ smart distribution network project is decent, and the weight value calculated by the combined weighting method is more reasonable and accurate than that calculated by the single weighting method, which verifies the effectiveness and rationality of the proposed evaluation method. Moreover, the proposed evaluation method has a certain guiding role for the large-scale application of 5G communication technology in smart distribution networks.

Application of Data Mining in the Settlement Management of Distribution Network Projects

With the development of intelligent technology, the distribution network has also ushered in a new round of upgrading and transformation. New technologies, equipment, and platforms will be introduced to bring innovative blood to the distribution network. This paper proposes a data mining settlement management method for distribution network projects. The improved K-means method is used to estimate the coefficients of each link of the project investment. When a large deviation of a certain coefficient is found, the investment adjustment is made immediately to avoid the overall investment. This method can save costs for infrastructure construction, through the data mining deeper, can form a standard, intelligent analysis method, realize based data acquisition to the output results from the application of rapid transformation, realize the material equipment price forecast and project construction cost and fast estimation, provide project decision-making more scientific and accurate, and make the whole process of project cost more accurate.

Economic Evaluation Method of Incremental Distribution Network Project Based on Value Theory

In order to improve the weight calculation accuracy and overall evaluation accuracy of incremental distribution network project economic evaluation, a new incremental distribution network project economic evaluation method based on value theory is proposed in this paper. Firstly, based on the value theory, the economic characteristics of incremental distribution network are analyzed. Secondly, the economic benefits of the incremental distribution network project are calculated from the perspectives of DG owned operators and DG owned users. Finally, based on the calculation results of economic benefits, this paper constructs the evaluation index system, calculates the evaluation weight from both subjective and objective aspects, and finally completes the economic evaluation of incremental distribution network project. The experimental results show that compared with the traditional evaluation methods, this method can accurately calculate the evaluation weight, so as to obtain more accurate evaluation results.

Discussion on Construction Management and Quality Control of 10kV Distribution Network Project

Discussion on Construction Management and Quality Control of 10kV Distribution Network Project

Research on pricing model of uninterrupted maintenance for distribution network project of power grid enterprise

Uninterrupted operation of distribution network engineering is an important means to ensure the safe and reliable operation of power supply equipment and improve the level of power supply reliability and quality service. In recent years, with the vigorous promotion of the power grid company, the uninterrupted operation of distribution network has a more rapid and standardized development. At present, the pricing basis of distribution network engineering has not included the content of uninterrupted power operation, which leads to the problems of unable to find the corresponding quota and unclear charging standard in the actual construction charging process. Therefore, it is urgent to study the pricing method of uninterrupted power operation, guide the uninterrupted power operation, standardize the charging, and promote the healthy development of power construction.

City gas distribution projects delay in India: a critical assessment of risks

PurposeThis study aims to identify and rank the operational and financial risks causing a delay in the commencement of the city gas distribution project in India.Design/methodology/approachThis study reviews the literature to identify operational and financial risks variables associated with infrastructure projects. Followed by a survey to isolate and assess the critical risk factors for city gas distribution network project in India. The survey data is evaluated using factor analysis to understand the latent structure of the critical risk factors. Second, the author ranks the identified variables as per significance by using the mean score method.FindingsFive critical risk factors with 20 variables were extracted and assessed to build more understanding of their significance and impact on city gas distribution network project.Originality/valueThis study is the first attempt to follow the management approach to identify and rank operational and financial risks impacting city gas distribution project.

Optimization Decision Method based on Nonlinear Analytic Hierarchy Process for Active Distribution Network Planning

Aiming at the investment environment of the distribution network, this paper deeply analyses the investment conditions of the distribution network, introduces the analytic hierarchy process and modern investment theory, establishes the analytic hierarchy of the investment conditions in the distribution network project, and proposes an optimization decision-making method of investment plan in distribution network. This paper also establishes two new concepts: condition score and correlation score, uses the improving analytic hierarchy process to calculate the weights, proposes a priority ranking method for distribution network projects, and gives detailed process. to formulate distribution network investment plans. The application of the proposed method to optimize the distribution network planning scheme shows that the optimization investment scheme given has better investment benefits under the condition of the power supply reliability requirements of the distribution network and investment capital constraints.

Quantitative study on benefits of distribution network investment

The development of distribution network in China lags behind the transmission network seriously, which is difficult to meet the development needs of high proportion of renewable energy power system in the future. Facing the huge investment demand of distribution network, it is urgent to improve the existing extensive experience based investment decision-making method and avoid the subjectivity of qualitative index evaluation method. In this paper, the life cycle theory and input-output method are used to study the quantification of distribution network investment benefit. The quantitative models of economic benefit and social benefit of distribution network investment are established to provide support for the comparison and decision-making of distribution network projects. Finally, an empirical analysis of the investment benefit model of a high-voltage distribution network project is carried out to verify the feasibility of the research results.

The Whole Process Research On Distribution Network Construction Projects Management Based On Information Management and Control

Distribution network is an important public infrastructure for national economic and social development, bearing the people’s growing expectation for better life. The new time urgently requires the construction of distribution network to be safer, better and more efficient. This paper relies on the team dream information system, Focusing on the safety, quality and schedule requirements of distribution network construction management, giving full play the supporting role of information system in engineering construction management, Creates closed-loop management of process nodes such as project preliminary design and feasibility study, materials, construction, completion, production, settlement and filing, so as to realize seamless connection of project preliminary design and feasibility study, efficient and transparent material management, deep integration of construction completion and close connection of production settlement, improve work efficiency and enhance the construction and management level of distribution network projects.

Research on Post Investment Evaluation of Distribution Network Infrastructure Project Adapting to Transmission and Distribution Price Reform

Under the background of the continuous promotion of the current transmission and distribution price reform, the company's investment strategy is constantly inclined to the distribution network, so it is more important to evaluate the implementation process and effect of its investment. Therefore, on the basis of the current distribution network post evaluation work, it is urgent to adjust the project investment post evaluation index system adaptively, and strengthen its application in investment management, so as to give play to its greater value in the company's investment lean management. For this reason, combined with the requirements of the current transmission and distribution price reform, this paper puts forward two suggestions for the current post evaluation work: first, to adapt to the transmission and distribution price reform, it is suggested to optimize the existing indicators and improve the adaptability of post evaluation work; second, it is suggested to strengthen the application of post evaluation results. Through the optimization of the above two points, the closed-loop investment management of distribution network project is formed, and the efficiency of investment management is improved.