Construction Of Substation Research Articles

DEVELOPMENT OF DIGITAL SUBSTATION CONSTRUCTION TECHNOLOGIES.

The development of technologies for the construction of digital substations is discussed in the article. The construction of a digital substation provides the following advantages. There are increasing the reliability of the equipment's functioning; reducing the costs of operating the equipment; increasing the efficiency of the use of the main equipment. Modern information technologies and innovative approaches to solving the tasks of automation and management of power facilities, which allow creating new type substations, have been studied. The principle of interaction of digital substation equipment is given. The differences between digital substations and analog substations are shown. The principle of operation of classical and digital substations is presented. The international experience of implementing digital substations is described. Digital substation is one of the basic technologies of Smart Grid. The basis of the construction of a digital substation is the replacement of numerous connections made by wires for the exchange of traditional analog and discrete signals with a unified exchange of digital messages, which provide the possibility of distributed implementation of the functions of the substation automation system and full functional compatibility of intelligent electronic devices of various manufacturers. The concept of "Intelligent" transformer is disclosed. A step-by-step transition to a digital substation is presented.

Application embodiment of civil construction technology of electric power system substation

In the rapid development of social economy, the power system as a guarantee of residents' normal life and work infrastructure, substation belongs to the overall system operation of the transfer station, practical project construction level affects the overall power system engineering operation quality, determines the social development of electricity safety and operation efficiency. From the perspective of overall development, the civil engineering construction of power engineering substation is the focus of the construction unit. In order to give full play to the application role of the power system and ensure the safety of the normal life of social residents, the technical personnel of the enterprise should fully grasp the key points of the civil engineering construction of the substation, pay attention to the actual situation, and determine the basic project construction scheme. Therefore, on the basis of understanding the current status of power system and substation civil construction, according to the construction technology applied in the construction of practical projects, taking the substation project of a regional power system as an example, this paper mainly discusses the application of civil construction technology of power system substation.

КОМПЕНСИРОВАНИЕ ПОТЕРЬ КОНТАКТНОЙ СЕТИ ЗА СЧЕТ ПРИМЕНЕНИЯ БОРТОВОГО НАКОПИТЕЛЯ ЭНЕРГИИ

The authors have analysed methods for energy loss reduction in catenary. Currently, there are at least two traditional methods: the first is aimed at decrease of distance between a power source and a consumer, the second - at reduction of resistance of a contact wire. The authors suggest a new method for compensation of catenary losses by installing on a board of electric motive power of an accumulating device that will compensate required power in case of energy shortage. The method allows reducing energy losses due to accumulated energy of the power source and, consequently, allows compensating it in the recuperation mode. As an accumulating device the authors have selected a Russian made supercondencer that can compensate more than a half of traction power system losses. It is equal to construction of an additional traction substation on a section with single-way feed. A simpler and a less expensive realization and high efficiency are the advantages of the proposed method.

Application of 3D Design Technology in the Construction of 220KV Miluoxi Substation

In this paper, through the application of 3D design technology in the construction of 220kV Miluoxi substation, the main aspects of the application of 3D design technology in the construction are summarized, including inter discipline verification, collision inspection, real scene modeling, equipment 3D installation details, 4D construction simulation, VR technology application and mobile application solutions. This paper also summarizes the economic, management and social benefits of three-dimensional application, which can be used as a reference for the following projects.

Research on Informatization Construction of Digital Substation in Smart Grid

The thesis is based on the premise of the technological change of digital substations. Four key points in digital substation. On the basis of technology, the "smart" characteristics of smart substations in the smart grid system are proposed and the functional architecture of smart substations is built, which reflects the informatization, digitalization, automation and interaction of smart substations from multiple angles. The current problems in the research and construction of smart substations are put forward, and the resulting research topics are analysed. Aiming at the development trend of intelligence and integration of various equipment in substations, a new system integration architecture design concept is proposed, and the specific architecture and networking methods of smart substations are elaborated.

Research on Application of Construction Model Based on 4D Visualization in Construction of Intelligent Substation

At present, the existing technology has not yet realized the conversion process from the digital design model of the substation project to the construction model. This paper provides a solution to this problem. After the design model GIM is loaded into unity, the vertices and materials of the GIM model are read and loaded into the scene through the company's independent research and development of three-dimensional design software (STD-R). The model level information returned by the terminal corresponds to the loaded model one by one, thereby obtaining a model tree structure. The research results of the thesis provide convenience for the design and construction of power grid substation projects.

Life Cycle Cost Prediction of Substation Based on Advanced PSO and Least Squares Support Vector Machine

The rapid prediction of the full life cycle cost of substation has guiding significance for the construction of substation. In this paper, a substation full life cycle cost prediction model based on advanced particle swarm optimization (advanced PSO, APSO) least squares support vector machine is established. The relevant characteristic index of the substation life cycle is used as the input of the model, and the output is the substation full life cycle cost. The simulation results are compared with the prediction results of APSO optimized LS-SVM, traditional LS-SVM, BP neural network four prediction models and related performance indicators. The simulation results show that the APSO optimized LS-SVM model has better prediction accuracy, and can predict and evaluate the life cycle cost quickly and accurately during substation design and construction, and improve the economics of substation construction.

Design and Development of a Movable and Self-Extensible Apparatus for Substation Construction and Maintenance

The increasing requirements of security operation and service quality have brought challenges to the construction and maintenance of the smart substation. In this paper, a movable and self-extensible apparatus is developed for enhancing the security and efficiency of substation construction and electrical infrastructure maintenance. The designed apparatus is equipped with a complete set of pneumatic and electric tools to achieve the integration and fastening of small electrical parts. Moreover, the developed apparatus structure can be self-extensible and self-propelled by automatically controlling the servo-drive system. Considering the extreme weather events such as strong wind, snowstorm, and the integrated blizzard conditions, the overall framework and control system of the apparatus is designed based on the finite element method, and the modal analysis and static analysis are implemented to verify stability and rigidity for the assembled apparatus frame. The security evaluation results and on-site application indicate that the apparatus can effectively enhance the security of maintenance personnel and work efficiency with characteristics of low cost, automatic control, excellent insulation, easy operation as well as high reliability.

Fault Examination of a 400kV Switchyard of 500MW Thermal Power Plant

The present paper deals with Load flow and stability analysis of thermal power plant. In the thermal power plant switchyards plays vital role in various control, security and monitoring features that enable robust routing of power from generators to loads through a complex network of transmission lines. Analysis of such switchyard is the key and most important task for planning of the Generation plant. In the past there have been many widespread blackouts in interconnected power systems, so it is essential to assure that power system must operate more stablely and reliably. In this present discussion, the adopted system of 500MW Thermal power plant comprises a generator bus connected to 6 load buses and 1 utility bus interconnected with 400kV transmission lines. Power flow studies and fault analysis are simulated in Power World simulator environment. These studies include the operating points when faults occurred in the system for the system reliability, line outages and its impact on other transmission lines such as incoming or outgoing lines and also on bus sections. Prior to planning and construction of substation, these studies help to calculate indices that reflect the reliability performance of the system. These analyses give the detail overview for future growth of power generation and subsequent extension of switchyard.

Scheme and research of realizing regional substation by using private cloud technology

In recent years, the technology of Internet of things and information communication technology have developed rapidly. With the construction of intelligent substation, the intelligent level of main equipment is constantly improving, and the power data network is constantly improving, which provides the basic conditions for the realization of regional private cloud. In this paper, the concept, advantages, implementation scheme, construction process and advanced application of regional substation are proposed. And the application mode and scenario are discussed.

Risk management during construction of electric power substations

Abstract The construction of electric power substations poses a great number of risks due to its dangerous environment. The objective of this work was to evaluate the perception of construction workers on risks, methods they use for evaluation and managing risks to which they are exposed. This study carried out a qualitative and quantitative analysis during the expansion of one electric substation, adding an additional 100 MVA power transformer. The risks were identified and analysed by using the Preliminary Risk Analysis (PRA). Additionally, a questionnaire on construction safety was created and applied on all 27 workers which participated in the construction. The results showed which activities are present during the construction of a power substation, which risks are involved and how to manage them. It was found that among several, the PRA and Checklists were the most commonly used analysis tools. Further on, it was found a relation between training and risk perception. Among perceived risks were: noise, working at heights, electric shocks, traffic accidents, poisonous animals, dust, fire and explosions. The conclusion of this study was that the construction of electric power substations brings several safety risks and that the instruction of workers allows an effective risk management, and can reduce the number of accidents in this type of working activity.

IPTEKS PENGELOLAAN KAS KECIL (PETTY CASH) PADA PT. PLN (PERSERO) UNIT INDUK PEMBANGUNAN SULAWESI BAGIAN UTARA

PT PLN (Persero) The Main Unit of North Sulawesi Development is engaged in the supply of electricity especially in the construction of Transmission and Substation. In carrying out company operations, there are non-routine and routine financing. Non-routine funding includes investment costs for the construction of transmissions and substations with large transaction value while routine financing includes consumption, fuel, gas, mineral water etc. Because of the relatively small financing, companies need petty cash management so that checks don't occur and it doesn't take long to disburse funds. Petty cash management consists of two methods, namely the imprest fund system and the fluctuating fund system. PT PLN (Persero) Main Unit for Development of North Sulawesi uses a fixed fund system because petty cash has been set for the maximum amount of cash used every month and does not change. Imprest cash allocation is carried out at the beginning of each month in accordance with planned cash flow activities that have been proposed by the Main Development Unit. Each expenditure in petty cash must be equipped with documents such as official records, receipts, receipts for purchases. Petty cash management at PT PLN (Persero) Main Unit of North Sulawesi Development in order to be managed as well as possible so as not to exceed the specified transaction limit.Keywords : petty cash, imprest fund system, petty cash management

STUDI ANALISIS KEMAMPUAN PENYEDIAAN SUPLAI DAYA AKIBAT PENINGKATAN BEBAN DI GARDU INDUK NUSA DUA

The area of South Bali is a tourist attraction that has many hotel buildings, villas, and tourism sector as well as a venue for the implementation of National and International events. Causing the burden on the Nusa Dua Main Entity will increase. Along with the load development, Nusa Dua Substation must be able to supply from GIS Airport and GIS Pesanggaran. Forecast load using linear regression to obtain the value of the development of the transformer load and power supply up to 5 years.The calculation of the growth rate of the transformer load of the Nusa Dua Substation Transformer is 8.9% per year, and the calculation of 2018 in Transformer 1 is 113.38A Trans-former 2 about 124.3A, and the Transformer 3 is 137.09A. The calculation results of the growth rate of power supply through the transmission of 150 Kv to the Nusa Dua Substation is 179,612A supplied from GIS airport, and 238.32A from GIS Pesanggaran. The difference between load and power supply in 2018 is 18.53A (0.430%) of GIS Airport and 24.53A (0.570%) of GIS Pesanggaran. Transformer 3 in 2025 is not capable of carrying the load, Transformer 2 can not loads in 2026, and Transformer 1 is not able to the burden in 2027. So that required the addition of new Transformer or construction of new substation in the area of increasing load.Keywords: growth rate, power supply, transformer.

BUILDING INFORMATION MODELING BASED COMPARISON STUDY ON ENERGY INFRASTRUCTURE PROJECT USING INDUSTRIALIZED BUILDING SYSTEM AND CONVENTIONAL METHOD

Construction industry in Malaysia has moved forward into technology-driven where its transition is in progress from conventional method to a more advanced and mechanized system known as the Industrialized Building System (IBS). This paper presents economic aspects of using Interlocking Hollow Brick System (IHBS) in the construction of the Primary Distribution Sub-station (PPU) of energy infrastructure asset development. The main objective is to compare the difference in construction method between IHBS with the conventional method. The study is focused on comparing various aspects of using interlocking block system in terms of time, costs, and utilization of workforce. Building Information Modelling tools in this study are used. From the analysis and modeling of the PPU, it is shown that the implementation of IHBS can reduce construction time, cost, and utilization of workforce up to 40% - 50% as compared to the conventional method. The construction time using IHBS can be reduced up to 48% as compared to the conventional construction method.

Architecture of centralised protection suiting future development trend of distribution network

With the deepening of China's urbanisation and the trend of multi-source distribution network is more and more obvious, traditional local protection cannot solve the new emerging fault recognition problems. Urban land tension makes the construction and reconstruction of substation particularly difficult; furthermore, long recovery time of secondary equipment becomes the bottleneck restriction of power system restoration after catastrophe. This study proposes an integration secondary equipment-based new architecture of distribution network named Protection Intelligent Centre. The centre takes over most functions of the former substation protection and automation. On one hand, the centre can optimise protection principle. On the other hand, the centre also alleviates the pressure of substation area in the city by concentrating the substation's secondary equipment and simplifies the rebuilding process after the disaster of regional grid. Then explain the function concept, overall architecture, configuration and rapid disaster recovery of protection Intelligent Centre. This architecture provides a reference for the construction of urban intelligent power distribution substation.

Research on the Management System of the 110 kV Intelligent Substation Spare Parts in Emei Cai Tuo Area

为弥补峨眉蔡沱片区110 kV智能变电站的备品备件管理方式的管理缺陷，结合物联网思维模式来改进备品备件管理方式，实现备品备件管理精益化，以进一步增强变电站管理智能化程度，提出备品备件智能管理系统。基于C#开发平台与数据库SQL Server 2005、物联网RFID技术，结合物联网思想设计开发了变电站备品备件数据管理系统，以代替传统管理方式，提高备品备件管理效能，促进了智能变电站的完善建设，有效保障了管理制度，能够对备品备件能有序且准确地监控与管理，提高了管理工作可靠度，节约成本。 In order to remedy the managing defect of the management of spare parts at the 110 kv intelligent substation in Cai Tuo area, this paper put forward a intelligent management system of spare parts, which can improve the spare parts management and realize the lean management of spare parts by combining thinking of IOT. It also can further enhance the management level of intelligent substation. Spare parts data management system based on C#, the database of SQL Server 2005 and RFID was designed and developed by combining with ideas of IOT. The spare parts data management system can monitor spare parts accurately instead of the traditional management of spare parts. It improves management efficiency and reliability of work, and it promotes the construction of smart substation. It also can security management system effectively and reduce the cost.

Health Monitoring Research Based on Fiber Bragg Grating Sensing Technology in Concrete Pouring

Aiming at the problem of hard to monitor features such as temperature, strain in time in large concrete pouring construction process during the construction of urban underground substation, this paper presents applying fiber Bragg grating sensors to collect temperature and strain data in the process of concrete pouring, then demodulating them, and transmitting them to the computer terminal, finally proceeding the real-time online monitoring. Moreover, this paper establishes the 3D models of temperature field and strain field on the basis of one pouring pile, then proceeds dynamic simulation and real-time observation, which can provide certain theoretical support and technical guidance for the site construction, further improve work efficiency, safety and reliability.

Study on the Main Electrical Connection Optimization of Smart Substation Based on Coordination between Power Grid and Substation

With the construction of smart grid and smart substation, influences of the main electrical connection on the reliability of the entire power gird have become more and more important. Therefore, coordinated development between power grid and substation is a key to the design and optimization of main electrical connection. In this paper, the entire equipment in power grid including the main electrical connection is simulated simultaneously, and then the index of power gird with the main electrical connection optimization by disconnecting circuit breaker is calculated. Optimization schemes are sorted by the method of TOPSIS, realizing the evaluation of main electrical connection based on coordinated development between power grid and substation.

The Development about Multifunction Merging Unit Used in Smart Substation

The merging unit is used to realize the digitalization and sharing of the data of process and is widely used with the electronic voltage transformer (EVT) and electronic current transformer (ECT). As the construction of smart substation which is presented by the state grid company of china, a serial new requirements and needs about the merging unit are proposed and the merging unit which only sends the sampling value can not meet it. The new demands of the smart substation are analyzed, The design of hardware and the implement of the function are presented. The multifunction which including the model of sampling, the data catenation, the acquisition of status signal through GOOSE , the voltage parallel and switching and the synchronization of device are analyzed in detailed. At the end, the function of intelligent diagnosis and debug is introduced. The device has been used in the project of smart substation and takes good effect.

Design and Implementation of Metering Abnormal and Online Diagnosis System of New Generation Intelligent Substation

In order to strengthen the accuracy and stability of the measurement information, and to enhance the safe and stable operation of the new generation intelligent substation and smart grid, it studied the metering abnormal diagnosis technology, put forward the design scheme of the metering abnormal and online diagnosis system of the new generation intelligent substation, realized real-time processing of the metering abnormal and online diagnosis analysis of the abnormal reason. The analysis model for experiment was set up. The results and tests show that the metering abnormal and online diagnosis system of the new generation intelligent substation can make the real-time analysis and review, and real-time monitor the working condition of the metering system for the whole substation. The design and implementation of the system provides a good platform for realizing the reliability, stability, versatility and interconnection of the metering system of the intelligent substation. It is suitable to the construction of the new generation intelligent substation.