Condition based maintenance cbm program for medium voltage underground cables after early application of very low frequency vlf. In this paper, uo is defined as the working system voltage between the conductor and. Through the study of the disadvantages of timebased maintenance, conditionbased maintenance is proposed. Direction of pull between vaults is based on the direction.
Condition based, diagnostic model, predictive maintenance, machinery, centrifugal pumps. Condition based maintenance modeling for availability. Pdf ighvoltage cables are starting to be more often used to transmit electric energy at highvoltage levels, introducing in the. Pdf study of high voltage ac underground cable systems. Based upon a framework of timefrequency analysis, a path towards systematic and comprehensive implementation of condition based maintenance cbm, or maintenance only upon evidence of need, is outlined for both electrical and mechanical systems. A conditionbased maintenance policy for multicomponent systems with a high maintenance setup cost.
The reliability of underground cable network highly depends upon proper laying of cables, quality of cable joints and branch connections etc. Speak to our team today to get the service you need. This paper details the superiority and the concept of conditionbased maintenance, the trigonometry fuzzy number theory and the fuzzy fault tree analysis have been proposed in the state diagnosis. Pdf electrical equipment condition based maintenance. Ieee guide for the design and installation of cable systems in substations 2. Explore camm systems with free download of seminar report and ppt in pdf and doc format. Conditionbased maintenance cbm is becoming increasingly important due to the development of advanced sensor and information technology, which facilitates the remote collection of condition data. A conditionbased maintenance policy for multicomponent systems with a high maintenance setup cost citation for published version apa. This seminar is a must for anyone who works with electrical equipment and systems at industrial plants, utilities or commercial and private building facilities.
Ap sensing offers distributed optical sensing technologies. Robotic monitoring of power systems seminar report, ppt. To reduce the high setup cost of maintenance, a joint maintenance interval is introduced. Based on our hpagilent heritage, with over 25 years of fiber optic measurement leadership, we stand for top quality and welldesigned solutions for distributed optical sensing distributed temperature sensing, distributed acoustic sensing, distributed vibration sensing. Assessing the condition and remaining life of underground. Underground electric transmission lines wisconsin psc wi. Either a wideangle global monitoring system or a distributed sensor network is used in power systems, where only important equipment. Anyone associated with power cable operation, maintenance, location and fault detection techniques.
Our engineering training courses and products help your business run better by being safer, smarter and more reliable. Introduction to piping engineering by gerald may, p. Electrical troubleshooting and preventive maintenance. The most significant issue was maintenance difficulties. This course covers many seal types and related information in the industry. Because hpff cable was used almost exclusively for 230 and 345kv underground installations in the united states, extensive failure rate data exists for hppf cable systems. Seminar topics for electronics final year students based on artificial intelligence.
The development of high voltage xlpe cable systems goes back to the since then production and material technology have improved significantly, providing reliable and maintenancefree products to the utility industry. Abstract this paper deals with the condition based maintenance modeling for availability analysis of repairable mechanical systems using markov analysis. With the online system, pd patterns and location of pd source can be. This comprehensive 10day training course has been designed to benefit both qualified new professionals as well as experienced professionals who might need to refresh their skills. The insulation system of power cables is subjected. This process will determine the asset health, and act only when maintenance is. On conditionbased maintenance is they key to maintain the correct equipment at the right time.
A field test made during the operating life of a cable system. This paper provides an introduction to the cable system types and presents an overview into considerations for using underground cable systems. The discussion is focused on transmission cables but also has relevance for distribution cable applications. Cable condition monitoring of improve reliability hilary marazzato, ken barber, mark jansen, graeme barnewall olex australia abstract the electric cable industry is definitely in the mature product stage and while there are many incremental developments and improvements, the. Download as docx, pdf, txt or read online from scribd. This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance.
Voltage ac underground cable systems, in phd seminar on. Save the date hvdc seminar 2020 english pdf leaflet litpol hvdc. This is the final report for the power systems engineering research center pserc research project titled a novel approach for prioritizing maintenance of underground cables. Partial discharge pd monitoring is one of the successful diagnostic tools for accessing the insulation condition of mv cables. Under ground cables presention linkedin slideshare. Implementation of conditionbased maintenance for medium. Results of the condition assessment are input for the. A conditionbased maintenance policy for multicomponent. Pdf condition based maintenance systemsan investigation.
We express our appreciation for the support provided by psercs industrial members and by the national science foundation under grant nsf. Power substation guides, research papers and studies eep. Maintenance actions are selected out of four actions namely no repair, minor maintenance, imperfect maintenance and major maintenance. Condition based maintenance cbm is an important part of asset management in a liberalised market place for electric energy.
When maintained in good condition, underground cable distribution systems provide high security of supply. There are three main methods of laying underground cables a. Condition based maintenance cbm on power cable circuits is an important part of asset management in a. Implementation of condition based maintenance for medium. Underground cables are, of course, meant to be installed or laid under the ground. Seminar topics for electronics based on microcontroller. It will determine the best solution to ensure system performance, safety, availability and reliability. On condition maintenance is based on using realtime data to prioritise and optimise maintenance resources. Failure rates can vary considerably between different organisations, often dictated by issues introduced at the manufacture, installation and operation stages of cable lifecycle and also the amount and impact of third. Pdf thermal analysis of underground power cablesa monitoring. A new tool for applying condition based maintenance. Online condition monitoring tools can be used as a source for condition based maintenance. Mvug cables, condition based preventive maintenance is the key for. In order to have effective monitoring and indication of the occurrence of faults, mobile robot monitoring is the best way.
Doble engineering company offers diagnostic instruments, services, and the worlds premier library of statistically significant apparatus test results for the benefit of energy generation and delivery companies and industrial power users worldwide. Voltage underground mvug cable networks are facing the challenge of. Camm systems seminar report, ppt, pdf for mechanical. Combined application of diagnostics tools for mv underground. Condition based maintenance and the use of condition based maintenance systems ensures that the condition of an item is always monitored and alarm limits can be programmed or specified to alert. Maintenance management proposal based on organization maturity level marcelo a. Condition based maintenance on mv cable circuits as part. Engineering products and training courses ea technology. Conditionbased maintenance of electrical machines author. Maintenance best practices are critical for every successful individual and company. Based on cable consultants, cable consulting international cci data base, cci predicts that the applicants. Ap sensing fiber optic distributed temperature sensing.
One approach is to formulate a maintenance cost equation given the specific data and constraints available to solve a probabilistic problem through simulation. Paper submitted to the phd seminar on detailed modelling and. A conditionbased maintenance stra tegy would permit efficient application of limited maintenance resources. Corrective maintenance method scheduled maintenance method conditionbased maintenance method 5. Preventive maintenance helps you to check the condition of your system and its components. Details of the construction of the cables and major accessories for each of these cable systems. As an independent, nonprofit organization for public interest energy and environmental research, we focus on electricity generation, delivery, and use in collaboration with the electricity sector, its stakeholders and. The electric power research institute epri conducts research, development, and demonstration projects for the benefit of the public in the united states and internationally. Condition based maintenance cbm offers the promise of enhancing the effectiveness of maintenance programs in a way that no other single concept has ever matched.
Typical formations include trefoil triangular and flat formations. There are three main methods of laying underground cables, which are i direct laying, ii drawin system and iii. Ea technology provide consultancy services to support the energy industry to become more cost effective and reliable. We propose a new cbm policy for multicomponent systems with continuous stochastic deteriorations. High voltage xlpe cable systems technical user guide.
Timebased maintenance is mainly used by power plants in our country. Seminar topics for ece based on vlsi 2015 new seminar topics for electronics based on embedded systems. Introduction increasingly, utilities, developers and power. High voltage underground cables i cable cable components 6 conductor 78 inner semiconductor shield 9 xlpe insulation 9 outer semiconductor shield 9 metallic screen 910 outer protective jacket 11 table of cable components 12 metallic screens earthing shortcircuit operating conditions 14 grounding methods 14 earth cable protection 15.
The above picture is just a screen shot, click for animated demo. Industrial cable accessories, such as joints and terminations, often experience in the recent past, mechanical issues dictated that petrochemical plant maintenance intervals be relatively short, typically one to three years. General maintenance personnel, workers in crosstraining programs, electricians and engineers will find this course extremely useful. Undergrounding high voltage electricity transmission. Although a distribution system with underground cables is less maintenance intensive than one with overhead lines, it is necessary to have clear procedures for preventive, corrective and condition based maintenance in order to ensure a long trouble free operational life for the cables. What are the maintenance procedures for underground.
Xlpe underground cable systems the three cables in a 3phase circuit can be placed in different formations. Data acquired by online pd measurements can help in identifying the upcoming faults in such cable networks and possibly forecast the remaining life of the insulation. Maintenance, although requiring the expenditure of significant amounts of energy, is usually required in order to keep or restore facilities at an acceptable operational standard 1. Ieee guide for the design and installation of cable.
The consequences of ineffective equipment maintenance can be huge in terms of system. Medium voltage cable diagnostics condition based maintenance on power cables nico van schaik, e. Also explore the seminar topics paper on camm systems with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Conditionbased diagnostic approach for predicting the. Diagnostic testing of underground cable systems neetrac. Laying of underground cables the reliability of underground cable network depends to a considerable extent upon proper laying. For service aged medium voltage cable circuits it is realised by means of cable diagnostics as part of the condition assessment of the underground cable network. Engineering and installations should jointly presurvey the job site and cable route to ensure all problem areas are uncovered before pulling.
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