A mini project report on operation and maintenance of 2202kv substation submitted in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering submitted by v. What is the first equipment of the substation connected to the incoming transmission line. Security of supply or substation service continuity is the main factor in selecting the switching scheme. Improving substation maintenance best practices for greater success. These standards created and made available are for the construction of ergon energy. A survey on the substation maintenance practices in a saudi electric utility was carried out. It has single 100% battery and 100% charger, low capital cost, no standby dc system outage for maintenance. Tambo international airport ort 1012017 tender notice and invitation to bid t1. Maintenance covers a wide range of activities aimed at keeping the equipment in perfect working condition for. Electrical switchgear safety a guide for owners and users this is a webfriendly version of leaflet indg372rev1, published 04 introduction this guidance is for owners and operators of electrical switchgear in industrial and commercial organisations with little electrical knowledge or expertise available inhouse.
A maintenance strategy which allows for these factors as well is referred to in this paper as reliability centered maintenance rcm 1, 2. Operation and maintenance of substation equipment and ehv. The arrangement shall afford maximum flexibility for routine maintenance. Substation maintenance i substation maintenance ii when. The manual is applicable for all substation projects regardless of internalexternal design delivery mode. Construction, operation, and maintenance plan plan of development trinity pud direct interconnection project i. The excuse of why you can receive and acquire this manual on ehv substation equipment maintenance sooner is that this is the baby book in soft file form. Each equipment in the substation or the plant is provided with a column.
Minimum requirements for maintenance of transmission and. Substations form an important element of transmission and distribution network of electric power system. Usual maintenance sophisticated methodologies on measures to determine the quality of the sf6 insulating gas, visual and optical verifications, gas handling records, and leak detection are routines presented. Substation transformer installation, operation, and maintenance instructions and parts replacement information coope ower effective june 2016 series supersedes s2101510 february 20. Operation and maintenance of substation equipment and ehv transmission lines in this case, the tap position should be reduced, so as to keep the voltage up to the normal value. Maintenance manual chapter 9 electrical system maintenance. For switchgear and protective equipment, preventive maintenance is recommended because failure of a switchgear cannot be permitted. Chapter 9 electrical system maintenance general all electrical systems require periodic maintenance in addition to nonscheduled maintenance caused by unpredictable events such as storms, accidents, and equipment failure. Substation transformer installation, operation, and. This type of maintenance may be appropriate for low value items. Purpose and scope this procedure establishes safe working practices for handling sulfur. Best management practice bmp manual february 2007 final. Enersol are a high voltage installation and maintenance company specialising in contracts to look after customers high and low voltage equipment whilst taking on the role of authorised person duties if.
As operating and maintaining such a vast ehv transmission network is a complex process, it is of utmost importance that a documented operations and maintenance manual is prepared and published to ensure standardization or processes, safety of equipment and manpower. The objective of the project was to maintain or improve system reliability. Maintaining substation reliability using an asset manageme. Manual on ehv substation equipment maintenance by author g. Introduction in our present society that is greatly dependent on electric power, substation technology plays an important role in the stable and highquality transmission of electric energy.
Basic substation configurations and the components. The substation construction manual is not intended to replace asset management standards, but. Manual for transmission lines and substation construction and. Capacitor bank operation the capacitor bank is to be kept in service only if the power factor is below 0. The electric power substation, whether generating station or transmission and distribution, remains one of the most challenging and exciting fields of electric power engineering. Dec 31, 2015 aluminum is used widely in ehv and hv stations. Facilities instructions, standards, and techniques. Lightning arrestor is the first equipment of the substation connecting the incoming transmission lines. The maintenance period is indicated against each equipment. Furnish one print of each final drawing and a copy of instruction manual with equipment. Reduce losses via improved sf6 management and transformer cooling. Substation interview questions answers engineering tutorial.
Advances in substation equipment technology have led to increased unit capacity, smaller size, and environmental preservation. Manual for transmission lines and substation construction and maintenance activities volume i best management practices. Buy manual on ehv substation equipment maintenance. Maintenance, availability and reliability are closely related so that a level of maintenance should be specified to. Maintenance scheduling for electrical equipment bureau of. Detailed investigation of substation and preparation of boq to be done by the bidder.
Basically, these provide points for controlling the supply of. Need to isolate batterycharger combination from load under boost charge conditions in order to prevent high boost voltages. Electrical controls installation, operation, and maintenance. Manual for transmission lines and substation construction and maintenance activities volume i best management practices volume ii permits prepared for prepared by hdr engineering, inc 701 xenia avenue south, suite 600 minneapolis, minnesota 55416 february 2007. Manual on ehv substation equipment maintenance divan. As the name implies the maintenance is carried out when the equipment fails. The following current and former members of the substation subcommittee of the nreca. Hydroelectric research and technical services group denver, colorado april 2005. Extend equipment life by 510 years with maintenance guidelines. Substation equipments are important components in power system.
Equipment removal and sf6 handling should be accomplished with ease. Ehv substation layouts for busbar systems up to 400 kv eep. Though substation managers endeavour to maximize availability by following utilitys own set procedures, it is prudent to. Substation maintenance is a process of periodic, planned inspection of and, if necessary, repair, and replacement of all switchgear, buildings, and ancillary equipment in substation installations. Buy manual on ehv substation equipment maintenance book online at best prices in india on.
Abb substation care 3 tailored maintenance strategy to suit substation maintenance needs abb can provide support to enable optimized maintenance management strategies for substations. Complete security of supply may be achieved by duplicating all circuits and substation equipment such that following a fault or during maintenance connections remain available. Solutions for electrical substation maintenance smc. Maintenance basis utilizing the epri tier classification for the substation. Read this manual first read and understand the contents of this manual and follow all locally approved procedures and safety. Reduce maintenance costs by up to 30% via conditionbased maintenance. Manual shall mean this manual of specifications and standards. Maintenance intervals are normally fixed on the basis of type of equipment and sometimes on the equipment history. Technical specification for transmission line works. Maintenance of ehv substation ieee conference publication.
Sep 16, 2012 this describes how these auxiliary supplies are derived and explains how to specify such equipment. In simple terms, substation maintenance is a regimen of regular preventative checks and actions carried out. Operation and maintenance, spare parts management etc. The authors gratefully acknowledge the assistance of all who contributed. We provide a wide range of services to suit a variety of budgets and scheduling constraints. Download free cbip manual on substation maintenance cbip manual on substation maintenance if you ally infatuation such a referred cbip manual on substation maintenance book that will manage to pay for you worth, get the categorically best seller from us currently from several preferred authors. The substation design manual is not intended to replace asset management standards, but rather. Equipment by an isolating devices in the isolated position, or by adequate physical separation. Substations are integral part of a power system and form important part of. Isolated zone all items of equipment within a worktesting area for which isolation has been achieved at all point of supply. It protects other substation equipment from lightning and switching surges by suppressing them to ground. Substation transformer installation, operation and. Currently, substation maintenance regular or emergencyoperations and best practices must fit the utilitys goal of accomplishing more with less, in order to maximize assets and minimize outages.
Minimum requirements for maintenance of transmission and zone substation equipment amendment no. Modernisation of transmission system in msetcl jaolikar s. If equipment is to be retired from use, sf6 gas must be transferred to dot. These booklets are the result of extensive investigation into good utility practices, manufacturers recommendations. Common configuration of ehv ehv and ehv hv substations. However for costly substation equipments, it is not desirable to wait till the breakdown of the equipment, as this cost more to the utility as well as the availability and reliability of power gets affected. The same substation may have more than one type of configurations, depending of the voltage levels. Recent technological develop ments have had a tremendous impact on all.
Maintaining substation reliability using an asset management strategy from electricity today, octobernovember 2000 by joe nichols and bob matusheski as a result of economic pressures caused by deregulation, utilities are looking at new ways to approach the. Integration of protection, control, and data acquisition functions into a minimal number of platforms to reduce capital and operating costs, reduce panel and control room space, and eliminate redundant equipment and databases. Further each major equipment is provided with a history card. The manual is prepared on the basis of power safety rules handbook and gerc power system safety standard by making necessary modifications. Maintenance procedures of ehv transmission lines 96117. Preventive maintenance pm for substation with aging equipment was considered in this work. Ehv ehv and ehv hv substations may have several configurations topologies, depending on the requirements of the continuity, the reliability and the quality of power supply. Substations transform voltage from high to low, or the reverse, or perform any. Equipment shipped shall include a print of each final drawing,as required above, and a printed copy of the instructions. Hv substation project brief history et bihl d i 1987 f th il ti f l hv mv d established in 1987 for the realization of complex hv, mv and lv projects. Early electrical substations required manual switching or adjustment of. The main objective was to develop pm model to study the impact of pm on cost minimization in a.
For latest authorized version, please refer to the national grids infonet substation services web site substation maintenance electrical operating procedure 8 draw a vacuum on the gas compartment to complete the sf6 gas removal process. A maintenance optimzation policy for an electric power. Introduction western area power administration western is planning to construct, own, operate, and maintain a power transmission facility between trinity dam and a new switchyard at weaverville, trinity county, california. Special practices on interlocks, gas zonets, and special s, spare par equipment are discussed. Internal roads are designed to provide safe access to the substation equipment with particular emphasis on electrical clearances. Routine substation services are also available if you want to reap the benefits outlined below. Technical specification construction of 3311 kv primary. The intent of periodic maintenance is to keep the system operating at an acceptable level of service to the public. This will enable the optimum use of the capacitors to improve power factor. Operation and maintenance of a gas insulated substation. If, with the capacitor bank on, power factor is below 0.
This has led the utilities to adopt conditionbased maintenance of the equipments rather than usual preventive maintenance being carried out at a fixed interval of time. Maintenance requirements, space for approaching various equipments. The scope includes hv substation, bus ducts andor cable and connections, transformers, generator circuitbreakers, excitation equipment, power plant main, lvmv switchgear, lvmcc distribution, switchgear, ups system, batteriesinverters, diesel sets, and dcs systemmain control. Series reactor is used to reduce the shortcircuit current or starting currents. Maintenance of mv switchgear, transformers, ring main. Divan enterprises, in todays scenario of everincreasing power demand, maximization of availability of existing power system elements assumes greater significance. Standard for preventive maintenance programs 201516 to 201920. Substation operation and maintentance alexander publications.
Electrical equipment, maintenance scheduling, maintenance, annunciators and alarms, arresters, batteries, bushings. Safe work practices on high voltage substation apparatus summary this document supports the power system safety rules and its requirements assembled under high voltage substation apparatus category 5. Customer substation manual 6272019 preface page 8 of 82 010. Technical specification construction of 3311 kv primary sub. A substation is a part of an electrical generation, transmission, and distribution system. Ppt on substation equipments authorstream presentation. Buswork conducts current from one part of the powerplant or switchyard to. Shunt reactor is used to control voltage during low load periods and compensate shunt capacitance of transmission line. A reliabilitiy centered maintenance strategy combin ing the. Pdf the continuity of electric supply is an important requirement in modern societies. In simple terms, substation maintenance is a regimen of regular preventative checks and actions carried out to ensure substations are kept in good working. Aster undertakes design to commissioning of substations and switch yard works of power plants. Manual for transmission lines and substation construction. Construction manual for gss rajasthan energy department.
Deployment of substation and feeder operating functions and applica. Current transformer when current in a circuit is too high to directly apply to measuring instruments, a current transformer is used. Best maintenance practices condition monitoring for reliability of ehv substation equipments 37. As usual with smc test equipment, simplicity and easeofuse are common to all secondary testing solutions for electrical substation maintenance. Design considerations of the substation and switchyard ii. The maintenance schedule is usually in the form of log sheets on which weeks, months of the year are tabulated. Substation maintenance best practices electricity today. Control and data acquisition scada system at ehv substations. Engineer, maintenance engineer responsible for carrying out maintenance works of ehv equipments, transmission. Minimum requirements for maintenance of transmission and zone. The manual is applicable for all substation projects regardless of internalexternal construction delivery mode.
Isolation device a device for rendering equipment isolated. Maintenance of substation equipment electrical info. Aug 23, 2015 main equipment in substation selection of right type of layout, equipments of adequate ratings and correct protection system will make the power system safe, secure and also give operational flexibility. The results of the survey revealed that the utility follows a timebased ma intenance concept.
Pdf maintenance and operation of an electrical substation of 220. Td3322s substation equipment maintenance requirements. Based on a customers selected maintenance strategy, each set of equipment has its own set of detailed maintenance plans. This pdf is well known book in the world, of course many people will attempt to own it. Substations are vital link and their improved availability plays major role in power delivery system. Substation operation and maintentance heres a comprehensive reference on how to operate and maintain all the essential components of substations. Pdf preventive maintenance for substation with aging. Safe work practices on high voltage substation apparatus. Protection and control in bay dedicated kiosks of an ehv switchyard general overview three trends have emerged in the sphere of substation secondary equipment. Therefore, hv equip ment must be maintained its satisfactory operating condition by applying an effective maintenance strategy. Maintenance and operation of an electrical substation of. Substation transformer installation, operation, and maintenance.
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