This manual may contain four types of hazard statements. Loss of a circuit or section of the substation due to fault or maintenance. Condition based maintenance cbm checking and maintaining of components according to a schedule based on the condition of the equipment. Lv transformer electrical substation consists, therefore, of the. It also is used to change ac voltages from one level to another, andor change alternating current to direct current or direct current to alternating current. The lack of maintenance may result in failure in operation. 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.
In general, it consists of locating the trouble, repair and recommissioning. By this post, you will gain some very basic information for a substation. Apr 30, 2020 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. Substation types distribution substation located near to the endusers changes the transmission or subtransmission voltage to lower levels for endusers distribution voltages varies from 34,500y19,920 v to 4,160y2400 v blast and burn generally associated with fault current. 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.
Simplified assessing of substationoriginated outages in analysis of transmission system reliability 311 a breaker can become stuck when the circuitbreaker in the primary zone fails to operate after an active failure event. Substation technicians play a vital role in ensuring that businesses, institutions and homeowners have the electrical power needed to maintain their operations. An introduction to electrical substations maintenance paperback may 18, 2017. Substation services maintenance contracts increasing. Over view of line and substation maintenance insulator. Heres a comprehensive reference on how to operate and maintain all the essential components of substations. Preventive maintenance is undertaken as per schedule before breakdown of a system or machine takes place. Membership in the substation maintenance services program with a substation maintenance services agreement, companies are assigned a field service engineer who works directly with them on a customized substation maintenance program tailored to their schedule and needs. A survey on the substation maintenance practices in a saudi electric utility was carried out. Maintenance contracts increasing substation availability substation services combining more than 100 years of experience and innovation in the. Our team has a thorough knowledge of substation design, as well as wealth of. Therefore, hv equip ment must be maintained its satisfactory operating condition by applying an effective maintenance strategy. Numbers of breakers, disconnect switches, transformers, auxiliaries, protective devices, lines and other equipment.
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. High and medium voltage substation design, testing and. Factors influing substation availability equipment failure rate and repair time. Substation structure design guide books asce library. Fundamentals of modern electrical substations part 1.
Introduction to substations annotated instructors guide module overview this module introduces trainees to the function of substations at all levels of the power grid, with an introduction to typical substation components included. Subnet company profile subnet is a software products company dedicated to serving the needs of the electric utility industry subnet provides innovative interoperability solutions that combine the latest substation technologies with modern day networking and computing technologies enabling electrical utilities to build a smarter, more effective. Oct 22, 2016 indoor substation is inside a building. The results of the survey revealed that the utility follows a timebased ma intenance concept. Short circuit and current capacity of equipment, bus and other equipment compliance with projects scope and requirements number of feeders and load circuits.
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. Substation service inspection and condition monitoring guide photo credit. The maintenance requirements of static equipments like transformers, capacitors etc. That way, youll have baseline images with which to compare later images. A novel concept for substation maintenance management.
Basics, maintenance, and diagnostics vii contents continued page 4. By this post, you will gain some very basic information for. It consists different types of equipment like transformer, generator, power cable which helps in the power transmission. Chapter 2 electrical equipment and structure types. On a computer, save thermal images of each substation component and track temperature measurements over time. Iem power systems is a premier supplier of electrical equipment and substation packages.
Substation operation and maintentance alexander publications. To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and their main components. The service includes the analysis of test results, training, consultation and technical support. The following steps are involved in maintenance of circuit breakers.
This is the boundary between plant maintained by one company and plant maintained by another. The substation maintenance team at ross substation in vancouver, washington, is responsible for routine and emergency substation maintenance in the area. In simple terms, substation maintenance is a regimen of regular preventative checks and actions carried out to ensure substations are kept in good. Books about substations for the electric utilities industry and linemen. We offer high quality individual components or a whole package incorporating all key equipment required for a complete, integrated substation solution at competitive prices.
For such an operation, regular and detailed maintenance is necessary. Backup protection must then respond, and a larger section of the substation may become isolated. Maintenance, availability and reliability are closely related so that a level of maintenance should be specified to. In my last post about electrical substation, i discussed what is a substation, why we need substation and the most common components for an electrical substation.
Generally, the maintenance of equipment or systems. Substation layout substation layout single line diagram check. Tailored maintenance strategy to suit substation maintenance needs abb can provide support to enable optimized maintenance management strategies for substations. Part 1 also provides an overview of substation major equipment, explaining the mission, and arrangement of each component. Such maintenance results in outage of circuit and supply. Now i will discuss the classification of an electrical substation. With a substation maintenance services agreement, companies are assigned a field service engineer who works directly with them on a customized substation maintenance program tailored to their schedule and needs. Substation transformer installation, operation, and maintenance instructions and parts. Prepared by the subcommittee on the design of substation structures of the committee on. A good thermographic approach to substation maintenance is to create inspection routes that include all the substations owned by your utility or facility. High and medium voltage substation design, testing and maintenance training in london uk, dubai united arab emirates, kuala lumpur malaysia, istanbul turkey, france paris.
The land area required for a gis substation is in the order of 10% to 20% of that for an ais substation considering the switchgear bay. Based on a customers selected maintenance strategy, each set of equipment has its own set of detailed maintenance plans. Cold line means deenergided line in this case, maintenance work will be carried out under the conditions of no current and no potential i. Handbook on maintenance of electrical general services substation. Substation service inspection and condition monitoring guide photo. Classification of electrical substation an electrical engineer. Design guide for rural substations usda rural development. Classification of electrical substation an electrical. Substation transformer installation, operation and maintenance. Predictive maintenance in substations and switchgear ee.
This guideline is prepared in view of the requirements for switchyard service inspection visual and condition based maintenance of substation equipment, structures and other miscellaneous items in substations. Basic substation configurations and the components avo training. This is the other side of the lines, said dana mcclain, electrician foreman iii on the team. Maintenance of substation equipment operation of substation. Electric power systems have many ways to perform preventive maintenance. Passbooks study guide 4491 career examination series. Electrical general services substation is a distribution substation from which electric supply is distributed to the different users. Substation operation and maintentance heres a comprehensive reference on how to operate and maintain all the essential components of substations. An electrical substation can be classified according to its service, function, mounting and types of apparatus as installed below. The preventive maintenance is undertaken to ensure smooth and efficient working of a system, equipment. Maintenance strategies a more competitive market environment is forcing the utilities to rethink their repair and maintenance strategies for network and substation equipment. Handbook on maintenance of electrical general services. Maintenance basis utilizing the epri tier classification for the substation.
In order to acquire the necessary skills of the trade, the substation technician apprentice shall be provided with employment in the following categories. An introduction to electrical substations maintenance. During mid 1995 there was some thoughts that we were performing more maintenance than necessary on our transmission and substation equipment. Substation types electrical substation components scribd. Substation structure design guide provides a comprehensive resource for the structural design of outdoor electrical substation structures. Substation equipments are important components in power system.
This manual offers the most current guidelines available on analysis methods, structural loads, deflection criteria, member and connection design, structure testing, quality control, quality assurance. Manager transmission substation maintenance jobs, employment. Passbooks study guide 4491 career examination series national learning corporation on. A substation is a highvoltage electric system facility. Economic considerations, shows, point to the need for solutions which are capable to extend the lifetime of the equipment.
Substation operation and maintenance alexander publications. This is where demand is either added to or subtracted from the company substation supplying load defined in this operational, access and maintenance agreement. Preventative maintenance of substation equipment and transmission lines the advantage and life cycle cost analysis are generally considered before deciding for gis. Step up substation associated with generating station as the generating voltage is low. Classification of substations the substation is the medium of transferring the power from generating unit to the consumer end. It is used to switch generators, equipment, and circuits or lines in and out of a system. Paul guyer author see all 5 formats and editions hide other formats and editions. Apply to construction manager, distribution manager, engineer and more. Abb substation care 3 tailored maintenance strategy to suit substation maintenance needs abb can provide support to enable optimized maintenance management strategies for substations. There is a very limited number of books on this subject and that is why the substation automation handbook. Substations a substation is a highvoltage electric system facility. Transmission substation construction jobs, employment. In a substation there are numbers of incoming and outgoing circuits each having its isolator, circuit breaker, transformers etc.
258 1348 1550 263 92 417 1492 460 878 1659 1299 843 1650 1041 437 1355 1571 928 153 658 1571 4 1294 575 1013 1166 264 631 105 1391 1132 1078 1027 547