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 business of operating and maintaining their assets. Substation maintenance operation maintains, repairs, and replaces sf6 it equipment engineering developed the ems and sf6 gas evaluates sf6 gas equipmentassets management procedures. Perform insulation resistance, contact resistance on air, oil and vacuum breakers, and tank loss index on oil circuit breaker and vacuum bottle integrity tests on. Pdf maintenance and operation of an electrical substation. Provide system maintenance schedules, as appropriate. Heres a comprehensive reference on how to operate and maintain all the essential components of substations. Preliminary operation before preventive maintenance 1 visual inspection of electrical equipment inside substation 2 thermoscan an electrical equipment inside substation before and after preventive maintenance 6 dr. This course provides an overview for apprentices, technicians and engineers responsible for the maintenance and testing of industrial and utility substations. Solutions for electrical substation maintenance a well planned electrical substation maintenance assures reliable supply and reduction in failures. Substation maintenance and work procedures thomson bridges subject matter experts and engineers have extensive experience in developing maintenance and work procedures. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Maintenance procedures and work practices thomson bridge.
Sacramento municipal utility district, section 10, transmission substation equipment maintenance details, may 1, 2004. Substation maintenance procedures r1 free download as pdf file. Thomson bridges subject matter experts and engineers have extensive experience in developing maintenance and work procedures. Minimum requirements for maintenance of transmission and zone. A power transformer requires various routine maintenance. Modernisation of transmission system in msetcl jaolikar s. Handbook on maintenance of electrical general services substation. 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. Operation and maintenance of protective relays and associated circuits 5c. Handson labs are a major part of this course to help the technician locate weak or faulty components in the substation systems. Maintenance procedures schedules 38 72 145 170 pm and pmi interrupter theory and mainte. This procedure establishes safe working practices for handling sulfur hexafluoride sf6 gas and release minimization practices.
Include procedures for creating and updating maintenance reports. A mini project report on operation and maintenance of 2202kv substation submitted in partial fulfillment for the award of the degree of. Nov 17, 2019 a power transformer is the most costly and essential equipment piece of equipment within an electrical substation. Protection system maintenance a nerc technical reference page 2 purpose. Our customers for substation safety equipment regularly pose questions relating to safety protection during substation operation and maintenance. Substation operation and maintentance alexander publications. Improving substation maintenance best practices for greater success. 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. Mediumvoltage circuit breaker maintenance and testing methods.
Today well be using our industry and utility experience, but your engineering firm, the. Standard for an electrical preventive maintenance epm program. Standard for an electrical preventive maintenance epm program page 210 andor connectors are used together, examine connections for signs of galvanic action. Course focus is on medium voltage circuit breakers air. Test area is isolated and it is safe to carry out test. Maintenance and troubleshooting of ups systems and. The checklists are in pdf format and can be completed electronically or printed and used as hard copy. Substation types, applications, components and safety procedures. Feb 29, 2016 our customers for substation safety equipment regularly pose questions relating to safety protection during substation operation and maintenance. To ensure all transmission and generation protection systems affecting the reliability of the bulk electric system bes are maintained and tested. Describe procedures for maintaining the file system.
The mission of femp is to facilitate the federal governments implementation of sound, cost. Substation maintenance tasks expand with smepas system. A mini project report on operation and maintenance of 220 2kv substation submitted in partial fulfillment for the award of the degree of. Safety procedures formulated to meet requirements outlined in nesc and other standards go a long way in making substations more secure against known hazards and triggers. Medium voltage service medium voltage service maintenance. Instruction sheet ms28 maintenance of electrical switchgear tl4. In todays competitive market scenario power utilities are under tremendous pressure to cut down their maintenance costs as they form a significant portion of the operation costs. Electrical general services substation is a distribution substation from which electric supply is distributed to the different users.
Operation and maintenance of protective relays and. Ensure the comfort, health, and safety of building occupants through properly functioning. Apply an antioxidant compound to all aluminumto copper connections. The survey is intended to understand the current practices and procedures and to.
Substation operation and maintenance policy and procedures som substation maintenance manual c. Preventive maintenance of substation equipment and. Purpose and scope this procedure establishes safe working practices for handling sulfur hexafluoride sf6 gas and release. Additionally, electric utilities were faced with high costs associated from unfinished materials waste, downtime to the process, and increasing insurance premiums. Note the cleanliness, terminals, earth connections, readings of counters, levels of quenching medium in case of oil circuitbreaker, pressure of quenching medium in case of sf 6 circuit breakers etc. Maintenance procedures schedules 38 72 145 170 pm and pmi interrupter theory and maintenance interrupter removal. 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, applications, components and safety procedures mediumvoltage circuit breaker maintenance and testing methods perform insulation resistance, contact resistance on air, oil and vacuum breakers, and tank loss index on oil circuit breaker and vacuum bottle integrity tests on vacuum breaker. Spectrums complete substation maintenance and repair services. Conirm the design life expectancy of equipment is achieved.
Safety and protection of equipment as well as working personnel is also a considerable factor. Disconnect switches in a gis installation are used for the same function as those in an air insulated substation ais. Fist procedures, practices, and schedules that appear in black bold and bracketed text are considered. Fist procedures, practices, and schedules that appear in black bold and bracketed. The paper presents the results of a survey regarding substation maintenance. Currently, substation maintenanceregular or emergencyoperations and best practices must fit the utilitys goal of accomplishing more with less, in order to maximize assets and minimize outages.
Facilities instructions, standards, and techniques. Many failures can be detected during the electrical substation maintenance routines, reducing the risk of significant plant downtime, and preventing future problems. Operation and maintenance of a gas insulated substation. Works within established maintenance procedures and safety rules and. Describe procedures for installing and testing system updates and for moving installing the system updates to the operational environment. Guidelines for the substation maintenance electrician. Maintenance of ehv substation ieee conference publication. In simple terms, substation maintenance is a regimen of regular preventative checks and actions carried out to ensure substations are kept. The techniques procedures being adopted for both preventive maintenance and. Handbook on maintenance of electrical general services substation photo credit. Such scheme indicates the authority and responsibility of persons at various levels.
Rigging and heavy equipment 5 items knowledge of the sce safety procedures for operating grounding, rigging, and heavy equipment, including crane, hoist, derrick, and ropes. Our team members have held key and senior roles across multiple network companies including ausnet, transgrid, electranet, essential energy and ergonenergy and powerlink and. Substation maintenance engineers engineering managers substation supervisors asset managers training coordinators or managers. Handbook on maintenance of electrical general services. Superintending engineer testing and communication circle vashi, msetcl 2 rajurkar s. Maintaining substation reliability using an asset manageme. Substation maintenance best practices electricity today.
Minimum requirements for maintenance of transmission and zone substation equipment amendment no. Electrical inspection checklists this pdf contains 77 electrical inspection checklists taken from the 2014 electrical inspection manual with checklists. Maintenance and operation of an electrical substation of. Ms28 handbook maintenance of electrical switchgear tl4. Works on energized secondary voltage lines up to 480 volts and repairs and operates manual. Practical high voltage safety operating procedures for engineers and technicians practical electrical wiring standards national rules for electrical installations et 101. Increase the safety of all staff, as properly maintained equipment is safer equipment.
Marine pollution control developed work practices for the. They are applied to isolate different elements of the substation, such as circuit breakers, transmission lines, transformer banks, b uses, and voltage transformers. Maintenance basis utilizing the epri tier classification for the substation. Ensure that the connectors are properly used and installed in accordance with manufacturers specifications. Maintenance of transformers a detailed checklist electrical4u. Residential substations are a little more difficult to plan for and generally require switching the supply over to auxiliary. Lightening arresters, earthing of equipment and fencing is done for this purpose. A power transformer is the most costly and essential equipment piece of equipment within an electrical substation. For latest authorized version, please refer to the national grids infonet substation services web site substation maintenance electrical operating procedure a. 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. Follow the procedure provided by the equipment supplier. The following steps are involved in maintenance of circuit breakers.
Maintenance of a substation is essential to ensure uninterrupted electric supply to the using points which involves vigilance, care and welldefined scheme of procedures. When exposed to sustained or intense electrical arcs, sf6 gas decomposes to form sulfurfluoride. All rus borrowers rus electric staff effective date. In simple terms, substation maintenance is a regimen of regular preventative checks and actions carried out to ensure substations are kept in good working order. Pdf the continuity of electric supply is an important requirement in modern. Substation maintenance engineers engineering managers. Theres no one answer to a perfect substation maintenance. Substation maintenance electrician apprenticeship 1. The substation maintenance crews are responsible for regularly maintaining all the equipment in our stations, as well as transformers, motoroperated switches, battery banks and substation control buildings. Maintenance carried out at predetermined intervals or. Department of energys federal energy management program femp.
Preventative maintenance of substation equipment and transmission lines the advantage and life cycle cost analysis are generally considered before deciding for gis. Major substation maintenance involves more planning and is generally handled on a quarterly basis. Today we ll be using our industry and utility experience, but your engineering firm, the. The results of the survey revealed that the utility follows a timebased ma intenance concept. Additional information these instructions cannot cover all details or variations in the equipment, procedures, or process described, nor to provide directions for meeting every possible contingency during installation, operation, or maintenance. We do routine inspections, make repairs and paint equipment as needed. This approach is based on the firm belief that the costs sustained for downtime and repair in case of fault are lower than the investment required for a maintenance programme. As such it is desirable to perform various preventative maintenance activities to ensure the transformer maintains a high level of performance and a long functional life. Sep 30, 2019 preventative maintenance of substation equipment and transmission lines the advantage and life cycle cost analysis are generally considered before deciding for gis. Pdf maintenance and operation of an electrical substation of 220. Substation maintenance technician city of boulder city. Not surprisingly, many workers who performed routine testing and maintenance procedures in highvoltage substations experienced serious and, in some instances, fatal injuries. Substation transformer installation, operation and. In a substation there are numbers of incoming and outgoing circuits each having its isolator, circuit breaker, transformers etc.
There are a number of hazards unique to substations. Apply to designer, works manager, senior electrician and more. A final report, including a description of test procedures followed by findings and. Sf6 equipment maintenance, repair, and replacement and. Considering the fact that the entire premise is rife with potential electrical and chemical hazards, even the slightest negligence can prove damaging. Standard for an electrical preventive maintenance epm. Maintenance carried out following detection of an anomaly and aimed at restoring normal operating conditions. In the case of industrial installations, these procedures are often carried out during plant maintenance shutdowns. A survey on the substation maintenance practices in a saudi electric utility was carried out. Schweitzer engineering laboratories sel, philosophies for testing. Solutions for electrical substation maintenance smc.
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