Substation and high voltage installations exceeding 1 kv a. Pdf the real system from practice is selected for optimization purpose in this paper. November this offer can only be applied to courses registered after october 17, 2017 and attended on or before november 30, 2017. High speed earthing switches are used to different active earth substation elements, such as transmission lines, transformer banks, and main buses. The use of rtv silicone rubber coatings article pdf available in journal of electrical engineering 112. High voltage switchgear operation, maintenance course. It has also to ensured that high voltage and low voltage windings are isolated along it has also to ensured that high voltage and low voltage windings are isolated along with the concerned isolators. Substation equipment maintenance, tests and checkings electrical. Solutions for electrical substation maintenance a well planned electrical substation maintenance assures reliable supply and reduction in failures.
A substation is an electrical system with highvoltage capacity and can be used to control the apparatus, generators, electrical circuits, etc. Basics, maintenance, and diagnostics vii contents continued page 4. High voltage substation question for electrical engineer interview. Medium voltage service medium voltage service maintenance. There is numerous electrical substation components like outgoing and incoming circuitry each of which having its circuit breakers, isolators, transformers, and busbar system etc for the smooth functioning of the system. Maintenance optimization of highvoltage substation model 159 a fuse compression disconnector fcd, a circuit breaker cb, a transformer of own consumption toc, a current transformer ct, a voltage transformer vt, 2a source transformer 11022 kv t. Reliability of substation configurations daniel nack, iowa state university, 2005. All rus borrowers rus electric staff effective date. This training course will present the knowledge essential for the medium voltage and high voltage switchgear operations and switchgear design. Handson labs are a major part of this course to help the technician locate weak or faulty components in the substation systems.
Many failures can be detected during the electrical substation maintenance routines, reducing the risk of significant plant downtime, and preventing future problems. 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. Substation transformer installation, operation, and maintenance instructions and parts replacement information coope ower effective june 2016 series supersedes s2101510 february 20 substation transformers mn202002en. Pco project close out pia project initiation advice pss project scope statement psr protection setting request qecmm queensland electricity connection and metering manual. It will enable them to understand operations and maintenance of medium and high voltage circuit breakers and switchgears.
The high and medium voltage transformers in your substation require regular inspection, testing, and maintenance. The size of the battery bank is depending on the voltage required for operation of the dc circuit respectively. Distribution substations michigan technological university. Organization will perform maintenance of loop power line breakers. Solutions for electrical substation maintenance smc. This test is the simplest and is being widely used by the electrical utilities. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. They transform voltage from high to low, or vice versa, and provide the ties, transformation, switching and protection of the transmission and distribution systems. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Siemens highvoltage substations with airinsulated switchgear ais are the costefficient choice for rated voltages of up to 800 kv. Theres no one answer to a perfect substation maintenance. Extra high voltage system standard r586386 version 1. The simplest case is where all transmission lines have the same voltage.
Voltage controlpower factor correction devices such as capacitors, reactors or static var compensators 3. Course focus is on medium voltage circuit breakers air. Electrical substation design, testing and commissioning. Neta 1 standard mts2007 appendix b presents the timebased maintenance schedule and matrix shown in table 3.
In the arrangement shown, the circuit must be deenergized to perform breaker maintenance, which can be overcome by the addition of breaker bypass switches, but this may then. The transformation and switching station is generally known as a substation which is further elaborated below. This offer cannot be used towards courses already purchased or added to any other existing discounts. Highvoltage substations highvoltage power transmission. This training course will present a comprehensive capsule of all the knowledge essential for the medium voltage and high voltage switchgear operations and walk the participants through the switchgear design process using a set of interlinked case studies.
A failure of only one substation equipment can cause a grid collapse, which may cost a large time and money to solve, so that the substation maintenance programs limit the risk of unexpected outages by identifying and preventing potential problems. The substation design manual is not intended to replace asset management standards, but rather. Improving substation maintenance best practices for greater success. Some types of substations are tiny in size with an inbuilt transformer as well as related switches. The following suggestions are for use in conjunction with the manufacturers instruction books for the. The need of keeping the reliability of power systems requires suitable substation maintenance. Therefore, for maintenance of such voltage levels and deliverance of stability numerous switching stations and transformation stations are created amid consumer ends and electrical power generating stations. Extra high voltage system standard approval for a deviation to this standard may only be accorded if it does not reduce the quality of workmanship, pose a safety risk to personnel or equipment and does not deviate from the intent of this. Substations are an important part of the electrical generation, transmission and distribution system.
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. Substation transformer installation, operation and. In such cases, substation contains high voltage switches that allow lines to be connected or isolated for fault clearance or maintenance. Substation interview questions answers engineering tutorial. High and medium voltage substation design, testing and. Maintenance of transformer power transformers maintenance. All of the pertinent accessories of the transformer, including the load tap changers ltc, lighting arrestors, pressure relays, and bushings will be cleaned and tested for the most optimal and comprehensive test results.
The siemens experts always consider the electrical parameters as well as the environmental conditions to which a. Pdf maintenance optimization of high voltage substation model. Substation maintenance technician city of boulder city. Substation engineering ais and gis substations beta. Substation maintenance i substation maintenance ii when registering use promo code. Maintenance and operation of an electrical substation of. Dec 25, 2018 some of the important substation parts such as emergency lighting, relay system, and automated control circuitry are operated through batteries. Apply to electrician, low voltage technician, helper and more.
Works on energized secondary voltage lines up to 480 volts and repairs and operates manual. Substation configuration reliability 1 reliability of substation configurations daniel nack, iowa state university, 2005 introduction while one of the strongest points in a power system is the electric substation, it still contains what could be described as weak points or points of failure that would lead to loss of load. A mv lv transformer electrical substation consists, therefore, of the set of devices dedicated to the transformation of the voltage supplied by the distribution network at medium voltage e. A mini project report on operation and maintenance of 220 2kv substation submitted in partial fulfillment for the award of the degree of. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. With your download, get the 23 best papers relevant to this one, including 17 top related papers. Highvoltage substation equipment for utility distribution grids. Transformers to convert between two transmission voltages, 2. The objective of the paper is formulate such a maintenance strategy for the hv substation 11022.
A transmission substation connects two or more transmission lines. Lcf local control facility lv low voltage exceeding 50 v a. When a highvoltage cable is terminated for a connection to a circuit or equipment in a substation or switchyard, the termination must also be made to exact specifications. High voltage substations are points in the power system where power can be pooled from generating sources, distributed and transformed, and delivered to the load points substations are interconnected with each other, so that the power system becomes a meshed network. Bushing wells shall be externally clamped and in accordance with ieee 386. Dead front high voltage terminations and equipment conforming to ieeec57. The electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. High speed earthingswitches have an extra capability of closing an energized conductor, creating a short circuit without experiencing major damage to the switch or the enclosure. This is skilled electrical work in the maintenance and operation of high. Dead front highvoltage terminations and equipment conforming to ieeec57. Substation equipment maintenance and checkings photo credit.
Substation maintenance best practices electricity today. Technical guide the mvlv transformer substations abb group. This course provides an overview for apprentices, technicians and engineers responsible for the maintenance and testing of industrial and utility substations. In case transformer is having a tertiary windings, ensure the isolation are. High voltage substations are points in the power system where power can be pooled from generating sources, distributed and transformed, and delivered to the load points. Medium voltage products technical guide the mvlv transformer. Highvoltage cables are manufactured to exact specifications so that they can withstand a variety of mechanical and electrical stresses. High voltage substation maintenance condition report december 2019 page 1 of 3 please email the completed form to substation. Dec 31, 2015 questions about substation and transmission.
Maintenance activities may be planned for each segment of the installation at different periods, but major industries usually once or twice a year have a global shutdown for maintenance purposes. For maintenance clearances gis substation are considered safe and complies with all recommended guides gis pdf \generallayoutgis. Pdf maintenance and operation of an electrical substation of 220. Pdf maintenance and operation of an electrical substation. The substations are mainly used to convert ac alternating current to dc direct current. Siemens high voltage substations with airinsulated switchgear ais are the costefficient choice for rated voltages of up to 800 kv. Substations are interconnected with each other, so that the power system becomes a meshed network. Most of the equipment in a sub station is provided with sufficient insulation from breaking down, yet others like bus bars, terminations of high voltage equipment, the equipment connected to takeof structures etc. A substation is a part of an electrical generation, transmission, and distribution system. They are renowned for highest reliability, economical operation, and low maintenance requirements. Apply to helper, designer, senior electrician and more. High speed earthing switches are used to different active earth substation elements. The account manager and primary services will coordinate the arrangements between the customer and dte for the installation of the high voltage lines feeding the substation and for the. High voltage substation maintenance condition report.
64 183 629 1340 890 350 600 922 1179 898 1141 706 494 733 1252 1029 1399 998 1314 50 1581 599 796 448 1031 19 577 1439 1271 476 1336 1494 1273 1408 521 768 702 1074 52 289