Substations customers need rehabilitation of a more than 40 year old 220110kv ais substation first turnkey project on transmission level the power transfer russia europe requires the reenforcement of the 400kv grid with a maximum degree of availability and economy abbs response turnkey 220kv gis and 110kv pass substation. Description of change pages sections modified approver initials. Primary and secondary electrical distribution systems critical facilities round table 12th quarterly membership meeting june 2, 2006 david d. Customer end user guide to creating mvlv electrical substations cei en 619361. Distribution substations may also be the points of voltage regulation. This allows for the control of power flows in the network and general switching operations for maintenance purposes. A stepbystep guide to building a traditional double. To service a new double ended substation at the new building, a new ductbank system extended two new. Double ended substations with deadearthed neutral, pktpvr type. Use features like bookmarks, note taking and highlighting while reading substation structure design guide asce manuals and reports on engineering practice book. Most gis designs were developed initially for a double bus, sing le break. To service a new doubleended substation at the new building, a new ductbank system extended two new. Substation structure design guide provides a comprehensive resource for the structural design of outdoor electrical substation. Anyone know of a good book on substation design or power systems in general.
Westinghouse electric corporation, electrical transmission and distribution reference book. Thank you for subscribing to updates from schneider electric. A largerscale version of the secondary selective system is the transformer sparing scheme. C2 appendix c table of contents substation drawings singer substation drawing no. University of california san francisco medical center design guidelines june 2015 electrical 1 section 26 electrical division 26 electrical table of contents 261 introduction. This new more compact design is able to be installed indoors or outdoors in fire rated or nonfire rated environments, allowing the designer to look at the application of power to a unit substation certified for any installation double ended. Shortly after awarding schneider electric this order, the agency submitted a change order to upgrade to hvlcb metal enclosed switchgear. Eps was responsible for the design of the substation. Substation structure design guide asce manuals and. Covers the layout considerations, bus configurations, and electrical clearances.
The manual is applicable for all substation projects regardless of internalexternal design delivery mode. Prepared by the subcommittee on the design of substation structures of the committee on electrical transmission structures of the structural engineering institute of asce. A substation standards switching diagram operating numbers bus configuration 6. This document outlines the primary design standard for transgrid substations. Consult university project manager for power sources b. The first requirement of any substation design is to avoid a total shutdown of the substation for the purpose of maintenance, or due to fault somewhere out on the line. The consumer substation from which the energy is distributed at the fedin line voltage medium voltage. There are two sources that feed two loads but there is the added redundancy with. Such principles, if followed, will provide a soundly executed design. The substation design manual is not intended to replace asset management standards, but rather. Sep 22, 2017 a largerscale version of the secondary selective system is the transformer sparing scheme.
This book is a reference book for academia, substation design. 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. Switching schemes will be categorized in accordance with this categorization. An example of the above arrangement is the double ended substation or dualfed switchboard. Single busbar, double busbar and breaker and a half switchyards up to. Safety considerations a substation should be safe for the general public and for operating and maintenance personnel. Covers the general design considerations, documents and drawings related to designing a substation. Loading considerations when paralleling transformers it can be seen by using equations 1 and 2 below, that if the percent impedances in each transformer are the same, as shown in figure 1, that there will be equal current division and load sharing on each transformer. E substation standards switch operating platforms steel design and details 48. The oneline diagram defines the design parameters and scope of the designa road map. The following current and former members of the substation subcommittee of.
In this system, each transformer secondary is connected in a typical doubleended unit substation arrangement. The ergon energy design philosophy is to provide substations. It essentially replaces double ended substations with single ended substations and one or more sparing transformer substation. Horizontally mounted doublebreak switch with grounding switch. These large stations typically serve as the end points for transmission lines. To better understand the importance of electrical substations, lets start with a.
Moffittlong double ended substation hcmh, hcmh2 and hcml. It essentially replaces double ended substations with single ended substations and one or more sparing transformer substation, all of which are interconnected on a common secondary bus. Substation structure design guide provides a comprehensive resource for the structural design of outdoor electrical substation structures. For the required configuration of university substations see standard electrical detail 2611 for single ended substations and standard electrical detail 2612 for double ended substations. This book contains information obtained from authentic and highly regarded sources. Covers bare conductors, rigid and strain bus design. This book is part of the electrical engineering handbook series published by taylor. Unit substation assemblies shall be configured as single ended or double ended and consisting of primary sections, transformer sections, and secondary voltage distribution sections. Each of the three 230kv switchyard locations is double ended meaning that even though there are only three main substations, each substation contains switchgear that has an a bus and a b bus with a.
Manual for transmission lines and substation construction and. Unit substation assemblies shall be configured as singleended or doubleended and consisting of primary sections, transformer sections, and secondary voltage distribution sections. Double ended complete transformer substations are designed to receive, convert and distribute electric energy of threephase alternating current with the frequency 50 hz in systems with deadearthed neutral of transformer at the low voltage side. Our team has a thorough knowledge of substation design, as well as wealth of. Primary and secondary electrical distribution systems. When the decision is made to install a double ended substation you are most often dealing with critical loads. Substation from a european contractor abbs response 115 kv gis elk04 including. Design guide for rural substations usda rural development.
A substation standards switch operating platforms steel design and details 49. Covers the design of bus support structures and connectors. Design of electrical power supply system in an oil and gas. On standard dry types you can get 33% increase over base with cooling fans. Design and installation of medium voltage switchgear facts.
The safety and spacesaving features, along with the modular design. Applications and considerations ieee ced houston chapter 201220 oneline diagrams the oneline diagram is probably the single most important document in the substation design package. Each transformer in the double ended unit substation will be sized to serve approximately 6070 percent of the substation demand load linear and nonlinear before forced air cooling is initiated and 100% of demand load with forced air. This is an example of a redundant design incorporating a double ended unit substation with automated tie breaker controls. You might look at the fan cooled rating of the transformer. Unit substation arrangements federal pacific unit substation transformers meet a wide variety of application requirements with the highest degree of service reliability. Security of supply or substation service continuity is the main factor in selecting the switching scheme.
Retrofitting secondary substation transformers by david hart. Any of you size for 100% of the total building load or do some of you size for 70%80% of. In the customer substation, it normally consists of the step down transformer to lv. Design and construction specifications of the substation.
Curious as to how others designersengineers size the transfomers for a double ended substaion. Design of 233kv substation 1,sudipta sen, 2,arindam chatterjee, 3,debanjan sarkar 1. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Bus arrangements reliability cost of configuration available space. The substation consisted of two 14 mva transformers, two 8 kv breakers and nine 12. Anyone know of a good book on substation design or power. This bulletin provides a basic design guide and a reference tool. Substations feeding only a single industrial load may have minimal switching. A distribution substation transfers power from the transmission system to the distribution. For important substations a ring bus or double bus.
The substation design manual is not intended to replace asset management standards, but rather to act as a reference document that crossreferences existing standards and process documentation and plugs any gaps where asset management documentation does not exist. Eps was responsible for the design of the substation civil work, bus layout, grounding, and lighting. The double ended substation configuration shall be arranged for easy expansion from each end. Practical approaches include the employment and training of qualified.
Technical specification construction of 3311 kv primary substations. Double ended unit substation distribution systems will be designed for hospitals, medical centers and specially designated facilities. Primary fuses, secondary main breakers and secondary. Category 1 no outage necessary within the substation for either maintenance or fault. Specification engineer purpose retrofit projects are by their very nature undertakings that can become far more complicated, time intensive, and costly than might be expected or anticipated even by experienced field engineers. Type switchgear as part of a double ended substation lineup. Distribution substations michigan technological university. Drawing title 25251400 singer substation arrangement plan 25251401 singer substation sections 1 and 2. A small substation at the end of a radial subtransmission line that might be used to serve a small group of residences. 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. A load transfer switch coupling in the substation can form the property border between the supply company and the customer if the customer wants to develop his switchgear part independently. There are six common substation bus schemes that every test technician should understand. The various categories of buildings have many specific design challenges, but certain basic principles are common to all.
Design requirements use um master specification 261100, unit substations, as basis for design and specifying unit substations. Alternative to doubleended substations single common backup transformer service restored by opening dead bus main and closing tie operation can be made automatic transformers not paralleled so fault currents similar to radial location of substations limited must be clustered. The collector substation can also provide power factor correction if it is needed, metering and control of the wind farm. Download it once and read it on your kindle device, pc, phones or tablets. The two primary distribution feeders of the substation illustrated in figure 1 are protected by either power circuit breakers or automatic circuit reclosers. Thank you for registering for email from schneider electric. Substation switching schemes electrical engineering portal. Modern substation design 19 equipment under all weather conditions, and access roads into the site. Another method of allowing a distribution system to remain in service after the failure of one component is the secondary selective system.
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. The future substation design requires an understanding how both. These typically consist of two main protective devices and a tie device with each service transformers. Introduction to electrical systems for medical facilities. The oneline diagram defines the design parameters and scope of the design. In this practical project, the design of power supply in oil and gas refinery is investigated. Disconnectors shall be located to provide isolation on both sides of equipment and each end of lines for. Subsequent volumes will explore equipment, foundations, structures, grounding, relaying and other items necessary to design an electrical substation.
Collector substations also exist where multiple thermal or hydroelectric power plants of comparable output power are in proximity. The owner needs to give some direction on just how much capacity he wants if a transformer fails. As you can see, the overview is complex, but on the other hand the mvlv electrical substation is the synthesis of several design activities electrical, mechanical, construction. We offer high quality individual components or a whole package incorporating all key equipment required for a complete, integrated substation solution at competitive prices. Most gis designs were developed initially for a double bus, single break. Electrical distribution systems critical facilities round table 12th quarterly. Manual for transmission lines and substation construction. The main considerations taking into account during the design process are. Manual for transmission lines and substation construction and maintenance activities volume i best management practices volume ii permits. This material is made available on the basis that it may. The solution should be standard, commercial, offtheshelf solution, to meet general standardization requirements customary in the field of. The 21st century substation design power systems engineering.
Substation structure design guide asce manuals and reports. Pdf electric power substations engineering, third edition erlet. The normal service consists of an unusual double ended arrangement. Electric power substations engineering, second edition. Chan encyclopedia of life support systems eolss remote control facilities to enhance the security of supply.
Part 1 also provides an overview of substation major equipment, explaining the mission, and arrangement of each component. Pad mounted 5% less than substation design dry type transformers. Substation structure design guide asce manuals and reports on engineering practice book kindle edition by kempner jr. 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. This handbook covers design criteria for electric power distribution systems including basic data, overhead and underground distribution systems, submarine cable systems, and substations. Design guidelines and standards manual university of cincinnati medium voltage substation. In order to design the best distribution system, the system design engineer. The fence is connected to a separate grounding conductor.
Medium voltage products technical guide the mvlv transformer. Loading considerations when paralleling transformers. Each transformer in the double ended unit substation will be sized to serve approximately 6070 percent of the substation. To better understand the importance of electrical substations, lets start with a discussion about the structure of the power systems and their main components. It consists of two dead end poles to terminate the lines, two manual nonload break switches. Customer end user guide to creating mvlv electrical substations. Iem power systems is a premier supplier of electrical equipment and substation packages. Doubleended substations with deadearthed neutral, pktpvr type. In transmission network, the typical design concept is the n1 reliability application. Each transformer in the double ended unit substation will be. This chapter describes the principal substation layouts, the effects of advancements in substation equipment, modular design, compact substations, and the moves towards design and construction turnkey contract work. Fundamentals of modern electrical substations part 1. In these kinds of projects, the job is usually done in two main stages. Technical guide the mvlv transformer substations abb group.