The single line diagram makes the system easy and it provides the facilitates reading of the electrical supply and connection. This course is based on terms used in ieee and iec regulations. 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. Single line diagram of 11kv substation autocad cadcam. Diagram of user system for connection and mv switchgear. The one line diagram is similar to a block diagram except that electrical elements such as switches, circuit breakers, transformers, and capacitors are shown by standardized schematic symbols. A architectural wiring diagram the architectural wiring diagram can be referred to as a oneline diagram.
Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Single line diagram sld the single line diagram sld is the most basic of the set of diagrams that are used to document the electrical functionality of the substation. The contractor shall finalize the layout arrangements in case of new substations in line with. A substation is part of a system and not an entity to itself. Substation standards switching diagram operating numbers bus configuration 6. Technical specification construction of 3311 kv primary substations. This type of connection is commonly employed at the substation. With these approaches the expertise shall confront.
The subtransmission circuit enters the substation through a primary disconnect switch used principally to. It includes information obtained from extensive research of current literature on the subject. Basic distribution substation figure 1 is a one line diagram for a simple distribution substation. Collector system one line partial collector system site plan. The one line diagram can be printed or exported to the pdf or dwg format either on a single drawing or in the form of folios. Its emphasis is on communicating the functions of the power equipment and the associated protection and control system. Themes can be color coded based on standard, voltage level, area, ground, earthing, and grounding by ground switch. The transformer may have differential relaying that trips all of the feeder breakers in the event of. Set different themes for individual one line diagrams. A substation is a part of an electrical generation, transmission, and distribution system. This is because the diagram shows multiconductor cables with a single line. Private substations can often be considered as terminal type substations, i. Transmission line standards aerial patrol warning signs and marker ball marking diagrams.
In selecting the single line diagram for a substation its requirements from the point of view of the following should be considered. Typical electrical drawing symbols and conventions. Substation design hello all acade gurus, i am a college student and i have been given a project to design a substation single line diagram and plan layout on autocad with predefined specifications busbar schemes, lines, etc i am new to autocad and i have few questions about it. Single line diagram of 3311 kv jampaijala for tender purpose only. Electrical design of 233kv substation line diagram. This paper proposes three approaches to classify substation single line diagrams so it can be used in a power distribution network expansion. Symbols for electrical and electronics diagrams of the american national standards committee y32, graphic symbols and designations. Load flow analysis of 2 kv substation using etap software. Electrical single line diagrampart one electrical knowhow. Single line diagram of 11kv substation i want the attached picture to be made perfectly on autocad or related software so that, i can print the electrical single line diagram out. Section 6 is the load flow analysis of the substation with an improvement to surmount. These substations may be supplied radially, tapped from a subtransmission line, or may have two sources of supply.
Design standards electrical schematic diagrams abstract this document provides standards for all electrical schematic diagrams for the lhc and its detectors. The requirements in the design and other factors to be considered before the design as well. Urban substations are usually built in brick, whereas rural. The substation component of the project will be based on the arcadia single line diagram see 5. In this respect the process interface given by the switchgear has to be. Single line diagrams of substations 6611 kv and 110. Single line diagram of 3311 kv jampaijala for tender. Depending on the load being served, it is possible that initial construction may be limited to one distribution circuit. Graphic symbols for electrical and electronics diagrams. Electrical singleline diagram the etap one line diagram is a userfriendly interface for creating and managing the network database used for schematic network visualization. Autocad, cadcam, solidworks, engineering, electrical engineering. In this video, we have demonstrated how to read and understand electrical single line diagram also called as power flow diagram.
One or more or all of the below referred works are envisaged to be carried out under each package. Several crucial terms are for better understanding of the presented material. Pdf classification of substation singleline diagrams. When interpreting a single line diagram, you should always start at the top where the highest voltage is and work your way down to the lowest voltage. As a layman view, sld is nothing but consisting of various components of the electrical system like, transformer, dg. Electrical oneline diagram trace software international. Single line diagram maine buses desktop design projects desk blue prints busses. This functionality allows the user to place a userconfigurable color map behind the oneline diagram. This substation would be similar to a distribution substation except that all of its capacity would be reserved for the service of one customer. 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.
The ergon energy design philosophy is to provide substations. Gas insulated substation definitions and basics course no. The working of the electrical equipment used in the substation is explained below in details. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. The basis for any substation automation specification remains the single line diagram of the substation to be controlled, protected and monitored as well as the allocation of functions to the switchgear objects. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. The single line diagram sld in figure 1 shows the khimti kathmandu 220400 kv transmission line and illustrates how barhabise, laphsiphedi and changunarayan grid substations are interconnected in order to enable transmission supply at 2 kv and eliminate the ongoing shortage of energy in kathmandu valley. Please note that the evaluation will be carried out on the strength of. Numbers of breakers, disconnect switches, transformers, auxiliaries, protective devices, lines and other equipment. Stardelta transformer connection is commonly employed for power supply transformers.
Understanding substation single line diagrams and iec. A single line drawn on these diagram wills always indicate at least two conductors. Section 4 is the load flow analysis of the substation. A mini project operation and maintenance of a 2202 kv. This technical article describes single line diagrams of two typical power substations 6611 kv and 110.
89 line switch 90 regulating device 91 voltage directional relay 92 voltage and power directional relay 94 tripping or tripfree relay b bus f field g ground or generator n neutral t transformer. B substation standards switching diagram operating numbers bus configuration. To explain this easier, we have divided the single line into three sections. Single bus substation this is the one line of a single bus substation fed by a single radial subtransaission line. The primary switch must be able to break the transformer excitation current. A special class of distribution substation would include a dedicated customer substation. Normally, a power system is designed so that the effects of an outage caused by the failure of a single component such as a transformer, transmission line, or distribution line will result in minimal interruption of service and affect the fewest customers possible. The single line diagram of an 11 kv substation is shown in the figure below. This helps to keep the voltages and their paths straight. Each feeder must has its own overcurrent protection. Distribution substations michigan technological university.
Basic singleline diagrams for substations ieee journals. Section 5 contains the alert summary report generated after load flow analysis. Lsis who has been a leader in electricity and automation. This manual on electric power distribution systems is one of a series developed to aid utility supervisory personnel at shore establishments in the performance of their duties. Gis substation design and execution hv and ehv gis. Pdf substation design manual shally gupta academia. It can then be completed with the help of a cad tool. Lsis is producing gis, which is one of the major equipment used in the high voltage substation in densely cities. There has been close cooperation between the industry and dod representatives to provide one standard that can be universally used, rather than separate documents with their tendency to differ in various respects. Etaps one line diagram provides complete busbreaker connectivity, allowing you.
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