The single line diagram of an 11 kv substation is shown in the figure below. 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. 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. 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. Etaps one line diagram provides complete busbreaker connectivity, allowing you. Themes can be color coded based on standard, voltage level, area, ground, earthing, and grounding by ground switch. In this respect the process interface given by the switchgear has to be. Numbers of breakers, disconnect switches, transformers, auxiliaries, protective devices, lines and other equipment.
The primary switch must be able to break the transformer excitation current. The single line diagram makes the system easy and it provides the facilitates reading of the electrical supply and connection. In selecting the single line diagram for a substation its requirements from the point of view of the following should be considered. Gas insulated substation definitions and basics course no. Pdf substation design manual shally gupta academia. A architectural wiring diagram the architectural wiring diagram can be referred to as a oneline diagram. A single line drawn on these diagram wills always indicate at least two conductors. Section 4 is the load flow analysis of the substation. Load flow analysis of 2 kv substation using etap software.
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. Depending on the load being served, it is possible that initial construction may be limited to one distribution circuit. This functionality allows the user to place a userconfigurable color map behind the oneline diagram. 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. Section 6 is the load flow analysis of the substation with an improvement to surmount. This type of connection is commonly employed at the substation. Electrical design of 233kv substation line diagram. A mini project operation and maintenance of a 2202 kv. With these approaches the expertise shall confront. One or more or all of the below referred works are envisaged to be carried out under each package. Pdf classification of substation singleline diagrams. Technical specification construction of 3311 kv primary substations. Section 5 contains the alert summary report generated after load flow analysis.
B substation standards switching diagram operating numbers bus configuration. Collector system one line partial collector system site plan. Transmission line standards aerial patrol warning signs and marker ball marking 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. This is because the diagram shows multiconductor cables with a single line. Symbols for electrical and electronics diagrams of the american national standards committee y32, graphic symbols and designations. The ergon energy design philosophy is to provide substations.
As a layman view, sld is nothing but consisting of various components of the electrical system like, transformer, dg. Single line diagram of 3311 kv jampaijala for tender purpose only. The transformer may have differential relaying that trips all of the feeder breakers in the event of. The requirements in the design and other factors to be considered before the design as well. Gis substation design and execution hv and ehv gis. Set different themes for individual one line diagrams. Private substations can often be considered as terminal type substations, i.
This technical article describes single line diagrams of two typical power substations 6611 kv and 110. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. A substation is part of a system and not an entity to itself. 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. Lsis is producing gis, which is one of the major equipment used in the high voltage substation in densely cities. Single line diagram of 3311 kv jampaijala for tender. Please note that the evaluation will be carried out on the strength of. 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. 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. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Stardelta transformer connection is commonly employed for power supply transformers. 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. A special class of distribution substation would include a dedicated customer substation.
These substations may be supplied radially, tapped from a subtransmission line, or may have two sources of supply. Its emphasis is on communicating the functions of the power equipment and the associated protection and control system. Basic singleline diagrams for substations ieee journals. Typical electrical drawing symbols and conventions. Autocad, cadcam, solidworks, engineering, electrical engineering. Single line diagram maine buses desktop design projects desk blue prints busses.
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. Single line diagrams of substations 6611 kv and 110. Electrical oneline diagram trace software international. It includes information obtained from extensive research of current literature on the subject. 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. Electrical single line diagrampart one electrical knowhow. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. This substation would be similar to a distribution substation except that all of its capacity would be reserved for the service of one customer. 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. Single line diagram of 11kv substation autocad cadcam. 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. The working of the electrical equipment used in the substation is explained below in details.
Understanding substation single line diagrams and iec. In this video, we have demonstrated how to read and understand electrical single line diagram also called as power flow diagram. Single bus substation this is the one line of a single bus substation fed by a single radial subtransaission line. Diagram of user system for connection and mv switchgear. This paper proposes three approaches to classify substation single line diagrams so it can be used in a power distribution network expansion. To explain this easier, we have divided the single line into three sections. Each feeder must has its own overcurrent protection. Graphic symbols for electrical and electronics diagrams. Distribution substations michigan technological university. Design standards electrical schematic diagrams abstract this document provides standards for all electrical schematic diagrams for the lhc and its detectors.
Basic distribution substation figure 1 is a one line diagram for a simple distribution substation. It can then be completed with the help of a cad tool. The contractor shall finalize the layout arrangements in case of new substations in line with. The subtransmission circuit enters the substation through a primary disconnect switch used principally to. This helps to keep the voltages and their paths straight. Lsis who has been a leader in electricity and automation. Urban substations are usually built in brick, whereas rural. A substation is a part of an electrical generation, transmission, and distribution system.
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