Clarification of the distance between the substation and other buildings to prevent noise nuisance, fire risk and the effects of emf section 5. Basic substation layout incoming subtransmission lines electric power path through substation outgoing distribution lines lightning arresters airbreak switches stepdown transformer distribution bus cutout switches oil circuit breaker voltage regulators metalclad switchgear control house. The electrician broke his upper right arm when the. To overcome the under voltage at the 11kv, 33kv feeder buses and 2 kv buses capacitor bank of suitable ratings are added. Technical specification construction of 3311 kv primary sub. The mining substation are very special type of substation and they need special design construction because of extra precautions for safety needed in the operation of electric supply.
Design study for 3311 kv substation, distribution and protection in the city of kenya. D substation standards control switches escutcheons, lamps and developments 61. Pdf personnel safety cum consistency is the important consideration in the functioning of the power systems. Between the generation and distribution, the voltage may vary through several substations. Abstract the thesis deals with the analysis of construction of power lines and substation switchyard of 3311 kv. The authorised electrician undertook remote switching of an 11kv oil circuit breaker ocb at the main substation. Generally 11 kv and sometime 33 kv substation are of this type. The substation would be a combination of switching, controlling, and voltage stepdown equipment arranged to reduce subtransmission voltage to primary distribution voltage for residential, commercial, and industrial loads.
The manual is applicable for all substation projects regardless of internalexternal design delivery mode. Electrical substation components list diagram, working. What is a electrical substation definition, layout, and. The layout of the substation is very important since there should be a security of supply. Design study for 3311 kv substation, distribution and protection in. Design of groundmat for 11kv substation using auto grid pro. Substation layout electrical substation electricity. Compliance with all technical requirements all energize elements comply with the required clearances clearances verify compliance with the last requirements of the national electrical safety code or prepa diseno subw\copy of svc subst profile 2. The following are the general substation layout diagram. A new 2 11kv zone substation is to be designed, constructed. Scholar, electrical and electronics engineering department, aisect university bhopal, mp, india. Stability of the system, reliability of power depends on the type of layout chosen and components used in the sub stations. Some designs achieve minimum emf emission by installing the low voltage cables and switchboard in a trench down the middle of the room. The substation design manual is not intended to replace asset management standards, but rather.
Single line diagram of 3311 kv jampaijala for tender purpose. They step down the ehv to hv as per the requirement of the customers. Dec, 2018 a circuit breaker is connected between the 11kv busbar and each incoming and outgoing circuit with the support of the isolator being provided on each side of the circuit breaker. Downer was engaged by ausgrid to design and construct the strathfield south 2 11kv substation at 79 dunlop st, strathfield south nsw. E substation standards transformer sudden pressure relay schematic diagram 62. Nov 14, 2011 key diagram 11kv400v i the 3phase, 3wire 11 kv line is tapped and brought to the gang operating switch installed near the substation. Figure 6 existing substation with single bus hv 11 kv. Design,supply,manufacturing,erection, te 211 kv substation with sas at i. Oil circuit breaker explosion engineering and technology. 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. Electrical power substation engineering and layout.
Existing and proposed single line diagram for 3311 kv. The purpose of the new zone substation at strathfield south is to address asset condition issues at enfield zone substation. The 3phase, 3wire 11 kv line is tapped and brought to the gang operating switch installed near the substation. Sirius substation preliminary design report rev0 july 2015. This paper is more focused on the design of earthmat for a 11kv substation. The earthing layout drawings shall show placement and height of lightning spires, and any lightning shield wires, and all connections to earth. This bulletin is an update and revision of previous rea bulletin 651, design guide for rural substations revised june 1978. Western power distribution is the electricity distribution network operator for the midlands, south wales and the south west. Substation layout free download as powerpoint presentation. Western power distribution substation construction. Guidelines for substation and power distribution systems. The single line diagram of the substation is simulated in etap based upon actual data, and it is seen that at the 11kv, 33kv feeder buses and 2 kv buses there is under voltage. Different layouts for substation radial, tapped, lilo. Technical specification construction of 3311 kv primary substations.
Electrical switchyard is usually a part of substation where electricity is transferred from one voltage to another for the transmission and distribution purpose. In an ideal substation all circuits and equipment would be duplicated such that following a fault, or during maintenance, a connection remains available. The two primary distribution feeders of the substation illustrated in figure 1 are protected by either power circuit breakers or automatic circuit reclosers. Design study for 3311 kv substation, distribution and. The lightning layout report shall show the calculations that demonstrate compliance with the 24 m rolling sphere. Pdf single line diagram of substations pankaj choudhary. Design of 6611kv, 20mva substation before the ratings of various items of equipments in a substation are chosen and their locations in the substation decided it is necessary to draw a single line diagram, also called key diagram. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment. Single line diagram of 11kv substation substation provides the energy supply for the local area in which the line is located. Substation substation a station in the power transmission system at which electric power is transformed to a conveniently used form. You can contact us 24 hours a day, 7 days a week, 365 day a year. Verify the integrity of the substation earthing system. The main function of the substation is to collect the energy transmitted at high voltage from the generating station and then reduce the voltage to an appropriate value for local distribution and gives facilities for switching. Introduction sub stations are important link between generating stations and distribution networks.
Key diagram 11kv400v indoor substation iiteeeestudents. Single line diagram 33kv11kv substation in hindi youtube. Geographical location 2 project specific requirements there will be no available 3 phase ac supply on site during the construction phase, as this is a new. I want all the equation which is not shown in pdf file of design study for 3311 kv substation, distribution and protection in the city of kenya so what can i do. The ocb exploded, probably due to mechanical failure, and the resultant blast wave blew off the doors of the substation, and seriously damaged the building.
Hence great care has to be taken to select the layout and. Design,supply,manufacturing,erection, te sting and. Key diagram of substation key diagram of 11kv400v indoor. Different layouts for substation the substation is the part of an electrical supply system which transmits the high voltage from the generating substations to the local distribution networks. Technical guide the mvlv transformer substations abb group. Pdf design of groundmat for 11kv substation using auto grid pro.
Dec 25, 2018 the electricity substation is a network of electrical equipment which is connected in a structured way in order to supply electricity to end consumers. Sirius 2kv substation preliminary design report document number revision no date page pdf. C substation standards typical duplex switchboard surge suppressor networks detail layout 60. Technical specification construction of 3311 kv primary. The requirements in the design and other factors to be considered before the design as well as the beme for the design. Eds 073101 predesign requirements for secondary substations.