Types Of Substations

different types of substations

1. Career point university Alaniya,kota TOPIC:- Types of substation SUBMITTED TO Mr. KAMAL ARORA SUBMITTED BY SAPNA SHARMA UID- K11598

2. What is substation ....? Types of substation Classification on types of substation Substation parts and equipment Contents

3. A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. The first substations were connected to only one power station substation

4. 1. Transmission substation 2. Distribution substation 3. Collector substation 4. Converter substations 5. Switching station 6. Railways TYPES OF SUBSTATION

5. A transmission substation connects two or more transmission lines. The simplest case is where all transmission lines have the same voltage. Transmission substations can range from simple to complex. The largest transmission substations can cover a large area with multiple voltage levels, many circuit breakers . 1 . Transmission substation

6. A distribution substation transfers power from the transmission system to the distribution system of an area. The input for a distribution substation is typically at least two transmission or sub transmission lines. 2. Distribution substation

7. In distributed generation projects such as a wind farm, a collector substation may be required. Collector substations also exist where multiple thermal or hydroelectric power plants of comparable output power are in proximity. Examples for such substations are Brauweiler in Germany and Hradec in the Czech Republic, where power is collected from nearby lignite-fired power plants. If no transformers are required for increase of voltage to transmission level, the substation is a switching station. 3. Collector substation

8. Converter substations may be associated with HVDC converter plants, traction current, or interconnected non-synchronous networks. These stations contain power electronic devices to change the frequency of current, or else convert from alternating to direct current or the reverse. 4. Converter substations

9. A switching station is a substation without transformers and operating only at a single voltage level. Switching stations are sometimes used as collector and distribution stations. A switching station may also be known as a switchyard,The function of the switching station is to isolate the faulted portion of the system in the shortest possible time. 5. Switching station

10. Electrified railways also use substations, often distribution substations. In some cases a conversion of the current type takes place, commonly with rectifiers for direct current (DC) trains, or rotary converters for trains using alternating current (AC) at frequencies other than that of the public grid. Sometimes they are also transmission substations or collector substations if the railway network also operates its own grid and generators. 6. Railways

11. The substations can be classified in several ways including the following : 1 Classification based on voltage levels A.C. Substation : EHV, HV, MV, LV; HVDC Substation. 2 Classification based on Outdoor or Indoor Outdoor substation is under open skv. Indoor substation is inside a building . 3 Classification based on configuration Conventional Air insulated outdoor substation or
SF6 Gas Insulated Substation (GIS)
Composite substations having combination of the above two Classification of substation

12. Step Up Substation – Associated with generating station as the generating voltage is low. Primary Grid Substation – Created at suitable load centre along primary transmission lines. Secondary Substation – Along secondary transmission line. Distribution Substation – Created where the transmission line voltage is step down to supply voltage.
Bulk supply and industrial substation – Similar to distribution sub-station but created separately for each consumer. Mining Substation – Needs special design consideration because of extra precaution for safety needed in the operation of electric supply.
Mobile Substation – Temporary requirement. 4. Classification based on application

13. 1 Outdoor Switchyard - incoming Lines - Outgoing Lines - Bus bar - Transformers - Bus post insulator & string insulators - Substation Equipment such as circuit-beakers, isolators, earthing switches, surge arresters, CTs, VTs, neutral grounding equipment. Substation parts and equipment

14. Administrative building
Conference room etc . 3 . Switchgear and Control Panel Building Low voltage a.c. Switchgear
Control Panels, Protection Panels 4 . Battery Room and D.C. Distribution System D.C . Battery system and charging equipment
D.C. distribution system 2. Main Office Building

15. - Fire fighting system - Diesel Generator (D.G.) Set - Oil purification system 5. Mechanical , Electrical and Other Auxiliaries

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