Industrial Visit to 220KV Faredi Substation

Government Engineering College,Modasa, Electrical Engineering Department has organized an industrial visit to Faredi Substation,Modasa Gujarat. 29 students along with 1 faculty member visited the industry on above mentioned date. GENERAL INFORMATION: Gujarat Energy Transmission Corporation Limited (GETCO) was set up in May 1999 and is registered under the Companies Act, 1956. The Company was promoted by erstwhile Gujarat Electricity Board (GEB) as its wholly owned subsidiary in the context of liberalization and as a part of efforts towards restructuring of the Power Sector. The company is now a subsidiary of Gujarat Urja Vikas Nigam, the successor company to the GEB. An electrical substation is a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers. Electric power may flow through several substations between generating plant and consumer, and may be changed in voltage in several steps. A substation that has a step-up transformer increases the voltage while decreasing the current, while a step-down transformer decreases the voltage while increasing the current for domestic and commercial distribution. OBJECTIVE OF VISIT: Our main purpose for this visit is to be familiar with industrial environment and to get practical knowledge of electrical power transmission and distribution. Being final year students we will get to know about basic industrial functioning of power transmission and distribution. Students will also get familiar with Transformer maintenance, circuit breaker, Transformer isolator, bus bar, Protective relays, Lightening arresters, Load break switches, SCADA system, Current and voltage Transformer and Battery room. EQUIPMENT IN A 220KV SUB-STATION The equipment required for a transformer Sub-Station depends upon the type of Sub-Station, Service requirement and the degree of protection desired. 220KV EHV Sub-Station has the following major equipments: • Bus-bar • Insulators • Isolating Switches • Circuit breaker • Protective relay • Instrument Transformer CONCLUSION Now from this report we can conclude that electricity plays an important role in our life. We are made aware of how the transmission the transmission of electricity is done. We too came to know about the various parts of the substation system. The three wings of electrical system viz. generation, transmission and distribution are connected to each other and that too very perfectly. Thus, for effective transmission and distribution a substation must: • Ensure steady state and transient stability • Effective voltage control • Prevention of loss of synchronism • Reliable supply by feeding the network at various points • Fault analysis improvement in respective field • Establishment of economic load distribution