Saturday-Sunday Training Report

Transcription

1 DEPARTMENT OF ELECTRICAL ENGINEERING Saturday-Sunday Training Report 9 th -10 th January,2015 At 220 KV Substation, Shapur H.O.D Prof. M. M. Baraiya T. P. O Prof. M. M. Makavana Visited Student Nagariya Raj ( ) BhutHardik ( ) ChauhanSandip ( ) Bhoraniya Ravi ( ) Kotadiya Piyush ( ) Jadeja Viral ( ) BabariyaAnkit ( ) Department TPO Prof. D. A. Divraniya 1 P a g e

2 CONTENT 1) Acknowledgement 3 2) Information 4 3) Purpose of visit 5 4) What we learn 6 5) Conclusion 9 2 P a g e

3 ACKNOWLEDGEMENT We are gladly & thankful to Director as well as Principal, Dr. V.N Jasani and Head of the Departments Prof. M. M. Baraiya and our faculties who give us a great guidance regarding training and instruct us the importance of training in electrical field. So we decided to take visit in 220KV Substation, Shapur We are especially thankful to respected authority of GETCO, Junagadh division because they granted us permission for taking visit and assistant engineers of Shapur Substation who gave the proper guidance to students and gave practical based approach learning to students. 3 P a g e

4 GENERAL INFORMATION Gujarat Energy Transmission Corporation Limited (GETCO) was set up in May 1999 and is registered under the Companies Act, 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 UrjaVikas 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. 4 P a g e

5 PURPOSE 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.one other purpose is how we can decide our 8-semester project on industrial based. Students of 6th semester Electrical Engineering will get the idea of electrical 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. 5 P a g e

6 WHAT WE LEARN? On 9 th jan.,2016 (Saturday) at 09:45 am we reached at Shapur Sub Station. When We Reached,we saw the mainly 3 substation are there 1) 220/132 KV 2) 220/66 KV 3) 220/66 KV At the begining one of the assistant engineer explained all the essential component of the 220KV substation and explained one line diagram of shapursubstation.in addition they explained about SCADA (Supervisory Control And Data Acquisition) and various programming done in control room. After explanation of control room,the assistant engineer gives one helmet for our head protection and we reach directly in yard. We saw in yard, many Electrical equipment are there.(like, lightening arrestor, Isolator, Circuit Breaker, Bundled Conductor, Transformer, Busbar, Current And Voltage Transformer, Wave trap) one assistant engineer gives totally details of all the equipment. 6 P a g e

7 1) Lightening arrestor (LA) The work of LA is break (Cut) the on load line.the LA is operated on SCADA based (automatically) and manually. 2) Circuit Breaker (CB) The circuit breaker is a proctiondevice.generally the CB is operate below condition. Break the circuit automatic or manual under normal condition. Break the circuit when circuit is fault condition. Make a circuit either remote control or manual under fault condition. In this substation SF6 circuit breaker are used.(other CB are also used like, Air blast CB, vacuum CB, oil CB) Some of the outstanding properties of SF6 making it desirable to using power applications are: 1. High dielectric strength 2. Unique arc-quenching ability 3. Excellent thermal stability 4. Good thermal conductivity 3) Conductor The conductor are used In transfer power from one place to other place.generally the material used in conductor are aluminum, copper etc 4) Transformer The work of transformer is voltage step or down without change in frequency.generallytransformers ratting in KVA or MVA.But this substation 100 MVA transformer are used. 7 P a g e

8 5) Current Transformer (CT) Current transformer is a device which use the measure on load current. The Current transformer are connected in series. 6) Potential transformer (PT) The potential transformer is a device which use the measure busbar voltage. The potential transformer are connected in parallel. 7) Wave Trap The function of wave trap is communication one substation to other substation with the help of frequency. 8) Battery room There are three panel of battery source one is for PLCC, it is 48v, two panels are 220v, and it is for relay operation and many more application. These batteries are charged when AC supply is ON. 8 P a g e

9 CONCLUSION From this visit, we got the information and practical knowledge about Power Distribution and Transmission. Student got the knowledge about different protection devices used in substation. They got the idea how to read the one line diagram of power substation using different symbols used in diagram. Student cleared out practical knowledge of transformer as how it step down voltage 220 KV to 132 KV.They also got knowledge about new SCADA based system as you can operate substation by manually or by command from computer using SCADA system and PLC programming. About 4 students were benefited from this visit as they got chance to discussion with assistant engineers working at Substation. 9 P a g e

10 THANK YOU Department of Electrical Engineering ***** 10 P a g e