Electrical and Electronics Engineering (EEE Internship presentation

STUDY ON ELECTRICITY DISTRIBUTION, SUBSTATION

OPERATION AND MAINTENANCE OF DESCO

Presented by:Md. Nasibul HaqueID#2012100500008

Md. Ashikur RahmanID#2012100500005Md. Rashidul IslamID#2012100500016

Supervised by:Murad Kabir Nipun

Senior Lecturer & Coordinator Department of Electrical &

Electronic Engineering (EEE) Southeast University

Introduction DESCO Overview Structure of Bangladesh Power sector Supply chain management Single line Diagram Generation to consumer General equipment of substation Operation & maintenance of Substation Line maintenance Metering system

Content of my Presentation

Electricity is a vital element of any country. Without proper electricity No country cannot achieve Economic prosperity. Only 62% of Bangladeshi population has access to electricity. To increase the GDP growth rate available and reasonably priced electricity is prerequisite.

The main reason for the current power crisis in our country are-◦ The lack of generation capacity◦ Poor operational and performance◦ The power sector has been with distribution system.

Introduction

Customer satisfaction provides their dependable power service.

Concern about future requirement of energy. Reduce system loss to a reasonable level. Run it commercially to a variable way. Installing new line, sub-station etc. in the

newly developed area and existing area to fulfill the ever rising demand of electricity.

Obligation of DESCO

Structure of Bangladesh Power sector

Supply chain management

Single line Diagram Generation to consumer

Power Transformer Switchgear/Circuit Breaker CT and PT Auxiliary Transformer Control Relay Panel Bus bar Isolator Lightening Arrester Remote Terminal Unit For DAS AC & DC Distribution Panels

General equipment of substation

Single line Diagram on DESCO Pallabi Substation

At the Substation maintenance period the first step is cut off greed connection from the maintenance Transformer and ground it. 2nd step consumer feeder change one Transformer line to another, Then breaker line cut off from the Bus Bar.

Operation & Maintenance of Transformer Test oil sample of transformer main tank & tap changer tank Operation of Tap changer Operation of cooling control system Operation & Maintenance of Breakers Check SF6 gas pressure Check for oil leaks Operation & Maintenance of Insulator Clean and lubricate auxiliary switch contacts Operation & Maintenance of Lightening Arrester Deformation of corona or stress rings Operation & Maintenance of Bus Bar Checking of insulation resistance

Operation & maintenance of Substation

2kw-8kw Single phase LT 8kw-49kw 3phase connection <50kw HT connectionAnd Solar power Supply must required to get new

connection for HT.DESCO take a project to prepaid Metering system which

like as mobile sim . After research a cash card installed to the meter then connection Automatic run. When balance is over it give a signal to research it .

Line Maintenance ,New connection and Metering system

Vision & Mission

Purbachol new town project : 500mw by the year 2020.

Uttara 3rd phase residential area-230mw by the year2020

In future DESCO can extend their area at Gazipur.

Future plan

Day by day increasing the demand of power because of industrial and life style is developing. So to cover up the demand establishing the new power plant i.e. Ruppur Nuclear Power plant. So new distribution company may be established or present distribution company may be extended their service. I wish to include myself this type generation or distribution sector .By managing its operation in efficient and effective manner providing better consumer service, desco has become the role model for all the electricity service providers of Bangladesh.

Conclusion

I praise the almighty for providing us the opportunity and granting

me the capability to complete Industrial training successfully.

I would like to express my deepest sense of Gratitude to my

supervisor Murad Kabir Nipun , M.Sc. Engineer, Senior Lecturer &

Coordinator Department of Electrical & Electronic Engineering

(EEE) Southeast University .

I would like to thanks DESCO Family who are given their valuable

time, sharing knowledge, guidance, suggestions me.

Acknowledgement