Bangladesh: Power Generation Increasing

Bangladesh Developing in Power Sector Day by Day:

Power shortage is very burning issue in Bangladesh. Small to large all types of consumers are suffering from unexpected power cut for year after year. 

Lots of power projects are  ongoing, we hope to improve the situation soon. The Daily Star said in their news authorities are expecting to add as much as 1,500 megawatt power to the national grid within next 3 months. 

If you interested go Full Story.

Owner wise Power Generation Report for 1st January 2019 is as below:

This figure is collected from Bangladesh Power Development Board (BPDB) that is not others than just imagine the production and demand amount.

Owner Name	Derated Capacity (MW)	Day Peak (MW)	Eve. Peak (MW)
Daily Generation of 01/01/2019
PDB	7784.00	3004.00	3859.00
SBU,PDB	123.00	0.00	0.00
EGCB	1059.00	700.00	846.00
APSCL	1227.00	530.00	462.00
IPP	3231.00	540.40	858.00
SIPP,PDB	245.00	171.00	210.00
RENTAL(3 yrs)	33.00	17.00	27.00
SIPP,REB	80.00	53.00	77.00
Q.Rental 3 Years	100.00	0.00	0.00
QRPP(5yrs)	100.00	0.00	0.00
QRPP(5yrs)	200.00	0.00	0.00
Other	2074.00	618.00	783.00
RPP (3 Yrs.)	490.00	25.00	241.00
QRPP (3 Yrs.)	263.00	37.00	105.00
RPP (15 Yrs.)	133.00	53.00	74.00
Total	17142	5748.4	7542

How Important the Electricity in Our Daily Life?

Electricity in Life

Importance of Electricity in Our Daily Life

Electricity is one of the most important blessings that creator has given to mankind by the result of modern science. Now days electricity is so important that science itself is paralyzed without electricity. So it has also become a part of our modern life and one cannot think a world for a single moment without electricity.

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Electricity has many uses in our day to day life, in single we can say nothing without electricity. It is used for lighting a room to fighting an enemy, working a fan to torquing the airplane engine, heating or cooling your home and domestic appliances like using electric stoves, refrigerator and many more. All these provide comfort to people everyday life. Repairing the car puncher or running the industries wheel, everywhere you need electricity. Without electricity the whole world paralyzed, useless this motionless world without electricity. In factories, large machines are worked with the help of electricity. Essential items like food, cloth, paper and many other things are the product of electricity.

Modern luxurious life means faster transportation and communication, actually electricity revolutionized this comfort modern life. Electro-magnetic trains and battery operated cars are means of quick and hassle free travel around.

Depending on electronic devices, we can say we are global citizen today, means we are now very closer than before ever. Electricity provides amusement life using tele-equipment like: radio, television and cinema, moreover internet which are the most popular forms of entertainment are the result of electricity.

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Modern human life make-easier machines like computers and robots have also been developed because of electricity. Not only modern luxurious and first life, also in the field of life supporting machines and medicine electricity plays a pivotal role. The use of electricity is increasing day by day.

Why Earthing Switch or Disconnector is Used in Transmission Line?

How Earthing or Disconnector Switch Play Rule to Personnel Safety Even in a Isolated Disconnected Line? 

The function of earth or disconnector switch is to discharge the capacitive voltage that stored in generator side or long transmission line conductors in the isolated system just after opening the CB (Circuit Breaker) and Isolator.

So, we understand that the main purpose of earth switch is to ground the isolated bus/conductor. Generally earth switch is mechanically interlinked with isolator. Means when isolator opens the circuit then earth-switch closes & vice-vars.

When earth switch is connected to the isolated but charged system it discharges the stored energy to earth, so that maintenance work can be carried out either in line on generator side.

So earth switch provides extra safety to the working personnel during transmission line maintenance.

You may interrelated to read:

01. What is the Function of Earthing or Grounding Transformer?

02. Equipment Grounding for De-energized Construction and Maintenance.

In my practical experiences I found three cases regarding the necessity of earthing in dead line too.

Case-1:

When the line crews working a dead line where parallel another line is alive. The line crews experienced the voltage exist and they felt some electrical shook.

Case-2:

When we construct parallel two circuits high voltage transmission line and energized a single circuit first. We found that other circuit also experiencing around 1kV in control panel metering system. This happened due to induced voltage.

Case-3:

When we construct a long overhead transmission and it was causing electric shook before touching with any energized line. Finally we discovered the voltage developed in it due to conductor capacitive behavior.

When Earthing Switch or Disconnector Should be Operated?

Operating the earth switch in an energized line may causes sever accident. The condition of earth switch operation is as below;

1. Earth switches should be operated only when the isolators are in open;
2. All earth switches can be operated manually. Semaphore indicator can be seen for position feedback (on/off) in switch yard control panel.

Latest Earth Switch or Dis-connector

What we discussed is for maintenance purpose earth switch mainly, but in latest GIS (Gas Insulated Switch) system switch-gear used automatic high speed earth switch. In this system when any fault occurred the faulty part automatically isolated and earthed by high speed auto earth switch and protect the equipment immediately.