Showing posts from March, 2015

Electricity from Urine

Electricity from Urine Yes, it is fact; not fake. Now possible to generate electricity from human urine.

We know many way to generate electricity from different sources around us. But latest news is that your toilet will be turn a electricity generator. Yes, a team of researcher from University of the West of England is saying urine can generate electricity. To read details Click Here

Also thegurdian  saying as:

A prototype toilet has been launched on a UK university campus to prove that urine can generate electricity, and show its potential for helping to light cubicles in international refugee camps. Students and staff at the Bristol-based University of the West of England are being asked to use the working urinal to feed microbial fuel cell (MFC) stacks that generate electricity to power indoor lighting. The project is the result of a partnership between researchers at the university and Oxfam, who hope the technology can be developed by aid agencies on a larger scale to bring light to r…

বিদ্যুতের সক্ষমতা বাড়লেও বঞ্চিত শিল্পখাত

বিদ্যুতের সক্ষমতা বাড়লেও বঞ্চিত শিল্পখাত
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How Works Power Grid Substation

What is Power Grid Substation?Grid substation is very important and essential installation for electrical power transmission network.
Grid substation is considered as KPI (Key Point Installation) of the state.
Don't mistake, no substation produces electricity.  The function of any kind of substation is to transfer same amount of  power only changing suitable voltage level.
To reduce losses and cost,  high voltage is required for transmission line system. On the other hand low voltage is essential for safe and secure uses at consumer end.
To ensure continuous power supply all over the country-  from generation station to consumer switchboard, different voltage level is required at different points; and this work is carried out by substation.
Grid substation works for high voltage network system which controls many sub - network.  The substation which uses at consumer end is called distribution substation.

The figure shows a portion of a typical grid substation.

Commissioning and Test Procedure of Power Cable and Equipment

Commissioning and Test Procedure:Testing methods for power cable insulation depend basically on type and material of cable insulation. Cross-linked Polyethylene (XLPE) is now spreading widely for power cable insulation at the rated voltage of 66 to 500 kV world-wide.
Quick and easy understanding for commissioning test for transmission line and major equipment. Here specially focused on underground power transmission line, underground cable megger testing, cable fault location and main causes of cable fault, some manufacturing fault. You also find some megger test procedure for transformer or circuit breaker or common methods for insulation test or megger test.   
To see the slide view click below link,
Commissioning and Test Procedure of Power Line

Typical Electrical Test for Power Cable01. Resistance measurements through bolted connections with a low-resistance ohmmeter;
02. Insulation-resistance test individually on each conductor with all other conductors and shields grounded. Apply vo…


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