Why is electricity transmitted at high voltages?
You might have noticed huge towers supporting the high voltage transmission lines in your locality. These high voltage lines transmit electric power generated at power stations which are situated at…
Difference between Short circuit and overload
Short Circuit A short circuit occurs when two or more current carrying conductors of different phases or different voltage levels or different terminal (in DC circuits) come in contact with…
Power Factor – Importance, Calculation and Correction techniques
In AC power system, power factor is a very important parameter that defines how efficiently electric power is being utilized by the load. It is a rational number between -1 and 1 but has no unit. The power factor of a system depends on the type of load present, whether resistive, inductive or capacitive. The inductive and capacitive load has a negative impact on the power factor of the system. Poor power factor results in an increase in current drained by the load.
What is ammeter selector switch?
Ammeter selector switch is basically a normal three position switch. In large Electrical distribution panels, an ammeter is used to monitor the current through each line. (more…)
Which is the most common fault occuring in the power system?
The most common fault occurring in the power system is a Single line to ground fault. Almost 70 per cent of faults occurring is Single line to ground faults.
What are the different faults occurring in the overhead transmission lines?
What are the different faults occurring in the overhead transmission lines?
1. Single line to ground fault.
2. Line to line fault.
3. Double line to ground fault.
4. Line to line to line fault (Three phases are short-circuited)
5. Three line to ground fault. (more…)
On which part of the power system, the occurrence of failure / abnormal condition is more?
On which part of the power system the occurrence of failure / abnormal condition is more? The probability of occurrence of failure / abnormal condition is more in the on…
What is short circuit?
What is short circuit?
A short circuit is a situation in which two or more different lines (having different voltage levels/ different phase/ different terminals) come in contact and finally leads to the flow of large short circuit currents that may damage the equipment or the system.
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Comparision of conventional energy resources
Conventional energy is obtained from the conventional energy resources such as coal, diesel, gas and nucleus. These are non-renewable resources and may exhaust in few decades if consumed at the current rate. The burning of fossil fuels produces harmful gases such as nitrous oxide, carbon monoxide, sulphur-di-oxide etc and pollutes the environment. The comparison of various factors of power production from the conventional resources is listed below. (more…)
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