Load Power Factor on Efficiency of Transmission Lines
Load power factor has an impact on the efficiency of the transmission lines. The reasons are as folllows-
Power Factor and Current
Power factor [Tex]cos\phi[/Tex] is the ratio of the actual power P to the total apparent power S flowing in the circuit. So maintaining a good load power factor is very important for increasing the efficiency of the transmission line.
So, Formula can be Written as
Power Factor [Tex]cos\phi=\frac{P}{S}[/Tex]
Impact of Load Power Factor on Transmission Line
- The current in the line increases as the power factor is less.
- The [Tex]I^2R[/Tex] losses are increased.
- The Efficiency is reduced.
By this we know that by understanding the relationship between the load power factor and the efficiency of transmission line we can optimize the power in the line and we can have more efficiency.
Calculation of Power and Current
%Voltage Regulation is given as when a load lagging power factor is connected then –
[Tex]\% Voltage Regulation=\frac{IRcos\phi_R}{V_R}\times100\%……(1)[/Tex]
Here R is receiving end quantities
%Voltage Regulation is given as when a load leading power factor is connected then –
[Tex]\%Voltage Regulation=\frac{IRcos\phi_R}{V_R}\times100\%…….(2)[/Tex]
Now we can tell the effect of load power factor on transmission efficiency is-
For single phase transmission line –
[Tex]P=V_RIcos\phi_R[/Tex]
Now,
[Tex]I=\frac{P}{V_Rcos\phi_R}……(3)[/Tex]
For three phase transmission line –
[Tex]P=3V_RIcos\phi_R[/Tex]
Now we know,
[Tex]I=\frac{P}{3V_Rcos\phi_R}[/Tex]…….(4)
Now from equation 3 and 4 we can see that for a power P to transmitted and receiving end voltage the load current is inversely proportional to the power factor of the load.
So as the load power factor decreases the load current and the power losses in the transmission line are increased.
Transmission Lines
In this article, we will be going through a Transmission line, first, we will start our article with the introduction of the Transmission line, then we will go through then we will go through different types of transmission lines with their methods, After that we will go through Voltage regulations and efficiency of the Transmission, At last, we will conclude our Article with some applications, properties, protection of transmission line with some FAQs.
Table of Content
- What is a Transmission line?
- Types of Transmission Lines
- Short Transmission Line
- Medium Transmission Line
- Long Transmission Line
- Efficiency
- Voltage Regulation
- Load Power Factor on Efficiency
- Parameters
- Applications
- Properties
- Protetction