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The series capacitors can be the cause of overcompensating on the power line and thus cause the following problems:-
a) Over voltages on the line when connected loads are smaller than the rated loads and this can damage the Transformers and capacitors
b) Ferro-resonace phenomenon can cause very high volatges again can be damaging
c) The fault level of the poweer system will increase and if not considered in the design, the fault current could exceed thedesign limits.
What else can I help you with?
3 ways to reduce power supply ripple?
Increase filter capacitors. Series inductors Semiconductor regulator 3 phase lines instead of single phase
Why there are no losses in DC transmission?
There are losses in d.c. transmission lines, due to their resistance. But there are no reactive losses. So, d.c. transmission lines have less losses in comparison to an equivalent a.c. transmission line.
Why transmission lines are transposed?
To avoid inteference between communication lines
Why is energy lost in power transmission lines?
Increase the voltage in the lines.
What is the purpose of ground wires in overhead transmission lines?
connection of the ground of all the transmission lines and used as a communication cable between protection devices
Why capacitor used in transmission line?
Capacitors can be used to decrease the inductance of power lines (series compensation), and for voltage support (capacitors are put in parallel with the system).
Why you use capacitors in lines?
Capacitors are connected in series with some lines (series compensated lines) and in parallel. Capacitors in parallel are used to prop up the voltage at that location by injecting reactive power onto the grid. Capacitors in series are used to cancel out some of the inductance of the line, which allows for more power to be transported through the line. Capacitors at load centers are often used for power factor correction, and are connected in parallel (line to ground). To achieve efficiency in a power delivery system it is most efficient to have the current and voltage in phase. Often the load is inductive hence the current lags the voltage (due to motors etc.). Capacitors are switched in and out of the transmission system to counteract this effect.
Why seres capacitors are used in transmission lines?
A poor power factor (due to large reactive loads) in a transmission system will reduce the voltage on local bus bars. Typically, especially for industrial facilities, there will be a large inductive component to the system loads, by installing shunt capacitors in close proximity to these loads the inductive component is effectively cancelled out, allowing the transmission lines to carry greater real power.[Once the capacitors are charged the reactive power demand of the inductive load is fulfilled by the charge/discharge cycle of the capacitors rather than by long-distance transmission of reactive power].
How does surge impedance effect on transmittion line?
The SIL=(KV LL / Zo), where the V(LL) is the receiving end voltage in kV and Zo is the surge impedance in ohms. when the line is loaded over its SIL, it behaves like a shunt reactor - absorbing Mvar from the system, and when is loaded less its SIL it behaves like a shunt capacitor, supply Mvar back to the system. So to increase the Surge Impedance Loading (SIL), we need to decrease the the surge impedance of the line, and that can be done by introducing series capacitors (capacitors in series with the transmission line) or shunt capacitors (capacitors in parallel with transmission lines), which means providing Mvar to the system and reducing the Mw. hopefully that helps
Since when has fixed capacitor have been seen in use on transmission line?
Capacitors have always been added on both power lines and telephone lines to compensate for the build up of inductive reactance in long runs of wire.
3 ways to reduce power supply ripple?
Increase filter capacitors. Series inductors Semiconductor regulator 3 phase lines instead of single phase
What is mean by compensated and uncompensated power transmission line?
Power transmissions lines are inductive by nature. Power in AC systems is transmitted by varying the phase angle between source and receiving end following the below equation: Vsource * Vrecieve * sin (phi) / (Zsource + Zrecieve + Zline) V = the voltage phi = angle between source and receiving end voltage Z = impedance, Zsource = the impedance behind the source end Series compensating lines is accomplished by adding capacitors in series on a line, which reduces the Zline term in the above equation. This allows more power to be transmitted from one end to the other.
What has the author Folke Bolinder written?
Folke Bolinder has written: 'Fourier transforms in the theory of inhomogeneous transmission lines' -- subject(s): Electric lines, Fourier series
What are the methods to improve the surge impedance loading of transmission lines?
By increasing Vr,Reducing in series inductance,increase capacitance
Disconnecting transmission lines 96 jeep?
You can disconnect the 1996 Jeep transmission lines with a 9/16 open end wrench. Be prepared for transmission fluid to come out of the transmission lines.
How can you replace the lines that carry transmission fluid to the transmission?
if you are asking about the cooling lines for the transmission that connect to the radiator, its easy. first disconnect the lines from the radiator (2 lines, usually on the bottom opposite the radiator outlet) then disconnect the lines from the transmission. remove the brackets holding them on, then remove.
What is the major material used in constructing transmission lines?
The major material used in the construction of transmission lines is aluminum alloy. Steel is also used to reinforce the lines. No insulation is used for overhead transmission lines.
