Define series var compensation, Electrical Engineering

Assignment Help:

Define Series VAr Compensation?

For very long transmission lines, the inductive reactance of the line becomes so high that not much power can be transmitted through the line, see equation.

P = (Vs VR)/ X sin δ

Therefore, capacitors are connected in series with the line conductors and are used to reduce the inductive reactance and hence increase the power transmission capability of the line and reduce the voltage drop. Depending on the compensation level (k), the transmitted power given by equation (20) is modified to:

P = (VS VR) / X (1-K) sin δ

Where the compensation level  (k)  is  Xcapacitor/ Xline

A major drawback is that short-circuit currents cause excessive voltages across the capacitors and special protective devices such as spark gaps are required to protect them. In addition, series capacitors increase the system fault level.


Related Discussions:- Define series var compensation

What is the value of the lsb resistor, Q. For a 10-bit R-2R ladder-network ...

Q. For a 10-bit R-2R ladder-network D/A converter with an MSB resistor value of 10 k, what is the value of the LSB resistor?

Find the turns ratio, Q A60-Hz, 100-kVA, 2400/240-V(rms) transformer is use...

Q A60-Hz, 100-kVA, 2400/240-V(rms) transformer is used as a step-down transformer from a transmission line to a distribution system. Consider the transformer to be ideal. (a) Fi

Power system I, a single phase is supplied with sinusoid voltage v(t)=200co...

a single phase is supplied with sinusoid voltage v(t)=200cos(377t).the resulting instantaneous power is p(t)=800+1000cos(754t-36.7). find

Generation of wide-band fm, Generation ofwide-band FM can be done by vario...

Generation ofwide-band FM can be done by variousmeans.However, only themost common and conceptually the simplest one, known as the direct method, is considered here. It employs a

Dc machines, importance of critical speed in dc generator

importance of critical speed in dc generator

Singles phase half wave controlled rectifier with rl load, Singles Phase ...

Singles Phase  Half wave Controlled Rectifier  with RL Load When gate pulses are applied to the thyristor  at output voltage  v0 follows the input voltage  v s ( = V m sin ) s

What do you mean by direct coupling, Q What do you mean by Direct coupling?...

Q What do you mean by Direct coupling? In this method the a.c. output signal is fed directly to the next stage. No reactance is included in this coupling network. Special d.c.

Microprocessor, Memory map of tpa in a personal computer and explain such o...

Memory map of tpa in a personal computer and explain such of the areas in brief

Describe the physical properties and uses of the brasses, Describe the phys...

Describe the physical properties and uses of the Brasses. Brass - It is an alloy of copper and zinc along with 60 percent copper and 40 percent zinc. Its properties are- 1.

#title.Electrical Machine., ) Design a suitable double –layer lap winding f...

) Design a suitable double –layer lap winding for a 6-pole dc armature with 18 slots

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd