Static Reactive Power Compensation (SVC) Flexible AC Transmission Systemssvc Start

SVC & SVG Problem Solving

1.Electric Arc Furnace

Electric Arc Furnace is regarded as a nonlinear and erratic load, it will create a series of adverse effects to the
power grid, mainly including:

Serious three-phase unbalance of the power grid, negative sequence current.
High order harmonics, such as 24th even harmonics and 3rd, 5th, 7th odd harmonic, severe voltage distortion
becomes more complicated.
Serious voltage flicker. 
Low power factor

One of the methods to completely resolve above problems is to install a dynamic static reactive power
compensation device (SVC) with quick response speed, the response time of SVC system  is less than lOms.
The strict technical requirements is met, reactive current to electric arc furnace is provided, voltage level of bus
is stabilized, the output of the metallurgical active power is increased, and minimize the impact of flicker. The
isolated phase compensation function of SVC can eliminate the three-phase unbalance caused by electric arc
furnace, filtering devices, the harmful high order harmonics and improved power quality and power factor are
achieved through providing capacitive reactive power to the system.

2.Rolling Mill

The reactive power impulse caused by rolling mill and other industrial symmetry loads during working will
generate the following effects to the power grid:

Severe voltage level drop and voltage fluctuation make the electrical equipment inoperative, and reduce the
production efficiency.
Reduction of the power factor
Harmful high order harmonics in transmission device of load, mainly including odd harmonics, such as 5th, 7th,
11th, 13th and side frequency, which will lead to serious distortion of voltage level.

SVC can perfectly solve the aboved problems. A stable bus voltage is maintained, the harmonics is eliminated,
and the power factor is close to 1.

 3.Power supply of electric locomotive

the three-phase balance of the power grid is got through the quick isolated phase compensation function of
SVC, and the improved power factor is achieved through filters. SVC has solved the problems perfectly not only
technically but also economically with its excellent cost performance. 

4.Hoist and other heavy loads will have the following effects on power grids at work:

Voltage level drop and voltage fluctuation in the power grid. 
Low power factor
Harmful high order harmonics in transmission device

SVC can perfectly solve the problems.

 5.Long-distance power transmission

Global power currently trends to greater than power grid, long-distance transmission, high energy consumption.
At the same time, it also demands the transmission and distribution system to be more effective. SVC can
significantly improve the transmission and distribution performance of power system,  In order to maintain a
balanced voltage as the power system in different conditions, the installation of SVC at one or more suitable
locations of the power grid is necessary. The following purposes are achieved:

Stabilization of the voltage of weak system
Reduction of the transmission losses
Increment of transmission capacity makes the existing power grid play its maximum efficiency
Increment of transient stability limit 
Increment of damping under small interference
Enhancement of voltage control and stability
Elimination of power flunctuation

6.Secondary substation in city (66/110 kV)

SVC system can quickly and accurately make capacitive and inductive reactive power compensation. When
SVC stabilize bus voltage and improve the power factor, the inverted injection of reactive power is solved
thoroughly. In addition, the SVC may take full advantage of original existing fixed capacitors bank, achieving the
best effeciency with the least investment. It becomes the most effective way to improve the quality of power
supply of regional power grid.

1.Self-induction in a coil is called inductance
2.The obstacle in the coil is called inductive reactance
3.Reactance gets the current phase-shifted, lagging

Capacitive Loads

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FAQ For You

Quality Assurance

–From the very beginning, VILLE ensures quality in every step to achieve the best quality.

 Experience Sharing

–With more than 30 years’ experience in power industry, VILLE brings you an optimized solution.

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–Wherever you are, VILLE global network will support and provide you with value.

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–In response to your needs without delay, VILLE  knows the value of your time.

Ville Electric Company will keep up with the century, the epoch,

Sincerely look forward to your cooperation and win-win!

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