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50kVar 100kVar Module Power Factor Improvement STATCOM SVG PF Up to 1

50kVar 100kVar Module Power Factor Improvement STATCOM SVG PF Up to 1

1. STATCOM Introduction 

STATCOM, also called SVG(Static Var Generator), is a power factor controller, used to improve power factor through compensating reactive power dynamically and accurately, to replace traditional capacitor bank or work together with capacitors.

2. Phenomena caused by power quality problems

Power factor is too low

Because the motor etc. inductive load have inductive reactive power, resulting in low power factor, may be fined by government.

The neutral current is too large

Due to the third harmonic current and multiple of third harmonic current all conduct through the neutral line, so the neutral line current exceeds cable specification, resulting in cable overheat and safety potential danger.

Reactive power compensation capacitor failure

Because of harmonic is easy to have resonance with reactive power compensation capacitor, resulting in excessive current on capacitor, causing capacitance value decrease, liquid leakage etc. phenomenon, therefore, reactive power compensation capacitor could not work properly, seriously cause equipment damage because of too large resonant current.

The transformer's capacity waste

Reactive power and harmonic increase total power of the user, resulting in the capacity of the transformer is occupied

The trigger device protection

The peak of voltage and current harmonics is very high, which may exceed the protection value of equipment, which leads to the relay protection.

The screen light flashes, affect the normal work

Inverters and other uncontrolled rectification equipments will generate high harmonics, resulting in electric lights, computer screen flicker, affecting normal work.

The Precision instrument can't work normally

Some precision instruments are very sensitive to voltage and current fluctuations, and the requirement to power quality is very high, poor power quality will make these precision instruments can not work properly.

3. Customer benefit of improving power quality using STATCOM

Reactive power compensation

Reduce user's electricity bills

Ensure the power factor reaches national standard, to avoid government fine because of low power factor

Reduce line loss, reduce voltage drop

Increase the actual usage capacity of transformer and generator

3 phase imbalance compensation of the STATCOM

Avoid the neutral line overheat and aging, and even the risk of fire

Avoid partial voltage imbalance, causing the device false alarm

Avoid high zero ground voltage causing the burnt risk of control system weak electricity facilities

Voltage deviation control

Avoid too high or too low voltage to cause equipment damage

Active filter (APF) compensate 2-50th harmonic, STATCOM (SVG) compensate reactive power, three-phase current imbalance, as well as 13 times below harmonic. GERE power quality products are controllable current source, it can generate any user specified current waveform, to achieve ideal compensation effects, and also improve the voltage quality indirectly by improving the current. Therefore, GERE power quality products are comprehensive power management device to solve the problem of power quality.

4. Working principle  of the STATCOM
Through the external current transformer CT, the APF or STATCOM detect real-time grid current or load current, the controller extract the fundamental current, harmonic current through the fast Fourier transform, get active power, reactive power and negative sequence data by the DQ rotation coordinates, generate compensating current into power grid with same value opposite direction as compensating target (harmonic, reactive power, 3 phase imbalance) through IGBT power converter, realize power quality improvement.

5. Advantages of the STATCOM

Modular structure

Strong anti-pollution ability

Simple on-site installation

No limit combination

Very high power density

Very low loss

Little noise

Very high current loop bandwidth

6. Parameter comparison with other suppliers of the STATCOM

Looking for 50kvar 100kvar module power factor improvement statcom svg pf up to 1? Chengdu General Rectifier Research Institute is one of the professional manufacturers and suppliers. We have been dedicated to this field for over 20 years and already exported products to India, USA, Germany, etc. Equipped with a productive factory, we warmly welcome you to buy our high quality products made in China at competitive price or try our customized service.