High quality static var generator low voltage automatic reactive ...

Product Description

High quality static var generator low voltage automatic reactive power compensation switchgear

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Description

The  static var generator based on voltage type inverter principle,uses IGBT to control the value and phase of AC voltage of inverter, so as to serve the purpose of reactive and harmonic compensation. SVG can realize fast compensation for reactive load, and achieve very high compensation precision.

SVG is currently the best solution in reactive power control filed. SVG is faster (within 10ms), its compensation precision is high (power factor over 0.99), the compensation method is flexible (SVG can compensate both inductive reactive power and capacitive reactive power), and SVG also has the function of active filtration of harmonic current.

Application Site

Advantages

1. Compensate reactive power of system to improve the power factor.

2. Reduce line losses; improve the abolity of the transmission line.

3. With the dynamic compensation of harmonics, to improve power quality.

4. Inhibition of the fluctuation and flicker of voltage.

5. Maintain the receiving end voltage; strengthen the stability of system voltage.

6. Inhibition of the unbalance of three-phase.

7. Efficiency: up to 97.5%.

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8. Regular input voltage: 380V±20% Special input voltage such as 480V, 690V and etc can be customized.

9. Up to 8 modules in parallel operation max.

Technical Parameters

Rated voltage

400V,660v,750v,v

Stand-alone device capacity 50A-500A Instantaneous response speed

Full response speed Voltage flicker suppression ratio 5:1 Current distortion rate after compensation THDI Voltage distortion rate after compensation THDV Power factor >0.99, users can set Correct three-phase unbalance Unbalance degree Design service life >20 years Efficiency >99% Installation and heat dissipation method Indoor installation and air cooling Overload capacity 2*Irms peak current overload capability Protective function It is the same as overvoltage, undervoltage, phase loss, short circuit protection, device overcurrent, overheat protection, IGBT protection, etc. Electromagnetic Compatibility Meet the requirements of EU standard EN-5: Grid frequency 50/60 Hz Noise level

Ambient temperature -10℃~40℃ Protection level

IP31 (please contact manufacturer for higher protection level)

Humidity

Related products

FGSVG G61 Type — Smarter Reactive Power Compensation, Better Power Quality Working Principle

The SVG (Static Var Generator) operates by connecting a voltage-source converter (VSC), composed of a self-commutated bridge circuit using IGBT devices, in parallel with the power grid through a transformer or reactor. By controlling the switching of the IGBT modules, the DC voltage is converted into an AC output with adjustable amplitude and phase.

For an ideal SVG with negligible active power loss, reactive power compensation is achieved solely by adjusting the output voltage amplitude:

• When the output voltage is lower than the grid voltage, the SVG operates in an inductive mode, absorbing reactive power (acting like a reactor).
• When the output voltage is higher than the grid voltage, it operates in a capacitive mode, supplying reactive power (acting like a capacitor).

Connection Types

SVG systems are categorized into:

• Direct-connection type: typically used for 6kV, 10kV, and 35kV applications.
• Step-down connection type: generally applied on a 10kV low-voltage side.

The choice of connection depends on the grid voltage level at the point of interconnection and the required compensation capacity. The system uses a cascaded H-bridge topology, and the connection structure can be configured as either star (Y) or delta (Δ), depending on application requirements.

If you want to learn more, please visit our website Static Var Generator Supplier.

Product Advantages

• Intelligent Human-Machine Interaction, Simplified Commissioning - Features intelligent startup self-check function, reducing commissioning complexity and shortening deployment cycle.
• Advanced Recording and Diagnostic Functions - Equipped with real-time waveform recording and fault trace analysis for precise monitoring.
• Self-Adaptive Phase Sequence Recognition - Automatically identifies and adapts to phase sequence, streamlining installation.
• Multi-Level Networking, Seamless Capacity Expansion - Supports high-speed optical fiber communication for easy reactive power capacity expansion.
• Intelligent Operating Mode Switching - Automatically switches between normal and fault operating modes.
• Remote Monitoring via APP & Flexible Communication Interfaces - Offers rich communication interfaces including RS485, CAN, Ethernet, and GPRS.

Key Features

• Quick Response - Controller response time ≤1ms and full power response time ≤5ms
• Negative Sequence Suppression - Compensates for negative sequence current caused by load imbalances
• Multiple Operating Modes - Supports constant reactive power, constant power factor, constant voltage modes
• Harmonic Mitigation - Effectively compensates for harmonics up to the 13th order
• Long-Distance Power Transmission Support - Improves voltage, reduces losses, and provides quick reactive power regulation
• Comprehensive Protection - Three levels of protection safeguard the device from faults
• Modular Design - Facilitates easy installation and maintenance
• IP44 Protection - Available for harsh environments with high dust or humidity

Installation and Maintenance Guidelines

• Indoor Cleanliness - Ensure installation environment is clean and dry
• Pest Control - Implement anti-rodent measures
• Temperature Management - Maintain ambient temperature below 38°C
• Post-Startup Fastening Check - Tighten all connections about one week after commissioning
• Daily Inspection - Check for unusual noises, weak airflow, or abnormal smells
• Annual Preventive Maintenance - Schedule shutdown at least once per year for internal inspection

Application Cases Applications