SVG Static Var Generator
1.Basic Principle
The static var generator is connected in parallel with the power grid. It uses an external current transformer (CT) to detect the load current in real time and uses a DSP to calculate and extract the reactive component of the load. It then uses PWM converter technology to control the IGBT, which inverts the internal converter to generate a reactive current that meets the load requirements, thereby achieving the purpose of reactive power compensation.
2.HMI Display
ADL-HMI-4.3(4.3" Display Screen)
ADL-HMI-7(7" Display Screen)
3.Technical Data
| Item | Specification |
| Input Voltage | 400V（-20%~+20%） |
| Mains Frequency | 50Hz/60Hz |
| Wiring Type | 3P3W,3P4W |
| Circuit Topology | Three Level |
| Mounting Type | Drawer type, Wall-mounted type, Cabinet type |
| Number of Units in Parallel | No limit |
| Main Functions | Reactive Power Compensation |
| Rated Capacity | Module capacity: 150Kvar/100Kvar / 75Kvar / 50Kvar / 30Kvar Cabinet capacity: Expandable |
| Switching/control frequency | 20KHz |
| Overall Response Time | ≤5ms |
| Instantaneous Response Time | ≤50us |
| Target Power Factor | Adjustable from -1 to +1 continuously |
| Rreactive Power Compensation Rate | ≥99% |
| Active Loss Of System | ≤2.5% |
| Protection Class | IP20,other classes can be customized |
| Noise | ≤55dB |
| Human Machine Interface | Color LCD Touch Screen |
| Communication Interface | RS485,Network port,CAN |
| Communication Protocol | Modbus |
| Ambient Temperature | -20~45℃ |
| Relative Humidity | 5%~95%, no condensation |
| Automatic Startup | Suport |
| Mounting Height Above Sea Level | ≤1500m,appropriately reduce the capacity if it is > 1500m |
Protection function:
Input overvoltage protection, input undervoltage protection, input phase loss protection, input frequency protection, output overcurrent protection, IGBT overtemperature protection, DC bus overvoltage protection, DC bus undervoltage protection, fan stall protection.
4.Overall Dimensions
150Kvar Module Size
150Kvar Drawer Type Mounting Size
150Kvar Wall-mounted Type Mounting Size
100Kvar/75Kvar Module Size
100Kvar/75Kvar Drawer Type Mounting Size
100Kvar/75Kvar Wall-mounted Type Mounting Size
50Kvar Module Size
50Kvar Drawer Type Mounting Size
50Kvar Wall-mounted Type Mounting Size
30Kvar Module Size
30Kvar Drawer Type Mounting Size
30Kvar Wall-mounted Type Mounting Size
5.Model Description
ADL-SVG module series cover from 30Kvar to 150Kvar, support drawer type, wall mounted type and cabinet type
| SN | Item | Rated Capacity | Model | Dimensions (W*D*H,CM) |
N.W (KGS) |
Packing Size (W*D*H,CM) |
G.W. (KGS) |
| 1 | SVG | 30Kvar | ADL-SVG-30-C/0.4 | 43*46.1*16.3 | 20 | 58*59*23 | 22 |
| 2 | SVG | 50Kvar | ADL-SVG-50-C/0.4 | 43*51*16.3 | 25 | 58*59*23 | 27 |
| 3 | SVG | 75Kvar | ADL-SVG-75-C/0.4 | 50*65*21.3 | 35 | 63*71.5*28 | 37 |
| 4 | SVG | 100Kvar | ADL-SVG-100-C/0.4 | 50*65*21.3 | 40 | 63*71.5*28 | 42 |
| 5 | SVG | 150Kvar | ADL-SVG-150-C/0.4 | 55*70.3*21.3 | 50 | 63*71.5*28 | 52 |
Model Explanation:
6.Advantages And Differences Between SVG And Traditional Reactive Power Compensation Equipment
| Device Name | Static Var Generator (SVG) | Traditional Reactive Power Compensation Devices |
| Working Principle | Uses power electronics (IGBTs) to generate or absorb reactive power through an inverter, acting as a "reactive power source. | Switches capacitor banks/reactors to provide fixed or stepwise adjustable reactive power, acting as a "reactive load." |
| Response Speed | Very fast, typically within a few milliseconds, can track and compensate for load changes in real-time. | Relatively slow, typically tens to hundreds of milliseconds, cannot achieve instantaneous precise compensation. |
| Compensation Accuracy | High, enables stepless and smooth compensation, precisely controlling reactive power output to avoid over/under-compensation. | Low, provides stepwise compensation with dead zones, prone to over/under-compensation. |
| Harmonic Characteristics | Does not generate harmonics; can even actively filter specific harmonics (APF functionality). | Capacitor bank switching can amplify background system harmonics, potentially causing harmonic resonance. |
| Operating Range | Wide operating range, can continuously generate or absorb reactive power within the rated capacity. | Narrower operating range, limited by the number and capacity of capacitor/reactor banks |
| Install Space | Small, high power density, compact structure. | Large, especially for high capacities, requires extensive space for capacitors and reactors. |
| Control Way | Active control, based on instantaneous reactive power theory, provides stronger suppression of system voltage fluctuations. | Passive control, responds to changes in system voltage or reactive power demand by switching. |
| Relationship With System Voltage | Output current is largely unaffected by system voltage; can provide full reactive support even during low voltage conditions. | Output reactive power is proportional to the square of the system voltage (Q ∝ V²); compensation capability drops sharply during low voltage. |
| Advantages | Fast response, high precision, no harmonics, multi-functional (reactive power, harmonic, unbalance compensation), excellent stability. | Simple structure, mature technology, lower initial investment cost, relatively easy maintancene. |
| Disadvantages | Higher initial investment cost, complex control, high reliability requirements for power electronic devices. | Slow response, low precision, potential harmonic issues, large footprint, poor performance during low voltage. |
Summary
SVG represents the future of reactive power compensation technology, especially suitable for applications with high power quality requirements and rapidly fluctuating loads (e.g., arc furnaces, rolling mills, wind/solar farms). Traditional devices, due to their cost advantage, are still widely used in scenarios with stable loads and less demanding compensation speed.
7.More Application
In modern power systems, renewable energy generation and fluctuating loads have been widely integrated to optimize the energy mix. However, they are also major causes of grid voltage fluctuations and poor power factor. The ADL-SVG Static Var Generator (SVG) can provide precise, real-time reactive power compensation to stabilize grid voltage and improve power quality. The ADL-SVG brings critical power quality benefits to a variety of sectors with high demands for voltage stability, including the following:
- Photovoltaic & Wind Farms
- Arc Furnaces & Rolling Mills
- Electric Traction & Electrified Railways
- Data Centers & Critical Facilities
- Port Shore Power & Large Hoisting Equipment
- Mining & Excavation Equipment
- Flexible AC Transmission Systems (FACTS)
8.Customized Solution
Tailored Solutions, Precise Compensation – Your Expert in Customized Reactive Power Compensation
Service Description:
We understand that every client operates in a unique electrical environment with distinct load characteristics and process requirements. That's why we never believe in a "one-size-fits-all" approach. Our team of professional engineers is dedicated to providing fully customized reactive power compensation solutions, ensuring optimal performance and unparalleled protection for your electrical system.
Our Customization Services Include:
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Precise Capacity Configuration: We analyze your load types (e.g., motors, VFDs, welding machines), current power factor, and future expansion plans to calculate and configure the most accurate compensation capacity, preventing over-compensation or under-compensation.
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Environment-Specific Design: For challenging application environments, we offer enhanced designs including dust-proof, moisture-resistant, anti-corrosion, high-temperature endurance, and high-altitude adaptation to ensure stable operation under harsh conditions.
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Specific Load Solutions: For loads that generate significant harmonics (such as VFDs, medium frequency furnaces, arc furnaces), we provide harmonic-resistant compensation schemes with built-in reactors to effectively suppress harmonic amplification and protect capacitors from damage.
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Flexible Control & Protection: We can configure different switching mechanisms (contactor/thyristor) and controllers (basic/smart) based on your automation needs. Comprehensive protection features like over-current, over-voltage, under-voltage, and over-temperature protection are also available.
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Structure & Installation Customization: We offer flexible adjustments to cabinet dimensions, color, and cable entry/exit methods to facilitate easy installation and seamless integration into your existing site.
Our Commitment:
From on-site assessment and solution design to manufacturing, your needs are at the core of everything we do. By choosing us, you gain more than just a high-quality capacitor bank; you secure a customized power assurance plan that enhances energy efficiency, ensures safety, and reduces operational costs.
9.Why Choose ANDELI
- Advanced Technology, Precision Performance
- Superior Quality, Unmatched Reliability
- Expert Team, Dedicated Service
- High Value, Maximum ROI