GY-SVG Static Var Generator – Cabinet
GY-SVG Static Var Generator Cabinet is an integrated dynamic reactive power compensation solution featuring DSP+CPLD digital control technology and modular parallel operation. It provides fast reactive power compensation, power factor correction, voltage stabilization, and three-phase unbalance correction for industrial power systems. With high efficiency and reliable protection, it is suitable for heavy-load industries, renewable energy applications, and advanced power quality management scenarios.
•Wide Grid Compatibility — Designed for various power systems, supporting AC220V, 380V, 500V, 690V, and 800V voltage levels for flexible application.
•Scalable Reactive Power Compensation — Available with compensation capacities from 50kvar to 900kvar, meeting different industrial reactive power correction requirements.
•Ultra-Fast Dynamic Response — Provides transient response within 50μs and complete compensation response in less than 10ms for rapidly changing loads.
•High-Efficiency Operation — Achieves ≥97% overall efficiency with forced air cooling design, ensuring stable and energy-saving performance.
•Integrated Power Quality Improvement — Combines dynamic reactive power compensation and three-phase unbalance correction, reducing residual unbalance to ≤5%.
Product Features
Overview
The Static Var Generator (GYSVG) is mainly composed of an AC distribution section, GYSVG power modules, a monitoring system, and other auxiliary components. The device connects a voltage source converter (VSC) to the grid in parallel via a filter. By regulating the amplitude and phase of the output voltage on the AC side of the converter, it provides dynamic and precise compensation for reactive power in the power grid system. The transient response time is less than 50 μs, and the full response time is less than 10 ms, effectively preventing both over-compensation and under-compensation. Adopting a modular design, the system features high integration density and offers convenient, flexible installation.
Performance characteristics
(1) DSP + CPLD all-digital control core, three-level topology technology, advanced reactive power detection algorithm, and PWM control strategy.
(2) Modular design, supporting parallel connection of multiple modules, with a small footprint and easy maintenance.
(3) Independent air duct and separate board compartment structure design to ensure stable and reliable operation of the equipment.
(4) Equipped with two external current sampling channels, supporting multiple compensation modes, including low-voltage side sampling with low-voltage side compensation, high-voltage side sampling with low-voltage side compensation, and reactive power component compensation.
(5) Supports selectable operating modes: reactive power compensation only, or reactive power compensation combined with three-phase unbalance compensation.
(6) Reactive power compensation capability: compensation rate ≥ 99%.
(7) Unbalance compensation capability: after compensation, the unbalance degree ≤ 5%.
(8) Dynamic response speed to loads is at millisecond level, enabling dynamic and precise reactive power compensation for impact loads.
Technical Parameter
| Model | 220V | 380V | 500V | 690V | 800V | |
| Altitude | <2000m; above 2000 m, derate according to GB/T 3859.2 | |||||
| Ambient temperature | -10 ~ +50℃ (above 40 ℃, capacity derating ≤30%) | |||||
| Relative humidity | ≤90% relative humidity, no condensation on the surface at a monthly minimum temperature of 25 ℃ | |||||
| Pollution degree | Pollution degree ≤ Class III | |||||
| Operating voltage | AC220V (-20%~+20%) | AC380V (-20%~+20%) | AC500V (-20%~+20%) | AC690V (-20%~+15%) | AC800V (-20%~850V Max) | |
| Operating frequency | 50Hz/60Hz (45Hz~63Hz) | |||||
| Rated compensation capacity | 50kvar ~ 300kvar | 100kvar ~ 600kvar | 90kvar ~ 540kvar | 100kvar ~ 720kvar | 150kvar ~ 900kvar | |
| Grid configuration | Three‑phase three‑wire, three‑phase four‑wire | Three‑phase three‑wire | ||||
| Number of parallel units | No restrictions | |||||
| Overall efficiency | ≥97% | |||||
| Switching frequency | 16kHz | 12.8kHz | ||||
| Function selection ① | Reactive power compensation / Reactive power compensation+Three‑phase unbalance compensation | Reactive power compensation | ||||
| Reactive compensation rate | Reactive power compensation ≥95% | |||||
| Unbalance compensation capability | Unbalance degree after compensation ≤5% | |||||
| Cooling mode | Forced air cooling | |||||
| Full response time | Reactive power: <10ms, Harmonics: <40ms | |||||
| Noise level | ≤75dB | |||||
| Communication method | 2 RS485 communication interfaces (Wi‑Fi supported) | |||||
| Protection functions | Overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power supply failure, overtemperature, frequency anomaly, short‑circuit protection, etc. | |||||
| Overload capability | Rated 1.2 times overload for 60 seconds | |||||
| Installation method | vertical installation | |||||
| Cable entry | Entering the upper line and entering the lower line | |||||
| Protection rating | IP20 (IP54 available on request / customizable) | |||||
| Size | 1250*1000*2200 (maximum capacity size, adjustable according to different capacities) | |||||
| Weight | Related to capacity, maximum 450KG | Related to capacity, maximum 620KG | ||||
User Manual
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