GY-SVG-PLUS High-spec Static Var Generator
GY-SVG-PLUS is a high-performance Static Var Generator designed for advanced reactive power compensation and power quality improvement. It adopts DSP+CPLD full-digital three-level control technology to achieve real-time reactive power compensation, three-phase unbalance correction and zero-sequence current compensation. With fast dynamic response, high compensation accuracy and flexible installation options, it provides reliable power quality solutions for industrial and commercial electrical systems.
•Fast Dynamic Compensation — Transient response <50μs · full response <10ms for rapid reactive power adjustment and stable power quality control.
•High-Precision Reactive Compensation — Compensation accuracy ≥99% · power factor improved to ≥0.99 with bidirectional reactive power regulation.
•Three-Phase Unbalance Correction — Real-time unbalance compensation with residual unbalance ≤5% for improved system stability.
•Neutral Current Compensation — Zero-sequence current compensation up to 3× phase line current for enhanced three-phase four-wire system performance.
•Flexible CT Sampling & Expansion — Dual external CT channels support LV-side, HV-side and load-side sampling · modular design enables parallel capacity expansion.
•Industrial EMC Reliability — Class A EMC (RE & CE) compliance · optimized cooling structure and isolated PCB design for reliable operation.
Product Features
Overview
Working principle of the high-configuration model Static Var Generator (GY-SVG-PLUS):
The device connects a voltage source converter (VSC) to the power grid via a filter in parallel. By adjusting the amplitude and phase of the output voltage on the AC side of the converter, it dynamically and accurately compensates for reactive power in the grid system. The transient response time is less than 50 μs, and the full response time is less than 10 ms, thereby avoiding over-compensation and under-compensation. In addition, the device’s neutral line zero-sequence current filtering capability can reach three times the phase line current. It also offers improved EMC electromagnetic compatibility performance and better stability.
Performance characteristics
1.DSP+CPLD full digital control core, three-level topology technology, advanced reactive power detection algorithm, and PWM control strategy.
2.Modular design, supports paralleling of multiple modules, small footprint, easy maintenance.
3.Independent air duct and independent board compartment structure design to ensure stable operation of the device.
4.Equipped with two external current sampling channels, supporting various compensation modes such as low-voltage side sampling with low-voltage side compensation, high-voltage side sampling with low-voltage side compensation, and reactive component compensation.
5.Supports selectable compensation modes: reactive power compensation, or reactive power compensation + three-phase unbalance compensation.
6.Reactive power compensation capability: compensation rate ≥ 99%.
7.Unbalance compensation capability: unbalance degree after compensation ≤ 5%.
8.Neutral line zero-sequence current filtering capability is three times that of the phase line current.
9.Dynamic response speed to load is millisecond level, enabling dynamic and accurate compensation for impact reactive power loads.
10.EMC electromagnetic compatibility: RE and CE items meet Class A test standard.
Technical Parameter
| Model | 220V | 380V |
| 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%) | 380V (-20%~+20%) |
| Operating frequency | 50Hz/60Hz (45Hz~63Hz) | |
| Rated compensation capacity | 37kvar、50kvar | 75kvar、100kvar |
| Grid configuration | Three‑phase three‑wire, three‑phase four‑wire | |
| Number of parallel units | unlimited | |
| Overall efficiency | ≥97% | |
| Switching frequency | 16kHz | |
| Function selection | Reactive power compensation / Reactive power compensation + three‑phase unbalance compensation | |
| Reactive compensation rate | Reactive power compensation ≥99% | |
| Unbalance compensation capability | Unbalance degree after compensation ≤5% | |
| Full response time | <10ms | |
| Noise level | ≤65dB | |
| Communication method | 2 RS485 communication ports (Wi‑Fi supported) | |
| Protection functions | Overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power supply failure, overtemperature, frequency anomaly, short‑circuit protection, resonance protection, etc. | |
| Overload capability | Rated 1.2 times overload for 60 seconds | |
| Installation method | Rack / Wall‑mounted | |
| Cable entry | Rear cable entry (rack‑mount), top cable entry (wall‑mounted) | |
| Protection rating | IP20 (IP54 customizable) | |
| Neutral line filtering capability | Neutral line filtering capacity is 3 times that of phase filtering capacity | |
| Cooling method | Forced air cooling | |
| Electromagnetic compatibility | EMC (Electromagnetic Compatibility)‑ Radiated Emission (RE) and Conducted Emission (CE) meet Class A test standard | |
User Manual
Frequently Asked Questions About GY-SVG-PLUS High-Spec Static Var Generator
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