SVG Low Voltage Static Var Generator

Category:

Low voltage compensation filter device

key word:

Filtering device

Hotline:

400-0571-505

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Detailed introduction

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Product Overview

The Low-Voltage Static VAR Generator (SVG) is a shunt-type dynamic reactive power compensation device. By modulating the switching states of IGBTs in the inverter bridge, it can control both the magnitude and phase of the AC voltage generated from DC. The entire system functions as a phase‑shifting power source; by detecting the reactive power required by the system, it can rapidly inject reactive power of equal magnitude but opposite phase, achieving local reactive power balance and maintaining the system’s operation at a high power factor in real time.
The KSVG‑SVG series static var generators can compensate fundamental reactive current and simultaneously provide dynamic, real-time compensation for harmonic currents. The main circuit comprises three key components: the control system, an IGBT power converter, and a filtering reactor. The SVG first employs a soft‑start contactor and a soft‑start resistor to initiate startup; subsequently, PWM modulation raises the capacitor voltage to its rated value. Meanwhile, the DSP controller detects all harmonic and reactive currents, enabling the SVG to either absorb or inject the required reactive current, thereby achieving continuous, stepless dynamic reactive power compensation.

Product model

Product Features

● Real-time dynamic power factor compensation
In distribution systems, loads such as induction motors, induction furnaces, and high-capacity rectifier equipment all exhibit inductive characteristics during operation, consuming substantial reactive power. This increases energy losses along the supply lines, degrades voltage quality, and reduces the effective utilization rate of generation, transmission, and distribution equipment due to the presence of reactive current. The KSVG‑SVG system can track changes in load reactive demand, providing dynamic reactive power compensation that minimizes line losses and significantly enhances the utilization efficiency of generation, transmission, and distribution assets.
● Effectively maintain the load-side voltage
For load centers, the large load capacity combined with the absence of substantial reactive power sources can easily lead to undervoltage conditions and even voltage collapse. The rapid reactive power regulation capability of KSVG–SVG systems effectively maintains the voltage on the load side, thereby enhancing the voltage stability of the power supply system.
●Enhance the stability of the distribution system,
Installing a KSVG‑SVG device at the midpoint of a long-distance distribution line not only compensates for the line’s reactive power under normal operating conditions but also provides rapid, timely reactive power regulation during system faults, dampens system oscillations, and enhances transmission system stability, thereby effectively increasing the line’s power transfer capability.
● Multi-functional in one device
Simultaneous Mitigation of Multiple Common Power Quality Issues This device can concurrently address several prevalent power quality problems in distribution networks, including three-phase imbalance, voltage flicker, and excessive power factor, thereby enhancing grid supply quality, ensuring the safe and reliable operation of user equipment, reducing energy consumption, and improving efficiency.
● Modular structure
Modular functional units include cabinet‑type modules (C) and wall‑mounted modules (W), catering to a wide range of installation and layout requirements. Cabinet‑type modules are typically installed within low‑voltage switchgear cabinets or frame structures, while wall‑mounted modules are primarily mounted on the walls of distribution rooms where space for switchgear cabinets is limited.

Main Technical Parameters

Rated voltage	0.4, 0.66, 0.69 kV (customizable for special voltages)
Rated frequency	50 Hz, 60 Hz
Single reactive power regulation range	±600 kvar
Insalation position	Indoor
Cooling mode	Air-cooled
Number of modules in parallel	8 units
Filtering function	2nd to 50th harmonics can be filtered.
Compensation function	Single-phase compensation and three-phase compensation
Response time	<5ms
Cabinet type structure	GGD, GCK, GCS, MNS
Altitude	2,000 meters; custom options available for distances over 2,000 meters.
Service life	More than 30 years
Executive standards	DL/T 1216-2013

Standard cabinet dimensions

Capacity (C)/Mvar	30	100	300	500	600
Width (W)/mm			800/1000
Height (H)/mm			2200
Depth (D)/mm			800/1000

Quick Selection Guide

System voltage	Specification and Model	Equipment Capacity
0.4kV	KSVG-SVG-C0.4/35T	35
	KSVG-SVG-C0.4/50T	50
	KSVG-SVG-C0.4/75T	75
	KSVG-SVG-C0.4/100T	1000
	KSVG-SVG-C0.4/150T	150
	KSVG-SVG-C0.4/300T	300
	KSVG-SVG-C0.4/600T	600
1kV	KSVG-SVG-C1/35T	35
	KSVG-SVG-C1/100T	100
	KSVG-SVG-C1/300T	300
	KSVG-SVG-C1/600T	600

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