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40~50 kvar SVG module
- Product Description
- Features & Advantages
- Technical Parameters
- Related manuals
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40~50 kvar SVG module
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- Commodity name: 40~50 kvar SVG module
- Commodity ID: 1362032810893398016
- 类型: Industrial automation
- 品牌: Capni
Brand: Zhiyuan New Energy Description: Equipped with comprehensive protection features, including overcurrent, overvoltage, undervoltage, and overtemperature protection, ensuring the system operates safely and reliably.
1. Introduction
The Static Var Generator (SVG for short) is a new type of power reactive compensation device developed using modern power electronics technology and digital signal processing technology based on high-speed DSP devices.
It consists of two main components: a reference current computation circuit and a compensation current generation circuit. By using external current transformers, the reactive power content in the power grid is detected in real time, generating a reference current. The reference current computation circuit continuously monitors the current flowing in the power lines, converts the analog current signals into digital signals, and then sends these digital signals to a high-speed digital signal processor (DSP) for further processing. The DSP separates harmonics from the fundamental wave and outputs drive pulses in the form of pulse-width modulation (PWM) signals to the compensation current generation circuit. These pulses drive IGBT or IPM power modules, which in turn control the inverter to generate the required reactive current, thereby achieving the purpose of reactive power compensation.
2. Basic Components
The SVG system mainly comprises the main contactor KM1, the pre-charge contactor KM2, the pre-charge resistor R, the filtering inductor L, the voltage-source PWM rectifier bridge (VSR), and the DC bus capacitor C.
The system diagram is shown in Figure 1. Resistor R serves as the pre-charge resistor for the system. Once KM2 closes, the voltage across the system bus capacitor begins to charge slowly. KM1 controls the main circuit and simultaneously shorts out the pre-charge resistor R. The inductor acts as a power-transfer interface between the power converter and the power system; on one hand, it stores energy, and on the other hand, it filters out high-frequency switching ripple currents. The voltage-source PWM rectifier bridge is the power conversion component of the SVG, composed of insulated-gate bipolar transistors (IGBTs). It employs space-vector pulse-width modulation (SVPWM) technology to drive the IGBTs and generate the compensation current waveform. The DC capacitor module stores the DC energy generated by the IGBT power conversion module.
Key words:- 无功补偿
- 静止无功发生器
- SVG
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More features, more modes
Ø Harmonic compensation, reactive power compensation, and harmonic-reactive power joint compensation—all in one device; multi-purpose functionality.
Ø Equipped with harmonic subharmonic compensation function, allowing setting of reactive power compensation ratio;
Ø High-definition color touch screen that displays system and device operating parameters in real time;
Comprehensive protection features to enhance user application stability.
Ø An effective-value peak dual-setting automatic current-limiting algorithm that, when the harmonic current of the load exceeds the device’s output, automatically limits the device’s output to 100% without any risk of overload.
Ø Equipped with comprehensive protection features, including overcurrent, overvoltage, undervoltage, and overtemperature protection, ensuring the system operates safely and reliably.
Advanced control strategies and topological structure design
Ø An improved detection technique based on instantaneous reactive power theory, which can detect harmonic currents in real time, automatically track changes in load harmonics, and features high controllability and rapid responsiveness.
Ø It employs an LCL topology filter that, even when harmonic currents are present at the output, does not introduce high-frequency IGBT switching harmonics or cause resonance, and is suitable for any on-site grid system impedance.
Highly integrated, modular, and serialized.
Ø Modular design, compact size and lightweight, high power density, and easy installation and maintenance;
Ø It can be flexibly combined and paralleled to meet different capacity requirements, enhancing equipment reliability and maintainability while achieving standardized production, thereby greatly simplifying system installation and maintenance.
Ø Independent air duct design for each module effectively prevents environmental dust from adhering and enhances the product’s heat dissipation efficiency.
Advanced user experience
Ø The device features a self-diagnosis and self-startup function. It is capable of automatically recovering from a shutdown caused by factors other than device malfunctions. Before initiating self-recovery, the device will automatically diagnose both the external power grid and itself; only after passing the diagnostic test can it proceed with self-startup. If the device attempts self-recovery three times within 30 minutes but fails each time to start up normally, it will shut down, transmit a device failure alarm to the host computer, and illuminate its own fault indicator light.
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Input
System voltage ( V )
400V AC
System voltage range
± 10%
Frequency (HZ)
50/60 ±5%
Output and Installation Method
Rated capacity ( four )
MH
C H
30 kvar, 50 kvar, 75 kvar, 100 four
100 four ,125 four ,150 four ,200 four ，
300 four ,400 four ,500kvar ,600 four
Type
Rack-mounted module
Complete cabinet
Incoming line method
Rearline
Upstream line / Bottom incoming line / Busbar running through the cabinet top
(The cable entry method for the enclosure must be specified in the contract.)
Performance metrics
Compensation rate
10 0% ( Within the ordered capacity range )
Full response time
≤ 10ms
Instant response time
≤ 100us
Dynamic current
1.2 Rated capacity output of the dual filter, 1min
Power factor setting compensation
Be equipped with
Inductive or capacitive compensation
Optional
Harmonic function
Optional (to be confirmed before ordering)
Protection
Overload protection
Automatic rate limiting in 100% Rated output
Other protections
Overvoltage protection, undervoltage protection, overtemperature protection
Operating mode
Single-unit or parallel operation
Okay.
Display and Operation
Display interface
7 Inch touchscreen
Display status
Current, voltage, power, harmonic distortion rate, and more
Operation
Multiple operation mode options, remote or local.
Communication ( RS485 Interface)
Modbus-RTU It features a remote monitoring interface and a backend database, enabling users to conveniently monitor various operating parameters of the device from internet-connected terminals.
Phase Sequence Adaptive
Be equipped with
Environmental conditions
Protection level
IP20 (Customizable)
Operating ambient temperature
-10 Celsius ~40 Celsius
Storage / Transportation temperature
-40 Celsius ~60 Celsius
Work / Storage humidity
Relative humidity 20~95% No condensation / Relative humidity 10~95%
Altitude
1000m The following (derating required for higher altitudes)
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