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60~100 kvar SVG module
- Product Description
- Features & Advantages
- Technical Parameters
- Related manuals
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60~100 kvar SVG module
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- Commodity name: 60~100 kvar SVG module
- Commodity ID: 1362032837808246784
- 类型: Industrial automation
- 品牌: Capni
Brand: Zhiyuan New Energy Description: The system can be flexibly combined and paralleled to meet various capacity requirements. While achieving standardized production, it also enhances the reliability and maintainability of the equipment, greatly simplifying system installation and maintenance.
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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Outstanding reactive power compensation performance
- It can compensate for both inductive and capacitive reactive power, and the device can continuously adjust between the two.
- Improve the power factor to 0.99 The above meets the dynamic reactive power compensation requirements when system load varies.
- With three-phase unbalance compensation function
Stable and rapid compensation performance
- Real-time compensation, with a total response time of less than or equal to 10ms
- Dynamic response time is less than 200us
- The compensation capacity equals the installed capacity and is unaffected by system voltage dips.
- Fully digital control, employing an advanced control algorithm based on instantaneous reactive power theory, to precisely compensate the reactive current in the system in real time.
Powerful protection features ensure the system operates safely and reliably.
- When the device is operating, it is controlled as a current source, and there is no risk of resonance occurring with the system.
- Automatic flow-limiting function—no overcompensation or undercompensation issues.
- Equipped with comprehensive protection features, including overcurrent, overvoltage, undervoltage, and overtemperature protection.
- Friendly human-machine interface, featuring high definition. 7 Inch color touchscreen with Chinese interface, displaying system and device operating parameters in real time, featuring fault alarms and event recall functionality.
Modular design enhances equipment quality.
- The power circuit and control circuit adopt a modular design, which, while enabling standardized production, also enhances reliability and maintainability during operation, greatly simplifying system installation.
- The high-reliability parallel-operation mode enables devices to be connected in parallel, meeting diverse capacity requirements.
Advanced user experience
- The device features a self-diagnosis and self-startup function. It is capable of automatically recovering from a shutdown caused by factors other than issues with the device itself. Before initiating self-recovery, the device performs an automatic diagnosis of both the external power grid and the device itself; only after passing the diagnostic test can it proceed with self-startup. 30 Self-recovery within minutes 3 Next, if neither can start up normally, shut down the machine and send a fault alarm to the host computer, and illuminate the device’s own fault indicator light.
- The IoT monitoring function enables the device to collect data—including three-phase system voltage, current, active power, reactive power, power factor, harmonic content, and harmonic current output from the device—at specified time intervals, and then transmit this data via... GPRS The module is uploaded to the database. Terminal web page and... APP It can display the above-mentioned current and historical data, provide necessary data filtering functions, and also enable... Excel Formal output capable of displaying and recording current and historical faults; remote. APP The terminal web page can perform necessary control and parameter settings on the device, such as start/stop operations and overcurrent value adjustments.
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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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