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15~600 kvar SVG complete cabinet
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15~600 kvar SVG complete cabinet
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- Commodity name: 15~600 kvar SVG complete cabinet
- Commodity ID: 1362032823002353664
- 类型: Industrial automation
- 品牌: Capni
Brand: Zhiyuan New Energy Description: 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 calculation circuit and a compensation current generation circuit.
Working principle
Static Var Generator (abbreviated as SVG ) Employs modern power electronics technology and is based on high-speed DSP A new type of power reactive compensation device developed using digital signal processing technology for devices.
It consists of two main components: an instruction 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, yielding the corresponding instruction current. The instruction current computation circuit continuously monitors the current flowing in the line, converts the analog current signal into a digital signal, and then sends the digital signal to a high-speed digital signal processor. DSP ) Process the signal to separate harmonics from the fundamental wave, and use pulse-width modulation ( PWM ) The signal form sends a drive pulse to the compensation current generation circuit, driving... IGBT or IPM Power module To control the inverter to generate reactive current that meets the requirements, thereby achieving the purpose of reactive power compensation.
Basic components
SVG The system mainly includes the main... Relay KA1 Precharge relay KA2、 Precharge resistor R Filter inductor L Voltage-type PWM Rectifier bridge ( VSR ) and DC bus capacitance C Wait.
The system diagram is shown in the figure. 1-2 As shown, the resistor R For the system's precharge resistor, when... KA2 After closing, the system bus capacitor voltage charges slowly. K A1 Control the main circuit while simultaneously connecting the precharge resistor. R Short circuit; An inductor is a power-transfer interface component between power converters and power systems. On the one hand, it serves as an energy storage element; on the other hand, it filters out high-frequency switching ripple currents. Voltage-type PWM The rectifier bridge is The power conversion component of the SVG consists of insulated-gate bipolar transistors (IGBTs). It employs space vector pulse width modulation (SVPWM) technology to drive the IGBTs and generate a compensation current waveform. The DC capacitor module stores the DC energy generated by the IGBT power conversion module.
Key words:- 静止无功发生器
- SVG
- 无功补偿
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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
Rated Voltage (V)
400V AC
System voltage range
±10%
Frequency (Hz)
50/60 ±5%
Wiring method
Three-phase three-wire / Three-phase four-wire system
Output and Installation Method
Type
Complete cabinet
Rated capacity (kvar)
15 kvar, 25 kvar, 35 kvar, 40 kvar, 50 kvar, 60 kvar, 75 kvar, 100 kvar
200 kVar, 300 kVar, 400 kVar, 500 kVar, 600 kVarIncoming line method
Top-entry/Bottom-entry/Crossbar busbar passing through the top of the cabinet (the cabinet’s incoming cable connection method must be specified in the contract).
Performance metrics
Filter rate
≥90% (within the ordered capacity range and with harmonic content of the load exceeding 30% of the ordered capacity)
Filtering range
2nd to 13th harmonics (if even-order harmonics need to be addressed, please specify when placing the order)
Full response time
≤10ms
Instant response time
≤100us
Dynamic current
1.2 times the rated capacity output of the filter, 1 minute
Power factor setting compensation
Be equipped with
Inductive or capacitive compensation
Optional
Protection
Overload protection
Automatic current limiting at 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 touch screen
Display status
Current, voltage, power, harmonic distortion rate, and more
Operation
Multiple operation mode options, remote or local.
Communication (RS485 interface)
Modbus-RTU 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℃~40℃
Storage/Transportation Temperature
-40℃~60℃
Work / Storage Humidity
Relative humidity: 20–95%, no condensation / Relative humidity: 10–95%
Altitude
Below 1000m (reduce capacity for use at higher altitudes)
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