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60~100 kvar PQC module
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- Technical Parameters
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60~100 kvar PQC module
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- Commodity name: 60~100 kvar PQC module
- Commodity ID: 1362032809177927680
- 类型: Industrial automation
- 品牌: Capni
Brand: Zhiyuan New Energy Description: The Power Quality Compensator (hereinafter referred to as PQC) is an intelligent, active-type new power electronic device developed by our company. It employs a highly efficient power electronic topology and advanced all-digital control technology to dynamically compensate for reactive current and harmonic current, improve the power factor, and eliminate harmonic currents.
1. Introduction
The Power Quality Compensator (hereinafter referred to as PQC) is an intelligent, active-type new power electronic device developed by our company. It employs a highly efficient power electronic topology and advanced all-digital control technology to dynamically compensate reactive currents and harmonic currents, improve the power factor, and eliminate harmonic currents.
PQC is a flexible power converter. First, PQC measures the reactive current and harmonic current generated by the load. Then, it generates new reactive and harmonic currents with the same magnitude but in opposite phases, thereby eliminating the vast majority of reactive and harmonic currents in the power supply network. By canceling out the reactive and harmonic currents in the compensation circuit, the following effects can be achieved:
▪ Significantly reduces distortion in the voltage and current waveforms of the power supply network;
▪ Significantly improves the power factor of the power supply system, reduces the design capacity of transformers, and lowers initial capital investment.
▪ Reduce losses in transformers and cables, lower their temperature, and save energy.
▪ Reduce the risk of interference to other equipment caused by system harmonics;
▪ Increase the terminal voltage to improve power quality.
2. Basic Components
The PQC system mainly consists of 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, among other components.
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, which is the power conversion component of the SVG, is 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 produced by the IGBT power conversion module.
Key words:- 工业型有源电力滤波器APF
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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 under varying system loads.
- With three-phase unbalance compensation function
Stable and rapid compensation performance
- Equipped with harmonic compensation functionality, it can effectively filter out... 2 ~50 Subharmonic current (specified order)
- 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, precisely compensates 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 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 not only enables standardized production but 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 a variety of capacity requirements.
Advanced user experience
- The device features a self-diagnosis and self-startup function. It is equipped with a self-recovery capability that allows the device to resume operation automatically after a shutdown caused by factors other than internal device issues. Before initiating self-recovery, the device performs an automatic diagnosis of both the external power grid and itself; only upon successful completion of the diagnosis can the device proceed with self-startup. In 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.
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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
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 compensation function
2 ~50 Next
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 others
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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