PQC-HPFC hybrid reactive power compensation adopts the configuration scheme of combining PQC-ASVG Advanced Static var Generator and switching capacitor/reactor, and implements different reactive compensation schemes according to the actual needs of users on site, so as to achieve the best combination of price and effect.
PQC-HPFC hybrid reactive power compensation device consists of two parts: Static Var Generator and switching capacitor / reactor reactive compensation unit. In PQC-HPFC hybrid dynamic reactive power compensation device, each unit is designed and produced in the method of low power, small volume and low cost, and both of them are optional, and can be combined in the best and flexible way according to the actual reactive state of the site, so as to achieve the optimum ratio of operation effect and cost.
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A united system of thyristor switched capacitor (TSC) and PQC-SVG static var generator was proposed to improve voltage regulation, stability, and power factor in ac transmission and distribution systems. The TSC is consisted of multi-groups binary-coded capacitors, which is mainly used for large capacity var compensation step by step. PQC-SVG compensates small capacity reactive power continuously, and filters harmonics generated by the nonlinear load.
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When PQC-SVG compensates harmonics with traditional control method, it may run into oscillation if the PQC-SVG controller does not consider the interaction between TSC and PQC-SVG, so a selective harmonic compensation method is present to solve the problem. A predictive control algorithm for TSC is studied to have a correct compensation when the load changes rapidly. The proposed united compensation system can implement continuous reactive power and harmonic currents compensation cost-effectively.
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Modular Design
PQC Static Var Generator has a advanced modular design. Usually PQC-SVG consists of one or severalVG S modules and an optional touched LCD Human Machine Interface. Each SVG module is an independent harmonic filtering system, and users can change the harmonic filtering system rating by adding or removing SVG modules.
According to the mounting type, PQC-SVG can be divided into Rack Modular SVG,Wall-mounted SVG and free landing SVG.
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| Rack modular SVG | Wall mounted modular SVG |
Model Description
PQC-HPFC hybrid Power Factor Correction series cover from 100kVAr to 500kVAr per cabinet, support SVG control thyristor switched capacitors(Or Contactor switched type).
| SN | Item | Rated Capacity |
Factory Model |
Dimensions (W*D*H,MM) |
N.W (KG) |
Packing Size (W*D*H,MM) |
G.W (KG) |
| 1 | HPFC | 100kVAr | PQC-HPFC/100-4-4L-50k | 800*1000*2200 | 300 | 990*1140*2455 | 340 |
| 2 | HPFC | 150kVAr | PQC-HPFC/150-4-4L-50k | 800*1000*2200 | 320 | 990*1140*2455 | 360 |
| 3 | HPFC | 200kVAr | PQC-HPFC/200-4-4L-50k | 800*1000*2200 | 340 | 990*1140*2455 | 380 |
| 4 | HPFC | 250kVAr | PQC-HPFC/250-4-4L-50k | 800*1000*2200 | 360 | 990*1140*2455 | 400 |
| 5 | HPFC | 300kVAr | PQC-HPFC/300-4-4L-100k | 800*1000*2200 | 380 | 990*1140*2455 | 420 |
| 6 | HPFC | 350kVAr | PQC-HPFC/350-4-4L-100k | 800*1000*2200 | 380 | 990*1140*2455 | 440 |
| 7 | HPFC | 400kVAr | PQC-HPFC/400-4-4L-100k | 800*1000*2200 | 400 | 990*1140*2455 | 460 |
| 8 | HPFC | 450kVAr | PQC-HPFC/450-4-4L-100k | 800*1000*2200 | 400 | 990*1140*2455 | 480 |
| 9 | HPFC | 500kVAr | PQC-HPFC/500-4-4L-100k | 1000*800*2200 | 420 | 990*1140*2455 | 500 |
| Technical Data and Specifications | ||||
| Rated Voltage | 400V(300~456V) | |||
| Rated Capacity |
50kVAr~500kVAr |
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| Mains Frequency | 50/60Hz±5% | |||
| Circuit Topology | Three Level | |||
| Multi Compensation Mode | Harmonic compensation, reactive compensation, three-phase load unbalance compensation | |||
| Filter range | 2nd~25th odd order harmonics (Selective or Full compensation) | |||
| Rated of Harmonic Reduction | ≥97% (For typical harmonic order distortions) | |||
| Filtering Performance | Typically, THDi≤ 5% at rated load(Even with most complex loads). | |||
| Target Power Factor |
The system PF is greater than 0.98 after compensation within the rated capacity. |
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| 3 Phase Load Balancing Effect | ≤5%, Mitigate negative and zero sequence | |||
| Neatral Filtering Capacity | 3 times the rated filter current(in case of 4 wire device) | |||
| ASVG Switching/control frequency | 25.6kHz | |||
| ASVG response time | ≤5ms | |||
| Capacitor control interface | 16 Ways | |||
| Capacitor Switching Switch | Thyristor, Contactor | |||
| Capacitor response time | ≤1s | |||
| Active loss of system | ≤2.5% | |||
| Output current limit | Automatically limited within 100% of rated capacity to output | |||
| Control algorithm | Intelligent FFT,Self-adaptive control algorithm | |||
| Controller | DSP+FPGA | |||
| Protection | Hardware protection, Software protection | |||
| Control connection | Fiber or electrical connection | |||
| Human Machine Interface | 7 inch touched TFT LCD HMI | |||
| Communication protocols | Adopt Modbus remote communication protocol; communication interface adopts RS485 and CAN bus, supporting mobile phone APP operation. | |||
| Noise | <60db (<45db during low-speed operation) | |||
| Installation method | Module embedded(Rack),wall mounted, free landing | |||
| Level of protection | IP20 | |||
| Cooling method | Speed regulation intelligent air cooling PWM Fans | |||
| Color | RAL 7035 Light Grey | |||
| Ambient temperature | -20~55℃ | |||
| Relative humidity | Maximum 95%, without condensation | |||
| Mounting height above sea level | ≤2000 at rated capacity; appropriately reduce the capacity if it is > 2000(1% derating per 100m) | |||
| Qaulifications | CE, IEEE61000,Type Test Report | |||
| Compliance with Standards | IEEE 519, ERG5/4 | |||
Industry
Traditional four automotive manufacturing process, although different manufacturers technology and process has a certain degree of differences, but in recent years with automation transformation, such as high-end CNC punch of flexible automatic production line, coating robots, welding robots, lifting robot industrial robots put into use.Automation equipment not only improves work efficiency and reduces the degree of labor, but also produces a series of problems.
Problem
Automotive manufacturing industry is a typical heavy industry industry, with its electricity demand, large power demand, low power factor of power equipment, many typical non-linear load and impact load equipment, and high power quality requirements.
Automobile manufacturing industry is a typical heavy industry industry, its load is large, and there are a large number of impact load, resulting in rapid load change, so that the traditional capacitors reactive power compensation can not keep up with the change of load.
Solution
For the fast change of loads, we configure the corresponding Static Var Generator to realize best power factor compensation. We installed 300kVAr hybrid Power Factor Correction panel at site, maintain Power Factor at 1.00 real time.
Technical Performance
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Customer Benefits
After installed hybrid Power Factor Correction systems(Static Var Generator control TSC), the site data compliance with IEEE 519, G5/4, EN 50160 and also other power quality standards and recommendations:
