Power Quality Enhancement
I. Reactive power compensation and harmonic control products: Essential solutions for high-energy industrial scenarios
1. Automotive industry - BWKN series spot welding controller
Case: More than 90% of domestic automobile factories use its BWKN-3500 series spot welding reactive power compensation controller to solve the problem of voltage flicker and transient harmonic (THvD>15%) caused by spot welding machine operation.
Technical advantages: Microsecond-grade dynamic switching (Delay time can be adjusted from 20 ms up to 999 × 20 ms; Preventing capacitor overload through programmed switching strategies; Harmonic suppression rate > 40%: Increases welding success rates by minimizing harmonic interference.
2. Iron and steel metallurgy field--SVG+APF hybrid compensation system
Case: For the voltage flicker (fluctuation of 4.5%) of the electric arc furnace load, the SVC + flicker suppressor combination solution is used to reduce the fluctuation to 0.8% and eliminate the lighting stroboscopic, which meets the GB/T 12326-2008 standard.
Innovative application: Based on the low-voltage hybrid compensation architecture of the patent CN111181168B, SVG is used as the host to cooperate with multiple APFs to intelligently allocate capacity to solve the problem of insufficient harmonic compensation of a single machine, and the power saving rate reaches 7~15%.
3. Power system field - BWKG-6000 series controller
Authoritative certification: Through the testing and CQC certification of China Electric Power Research Institute, it supports four-quadrant reactive power analysis, 1~15 harmonic bar chart display, and is applied to the transformation project of the State Grid urban and rural power grids, with a cumulative deployment of more than 100,000 sets.
Functional highlights: The color Chinese interface adapts to the operation habits of grass-roots electricians, and has the function of temperature out-of-limit linkage fan, reducing the transformer failure rate by 30%.
II. Intelligent power distribution and monitoring terminal: Enhancing grid reliability and energy efficiency
1. Data center and commercial building - WBQ-3000 monitoring terminal
Case: A commercial complex uses WBQ-3000 terminal supporting SVG equipment, the power factor is increased from 0.7 to 0.98, the annual fine is 280,000 yuan, and the cable temperature rise and fall is 15 °C.
Technical support: real-time acquisition of voltage/current harmonics (accuracy ±0.5%), support MODBUS protocol remote control, historical data storage to help optimize energy efficiency.
2. New energy station - three-phase imbalance control
Solution: BWKD-12J/D controller combined with intelligent capacitor bank, automatically adjust the load between phases, reduce the neutral line current by 85%, and solve the phase imbalance problem caused by PV inverter.
III. Core components and supporting equipment: Laying the foundation of the governance system
1. Intelligent capacitors and protection devices
Self-healing capacitor: built-in temperature sensor and overvoltage fuse protection, withstand harmonic voltage exceeding the limit by 30% (step size 0.5% adjustment), life of 100,000 hours.
Composite switch: The WFC thyristor switch achieves zero-crossing switching and has a mechanical lifespan of over 1 million cycles, replacing traditional contactors to reduce inrush current by 90%.
2. Surge protection and fault protection
The microcomputer protection unit with integrated DSP chip has a response time ≤2ms, and successfully suppressed overvoltage accidents in the distribution room in the lightning-prone area, and the equipment damage rate is reduced by 60%.
IV. Technical certification and industry-university-Research collaboration
Authoritative endorsement: China Electric Power Research Institute test report, CQC/CCC certification, DL/T 721-2000 industry compliance.
Technology upgrade: jointly build an engineering technology center with colleges and universities to jointly tackle SVG/APF active filtering technology, and the target high frequency harmonic attenuation is more than 40dB.
Comparison of main product technical parameters and application effects
Product category | Product model | Key technical indicators | Representative application outcomes | Applicable field |
| Reactive power compensation controller | BWKN-3500 | Microsecond-grade switching (20 ms to 999 × 20 ms adjustable) | Effectively mitigates voltage flicker in spot welding operations, boosting yield rates by 5% | Automobile manufacturing |
BWKN-3500 | 1-15th harmonic display, four-quadrant analysis | Achieves a 30% reduction in failure rates through power grid modernization | Electric power system | |
Hybrid compensation system | SVG+APF hybrid system | Collaborative capacity allocation, patent CN111181168B | Stabilizes arc furnace voltage fluctuations, reducing variation to as low as 0.8% | Iron and steel metallurgy |
Intelligent monitoring terminal | WBQ-3000 | Voltage/current accuracy ±0.5%, MODBUS protocol | Enhances power factor to 0.98 in commercial complexes, improving energy efficiency | Data Center/Building |
| Core components | Self-healing capacitor | Withstand harmonic wave 30%, service life 100,000 hours | Extends overall system lifespan | General for industry |
Thyristor switch | Mechanical life >1 million times, inrush suppression 90% | Minimizes maintenance costs | New energy/rail transit |
Through the integration of cutting-edge hardware innovations (such as self-healing capacitors and composite switches) and advanced system-level control strategies (including hybrid compensation architecture and harmonic mitigation synergy), Wanxin Electric has established itself as a benchmark in the national power grid, automobile manufacturing, iron and steel metallurgy, data centers, and other sectors.
Mz. Feng:+86 15037366300
Manager zhang: +8615090343451
Email:zhangmengyao@wxdqi.com
Address: 200 meters east of the intersection of Kelong Avenue and Xindong Avenue, Hongqi District, Xinxiang City, Henan Province
