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Wuhan Ultra High Voltage Power Technology Co., Ltd
Variable frequency resonance
NegotiableUpdate on 05/06
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Overview
Variable frequency resonance has protection functions such as overvoltage, overcurrent, zero start, and system detuning (flashover). The series resonance device adopts DSP platform technology for multiple working modes and high testing speed
Product Details
The series resonant device is mainly designed and manufactured for the AC withstand voltage test of 11kV/30MW hydroelectric generators. The reactor adopts a two separate design.
The series resonant device mainly consists of a variable frequency control power supply, an excitation transformer, a reactor, and a capacitive voltage divider.
Product Name: Variable Frequency Resonance, Variable Frequency Series Resonance, Series Resonance, Series Resonance Transformer, Series Resonance Test Equipment, Inductive Variable Frequency Resonance Voltage Endurance Device, Generator AC Voltage Endurance Resonance Boosting Device, Series Resonance Device
Product parameterstechnical parameters
| Rated output voltage | 0-50kV (AC RMS) |
| output frequency | 45～65Hz |
| Resonant voltage waveform | Pure sine wave, waveform distortion rate ≤ 1.0% |
| working system | Under full power output, the general continuous working time is 5 minutes |
| Quality factors | 10~40 |
| Frequency regulation sensitivity | 0.1Hz， Instability<0.05% |
| Experimental capacity | 5000kVA and below |
| working power supply | 220V or 380V ± 10%, power frequency 50Hz ± 5% |
Series product configuration (applicable scope (AC withstand voltage test for generators or motors with export voltage of 20kV and below, frequency: 50Hz ± 2Hz)
| Product model name | console | reactor | Incentive Transformer | voltage divider | Applicable subjects |
| - 50/50 | 10kW/220V | 50kV/1A per unit | 10kW/5kV | 50kV/500pF | Generator 0.07-0.13 μ F. 10kV cable (300mm)2)≤1.0km |
| - 75/50 | 15kW/380V | 50kV/1.5A per unit | 15kW/5kV | 50kV/500pF | Generator 0.13-0.2 μ F. 10kV cable (300mm)2)≤1.5km |
| - 225/50 | 25kW/380V | Two units of 50kV/1.5A. 50kV/1.5A per unit | 25kW/5kV | 50kV/500pF | Generator 0.2-0.27 μ F. 10kV cable (300mm)2)≤2.5km |
| - 360/50 | 30kW/380V | Two units of 60kV/2A. 60kV/2A one unit | 30kW/5kV | 50kV/500pF | Generator 0.27-0.33 μ F |
Reference table for capacitance of commonly used generators in power systems
| model | manufacturer | Rated capacity MW | Rated voltage kV | Phase capacitance μ F | |
| Thermal power generator | T2-12-2 | / | 12 | 6.3 | 0.1 |
| TQ-25-2 | / | 2 | 6.3 | 0.19 | |
| TBC-30 | / | 30 | 6.3 | 0.2 | |
| TB2-30-2 | / | 30 | 6.3 | 0.2 | |
| TQN-50-2 | / | 50 | 10.5 | 0.209 | |
| TB-60-2 | / | 60 | 10.5 | 0.25 | |
| TQN-100-2 | / | 100 | 13.8 | 0.234 | |
| WT23S-083AF3 | / | 300 | 15 | 0.29 | |
| TB-320-2 | / | 320 | 20 | 0.3 | |
| T264/640 | / | 600 | 20 | 0.368 | |
| QF-30-2 | / | 30 | 6.3 | 0.1 | |
| QF-60-2 | / | 60 | 6.3 | 0.234 | |
| QF-60-2 | / | 60 | 10.5 | 0.33 | |
| QFS-125-2 | Shanghai Electric Machinery Factory | 125 | 13.8 | 0.08～0.12 | |
| QFSN-200-2 | Harbin Electric Machinery Factory | 200 | 15.75 | 0.19～0.21 | |
| QFQS-200-2 | Dongfang Electric Machinery Factory | 200 | 15.75 | 0.1928～0.21 | |
| QFS-300-2 | Shanghai Electric Machinery Factory | 300 | 18 | 0.16～0.2 | |
| QFSN-300-2 | Shanghai Electric Machinery Factory | 300 | 18 | 0.18～0.2 | |
| QFSN-600-2 | / | 600 | 20 | 0.234 | |
| ATB-2 | GE Corporation in the United States | 352 | 23 | 0.268 | |
| TBB-200-2 | the former Soviet Union | 200 | 15.75 | 0.107 | |
| TBB-500-2 | 500 | 20 | 0.25 | ||
| TBB-320-2 | the former Soviet Union | 320 | 20 | 0.31 | |
| TBB-800-2 | 800 | 24 | 0.25 | ||
| 2-105*234 | Westinghouse Electric Company | 600 | 20 | 0.2 | |
| 50WT23E-138 | ABB | 600 | 22 | 0.253 | |
| synchronous condenser | TT-15-8 | / | 15 | 6.6 | 0.108 |
| TT-30-6 | / | 30 | 10.5 | 0.2 |
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. If there is any act of theft or copying, legal responsibility will be pursued.
2. For more information on ultra-high voltage products, please enter the product center. ：
Product features- 1. The series resonant device has protection functions such as overvoltage, overcurrent, zero position start, and system detuning (flashover). The overvoltage and overcurrent protection values can be set according to user needs. When the test sample flashes, the flashover protection action can be taken and the flashover voltage value can be recorded for experimental analysis.
- 2. The entire series resonant device is lightweight, not exceeding 40kg, making it easy to use on site.
- 3. The series resonant device has four working modes, which are convenient for users to flexibly choose according to the on-site situation and improve the test speed. The working modes are: fully automatic mode, manual mode, and automatic tuning manual boost mode.
- 4. It can store and print data in different locations, and the stored data numbers are numerical, making it convenient for users to identify and search.
- 5. The frequency starting point of the series resonant device during automatic frequency scanning can be set arbitrarily within the specified range, and the scanning direction can be selected upwards or downwards. At the same time, the LCD screen displays the scanning curve, making it convenient for users to intuitively understand whether the resonant point has been found.
- 6. Adopting DSP platform technology, it is convenient to add or remove functions and upgrade according to user needs, making the human-machine exchange interface more user-friendly.
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