Description
Overview
GAOTek Active Power Quality Equipment Management is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave, reactive power, and three-phase load unbalance. It is connected in parallel in power grid, to detect the harmonic wave in power grid in real time, generate the reverse-phase compensation current through the converter, and dynamically filter the harmonic wave in power grid. The operation is unaffected by power grid structure and load type, and it will not produce harmonic oscillation with the system, thus perfectly realizing harmonic wave control of various loads. It can also realize dynamic reactive compensation, and control the capacitor switching, to improve the power factor of power grid. Meanwhile, it has the function of controlling the three-phase load current unbalance, thus comprehensively solving various power quality problems with power grid.
Features
- Three level topologies
- Ultra-compact Modular design
- Fastest switching frequency 25.6 kHz
- Lowest power consumption ≤ 2.5 %
- Leading dissipation technology
- Self-adaptive algorithm (ADALINE)
- THDi less than 5 % at rated load
- High filtering efficiency up to 98 %
- Fast Response time less than 5 ms
- Selective or Full compensation
- Continuous power factor correction
- Both capacitive and inductive control
- Precise PF maintain -1.0 ≤ Cos Φ ≤ 1.0
- 3 phase load balance less than 5 %
- Mitigates neutral current
- TI DSP, Infineon or Semikron IGBT
- High Stability, avoids resonance
- Both Hardware and software protection
- High Reliability Test
- Good Environmental adaptability
Technical Specifications
Rated Voltage | AC 200 V to 480 V ± 15 % |
Working Frequency | 50 or 60 Hz ± 5 % |
Circuit Topology | Three-level |
Wiring Mode | 3P3 W,3P4 W |
Scope of Filters | 2nd to 50th odd harmonics (the order can be chosen) |
Effect of Smoothing Governance | Rate of Harmonic filtering ≥ 97 %
THDi< 5 % after systematic control |
Compensation Mode | Harmonic compensation,
Reactive compensation, Three-phase load unbalance compensation |
Effect of Reactive Compensation | COS Φ ≥ 0.99 (after compensation) |
Effect of Three-Phase Unbalance Compensation | The unbalance degree of three-phase active current is less than 5 % after compensation within the rated capacity. |
Initial Response Time | < 50 us |
Response Time | < 5 ms |
Active Loss of System | < 2.5% |
Output Current Limit | Automatically restricted within 100 % of rated capacity when outputting |
Number of Units (Connected in Parallel) | ≤ 12 units (single CT) |
Mtbt | > 100,000 hours |
Controller | DSP+FPGA |
Control Algorithm | Self-adaptive control algorithm |
Communication Mode | Modbus remote communication protocol is adopted, RS485 and Can Bus be used for communication interface, which supports mobile Modbus remote communication protocol is adopted, RS485 and Can Bus be used for communication interface, which supports mobile |
Control Connection | Fiber or electrical connection |
Weight | Refer to the model selection table |
Level of Protection | IP20 |
Cooling Method | Forced air-cooling |
Noise | < 60 dB (< 45 dB during low-speed operation) |
Installation Method | Module embedded installation |
Ambient Temperature | -4 °F to 131 °F (-20 °C to 55℃) |
Relative Humidity | Maximum 95 %, without condensation |
Mounting Height Above Sea Level | ≤ 1.2 mi (2,000 m) at rated capacity; appropriately reduce the capacity if it is greater than 1.2 mi (2,000 m) |