Smart Power Quality Correct Device (SPC)
Based on optimize and upgrade SVG, NC series Smart Power Quality Correct Device (SPC) specialize in increase power quality for distribution network, has the functions of three-phase unbalance compensation, fast regulation of reactive power and system voltage stabilization. The managerial principles and engineering philosophy are fully compatible with SGCC ‘low voltage’ project.
NC SPC detects load current through external current transducer（CT）on-line and analyzes reactive component of the load current by DSP controller, then control IGBT inverter to produce reactive current, compensates the load reactive current to meet the target of line power factor.
NC SPC detects load current through external current transducer（CT）on-line and analyzes whether the system is balance or not, meantime calculate required input current value in balance condition, and send the signal to internal IGBT, transfer unbalance current from large current phase to small current phase.
NC SPC is sampling compensation point voltage, then sending the voltage message to internal DSP controller to judge whether over the set value. When voltage over the Umax value, NC SPC output capacitive current to decrease voltage; when voltage under the Umin value, NC SPC output inductive current to increase voltage. At last, NC SPC control voltage in the normal range.
After compensation, three-phase unbalance< 3%
Germany brand IGBT chip
Texas Instrument DSP chip, high speed and reliable performance
Modular design, easy installation and maintenance
Small volume, high efficiency
Safety protection mechanism
Fault self-diagnosis, self-recovery
Stable and reliable operation
Friendly human-machine interface
Nancal Smart Power Quality Correct Device