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LV Thyristor Switching Filter(TSF)

The main function of LV Thyristor Switching Filtering Compensation Device(TSF) is to dynamically eliminate harmonics and compensate the power factor according to the load conditions. This device is easy to operate and maintain, has fast reponse speed and less inevestment, is widely used in places with the load of certain fluctuations in metallurgy, coal mine and other industries.

Brief Introduction
The main function of the lV thyristor switching filter compensation device (TSF) is to dynamically eliminate harmonics and compensate the power factor according to load conditions. The device is easy to operate and maintain, has fast response speed and low investment, and is widely used in places with certain fluctuations in load in metallurgy, coal mine and other industries.
Low-voltage thyristor switching filter compensation device (TSF) function is as belows,
*Suppress harmonic interference caused by nonlinear load
* Improve power factor
* Reduce network loss
*Optimization of reactive power
*Increase productivity

PINCIPLE
Low-voltage thyristor switching filtering compensation device (TSF) is a filtering compensation device inpower distribution system based on thyristor/vacuum contactor/circuit breaker switching capacitor. It is mainly composed of control system, thyristor/vacuum contactor/circuit breaker, capacitor and reactor. 
capacitors can be divided into multi-bank units to achieve hierarchical control. The TSF/FC can realize step regulation of capacitive reactive power. and the regualtion precision depends on the number of banks of the capacitor.
       The low-voltage thyristor switching filter compensation device (TSF) adopts an angle connection method. The capacity and branch configuration of the low-voltage thyristor switching filter compensation device (TSF) should be custom-designed according to reactive power variation of the nonlinear loadand the magnitude of the harmonic content, so that achieve the optimaleffect of compensation and filtering.

TECHNICAL CHARACTERISTICS

  • Quickly compensate reactive power and voltage of the system, and the response time is no more than 10ms;
  • Quickly turn on and off at zero points of the voltage and current, without introducing transients or harmonics;
  • Simultaneous control of three phases for three-phase balanced load;
  • Implement phase separation control for unbalanced loads;
  • The capacity of each bank of capacitors is considered comprehensively based on reactive power changes and harmonic magnitude;
  • Give consideration to compensation and filtering, optimize power quality;
  • Perfect and reliable protection & triggering technology of thyristor arrays.
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  • DEVICE COMPOSITION
    The low-voltage thyristor switching filtering compensation device (TSF) is composed of a controller, a filter capacitor, a filter reactor, a thyristor and other devices;

    controller

  • Realized the parallel processing of digital control signals based on DSP, realized the calculation of real-time control quantity, the dynamic response time is less than 10ms;
  • Adpoted multiple control mode, achieved the control of three-phase, phase-separated, reactive, voltage, harmonics, and combined control of voltage, reactive power and harmonics can be realized by various control methods;
  • With standard communication interface, it can be easily communicated with substation automation system to meet the needs of high-speed data transmission, fast control (direct I/O) and remote communication;
  • Passed EMC test, has strong anti-interference ability;
  • Filter capacitor

  • It adopts self-healing low-voltage filtering capacitor, built-in protection device and internal discharge resistor.
  • Can withstand 1.3 times overcurrent for a long time;
  • The capacitance error of each phase of the capacitor bank does not exceed ±8% of the design value
  • Filter Reactor

  • Using a core reactor;
  • Can withstand 1.35 times overcurrent for a long time;
  • Can withstand the maximum harmonic current;
  • The difference between the reactance value and the rated reactance value at 1.8 times rated current does not exceed -5%;
  • The three-phase deviation of the reactance value does not exceed ±2%;
  • thyristor

  • Adopt high quality thyristors at home and abroad.
  • Can withstand the maximum overcurrent.
  • High-efficient self-cooling.
  • Other device

  • Disconnector, arrester, fuse, current transformer use domestic quality products to ensure the overall performance of TSF.
  • TECHNICAL PARAMETER
    Voltage level: 380V~1000V
    Single stage maximum capacity: 600kvar
    Maximum control series: 7
    Measurement accuracy: voltage and current 0.5 class / power 1.5 class
    Power factor: ≥0.9
    Filtering Index: meet the requirements of GB/T14549-93
    Voltage fluctuation index: meet the requirements of GB/T12326-2000
    Machine power consumption: ≤1%
    Protection level: IP31
    Busbar protection: overvoltage protection, undervoltage protection
    Branchprotection: over-current, quick-break, overheating, unbalance and other protection means