THE METHOD OF CALCULATING THE ENERGY SAVING EFFECT FROM THE APPLICATION OF THE SHUNT ACTIVE FILTER IN THE THREE-PHASE FOUR-WIRE POWER SYSTEM WITH THE VIOLATION OF ITS OWN LOSSES

Abstract

The deduction  of  settlement  ratios  and the development  of  a  method  for  calculating  the energy saving effect from the use of a shunt active filter in a three-phase four-wire power supply system and its testing on the example of monitoring the parameters of electricity consumption of the hostel number 7 KNUTD.  Based  on  the  symbolic  method  of  calculating  three-phase  circles,  the  formulas  for calculating the electrical resistances of phase and neutral wires of a three-phase four-wire system based on measurements of stresses of reference loads carried out by AEEAS KNUTD are grounded. The energy saving
effect of using a shunt active filter in a three-phase four-wire system of power supply is established taking into account its own losses, which are determined on the basis of monitoring of parameters of electric energy consumption and calculated values of resistance of wires. Findings.The work substantiates the methodology for calculating the energy saving effect from the
use of a parallel active filter in the three-phase four-wire power supply system, taking into account its own losses, and on the example of monitoring the parameters of electricity consumption of the hostel number 7 KNUTD demonstrated the possibility of reducing by 10-20% energy losses in the transmission line with the use of modern shunt active filters. Originality.The new analytical dependences of the operating voltages of the reference loads on the electrical resistances of phase and neutral wires of the three-phase four-wire power supply system used to calculate the values of  the  indicated  resistances  based  on the  results  of  phase  voltage  measurements  are established. Practical value. A new method of calculating the energy saving effect from the use of a shunt active filter in a three-phase four-wire power supply system is formulated, which makes it possible to assess the expediency of using shunt active power filters and formulate requirements for their parameters in order to obtain the desired effect for a particular object of power consumption.