COMBINED PLANT FOR GLASE ICE AND REACTIVE POWER COMPENSATION Russian patent published in 2009 - IPC H02G7/16 H02J3/18 

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering and may be used on electric substations. Combined plant for glase ice melting and reactive power compensation contains feed transformer, the first high-voltage disconnecting link and the first three-phase reactor. The second three-phase reactor is coupled with the above first reactor in serial connection and shunted by the second high-voltage disconnecting link. The high-voltage bridge-converter is made up from completely controlled hardware and bypass diodes connected in parallel. A capacitor bank is available at direct current output of the high-voltage bridge converter. Each pole output of the above capacitor bank is coupled with single-phase disconnecting link. Plant control system is synchronised with the network through separate resonance transformer. The first and the second control system outputs are connected to the first and second disconnecting link respectively. The third control system output is connected to the high-voltage bridge converter. Control system is implemented so that frequency and pulse-width modulation factor can be changed in the completely controlled hardware of the high-voltage bridge converter.

EFFECT: reduced switching of power equipment when melting mode is switched over to compensation mode and increased fast response in compensation mode.

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