公开(公告)号：US20170346287A1

公开(公告)日：2017-11-30

申请号：US15600818

申请日：2017-05-22

Applicant: LSIS CO., LTD.

Inventor： Yong-Kil CHOI

IPC: H02J3/18 ,  H02J3/26 ,  H02J3/16 ,  H03K17/72 ,  H02J3/01

CPC classification number: H02J3/1821 ,  H02J3/01 ,  H02J3/16 ,  H02J3/1864 ,  H02J3/26 ,  H03K17/72 ,  Y02E40/12

Abstract: The present disclosure relates to a reactive power compensation system includes a first measurement unit, a second measurement unit, a reactive power compensation unit, and a controller. The first measurement unit measures impedance of each of at least one load. The second measurement unit measures a voltage and current provided to the at least one load. The reactive power compensation unit compensates the leading reactive power or the lagging reactive power. The controller monitors a change of the impedance in real time, checks a change of the voltage or current according to the change of the impedance, and controls the reactive power compensation unit according to a result of the check to compensate the leading reactive power or the lagging reactive power.if

公开(公告)号：US20170344046A1

公开(公告)日：2017-11-30

申请号：US15585217

申请日：2017-05-03

Applicant: LSIS CO., LTD.

Inventor： Yong-Kil CHOI

IPC: G05F1/70

CPC classification number: G05F1/70 ,  H02J3/01 ,  H02J3/16 ,  H02J3/18 ,  H02J3/26 ,  H02J2003/002 ,  Y02E40/34 ,  Y02E40/40 ,  Y02E40/50

Abstract: The present disclosure relates to a reactive power compensation system including a reactive power compensation unit for measuring compensate reactive power, an impedance measurement unit for measuring an impedance value of each of a plurality of loads, and a learning control unit for controlling the reactive power compensation unit based on the measured impedance value.

公开(公告)号：US20180003747A1

公开(公告)日：2018-01-04

申请号：US15606484

申请日：2017-05-26

Applicant: LSIS CO., LTD.

Inventor： Yong-Kil CHOI

IPC: G01R21/00 ,  H02J3/18

Abstract: The present disclosure relates to a device of monitoring a reactive power compensation system to compensate reactive power, the device including a measurement unit configured to acquire voltage data, current data, and a phase angle from each constituent device, a power performance index calculation unit configured to calculate power performance index data including at least one of power factor data, flicker data, and harmonics data based on the acquired voltage data, current data, and phase angle, and a controller configured to analyze and evaluate the calculated power performance index data based on a preset situation.

公开(公告)号：US20170358983A1

公开(公告)日：2017-12-14

申请号：US15585215

申请日：2017-05-03

Applicant: LSIS CO., LTD.

Inventor： Yong-Kil CHOI

IPC: H02M1/42 ,  G01R25/00

CPC classification number: H02M1/42 ,  G01R25/00 ,  H02J3/01 ,  H02J3/1864 ,  Y02E40/30

Abstract: The present disclosure relates a reactive power compensation system including a detection unit for acquiring loading state information of a plurality of loads, a reactive power compensation unit for compensating reactive power, and a controller for controlling the reactive power compensation unit to perform flicker compensation or power factor compensation based on a control signal according to the loading state information.

公开(公告)号：US20170350924A1

公开(公告)日：2017-12-07

申请号：US15599198

申请日：2017-05-18

Applicant: LSIS CO., LTD.

Inventor： Yong-Kil CHOI

IPC: G01R21/00 ,  H02J13/00 ,  H02J3/18

CPC classification number: G01R21/003 ,  H02J3/18 ,  H02J3/1864 ,  H02J13/0006

Abstract: The present disclosure relates to a device for measuring a loss in a reactive power compensation system to compensate reactive power, which includes at least one load connected to a receiving end, a reactive power compensation unit connected to the receiving end and comprising at least one device, at least one detection unit provided at the at least one device and detecting a voltage, a phase of a voltage, current, and a phase of current, a measurement unit measuring voltage data, current data, and a phase angle based on the voltage, the phase of a voltage, the current, and the phase of current detected by the at least one detection unit, and a loss calculation unit calculating loss power of the at least one device based on the measured voltage data, current data and phase angle.