公开(公告)号：US20180013287A1

公开(公告)日：2018-01-11

申请号：US15644262

申请日：2017-07-07

申请人： University of Hawai'i

发明人： Leon Roy Roose ,  Staci T.C.L. Sadoyama ,  Hsun Jou ,  Marc Minoru Matsuura

IPC分类号： H02J3/18 ,  G05B19/042

CPC分类号： H02J3/1828 ,  G05B19/042 ,  G05B2219/2639 ,  Y02E40/30

摘要： In one embodiment, a computing device determines real and reactive power flows at a transformer at a given time, and computes, based on the real power and reactive power flow at the transformer, an amount of reactive power adjustment to produce a desired voltage differential across the transformer. The computing device may then adjust the reactive power flow from a secondary side of the transformer at substantially the given time based on the computed amount.

公开(公告)号：US10218178B2

公开(公告)日：2019-02-26

申请号：US15644262

申请日：2017-07-07

申请人： University of Hawai'i

发明人： Leon Roy Roose ,  Staci T. C. L. Sadoyama ,  Hsun Jou ,  Marc Minoru Matsuura

IPC分类号： H02J3/18 ,  G05B19/042

摘要： In one embodiment, a computing device determines real and reactive power flows at a transformer at a given time, and computes, based on the real power and reactive power flow at the transformer, an amount of reactive power adjustment to produce a desired voltage differential across the transformer. The computing device may then adjust the reactive power flow from a secondary side of the transformer at substantially the given time based on the computed amount.

公开(公告)号：US11146103B1

公开(公告)日：2021-10-12

申请号：US16198761

申请日：2018-11-21

申请人： University of Hawai'i

发明人： Kevin Lee Davies ,  Thai Tran ,  Saeed Sepasi ,  Leon Roy Roose

IPC分类号： H02J13/00 ,  H02J9/06 ,  H02J3/38 ,  G05B19/042 ,  G06F9/4401

摘要： In one embodiment, a device configured to monitor a power grid determines whether a configuration of a field-programmable gate array (FPGA) of the device requires updating, the configuration comprising one or more digital signal processor (DSP) applications (apps), and updates the configuration when required. The device measures grid metrics of a power grid (e.g., voltage and current), and also determines GPS-based time for synchronizing zero crossing events of the grid metrics to the GPS-based time. According to the one or more DSP apps, the grid metrics can be processed by the device, and then the processed grid metrics and synchronized zero crossing events can be shared. In one specific embodiment, processing the grid metrics according to the one or more DSP apps comprises estimating an impedance of one or more individual circuit segments based on measured grid metric response to a transient event (e.g., active or passive events).