公开(公告)号：US20210194235A1

公开(公告)日：2021-06-24

申请号：US16757846

申请日：2018-09-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuo KOGA ,  Atsushi OKITA ,  Mitsuru KAJI

IPC: H02H1/00 ,  G01R31/333 ,  G01R31/12 ,  G01R31/58 ,  G01R31/16 ,  H02S40/30 ,  H02S50/00

Abstract: An arc detection circuit includes a current detector and arc determination unit. The current detector detects a current flowing through a transmission line which connects an electric power supply device and an electric power conversion circuit. The arc determination unit calculates, from a result of measurement of the current, an area of interest and an area for comparison. The area of interest is an area of a region of interest defined by a predetermined frequency range and predetermined time for determination. The area for comparison is an area of a portion in which detected strength exceeds a predetermined strength threshold in the region of interest. The arc determination unit determines an electric arc has occurred when a ratio between the area of interest and the area for comparison exceeds a predetermined area-ratio threshold.

公开(公告)号：US20160352114A1

公开(公告)日：2016-12-01

申请号：US14777631

申请日：2014-03-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Mitsuru KAJI ,  Tzen Woo THAM

IPC: H02J7/00

CPC classification number: H02J7/0029 ,  H02J3/24 ,  H02J3/32 ,  H02J7/007 ,  H02J2007/0037 ,  H02J2007/004

Abstract: A storage battery controller includes a charging/discharging rate setter which sets a rate at which the battery is charged/discharged to approximate the power system frequency to rated frequency; and a charge and discharge controller which controls charge and discharge of the battery, in which the gain adjuster: when the measured charge level is lower than a lower limit of a normal range and the obtained power system frequency is within a first non-sensitive zone ranging from a first frequency lower than the rated frequency to the rated frequency, decreases the charging rate to a predetermined percentage of the charging rate; and when the measured frequency is higher than an upper limit of the normal range and the obtained power system frequency is within a second non-sensitive zone ranging from a second frequency higher than the rated frequency to the rated frequency, adjusts the discharging rate to decrease the discharging rate.

Abstract translation: 蓄电池控制器包括充电/放电速率设定器，其将电池充电/放电的速率设置为将电力系统频率近似为额定频率; 以及充电和放电控制器，其控制电池的充电和放电，其中增益调节器：当所测量的电量低于正常范围的下限时，所获得的电力系统频率在第一非敏感区域内 从低于额定频率的第一频率到额定频率，将充电率降低到充电率的预定百分比; 并且当测量频率高于正常范围的上限并且所获得的电力系统频率在从高于额定频率的第二频率到额定频率的第二非敏感区域内时，调整放电速率以减小 放电率。

公开(公告)号：US20160048118A1

公开(公告)日：2016-02-18

申请号：US14781114

申请日：2014-02-26

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hoday STEARNS ,  Kenichi WATANABE ,  Mitsuru KAJI

IPC: G05B19/042 ,  G05B19/10

CPC classification number: G05B19/106 ,  G05B19/0423 ,  G05B2219/25354 ,  G05B2219/2639 ,  H02J3/24 ,  H02J13/0006 ,  H02J2003/003 ,  Y04S10/54

Abstract: A frequency control method for use in a frequency control system including: a server that receives, from a power system operator, a power command for controlling a frequency of a power grid within a predetermined frequency; at least one distributed energy resource; and a local controller connected to the server through a communication network and to the at least one distributed energy resource, the frequency control method includes: receiving the power command from the power system operator; obtaining a frequency measurement of the power grid; predicting a next power command using the frequency measurement, before the next power command is received from the power system operator; and controlling an input or output of the at least one distributed power energy resource using the predicted next power command, before the next power command is received from the power system operator.

Abstract translation: 一种用于频率控制系统的频率控制方法，包括：服务器，从电力系统操作员接收用于控制预定频率内的电网频率的功率指令; 至少一个分布式能源; 以及通过通信网络和所述至少一个分布式能源连接到所述服务器的本地控制器，所述频率控制方法包括：从所述电力系统操作者接收所述电力指令; 获得电网的频率测量; 在从电力系统运营商接收到下一个电力指令之前，使用频率测量预测下一个电力指令; 以及在从所述电力系统运营商接收到下一个电力命令之前，使用所述预测的下一个电力指令来控制所述至少一个分布式电力能量的输入或输出。