公开(公告)号：US20080284548A1

公开(公告)日：2008-11-20

申请号：US11659306

申请日：2005-05-11

Applicant: Jorge Cavanna ,  Javier Cavanna

Inventor： Jorge Cavanna ,  Javier Cavanna

IPC: H01H73/36 ,  H02H7/00

CPC classification number: H02H1/043 ,  H01H33/022 ,  H01H33/027 ,  H01H33/121 ,  H01H33/423 ,  H01H71/123 ,  H01H71/505 ,  H02H3/52

Abstract: The present invention discloses a method for sectioning a medium-voltage distribution electric line evidencing a disturbance, wherein said method comprises the stages of: (a) evaluating a current in a medium-voltage line with a detection coil; (b) converting the intensity generated by said current by the detection coil in a potential difference, further transferring the information to a microprocessor; (c) analyzing the profile of the wave generated by the current by an algorithm to analyze harmonic levels by Fourier Series, and (d) determining the behavior or the section switch from the result obtained in (c). Step d) comprises making no count to trigger the disconnection mechanism (i) when the current value does not exceed a predetermined value for which said current is detected as a fault current; (ii) when el the wave profile corresponds to a transformer input current or in-rush current; or (iii) making a count to trigger the disconnection mechanism when the wave profile corresponds to a short-circuit exceeding the predetermined current value as fault current. Given the case of d) (ii) the method further comprises step e) comprising: (i) not triggering the disconnection mechanism when a transient fault is involved; or either, (ii) triggering the disconnection mechanism when the predetermined count number is reached. The method can simultaneously with e) ii) further comprise f) sending a RF signal to other or others parallel connected section switches at a point of the distribution line in order to be jointly disconnected. The invention also refers to section switches for electric power distribution lines for auxiliary branches where the main fine is protected by an automatic reset circuit breaker, which comprises an electronic circuit with a microcontroller capable of distinguishing a permanent fault current from a transient fault current, thereby immunizing the section switch against “in-rush” currents; and to said electronic circuit.

公开(公告)号：US08125751B2

公开(公告)日：2012-02-28

申请号：US11659306

申请日：2005-05-11

Applicant: Jorge Cavanna ,  Javier Cavanna

Inventor： Jorge Cavanna ,  Javier Cavanna

IPC: H02H3/08

CPC classification number: H02H1/043 ,  H01H33/022 ,  H01H33/027 ,  H01H33/121 ,  H01H33/423 ,  H01H71/123 ,  H01H71/505 ,  H02H3/52

Abstract: A method for sectioning a medium-voltage distribution electric line evidencing a disturbance using a section switch. The steps are: (a) detecting a current having an amplitude and a wave form profile in the medium-voltage line; (b) analyzing the wave form profile to determine whether the fault is transient, permanent, a transformer input current or transformer in-rush current; (c) and determining the behavior of the section switch from the result of the wave form profile analysis. The section switch is installed on auxiliary branches of a distribution network having a main line that is protected by an automatic reset circuit breaker. The section switch has an opening mechanism having a coil and an electronic circuit. The electronic circuit has a power source for the coil and electronic circuit, a detector to detect current and an analyzer to determine whether the detected current is a transient or a permanent fault.

Abstract translation: 一种使用断面开关对表示扰动的中压配电线进行切断的方法。 步骤是：（a）在中压线中检测具有振幅和波形轮廓的电流; （b）分析波形轮廓以确定故障是瞬态的，永久的，变压器输入电流还是变压器浪涌电流; （c）并根据波形轮廓分析的结果确定截面切换的行为。 分段开关安装在具有由自动复位断路器保护的主线的配电网的辅助分支上。 截面开关具有带有线圈和电子电路的开启机构。 电子电路具有用于线圈和电子电路的电源，用于检测电流的检测器和分析器，以确定检测到的电流是瞬态还是永久故障。