公开(公告)号：WO2016179470A1

公开(公告)日：2016-11-10

申请号：PCT/US2016/031148

申请日：2016-05-06

Applicant: HYDRIL USA DISTRIBUTION LLC

Inventor： BROOKS, Ronald, Dean ,  RONAN, Steve ,  NGUYEN, An

IPC: E21B33/035 ,  E21B33/064 ,  E21B34/16

CPC classification number: H02H3/10 ,  E21B33/0355 ,  E21B33/064 ,  E21B34/16 ,  H01F7/064

Abstract: Systems, methods, and computer readable media for handling overcurrent and undercurrent conditions in subsea control subsystem components include determining, by a current sensor operatively coupled to a solenoid valve 64, that an input current to a solenoid 66 is greater or lower than a predetermined threshold value, de-energizing, by a processor operatively coupled to the current sensor, the solenoid for a first period of time, re-energizing the solenoid at least three times after the first period of time, determining, by the current sensor, that during each of the at least three times the input current to the solenoid is greater or lower than the predetermined threshold value, and de-energizing the solenoid and transmitting a control signal to a control unit.

Abstract translation: 用于处理海底控制子系统部件中的过流和欠流条件的系统，方法和计算机可读介质包括通过可操作地耦合到电磁阀64的电流传感器确定到螺线管66的输入电流大于或低于预定阈值 通过可操作地耦合到电流传感器的处理器，螺线管第一时间段，在第一时间段之后至少三次重新激励螺线管，由当前传感器确定在 至少三次输入到螺线管的输入电流大于或低于预定阈值，并且断开螺线管并将控制信号发送到控制单元。

公开(公告)号：WO2016100669A1

公开(公告)日：2016-06-23

申请号：PCT/US2015/066384

申请日：2015-12-17

Applicant: HYDRIL USA DISTRIBUTION LLC

Inventor： HATTER, William, James ,  BROOKS, Ronald, Dean

IPC: E21B41/00 ,  E21B41/04 ,  G01R31/02 ,  G01R31/08

CPC classification number: H02H1/0061 ,  E21B41/0007 ,  E21B41/04 ,  G01R31/025 ,  G01R31/083 ,  H02H3/021 ,  H02H3/04 ,  H02H3/16

Abstract: A ground fault isolation system (100) and ground fault isolation circuit for isolating ground faults in electrical subsea conductor lines. The system includes a main power hub, a plurality of digital controllers operatively connected to the main power hub via electrical subsea conductor lines, and a ground fault isolation circuit (100). The ground fault isolation circuit includes a plurality of loads connected to a ground fault detection circuit (12), each load including one relay (22) on the positive power bus (18) and one relay (26) on the negative power bus (20). The ground fault detection circuit is connected to a DC to DC isolation circuit (10) that prevents a main power bus ground fault in the event of a ground fault on one of the loads. The relays are connected to a digital controller (16) on the other end, which isolates a load when a ground fault is detected, but powers the remaining unaffected loads.

Abstract translation: 一个接地故障隔离系统（100）和用于隔离电力线的接地故障的接地故障隔离电路。 该系统包括主电力集线器，经由电力海底导体线路可操作地连接到主电力集线器的多个数字控制器以及接地故障隔离电路（100）。 接地故障隔离电路包括连接到接地故障检测电路（12）的多个负载，每个负载包括在正电源总线（18）上的一个继电器（22）和负电力总线（20）上的一个继电器（26） ）。 接地故障检测电路连接到直流到直流隔离电路（10），防止在其中一个负载上发生接地故障时的主电源总线接地故障。 继电器连接到另一端的数字控制器（16），当检测到接地故障时，它将负载隔离，但为剩余的未受影响的负载供电。