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    METHOD OF PREVENTING MISOPERATIONS ABOUT A RELAY PROTECTION DEVICE IN A SMART SUBSTATION
    2.
    发明申请
    METHOD OF PREVENTING MISOPERATIONS ABOUT A RELAY PROTECTION DEVICE IN A SMART SUBSTATION 有权
    防止智能基站中继电保护装置发生故障的方法

    公开(公告)号：US20170060670A1

    公开(公告)日：2017-03-02

    申请号：US15076361

    申请日：2016-03-21

    申请人： XJ GROUP CORPORATION ,  XJ ELECTRIC CO.,LTD ,  XUCHANG XJ SOFTWARE TECHNOLOGIES LTD ,  STATE GRID CORPORATION OF CHINA

    发明人： Leitao Wang ,  Zhen Li ,  Junhong Qiu ,  Xing Liu ,  Lintao Ma ,  Lunshan Zhang ,  Ruizhi Jiang ,  Xinling Li ,  Juan Ji ,  Meng Li ,  Bao Zhao ,  Huawei Jia

    IPC分类号： G06F11/07 ,  H02H1/00

    CPC分类号： G06F11/0721 ,  G06F11/004 ,  G06F11/0751 ,  H02H1/0092

    摘要： The present invention relates to a method of preventing misoperation about a relay protection device in a smart substation. Reversely operating CPU operation results of two operation records about the relay protection device, in order to form corresponding disassembler codes. According to disassembler codes, calculating similarity of the CPU operation results of the two operation records about the relay protection device by a structured method. Judging whether the similarity is greater than a set threshold or not. If the similarity is greater than the set threshold, the CPU operation results of the two operation records about the relay protection device to be the same, otherwise, the CPU operation results of the two operation records about the relay protection device are judged to be different. The present invention avoids the misoperations of the relay protection device on operation.

    摘要翻译： 本发明涉及一种防止智能变电站中继电保护装置误操作的方法。 反向操作CPU运行结果的两个操作记录关于继电保护装置，以形成相应的反汇编代码。 根据拆卸代码，通过结构化方法计算关于继电保护装置的两个操作记录的CPU操作结果的相似度。 判断相似度是否大于设定的阈值。 如果相似度大于设定阈值，则关于继电保护装置的两个操作记录的CPU操作结果相同，否则判断为继电保护装置的两个操作记录的CPU运行结果不同 。 本发明避免了继电器保护装置工作时的误操作。

    METHOD OF DIFFERENTIAL PROTECTION IN THE POWER DISTRIBUTION NETWORKS BASED ON PHASE DIFFERENCE PRINCIPLES
    4.
    发明申请
    METHOD OF DIFFERENTIAL PROTECTION IN THE POWER DISTRIBUTION NETWORKS BASED ON PHASE DIFFERENCE PRINCIPLES 审中-公开
    基于相位差分原理的功率分配网络中的差分保护方法

    公开(公告)号：US20170038785A1

    公开(公告)日：2017-02-09

    申请号：US15076638

    申请日：2016-03-21

    申请人： XJ GROUP CORPORATION ,  XJ ELECTRIC CO.,LTD ,  XUCHANG XJ SOFTWARE TECHNOLOGIES LTD ,  JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUTE ,  STATE GRID CORPORATION OF CHINA

    发明人： Qiang Niu ,  Jingwan Liang ,  Shuai Jiang ,  Junhong Qiu ,  Huawei Jia ,  Meng Li ,  Lei Gao ,  Yongjian Tao ,  Yongxin Liu ,  Feng Li ,  Xintao Dong ,  Yake Xi

    IPC分类号： G05F1/66 ,  H02H3/26 ,  G05B15/02 ,  H02H1/00

    CPC分类号： G05F1/66 ,  G05B15/02 ,  H02H3/265

    摘要： The invention relates to a method of differential protection in the power distribution networks based on phase difference principles. The method comprises the following steps: collecting the current and voltage signals of each loading switch; calculating phase difference between the corresponding currents at two adjacent loading switches, wherein at least one of the two adjacent loading switches accords with ΔIφmax>n·ΔIT+ΔIdz; tripping the two adjacent loading switches if the phase difference corresponding to the two adjacent loading switches being greater than a threshold then a section between the two adjacent loading switches being determined as a fault section. The method only needs to calculate the phase difference between the corresponding currents at the two adjacent loading switches, and achieves the fault determination according to the phase difference being greater than the threshold. The method has low data synchronizing requirements, and processes the fault determination according to the collected signals. The time required for the entirely determining process is short, and a fast protecting response is achieved, thus the problem of slowly protecting response in the existing relay-protection method for the power distribution networks is solved.

    摘要翻译： 本发明涉及一种基于相位差原理的配电网差动保护方法。 该方法包括以下步骤：收集每个负载开关的电流和电压信号; 计算两个相邻负载开关处的相应电流之间的相位差，其中两个相邻负载开关中的至少一个与ΔIφmax> n·ΔIT+ΔIdz一致; 如果与两个相邻负载开关相对应的相位差大于阈值，则两个相邻负载开关之间的跳闸被确定为故障部分。 该方法仅需要计算两个相邻负载开关处的相应电流之间的相位差，并根据相位差大于阈值来实现故障确定。 该方法具有低数据同步要求，并根据收集的信号处理故障确定。 完全确定过程所需的时间短，实现了快速的保护响应，解决了现有的配电网络继电保护方法中缓解响应的问题。