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1.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
Applicant: XJ GROUP CORPORATION , XJ ELECTRIC CO.,LTD , XUCHANG XJ SOFTWARE TECHNOLOGIES LTD , STATE GRID CORPORATION OF CHINA
Inventor： Leitao Wang , Zhen Li , Junhong Qiu , Xing Liu , Lintao Ma , Lunshan Zhang , Ruizhi Jiang , Xinling Li , Juan Ji , Meng Li , Bao Zhao , Huawei Jia
CPC classification number: G06F11/0721 , G06F11/004 , G06F11/0751 , H02H1/0092
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10158223B2
公开(公告)日：2018-12-18
申请号：US13652488
申请日：2012-10-16
Applicant: XJ GROUP CORPORATION , STATE GRID CORPORATION OF CHINA
Inventor： Xing Liu , Xiaohui Song , Yong Wei , Guobin Li , Dingguo Wang , Junfeng Di
Abstract: The present invention relates to a method for generating a current differential protection supernode based on an electrical topology of a regional distribution network, which belongs to the fields of automation of electrical power systems and relay protection. The present invention generates several supernode differential protection elements, i.e., differential protection objects, and backup differential protection elements by circularly using a depth-first search method according to the inputted branch-node associative data table reflecting the electrical topology of the distribution network. the present invention can accurately located and quickly isolate the faults in the distribution network system, reduce the probability of power cut in the non-fault lines, reduce the coverage of power cut, quickly reconstruct and self-heal the distribution network, and solve the effect of the distributed access system on the distribution network protection.
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公开(公告)号：US09904588B2
公开(公告)日：2018-02-27
申请号：US15076361
申请日：2016-03-21
Applicant: XJ GROUP CORPORATION , XJ ELECTRIC CO., LTD , XUCHANG XJ SOFTWARE TECHNOLOGIES LTD , STATE GRID CORPORATION OF CHINA
Inventor： Leitao Wang , Zhen Li , Junhong Qiu , Xing Liu , Lintao Ma , Lunshan Zhang , Ruizhi Jiang , Xinling Li , Juan Ji , Meng Li , Bao Zhao , Huawei Jia
CPC classification number: G06F11/0721 , G06F11/004 , G06F11/0751 , H02H1/0092
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US08773828B2
公开(公告)日：2014-07-08
申请号：US13651482
申请日：2012-10-15
Applicant: XJ Group Corporation , State Grid Corporation of China
Inventor： Xiaohui Song , Xing Liu , Yong Wei , Dingguo Wang , Guobin Li
CPC classification number: H02H3/38 , H02H1/0069 , H02H7/226
Abstract: The present invention relates to a busbar differential protection method. For each bay, firstly, zero-crossing point of voltage is determined according to sample values of voltage, then the current values are re-sampled on a current fitting curve by using zero-crossing point of voltage as a synchronous signal according to a given sampling time period to get a sample sequence. The sample sequence is comprised of current values of sampling points and sample serial numbers. The sample serial numbers of sampling points at the same time are same for the sample sequence of respective interval. Finally, computing is done to sample sequences of respective intervals, and differential protection is achieved.
Abstract translation: 母线差动保护方法技术领域本发明涉及一种母线差动保护方法。 对于每个隔间，首先，根据电压的采样值确定电压的过零点，然后根据给定的电压值，通过使用过零点电压作为同步信号在电流拟合曲线上重新采样电流值 采样时间段以获得采样序列。 采样序列由采样点和采样序列号的当前值组成。 对于各个间隔的采样序列，同时采样点的采样序列号相同。 最后，对各个间隔的序列进行计算，实现差分保护。
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公开(公告)号：US09667131B2
公开(公告)日：2017-05-30
申请号：US15076662
申请日：2016-03-22
Applicant: XJ GROUP CORPORATION , XUCHANG XJ SOFTWARE TECHNOLOGIES LTD , XJ ELECTRIC CO., LTD , XI'AN JIAOTONG UNIVERSITY , STATE GRID CORPORATION OF CHINA
Inventor： Xing Liu , Ruizhi Jiang , Yuanhang Yang , Guobing Song , Guobin Li , Xu Zhu , Peiyao Liu
CPC classification number: H02M1/32 , H02H7/12 , H02M7/06 , H02M7/12 , H02M7/155 , H02M7/521 , H02M2001/0009
Abstract: The present invention relates to a differential protection method for bridge circuit in current converter control system, including the steps of: 1). obtaining sample values of the three-phase current for the current converter control system at AC side thereof, and calculating the absolute value of each sampling value respectively; 2). calculating a value of current at the AC side of the current converter control system; and 3). determining whether to perform a relay protection for the current converter control system according to the value current at the AC side of the current converter control system. The method of the present invention provided, is fast, convenient, and with a small amount of calculation. The current converter control system determines whether to perform a relay protection in a short time. Also it reduces the possibility that the equipment burned because of cannot break the circuit in time.
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6.发明申请DIFFERENTIAL PROTECTION METHOD FOR BRIDGE CIRCUIT IN CURRENT CONVERTER CONTROL SYSTEM 有权电流转换器控制系统中桥接电路的差分保护方法公开(公告)号：US20170005569A1
公开(公告)日：2017-01-05
申请号：US15076662
申请日：2016-03-22
Applicant: XJ GROUP CORPORATION , XUCHANG XJ SOFTWARE TECHNOLOGIES LTD , XJ ELECTRIC CO.,LTD , XI'AN JIAOTONG UNIVERSITY , STATE GRID CORPORATION OF CHINA
Inventor： Xing Liu , Ruizhi Jiang , Yuanhang Yang , Guobing Song , Guobin Li , Xu Zhu , Peiyao Liu
CPC classification number: H02M1/32 , H02H7/12 , H02M7/06 , H02M7/12 , H02M7/155 , H02M7/521 , H02M2001/0009
Abstract: The present invention relates to a differential protection method for bridge circuit in current converter control system, including the steps of: 1). obtaining sample values of the three-phase current for the current converter control system at AC side thereof, and calculating the absolute value of each sampling value respectively; 2). calculating a value of current at the AC side of the current converter control system; and 3). determining whether to perform a relay protection for the current converter control system according to the value current at the AC side of the current converter control system. The method of the present invention provided is fast, convenient, and with a small amount of calculation. The current converter control system determines whether to perform a relay protection in a short time. Also it reduces the possibility that the equipment burned because of cannot break the circuit in time.
Abstract translation: 本发明涉及电流转换器控制系统中桥式电路的差动保护方法，包括步骤：1）。 获取电流转换器控制系统在其AC侧的三相电流的采样值，分别计算每个采样值的绝对值; 2）。 计算当前转换器控制系统的AC侧的电流值; 和3）。 根据当前变流器控制系统的AC侧的值电流，确定是否对电流变换器控制系统进行继电保护。 本发明提供的方法快速，方便，且计算量少。 电流转换器控制系统确定是否在短时间内执行继电保护。 此外，它减少了设备因不能及时断开电路而烧毁的可能性。
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7.发明申请RAPID ONLINE DIAGNOSIS METHOD OF OPEN-CIRCUIT FAULT FOR HIGH-POWER RECTIFIER 审中-公开高功率整流器开路故障的快速在线诊断方法公开(公告)号：US20170003334A1
公开(公告)日：2017-01-05
申请号：US15076160
申请日：2016-03-21
Applicant: XJ GROUP CORPORATION , XUCHANG XJ SOFTWARE TECHNOLOGIES LTD , XJ ELECTRIC CO.,LTD , XI'AN JIAOTONG UNIVERSITY , STATE GRID CORPORATION OF CHINA
Inventor： Xing Liu , Xiaobo Wang , Ruizhi Jiang , Yuanhang Yang , Guobing Song , Xu Zhu , Yanhua Zhang
CPC classification number: H02H7/1255 , G01R31/026
Abstract: The invention relates to rapid online diagnosis method of high-power rectifier open-circuit fault, including: 1) collecting actual output direct current value id(t0) and three phase input electric current instantaneous values ia(t0), ib(t0) and ic(t0) of rectifier at t0 moment, and calculating theoretical output direct current value id′ of the rectifier according to ia(t0), ib(t0) and ic(t0); 2) comparing id′ (t0) and id(t0), when id′ (t0) is not more than k1×id(t0), comparing absolute value of maximal three phase input electric current instantaneous value and pre-set threshold value A1, if the maximal three phase input electric current instantaneous value is not less than A1, the rectifier appears open-circuit fault. The inventive method is simple, with no complicated step for performing fault diagnosis, of course, the short fault diagnosis period and tripping protection occupation time is short, but it also can protect the rectifier effectively and prevent equipment damage from longtime working under fault condition.
Abstract translation: 本发明涉及大功率整流器开路故障的快速在线诊断方法，包括：1）收集实际输出直流电流值id（t0）和三相输入电流瞬时值ia（t0），ib（t0）和 （t0），ib（t0）和ic（t0）计算整流器的理论输出直流电流值id'; 2）比较id'（t0）和id（t0），当id'（t0）不大于k1×id（t0）时，比较最大三相输入电流瞬时值和预设阈值A1的绝对值 如果最大三相输入电流瞬时值不小于A1，则整流器出现开路故障。 本发明方法简单，故障诊断步骤不复杂，故障诊断周期短，跳闸保护占用时间短，但也可有效保护整流器，防止故障时长时间工作的设备损坏。
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8.发明授权Centralized and networked protection system and method of a regional distribution network 有权区域分布网络的集中和联网保护系统和方法公开(公告)号：US08959393B2
公开(公告)日：2015-02-17
申请号：US13651423
申请日：2012-10-14
Applicant: XJ Group Corporation , State Grid Corporation of China
Inventor： Xiaohui Song , Xing Liu , Yong Wei , Dingguo Wang , Jungang Li
CPC classification number: G06F11/1441 , G06F11/3058 , H02H1/0084 , H02H7/261 , H02H7/268 , H02J13/0062 , H02J13/0079 , H02J2003/007 , Y02E60/725 , Y02E60/76 , Y02E60/7838 , Y04S10/20 , Y04S40/124 , Y04S40/22
Abstract: The present invention relates to a centralized and networked protection system and method of regional distribution network, and belongs to the field of electrical system automation and relay protection. The protection system includes at least two centralized protection devices, an intelligent terminal and a communication network module, the centralized protection devices being communication with the intelligent terminal via the communication network module, the intelligent terminal being configured along with switching devices to distribute in each line section, for sampling data, backup protection and executing of tripping and closing commands, the centralized protection devices configured in the monitoring center of the regional distribution network, for generating differential protection elements based on the information sampled by the intelligent terminal and the topologic structure of the regional distribution network; and for determining the region where fault occurs and sending tripping and closing control commands.
Abstract translation: 本发明涉及集中式和网络化的区域配电网络保护系统及方法，属于电气系统自动化和继电保护领域。 保护系统包括至少两个集中保护装置，智能终端和通信网络模块，集中保护装置经由通信网络模块与智能终端通信，智能终端与开关装置一起配置，以分布在每条线路中 部分，采样数据，备用保护和执行脱扣指令，集中保护装置配置在区域分销网络的监控中心，根据智能终端采样信息和拓扑结构生成差分保护元件 区域分销网络; 并确定发生故障的区域并发送跳闸和关闭控制命令。
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