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1. 发明申请

WO2013185521A1 一种基于全分量差动系数矩阵的特高压交流输电线路保护方法审中-公开
公开(公告)号：WO2013185521A1
公开(公告)日：2013-12-19
申请号：PCT/CN2013/075581
申请日：2013-05-14
申请人：国家电网公司 , 福建省电力有限公司 , 福建省电力有限公司检修分公司 , 福建省电力有限公司莆田电业局
发明人：林富洪 , 曾惠敏
IPC分类号： H02H7/26
CPC分类号： H02H3/307 , H02H7/226
摘要：一种基于全分量差动系数矩阵的特高压交流输电线路保护方法，其包括：测量特高压交流输电线路两端的基频电气量；利用长线方程，由线路一端正、负、零序电流量计算另一端的正、负、零序电流量；利用对称分量法计算另一端的基频电流量；计算差动系数矩阵；利用差动系数矩阵各元素间的大小关系判别故障类型，保护正确跳开故障相。该方法适用于特高压交流输电线路整个故障过程保护，尤其当特高压交流输电线路发生单相经高电阻接地短路故障时，该方法能准确识别并正确跳开故障相，其余两正常相线路两端断路器可靠不动作。

2. 发明申请

WO2007086944A3 SYSTEM, APPARATUS AND METHOD FOR COMPENSATING THE SENSITIVITY OF A SEQUENCE ELEMENT IN A LINE CURRENT DIFFERENTIAL RELAY IN A POWER SYSTEM 审中-公开
标题翻译：用于补偿电力系统中线电流差分继电器中序列元件的灵敏度的系统，装置和方法
公开(公告)号：WO2007086944A3
公开(公告)日：2009-03-19
申请号：PCT/US2006035175
申请日：2006-09-08
申请人： SCHWEITZER ENGINEERING LAB INC
发明人： MOONEY JOSEPH B , BENMOUYAL GABRIEL
IPC分类号： H02H3/00
CPC分类号： H02H3/283 , H02H3/307 , H02H7/263
摘要： An apparatus and method compensate for the sensitivity of at least one line current differential element of a first current differential relay providing differential protection for a transmission line of a power system during a single- phase pole-open condition. The apparatus includes a first delta filter configured to remove a first pre-fault current from a first fault current of the transmission line to derive a compensated first current phasor. The apparatus also includes a second delta filter configured to remove a second pre-fault current from a second fault current of the transmission line to derive a compensated second current phasor. The compensated first and second current phasors are provided to the at least one line current differential element to compensate the sensitivity of the at least one line current differential element.
摘要翻译：一种装置和方法补偿在单相极点打开状态期间为电力系统的传输线提供差分保护的第一电流差动继电器的至少一个线路电流差分元件的灵敏度。该装置包括第一增量滤波器，其被配置为从传输线的第一故障电流去除第一预故障电流以导出补偿的第一电流相量。该装置还包括第二增量滤波器，其被配置为从传输线的第二故障电流去除第二预故障电流以导出补偿的第二电流相量。补偿的第一和第二电流相量被提供给至少一个线路电流差动元件以补偿至少一个线路电流差动元件的灵敏度。

3. 发明申请

WO0233426A9 LINE DIFFERENTIAL PROTECTION SYSTEM FOR A POWER TRANSMISSION LINE 审中-公开
标题翻译：电力传输线路差分保护系统
公开(公告)号：WO0233426A9
公开(公告)日：2003-12-11
申请号：PCT/US0132261
申请日：2001-10-15
申请人： SCHWEITZER ENGINEERING LAB INC
发明人： ROBERTS JEFFREY B , BENMOUYAL GABRIEL , ALTUVE-FERRER HECTOR , FOLKERS RALPH , TZIOUVARAS DEMETRIOS
IPC分类号： H02H3/30 , G01R29/16
CPC分类号： H02H3/30 , H02H3/307
摘要： In a power line current differential protection system, all three phase current values (IA, IB, and IC) are obtained from both the local end and the remote end of a power transmission line (12). The magnitude of the ratio of the remote current values to the local current values are calculated. Also, the angle difference between the local and the remote current values for each phase are calculated. Comparison elements (40, 42) then compare the ratio and angle values against preselected values which establish a restrain region in the current ratio plane. Current values which result in the ratio being within the region do not result in a tripping signal for the circuit breaker on the power transmission line (12), while current values which result in a ratio outside of the region result in a tripping of the circuit breaker. Similar circuitry is used for negative sequence current quantities, with the negative sequence preselected values being set substantially lower to produce a more sensitive response to possible faults in the line.
摘要翻译：在电力线电流差动保护系统中，从输电线路（12）的本端和远端获得所有三相电流值（IA，IB和IC）。计算远程电流值与局部电流值的比值的大小。此外，计算每个相位的本地和远程电流值之间的角度差。比较元件（40,42）然后将比值和角度值与在当前比例平面中建立约束区域的预选值进行比较。导致比率在该区域内的电流值不会导致电力传输线路（12）上的断路器的跳闸信号，而导致该区域之外的比率的电流值导致电路跳闸断路器。类似的电路用于负序电流量，其中负序预选值被设定为低得多，以对该线路中的可能故障产生更敏感的响应。

4. 发明申请

WO2014190814A1 电流源型变流器差动保护方法及继电保护装置审中-公开
公开(公告)号：WO2014190814A1
公开(公告)日：2014-12-04
申请号：PCT/CN2014/075267
申请日：2014-04-14
申请人：南京南瑞继保电气有限公司 , 南京南瑞继保工程技术有限公司
发明人：张琪雪 , 陈俊 , 闫伟 , 石祥建 , 严伟 , 刘为群 , 沈全荣
IPC分类号： H02H7/26
CPC分类号： H02M1/32 , H02H3/305 , H02H3/307 , H02H7/1216 , H02M7/04
摘要：本发明实施例公开了一种电流源型变流器差动保护方法，继电保护装置对被保护的电流源型变流器两侧的电流互感器二次侧电流进行采样，得到进线侧三相电流，和出线侧三相电流；对所述进线侧三相电流和所述出线侧三相电流进行整流，得到等效的进线侧输入电流和出线侧输出电流；按两侧电流互感器电流变比折算所述进线侧输入电流和所述出线侧输出电流，获取暂态差动电流和暂态制动电流；根据所述暂态差动电流和所述暂态制动电流获取差动电流和制动电流；根据所述差动电流和制动电流实现差动保护。本发明实施例还相应地公开了一种继电保护装置。

5. 发明申请

WO2013143469A1 具有相线间小电流故障保护的漏电保护断路器审中-公开
公开(公告)号：WO2013143469A1
公开(公告)日：2013-10-03
申请号：PCT/CN2013/073320
申请日：2013-03-28
申请人：施耐德电器工业公司 , 许柱峰 , 杨武
发明人：许柱峰
IPC分类号： H02H3/32
CPC分类号： H02H3/28 , H02H3/307
摘要：一种漏电保护断路器，包括相间漏电流保护部件，相间漏电流保护部件包括：第一电流互感器（CT1），包含匝数为N1的第一线圈（CT1-N1）、匝数为N3的第三线圈（CT1-N3）以及用于驱动的匝数为N5的第五线圈（CT1-N5），该第一线圈串联连接在第一相线（L1）的输入端处；第二电流互感器（CT2），包含匝数为N2的第二线圈（CT2-N2）以及匝数为N4的第四线圈（CT2-N4），该第二线圈串联连接在第一相线（L1）中的接近负载的位置处；保护继电器（RLY），基于第五线圈（CT1-N5）的电流而动作，断开各个相线（L1、L2）的连接；其中，第一电流互感器（CT1）的第三线圈（CT1-N3）与第二电流互感器（CT2）的第四线圈（CT2-N4）串联成闭合回路，其中，N1=N2，N3=N4。

6. 发明申请

WO2011060814A1 FUZZY INTERFERENCE RELAY AND METHOD FOR CURRENT DIFFERENTIAL PROTECTION OF A TRANSMISSION LINE 审中-公开
标题翻译：用于传输线电流差动保护的FUZZY干扰继电器和方法
公开(公告)号：WO2011060814A1
公开(公告)日：2011-05-26
申请号：PCT/EP2009/065340
申请日：2009-11-17
申请人： AREVA T&D UK LIMITED , REBIZANT, Waldemar , SOLAK, Krzysztof , WISZNIEWSKI, Andrzej , KLIMEK, Andrzej
发明人： REBIZANT, Waldemar , SOLAK, Krzysztof , WISZNIEWSKI, Andrzej , KLIMEK, Andrzej
IPC分类号： H02H3/30 , H02H3/28
CPC分类号： H02H3/307 , H02H3/283
摘要： A relay (100) for current differential protection of a transmission line, comprising: a first calculator (110) of symmetrical sequence components of currents of each phase of the transmission line at local and remote ends of the transmission line; a second calculator (110) of phase differences φ 12 and φ 012 between combinations currents i 12 and i 012 of the symmetrical sequence currents; a fuzzy inference system (112) which outputs a variable y whose value is calculated according to the values of the phase differences φ 12 and φ 012 ; a third calculator (120) which outputs a tripping signal for the control of a circuit breaker arranged on the transmission line and associated with the relay, the value of the tripping signal being calculated according to the values of the variable y and the values of the currents of each phase at the local and remote ends of the protected transmission line.
摘要翻译：一种用于传输线路的电流差动保护的继电器（100），包括：在传输线的本地和远端的传输线的每相的电流的对称序列分量的第一计算器（110）对称序列电流的组合电流i12和i012之间的相位差f12和f012的第二计算器（110）; 模糊推理系统（112），其输出根据相位差f12和f012的值计算其值的变量y; 第三计算器（120），其输出用于控制布置在传输线上并与继电器相关联的断路器的跳闸信号，跳闸信号的值根据变量y的值和受保护传输线的本地和远端各相的电流。

7. 发明申请

WO2007086944A2 SYSTEM, APPARATUS AND METHOD FOR COMPENSATING THE SENSITIVITY OF A SEQUENCE ELEMENT IN A LINE CURRENT DIFFERENTIAL RELAY IN A POWER SYSTEM 审中-公开
标题翻译：用于补偿电力系统中线电流差分继电器中序列元件的灵敏度的系统，装置和方法
公开(公告)号：WO2007086944A2
公开(公告)日：2007-08-02
申请号：PCT/US2006/035175
申请日：2006-09-08
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： MOONEY, Joseph, B. , BENMOUYAL, Gabriel
IPC分类号： H02H3/00
CPC分类号： H02H3/283 , H02H3/307 , H02H7/263
摘要： An apparatus and method compensate for the sensitivity of at least one line current differential element of a first current differential relay providing differential protection for a transmission line of a power system during a single- phase pole-open condition. The apparatus includes a first delta filter configured to remove a first pre-fault current from a first fault current of the transmission line to derive a compensated first current phasor. The apparatus also includes a second delta filter configured to remove a second pre-fault current from a second fault current of the transmission line to derive a compensated second current phasor. The compensated first and second current phasors are provided to the at least one line current differential element to compensate the sensitivity of the at least one line current differential element.
摘要翻译：一种装置和方法补偿在单相极点打开状态期间为电力系统的传输线提供差分保护的第一电流差动继电器的至少一个线路电流差分元件的灵敏度。该装置包括第一增量滤波器，其被配置为从传输线的第一故障电流去除第一预故障电流以导出补偿的第一电流相量。该装置还包括第二增量滤波器，其被配置为从传输线的第二故障电流去除第二预故障电流以导出补偿的第二电流相量。补偿的第一和第二电流相量被提供给至少一个线路电流差动元件以补偿至少一个线路电流差动元件的灵敏度。

8. 发明申请

WO02033426A1 LINE DIFFERENTIAL PROTECTION SYSTEM FOR A POWER TRANSMISSION LINE 审中-公开
标题翻译：电力传输线路差分保护系统
公开(公告)号：WO02033426A1
公开(公告)日：2002-04-25
申请号：PCT/US2001/032261
申请日：2001-10-15
IPC分类号： H02H3/30 , G01R29/16
CPC分类号： H02H3/30 , H02H3/307
摘要： In a power line current differential protection system, all three phase current values (IA, IB, and IC) are obtained from both the local end and the remote end of a power transmission line (12). The magnitude of the ratio of the remote current values to the local current values are calculated. Also, the angle difference between the local and the remote current values for each phase are calculated. Comparison elements (40, 42) then compare the ratio and angle values against preselected values which establish a restrain region in the current ratio plane. Current values which result in the ratio being within the region do not result in a tripping signal for the circuit breaker on the power transmission line (12), while current values which result in a ratio outside of the region result in a tripping of the circuit breaker. Similar circuitry is used for negative sequence current quantities, with the negative sequence preselected values being set substantially lower to produce a more sensitive response to possible faults in the line.
摘要翻译：在电力线电流差动保护系统中，从输电线路（12）的本端和远端获得所有三相电流值（IA，IB和IC）。计算远程电流值与局部电流值的比值的大小。此外，计算每个相位的本地和远程电流值之间的角度差。比较元件（40,42）然后将比值和角度值与在当前比例平面中建立约束区域的预选值进行比较。导致比率在该区域内的电流值不会导致电力传输线路（12）上的断路器的跳闸信号，而导致该区域之外的比率的电流值导致电路跳闸断路器。类似的电路用于负序电流量，其中负序预选值被设定为低得多，以对该线路中的可能故障产生更敏感的响应。

9. 发明申请

WO2011038757A1 METHOD OF HIGH IMPEDANCE GROUNDFAULT DETECTION FOR DIFFERENTIAL PROTECTION OF OVERHEAD TRANSMISSION LINES 审中-公开
标题翻译：高阻抗地基传感器差分保护方法
公开(公告)号：WO2011038757A1
公开(公告)日：2011-04-07
申请号：PCT/EP2009/062669
申请日：2009-09-30
申请人： AREVA T&D UK LIMITED , WISZNIEWSKI, Andrzej , LUKOWICZ, Miroslaw , MICHALIK, Marek , KLIMEK, Andrzej
发明人： WISZNIEWSKI, Andrzej , LUKOWICZ, Miroslaw , MICHALIK, Marek , KLIMEK, Andrzej
IPC分类号： H02H3/30 , H02H3/40
CPC分类号： H02H3/307 , H02H3/402
摘要： The invention concerns a method of impedance groundfault detection for differential protection of an overhead transmission line in a three-phase high voltage electric power transmission system which comprises many lines (1,12) and many protection relays (2,4), which comprises the following steps : 1) in prefault condition : - measuring the differential current (I); - measuring the phase voltage (II) at the relay location; - measuring the phase current (III) the relay location; - calculating the differential admittance (IV), with the following equation : (formula (V)). With (VI) : the positive sequence impedance of the line-protected. 2) In operating condition : - measuring the differential current (VII); - measuring the phase voltage (VIII) at the relay location; - measuring the phase current (IX) at the relay location; calculating the differential admittance (X), with the following equation : (formula (XI)); - detecting a high impedance groundfault detection, if the following formula is verified : (XII) with (XIII); B 0 = the total line admittance.
摘要翻译：本发明涉及一种用于三相高压电力传输系统中架空输电线路的差动保护的阻抗接地故障检测方法，该系统包括许多线路（1,12）和许多保护继电器（2,4），其包括以下步骤：1）在预失电状态下： - 测量差动电流（I）; - 测量继电器位置的相电压（II）; - 测量相电流（III）继电器位置; - 通过以下等式计算差分导纳（IV）：（公式（V））。带（VI）：线路保护的正序阻抗。 2）运行状态： - 测量差动电流（VII）; - 测量继电器位置的相电压（VIII）; - 在继电器位置测量相电流（IX）; 用下式计算差分导纳（X）：（式（XI））; - 检测高阻抗接地故障检测，如果下列公式被验证：（XII）与（XIII）; B0 =总线路导纳。

10. 发明申请

WO03003026A3 LINE DIFFERENTIAL PROTECTION SYSTEM FOR A POWER TRANSMISSION LINE 审中-公开
标题翻译：输电线路线路差动保护系统
公开(公告)号：WO03003026A3
公开(公告)日：2003-03-20
申请号：PCT/US0220855
申请日：2002-07-01
申请人： SCHWEITZER ENGINEERING LAB INC
发明人： ROBERTS JEFFREY B
IPC分类号： H02H3/30 , G01R31/08 , G01R31/00 , H02H3/18
CPC分类号： H02H3/30 , H02H3/307
摘要： In a three terminal (200, 202, 204) power line current differential protection system, all three phase current values are obtained from all three terminals. The current values for each phase are processed in three successive processing operations, using in turn the current values from each terminal as local current values and the combination of the other two terminal current values in each case as the remote current values. The resulting local and remote current values are then processed against preselected values, which establish a restrain region in the current ratio "alpha" plane. Current values for each set of local and combined remote currents which result in the ratio being within the restrain region (30) result in a blocking signal while current values, which result in a ratio outside of the region result in a tripping signal. If the outputs of the three processing operations agree, then that signal is the system output. If there is disagreement, the output produced when the terminal having the largest current value is the local current is the system output.
摘要翻译：在三端（200,202,204）电力线电流差动保护系统中，所有三相电流值均从三个端子获得。在三个连续的处理操作中处理每个阶段的电流值，依次使用来自每个端子的电流值作为本地电流值，并且将其他两个端子电流值的组合分别作为远程电流值。然后对照预先选定的值处理所得到的局部和远程电流值，这些值在当前比率“α”平面中建立一个约束区域。导致该比率在约束区域（30）内的每组局部和组合的远程电流的当前值导致阻塞信号，而导致该区域之外的比率的电流值导致跳闸信号。如果三个处理操作的输出一致，则该信号是系统输出。如果不一致，则当具有最大电流值的终端是本地电流时产生的输出是系统输出。

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