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1. 发明授权

US08901941B2 Instrument and method for detecting partial electrical discharges 有权
标题翻译：用于检测局部放电的仪器和方法
公开(公告)号：US08901941B2
公开(公告)日：2014-12-02
申请号：US13581753
申请日：2011-03-04
申请人： Stefano Serra , Gian Carlo Montanari , Fabiano Bettio
发明人： Stefano Serra , Gian Carlo Montanari , Fabiano Bettio
IPC分类号： G01R27/28 , G01R31/12
CPC分类号： G01R31/1227
摘要： An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broadband HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components representative of common mode electrical signals present in the measuring circuit.
摘要翻译：仪器（1）和部分放电检测方法涉及获取例如由直接测量阻抗装置（7）通过宽带HF采集通道（18）拾取的放电信号（10），并获取放电信号（10）在符合规定的窄带LF采集通道（180）中，在LF采集通道（180）上利用由宽带HF采集通道（18）的触发在从模式下控制的触发。它们还涉及通过第二窄带LF采集通道（180A）获取由间接测量阻抗设备（8）拾取的另一个放电信号（32），并且比较在第一和第二LF采集通道中产生的数字信号（34,34A）（180,180A），以便产生平衡数字信号（36），而不存在表示测量电路中存在的共模电信号的分量。

2. 发明授权

US08527221B2 Method and an apparatus for monitoring an activity of partial electrical discharges in an electrical apparatus powered with direct voltage 有权
标题翻译：用于监视由直流电驱动的电气设备中的部分放电活动的方法和装置
公开(公告)号：US08527221B2
公开(公告)日：2013-09-03
申请号：US12670081
申请日：2008-01-29
申请人： Gian Carlo Montanari , Andrea Cavallini , Gaetano Pasini
发明人： Gian Carlo Montanari , Andrea Cavallini , Gaetano Pasini
IPC分类号： G01R31/00 , A41F1/00 , A41F1/08 , A44B1/04 , A44B11/25 , A44B17/00 , B42F1/00 , B42F1/02
CPC分类号： G01R31/1272
摘要： A method for monitoring an activity of partial electrical discharges in an electric apparatus powered with direct voltage comprises the following steps, repeated in succession at predetermined time intervals: measuring (1) analogue electrical signals and generating corresponding digital signals representative of the wave form of partial discharge impulses; deriving (2) for each of said digital signals, at least one shape parameter and at least one amplitude parameter; separating (3) the set of the measured data into homogeneous sub-sets with respect to the shape parameter; correlating (4) the sub-sets of signals having similar values of the shape parameter and measured in successive steps; selecting (5) the correlated sub-sets for which the amplitude parameter has a predetermined profile over time and attributing the signals of said subsets to partial discharge activities. The methods currently in use do not allow to monitor partial discharge activities in an apparatus in DC, because they do not allow to distinguish the signals relating to the partial discharges from those relating to noise or to disturbances.
摘要翻译：用于监视由直流电驱动的电气设备中的部分放电的活动性的方法包括以下步骤，以预定的时间间隔连续重复：测量（1）模拟电信号并产生代表部分波形的相应数字信号放电脉冲为每个所述数字信号导出（2）至少一个形状参数和至少一个振幅参数; 将所述测量数据的集合相对于所述形状参数分离（3）为均匀子集; 将（4）具有相似的形状参数值并且在连续步骤中测量的信号子集合; 选择（5）随着时间的推移，幅度参数具有预定轮廓的相关子集，并将所述子集的信号归因于局部放电活动。目前使用的方法不允许在DC设备中监测局部放电活动，因为它们不允许将与部分放电有关的信号与与噪声或干扰有关的信号区分开。

3. 发明申请

US20120319703A1 INSTRUMENT AND METHOD FOR DETECTING PARTIAL ELECTRICAL DISCHARGES 有权
标题翻译：用于检测部分电气放电的仪器和方法
公开(公告)号：US20120319703A1
公开(公告)日：2012-12-20
申请号：US13581753
申请日：2011-03-04
申请人： Stefano Serra , Gian Carlo Montanari , Fabiano Bettio
发明人： Stefano Serra , Gian Carlo Montanari , Fabiano Bettio
IPC分类号： G01R27/28
CPC分类号： G01R31/1227
摘要： An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broad-band HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components represenative of common mode electrical signals present in the measuring circuit.
摘要翻译：仪器（1）和部分放电检测方法涉及获取例如由直接测量阻抗装置（7）通过宽带HF采集通道（18）拾取的放电信号（10），并获取放电信号（10）在符合规定的窄带LF采集通道（180）中，在LF采集通道（180）上利用宽带HF采集通道（18）的触发在从模式下控制触发。它们还涉及通过第二窄带LF采集通道（180A）获取由间接测量阻抗设备（8）拾取的另一个放电信号（32），并且比较在第一和第二LF采集通道中产生的数字信号（34,34A）（180,180A），以便产生平衡数字信号（36），而不考虑存在于测量电路中的共模电信号。

4. 发明申请

US20120215469A1 INSTRUMENT AND METHOD FOR MEASURING THE LOSS FACTOR OF AN ELECTRICAL APPARATUS 有权
标题翻译：用于测量电气设备损耗因子的仪器和方法
公开(公告)号：US20120215469A1
公开(公告)日：2012-08-23
申请号：US13504856
申请日：2010-10-27
申请人： Stefano Serra , Gian Carlo Montanari
发明人： Stefano Serra , Gian Carlo Montanari
IPC分类号： G06F19/00
CPC分类号： G01R27/2694 , G01R31/021 , G01R31/025
摘要： An instrument (1) for measuring the loss factor of an electrical apparatus (2) having an axially extending elongate geometry, in particular a medium voltage cable, comprises: at least a first and a second sensor (3A, 3B) connectable to the apparatus (2) in a first and a second measuring section (4A, 4B) axially spaced along the apparatus (2) by a predetermined quantity, respectively, and designed to measure respective values of the magnetic field generated outside the apparatus (2) by a load current flowing axially through the apparatus; a processing unit (5) designed to receive the magnetic field values measured by the sensors (3A, 3B) and programmed to derive from them a load loss value as a function of the difference between the measured magnetic field values.
摘要翻译：一种用于测量具有轴向延伸细长几何形状，特别是中压电缆的电气设备（2）的损耗因子的仪器（1）包括：至少一个可连接到该装置的第一和第二传感器（3A，3B）（2）分别沿着装置（2）轴向间隔预定量的第一和第二测量部分（4A，4B），并被设计成测量在装置（2）外产生的磁场的相应值负载电流轴向流过设备; 处理单元（5），被设计成接收由传感器（3A，3B）测量的磁场值，并被编程为从它们得出负载损耗值作为测量的磁场值之间的差的函数。

5. 发明申请

US20120022809A1 DEVICE AND METHOD FOR LOCATING PARTIAL DISCHARGES 有权
标题翻译：用于定位部分放电的装置和方法
公开(公告)号：US20120022809A1
公开(公告)日：2012-01-26
申请号：US13258335
申请日：2010-03-18
申请人： Stefano Serra , Andrea Cavallini , Gian Carlo Montanari , Gaetano Pasini
发明人： Stefano Serra , Andrea Cavallini , Gian Carlo Montanari , Gaetano Pasini
IPC分类号： G01R31/08 , G06F19/00
CPC分类号： G01R31/08 , G01R31/088 , G01R31/1272
摘要： A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps of detecting (11) the electric pulses (4) picked up by a first and a second sensor (5, 7), operatively connected to the apparatus (3) and spaced out along it, and generating corresponding electric signals representative of the waveform of the pulses (4), selecting (12) at least one pair of signals, detected in the consecutive sensors (5, 7), and representative of a pair of homologous pulses (4), relating to the same partial discharge and propagating in opposite directions along the apparatus, deriving, for the signals of the selected pair of homologous pulses (4), at least one attenuation parameter, correlated with a quantity that is variable depending on the distance travelled by the pulses (4), calculating (13) the distance between the discharge site (2) and the sensors, based on processing the values of the attenuation parameter for the signals of the selected pair of homologous pulses (4).
摘要翻译：一种用于定位在具有细长几何形状的电气设备（3）中的放电部位（2）处发生的局部放电的方法，并且产生沿着装置（3）从放电部位（2）沿相反方向传播的对应电脉冲（4），包括检测（11）由第一和第二传感器（5,7）拾取的电脉冲（4）的步骤，可操作地连接到装置（3）并沿其间隔开，并产生代表脉冲（4）的波形，选择（12）在连续传感器（5,7）中检测到的至少一对信号，并代表一对同源脉冲（4），涉及相同的局部放电和传播沿着装置的相反方向，导出所选择的同步脉冲对（4）的信号，至少一个与根据脉冲（4）行进的距离可变的量相关的衰减参数，计算（13）基于对所选择的同源脉冲（4）的信号的衰减参数的值进行处理，排出部位（2）和传感器之间的距离。

6. 发明授权

US08055459B2 Instrument and method for measuring partial electrical discharges in an electrical system 有权
标题翻译：用于测量电气系统中部分放电的仪器和方法
公开(公告)号：US08055459B2
公开(公告)日：2011-11-08
申请号：US12304410
申请日：2007-04-11
申请人： Gian Carlo Montanari , Gaetano Pasini , Fabiano Bettio , Andrea Cavallini , Francesco Puletti , Dario Andreani
发明人： Gian Carlo Montanari , Gaetano Pasini , Fabiano Bettio , Andrea Cavallini , Francesco Puletti , Dario Andreani
IPC分类号： G01R29/00 , G01R31/00 , G06F19/00 , G06F17/40
CPC分类号： G01R31/1227 , G01R19/2513
摘要： An instrument (1) and a method for measuring pulses of partial electrical discharges in an electrical system comprise data processing means (5) operatively associated both with an input stage (2), able to receive an analogue signal (3) representing said pulses and to provide a digital representation of the entire wave form of the pulses, to receive said digital representation, extract the value of predetermined parameters relating to the wave form of the pulses and transfer to and output stage (4) a processed digital signal comprising said values, the processing means (5) being able to operate substantially in real time, i.e. with no need for a memory for the intermediate storage of the data. Known solutions within the field of the measurement of partial discharge pulses for diagnostic purposes provide for the use of peak detector instruments, which are not able to measure all information useful for a diagnosis of the electrical system, and oscilloscopes interacting with a computer, disadvantageous in terms of costs and of calculation efficiency.
摘要翻译：仪器（1）和用于测量电气系统中的部分放电脉冲的方法包括可操作地与输入级（2）相关联的数据处理装置（5），能够接收表示所述脉冲的模拟信号（3）为了提供脉冲的整个波形形式的数字表示，以接收所述数字表示，提取与脉冲波形有关的预定参数的值，并传送到并输出级（4）包括所述值的经处理的数字信号，处理装置（5）能够基本上实时地操作，即不需要用于数据的中间存储的存储器。在用于诊断目的的局部放电脉冲测量领域内的已知解决方案提供使用峰值检测器仪器，其不能测量用于诊断电气系统的所有信息，以及与计算机相互作用的示波器，不利地成本条件和计算效率。

7. 发明授权

US08762081B2 Device and method for locating partial discharges 有权
标题翻译：用于定位局部放电的装置和方法
公开(公告)号：US08762081B2
公开(公告)日：2014-06-24
申请号：US13258335
申请日：2010-03-18
申请人： Stefano Serra , Andrea Cavallini , Gian Carlo Montanari , Gaetano Pasini
发明人： Stefano Serra , Andrea Cavallini , Gian Carlo Montanari , Gaetano Pasini
IPC分类号： G01R31/00 , G01R31/08 , G01R31/28
CPC分类号： G01R31/08 , G01R31/088 , G01R31/1272
摘要： A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps of detecting (11) the electric pulses (4) picked up by a first and a second sensor (5, 7), operatively connected to the apparatus (3) and spaced out along it, and generating corresponding electric signals representative of the waveform of the pulses (4), selecting (12) at least one pair of signals, detected in the consecutive sensors (5, 7), and representative of a pair of homologous pulses (4), relating to the same partial discharge and propagating in opposite directions along the apparatus, deriving, for the signals of the selected pair of homologous pulses (4), at least one attenuation parameter, correlated with a quantity that is variable depending on the distance travelled by the pulses (4), calculating (13) the distance between the discharge site (2) and the sensors, based on processing the values of the attenuation parameter for the signals of the selected pair of homologous pulses (4).
摘要翻译：一种用于定位在具有细长几何形状的电气设备（3）中的放电部位（2）处发生的局部放电的方法，并且产生沿着装置（3）从放电部位（2）沿相反方向传播的对应电脉冲（4），包括检测（11）由第一和第二传感器（5,7）拾取的电脉冲（4）的步骤，可操作地连接到装置（3）并沿其间隔开，并产生代表脉冲（4）的波形，选择（12）在连续传感器（5,7）中检测到的至少一对信号，并代表一对同源脉冲（4），涉及相同的局部放电和传播沿着装置的相反方向，导出所选择的同步脉冲对（4）的信号，至少一个与根据脉冲（4）行进的距离可变的量相关的衰减参数，计算（13）基于对所选择的同源脉冲（4）的信号的衰减参数的值进行处理，排出部位（2）和传感器之间的距离。

8. 发明授权

US08616045B2 Method and device for deriving the concentration of a gas dissolved in an electrical insulation oil 失效
标题翻译：导出溶解在电绝缘油中的气体浓度的方法和装置
公开(公告)号：US08616045B2
公开(公告)日：2013-12-31
申请号：US13521271
申请日：2011-01-10
申请人： Andrea Cavallini , Fabio Ciani , Stefano Serra , GianCarlo Montanari
发明人： Andrea Cavallini , Fabio Ciani , Stefano Serra , GianCarlo Montanari
IPC分类号： G01N33/30 , G01N33/26
CPC分类号： G01N33/2841
摘要： A method for deriving the concentration of a gas dissolved in an electrical insulating oil (2) comprises the following steps:—preparing a membrane (5) permeable to the gas, interposed between a container (7) of the oil (2) and a measuring chamber (4) that receives a part of the gas through the membrane (5);—measuring the value of gas concentration in the measuring chamber (4);—deriving an estimated value of the concentration of the gas in the oil (2) as a function of the measured value,—the measuring step comprising taking at successive measuring instants a plurality of measurements of the values of gas concentration in the measuring chamber (4);—the deriving step comprising calculating the estimated value of gas concentration in the oil (2), at an instant selected from said measuring instants, according to a non-linear function of the values measured at the selected measuring instant and at one or more of the measuring instants preceding the one selected.
摘要翻译：用于获得溶解在电绝缘油（2）中的气体浓度的方法包括以下步骤：制备介于油（2）的容器（7）和介于油（2）的容器（7）之间的可渗透气体的膜（5）测量室（4），其接收通过所述膜（5）的气体的一部分; - 测量所述测量室（4）中的气体浓度的值; - 导出所述油中的气体的浓度的估计值（2 ），所述测量步骤包括在连续的测量时刻对所述测量室（4）中的气体浓度的值进行多次测量; - 所述导出步骤包括计算所述测量室（4）中的气体浓度的估计值根据在所选择的测量时刻测量的值和在所选择的测量时刻之前的一个或多个测量时刻的非线性函数，在从所述测量时刻选择的瞬间，油（2）。

9. 发明申请

US20120209572A1 DEVICE AND METHOD FOR DETECTING AND PROCESSING SIGNALS RELATING TO PARTIAL ELECTRICAL DISCHARGES 有权
标题翻译：用于检测和处理与部分电力放电有关的信号的装置和方法
公开(公告)号：US20120209572A1
公开(公告)日：2012-08-16
申请号：US13503949
申请日：2010-10-29
申请人： Andrea Cavallini , Davide Fabiani , Gian Carlo Montanari
发明人： Andrea Cavallini , Davide Fabiani , Gian Carlo Montanari
IPC分类号： G06F15/00
CPC分类号： G01R31/14 , G01R15/142 , G01R31/12
摘要： A device (1) for detecting and processing signals relating to partial electrical discharges in an electrical apparatus (2) powered by a square-wave (3) voltage modulated by a modulating wave (4) in such a way as to form an alternating voltage of predetermined frequency, comprises: a sensor (5) connectable to the apparatus (2) for detecting a discharge signal (6) representing the electrical pulses generated by the partial discharges; a processing unit (7) connected to the sensor (5) to receive the discharge signal (6) and derive the detection instants of each of the pulses detected with respect to a predetermined time reference, a synchronization module (8) designed to receive an electrical signal (9) representing the power supply voltage and equipped with a filter (10) configured for extracting from said power supply signal (9) a signal (11) representing the modulating wave (4), the processing unit (7) being configured for associating with the pulses detected the values of a phase parameter (f) representing the phase of the modulating wave (4) at the pulse detection instants.
摘要翻译：一种用于检测和处理由由调制波（4）调制的方波（3）电压供电的电气设备（2）中与部分放电有关的信号的装置（1），以便形成交流电压包括：可连接到所述装置（2）的传感器（5），用于检测表示由所述局部放电产生的电脉冲的放电信号（6）; 连接到传感器（5）以接收放电信号（6）并导出相对于预定时间基准检测到的每个脉冲的检测时刻的处理单元（7），设计成接收表示电源电压的电信号（9），并配备有用于从所述电源信号（9）提取表示调制波（4）的信号（11）的滤波器（10），所述处理单元（7）被配置用于与所检测到的脉冲相关联的脉冲检测时刻的表示调制波（4）的相位的相位参数（f）的值。

10. 发明授权

US08447540B2 Method for detecting, identifying and locating partial discharges occurring in a discharge site along an electric apparatus 有权
标题翻译：用于检测，识别和定位沿着电气设备在排放部位发生的局部放电的方法
公开(公告)号：US08447540B2
公开(公告)日：2013-05-21
申请号：US12670064
申请日：2008-01-31
申请人： Gian Carlo Montanari , Andrea Cavallini , Gaetano Pasini
发明人： Gian Carlo Montanari , Andrea Cavallini , Gaetano Pasini
IPC分类号： G01R31/00
CPC分类号： G01R31/1272
摘要： A method for detecting, identifying and locating partial discharges occurring in a discharge site along an electric apparatus comprises the following steps: detecting (1) electrical signals in a detection station; attributing (2) to each detected signal a value of a phase parameter; deriving (3) for each signal at least one shape parameter and one amplitude parameter; separating (4) the set of signals detected into sub sets that are homogeneous relative to the shape parameter; identifying (5) sub-sets related to partial discharges and cataloguing them; repeating the above steps in a plurality of detection stations positioned along the apparatus; correlating (7) the sub-sets of signals detected in different detection stations and catalogued similarly; selecting (8) as a function of the amplitude and shape parameters of a sub-set among the correlated ones and locating (9) the partial discharges related to said sub-sets at the detection station of the selected sub-set. Known methods have poor effectiveness and/or reliability, especially for cables whose length exceeds 1-2 km or, alternatively, they require an excessively complex and costly field implementation.
摘要翻译：一种用于检测，识别和定位沿着电气设备的排放位置发生的局部放电的方法，包括以下步骤：检测（1）检测站中的电信号; 将每个检测到的信号归因于（2）相位参数的值; 为每个信号导出（3）至少一个形状参数和一个幅度参数; 将（4）检测到的信号集合相对于形状参数是均匀的; 识别（5）与部分放电相关的子集并对其进行编目; 在沿着设备定位的多个检测站中重复上述步骤; 关联（7）在不同检测站中检测到的信号子集，并类似地编目; 根据相关的子集中的子集的幅度和形状参数来选择（8）并定位（9）与所选子集的检测站处的所述子集相关的局部放电。已知方法的有效性和/或可靠性差，特别是对于长度超过1-2公里的电缆，或者它们需要过于复杂和昂贵的现场实施。

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