CN106842012A - A kind of separate decision method of live detection - Google Patents
A kind of separate decision method of live detection Download PDFInfo
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Abstract
本申请涉及电气设备缺陷检测技术领域，具体涉及一种带电检测相别判定方法。由于断路器分闸动作难以区分三相中首动作相，因此难以实现断路器内部触头烧蚀程度的相别判定。同时由于使用天线检测断路器动作的电磁波信号时，三相动作脉冲相邻时间极短，给断路器内部触头烧蚀的相别判定增加了难度。本申请提供一种带电检测相别判定方法，包括以下步骤：利用故障录波装置检测断路器分闸时若干周波的电流数据；利用天线检测断路器分闸时辐射的电磁波信号；结合电流数据与电磁波信号，判定与电磁波信号对应的相别。本申请结合辐射电磁波检测手段与故障录波技术，以实现简洁、高效、准确地对带电检测相别进行判定。
The present application relates to the technical field of electrical equipment defect detection, and in particular to a live detection method for phase distinction determination. Since the opening action of the circuit breaker is difficult to distinguish the first action phase among the three phases, it is difficult to realize the phase-specific judgment of the degree of ablation of the internal contacts of the circuit breaker. At the same time, when the antenna is used to detect the electromagnetic wave signal of the circuit breaker action, the adjacent time of the three-phase action pulses is extremely short, which increases the difficulty of determining the phase difference of the internal contact ablation of the circuit breaker. The application provides a live detection phase difference judgment method, which includes the following steps: using a fault recording device to detect the current data of several cycles when the circuit breaker is opened; using an antenna to detect the electromagnetic wave signal radiated when the circuit breaker is opened; combining the current data and The electromagnetic wave signal is used to determine the phase difference corresponding to the electromagnetic wave signal. This application combines radiation electromagnetic wave detection means and fault recording technology to realize simple, efficient and accurate determination of liveness detection phase difference.
Description
技术领域technical field
本申请涉及电气设备缺陷检测技术领域，具体涉及一种带电检测相别判定方法。The present application relates to the technical field of defect detection of electrical equipment, and in particular to a phase-specific determination method for electrification detection.
背景技术Background technique
断路器作为电力系统的重要组成成分，不仅可以切断或闭合高压电路中的空载电流和负荷电流，而且当系统发生故障时可以通过继电器保护装置，切断过负荷电流和短路电流，具有相当完善的灭弧结构和足够的断流能力。随着断路器开断次数的增加，断路器内部触头烧蚀程度也不断变得严重，一旦发生故障将导致部分甚至整个电力系统的瘫痪，造成不可估量的损失。断路器动作过程会在空间中激发出电磁波信号，该信号可有效反应断路器内部触头的烧蚀情况，用于检测诊断断路器内部触头烧蚀程度。As an important component of the power system, the circuit breaker can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the relay protection device when the system fails. Arc extinguishing structure and sufficient breaking capacity. With the increase of the breaking times of the circuit breaker, the ablation degree of the internal contacts of the circuit breaker is also becoming more and more serious. Once a fault occurs, it will lead to the paralysis of part or even the entire power system, causing immeasurable losses. The action process of the circuit breaker will excite electromagnetic wave signals in the space, which can effectively reflect the ablation of the internal contacts of the circuit breaker, and can be used to detect and diagnose the degree of ablation of the internal contacts of the circuit breaker.
在实际工程应用中，电力系统中三相同时发生故障的情况比较少，大多数是单相故障，即单相断路器触头的烧蚀程度比较严重。由于断路器分闸动作难以区分三相中首动作相，因此难以实现断路器内部触头烧蚀程度的相别判定。同时由于使用天线检测断路器动作的电磁波信号时，三相动作脉冲相邻时间极短，给断路器内部触头烧蚀的相别判定增加了难度。In practical engineering applications, the simultaneous failure of three phases in the power system is relatively rare, and most of them are single-phase faults, that is, the ablation degree of single-phase circuit breaker contacts is relatively serious. Since the opening action of the circuit breaker is difficult to distinguish the first action phase among the three phases, it is difficult to realize the phase-specific judgment of the degree of ablation of the internal contacts of the circuit breaker. At the same time, when the antenna is used to detect the electromagnetic wave signal of the circuit breaker action, the adjacent time of the three-phase action pulse is extremely short, which increases the difficulty of determining the phase difference of the internal contact ablation of the circuit breaker.
发明内容Contents of the invention
本发明的目的是为了解决上述单相断路器内部触头烧蚀程度的相别判定的问题。The purpose of the present invention is to solve the above-mentioned problem of different determination of the ablation degree of the internal contacts of the single-phase circuit breaker.
为此，本发明实施例提供了如下技术方案：一种带电检测相别判定方法，所述判定方法包括以下步骤：To this end, the embodiment of the present invention provides the following technical solution: a method for judging the phase difference of charged detection, the judging method includes the following steps:
S1利用故障录波装置检测断路器分闸时若干周波的电流数据；S1 uses the fault recorder to detect the current data of several cycles when the circuit breaker is opened;
S2利用天线检测断路器分闸时辐射的电磁波信号；S2 uses the antenna to detect the electromagnetic wave signal radiated when the circuit breaker is opened;
S3结合电流数据与电磁波信号，判定与电磁波信号对应的相别。S3 combines the current data and the electromagnetic wave signal to determine the phase difference corresponding to the electromagnetic wave signal.
可选地，所述S1中的电流数据形成录波电流波形，所述录波电流波形与断路器分闸时的三相电相对应。Optionally, the current data in S1 forms a recorded wave current waveform, and the recorded wave current waveform corresponds to the three-phase electricity when the circuit breaker is opened.
可选地，所述S2中的电磁波信号与断路器内部触头的烧蚀程度相对应。Optionally, the electromagnetic wave signal in S2 corresponds to the ablation degree of the internal contacts of the circuit breaker.
可选地，所述录波电流波形过零点的时间顺序与三相电电磁波形的相序对应。Optionally, the time sequence of the zero-crossing points of the recording current waveform corresponds to the phase sequence of the three-phase electric and electromagnetic waveform.
可选地，所述判定方法还包括断路器相别烧蚀程度的带电判定。Optionally, the judging method further includes electrification judging of the degree of ablation of the circuit breaker.
本发明实施例提供的技术方案包括以下有益效果：本申请针对实际工程中断路器多为单相故障的现状，以及电磁波信号可反映断路器内部触头烧蚀程度的原理，将两种技术相结合提出了一种断路器烧蚀程度带电检测相别判定方法。在断路器开闸时，通过观察故障录波装置采集的电流波形和天线接收的辐射电磁波波形，根据电流波形过零点的时间顺序来判断三相电磁波形的相序，再根据故障特征量来判定缺陷相。本申请结合辐射电磁波检测手段与故障录波技术，以实现简洁、高效、准确地对带电检测相别进行判定。The technical solutions provided by the embodiments of the present invention include the following beneficial effects: This application aims at the current situation that circuit breakers in actual engineering are mostly single-phase faults, and the principle that electromagnetic wave signals can reflect the degree of ablation of internal contacts of circuit breakers. Combined with this, a method for judging the phase difference of the live detection of the ablation degree of the circuit breaker is proposed. When the circuit breaker is opened, by observing the current waveform collected by the fault recording device and the radiated electromagnetic wave waveform received by the antenna, the phase sequence of the three-phase electromagnetic waveform is judged according to the time sequence of the zero crossing point of the current waveform, and then judged according to the fault characteristic quantity defect phase. This application combines radiation electromagnetic wave detection means and fault recording technology to realize simple, efficient and accurate determination of liveness detection phase difference.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without paying creative labor Below, other drawings can also be obtained from these drawings.
图1为本发明实施例提供的一种带电检测相别判定方法的判定流程示意图；Fig. 1 is a schematic diagram of a judgment flow chart of a charging detection phase distinction judgment method provided by an embodiment of the present invention;
图2为本发明实施例提供的故障录波电流波形示意图；2 is a schematic diagram of a fault recording current waveform provided by an embodiment of the present invention;
图3为本发明实施例提供的天线检测电磁波信号示意图。FIG. 3 is a schematic diagram of an antenna detecting an electromagnetic wave signal according to an embodiment of the present invention.
具体实施方式detailed description
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明实施例，并与说明书一起用于解释本发明的原理。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.
实施例一Embodiment one
参见图1～3，为本发明实施例提供的一种带电检测相别判定方法，所述判定方法包括以下步骤：Referring to Figures 1 to 3, it is a live detection phase identification method provided by an embodiment of the present invention. The determination method includes the following steps:
S1利用故障录波装置检测断路器分闸时若干周波的电流数据；S1 uses the fault recorder to detect the current data of several cycles when the circuit breaker is opened;
S2利用天线检测断路器分闸时辐射的电磁波信号；S2 uses the antenna to detect the electromagnetic wave signal radiated when the circuit breaker is opened;
S3结合电流数据与电磁波信号，判定与电磁波信号对应的相别。S3 combines the current data and the electromagnetic wave signal to determine the phase difference corresponding to the electromagnetic wave signal.
本申请具体的实施过程如下：利用故障录波与辐射电磁波检测相结合方法实现断路器触头烧蚀程度带电检测的相别判定。判定流程如图1所示。The specific implementation process of the present application is as follows: using the method of combining fault recording and radiation electromagnetic wave detection to realize the phase difference judgment of the electrified detection of the ablation degree of the circuit breaker contacts. The judgment process is shown in Figure 1.
利用故障录波装置检测断路器分闸时刻前后多个周波的电流数据，根据录波曲线得到断路器分闸动作时三相动作顺序。如图2所示，C相为本次断路器分闸过程中首动作相。The fault wave recording device is used to detect the current data of multiple cycles before and after the opening time of the circuit breaker, and the three-phase action sequence of the circuit breaker when the circuit breaker opens is obtained according to the wave recording curve. As shown in Figure 2, phase C is the first action phase during the opening process of the circuit breaker.
利用天线检测断路器分闸时辐射的电磁波信号，根据电磁波信号判断断路器内部触头的烧蚀程度，如图3所示。Use the antenna to detect the electromagnetic wave signal radiated when the circuit breaker opens, and judge the ablation degree of the internal contacts of the circuit breaker according to the electromagnetic wave signal, as shown in Figure 3.
结合故障录波数据与天线检测的电磁波信号判断出电磁波信号分别对应的相别。如图2、图3所示，本次断路器分闸过程中，C相对应电磁波信号中1信号，之后依次对应。由此可实现断路器触头烧蚀程度带电检测的相别判定。Combined with the fault recording data and the electromagnetic wave signal detected by the antenna, the corresponding phase difference of the electromagnetic wave signal is judged. As shown in Figure 2 and Figure 3, during the opening process of the circuit breaker, C corresponds to the 1 signal in the electromagnetic wave signal, and then corresponds in turn. In this way, the phase-by-phase determination of the electrified detection of the ablation degree of the circuit breaker contact can be realized.
实施例二Embodiment two
参见图1～3，为本发明实施例提供的一种带电检测相别判定方法，所述判定方法包括以下步骤：Referring to Figures 1 to 3, it is a live detection phase identification method provided by an embodiment of the present invention. The determination method includes the following steps:
S1利用故障录波装置检测断路器分闸时若干周波的电流数据；S1 uses the fault recorder to detect the current data of several cycles when the circuit breaker is opened;
S2利用天线检测断路器分闸时辐射的电磁波信号；S2 uses the antenna to detect the electromagnetic wave signal radiated when the circuit breaker is opened;
S3结合电流数据与电磁波信号，判定与电磁波信号对应的相别。S3 combines the current data and the electromagnetic wave signal to determine the phase difference corresponding to the electromagnetic wave signal.
可选地，所述S1中的电流数据形成录波电流波形，所述录波电流波形与断路器分闸时的三相电相对应。Optionally, the current data in S1 forms a recorded wave current waveform, and the recorded wave current waveform corresponds to the three-phase electricity when the circuit breaker is opened.
可选地，所述S2中的电磁波信号与断路器内部触头的烧蚀程度相对应。Optionally, the electromagnetic wave signal in S2 corresponds to the ablation degree of the internal contacts of the circuit breaker.
可选地，所述录波电流波形过零点的时间顺序与三相电电磁波形的相序对应。Optionally, the time sequence of the zero-crossing points of the recording current waveform corresponds to the phase sequence of the three-phase electric and electromagnetic waveform.
本申请具体的实施过程如下：利用故障录波与辐射电磁波检测相结合方法实现断路器触头烧蚀程度带电检测的相别判定。判定流程如图1所示。The specific implementation process of the present application is as follows: using the method of combining fault recording and radiation electromagnetic wave detection to realize the phase difference judgment of the electrified detection of the ablation degree of the circuit breaker contacts. The judgment process is shown in Figure 1.
利用故障录波装置检测断路器分闸时刻前后多个周波的电流数据，根据录波曲线得到断路器分闸动作时三相动作顺序。如图2所示，C相为本次断路器分闸过程中首动作相。The fault wave recording device is used to detect the current data of multiple cycles before and after the opening time of the circuit breaker, and the three-phase action sequence of the circuit breaker when the circuit breaker opens is obtained according to the wave recording curve. As shown in Figure 2, phase C is the first action phase during the opening process of the circuit breaker.
利用天线检测断路器分闸时辐射的电磁波信号，根据电磁波信号判断断路器内部触头的烧蚀程度，如图3所示。Use the antenna to detect the electromagnetic wave signal radiated when the circuit breaker opens, and judge the ablation degree of the internal contacts of the circuit breaker according to the electromagnetic wave signal, as shown in Figure 3.
结合故障录波数据与天线检测的电磁波信号判断出电磁波信号分别对应的相别。如图2、图3所示，本次断路器分闸过程中，C相对应电磁波信号中1信号，之后依次对应。由此可实现断路器触头烧蚀程度带电检测的相别判定。Combined with the fault recording data and the electromagnetic wave signal detected by the antenna, the corresponding phase difference of the electromagnetic wave signal is judged. As shown in Figure 2 and Figure 3, during the opening process of the circuit breaker, C corresponds to the 1 signal in the electromagnetic wave signal, and then corresponds in turn. In this way, the phase-by-phase determination of the electrified detection of the ablation degree of the circuit breaker contact can be realized.
实施例三Embodiment three
参见图1～3，为本发明实施例提供的一种带电检测相别判定方法，所述判定方法包括以下步骤：Referring to Figures 1 to 3, it is a live detection phase identification method provided by an embodiment of the present invention. The determination method includes the following steps:
S1利用故障录波装置检测断路器分闸时若干周波的电流数据；S1 uses the fault recorder to detect the current data of several cycles when the circuit breaker is opened;
S2利用天线检测断路器分闸时辐射的电磁波信号；S2 uses the antenna to detect the electromagnetic wave signal radiated when the circuit breaker is opened;
S3结合电流数据与电磁波信号，判定与电磁波信号对应的相别。S3 combines the current data and the electromagnetic wave signal to determine the phase difference corresponding to the electromagnetic wave signal.
可选地，所述S1中的电流数据形成录波电流波形，所述录波电流波形与断路器分闸时的三相电相对应。Optionally, the current data in S1 forms a recorded wave current waveform, and the recorded wave current waveform corresponds to the three-phase electricity when the circuit breaker is opened.
可选地，所述S2中的电磁波信号与断路器内部触头的烧蚀程度相对应。Optionally, the electromagnetic wave signal in S2 corresponds to the ablation degree of the internal contacts of the circuit breaker.
可选地，所述录波电流波形过零点的时间顺序与三相电电磁波形的相序对应。Optionally, the time sequence of the zero-crossing points of the recording current waveform corresponds to the phase sequence of the three-phase electric and electromagnetic waveform.
可选地，所述判定方法还包括断路器相别烧蚀程度的带电判定。Optionally, the judging method further includes electrification judging of the degree of ablation of the circuit breaker.
本申请具体的实施过程如下：利用故障录波与辐射电磁波检测相结合方法实现断路器触头烧蚀程度带电检测的相别判定。判定流程如图1所示。The specific implementation process of the present application is as follows: using the method of combining fault recording and radiation electromagnetic wave detection to realize the phase difference judgment of the electrified detection of the ablation degree of the circuit breaker contacts. The judgment process is shown in Figure 1.
利用故障录波装置检测断路器分闸时刻前后多个周波的电流数据，根据录波曲线得到断路器分闸动作时三相动作顺序。如图2所示，C相为本次断路器分闸过程中首动作相。The fault wave recording device is used to detect the current data of multiple cycles before and after the opening time of the circuit breaker, and the three-phase action sequence of the circuit breaker when the circuit breaker opens is obtained according to the wave recording curve. As shown in Figure 2, phase C is the first action phase during the opening process of the circuit breaker.
利用天线检测断路器分闸时辐射的电磁波信号，根据电磁波信号判断断路器内部触头的烧蚀程度，如图3所示。Use the antenna to detect the electromagnetic wave signal radiated when the circuit breaker opens, and judge the ablation degree of the internal contacts of the circuit breaker according to the electromagnetic wave signal, as shown in Figure 3.
结合故障录波数据与天线检测的电磁波信号判断出电磁波信号分别对应的相别，进而判定带电判别断路器相别的烧蚀程度。如图2、图3所示，本次断路器分闸过程中，C相对应电磁波信号中1信号，之后依次对应。由此可实现断路器触头烧蚀程度带电检测的相别判定。Combining the fault wave recording data and the electromagnetic wave signal detected by the antenna to determine the phase difference corresponding to the electromagnetic wave signal, and then determine the ablation degree of the phase difference of the live discrimination circuit breaker. As shown in Figure 2 and Figure 3, during the opening process of the circuit breaker, C corresponds to the 1 signal in the electromagnetic wave signal, and then corresponds in turn. In this way, the phase-by-phase determination of the electrified detection of the ablation degree of the circuit breaker contact can be realized.
以上所述仅是本发明实施例的具体实施方式，使本领域技术人员能够理解或实现本发明。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above descriptions are only specific implementation manners of the embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
应当理解的是，本申请并不局限于上面已经描述并在附图中示出的内容，并且可以在不脱离其范围进行各种修改和改变。本申请的范围仅由所附的权利要求来限制。It should be understood that the present application is not limited to what has been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
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