CN106772019A - The separate detecting system of three-phase breaker electromagnetic wave signal and method - Google Patents
The separate detecting system of three-phase breaker electromagnetic wave signal and method Download PDFInfo
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Abstract
本申请实施例公开一种三相断路器电磁波信号相别检测系统及方法，通过在三相断路器周围设置第一天线和第二天线，利用第一天线和第二天线，接收三相断路器分闸时产生的电磁波信号，之后分别将电磁波信号转换成第一电压信号和第二电压信号；利用信号采集处理装置，获取第一电压信号和第二电压信号，然后计算第一电压信号和第二电压信号的接收时间差；最后根据接收时间差，输出电磁波信号所对应的相别，从而检测出每个电磁波信号所对应的具体相位，便于对严重烧蚀的触头进行及时处理，避免触头由于烧蚀程度过重而发生故障，保证电力系统的正常运行。
The embodiment of the present application discloses a three-phase circuit breaker electromagnetic wave signal phase detection system and method, by setting the first antenna and the second antenna around the three-phase circuit breaker, using the first antenna and the second antenna to receive the three-phase circuit breaker The electromagnetic wave signal generated when the gate is opened, and then the electromagnetic wave signal is converted into the first voltage signal and the second voltage signal respectively; the first voltage signal and the second voltage signal are obtained by using the signal acquisition and processing device, and then the first voltage signal and the second voltage signal are calculated The receiving time difference of the two voltage signals; finally, according to the receiving time difference, the corresponding phase difference of the output electromagnetic wave signal is detected, so as to detect the specific phase corresponding to each electromagnetic wave signal, which is convenient for timely processing of the severely ablated contacts, and avoids contact due to If the degree of ablation is too heavy, it will cause a failure to ensure the normal operation of the power system.
Description
技术领域technical field
本申请涉及断路器测技术领域，尤其涉及一种三相断路器电磁波信号相别检测系统及方法。The present application relates to the technical field of circuit breaker detection, and in particular to a system and method for phase-specific detection of electromagnetic wave signals of a three-phase circuit breaker.
背景技术Background technique
在电力系统中，为了对电网进行控制和保护，通常在电网中设置断路器。当电网发生故障时，断路器可以通过分闸动作，切断过负荷电流和短路电流，避免电网故障进一步加重。随着断路器分闸次数的增加，断路器内部触头的烧蚀程度也不断严重，触头的烧蚀程度是影响断路器寿命的主要因素。一旦触头由于烧蚀程度过重而发生故障，很容易导致电力系统的瘫痪，造成不可估量的损失。In the power system, in order to control and protect the power grid, circuit breakers are usually set in the power grid. When the power grid fails, the circuit breaker can cut off the overload current and short-circuit current through the opening action, so as to avoid further aggravation of the power grid fault. With the increase of the number of openings of the circuit breaker, the degree of ablation of the internal contacts of the circuit breaker is also becoming more and more serious, and the degree of ablation of the contacts is the main factor affecting the life of the circuit breaker. Once the contact fails due to excessive ablation, it will easily lead to the paralysis of the power system and cause immeasurable losses.
断路器产生分闸动作的过程中会产生开关电弧，从而在空间中激发出电磁波信号，该电磁波信号可以反映断路器触头的烧蚀程度。当断路器触头烧蚀严重时，辐射出的电磁波信号会发生畸变。因此，现有的断路器触头烧蚀程度检测方法，通常在断路器产生分闸动作的过程中，检测断路器辐射出的电磁波信号，通过分析电磁波信号是否发生畸变，判定断路器是否存在触头严重烧蚀的问题。When the circuit breaker generates an opening action, a switching arc will be generated, thereby exciting an electromagnetic wave signal in the space, and the electromagnetic wave signal can reflect the degree of ablation of the circuit breaker contacts. When the contact ablation of the circuit breaker is severe, the radiated electromagnetic wave signal will be distorted. Therefore, the existing methods for detecting the degree of ablation of circuit breaker contacts usually detect the electromagnetic wave signal radiated by the circuit breaker during the opening action of the circuit breaker, and determine whether the circuit breaker has contact by analyzing whether the electromagnetic wave signal is distorted. The problem of severe ablation of the head.
但是，常用的三相断路器通常具有依次分布的第一相位、第二相位以及第三相位，断路器内部对应每一相位分别相设置有一个触头，断路器产生分闸动作时，断路器的每一相都会辐射出电磁波信号，现有的断路器触头烧蚀程度检测方法，无法判定产生电磁波信号的断路器触头的相别，因此无法检测出哪个相位的触头烧蚀严重，只能将断路器拆解后确定具体的相别，不便于对严重烧蚀的触头进行及时处理。However, commonly used three-phase circuit breakers usually have the first phase, the second phase and the third phase distributed in sequence, and a contact is provided for each phase inside the circuit breaker. When the circuit breaker generates an opening action, the circuit breaker Each phase of each phase will radiate electromagnetic wave signals. The existing detection method for the degree of ablation of circuit breaker contacts cannot determine the phase difference of the circuit breaker contacts that generate electromagnetic wave signals, so it is impossible to detect which phase of the contact ablation is serious. The specific phase difference can only be determined after the circuit breaker is disassembled, which is not convenient for timely processing of severely ablated contacts.
发明内容Contents of the invention
本申请提供了一种三相断路器电磁波信号相别检测系统及方法，以解决现有的断路器触头烧蚀程度检测方法，无法判定产生电磁波信号的断路器触头的相别的问题。This application provides a three-phase circuit breaker electromagnetic wave signal phase difference detection system and method to solve the problem that the existing circuit breaker contact ablation degree detection method cannot determine the phase difference of the circuit breaker contacts that generate electromagnetic wave signals.
第一方面，本申请提供了一种三相断路器电磁波信号相别检测系统，应用于三相断路器，所述三相断路器包括依次设置的第一相位、第二相位以及第三相位，所述系统包括：In the first aspect, the present application provides a three-phase circuit breaker electromagnetic wave signal phase detection system, which is applied to a three-phase circuit breaker, and the three-phase circuit breaker includes a first phase, a second phase and a third phase arranged in sequence, The system includes:
第一天线、第二天线以及信号采集处理装置，所述第一天线和所述第二天线分别与所述信号采集处理装置连接；所述第一天线设置于所述第一相位的一侧，所述第二天线设置于所述第三相位的一侧；所述第一天线与所述第一相位之间的距离，小于所述第二天线与所述第一相位之间的距离；所述第二天线与所述第三相位之间的距离，小于所述第一天线与所述第三相位之间的距离；所述第一天线与所述第二相位之间的距离，等于所述第二天线与所述第二相位之间的距离；A first antenna, a second antenna, and a signal acquisition and processing device, the first antenna and the second antenna are respectively connected to the signal acquisition and processing device; the first antenna is arranged on one side of the first phase, The second antenna is arranged on one side of the third phase; the distance between the first antenna and the first phase is smaller than the distance between the second antenna and the first phase; The distance between the second antenna and the third phase is smaller than the distance between the first antenna and the third phase; the distance between the first antenna and the second phase is equal to the distance between the first antenna and the second phase the distance between the second antenna and the second phase;
所述第一天线，用于接收所述三相断路器分闸时产生的电磁波信号，将所述电磁波信号转换成第一电压信号；The first antenna is configured to receive an electromagnetic wave signal generated when the three-phase circuit breaker is opened, and convert the electromagnetic wave signal into a first voltage signal;
所述第二天线，用于接收所述三相断路器分闸时产生的电磁波信号，将所述电磁波信号转换成第二电压信号；The second antenna is configured to receive an electromagnetic wave signal generated when the three-phase circuit breaker is opened, and convert the electromagnetic wave signal into a second voltage signal;
所述信号采集处理装置，用于接收所述第一电压信号和所述第二电压信号，计算所述第一电压信号和所述第二电压信号的接收时间差，根据所述接收时间差，输出所述电磁波信号所对应的相别。The signal acquisition and processing device is configured to receive the first voltage signal and the second voltage signal, calculate a receiving time difference between the first voltage signal and the second voltage signal, and output the received time difference according to the receiving time difference. The phase difference corresponding to the above electromagnetic wave signal.
结合第一方面，在第一方面第一种可能的实现方式中，所述信号采集处理装置包括：With reference to the first aspect, in a first possible implementation manner of the first aspect, the signal acquisition and processing device includes:
时间差判断单元，用于判断所述接收时间差是否大于预设阈值；A time difference judging unit, configured to judge whether the receiving time difference is greater than a preset threshold;
相别输出单元，用于如果所述接收时间差大于所述预设阈值，获取所述第一电压信号和所述第二电压信号中，先接收到的电压信号所对应的目标天线信息；输出所述电磁波信号所对应的相别为，所述第一相位和所述第三相位中，距离所述目标天线信息对应的目标天线最近的相位；如果所述时间差小于或等于所述预设阈值，则输出所述电磁波信号所对应的相别为第二相位。A phase-specific output unit, configured to obtain, among the first voltage signal and the second voltage signal, the target antenna information corresponding to the voltage signal received earlier if the receiving time difference is greater than the preset threshold; output the The phase corresponding to the electromagnetic wave signal is, among the first phase and the third phase, the phase closest to the target antenna corresponding to the target antenna information; if the time difference is less than or equal to the preset threshold, Then the phase corresponding to the output electromagnetic wave signal is the second phase.
结合第一方面，在第一方面第二种可能的实现方式中，所述信号采集处理装置还包括：With reference to the first aspect, in a second possible implementation manner of the first aspect, the signal acquisition and processing device further includes:
信号畸变判断单元，用于判断所述第一电压信号和所述第二电压信号是否产生畸变；a signal distortion judging unit, configured to judge whether the first voltage signal and the second voltage signal are distorted;
触头烧蚀判定单元，用于如果所述第一电压信号和所述第二电压信号产生畸变，则判定产生所述电磁波信号的断路器触头严重烧蚀A contact ablation judging unit, configured to judge that the contact of the circuit breaker that generates the electromagnetic wave signal is seriously ablated if the first voltage signal and the second voltage signal are distorted
结合第一方面，在第一方面第三种可能的实现方式中，所述第一天线和所述第二天线的工作频带为1.7GHz～1.75GHz。With reference to the first aspect, in a third possible implementation manner of the first aspect, working frequency bands of the first antenna and the second antenna are 1.7 GHz˜1.75 GHz.
结合第一方面，在第一方面第四种可能的实现方式中，所述第一天线与所述第一相位之间的距离，等于所述第二天线与所述第三相位之间的距离；所述第二天线、所述第一天线与所述第一相位之间的距离差大于30cm。With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the distance between the first antenna and the first phase is equal to the distance between the second antenna and the third phase ; The distance difference between the second antenna, the first antenna and the first phase is greater than 30 cm.
结合第一方面，在第一方面第五种可能的实现方式中，所述信号采集处理装置的采样频率大于或等于4GS/s，扫描时间大于或等于30ms。With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the sampling frequency of the signal acquisition and processing device is greater than or equal to 4GS/s, and the scan time is greater than or equal to 30ms.
第二方面，本申请提供了一种三相断路器电磁波信号相别检测方法，用于以上所述的系统，所述方法包括如下步骤：In the second aspect, the present application provides a method for phase detection of electromagnetic wave signals of a three-phase circuit breaker, which is used in the above-mentioned system, and the method includes the following steps:
接收第一电压信号和第二电压信号，所述第一电压信号由三相断路器分闸时产生的电磁波信号，经过第一天线转换后得到，所述第二电压信号由所述电磁波信号，经过第二天线转换后得到；receiving a first voltage signal and a second voltage signal, the first voltage signal is obtained by converting the electromagnetic wave signal generated when the three-phase circuit breaker is switched off by the first antenna, and the second voltage signal is obtained by the electromagnetic wave signal, Obtained after the second antenna conversion;
计算所述第一电压信号和所述第二电压信号的接收时间差；calculating a reception time difference between the first voltage signal and the second voltage signal;
根据所述接收时间差，输出所述电磁波信号所对应的相别。According to the receiving time difference, a phase difference corresponding to the electromagnetic wave signal is output.
结合第二方面，在第二方面第一种可能的实现方式中，判定产生所述电磁波信号的断路器触头所对应的相别，包括：With reference to the second aspect, in the first possible implementation manner of the second aspect, determining the phase difference corresponding to the contact of the circuit breaker that generates the electromagnetic wave signal includes:
根据所述接收时间差，输出所述电磁波信号所对应的相别，包括：According to the receiving time difference, outputting the phase difference corresponding to the electromagnetic wave signal, including:
判断所述接收时间差是否大于预设阈值；judging whether the receiving time difference is greater than a preset threshold;
如果所述接收时间差大于所述预设阈值，则获取所述第一电压信号和所述第二电压信号中，先接收到的电压信号所对应的目标天线信息；If the receiving time difference is greater than the preset threshold, acquiring target antenna information corresponding to a voltage signal received earlier among the first voltage signal and the second voltage signal;
输出所述电磁波信号所对应的相别为，所述第一相位和所述第三相位中，距离所述目标天线信息对应的目标天线最近的相位；The phase corresponding to outputting the electromagnetic wave signal is, among the first phase and the third phase, the phase closest to the target antenna corresponding to the target antenna information;
如果所述接收时间差小于或等于所述预设阈值，则输出所述电磁波信号所对应的相别为第二相位。If the receiving time difference is less than or equal to the preset threshold, the phases corresponding to the electromagnetic wave signals are output as the second phases.
结合第二方面，在第二方面第二种可能的实现方式中，所述方法还包括：With reference to the second aspect, in a second possible implementation manner of the second aspect, the method further includes:
判断所述第一电压信号和所述第二电压信号是否产生畸变；judging whether the first voltage signal and the second voltage signal are distorted;
如果所述第一电压信号和所述第二电压信号产生畸变，则判定产生所述电磁波信号的断路器触头严重烧蚀。If the first voltage signal and the second voltage signal are distorted, it is determined that the contact of the circuit breaker that generates the electromagnetic wave signal is severely ablated.
由以上技术方案可知，本申请提供的三相断路器电磁波信号相别检测系统及方法，通过在断路器周围设置第一天线和第二天线，第一天线和第二天线分别与信号采集处理装置连接。利用第一天线，接收三相断路器分闸时产生的电磁波信号，将电磁波信号转换成第一电压信号。利用第二天线，接收三相断路器分闸时产生的电磁波信号，将电磁波信号转换成第二电压信号。利用信号采集处理装置，获取第一电压信号和第二电压信号，然后计算第一电压信号和第二电压信号的接收时间差，最后根据接收时间差，输出电磁波信号所对应的相别，对三个相位产生的电磁波信号逐一识别，检测出每个电磁波信号所对应的具体相位，后续便可以判断出触头严重烧蚀的相位，便于对严重烧蚀的触头进行及时处理，避免触头由于烧蚀程度过重而发生故障，保证电力系统的正常运行。It can be known from the above technical solutions that the three-phase circuit breaker electromagnetic wave signal phase detection system and method provided by the present application, by setting the first antenna and the second antenna around the circuit breaker, the first antenna and the second antenna are respectively connected with the signal acquisition and processing device connect. The first antenna is used to receive the electromagnetic wave signal generated when the three-phase circuit breaker is switched off, and convert the electromagnetic wave signal into a first voltage signal. The second antenna is used to receive the electromagnetic wave signal generated when the three-phase circuit breaker is opened, and convert the electromagnetic wave signal into a second voltage signal. Use the signal acquisition and processing device to obtain the first voltage signal and the second voltage signal, then calculate the receiving time difference between the first voltage signal and the second voltage signal, and finally output the phase difference corresponding to the electromagnetic wave signal according to the receiving time difference, for the three phases The generated electromagnetic wave signals are identified one by one, and the specific phase corresponding to each electromagnetic wave signal is detected, and the phase of the severe ablation of the contact can be judged later, which is convenient for timely processing of the severely ablated contacts, and avoids contact damage caused by ablation. If the level is too heavy, a fault occurs to ensure the normal operation of the power system.
附图说明Description of drawings
为了更清楚地说明本申请的技术方案，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 illustrate the technical solution of the present application more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, on the premise of not paying creative labor, Additional drawings can also be derived from these drawings.
图1为本申请实施例提供的三相断路器电磁波信号相别检测系统的示意图；FIG. 1 is a schematic diagram of a three-phase circuit breaker electromagnetic wave signal phase detection system provided by an embodiment of the present application;
图2为本申请实施例提供的三相断路器电磁波信号相别检测系统的一种框图；Fig. 2 is a block diagram of a three-phase circuit breaker electromagnetic wave signal phase detection system provided by the embodiment of the present application;
图3为本申请实施例提供的三相断路器电磁波信号相别检测系统的另一种框图；Fig. 3 is another block diagram of a three-phase circuit breaker electromagnetic wave signal phase detection system provided by the embodiment of the present application;
图4为本申请实施例提供的三相断路器电磁波信号相别检测方法的流程图；Fig. 4 is a flow chart of a phase-specific detection method for electromagnetic wave signals of a three-phase circuit breaker provided by an embodiment of the present application;
图5为本申请实施例提供的三相断路器电磁波信号相别检测方法的步骤S3的流程图；5 is a flow chart of step S3 of the method for detecting electromagnetic wave signals of three-phase circuit breakers according to the embodiment of the present application;
图6为本申请实施例提供的三相断路器电磁波信号相别检测方法的步骤S4至S6的流程图。FIG. 6 is a flow chart of steps S4 to S6 of the method for separately detecting electromagnetic wave signals of a three-phase circuit breaker provided by the embodiment of the present application.
附图说明：1-第一天线；2-第二天线；3-信号采集处理装置；10-三相断路器；11-第一相位；12-第二相位；13-第三相位；31-时间差判断单元；32-相别输出单元；33-信号畸变判断单元；34-触头烧蚀判定单元。Description of drawings: 1-first antenna; 2-second antenna; 3-signal acquisition and processing device; 10-three-phase circuit breaker; 11-first phase; 12-second phase; 13-third phase; 31- Time difference judging unit; 32-phase difference output unit; 33-signal distortion judging unit; 34-contact ablation judging unit.
具体实施方式detailed description
请参阅图1，为本申请实施例提供的一种三相断路器电磁波信号相别检测系统的示意图，所述系统应用于三相断路器10，具体包括：Please refer to FIG. 1, which is a schematic diagram of a three-phase circuit breaker electromagnetic wave signal phase detection system provided by the embodiment of the present application. The system is applied to a three-phase circuit breaker 10, and specifically includes:
第一天线1、第二天线2以及信号采集处理装置3，所述第一天线1和所述第二天线2分别与所述信号采集处理装置3连接。A first antenna 1 , a second antenna 2 and a signal collection and processing device 3 , the first antenna 1 and the second antenna 2 are respectively connected to the signal collection and processing device 3 .
其中，所述第一天线1设置于所述第一相位11的一侧，所述第二天线2设置于所述第三相位13的一侧。Wherein, the first antenna 1 is arranged on one side of the first phase 11 , and the second antenna 2 is arranged on one side of the third phase 13 .
所述第一天线1与所述第一相位11之间的距离，小于所述第二天线2与所述第一相位11之间的距离。所述第二天线2与所述第三相位13之间的距离，小于所述第一天线1与所述第三相位13之间的距离，所述第一天线1与所述第二相位12之间的距离，等于所述第二天线2与所述第二相位12之间的距离。The distance between the first antenna 1 and the first phase 11 is smaller than the distance between the second antenna 2 and the first phase 11 . The distance between the second antenna 2 and the third phase 13 is smaller than the distance between the first antenna 1 and the third phase 13, and the first antenna 1 and the second phase 12 The distance between is equal to the distance between the second antenna 2 and the second phase 12 .
其中，所述第一天线1和所述第二天线2可以设置在三相断路器10的同一侧，也可以设置在三相断路器10的不同侧。在本实施例中，以所述第一天线1和所述第二天线2设置在三相断路器10的同一侧的情况进行说明。Wherein, the first antenna 1 and the second antenna 2 can be set on the same side of the three-phase circuit breaker 10 , or can be set on different sides of the three-phase circuit breaker 10 . In this embodiment, the description will be made by taking the case that the first antenna 1 and the second antenna 2 are arranged on the same side of the three-phase circuit breaker 10 .
其中，所述第一天线1，用于接收所述三相断路器10分闸时产生的电磁波信号，将所述电磁波信号转换成第一电压信号。Wherein, the first antenna 1 is used to receive the electromagnetic wave signal generated when the three-phase circuit breaker 10 is opened, and convert the electromagnetic wave signal into a first voltage signal.
所述第二天线2，用于接收所述三相断路器10分闸时产生的电磁波信号，将所述电磁波信号转换成第二电压信号。The second antenna 2 is used to receive the electromagnetic wave signal generated when the three-phase circuit breaker 10 is switched off, and convert the electromagnetic wave signal into a second voltage signal.
所述信号采集处理装置3，用于接收第一电压信号和第二电压信号，计算所述第一电压信号和所述第二电压信号的接收时间差；根据所述接收时间差，输出所述电磁波信号所对应的相别。The signal acquisition and processing device 3 is configured to receive a first voltage signal and a second voltage signal, calculate a receiving time difference between the first voltage signal and the second voltage signal; output the electromagnetic wave signal according to the receiving time difference The corresponding difference.
第一天线1和第二天线2采用高频窄带探针天线，所述第一天线1和所述第二天线2的工作频带为具体为1.7GHz～1.75GHz，抗干扰性强，且接收电磁波信号产生的波形清晰，有利于信号采集处理装置3计算所述第一电压信号和所述第二电压信号的接收时间差，从而准确判定电磁波信号的所对应的相别。The first antenna 1 and the second antenna 2 adopt high-frequency narrow-band probe antennas, and the operating frequency bands of the first antenna 1 and the second antenna 2 are specifically 1.7GHz to 1.75GHz, which have strong anti-interference performance and receive electromagnetic waves. The waveform generated by the signal is clear, which is beneficial for the signal acquisition and processing device 3 to calculate the receiving time difference between the first voltage signal and the second voltage signal, so as to accurately determine the corresponding phase difference of the electromagnetic wave signal.
本实施例中，所述第一天线1与所述第一相位11之间的距离，等于所述第二天线2与所述第三相位13之间的距离；所述第二天线2、所述第一天线1与所述第一相位11之间的距离差大于30cm，可使得第一电压信号和第二电压信号波形的时延更明显，提升检测的准确度。In this embodiment, the distance between the first antenna 1 and the first phase 11 is equal to the distance between the second antenna 2 and the third phase 13; the second antenna 2, the The distance difference between the first antenna 1 and the first phase 11 is greater than 30 cm, which can make the time delay between the first voltage signal and the second voltage signal waveform more obvious, and improve the accuracy of detection.
根据采样定理，采样频率必须在信号频率2倍以上，在本实施例中，所述信号采集处理装置3的采样频率大于或等于4GS/s，扫描时间大于或等于30ms，由于三相信号的时间差是ms量级，断路器有缺陷时，时间差可能更长，因此扫描时间大于或等于30ms，可保证检测的顺利进行。According to the sampling theorem, the sampling frequency must be more than twice the signal frequency. In this embodiment, the sampling frequency of the signal acquisition and processing device 3 is greater than or equal to 4GS/s, and the scanning time is greater than or equal to 30ms. Due to the time difference of the three-phase signals It is in the order of ms. When the circuit breaker is defective, the time difference may be longer. Therefore, the scanning time is greater than or equal to 30ms, which can ensure the smooth progress of the detection.
此外，所述信号采集处理装置3，还可以用于对所述第一电压信号和所述第二电压信号进行模数转换，并将转换得到的数字信号进行存储，以及显示等功能。In addition, the signal acquisition and processing device 3 can also be used for performing analog-to-digital conversion on the first voltage signal and the second voltage signal, storing the converted digital signal, displaying and other functions.
如图2所示，所述信号采集处理装置3包括：As shown in Figure 2, the signal acquisition and processing device 3 includes:
时间差判断单元31，用于判断所述接收时间差是否大于预设阈值。A time difference judging unit 31, configured to judge whether the receiving time difference is greater than a preset threshold.
相别输出单元32，用于如果所述接收时间差大于所述预设阈值，获取所述第一电压信号和所述第二电压信号中，先接收到的电压信号所对应的目标天线信息。The phase difference output unit 32 is configured to acquire target antenna information corresponding to a voltage signal received earlier among the first voltage signal and the second voltage signal if the receiving time difference is greater than the preset threshold.
输出所述电磁波信号所对应的相别为，所述第一相位和所述第三相位中，距离所述目标天线信息对应的目标天线最近的相位；如果所述时间差小于或等于所述预设阈值，则输出所述电磁波信号所对应的相别为第二相位。The phase corresponding to the output of the electromagnetic wave signal is, among the first phase and the third phase, the phase closest to the target antenna corresponding to the target antenna information; if the time difference is less than or equal to the preset threshold, then output the phases corresponding to the electromagnetic wave signals as the second phases.
本实施例中，设定预设阈值为0.5ns。如果所述信号采集处理装置3接收所述第一电压信号和所述第二电压信号的时间差大于0.5ns，且所述信号采集处理装置3首先接收到第二电压信号，后接收到第一电压信号，则可以得出所述第二天线2先接收到电磁波信号，第一天线1后接收到电磁波信号。In this embodiment, the preset threshold is set to be 0.5 ns. If the time difference between the first voltage signal and the second voltage signal received by the signal acquisition and processing device 3 is greater than 0.5 ns, and the signal acquisition and processing device 3 first receives the second voltage signal and then receives the first voltage signal, it can be concluded that the second antenna 2 receives the electromagnetic wave signal first, and the first antenna 1 receives the electromagnetic wave signal later.
根据第一天线1和第二天线2距离第一相位11、第二相位12以及第三相位13的距离关系可知，第三相位13距离第二天线2最近，因此便可以判断出该电磁波信号来自于第三相位13。According to the distance relationship between the first antenna 1 and the second antenna 2 from the first phase 11, the second phase 12 and the third phase 13, the third phase 13 is the closest to the second antenna 2, so it can be judged that the electromagnetic wave signal comes from In the third phase 13.
如果所述信号采集处理装置3接收所述第一电压信号和所述第二电压信号的时间差大于0.5ns，且所述信号采集处理装置3首先接收到第一电压信号，后接收到第二电压信号，则可以得出所述第一天线1先接收到电磁波信号，第二天线2后接收到电磁波信号。If the time difference between the signal collection and processing device 3 receiving the first voltage signal and the second voltage signal is greater than 0.5 ns, and the signal collection and processing device 3 first receives the first voltage signal and then receives the second voltage signal, it can be concluded that the first antenna 1 receives the electromagnetic wave signal first, and the second antenna 2 receives the electromagnetic wave signal later.
根据第一天线1和第二天线2距离第一相位11、第二相位12以及第三相位13的距离关系可知，第一相位11距离第一天线1最近，因此便可以判断出该电磁波信号来自于第一相位11。According to the distance relationship between the first antenna 1 and the second antenna 2 from the first phase 11, the second phase 12 and the third phase 13, the first phase 11 is the closest to the first antenna 1, so it can be judged that the electromagnetic wave signal comes from In the first phase 11.
如果所述信号采集处理装置3接收所述第一电压信号和所述第二电压信号的时间差小于0.5ns，则可以看作信号采集处理装置3几乎同时接收到第一电压信号和第二电压信号。If the time difference between the signal acquisition and processing device 3 receiving the first voltage signal and the second voltage signal is less than 0.5 ns, it can be considered that the signal acquisition and processing device 3 receives the first voltage signal and the second voltage signal almost simultaneously .
根据第一天线1和第二天线2距离第一相位11、第二相位12以及第三相位13的距离关系可知，第二相位12距离第一天线1和第二天线2的距离相同，因此便可以判断出该电磁波信号来自于第二相位12。According to the distance relationship between the first antenna 1 and the second antenna 2 from the first phase 11, the second phase 12 and the third phase 13, it can be known that the distance from the second phase 12 to the first antenna 1 and the second antenna 2 is the same, so it is convenient It can be determined that the electromagnetic wave signal comes from the second phase 12 .
通过上述方式，便可以对三相断路器10分闸时产生的电磁波信号进行逐一识别，判断出每一电磁波信号所对应的相别。Through the above method, the electromagnetic wave signals generated when the three-phase circuit breaker 10 is opened can be identified one by one, and the phase difference corresponding to each electromagnetic wave signal can be determined.
如图3所示，所述信号采集处理装置3还可以包括：As shown in Figure 3, the signal acquisition and processing device 3 may also include:
信号畸变判断单元33，用于判断所述第一电压信号和所述第二电压信号是否产生畸变。The signal distortion judging unit 33 is configured to judge whether the first voltage signal and the second voltage signal are distorted.
触头烧蚀判定单元34，如果所述第一电压信号和所述第二电压信号产生畸变，则判定产生所述电磁波信号的断路器触头严重烧蚀。The contact ablation determination unit 34 determines that the contact of the circuit breaker that generates the electromagnetic wave signal is severely ablated if the first voltage signal and the second voltage signal are distorted.
在能够判断出每一电磁波信号所对应的相别的基础上，在利用电磁波信号，对触头的烧蚀情况进行检测时，无需对三相断路器10进行拆解，以及确定严重烧蚀的触头所在的相别，便于对严重烧蚀的触头进行及时处理，避免触头由于烧蚀程度过重而发生故障，保证电力系统的正常运行。On the basis of being able to determine the phase difference corresponding to each electromagnetic wave signal, when using the electromagnetic wave signal to detect the ablation of the contacts, it is not necessary to disassemble the three-phase circuit breaker 10 and determine the serious ablation The location of the contacts is different, which is convenient for the timely treatment of the severely ablated contacts, avoiding the failure of the contacts due to excessive ablation, and ensuring the normal operation of the power system.
请参阅图4，在本申请实施例提供的一种三相断路器电磁波信号相别检测系统的基础上，本申请实施例还提供一种三相断路器电磁波信号相别检测方法，用于以上所述的系统，所述方法包括如下步骤：Please refer to Figure 4. On the basis of a phase-specific detection system for electromagnetic wave signals of a three-phase circuit breaker provided by an embodiment of the present application, an embodiment of the present application also provides a phase-specific detection method for electromagnetic wave signals of a three-phase circuit breaker, which is used for the above Described system, described method comprises the steps:
步骤S1、接收第一电压信号和第二电压信号，所述第一电压信号由三相断路器分闸时产生的电磁波信号，经过第一天线转换后得到，所述第二电压信号由所述电磁波信号，经过第二天线转换后得到。Step S1, receiving a first voltage signal and a second voltage signal, the first voltage signal is obtained by converting the electromagnetic wave signal generated when the three-phase circuit breaker is switched off by the first antenna, and the second voltage signal is obtained by the The electromagnetic wave signal is obtained after conversion by the second antenna.
步骤S2、计算所述第一电压信号和所述第二电压信号的接收时间差。Step S2. Calculate the receiving time difference between the first voltage signal and the second voltage signal.
步骤S3、根据所述接收时间差，输出所述电磁波信号所对应的相别。Step S3 , outputting a phase difference corresponding to the electromagnetic wave signal according to the receiving time difference.
如图5所示，根据所述接收时间差，输出所述电磁波信号所对应的相别，包括：As shown in FIG. 5, according to the receiving time difference, the phase difference corresponding to the electromagnetic wave signal is output, including:
步骤S31、判断所述接收时间差是否大于预设阈值。Step S31 , judging whether the receiving time difference is greater than a preset threshold.
步骤S32、如果所述接收时间差大于所述预设阈值，则获取所述第一电压信号和所述第二电压信号中，先接收到的电压信号所对应的目标天线信息。Step S32. If the receiving time difference is greater than the preset threshold, acquire target antenna information corresponding to the voltage signal received earlier among the first voltage signal and the second voltage signal.
步骤S33、输出所述电磁波信号所对应的相别为，所述第一相位和所述第三相位中，距离所述目标天线信息对应的目标天线最近的相位。Step S33 , the phase corresponding to outputting the electromagnetic wave signal is, among the first phase and the third phase, the phase closest to the target antenna corresponding to the target antenna information.
步骤S34、如果所述接收时间差小于或等于所述预设阈值，则输出所述电磁波信号所对应的相别为第二相位。Step S34 , if the receiving time difference is less than or equal to the preset threshold, then outputting the corresponding phases of the electromagnetic wave signals as the second phase.
如图6所示，所述方法还包括：As shown in Figure 6, the method also includes:
步骤S4、判断所述第一电压信号和所述第二电压信号是否产生畸变。Step S4, judging whether the first voltage signal and the second voltage signal are distorted.
步骤S5、如果所述第一电压信号和所述第二电压信号产生畸变，则判定产生所述电磁波信号的断路器触头严重烧蚀。Step S5, if the first voltage signal and the second voltage signal are distorted, it is determined that the contact of the circuit breaker that generates the electromagnetic wave signal is severely ablated.
步骤S6、如果所述第一电压信号和所述第二电压信号没有产生畸变，则判定产生所述电磁波信号的断路器触头未严重烧蚀。Step S6, if the first voltage signal and the second voltage signal are not distorted, it is determined that the contact of the circuit breaker that generates the electromagnetic wave signal is not severely ablated.
具体实现中，本发明还提供一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时可包括本申请提供的三相断路器电磁波信号相别检测方法的实施例中的部分或全部步骤。所述的存储介质可为磁碟、光盘、只读存储记忆体(英文：read-onlymemory，简称：ROM)或随机存储记忆体(英文：random access memory，简称：RAM)等。In a specific implementation, the present invention also provides a computer storage medium, wherein the computer storage medium can store a program, and when the program is executed, it can include the steps in the embodiment of the three-phase circuit breaker electromagnetic wave signal detection method provided by the present application. some or all of the steps. The storage medium may be a magnetic disk, an optical disk, a read-only memory (English: read-only memory, ROM for short), or a random access memory (English: random access memory, RAM for short), and the like.
本领域的技术人员可以清楚地了解到本发明实施例中的技术可借助软件加必需的通用硬件平台的方式来实现。基于这样的理解，本发明实施例中的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例或者实施例的某些部分所述的方法。Those skilled in the art can clearly understand that the technologies in the embodiments of the present invention can be implemented by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the essence of the technical solutions in the embodiments of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM , magnetic disk, optical disk, etc., including several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present invention.
以上所述的本申请的实施方式并不构成对本发明保护范围的限定。The embodiments of the present application described above are not intended to limit the protection scope of the present invention.
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