Anti-interference performance detection device and method of high-frequency partial discharge detector
阅读说明:本技术 高频局放检测仪的抗干扰性能检测装置和方法 (Anti-interference performance detection device and method of high-frequency partial discharge detector ) 是由 陈腾彪 于 2020-06-10 设计创作,主要内容包括:本申请涉及一种高频局放检测仪的抗干扰性能检测装置和方法。高频局放检测仪的抗干扰性能检测装置包括局放信号产生模组、第一信号采集模组、干扰信号产生模组、第二信号采集模组和信号处理模组。所述局放信号产生模组用于产生局放信号;第一信号采集模组与所述局放信号产生模组信号连接,用于采集所述局放信号;所述干扰信号产生模组用于产生不同幅值的干扰信号;所述第二信号采集模组与所述干扰信号产生模组信号连接,用于采集所述干扰信号。所述信号处理模组与所述第一信号采集模组和所述第二信号采集模组信号连接。本申请实施例提供的高频局放检测仪的抗干扰性能检测装置能够实现高频局放检测仪的抗干扰性能的检测。(The application relates to an anti-interference performance detection device and method of a high-frequency partial discharge detector. The anti-interference performance detection device of the high-frequency partial discharge detector comprises a partial discharge signal generation module, a first signal acquisition module, an interference signal generation module, a second signal acquisition module and a signal processing module. The partial discharge signal generating module is used for generating a partial discharge signal; the first signal acquisition module is in signal connection with the partial discharge signal generation module and is used for acquiring the partial discharge signal; the interference signal generating module is used for generating interference signals with different amplitudes; the second signal acquisition module is in signal connection with the interference signal generation module and is used for acquiring the interference signal. The signal processing module is in signal connection with the first signal acquisition module and the second signal acquisition module. The anti-interference performance detection device of the high-frequency partial discharge detector provided by the embodiment of the application can realize the detection of the anti-interference performance of the high-frequency partial discharge detector.)
1. The utility model provides an anti-interference performance detection device of detector is put in high frequency office which characterized in that includes:
the partial discharge signal generating module is used for generating a partial discharge signal;
the first signal acquisition module is in signal connection with the partial discharge signal generation module and is used for acquiring the partial discharge signal;
the interference signal generating module is used for generating interference signals with different amplitudes;
the second signal acquisition module is in signal connection with the interference signal generation module and is used for acquiring the interference signal;
the signal processing module is in signal connection with the first signal acquisition module and the second signal acquisition module, and is used for determining a maximum interference signal which can be resisted by the high-frequency partial discharge detector to be detected according to a detection result of the partial discharge signal of the high-frequency partial discharge detector to be detected under the interference of the interference signals with different amplitudes, and determining the anti-interference performance of the high-frequency partial discharge detector to be detected according to the maximum interference signal and the partial discharge signal.
2. The apparatus according to claim 1, wherein the partial discharge signal generating module comprises:
a plate electrode for generating an electric field;
the partial discharge signal generating assembly is in signal connection with the first signal collecting module, arranged in the electric field and used for generating the partial discharge signal based on the electric field.
3. The apparatus according to claim 2, wherein the partial discharge signal generating module further comprises:
the insulating oil cup is provided with a containing cavity, the flat electrode and the partial discharge signal generating assembly are arranged in the containing cavity, and the insulating oil cup is used for isolating air.
4. The apparatus according to claim 1, wherein the interference signal generating module comprises:
a cable termination assembly for generating an initial interference signal;
and the signal amplification assembly is electrically connected with the cable terminal assembly and is used for amplifying the initial interference signals by different times to obtain the interference signals with different amplitudes.
5. The apparatus according to claim 1, further comprising:
the third signal acquisition module is in signal connection with the partial discharge signal generation module and the interference signal generation module and is used for acquiring a mixed signal formed by the partial discharge signal and the interference signal, and the high-frequency partial discharge detector to be detected is used for detecting the partial discharge signal in the mixed signal.
6. The apparatus according to claim 1, wherein the signal processing module is specifically configured to determine an interference rejection of the high-frequency partial discharge detector to be detected according to the maximum amplitude of the maximum interference signal and the maximum amplitude of the partial discharge signal, so as to determine the interference rejection of the high-frequency partial discharge detector to be detected.
7. The apparatus according to claim 1, further comprising:
the power supply module is electrically connected with the partial discharge signal generating module and the signal processing module;
the transformer is electrically connected between the power supply module and the partial discharge signal generation module and between the power supply module and the signal processing module, and is used for adjusting the voltage of the power supply provided by the power supply module to the partial discharge signal generation module and the signal processing module.
8. The apparatus according to claim 1, wherein the first signal acquisition module and the second signal acquisition module are high-frequency current transformers.
9. A method for detecting the anti-interference performance of a high-frequency partial discharge detector to be detected by using the anti-interference performance detection apparatus of the high-frequency partial discharge detector according to any one of claims 1 to 8, comprising:
generating a partial discharge signal through the partial discharge signal generating module, and acquiring the partial discharge signal through the first signal acquisition module;
generating interference signals with different amplitudes through the interference signal generating module;
detecting the partial discharge signals under the interference of the interference signals with different amplitudes by the high-frequency partial discharge detector to be detected to obtain a detection result;
the signal processing module determines the maximum interference signal which can be resisted by the high-frequency partial discharge detector to be detected according to the detection result, acquires the maximum interference signal through the second signal acquisition module, and determines the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal.
10. The method according to claim 9, wherein the determining, by the signal processing module, the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal includes:
determining the anti-interference degree of the high-frequency partial discharge detector to be detected according to the ratio of the maximum amplitude of the maximum interference signal to the maximum amplitude of the partial discharge signal;
and determining the anti-interference performance of the high-frequency partial discharge detector to be detected according to the anti-interference degree.
Technical Field
The application relates to the technical field of power systems, in particular to an anti-interference performance detection device and method of a high-frequency partial discharge detector.
Background
The charged high-frequency partial discharge detection is the most effective means for detecting the line state of the high-voltage cable. A high frequency partial discharge detector is generally used to detect the high frequency partial discharge. The performance detection of the high-frequency partial discharge detector is crucial to the accuracy of high-frequency partial discharge detection.
In the conventional technology, the detection of the performance of the high-frequency partial discharge detector is mainly to detect the sensitivity of the high-frequency partial discharge detector under the laboratory condition. However, the detection of the sensitivity can only reflect the partial discharge detection capability of the high-frequency partial discharge detector in the case of no interference signal, and cannot detect the partial discharge detection capability of the high-frequency partial discharge detector in the case of an interference signal, that is, the anti-interference performance of the high-frequency partial discharge detector. The anti-interference performance of the high-frequency partial discharge detector is an important performance that affects the detection accuracy, and therefore, a device capable of detecting the anti-interference performance of the high-frequency partial discharge detector is needed.
Disclosure of Invention
Therefore, in order to solve the above technical problems, it is necessary to provide an apparatus and a method for detecting an anti-interference performance of a high-frequency partial discharge detector.
On the one hand, this application embodiment provides a high frequency partial discharge detector's anti-interference performance detection device, includes:
the partial discharge signal generating module is used for generating a partial discharge signal;
the first signal acquisition module is in signal connection with the partial discharge signal generation module and is used for acquiring the partial discharge signal;
the interference signal generating module is used for generating interference signals with different amplitudes;
the second signal acquisition module is in signal connection with the interference signal generation module and is used for acquiring the interference signal;
the signal processing module is in signal connection with the first signal acquisition module and the second signal acquisition module, and is used for determining a maximum interference signal which can be resisted by the high-frequency partial discharge detector to be detected according to a detection result of the partial discharge signal of the high-frequency partial discharge detector to be detected under the interference of the interference signals with different amplitudes, and determining the anti-interference performance of the high-frequency partial discharge detector to be detected according to the maximum interference signal and the partial discharge signal.
In one embodiment, the partial discharge signal generating module includes:
a plate electrode for generating an electric field;
the partial discharge signal generating assembly is in signal connection with the first signal collecting module, arranged in the electric field and used for generating the partial discharge signal based on the electric field.
In one embodiment, the partial discharge signal generating module further includes:
the insulating oil cup is provided with a containing cavity, the flat electrode and the partial discharge signal generating assembly are arranged in the containing cavity, and the insulating oil cup is used for isolating air.
In one embodiment, the interference signal generating module comprises:
a cable termination assembly for generating an initial interference signal;
and the signal amplification assembly is electrically connected with the cable terminal assembly and is used for amplifying the initial interference signals by different times to obtain the interference signals with different amplitudes.
In one embodiment, the method further comprises the following steps:
the third signal acquisition module is in signal connection with the partial discharge signal generation module and the interference signal generation module and is used for acquiring a mixed signal formed by the partial discharge signal and the interference signal, and the high-frequency partial discharge detector to be detected is used for detecting the partial discharge signal in the mixed signal.
In one embodiment, the signal processing module is specifically configured to determine the degree of interference resistance of the high-frequency partial discharge detector to be detected according to the maximum amplitude of the maximum interference signal and the maximum amplitude of the partial discharge signal, so as to determine the anti-interference performance of the high-frequency partial discharge detector to be detected.
In one embodiment, the method further comprises the following steps:
the power supply module is electrically connected with the partial discharge signal generating module and the signal processing module;
the transformer is electrically connected between the power supply module and the partial discharge signal generation module and between the power supply module and the signal processing module, and is used for adjusting the voltage of the power supply provided by the power supply module to the partial discharge signal generation module and the signal processing module.
In one embodiment, the first signal acquisition module and the second signal acquisition module are high-frequency current transformers.
On the other hand, an embodiment of the present application further provides a method for detecting an anti-interference performance of a high-frequency partial discharge detector to be detected by using the above-mentioned anti-interference performance detection apparatus for a high-frequency partial discharge detector, including:
generating a partial discharge signal through the partial discharge signal generating module, and acquiring the partial discharge signal through the first signal acquisition module;
generating interference signals with different amplitudes through the interference signal generating module;
detecting the partial discharge signals under the interference of the interference signals with different amplitudes by the high-frequency partial discharge detector to be detected to obtain a detection result;
the signal processing module determines the maximum interference signal which can be resisted by the high-frequency partial discharge detector to be detected according to the detection result, acquires the maximum interference signal through the second signal acquisition module, and determines the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal.
In one embodiment, the determining, by the signal processing module, the anti-interference performance of the to-be-detected high-frequency partial discharge detector according to the partial discharge signal and the maximum interference signal includes:
determining the anti-interference degree of the high-frequency partial discharge detector to be detected according to the ratio of the maximum amplitude of the maximum interference signal to the maximum amplitude of the partial discharge signal;
and determining the anti-interference performance of the high-frequency partial discharge detector to be detected according to the anti-interference degree.
The device comprises a partial discharge signal generation module, a first signal acquisition module, an interference signal generation module, a second signal generation module and a signal processing device. The interference signal generating module can generate interference signals with different amplitudes, so that the high-frequency partial discharge detector to be detected can detect partial discharge signals under the interference of the interference signals with different amplitudes. The signal processing module determines the maximum interference signal which can be resisted by the high-frequency partial discharge detector to be detected according to the detection result of the high-frequency partial discharge detector to be detected on the partial discharge signal, and can determine the anti-interference performance of the high-frequency partial discharge detector to be detected according to the partial discharge signal and the maximum interference signal, so that the problem that the existing method or device for detecting the anti-interference performance of the high-frequency partial discharge detector to be detected is absent is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the description of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an anti-interference performance detection apparatus of a high-frequency partial discharge detector according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a partial discharge signal generating module according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an interference signal generating module according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an anti-interference performance detection apparatus of a high-frequency partial discharge detector according to an embodiment of the present application;
fig. 5 is a schematic flowchart illustrating steps of a method for detecting an anti-interference performance of a high-frequency partial discharge detector according to an embodiment of the present application;
fig. 6 is a schematic step flow diagram of an anti-interference performance detection method of a high-frequency partial discharge detector according to an embodiment of the present application.
Description of the reference numerals
10. A high-frequency partial discharge detector to be detected;
20. an anti-interference performance detection device of the high-frequency partial discharge detector;
100. a partial discharge signal generating module;
110. a plate electrode;
120. a partial discharge signal generating element;
130. an insulating oil cup;
200. a first signal acquisition module;
300. an interference signal generating module;
310. a cable termination assembly;
311. a high voltage single core cable;
312. a cable termination metal tail pipe;
313. a wiring board;
314. a cable termination metal base;
315. a cable termination bushing;
315. the cable terminal is connected with a wire rod;
317. an overhead conductor;
320. a signal amplification component;
400. a second signal acquisition module;
500. a signal processing module;
600. a third signal acquisition module;
700. a power supply module;
800. a transformer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
The application provides an anti-interference performance detection device of detector is put in high frequency office can be used for detecting the anti-interference performance of waiting to detect the detector is put in the high frequency office. The high-frequency partial discharge detector to be detected is a device for detecting partial discharge signals. The anti-interference performance of the high-frequency partial discharge detector to be detected refers to the resistance of the high-frequency partial discharge detector to be detected to an interference signal during detection, that is, the ability of the high-frequency partial discharge detector to be detected to detect a partial discharge signal under the interference of the interference signal.
Referring to fig. 1, an embodiment of the present application provides an anti-interference performance detecting apparatus 20 of a high-frequency partial discharge detector, which includes a partial discharge
The partial discharge
The first
The interference
The second
The
The working principle of the anti-interference performance detection device 20 of the high-frequency partial discharge detector is as follows:
the partial discharge
The device for detecting the anti-interference performance of the high-frequency partial discharge detector and the method thereof provided by the embodiment include a partial discharge
Referring to fig. 2, in an embodiment, the partial discharge
The
The partial discharge
In this embodiment, the partial discharge
With continued reference to fig. 2, in an embodiment, the partial discharge
Referring to fig. 3, in one embodiment, the interference
The cable termination assembly 310 is used to generate an initial interference signal. The cable termination component 310 may be a grid device that, when operating in a live mode, may generate the initial interference signal. The voltage grade of the power grid equipment is more than 110KV, and the higher the voltage grade is, the longer the overhead line is, and the more beneficial the initial interference signal is generated. In particular, the cable termination assembly 310 may be a high voltage class outdoor substation, an electrified rail user substation, or the like.
In one particular embodiment, as shown in fig. 3, the cable termination assembly 310 may include a high voltage mono-core cable 311, a cable termination metal tail tube 312, a terminal block 313, a cable termination metal base 314, a cable termination sleeve 315, a cable termination bar 316, and an overhead conductor 317. The high-voltage single-core cable 311 is sleeved with a cable terminal metal tail pipe 312; one end of the wiring board 313 is electrically connected to the cable terminal metal tail pipe 312; a cable termination metal base 314 is disposed between the cable termination metal tail tube 312 and the cable termination sleeve 315; the cable termination bar 316 is electrically connected to the cable termination sleeve 315; the cable termination sleeve 315 is electrically connected to an overhead conductor 317. The other end of the wiring board 313 is connected to the signal amplification block 320. The cable termination metal tail pipe 312 and the signal amplification assembly 320 are grounded.
The signal amplification assembly 320 is electrically connected to the cable termination assembly 310, and is configured to amplify the initial interference signal by different times, so as to obtain the interference signals with different amplitudes. The signal amplification component 320 is a signal amplifier with adjustable amplification factor. The signal amplifier may amplify the initial interference signal generated during operation of the cable termination assembly 310 by different amplification factors and by different amplitudes of the generated interference signal.
In this embodiment, the initial interference signal generated by the cable terminal component 310 is closer to an interference signal in an actual application scenario, so that the anti-interference performance detection device 20 of the high-frequency partial discharge detector can more accurately detect the anti-interference performance of the high-frequency
Referring to fig. 4, in an embodiment, the anti-interference performance detecting apparatus 20 of the high-frequency partial discharge detector further includes a third
In an embodiment, the
Referring to fig. 4, in an embodiment, the anti-interference performance detecting apparatus 20 of the high-frequency partial discharge detector further includes a
The
In one embodiment, the first
Referring to fig. 5, an embodiment of the present application further provides a method for detecting an anti-interference performance of a high-frequency partial discharge detector to be detected by using the anti-interference performance detection apparatus of the high-frequency partial discharge detector according to any one of the above embodiments, including:
s100, generating a partial discharge signal through the partial discharge
S200, generating the interference signals with different amplitudes through the interference
The partial discharge
S300, detecting the partial discharge signals under the interference of the interference signals with different amplitudes through the high-frequency
S400, the
And S500, the
Under the interference of the interference signals with different amplitudes, the high-frequency
The detection method for the high-frequency
In a specific embodiment, the interference
Referring to fig. 6, in an embodiment, in step S500, the determining, by the
s510, determining an interference rejection of the high-frequency
And S520, determining the anti-interference performance of the high-frequency
The
In an embodiment, the
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.