CN111562531B - Method and system for detecting sensitivity of GIS built-in ultrahigh frequency sensor - Google Patents
Method and system for detecting sensitivity of GIS built-in ultrahigh frequency sensor Download PDFInfo
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Abstract
The invention discloses a method and a system for detecting the sensitivity of a built-in ultrahigh frequency sensor of a GIS, and belongs to the technical field of state sensing of power transmission and transformation equipment. The method comprises the following steps: determining an original average single-ended insertion loss value; determining a built-in ultrahigh frequency sensor with abnormal sensitivity before operation; determining a running average single-ended insertion loss value; determining a running average single-ended insertion loss transverse relative deviation value and a running average single-ended insertion loss longitudinal relative deviation value; and determining the built-in ultrahigh frequency sensor with abnormal sensitivity after operation. The method has the advantages of strong operability, accurate judgment, sensitive response, quantitative judgment and easy implementation, and can be widely applied to the detection of the sensitivity and the effectiveness of the built-in ultrahigh frequency sensor of primary equipment such as GIS and the like.
Description
Technical Field
The invention relates to the technical field of state sensing of power transmission and transformation equipment, in particular to a method and a system for detecting the sensitivity of a built-in ultrahigh frequency sensor of a GIS.
Background
A Gas Insulated Switchgear GIS (Gas Insulated Switchgear) is a critical device of a power system, and its main function is to remove a power system fault and change the system operation mode. With the increase of the scale of a power grid in China, GIS insulation discharge faults occur frequently, therefore, a GIS built-in ultrahigh Frequency (ultrahigh Frequency) sensor is usually adopted on site to detect whether partial discharge exists in the GIS, and further, whether insulation discharge fault hidden danger exists in the GIS is judged, and the GIS faults are avoided.
However, a method for independently detecting the sensitivity and the effectiveness of the built-in ultrahigh frequency sensor of the GIS is always absent on site, after the built-in ultrahigh frequency sensor of the GIS is installed or runs for a long time, the sensitivity and even the effectiveness of the built-in ultrahigh frequency sensor of the GIS on a partial discharge signal cannot be guaranteed, the sensitivity of the sensor is insufficient, the hidden danger of the insulation discharge fault is missed, the sensor fails, even self-discharge occurs, the hidden danger of the insulation discharge fault is mistaken, and the use is seriously influenced.
Disclosure of Invention
Aiming at the problems, the invention provides a method for detecting the sensitivity of a built-in ultrahigh frequency sensor of a GIS, which comprises the following steps:
after the GIS is installed, measuring original single-ended insertion loss curves of a plurality of built-in ultrahigh frequency sensors at A, B, C three-phase same structure positions of the GIS at a preset measuring frequency and a preset measuring interval, and determining an original average single-ended insertion loss value according to the original single-ended insertion loss curves;
determining an original average single-ended insertion loss transverse relative deviation value according to the original average single-ended insertion loss value, and determining any built-in ultrahigh frequency sensor with the original average single-ended insertion loss transverse relative deviation value smaller than a preset value A as a built-in ultrahigh frequency sensor with abnormal sensitivity before operation;
the GIS is operated, after the GIS is operated for preset time, the operation single-ended insertion loss curves of the multiple built-in ultrahigh frequency sensors at the A, B, C three-phase same structure position after the GIS is operated for the preset time are measured according to the preset measurement frequency and the preset measurement interval, and the operation average single-ended insertion loss value is determined according to the operation single-ended insertion loss curves;
determining a running average single-ended insertion loss transverse relative deviation value according to the running average single-ended insertion loss value, and determining a running average single-ended insertion loss longitudinal relative deviation value according to the running average single-ended insertion loss value and the original average single-ended insertion loss value;
and determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss transverse relative deviation value smaller than a preset value, or determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss longitudinal relative deviation value larger than a preset B value as a built-in ultrahigh frequency sensor with abnormal sensitivity after running.
Optionally, the preset measurement frequency is 300-1500MHz.
Optionally, the preset measurement interval is 2MHz.
Optionally, the preset value a is-0.1, and the preset value B is 5dB.
Optionally, the single-ended insertion loss curve data is a data sequence including 600 data, and the numerical value of the data is a single-ended S parameter of the built-in ultrahigh frequency sensor with a frequency of 300-1500MHz.
The invention also provides a system for detecting the sensitivity of the built-in ultrahigh frequency sensor of the GIS, which comprises the following components:
the first measurement module is used for measuring original single-ended insertion loss curves of a plurality of built-in ultrahigh frequency sensors at A, B, C three-phase same structure positions of the GIS at a preset measurement frequency and a preset measurement interval after the GIS is installed, and determining an original average single-ended insertion loss value according to the original single-ended insertion loss curves;
the first detection module is used for determining the transverse relative deviation value of the original average single-ended insertion loss according to the original average single-ended insertion loss value and determining that any one built-in ultrahigh frequency sensor with the original average single-ended insertion loss transverse relative deviation value smaller than a preset value A is a built-in ultrahigh frequency sensor with abnormal sensitivity before operation;
the second measurement module is used for measuring the operation single-ended insertion loss curves of the multiple built-in ultrahigh frequency sensors at the A, B, C three-phase same structure position after the GIS operates for the preset time at the preset measurement frequency and the preset measurement interval after the GIS operates for the preset time, and determining the operation average single-ended insertion loss value according to the operation single-ended insertion loss curves;
the processing module is used for determining a running average single-ended insertion loss transverse relative deviation value according to the running average single-ended insertion loss value and determining a running average single-ended insertion loss longitudinal relative deviation value according to the running average single-ended insertion loss value and the original average single-ended insertion loss value;
and the second detection module is used for determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss transverse relative deviation value smaller than a preset value or any built-in ultrahigh frequency sensor with the running average single-ended insertion loss longitudinal relative deviation value larger than a preset B value as a built-in ultrahigh frequency sensor with abnormal sensitivity after running.
Optionally, the preset measurement frequency is 300-1500MHz.
Optionally, the preset measurement interval is 2MHz.
Optionally, the preset value a is-0.1, and the preset value B is 5dB.
Optionally, the single-ended insertion loss curve data is a data sequence including 600 data, and the numerical value of the data is a single-ended S parameter of the built-in ultrahigh frequency sensor with a frequency of 300-1500MHz.
The invention solves the problem that an effective built-in ultrahigh frequency sensor sensitivity field inspection means is lacked after the GIS is newly installed and operated, ensures the effectiveness of the newly installed GIS built-in ultrahigh frequency sensor, and avoids the hidden trouble and false alarm caused by the insufficient sensor sensitivity;
the method detects the original single-end insertion loss curve, the original average single-end insertion loss value and the original average single-end insertion loss transverse relative deviation value of the built-in ultrahigh frequency sensor in the A, B, C three-phase GIS at the same structural position in a 300MHz-1500MHz frequency band, and can accurately detect and diagnose whether the sensitivity of the built-in ultrahigh frequency sensor of the GIS is normal after installation and operation;
the method has the advantages of strong operability, accurate judgment, sensitive response, quantitative judgment and easy implementation, and can be widely applied to the detection of the sensitivity and the effectiveness of the built-in ultrahigh frequency sensor of primary equipment such as GIS and the like.
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FIG. 1 is a flow chart of a method for detecting the sensitivity of a built-in ultrahigh frequency sensor of a GIS according to the present invention;
FIG. 2 is a flowchart of an embodiment of a method for detecting the sensitivity of a built-in UHF sensor of a GIS according to the present invention;
FIG. 3 is a graph of the original single-ended insertion loss of an embodiment of a method for detecting the sensitivity of a GIS built-in UHF sensor of the present invention;
FIG. 4 is a graph of single-ended insertion loss of operation of an embodiment of a method for detecting sensitivity of a GIS built-in UHF sensor of the present invention;
fig. 5 is a system structure diagram for detecting the sensitivity of the built-in ultrahigh frequency sensor of the GIS according to the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides a method for detecting the sensitivity of a built-in ultrahigh frequency sensor of a GIS, which comprises the following steps as shown in figure 1:
after the GIS is installed, measuring original single-ended insertion loss curves of a plurality of built-in ultrahigh frequency sensors at A, B, C three-phase same structure positions of the GIS at a measuring frequency of 300-1500MHz and a measuring interval of 2MHz, and determining an original average single-ended insertion loss value according to the original single-ended insertion loss curves;
determining an original average single-ended insertion loss transverse relative deviation value according to the original average single-ended insertion loss value, and determining that any built-in ultrahigh frequency sensor with the original average single-ended insertion loss transverse relative deviation value smaller than a preset A value is a built-in ultrahigh frequency sensor with abnormal sensitivity before operation;
operating the GIS, measuring operating single-ended insertion loss curves of a plurality of built-in ultrahigh frequency sensors at A, B, C three-phase same structure positions after the GIS operates for the preset time at the measuring frequency of 300-1500MHz and at the measuring interval of 2MHz after the GIS operates for the preset time, and determining an operating average single-ended insertion loss value according to the operating single-ended insertion loss curves;
determining a running average single-ended insertion loss transverse relative deviation value according to the running average single-ended insertion loss value, and determining a running average single-ended insertion loss longitudinal relative deviation value according to the running average single-ended insertion loss value and the original average single-ended insertion loss value;
and determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss transverse relative deviation value smaller than a preset value, or determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss longitudinal relative deviation value larger than a preset B value as a built-in ultrahigh frequency sensor with abnormal sensitivity after running.
Wherein, the preset A value is-0.1, and the preset B value is 5dB;
the data of the single-ended insertion loss curve is a data sequence containing 600 data, and the numerical value of the data is a single-ended S parameter of the built-in ultrahigh frequency sensor with the frequency of 300-1500MHz.
The invention is further illustrated by the following examples:
the flow of the embodiment is shown in figure 2 and comprises the following steps:
after the GIS is installed on site, a network analyzer is adopted to measure A, B, C three-phase GIS at the same structural position, and N original single-ended insertion loss curves S01, S02 and S03 … … S0N of built-in ultrahigh frequency sensors are obtained;
wherein the measuring frequency range is 300MHz-1500MHz, and the measuring interval is 2MHz;
the same structure position is in the same GIS installation interval or different GIS installation intervals, and A, B, C in each phase of GIS has the same internal and external structure of a GIS body and the same internal and external structure of a built-in ultrahigh frequency sensor;
the original single-ended insertion loss curve data S0n of the nth built-in ultrahigh frequency sensor is a data sequence containing 600 data, S0n = (S0 n (300), S0 (302), S0n (304) … … S0n (1500)), and the numerical values of the data are single-ended S parameters of the nth built-in ultrahigh frequency sensor at the frequencies of 300MHz, 302MHz and 304MHz … … 1500MHz after installation in sequence, and the unit is dB;
determining original average single-ended insertion loss values T0 (1), T0 (2), T0 (3) … … T0 (N) of N built-in ultrahigh frequency sensors at the same structure position of A, B, C three-phase GIS;
wherein, the original average single-ended insertion loss value of the nth built-in ultrahigh frequency sensor is T0 (n) = (S0 n (300) + S0n (302) + S0n (304) + … … S0n (1500))/600;
acquiring original average single-ended insertion loss transverse relative deviation values R0 (1), R0 (2), R0 (3) … … R0 (N) of N built-in ultrahigh frequency sensors at the same structural position of A, B, C three-phase GIS;
wherein, the original average single-ended insertion loss lateral relative deviation value R0 (N) = (T0 (N) - (T0 (1) + T0 (2) + T0 (3) + … … T0 (N))/N)/((T0 (1) + T0 (2) + T0 (3) + … … T0 (N))/N) of the nth built-in uhf sensor;
after GIS is installed on site, judging whether the sensor is abnormal or not according to the original average single-end insertion loss transverse relative deviation value of each built-in ultrahigh frequency sensor, and when the original average single-end insertion loss transverse relative deviation value R0 (n) of the nth built-in ultrahigh frequency sensor is less than-0.1, diagnosing that the sensitivity of the sensor is abnormal;
after the GIS runs for a period of time and when the sensitivity of an internal ultrahigh frequency sensor of the GIS needs to be detected, a network analyzer is adopted to measure A, B, C three-phase GIS at the same structural position, N running single-end insertion loss curves S11, S12 and S13 … … S1N of the internal ultrahigh frequency sensor are measured, the measuring frequency range is 300MHz-1500MHz, and the measuring interval is 2MHz;
the data S1n of the operation single-ended insertion loss curve of the nth built-in ultrahigh frequency sensor is a data sequence containing 600 data, S1n = (S1 n (300), S1n (302), S1n (304) … … S1n (1500)), and the numerical value of the data sequence is the single-ended S parameter of the nth built-in ultrahigh frequency sensor at the frequency of 300MHz, 302MHz, 304MHz … … MHz after the data sequence is operated for a period of time, and the unit is dB;
determining A, B, C three-phase GIS at the same structural position, and the running average single-ended insertion loss values T1 (1), T1 (2), T1 (3) … … T1 (N) of N built-in ultrahigh frequency sensors;
wherein, the running average single-ended insertion loss value T1 (n) T1 (n) = (S1 n (300) + S1n (302) + S1n (304) + … … S1n (1500))/600 of the nth built-in ultrahigh frequency sensor;
determining the running average single-ended insertion loss transverse relative deviation values R1 (1), R1 (2), R1 (3) … … R1 (N) of N built-in ultrahigh frequency sensors at the same structural position of A, B, C three-phase GIS;
wherein, the running average single-ended insertion loss lateral relative deviation value R1 (N) = (T1 (N) - (T1 (1) + T1 (2) + T1 (3) + … … T1 (N))/N)/((T1 (1) + T1 (2) + T1 (3) + … … T1 (N))/N) of the nth built-in ultrahigh frequency sensor;
determining running average single-ended insertion loss longitudinal deviation values Z1 (1), Z1 (2), Z1 (3) … … Z1 (N) of N built-in ultrahigh frequency sensors at the same structure position of A, B, C three-phase GIS;
wherein, the running average single-ended insertion loss longitudinal deviation value Z1 (n) = T1 (n) -T0 (n) of the nth built-in ultrahigh frequency sensor;
and after the GIS operates for a period of time, judging whether the sensor is abnormal according to the operation average single-ended insertion loss transverse relative deviation value and the operation average single-ended insertion loss longitudinal deviation value of each built-in ultrahigh frequency sensor, and when the operation average single-ended insertion loss transverse relative deviation value R1 (n) of the nth built-in ultrahigh frequency sensor is less than-0.1 or the operation average single-ended insertion loss longitudinal deviation value Z1 (n) is more than 5dB, judging that the sensitivity of the sensor is abnormal.
In the original single-ended insertion loss curve measured in the embodiment, as shown in fig. 3, the original average single-ended insertion loss of a certain built-in ultrahigh frequency sensor is determined to be-17.06 dB;
measuring an operation single-ended insertion loss curve after the operation is carried out for a period of time, and determining the operation average single-ended insertion loss of a certain built-in ultrahigh frequency sensor to be-16.72 dB as shown in figure 4;
and obtaining the running average single-ended insertion loss longitudinal deviation value of (-16.72 dB) - (-17.06 dB) =0.34dB, wherein the running average single-ended insertion loss longitudinal deviation value does not exceed 5dB, and the built-in ultrahigh frequency sensor is not abnormal.
The present invention further provides a system 200 for detecting the sensitivity of a built-in uhf sensor in a GIS, as shown in fig. 5, comprising:
the first measurement module 201 is used for measuring original single-ended insertion loss curves of a plurality of built-in ultrahigh frequency sensors at A, B, C three-phase same structure positions of the GIS at a measurement frequency of 300-1500MHz and a measurement interval of 2MHz after the GIS is installed, and determining an original average single-ended insertion loss value according to the original single-ended insertion loss curves;
the first detection module 202 determines an original average single-ended insertion loss lateral relative deviation value according to the original average single-ended insertion loss value, and determines that any one of the built-in ultrahigh frequency sensors with the original average single-ended insertion loss lateral relative deviation value smaller than a preset value a is a built-in ultrahigh frequency sensor with abnormal sensitivity before operation;
the second measurement module 203 is used for measuring the operation single-ended insertion loss curves of the multiple built-in ultrahigh frequency sensors at the A, B, C three-phase same structure position after the GIS is operated for the preset time at the measurement frequency of 300-1500MHz and the measurement interval of 2MHz after the GIS is operated for the preset time, and determining the operation average single-ended insertion loss value according to the operation single-ended insertion loss curves;
the processing module 204 determines a running average single-ended insertion loss lateral relative deviation value according to the running average single-ended insertion loss value, and determines a running average single-ended insertion loss longitudinal relative deviation value according to the running average single-ended insertion loss value and the original average single-ended insertion loss value;
the second detection module 205 determines that any one of the built-in uhf sensors with the running average single-ended insertion loss lateral relative deviation value smaller than the preset value, or any one of the built-in uhf sensors with the running average single-ended insertion loss longitudinal relative deviation value larger than the preset B value is a built-in uhf sensor with abnormal sensitivity after running.
Wherein, the preset A value is-0.1, and the preset B value is 5dB.
The data of the single-ended insertion loss curve is a data sequence containing 600 data, and the numerical value of the data is a single-ended S parameter of the built-in ultrahigh frequency sensor with the frequency of 300-1500MHz.
The invention solves the problem that an effective built-in ultrahigh frequency sensor sensitivity field inspection means is lacked after the GIS is newly installed and operated, ensures the effectiveness of the newly installed GIS built-in ultrahigh frequency sensor, and avoids the hidden trouble and false alarm caused by the insufficient sensor sensitivity;
the method detects the original single-end insertion loss curve, the original average single-end insertion loss value and the original average single-end insertion loss transverse relative deviation value of the built-in ultrahigh frequency sensor in the A, B, C three-phase GIS at the same structural position in a 300MHz-1500MHz frequency band, and can accurately detect and diagnose whether the sensitivity of the built-in ultrahigh frequency sensor of the GIS is normal after installation and operation;
the method has the advantages of strong operability, accurate judgment, sensitive response, quantitative judgment and easy implementation, and can be widely applied to the detection of the sensitivity and the effectiveness of the built-in ultrahigh frequency sensor of the primary equipment such as the GIS and the like.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. A method for detecting sensitivity of a GIS built-in uhf sensor, the method comprising:
after the GIS is installed, measuring an original single-ended insertion loss curve of a built-in ultrahigh frequency sensor at a A, B, C three-phase same structure position of the GIS at a preset measuring frequency and a preset measuring interval, and determining an original average single-ended insertion loss value according to the original single-ended insertion loss curve;
the data of the single-ended insertion loss curve is a data sequence containing 600 data, and the numerical value of the data is a single-ended S parameter of the built-in ultrahigh frequency sensor with the frequency of 300-1500 MHz;
determining an original average single-ended insertion loss transverse relative deviation value according to the original average single-ended insertion loss value, and determining that any built-in ultrahigh frequency sensor with the original average single-ended insertion loss transverse relative deviation value smaller than a preset A value is a built-in ultrahigh frequency sensor with abnormal sensitivity before operation;
the GIS is operated, after the GIS is operated for preset time, the operation single-ended insertion loss curve of the built-in ultrahigh frequency sensor at the A, B, C three-phase same structure position after the GIS is operated for the preset time is measured according to the preset measurement frequency and the preset measurement interval, and the operation average single-ended insertion loss value is determined according to the operation single-ended insertion loss curve;
determining a running average single-ended insertion loss transverse relative deviation value according to the running average single-ended insertion loss value, and determining a running average single-ended insertion loss longitudinal relative deviation value according to the running average single-ended insertion loss value and the original average single-ended insertion loss value;
and determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss transverse relative deviation value smaller than a preset value A, or determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss longitudinal relative deviation value larger than a preset value B as a built-in ultrahigh frequency sensor with abnormal sensitivity after running.
2. The method of claim 1, wherein the predetermined measurement frequency is 300-1500MHz.
3. The method of claim 1, the preset measurement interval being 2MHz.
4. The method of claim 1, wherein the predetermined value of a is-0.1 dB and the predetermined value of B is 5dB.
5. A system for detecting sensitivity of a built-in uhf sensor in a GIS, the system comprising:
the first measurement module is used for measuring an original single-ended insertion loss curve of a built-in ultrahigh frequency sensor at a A, B, C three-phase same structure position of the GIS according to a preset measurement frequency and a preset measurement interval after the GIS is installed, and determining an original average single-ended insertion loss value according to the original single-ended insertion loss curve;
the data of the single-ended insertion loss curve is a data sequence containing 600 data, and the numerical value of the data is a single-ended S parameter of the built-in ultrahigh frequency sensor with the frequency of 300-1500 MHz;
the first detection module is used for determining the transverse relative deviation value of the original average single-ended insertion loss according to the original average single-ended insertion loss value and determining that any one built-in ultrahigh frequency sensor with the original average single-ended insertion loss transverse relative deviation value smaller than a preset value A is a built-in ultrahigh frequency sensor with abnormal sensitivity before operation;
the second measurement module is used for measuring an operation single-ended insertion loss curve of the built-in ultrahigh frequency sensor at the A, B, C three-phase same structure position after the GIS operates for the preset time at the preset measurement frequency and the preset measurement interval after the GIS operates for the preset time and determining an operation average single-ended insertion loss value according to the operation single-ended insertion loss curve;
the processing module determines a running average single-ended insertion loss transverse relative deviation value according to the running average single-ended insertion loss value, and determines a running average single-ended insertion loss longitudinal relative deviation value according to the running average single-ended insertion loss value and the original average single-ended insertion loss value;
and the second detection module is used for determining any built-in ultrahigh frequency sensor with the running average single-ended insertion loss transverse relative deviation value smaller than a preset value A or any built-in ultrahigh frequency sensor with the running average single-ended insertion loss longitudinal relative deviation value larger than a preset value B as a built-in ultrahigh frequency sensor with abnormal sensitivity after running.
6. The system of claim 5, wherein the predetermined measurement frequency is 300-1500MHz.
7. The system of claim 5, the preset measurement interval being 2MHz.
8. The system of claim 5, wherein the predetermined A value is-0.1 dB and the predetermined B value is 5dB.
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