CN115436765A - Partial discharge detection instrument and equipment noise suppression capability detection system and application method thereof - Google Patents
Partial discharge detection instrument and equipment noise suppression capability detection system and application method thereof Download PDFInfo
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Abstract
The invention discloses a noise suppression capability detection system of a partial discharge detection instrument and an application method thereof. The invention can realize the detection of the noise suppression capability of the partial discharge detection instrument and provides an effective solution for the verification and comparison of the partial discharge detection instrument.
Description
Technical Field
The invention relates to the technical field of power engineering, in particular to a system for detecting the noise suppression capability of partial discharge detection instrument equipment and an application method thereof.
Background
With the increasingly wide application of partial discharge state detection technology, problems of partial discharge detection instruments and equipment are gradually revealed. Due to the complex electromagnetic interference environment of the transformer substation, the technology for detecting and monitoring the electromagnetic interference also meets the technical development bottleneck, the missed alarm and the false alarm are serious problems commonly exposed by the existing partial discharge state detection instrument, and the authority statistics shows that more than 90% of alarms are false alarms, so that the method is based on the interference identification capability and the anti-interference level of the current state detection product, and can not be adapted to the complex electromagnetic environment of the transformer substation field. How to suppress these complex interference signals overlapping with the partial discharge signal in frequency band and improve the detection sensitivity is a bottleneck in field application of the state detection technology. Therefore, the verification and comparison work of the anti-interference capability and the interference identification capability of the state detection product is particularly important.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the invention adopts a noise simulation generating unit for generating a noise signal to the detected partial discharge detection instrument equipment, and utilizes the detected partial discharge detection instrument equipment to detect the applied interference signal and the partial discharge signal so as to determine whether the partial discharge signal can be detected or not, thereby realizing the detection of the noise suppression capability of the partial discharge detection instrument equipment and providing an effective solution for the verification and comparison of the partial discharge detection instrument equipment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the invention provides a system for detecting the noise suppression capability of partial discharge detection instrument equipment, which comprises a noise simulation generating unit, a partial discharge simulation unit and detected partial discharge detection instrument equipment, wherein the noise simulation generating unit is used for generating a noise signal to the detected partial discharge detection instrument equipment, the partial discharge simulation unit is used for generating a partial discharge signal to the detected partial discharge detection instrument equipment, and the detected partial discharge detection instrument equipment is used for detecting an applied interference signal and a partial discharge signal so as to determine whether the partial discharge signal can be detected or not.
Optionally, the noise simulation generating unit includes a control module, a radar signal generator, a mobile phone communication signal generator, a typical signal generator, a power amplifier and a signal transmitting module, where the radar signal generator, the mobile phone communication signal generator and the typical signal generator are respectively connected to a control output end of the control module, the radar signal generator and the mobile phone communication signal generator are respectively connected to the signal transmitting module, and an output end of the typical signal generator is connected to the signal transmitting module through the power amplifier.
Optionally, the signal transmitting module is a radiating antenna with a frequency band of 0 to 3 GHz.
Optionally, the partial discharge simulation unit includes regulating transformer, step-up transformer, coupling capacitor, the true type analog device of GIS and discharges the source, regulating transformer's input is used for linking to each other with outside alternating current power supply, regulating transformer's output passes through step-up transformer and links to each other with coupling capacitor, coupling capacitor and the true type analog device's of GIS electrode parallel connection, the inside of the true type analog device of GIS is located in order to be used for the simulation to produce the partial discharge signal of appointed type to the source that discharges.
Optionally, the GIS real-mode simulation device includes a support and a GIS bushing disposed on the support, a GIS electrode insulated and isolated from the GIS bushing is disposed on the GIS bushing, the GIS electrode is connected to the positive electrode of the coupling capacitor, the GIS bushing is grounded through the support, and the discharge source is disposed in the GIS bushing.
Optionally, the device further comprises a shielding room, and the noise simulation generating unit, the partial discharge simulation unit and the detected partial discharge detection instrument device are all arranged in the shielding room.
Optionally, the partial discharge detection apparatus to be detected includes two uhf sensors and a partial discharge diagnostic analysis apparatus, one of the two uhf sensors is configured to acquire a noise signal generated by the noise simulation generating unit, the other uhf sensor is configured to acquire a partial discharge signal generated by the partial discharge simulation unit, and output ends of the uhf sensors are respectively connected to the partial discharge diagnostic analysis apparatus.
The invention provides an application method of the noise suppression capability detection system of the partial discharge detection instrument, which comprises the following steps:
s1, generating a local discharge signal with designated intensity and type to detected local discharge detection instrument equipment through a local discharge simulation unit, and simultaneously generating a plurality of different noise signals through a noise simulation generation unit, wherein the plurality of different noise signals comprise at least one of different amplitudes, frequencies and types, and respectively acquiring a detection result of whether the detected local discharge detection instrument equipment can detect the local discharge signal with the intensity and the type;
and S2, determining the noise suppression capability of the detected partial discharge detection instrument equipment under the partial discharge signals with the intensity and type according to the detection result of the detected partial discharge detection instrument equipment on different noise signals.
Optionally, step S2 comprises:
s2.1, calculating the identification accuracy rate P of the partial discharge signals under the corresponding intensity and type based on P = (n/m) × 100% according to the detection results of the detected partial discharge detection instrument equipment on different noise signals, wherein n is the correct identification times of the partial discharge signals under the intensity and type in the detection results, and m is the total test times of the partial discharge signals under the intensity and type;
and S2.2, comparing the identification accuracy P with a preset gear division range to determine the noise suppression capability gear of the detected partial discharge detection instrument equipment under the partial discharge signal with the intensity and the type, wherein the preset gear division range comprises a plurality of gears with the noise suppression capability and a mapping relation between the corresponding gear with the identification accuracy P and the division range.
Optionally, the step S1 of generating a plurality of different noise signals by the noise simulation generating unit includes generating a typical interference signal by a typical signal generator, where generating the typical interference signal by the typical signal generator includes acquiring a rising edge, a pulse width, a falling edge, a pulse time interval, and an amplitude of the typical interference signal in advance on site, and then controlling the typical signal generator to restore the typical interference signal acquired on site according to the rising edge, the pulse width, the falling edge, the pulse time interval, and the amplitude, and forming the noise signal by the signal transmitting module after performing power amplification by the power amplifier.
Compared with the prior art, the invention mainly has the following advantages:
1. the invention adopts the noise simulation generating unit to generate noise signals to the detected partial discharge detection instrument equipment, detects the applied interference signals and partial discharge signals by the detected partial discharge detection instrument equipment to determine whether the partial discharge signals can be detected, can check the diagnosis result of the partial discharge uninterrupted detection instrument according to the interference signals and the partial discharge signals, statistically analyzes the accuracy of the diagnosis result under the conditions of different interference types and interference signal intensities, evaluates the noise suppression capability of the instrument, can realize the detection of the noise suppression capability of the partial discharge detection instrument equipment, is used for the diagnosis of the interference signal suppression and the partial discharge signals, and provides an effective solution for the verification and comparison of the partial discharge detection instrument equipment.
2. The invention can be used for evaluating the noise suppression capability and anti-interference performance of instruments for carrying out partial discharge ultrahigh frequency live detection and monitoring on main equipment such as a GIS (gas insulated switchgear) of a transformer substation of 66kV or more, a tank type circuit breaker and a switch cabinet, so as to guide the quality evaluation and purchase of the instruments, and has the advantages of multiple application scenes and wide application range.
Drawings
Fig. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a noise simulation generation unit according to an embodiment of the present invention.
Legend label legend: 1. a noise simulation generating unit; 11. a control module; 12. a radar signal generator; 13. a mobile phone communication signal generator; 14. a typical signal generator; 15. a power amplifier; 16. a signal transmitting module; 2. a partial discharge simulation unit; 21. a voltage regulating transformer; 22. a step-up transformer; 23. a coupling capacitor; 24. GIS true simulation equipment; 241. a support; 242. a GIS sleeve; 243. a GIS electrode; 25. a discharge source; 3. a device; 31. an ultrahigh frequency sensor; 32. a partial discharge diagnostic and analysis device.
Detailed Description
As shown in fig. 1 and 2, the present embodiment provides a noise suppression capability detection system for an partial discharge detection instrument device, including a noise simulation generation unit 1, a partial discharge simulation unit 2, and a detected partial discharge detection instrument device 3, where the noise simulation generation unit 1 is configured to generate a noise signal to the detected partial discharge detection instrument device 3, the partial discharge simulation unit 2 is configured to generate a partial discharge signal to the detected partial discharge detection instrument device 3, and the detected partial discharge detection instrument device 3 is configured to detect an applied interference signal and a partial discharge signal to determine whether the partial discharge signal can be detected.
The noise simulation generating unit 1 is a key component of the noise suppression capability detection system of the partial discharge detection instrument device of the embodiment. As shown in fig. 2 and fig. 3, the noise simulation generating unit 1 in this embodiment includes a control module 11, a radar signal generator 12, a mobile phone communication signal generator 13, a typical signal generator 14, a power amplifier 15, and a signal transmitting module 16, where the radar signal generator 12, the mobile phone communication signal generator 13, and the typical signal generator 14 are respectively connected to a control output terminal of the control module 11, the radar signal generator 12 and the mobile phone communication signal generator 13 are respectively connected to the signal transmitting module 16, and an output terminal of the typical signal generator 14 is connected to the signal transmitting module 16 through the power amplifier 15.
The control module 11 is a center of the noise simulation generating unit 1, and is communicated with the signal generating unit through a network port or a serial port to control the work of the whole platform. In this embodiment, the control module 11 uses a PC computer as a controller, develops a corresponding control program through a Labview, establishes an interference signal library through various typical electromagnetic interference data tested on site, and the upper computer program can call the data including the monopulse and the sequential pulse in the interference library, analyze the corresponding characteristics of the obtained signal, such as amplitude, frequency spectrum, various statistical spectrograms, and send a corresponding control instruction to adjust the generation of the signal generation unit. The control module 11 is used for controlling the working states of the radar signal generator 12, the mobile phone communication signal generator 13 and the typical signal generator 14, so that the amplitude of the noise signal is 0 to the maximum noise signal amplitude V according to the field requirement max Within the range of 0 to the maximum pulse time interval T max The adjustment is made within the range.
The radar signal generator 12 is an electronic circuit, and uses a chip capable of generating radar signals and a microprocessor chip as main parts, and the peripheral circuit includes a D/a conversion module, an interface circuit, a communication module for realizing connection with a control system, a crystal oscillator, a memory, and a power supply module for supplying power to each module and chip, and each component is welded on a circuit board and packaged into a small radar transmitter, and can generate radar signals in a UHF detection frequency band, and the amplitude is adjustable. It should be noted that, since the circuits required for implementing the radar transmitter are conventional circuits, the circuit structure thereof will not be described in detail here.
The mobile phone communication signal generator 13 is used for simulating different communication systems of 2G, 3G, 4G and 5G of different manufacturers, specifically, is a mobile phone communication module in this embodiment, and can generate all communication signals in a mobile phone communication band of China by replacing mobile phone cards of different systems, and set the maximum measurement range of the communication signals according to the amplitude range of the communication signals of the transformer substation counted by field test.
Corona discharge on a high-voltage conductor in a transformer substation, various discharge at the end part and the surface of a wire outlet sleeve of various high-voltage equipment, various interference pulses on an equipment grounding network and the like are pulse type signals which are very similar to partial discharge signals, are difficult to identify, have the largest interference on partial discharge detection, and are the most important part for checking whether field monitoring equipment works normally or not. For the simulation of the typical defect discharge interference, the simulation is realized by using the typical signal generator 14+ the power amplifier 15. The typical signal generator 14 is any signal generator, and can read several kinds of typical interfering single pulse and sequence pulse data collected on site through a control system, analyze and obtain characteristics of a signal such as a rising edge, a pulse width, a falling edge, a pulse time interval, an amplitude value and the like, send the characteristics to any signal generator, adjust and control the output of a corresponding signal, and output a signal with required intensity through the power amplifier 15.
In this embodiment, the signal transmitting module 16 is a radiating antenna with a frequency band of 0 to 3GHz, an amplitude-frequency response curve in the frequency band is close to an ideal one, a standing-wave ratio is less than or equal to 1.2, and a nominal impedance is 50 Ω, so that signals can be radiated well.
In this embodiment, the partial discharge simulation unit 2 includes a voltage regulating transformer 21, a step-up transformer 22, a coupling capacitor 23, a GIS real-type simulation device 24, and a discharge source 25, an input end of the voltage regulating transformer 21 is used for connecting to an external ac power supply, an output end of the voltage regulating transformer 21 is connected to the coupling capacitor 23 through the step-up transformer 22, the coupling capacitor 23 is connected in parallel with an electrode of the GIS real-type simulation device 24, and the discharge source 25 is disposed inside the GIS real-type simulation device 24 for simulating generation of a partial discharge signal of a designated type. In this embodiment, the GIS real-type simulation device 24 includes a support 241 and a GIS bushing 242 disposed on the support 241, the GIS bushing 242 is provided with a GIS electrode 243 insulated and isolated from the GIS bushing 242, the GIS electrode 243 is connected to the positive electrode of the coupling capacitor 23, the GIS bushing 242 is grounded through the support 241, the discharge source 25 is disposed in the GIS bushing 242, the discharge source 25 includes a plurality of types of discharge sources (needle point discharge, air gap discharge, suspension discharge, metal particle discharge, and the like), and can realize real simulation of a partial discharge signal generated by a field defect.
The embodiment further comprises a shielding chamber, wherein the noise simulation generation unit 1, the partial discharge simulation unit 2 and the detected partial discharge detection instrument device 3 are arranged in the shielding chamber, so that the accuracy of detecting the noise suppression capability of the partial discharge detection instrument device can be ensured.
In this embodiment, the detected partial discharge detection apparatus 3 includes two uhf sensors 31 and a partial discharge diagnostic analysis apparatus 32, one of the two uhf sensors 31 is used to collect a noise signal generated by the noise simulation generation unit 1, the other uhf sensor 31 is used to collect a partial discharge signal generated by the partial discharge simulation unit 2, and output ends of the uhf sensors 31 are respectively connected to the partial discharge diagnostic analysis apparatus 32. The partial discharge diagnostic analyzer 32 generally has a noise suppression function, and can diagnose and identify the type of the real partial discharge signal by suppressing the interference signal. The partial discharge diagnostic analysis device 32 can recognize the partial discharge signal if the noise signal generated by the noise simulation generating unit 1 is within the noise suppression capability thereof, otherwise the partial discharge signal cannot be recognized.
Needless to say, the detected partial discharge detection instrument apparatus 3 may also be composed of a single uhf sensor 31 and a partial discharge diagnostic analysis apparatus 32, but for the partial discharge detection analysis apparatus 3 of the single vhf sensor 31, the placement position of the vhf sensor 31 may affect the noise suppression capability result, so the placement position of the vhf sensor 31 should be arranged at an intermediate position between the noise simulation generation unit 1 and the partial discharge simulation unit 2 to prevent the imbalance in the size ratio between the noise signal and the partial discharge signal, thereby improving the detection accuracy of the noise suppression capability.
The embodiment provides an application method of the system for detecting the noise suppression capability of the partial discharge detection instrument, which includes:
s1, generating a local discharge signal with specified intensity and type to a detected local discharge detection instrument device 3 through a local discharge simulation unit 2, simultaneously generating a plurality of different noise signals through a noise simulation generation unit 1, wherein the plurality of different noise signals comprise at least one of different amplitudes, frequencies and types, and respectively acquiring a detection result of whether the detected local discharge detection instrument device 3 can detect the local discharge signal with the intensity and the type; because multiple different noise signal can be amplitude, frequency, at least one in the type is different, on the one hand accessible amplitude, frequency carry out size control, on the other hand can also combine the stack of an interference signal or multiple interference signal as required to realize required interference signal's diversified processing, make the partial discharge detection instrument equipment 3's to be detected detection nimble more various.
And S2, determining the noise suppression capability of the detected partial discharge detection instrument equipment 3 under the partial discharge signals with the intensity and type according to the detection result of the detected partial discharge detection instrument equipment 3 on different noise signals.
In this embodiment, step S2 includes:
s2.1, according to the detection result of the detected partial discharge detector 3 for different noise signals, calculating the identification accuracy P of the partial discharge signal under the corresponding intensity and type based on P = (n/m) × 100%, where n is the correct identification number of the partial discharge signal under the intensity and type in the detection result, and m is the total test number of the partial discharge signal under the intensity and type;
and S2.2, comparing the identification accuracy P with a preset gear division range to determine the noise suppression capability gear of the detected partial discharge detection instrument equipment 3 under the partial discharge signal with the intensity and the type, wherein the preset gear division range comprises a plurality of gears with noise suppression capability and a mapping relation between the gear with the noise suppression capability and the corresponding division range of the identification accuracy P. In this embodiment, the preset gear division ranges are as follows:
gear A: the identification accuracy rate P reaches more than 90 percent. Under the noise suppression capability gear, the partial discharge detection instrument device 3 to be detected can correctly identify a discharge signal, a random pulse and a narrow-band interference signal, can distinguish internal discharge and external discharge of the device, has excellent multi-source clustering separation capability and excellent interference suppression capability.
B gear: the identification accuracy rate P is more than 70% and less than 90%. Under this noise suppression ability gear, the partial discharge detection instrument equipment 3 that is detected can discern discharge signal and interference signal to have better multisource clustering separation ability, have certain interference suppression ability.
C gear: the identification accuracy rate P is more than 50% and less than 70%. Under the noise suppression capability, the partial discharge detection instrument 3 to be detected cannot correctly identify the discharge signal and the interference signal, and false alarm frequently occurs.
D gear: the identification accuracy P is less than 50%. Under the noise suppression capability level, the partial discharge detection instrument 3 to be detected has communication interruption and abnormal function, and cannot normally detect (due to the complex field electromagnetic environment, corresponding situations may occur, and the level can be considered to be added during evaluation).
In this embodiment, the step S1 of generating a plurality of different noise signals by the noise simulation generating unit 1 includes generating a typical interference signal by the typical signal generator 14, and generating the typical interference signal by the typical signal generator 14 includes acquiring a rising edge, a pulse width, a falling edge, a pulse time interval, and an amplitude of the typical interference signal in advance on site, and then controlling the typical signal generator 14 to restore the typical interference signal acquired on site according to the rising edge, the pulse width, the falling edge, the pulse time interval, and the amplitude, and forming the noise signal by the signal transmitting module 16 after performing power amplification by the power amplifier 15.
The application method of the noise suppression capability detection system of the partial discharge detection instrument equipment needs to firstly arrange a device capable of generating different interference source signals, adjust different interference types and interference signal intensities, then synchronously acquire partial discharge signals in the defect simulation equipment, check the diagnosis result of the partial discharge uninterrupted detection instrument according to the acquired interference signals and partial discharge signals, statistically analyze the accuracy of the diagnosis result under the conditions of different interference types and interference signal intensities, and evaluate the noise suppression capability of the instrument. It should be noted that, in step S1, the partial discharge signals with the designated intensity and type may be generated as needed, and the noise simulation generating unit 1 is combined to generate a plurality of different noise signals, so as to implement coverage of the partial discharge signals with the designated intensity and type. When a plurality of different noise signals are generated by the noise simulation generation unit 1 for a certain specified intensity and type of partial discharge signal, only one signal is applied first, the amplitude and the generation frequency increase from low to high according to the grade, evaluation is made on the result according to the output result of the device, and then the output result of the device is obtained when other interference types, two interference signals are superposed, so that a plurality of signals are superposed. Then applying voltage to change the magnitude of the defect partial discharge signal so as to change the intensity of the partial discharge signal, and then carrying out the test; and finally, grading the equipment according to the result.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The system is characterized by comprising a noise simulation generation unit (1), a partial discharge simulation unit (2) and detected partial discharge detection instrument equipment (3), wherein the noise simulation generation unit (1) is used for generating a noise signal to the detected partial discharge detection instrument equipment (3), the partial discharge simulation unit (2) is used for generating a partial discharge signal to the detected partial discharge detection instrument equipment (3), and the detected partial discharge detection instrument equipment (3) is used for detecting an applied interference signal and a partial discharge signal so as to determine whether the partial discharge signal can be detected.
2. The partial discharge detector equipment noise suppression capability detection system according to claim 1, wherein the noise simulation generation unit (1) comprises a control module (11), a radar signal generator (12), a mobile phone communication signal generator (13), a typical signal generator (14), a power amplifier (15) and a signal emission module (16), the radar signal generator (12), the mobile phone communication signal generator (13) and the typical signal generator (14) are respectively connected with a control output end of the control module (11), the radar signal generator (12) and the mobile phone communication signal generator (13) are respectively connected with the signal emission module (16), and an output end of the typical signal generator (14) is connected with the signal emission module (16) through the power amplifier (15).
3. The partial discharge detector apparatus noise suppression capability detection system according to claim 2, wherein the signal transmission module (16) is a radiation antenna with a frequency band of 0 to 3 GHz.
4. The partial discharge detection instrument device noise suppression capability detection system according to claim 2, wherein the partial discharge simulation unit (2) includes a voltage regulating transformer (21), a step-up transformer (22), a coupling capacitor (23), a GIS true type simulation device (24) and a discharge source (25), an input end of the voltage regulating transformer (21) is used for being connected with an external alternating current power supply, an output end of the voltage regulating transformer (21) is connected with the coupling capacitor (23) through the step-up transformer (22), the coupling capacitor (23) is connected in parallel with an electrode of the GIS true type simulation device (24), and the discharge source (25) is arranged inside the GIS true type simulation device (24) for simulating and generating a partial discharge signal of a specified type.
5. The partial discharge detector apparatus noise suppression capability detection system according to claim 4, wherein the GIS true analog device (24) includes a support (241) and a GIS sleeve (242) disposed on the support (241), the GIS sleeve (242) is provided with a GIS electrode (243) insulated and isolated from the GIS sleeve (242), the GIS electrode (243) is connected with the positive electrode of the coupling capacitor (23), the GIS sleeve (242) is grounded through the support (241), and the discharge source (25) is disposed in the GIS sleeve (242).
6. The system for detecting the noise suppression capability of the partial discharge detection instrument device according to claim 1, further comprising a shielding room, wherein the noise simulation generation unit (1), the partial discharge simulation unit (2), and the partial discharge detection instrument device to be detected (3) are all disposed in the shielding room.
7. The system for detecting the noise suppression capability of the partial discharge detecting instrument device according to claim 1, wherein the detected partial discharge detecting instrument device (3) comprises two ultrahigh frequency sensors (31) and a partial discharge diagnostic analyzer (32), one ultrahigh frequency sensor (31) of the two ultrahigh frequency sensors (31) is used for collecting the noise signal generated by the noise simulation generating unit (1), the other ultrahigh frequency sensor (31) is used for collecting the partial discharge signal generated by the partial discharge simulation unit (2), and the output ends of the ultrahigh frequency sensors (31) are respectively connected with the partial discharge diagnostic analyzer (32).
8. A method for using the noise suppression capability detection system of the partial discharge detector apparatus according to any one of claims 1 to 7, comprising:
s1, generating a local discharge signal with appointed intensity and type to a detected local discharge detection instrument device (3) through a local discharge simulation unit (2), and simultaneously generating a plurality of different noise signals through a noise simulation generation unit (1), wherein the plurality of different noise signals comprise at least one of different amplitudes, frequencies and types, and respectively acquiring a detection result of whether the detected local discharge detection instrument device (3) can detect the local discharge signal with the intensity and the type;
and S2, determining the noise suppression capability of the detected partial discharge detection instrument equipment (3) under the partial discharge signals with the intensity and type according to the detection result of the detected partial discharge detection instrument equipment (3) on different noise signals.
9. The method for applying the system for detecting the noise suppression capability of the partial discharge detection equipment according to claim 8, wherein the step S2 comprises:
s2.1, calculating the identification accuracy rate P of the partial discharge signals under the corresponding intensity and type based on P = (n/m) × 100% according to the detection result of the detected partial discharge detection instrument (3) on different noise signals, wherein n is the correct identification times of the partial discharge signals under the intensity and type in the detection result, and m is the total test times of the partial discharge signals under the intensity and type;
and S2.2, comparing the identification accuracy P with a preset gear division range to determine noise suppression capability gears of the detected partial discharge detection instrument equipment (3) under the partial discharge signals with the intensity and type, wherein the preset gear division range comprises a plurality of gears with noise suppression capability and a mapping relation between the corresponding gear with the identification accuracy P and the corresponding division range.
10. The method for applying the noise suppression capability detection system of the partial discharge detector equipment according to claim 9, wherein the step S1 of generating a plurality of different noise signals by the noise simulation generating unit (1) includes generating a typical interference signal by the typical signal generator (14), and the generating the typical interference signal by the typical signal generator (14) includes acquiring a rising edge, a pulse width, a falling edge, a pulse time interval and an amplitude of the typical interference signal in advance on site, and then controlling the typical signal generator (14) to recover the typical interference signal acquired on site according to the rising edge, the pulse width, the falling edge, the pulse time interval and the amplitude, and forming the noise signal by the signal transmitting module (16) after performing power amplification by the power amplifier (15).
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