Partial discharge ultrasonic detection system of ship multi-port energy manager

Abstract

The invention relates to the technical field of electrical equipment partial discharge detection, in particular to a partial discharge ultrasonic detection system of a ship multi-port energy manager. The partial discharge ultrasonic detection system comprises a signal acquisition module and a double-filter circuit, the system acquires a high-frequency ultrasonic signal of a ship multi-port energy manager through the signal acquisition module, and the high-frequency ultrasonic signal is filtered through the double-filter circuit, so that the problem of insufficient partial discharge detection precision in a complex ship environment is solved; real-time monitoring and early warning of partial discharge of the multi-port energy manager are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of partial discharge detection of electrical equipment, and in particular to a partial discharge ultrasonic detection system for a multi-port energy manager of a ship. Background Art

[0002] In the traditional marine sector, the use of diesel engines as power plants has made considerable progress. With the continuous development of the global economy, the volume of goods transported worldwide is increasing, and ships play a vital role in maritime transportation. However, the demand for fossil energy in marine transportation will continue to grow, and the waste generated by ships consuming fossil energy will have a more serious impact on the environment. New energy sources such as solar and wind power are environmentally friendly, clean, and renewable. Their application to marine power systems can effectively address the problem of ships consuming large amounts of fossil energy and generating large amounts of pollutants, making this a key area of current research.

[0003] To effectively manage and control the energy of photovoltaic and wind power systems, an advanced multi-port energy manager can be used to efficiently convert and distribute different energy types, enabling interconnection and coordinated energy utilization. This not only improves energy efficiency but also reduces energy waste and environmental pollution. However, in the complex and humid environment of the sea, the electrical insulation performance of the multi-port energy manager directly affects the safety and health of the ship's personnel.

[0004] In the existing technology, the ship power grid structure and energy management method are mentioned. The problem of electrochemical corrosion of electrical equipment on aluminum structures is solved through the coordinated control of photovoltaic power generation and energy storage systems, and the insulation management of electrical equipment. However, the energy management system of new energy ships needs to ensure that energy can be stably supplied to various electrical equipment on the ship. There is a lack of special design for multi-port energy managers under high-frequency and complex working conditions. The partial discharge of multi-port energy managers will not only affect the stability of the ship's power system, but also cause energy loss. Summary of the Invention

[0005] The problem solved by the present invention is how to realize partial discharge ultrasonic detection of a multi-port energy manager of a ship.

[0006] To solve the above problems, the present invention adopts the following technical solutions: a partial discharge ultrasonic detection system for a ship multi-port energy manager, the partial discharge ultrasonic detection system comprising: a signal acquisition module and a dual filter circuit, the signal acquisition module being used to acquire high-frequency ultrasonic signals from the ship multi-port energy manager; the dual filter circuit comprising a high-pass filter circuit and a low-pass filter circuit, the high-pass filter circuit and the low-pass filter circuit being cascaded, the low-pass filter circuit comprising a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor and a first operational amplifier, one end of the first resistor being grounded, the other end of the first resistor being connected in series with the second capacitor to the output end of the first operational amplifier, one end of the second resistor being connected to the signal acquisition module, the other end of the second resistor being connected in series with the first capacitor to the negative input end of the first operational amplifier, one end of the third resistor being connected to the negative input end of the first operational amplifier, and the other end being connected to the output end of the first operational amplifier; wherein the dual filter circuit is used to filter out interference signals.

[0007] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the partial discharge ultrasonic detection system of the ship's multi-port energy manager uses high-frequency ultrasound as the collection object, thereby avoiding the influence of the electrical signal on this detection device, and can perform quantitative detection under complex working conditions at sea; at the same time, the dual filter circuit is used to filter out low-frequency mechanical noise and high-frequency electromagnetic interference in the complex environment of the ship, significantly improving the detection accuracy of partial discharge ultrasonic signals.

[0008] Furthermore, the partial discharge ultrasonic detection system includes: a resonant circuit, the resonant circuit is connected to the signal acquisition module, the resonant circuit is used to process high-frequency ultrasonic signals, the resonant circuit includes: a fifth capacitor, a sixth capacitor and a first inductor coil, the fifth capacitor and the sixth capacitor are connected in series in the resonant circuit, and the first inductor coil is connected in parallel with the fifth capacitor and the sixth capacitor; wherein the fifth capacitor and the sixth capacitor are adjustable capacitors, and the first inductor coil is an adjustable inductor.

[0009] Compared with the existing technology, the technical effects achieved by adopting this technical solution are: the adjustable element allows dynamic adjustment of the resonant frequency, enhances the signal selectivity and sensitivity of the system, effectively captures the characteristic frequency of partial discharge, and suppresses noise in non-target frequency bands.

[0010] Furthermore, the resonant frequency of the resonant circuit is: ; Wherein, f is the resonant frequency, L is the inductance of the first inductor, Ca is the fifth capacitor, and Cb is the sixth capacitor.

[0011] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the values of the fifth capacitor, the sixth capacitor and the first inductor coil are pre-set to achieve frequency adjustment and setting, matching and resonance are performed within an appropriate frequency range, thereby avoiding clutter interference and ensuring the accuracy of the results.

[0012] Furthermore, the partial discharge ultrasonic detection system includes: a differential amplifier circuit, one end of which is connected to the dual filter circuit, and the differential amplifier circuit is used to amplify the high-frequency ultrasonic signal.

[0013] Compared with existing technologies, this solution achieves the following technical benefits: The introduction of a differential amplifier circuit amplifies the filtered signal, thereby enhancing the signal amplitude and improving the signal-to-noise ratio. This ensures that weak ultrasonic signals can be effectively processed by subsequent modules, reducing the risk of missed detections due to signal attenuation. Furthermore, the amplifier circuit incorporates a built-in protection circuit for enhanced safety. The differential amplifier circuit exhibits strong anti-interference capabilities, ensuring the accuracy and stability of the amplified partial discharge signal.

[0014] Furthermore, the partial discharge ultrasonic detection system includes: an analog-to-digital conversion module, the analog-to-digital conversion module is connected to the differential amplifier circuit, and the analog-to-digital conversion module is used to convert the high-frequency ultrasonic signal into a digital signal.

[0015] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: analog-to-digital conversion realizes signal digitization, which facilitates the use of digital algorithms for real-time analysis, storage and remote transmission.

[0016] Furthermore, the partial discharge ultrasonic detection system also includes a control module, which is used to monitor and process high-frequency ultrasonic signals in real time. When the high-frequency ultrasonic signals are abnormal, the partial discharge ultrasonic detection system alarms.

[0017] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: through the integrated control module, the signal is monitored in real time and the alarm is triggered, without the need for manual monitoring, which reduces human errors and enhances safety.

[0018] Furthermore, the high-pass filter circuit includes: a fourth resistor, a fifth resistor, a sixth resistor, a second operational amplifier, a third capacitor and a fourth capacitor; one end of the fourth resistor is grounded, and the other end is connected in series with the fourth capacitor to the output end of the second operational amplifier; one end of the fifth resistor is connected to the low-pass filter circuit, and the other end is connected in series with the third capacitor to the negative input end of the second operational amplifier; one end of the sixth resistor is connected to the negative input end of the second operational amplifier, and the other end is connected to the output end of the second operational amplifier.

[0019] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: clarifying the implementation method of the high-pass filter, cascading it with the low-pass filter to form a bandpass characteristic, and effectively filtering out low-frequency environmental noise and high-frequency electromagnetic interference.

[0020] Furthermore, the low-pass filter frequency of the low-pass filter is: ; The high-pass filter frequency of the high-pass filter is: ; Among them, R1 is the first resistor, R3 is the third resistor, R4 is the fourth resistor, R6 is the sixth resistor, C1 is the first capacitor, C2 is the second capacitor, C3 is the third capacitor, and C4 is the fourth capacitor.

[0021] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: providing a quantitative basis for filter design, facilitating the optimization of the filtering range by adjusting the resistance and capacitance parameters, and ensuring the adaptability of the system under different working conditions.

[0022] A partial discharge ultrasonic detection method is implemented by the above-mentioned partial discharge ultrasonic detection system, the partial discharge ultrasonic detection system also including a control module, and the partial discharge ultrasonic detection method includes: collecting high-frequency ultrasonic signals from a multi-port energy manager of a ship; The interference signal in the high-frequency ultrasonic signal is filtered out by a dual filter circuit; The processed high-frequency ultrasonic signal is analyzed by the control module. When the high-frequency ultrasonic signal is abnormal, the partial discharge ultrasonic detection system alarms.

[0023] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: systematic integration of hardware modules and software control, realizing an efficient and accurate closed-loop process for partial discharge detection, and ensuring the stable operation of the ship's multi-port energy manager.

[0024] The present invention also provides an electronic device, comprising: a processor for executing the above-mentioned partial discharge ultrasonic detection method; a memory for storing execution data of the partial discharge ultrasonic detection method; and a partial discharge ultrasonic detection system according to the above-mentioned method, for collecting and processing ultrasonic signals, the effects of which are not described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a novel ultrasonic detection system for partial discharge of a multi-port energy manager for new energy ships according to the present invention; Figure 2 This is a design diagram of the LC resonant circuit of the present invention; Figure 3 This is a circuit design diagram of a bandpass filter for a novel partial discharge ultrasonic detection system according to the present invention; Figure 4 This is the operational amplifier circuit design diagram of the novel partial discharge ultrasonic detection system of the present invention; Figure 5This is the analog-to-digital conversion design diagram of the novel partial discharge ultrasonic detection system of the present invention; Figure 6 This is a main program flow chart of the novel partial discharge ultrasonic detection system of the present invention; Figure 7 This is a data processing flow chart of the novel partial discharge ultrasonic detection system of the present invention; Figure 8 This is the RS485 bus networking wiring diagram of the present invention.

[0026] Description of reference numerals: 100-Signal acquisition module; 200-Resonance circuit; 300-Dual filter circuit; 400-Differential amplifier circuit; 500-Analog-to-digital conversion module; 600-Control module. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or that other methods, components, devices, steps, etc. may be employed. In other cases, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0028] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to actual circumstances.

[0029] See also Figures 1-8 This embodiment provides a partial discharge ultrasonic detection system for a multi-port energy manager of a ship. The partial discharge ultrasonic detection system includes: a signal acquisition module 100 and a dual filter circuit 300. The signal acquisition module 100 is used to collect high-frequency ultrasonic signals from the multi-port energy manager of the ship; see Figure 3The dual filter circuit 300 includes a high-pass filter circuit and a low-pass filter circuit, the high-pass filter circuit and the low-pass filter circuit are cascaded, the low-pass filter circuit includes a first capacitor C1, a second capacitor C2, a first resistor R1, a second resistor R2, a third resistor R3 and a first operational amplifier U2, one end of the first resistor R1 is grounded, the other end of the first resistor R1 and the second capacitor C2 are connected in series to the output end of the first operational amplifier U2, one end of the second resistor R2 is connected to the signal acquisition module 100, the other end of the second resistor R2 and the first capacitor C1 are connected in series to the negative input end of the first operational amplifier U2, one end of the third resistor R3 is connected to the negative input end of the first operational amplifier U2, and the other end is connected to the output end of the first operational amplifier U2; wherein, the dual filter circuit 300 is used to filter out interference signals.

[0030] The partial discharge ultrasonic detection system of the ship's multi-port energy manager uses high-frequency ultrasound as the collection object, thereby avoiding the influence of electrical signal on this detection device and enabling quantitative detection under complex working conditions at sea; at the same time, the dual filter circuit 300 filters out low-frequency mechanical noise and high-frequency electromagnetic interference in the complex environment of the ship, significantly improving the detection accuracy of partial discharge ultrasonic signals.

[0031] For example, the signal acquisition module 100 uses an LC resonant sensor to collect signals. The LC passive resonant sensor is based on the relationship between the resonant frequency and the capacitance and inductance values. When the input signal frequency is equal to the resonant frequency, a high level is output.

[0032] For further information, see Figure 1 and Figure 2 The partial discharge ultrasonic detection system includes: a resonant circuit 200, which is connected to the signal acquisition module 100 and is used to process high-frequency ultrasonic signals. The resonant circuit 200 includes: a fifth capacitor Ca, a sixth capacitor Cb, and a first inductor coil L. The fifth capacitor Ca and the sixth capacitor Cb are connected in series in the resonant circuit 200, and the first inductor coil L is connected in parallel with the fifth capacitor Ca and the sixth capacitor Cb; wherein the fifth capacitor Ca and the sixth capacitor Cb are adjustable capacitors, and the first inductor coil is an adjustable inductor.

[0033] Preferably, the resonant circuit 200 adopts an LC oscillating circuit, and the changes of the relevant parameters are obtained by measuring the changes of the electromagnetic coupling resonant frequency of the LC oscillating circuit. Figure 2 The LC oscillation circuit also includes an upper bias resistor Rb1, a lower bias resistor Rb2, a transistor Q1, a resistor Re, an inductor element Lc, and capacitor elements Cc, Cd, and Ce.

[0034] The adjustable element allows dynamic adjustment of the resonant frequency, enhances the signal selectivity and sensitivity of the system, effectively captures the characteristic frequency of partial discharge, and suppresses noise in non-target frequency bands.

[0035] Furthermore, the resonant frequency of the resonant circuit 200 is: ; Wherein, f is the resonant frequency, L is the inductance of the first inductor, Ca is the capacitance of the fifth capacitor, and Cb is the capacitance of the sixth capacitor Cb.

[0036] The values of the fifth capacitor Ca, the sixth capacitor Cb and the first inductor L are preset to achieve frequency adjustment and setting, and to perform matching and resonance within an appropriate frequency range, thereby avoiding clutter interference and ensuring the accuracy of the results.

[0037] For further information, see Figure 4 The partial discharge ultrasonic detection system includes: a differential amplifier circuit 400, one end of which is connected to the dual filter circuit. The differential amplifier circuit 400 is used to amplify the high-frequency ultrasonic signal. For example, the resistor R7 is 49.9kΩ and together with the fourth operational amplifier U4, forms the differential amplifier circuit 400.

[0038] For example, see Figure 8 The partial discharge ultrasonic detection system in this application also includes an RS485 communication circuit, which is used to transmit data.

[0039] The differential amplifier circuit 400 amplifies the filtered signal and thereby increases the signal amplitude, improving the signal-to-noise ratio. This ensures that weak ultrasonic signals can be effectively processed by subsequent modules and reduces the risk of missed detections due to signal attenuation. Furthermore, the amplifier circuit includes a built-in protection circuit for enhanced safety. The differential amplifier circuit 400 exhibits strong anti-interference capabilities, ensuring the accuracy and stability of the amplified partial discharge signal.

[0040] For further information, see Figure 5 The partial discharge ultrasonic detection system includes an analog-to-digital conversion module connected to the differential amplifier circuit 400 and configured to convert the high-frequency ultrasonic signal into a digital signal. The analog-to-digital conversion circuit also includes resistors R8 and R9.

[0041] For example, the analog-to-digital conversion module uses the analog-to-digital conversion C0801 digital conversion chip and is externally supplied with 3.3V DC power. ; Where, is the output voltage, V1 is the input voltage, V2 is the set reference value, n is the number of digits.

[0042] Analog-to-digital conversion digitizes signals, facilitating real-time analysis, storage, and remote transmission using digital algorithms.

[0043] Furthermore, the partial discharge ultrasonic detection system further includes a control module 600, which is used to monitor and process high-frequency ultrasonic signals in real time. When the high-frequency ultrasonic signals are abnormal, the partial discharge ultrasonic detection system alarms.

[0044] For example, the control module 600 performs digital signal processing and analysis, identifies and extracts features from the partial discharge signal, and thereby obtains a judgment result of information such as the partial discharge intensity.

[0045] Through the integrated control module 600, signals are monitored in real time and alarms are triggered without the need for manual monitoring, which reduces human errors and enhances safety.

[0046] For further information, see Figure 3 The high-pass filter circuit includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a second operational amplifier U3, a third capacitor C3 and a fourth capacitor C4; one end of the fourth resistor R4 is grounded, and the other end is connected in series with the fourth capacitor C4 to the output end of the second operational amplifier U3; one end of the fifth resistor R5 is connected to the low-pass filter circuit, and the other end is connected in series with the third capacitor C3 to the negative input end of the second operational amplifier U3; one end of the sixth resistor R6 is connected to the negative input end of the second operational amplifier U3, and the other end is connected to the output end of the second operational amplifier U3.

[0047] Clarify the implementation method of the high-pass filter, cascade it with the low-pass filter to form a bandpass characteristic, and effectively filter out low-frequency environmental noise and high-frequency electromagnetic interference.

[0048] Furthermore, the low-pass filter frequency of the low-pass filter is: ; The high-pass filter frequency of the high-pass filter is: ; Among them, f 10 is the low-pass filter frequency, f 20 is the high-pass filter frequency.

[0049] It provides a quantitative basis for filter design, making it easier to optimize the filtering range by adjusting resistance and capacitance parameters, ensuring the adaptability of the system under different working conditions.

[0050] See also Figure 6 A partial discharge ultrasonic detection method is implemented by the above-mentioned partial discharge ultrasonic detection system, the partial discharge ultrasonic detection system also including a control module 600, and the partial discharge ultrasonic detection method includes: collecting high-frequency ultrasonic signals from a multi-port energy manager of a ship; The interference signal in the high-frequency ultrasonic signal is filtered out by a dual filter circuit; The processed high-frequency ultrasonic signal is analyzed by the control module 600. When the high-frequency ultrasonic signal is abnormal, the partial discharge ultrasonic detection system alarms.

[0051] Systematically integrate hardware modules and software control to achieve an efficient and accurate closed-loop process for partial discharge detection, ensuring the stable operation of the ship's multi-port energy manager.

[0052] For example, Figure 6 As shown, the main program flow of the novel partial discharge ultrasonic detection system in this application includes: First, initialize the variables and initialize the analog-to-digital conversion module. When initializing the analog-to-digital conversion module, it is necessary to consider the settings of the sampling frequency and sampling time, as well as how to perform data conversion and convert the analog signal into a digital signal. According to Shannon's sampling theorem, the sampling frequency must be at least twice the highest frequency of the sampled signal to ensure that the signal can be accurately reconstructed. To avoid spectrum aliasing in the application, the sampling frequency is set to 3-5 times the highest frequency. Determine the sampling time based on the frequency range of the collected signal. The sampling time can be shortened for high-frequency signals. At the same time, consider the time required for the analog-to-digital conversion module to complete a conversion. The sampling time should be greater than or equal to the conversion time of the analog-to-digital conversion module. Initialize the variables responsible for data storage and calculations during the main program execution, and then initialize the system clock.

[0053] Second, interrupt priority configuration, use the timer to capture the input signal, and at the same time, connect the serial interface.

[0054] Third, the signal is collected using an LC oscillation circuit and denoised using a dual filter circuit.

[0055] Fourthly, the differential amplifier circuit 400 is used to amplify the signal, and the analog-to-digital conversion value is read through the analog-to-digital conversion module.

[0056] Fifth, the control module 600 processes the analog-to-digital conversion value to detect whether it is a partial discharge signal.

[0057] The present invention also provides an electronic device, comprising: a processor for executing the above-mentioned partial discharge ultrasonic detection method; a memory for storing execution data of the partial discharge ultrasonic detection method; and a partial discharge ultrasonic detection system according to the above-mentioned method, for collecting and processing ultrasonic signals, the effects of which are not described in detail here.

[0058] As can be seen from the above, in this exemplary embodiment, the processor may include one or more processing units, for example: the processor may include an AP (Application Processor), a modem processor, a GPU (Graphics Processing Unit), an ISP (Image Signal Processor), a controller, an encoder, a decoder, a DSP (Digital Signal Processor), a baseband processor and / or an NPU (Neural-Network Processing Unit), etc.

[0059] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A partial discharge ultrasonic detection system for a ship multi-port energy manager, characterized in that: The partial discharge ultrasonic detection system comprises: A signal acquisition module, the signal acquisition module is used to collect high-frequency ultrasonic signals of the ship multi-port energy manager; A dual filter circuit, the dual filter circuit comprising a high-pass filter circuit and a low-pass filter circuit, the high-pass filter circuit and the low-pass filter circuit being cascaded, the low-pass filter circuit comprising a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, and a first operational amplifier, one end of the first resistor being grounded, the other end of the first resistor and the second capacitor being connected in series to the output end of the first operational amplifier, one end of the second resistor being connected to the signal acquisition module, the other end of the second resistor and the first capacitor being connected in series to the negative input end of the first operational amplifier, one end of the third resistor being connected to the negative input end of the first operational amplifier, and the other end being connected to the output end of the first operational amplifier; Wherein, the dual filter circuit is used to filter out interference signals.

2. The partial discharge ultrasonic detection system according to claim 1, characterized in that: The partial discharge ultrasonic detection system includes: a resonant circuit, the resonant circuit is connected to the signal acquisition module, the resonant circuit is used to process the high-frequency ultrasonic signal, the resonant circuit includes: a fifth capacitor, a sixth capacitor and a first inductor coil, the fifth capacitor and the sixth capacitor are connected in series in the resonant circuit, and the first inductor coil is connected in parallel with the fifth capacitor and the sixth capacitor; The fifth capacitor and the sixth capacitor are adjustable capacitors, and the first inductor coil is an adjustable inductor.

3. The partial discharge ultrasonic detection system according to claim 2, characterized in that: The resonant frequency of the resonant circuit is: ； Wherein, f is the resonant frequency, L is the inductance of the first inductor, Ca is the fifth capacitor, and Cb is the sixth capacitor.

4. The partial discharge ultrasonic detection system according to claim 1, characterized in that: The partial discharge ultrasonic detection system includes: a differential amplifier circuit, one end of which is connected to the dual filter circuit, and the differential amplifier circuit is used to amplify the high-frequency ultrasonic signal.

5. The partial discharge ultrasonic detection system according to claim 4, characterized in that: The partial discharge ultrasonic detection system includes: an analog-to-digital conversion module, which is connected to the differential amplifier circuit and is used to convert the high-frequency ultrasonic signal into a digital signal.

6. The partial discharge ultrasonic detection system according to claim 1, characterized in that: The partial discharge ultrasonic detection system further includes a control module, which is used to monitor and process the high-frequency ultrasonic signal in real time. When the high-frequency ultrasonic signal is abnormal, the partial discharge ultrasonic detection system alarms.

7. The partial discharge ultrasonic detection system according to claim 1, characterized in that: The high-pass filter circuit includes: a fourth resistor, a fifth resistor, a sixth resistor, a second operational amplifier, a third capacitor and a fourth capacitor; One end of the fourth resistor is grounded, and the other end is connected in series with the fourth capacitor to the output end of the second operational amplifier; One end of the fifth resistor is connected to the low-pass filter circuit, and the other end is connected in series with the third capacitor to the negative input terminal of the second operational amplifier; One end of the sixth resistor is connected to the negative input end of the second operational amplifier, and the other end is connected to the output end of the second operational amplifier.

8. The partial discharge ultrasonic detection system according to claim 7, characterized in that: The low-pass filter frequency of the low-pass filter is: ； The high-pass filter frequency of the high-pass filter is: ； Among them, R1 is the first resistor, R3 is the third resistor, R4 is the fourth resistor, R6 is the sixth resistor, C1 is the first capacitor, C2 is the second capacitor, C3 is the third capacitor, and C4 is the fourth capacitor.

9. A partial discharge ultrasonic detection method, characterized in that: The method is implemented by the partial discharge ultrasonic detection system according to any one of claims 1 to 8, wherein the partial discharge ultrasonic detection system includes a control module, and the partial discharge ultrasonic detection method includes: collecting high-frequency ultrasonic signals of the ship multi-port energy manager; filtering out interference signals in the high-frequency ultrasonic signal by the dual filter circuit; The processed high-frequency ultrasonic signal is analyzed by the control module, and when the high-frequency ultrasonic signal is abnormal, the partial discharge ultrasonic detection system alarms.

10. An electronic device, characterized in that: include: A processor, configured to execute the partial discharge ultrasonic detection method according to claim 9; A memory, configured to store execution data of the partial discharge ultrasonic detection method; And the partial discharge ultrasonic detection system according to any one of claims 1 to 8, collecting and processing ultrasonic signals.

Images