Switch cabinet equipment discharge detection method and device and electronic equipment

Abstract

The invention discloses a switch cabinet equipment discharge detection method, a switch cabinet equipment discharge detection device and electronic equipment. The method comprises the following steps: acquiring a discharge detection type parameter corresponding to switch cabinet equipment; determining a plurality of discharge physical parameters corresponding to the discharge detection type parameters; voltage condition parameters corresponding to the multiple discharge physical parameters are determined, and the voltage condition parameters are used for controlling the voltage applied to the switch cabinet equipment; determining discharge signal data respectively corresponding to the plurality of discharge physical parameters according to the voltage condition parameters respectively corresponding to the plurality of discharge physical parameters; and determining a discharge detection result corresponding to the switch cabinet equipment according to the discharge signal data corresponding to the plurality of discharge physical parameters. According to the invention, the technical problem that the discharge detection is inaccurate when the discharge detection is carried out on the switch cabinet equipment in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of data processing, and more specifically, to a method, apparatus, and electronic device for detecting discharge in switchgear equipment. Background Technology

[0002] In related technologies, partial discharge is one of the main manifestations of insulation degradation in high-voltage electrical equipment. Prolonged presence of partial discharge can lead to a decline in the performance of insulation materials and even cause equipment breakdown. As a critical piece of equipment in the power system, the detection of partial discharge within switchgear is crucial for ensuring the safe operation of the power grid. However, existing technologies for discharge detection in switchgear suffer from inaccurate detection techniques.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a method, apparatus, and electronic device for detecting discharge in switchgear equipment, in order to at least solve the technical problem of inaccurate discharge detection when performing discharge detection on switchgear equipment in related technologies.

[0005] According to one aspect of the present invention, a discharge detection method for switchgear equipment is provided, comprising: acquiring discharge detection type parameters corresponding to the switchgear equipment; determining a plurality of discharge physical parameters corresponding to the discharge detection type parameters; determining voltage condition parameters corresponding to the plurality of discharge physical parameters respectively, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; determining discharge signal data corresponding to the plurality of discharge physical parameters respectively based on the voltage condition parameters corresponding to the plurality of discharge physical parameters; and determining a discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the plurality of discharge physical parameters respectively.

[0006] Optionally, determining the discharge signal data corresponding to each of the plurality of discharge physical parameters based on the voltage condition parameters corresponding to each of the plurality of discharge physical parameters includes: determining the boost parameters corresponding to each of the plurality of discharge physical parameters when the voltage condition parameters include an initial applied voltage; determining a plurality of target applied voltages corresponding to each of the plurality of discharge physical parameters based on the initial applied voltage and boost parameters corresponding to each of the plurality of discharge physical parameters; and determining the discharge signal data corresponding to each of the plurality of discharge physical parameters based on the plurality of target applied voltages corresponding to each of the plurality of discharge physical parameters.

[0007] Optionally, determining the discharge signal data corresponding to the plurality of discharge physical parameters based on the plurality of target applied voltages corresponding to the plurality of discharge physical parameters includes: for each of the plurality of discharge physical parameters, determining the stage discharge data corresponding to the plurality of target applied voltages, thereby obtaining the plurality of stage discharge data corresponding to the plurality of discharge physical parameters; and determining the discharge signal data corresponding to the plurality of discharge physical parameters based on the plurality of stage discharge data corresponding to the plurality of discharge physical parameters.

[0008] Optionally, determining multiple target applied voltages corresponding to the multiple discharge physical parameters based on the initial applied voltage and boost parameters respectively includes: determining limit voltages corresponding to the multiple discharge physical parameters when the boost parameters include a boost gradient; and determining multiple target applied voltages corresponding to the multiple discharge physical parameters based on the limit voltages corresponding to the multiple discharge physical parameters, the initial applied voltage, and the boost gradient.

[0009] Optionally, determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the plurality of discharge physical parameters includes: when the plurality of discharge signal data includes optical signal data, electromagnetic signal data, and sound signal data, determining the optical signal intensity characteristics corresponding to the optical signal data; determining the electromagnetic signal intensity characteristics corresponding to the electromagnetic signal data; determining the sound signal intensity characteristics corresponding to the sound signal data; and determining the discharge detection result corresponding to the switchgear equipment based on the optical signal intensity characteristics, the electromagnetic signal intensity characteristics, and the sound signal intensity characteristics.

[0010] Optionally, determining the optical signal intensity characteristics corresponding to the optical signal data includes: determining the photoelectric conversion parameters corresponding to the optical signal data; determining the optical radiation power corresponding to the optical signal data based on the photoelectric conversion parameters; and determining the optical signal intensity characteristics corresponding to the optical signal data based on the optical radiation power.

[0011] Optionally, determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the plurality of discharge physical parameters includes: determining a plurality of signal association relationships corresponding to the switchgear equipment based on the discharge signal data corresponding to the plurality of discharge physical parameters, wherein the plurality of signal association relationships represent the association relationships between the discharge signal data of the corresponding discharge physical parameter item and the discharge signal data of other discharge physical parameter items; and determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the plurality of discharge physical parameters and the plurality of signal association relationships.

[0012] According to one aspect of the present invention, a discharge detection device for switchgear equipment is provided, comprising: an acquisition module for acquiring discharge detection type parameters corresponding to the switchgear equipment; a first determination module for determining a plurality of discharge physical parameters corresponding to the discharge detection type parameters; a second determination module for determining voltage condition parameters corresponding to the plurality of discharge physical parameters, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; a third determination module for determining discharge signal data corresponding to the plurality of discharge physical parameters based on the voltage condition parameters corresponding to the plurality of discharge physical parameters; and a fourth determination module for determining a discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the plurality of discharge physical parameters.

[0013] According to one aspect of the present invention, an electronic device is provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement the discharge detection method for switchgear equipment as described in any of the preceding claims.

[0014] According to one aspect of the present invention, a computer-readable storage medium is provided, wherein when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the discharge detection method for switchgear equipment described in any of the preceding claims.

[0015] In this embodiment of the invention, discharge detection type parameters corresponding to the switchgear equipment are obtained; multiple discharge physical parameters corresponding to the discharge detection type parameters are determined; voltage condition parameters corresponding to the multiple discharge physical parameters are determined, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; discharge signal data corresponding to the multiple discharge physical parameters are determined based on the voltage condition parameters corresponding to the multiple discharge physical parameters; and discharge detection results corresponding to the switchgear equipment are determined based on the discharge signal data corresponding to the multiple discharge physical parameters. By determining multiple discharge physical parameters based on the discharge detection type parameters of the switchgear equipment, since different types of partial discharge may exhibit different characteristics on different physical parameters, comprehensive consideration of multiple physical parameters can capture multi-dimensional information of discharge characteristics. Furthermore, by determining the voltage condition parameters corresponding to the multiple discharge physical parameters, it is helpful to understand the occurrence and development characteristics of discharge events of the switchgear equipment under the corresponding voltage condition parameters. Therefore, by comprehensively considering the discharge signal data of each discharge physical parameter under the corresponding voltage condition parameters, the accuracy of discharge detection of the switchgear equipment can be effectively improved, thereby solving the technical problem of inaccurate discharge detection when performing discharge detection on switchgear equipment in related technologies. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a flowchart of a discharge detection method for switchgear equipment according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a simulated switchgear partial discharge test platform in an optional embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a corona discharge defect model in an optional embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of a surface discharge defect model in an optional embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of a floating discharge defect model in an optional embodiment of the present invention;

[0022] Figure 6 This is a flowchart of the discharge detection method for switchgear equipment in an optional embodiment of the present invention;

[0023] Figure 7 This is a graph showing the calibration results of pulse amplitude and discharge quantity for measuring partial discharge using the pulse current method in an optional embodiment of the present invention.

[0024] Figure 8 This is a structural block diagram of a discharge detection device for switchgear equipment according to an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Example 1

[0028] According to an embodiment of the present invention, an embodiment of a discharge detection method for switchgear equipment is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0029] Figure 1 This is a flowchart of a discharge detection method for switchgear equipment according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0030] S102, Obtain the discharge detection type parameters corresponding to the switchgear equipment;

[0031] In step S102 of this application, the discharge detection type parameters corresponding to the switchgear equipment are obtained.

[0032] This involves switchgear equipment, which is a crucial component of power systems used for distributing electrical energy, controlling circuit switching, and protecting circuits for safe operation. In other words, this switchgear equipment is used to realize the control, protection, and distribution functions of the power system.

[0033] This includes discharge detection type parameters, which are parameters used to describe the specific types and requirements of discharge detection for switchgear equipment. These discharge detection type parameters include corona discharge, surface discharge, and floating discharge.

[0034] Obtaining the discharge detection type parameters corresponding to the switchgear equipment can clarify the specific discharge characteristics and detection requirements of the switchgear equipment, thereby providing targeted processing for subsequent detection processes.

[0035] S104, determine multiple discharge physical parameters corresponding to the discharge detection type parameters;

[0036] In step S104 of this application, multiple discharge physical parameters corresponding to the discharge detection type parameters are determined.

[0037] This involves multiple discharge physical parameters, which are various physical quantities related to the partial discharge phenomenon and used to characterize different features of the discharge process, such as light, sound, and electromagnetism.

[0038] By identifying multiple discharge physical parameters corresponding to the discharge detection type parameters, and by comprehensively analyzing various physical signals (such as light, sound, and electromagnetic fields), the multidimensional characteristics of partial discharge can be fully captured.

[0039] S106, determine the voltage condition parameters corresponding to the multiple discharge physical parameters respectively, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment;

[0040] In step S106 of this application, voltage condition parameters corresponding to multiple discharge physical parameters are determined.

[0041] This involves voltage condition parameters, which are specific parameters used to control and set the voltage applied to the switchgear equipment during partial discharge detection, including the initial applied voltage, voltage ramp-up gradient, and limit voltage.

[0042] By determining the voltage condition parameters corresponding to multiple discharge physical parameters, it is possible to systematically analyze the characteristics and development patterns of partial discharge in switchgear equipment under different voltage levels, thereby more comprehensively capturing the manifestation of discharge phenomena at different stages.

[0043] S108, based on the voltage condition parameters corresponding to the multiple discharge physical parameters, determine the discharge signal data corresponding to the multiple discharge physical parameters respectively;

[0044] In step S108 provided in this application, discharge signal data corresponding to the multiple discharge physical parameters are determined based on the voltage condition parameters corresponding to the multiple discharge physical parameters.

[0045] This includes discharge signal data, which consists of the specific values ​​and characteristics of various physical signals related to partial discharge collected by sensors during the partial discharge detection process, including pulse current signals, ultra-high frequency signals, optical signals, and ultrasonic signals.

[0046] Different types of partial discharges (such as corona discharge, surface discharge, and floating discharge) exhibit different physical characteristics (such as pulse current, ultra-high frequency signals, optical signals, and ultrasonic signals) at different voltage levels. By setting specific voltage condition parameters (such as initial applied voltage, voltage ramp-up gradient, and limiting voltage), the signal characteristics of partial discharges at different development stages can be systematically studied, thereby helping to improve the accuracy and reliability of discharge detection.

[0047] S110 determines the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to multiple discharge physical parameters.

[0048] In step S110 of this application, the discharge detection result corresponding to the switchgear equipment is determined based on the discharge signal data corresponding to the multiple discharge physical parameters.

[0049] This includes discharge detection results, which are the final results regarding the partial discharge status of the switchgear equipment obtained by comprehensively analyzing the discharge signal data corresponding to multiple discharge physical parameters. These results include: discharge type, discharge intensity, discharge development trend, and equipment status assessment.

[0050] Different discharge physical parameters reflect the characteristics of partial discharge from multiple perspectives. By comprehensively analyzing the discharge signal data corresponding to multiple discharge physical parameters, the characteristics of partial discharge can be comprehensively evaluated from multiple dimensions, thereby accurately determining the discharge detection results corresponding to the switchgear equipment.

[0051] Through the above steps S102-S110, discharge detection type parameters corresponding to the switchgear equipment are obtained; multiple discharge physical parameters corresponding to the discharge detection type parameters are determined; voltage condition parameters corresponding to the multiple discharge physical parameters are determined, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; based on the voltage condition parameters corresponding to the multiple discharge physical parameters, discharge signal data corresponding to the multiple discharge physical parameters are determined; based on the discharge signal data corresponding to the multiple discharge physical parameters, the discharge detection result corresponding to the switchgear equipment is determined. By determining multiple discharge physical parameters based on the discharge detection type parameters of the switchgear equipment, since different types of partial discharge may exhibit different characteristics on different physical parameters, comprehensive consideration of multiple physical parameters can capture multi-dimensional information of discharge characteristics. Furthermore, by determining the voltage condition parameters corresponding to the multiple discharge physical parameters, it is helpful to understand the occurrence and development characteristics of discharge events of the switchgear equipment under the corresponding voltage condition parameters. Therefore, by comprehensively considering the discharge signal data of each discharge physical parameter under the corresponding voltage condition parameters, the accuracy of discharge detection of the switchgear equipment can be effectively improved, thereby solving the technical problem of inaccurate discharge detection when performing discharge detection on switchgear equipment in related technologies.

[0052] As an optional embodiment, determining discharge signal data corresponding to the multiple discharge physical parameters based on voltage condition parameters corresponding to the multiple discharge physical parameters includes: determining boost parameters corresponding to the multiple discharge physical parameters when the voltage condition parameters include an initial applied voltage; determining multiple target applied voltages corresponding to the multiple discharge physical parameters based on the initial applied voltage and boost parameters corresponding to the multiple discharge physical parameters; and determining discharge signal data corresponding to the multiple discharge physical parameters based on the multiple target applied voltages corresponding to the multiple discharge physical parameters.

[0053] This embodiment describes the specific steps for determining the discharge signal data corresponding to the multiple discharge physical parameters based on the voltage condition parameters corresponding to the multiple discharge physical parameters.

[0054] This involves the initial applied voltage, which is the starting voltage value applied to the switchgear equipment. The starting voltage varies depending on the physical parameters of the discharge.

[0055] This involves boost parameters, which are specific parameters used to control the gradual increase of voltage, including boost gradient and boost time interval.

[0056] This involves multiple target applied voltages, which are specific voltage values ​​reached by gradually increasing the applied voltage based on the boost parameters, starting from the initial applied voltage. These target applied voltages are used to analyze the characteristics and development patterns of partial discharge at different voltage levels. For example, if the initial applied voltage is 10kV and the boost gradient is 2kV, then the target applied voltages could be 12kV, 14kV, 16kV, etc., until a set limit voltage is reached.

[0057] Given voltage condition parameters including the initial applied voltage, the boost parameters corresponding to multiple discharge physical parameters are determined, and multiple target applied voltages are determined based on these parameters. This enables the analysis of the partial discharge development process of switchgear equipment at each stage through a step-by-step voltage boosting method. This allows for the comprehensive capture of the performance of different discharge physical parameters at each stage, improving the accuracy and reliability of partial discharge detection.

[0058] As an optional embodiment, based on the multiple target applied voltages corresponding to the multiple discharge physical parameters, the discharge signal data corresponding to the multiple discharge physical parameters is determined, including: for each of the multiple discharge physical parameters, determining the stage discharge data corresponding to the multiple target applied voltages, thereby obtaining multiple stage discharge data corresponding to the multiple discharge physical parameters; and determining the discharge signal data corresponding to the multiple discharge physical parameters based on the multiple stage discharge data corresponding to the multiple discharge physical parameters.

[0059] This embodiment describes the specific steps for determining discharge signal data corresponding to the multiple discharge physical parameters by applying voltages to multiple targets based on the multiple discharge physical parameters.

[0060] This involves discharge data in multiple stages, which are characteristic data of partial discharge collected for each discharge physical parameter under different target applied voltages.

[0061] The discharge data obtained through the above steps reflect the characteristic changes of partial discharge in switchgear equipment under different voltage conditions, enabling a more detailed observation of the development law of discharge phenomena, thereby helping to improve the accuracy and reliability of partial discharge detection.

[0062] As an optional embodiment, based on the initial applied voltage and boost parameters corresponding to the multiple discharge physical parameters, a plurality of target applied voltages corresponding to the multiple discharge physical parameters are determined, including: when the boost parameters include a boost gradient, determining the limit voltage corresponding to the multiple discharge physical parameters; and determining the plurality of target applied voltages corresponding to the multiple discharge physical parameters based on the limit voltages corresponding to the multiple discharge physical parameters, the initial applied voltage, and the boost gradient.

[0063] This embodiment describes the specific steps for determining multiple target applied voltages corresponding to multiple discharge physical parameters based on the initial applied voltage and boost parameters corresponding to multiple discharge physical parameters.

[0064] This involves the voltage ramp-up gradient, which is the specific value at which the voltage increases each time during partial discharge detection. For example, if the ramp-up gradient is 2kV, then the voltage increases by 2kV each time. It is used to control the rate at which the voltage gradually increases, so as to study the characteristics of partial discharge at different voltage levels.

[0065] This involves a limit voltage, which is the highest voltage value allowed to be applied during partial discharge detection. The limit voltage is typically preset based on the withstand voltage capability of the switchgear equipment to ensure the safety and effectiveness of the detection. For example, if the limit voltage is 30kV, then the voltage applied to the switchgear equipment will ultimately not exceed 30kV.

[0066] By gradually increasing the voltage and setting a safety upper limit (limit voltage), the characteristics and development laws of partial discharge can be comprehensively studied at different voltage levels, while ensuring the safety and effectiveness of the detection.

[0067] As an optional embodiment, the discharge detection result corresponding to the switchgear equipment is determined based on the discharge signal data corresponding to multiple discharge physical parameters, including: when the multiple discharge signal data includes optical signal data, electromagnetic signal data, and sound signal data, determining the optical signal intensity characteristics corresponding to the optical signal data; determining the electromagnetic signal intensity characteristics corresponding to the electromagnetic signal data; determining the sound signal intensity characteristics corresponding to the sound signal data; and determining the discharge detection result corresponding to the switchgear equipment based on the optical signal intensity characteristics, electromagnetic signal intensity characteristics, and sound signal intensity characteristics.

[0068] This embodiment describes the specific steps for determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to multiple discharge physical parameters.

[0069] This involves optical signal data, which is the specific value and characteristics of the optical signal generated during the partial discharge process, collected by an optical sensor, including the intensity, wavelength distribution, and number of photons of the optical signal.

[0070] This involves electromagnetic signal data, which is the specific value and characteristics of the high-frequency electromagnetic wave signal generated during the partial discharge process, collected by an ultra-high frequency sensor, including the amplitude, frequency distribution, and time delay of the electromagnetic signal.

[0071] This involves sound signal data, which is the specific value and characteristics of the mechanical vibration signal generated during partial discharge, collected by an ultrasonic sensor, including the amplitude, frequency distribution, and propagation time of the sound signal.

[0072] This involves optical signal intensity characteristics, which are characteristic parameters extracted from optical signal data to characterize the strength of partial discharge optical signals, such as the average intensity, peak intensity, and photon count rate of the optical signal.

[0073] This involves electromagnetic signal strength characteristics, which are characteristic parameters extracted from electromagnetic signal data to characterize the strength of partial discharge electromagnetic signals, such as the average amplitude, peak amplitude, and signal energy of the electromagnetic signal.

[0074] This involves sound signal intensity characteristics, which are feature parameters extracted from sound signal data to characterize the strength of partial discharge sound signals, such as the average amplitude, peak amplitude, and signal energy of the sound signal.

[0075] Through the above steps, in the case of multiple discharge signal data including optical signal data, electromagnetic signal data and sound signal data, the intensity characteristics corresponding to these signal data are determined respectively. By utilizing the unique characteristics of light, electromagnetic, and sound, discharge details can be captured from multiple dimensions, thereby helping to improve the accuracy of discharge detection of switchgear equipment.

[0076] As an optional embodiment, determining the optical signal intensity characteristics corresponding to the optical signal data includes: determining the photoelectric conversion parameters corresponding to the optical signal data; determining the optical radiation power corresponding to the optical signal data based on the photoelectric conversion parameters; and determining the optical signal intensity characteristics corresponding to the optical signal data based on the optical radiation power.

[0077] In this embodiment, specific steps for determining the optical signal intensity characteristics corresponding to optical signal data are described.

[0078] This involves photoelectric conversion parameters, which are parameters used to characterize the conversion efficiency and characteristics of an optical sensor in the process of converting light signals into electrical signals. For example, photon detection efficiency represents the proportion of received photons that the sensor can effectively convert into electrical signals, while photoelectric conversion gain represents the amount of charge converted from each photon.

[0079] This involves optical radiation power, which is the power of converting optical signal data generated during partial discharge into electrical signals.

[0080] By determining the photoelectric conversion parameters, the optical signal can be accurately converted into a measurable electrical signal, thus providing a data foundation for subsequent signal processing and analysis.

[0081] As an optional embodiment, determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to multiple discharge physical parameters includes: determining multiple signal association relationships corresponding to the switchgear equipment based on the discharge signal data corresponding to multiple discharge physical parameters, wherein the multiple signal association relationships represent the association relationships between the discharge signal data of the corresponding discharge physical parameter item and the discharge signal data of other discharge physical parameter items; and determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to multiple discharge physical parameters and the multiple signal association relationships.

[0082] This embodiment describes the specific steps for determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to multiple discharge physical parameters.

[0083] This involves multiple signal correlations, which are the interrelationships between discharge signal data of different discharge physical parameters (such as pulse current, ultra-high frequency, optical signals, ultrasonic signals, etc.). Examples include time correlation, intensity correlation, and frequency correlation.

[0084] By analyzing the intrinsic relationships between signals of different physical parameters, we can gain a more comprehensive understanding of the characteristics and development patterns of partial discharge, thereby further improving the accuracy and reliability of discharge detection.

[0085] Based on the above embodiments and optional embodiments, an optional implementation method is provided, which is described in detail below.

[0086] In related technologies, partial discharge is one of the main manifestations of insulation degradation in high-voltage electrical equipment. Prolonged presence of partial discharge can lead to a decline in the performance of insulation materials and even cause equipment breakdown. As a critical piece of equipment in the power system, the detection of partial discharge within switchgear is crucial for ensuring the safe operation of the power grid. However, existing technologies for discharge detection in switchgear suffer from inaccurate detection techniques.

[0087] There is currently no effective solution to the above problems.

[0088] In view of this, the optional embodiment of the present invention provides a discharge detection method for switchgear equipment, which can also be called a method for simultaneous detection of multiple physical quantities of partial discharge. It can effectively solve the technical problem of inaccurate discharge detection when performing discharge detection on switchgear equipment in related technologies.

[0089] First, a multi-physical quantity synchronous detection experimental platform for partial discharge was constructed to simulate partial discharge experiments in switchgear. This platform consists of a test transformer, a full-scale switchgear, a typical partial discharge defect model, and a multi-physical signal measurement system. It can simulate typical fault types in electrical equipment and, through Rogowski coils, UHF sensors, optical sensors, and acoustic emission sensors in conjunction with a digital acquisition card, achieves simultaneous acquisition of four channels: partial discharge pulse current signals, UHF signals, optical signals, and ultrasonic signals. A 1:2000 RC voltage divider was used in the test circuit to measure the applied voltage on the test chamber. A 9.96nF standard capacitor with a withstand voltage of 100kV was selected for the coupling capacitor. All electrical connection lines in the circuit used high-voltage wires treated with corona discharge, and all signal transmission lines used 50Ω double-shielded cables.

[0090] Specifically, this includes constructing a partial discharge acquisition system and designing and fabricating three typical discharge defect models.

[0091] For constructing a partial discharge acquisition system, the measurement system of the test platform consists of six parts: a high-frequency current sensor, a transient ground voltage sensor, an ultra-high frequency sensor, an optical sensor, an ultrasonic sensor, and a digital acquisition card, which are used to simultaneously measure and statistically analyze various physical signals generated when partial discharge occurs.

[0092] Three typical discharge defect models were designed and fabricated, including corona discharge, surface discharge, and floating discharge, to explore the characteristics, development patterns, and severity of partial discharge under different types and intensities, providing a reference for the detection of partial discharge and the assessment of insulation status.

[0093] Then, experimental studies were conducted on three forms of partial discharge: corona discharge, surface discharge, and suspension discharge. By collecting four physical signals generated during the partial discharge process—pulse current, light, ultra-high frequency, and ultrasound—the effectiveness and sensitivity range of different physical detection methods were compared and explored. The distribution range of phase-resolved partial discharge (PRPD) spectral characteristics and statistical characteristic parameters of different types of partial discharge at various development stages were analyzed, laying the foundation for the identification of partial discharge types and their severity.

[0094] Specifically, this includes: conducting experimental research on three forms of partial discharge—corona discharge, surface discharge, and suspended discharge—collecting four physical signals generated during the partial discharge process: pulse current, light, ultra-high frequency (UHF) waves, and ultrasound waves. The effectiveness and sensitivity range of different physical detection methods are compared and explored. At the start of the experiment, corresponding defect electrodes are arranged and the test circuit is connected. A gradient voltage ramp method is used to apply pressure to each insulation defect to effectively obtain discharge data for each of the three partial discharge types at various stages of discharge development. A calibration pulse generator is used to conduct discharge quantity calibration experiments on the pulse current measurement system in the laboratory to obtain calibration coefficients for the three discharge types. This invention uses only the apparent discharge quantity obtained under the pulse current method as a reference, introducing three concepts—relative optical radiation power, relative electromagnetic radiation power, and relative acoustic power—to describe the strength of the three physical signals (light, electromagnetic waves, and ultrasound) generated by partial discharge and the activity level of the discharge phenomenon. The relative power of the three physical signals is calculated.

[0095] The following is a detailed description.

[0096] S1. Construct an experimental platform for simultaneous detection of multiple physical quantities of partial discharge;

[0097] Figure 2 This is a schematic diagram of a simulated switchgear partial discharge test platform in an optional embodiment of the present invention, as shown below. Figure 2 As shown.

[0098] The platform consists of a test transformer, a full-scale switchgear, a typical partial discharge defect model, and a multi-physics signal measurement system. It can simulate typical fault types in electrical equipment and, through Rogowski coils, UHF sensors, optical sensors, and acoustic emission sensors in conjunction with a digital acquisition card, achieve simultaneous acquisition of four channels: partial discharge pulse current signals, UHF signals, optical signals, and ultrasonic signals. A 1:2000 RC voltage divider is used in the test circuit to measure the applied voltage on the test chamber. The coupling capacitor is a 9.96nF standard capacitor with a withstand voltage of 100kV. All electrical connection lines in the circuit use high-voltage wires treated with corona discharge, and all signal transmission lines use 50Ω double-shielded cables.

[0099] The construction of the experimental platform for simultaneous detection of multiple physical quantities of partial discharge mainly consists of the following two sub-steps:

[0100] S11. Construct a partial discharge acquisition system. The measurement system of the test platform consists of six parts: a high-frequency current sensor, a transient ground voltage sensor, an ultra-high frequency sensor, an optical sensor, an ultrasonic sensor, and a digital acquisition card. It is used to simultaneously measure and statistically analyze the various physical signals generated when partial discharge occurs.

[0101] Among them, the high-frequency current sensor uses a Rogowski coil, with a detection bandwidth of 460kHz to 120MHz and a sensitivity of 10V / A.

[0102] The capacitively coupled (TEV) sensor has an operating bandwidth of 27MHz, a center frequency of 13MHz, and a signal gain of 40dB within its bandwidth. The frequency distribution of the partially discharged TEV signals measured in actual tests is within 15MHz, with the main portion within 5MHz. Therefore, this sensor can meet the requirements for measuring partially discharged signals in switchgear.

[0103] The optical sensor uses a silicon photomultiplier (SiPM) as its foundation, forming an optical sensing array with peripheral circuitry. A single 3.16mm × 3.16mm SiPM sensor within the array is used, containing approximately 13,000 single-photon avalanche diodes, effectively responding to optical signals in the 300-700mm wavelength range. The sensor's maximum allowable current is 10mA, and with an external 30V bias power supply, the photon detection efficiency is 50%, and the dark count rate is 150kHz / mm. 2 The residual pulse is 5%. The sensor's output is connected to a filtering and detection module, which enables the partial discharge optical signal to effectively retain amplitude and phase information even at the relatively low sampling rate of the acquisition card.

[0104] The UHF sensor employs a double-helix UHF sensor with a receiving antenna operating bandwidth of 300MHz-1.5GHz and a standing wave ratio (VSWR) of <1.5:1 within the bandwidth. Due to the high frequency of the original UHF signal, a detection and amplification module is connected at the rear end of the antenna, ensuring that only the amplitude and phase information of the original discharge pulse signal are retained.

[0105] The signal amplification gain within the bandwidth is 40dB, and the in-band jitter and insertion loss after amplification and detection are less than 1dB. The sensitivity of the detection device can reach -35dBm or higher, which can meet the measurement requirements of UHF partial discharge signals.

[0106] The ultrasonic sensor is a narrowband acoustic emission sensor with a detection frequency range of 20kHz-180kHz, a resonant frequency of 80kHz, and a peak sensitivity of over -75dB. Its performance parameters meet relevant requirements. A preamplifier (PAS) is connected to the sensor's rear end, with a response frequency of 1.3kHz-1.2MHz, adjustable gain in 3 levels, and an adjustable bandpass filter in 4 levels. Partial discharge ultrasonic signals were measured using the 40dB gain setting and the 20kHz-120kHz bandpass filter setting.

[0107] In addition to the optical sensor, the selected high-frequency current sensor, ultra-high frequency sensor and ultrasonic sensor are all commonly used sensor types in current partial discharge detection systems, and they meet the performance parameter requirements of the partial discharge test standards. They are representative to a certain extent, so the influence of the sensor performance itself on the multi-physical signals is not involved.

[0108] In addition, in order to simultaneously acquire multiple partial discharge signals and obtain the phase information of the discharge pulse in a timely manner, an 8-channel digital acquisition card was used as an oscilloscope, and a multi-physics signal measurement and data analysis system was constructed in conjunction with a graphical programming (LabVIEW) development platform.

[0109] The digital acquisition card has an 80MS / s sampling rate and displays waveforms via digital oscilloscope software connected to a computer. When the acquisition card interface is connected to the LabVIEW port, the data output by the acquisition card will be digitally filtered by the analysis software, then converted into phase-resolved partial discharge (PRPD) mode, and the PRPD spectrum will be displayed in real time on the interactive interface. After the preset acquisition time count stops and the acquisition data processing is completed, the analysis software will save the data to the specified path.

[0110] S12. Design and fabricate three typical discharge defect models, including corona discharge, surface discharge, and floating discharge, to explore the characteristics, development patterns, and severity of partial discharge under different types and intensities, providing a reference for the detection of partial discharge and the assessment of insulation status.

[0111] Figure 3 This is a schematic diagram of a corona discharge defect model in an optional embodiment of the present invention, as shown below. Figure 3 As shown, the electrode consists of two parts: a needle electrode and a plate electrode. The rod-shaped portion of the needle electrode has a diameter of 6mm, and the tip is conical with a length of 20mm and an equivalent radius of 50μm. The plate electrode has a diameter of 100mm, a thickness of 10mm, and a chamfer diameter of 5mm. The electrode spacing between the tip of the needle electrode and the upper surface of the plate electrode is 15mm. In switchgear equipment, corona discharge is often caused by sharp points on the inner wall of the equipment cavity or on the high-voltage conductor due to poor manufacturing processes.

[0112] Figure 4 This is a schematic diagram of a surface discharge defect model in an optional embodiment of the present invention, as shown below. Figure 4 As shown, the electrode consists of two parts: a rod and a plate, made of brass material, and an epoxy resin plate. The rod electrode has a diameter of 6 mm; the plate electrode parameters are the same as those in the corona discharge model; the epoxy resin plate is 2 mm thick and 80 mm in diameter, tightly clamped between the rod and plate electrodes. In switchgear equipment, surface discharge often occurs at the gas-solid interface of the insulating medium, such as the surface of a basin-type insulator.

[0113] Figure 5 This is a schematic diagram of a suspended discharge defect model in an optional embodiment of the present invention, as shown below. Figure 5 As shown, the electrode consists of three parts: a rod, a plate, and a suspension body, all made of brass material and supported by an epoxy resin structure. The suspension body electrode has a diameter of 4 mm, a length of 10 mm, a cone angle of 50° pointing upwards at the electrode tip, and an equivalent radius of curvature of 50 μm. The suspension body electrode is electrically suspended between the rod and plate electrodes by the epoxy resin support, with an upper electrode spacing of 2 mm and a lower electrode spacing of 5 mm. In switchgear equipment, levitation discharge is often caused by loose screws or other fasteners on the high-voltage conductor.

[0114] S2. A multi-physical information (MPI) experimental scheme for partial discharge research is proposed. Experimental studies are conducted on three forms of partial discharge: corona discharge, surface discharge, and suspension discharge. By collecting four physical signals generated during the partial discharge process—pulse current, light, ultra-high frequency, and ultrasound—the detection effectiveness and sensitivity range of different physical detection methods are compared and explored. The distribution range of PRPD spectral characteristics and statistical characteristic parameters of different types of partial discharge at various development stages is analyzed, laying the foundation for the identification of partial discharge types and their severity.

[0115] S2 specifically includes the following steps:

[0116] S21. Conduct experimental research on three forms of partial discharge: corona discharge, surface discharge, and suspension discharge. Collect four physical signals generated during the partial discharge process: pulse current, light, ultra-high frequency, and ultrasound. Compare and explore the detection effectiveness and sensitivity range of different physical detection methods.

[0117] The sensor position should be kept unchanged during the partial discharge test.

[0118] At the start of the experiment, the high-frequency current sensor was connected to the grounding wire at the bottom of the experimental chamber; the optical sensor was placed in the slot of the flange at the observation window; the ultra-high frequency sensor was placed 10 cm outside the high-voltage bushing of the experimental chamber, with its antenna facing the bottom of the bushing; and the ultrasonic sensor was fixed to the outer wall of the experimental chamber by magnetic clamps, keeping the positions of each sensor unchanged.

[0119] Because the partial discharge initiation voltages of the three defect models in the experiment were different, the initiation voltages of the same partial discharge measured by different physical measurement methods were also different. Therefore, in order to determine the voltage rise gradient of the applied voltage in the experiment, it is necessary to measure the discharge detection initiation voltages of various partial discharge types and their corresponding physical signals. The project adopted the approach of measuring the partial discharge initiation voltage (PDIV) 10 times and taking the average value as the final result. The discharge initiation voltages of the three insulation defects caused by partial discharge under different physical measurement methods were measured. Table 1 shows the initiation discharge voltages (peak values) of different types of partial discharge under the four measurement methods provided in this application.

[0120] Table 1

[0121]

[0122] Because the partial discharge phenomenon is relatively weak at the discharge initiation voltage, the number of pulses is small, and it is easily affected by electromagnetic noise, statistical analysis under these conditions is meaningless and prone to large errors. Therefore, the experiment needs to appropriately increase the voltage based on the initiation voltage of various partial discharges as the initial value of the applied voltage. The final determined initial values ​​of the applied voltage for the experiment are: 34kV for corona discharge, 14kV for surface discharge, and 30kV for suspension discharge.

[0123] Since corona discharge is relatively harmful in actual production switchgear equipment and almost never causes through-discharge, its insulation degradation is mainly reflected in the decrease in insulation performance caused by gas decomposition due to discharge. Therefore, the upper limit of the external voltage for corona discharge is set at 60kV when a huge corona sound occurs and the output voltage of the test transformer is clipped. The other two types of discharge are pressurized until the insulation medium breaks down.

[0124] S22. At the start of the test, the corresponding defect electrodes are first arranged and the test circuit is connected. The gradient voltage method is used to apply pressure to each insulation defect for testing. Figure 6 This is a flowchart of a discharge detection method for switchgear equipment in an optional embodiment of the present invention, as shown below. Figure 6 As shown, this method effectively acquires discharge data for the three types of partial discharge at various stages of discharge development.

[0125] After the test preparation was completed, the output voltage of the test transformer was first increased to the initial value of the applied voltage determined in the pre-experiment, and then allowed to stand still for 1 minute to allow the partial discharge to stabilize before starting the discharge data measurement. During data acquisition, the acquisition card obtains a large number of data points within the acquisition time and processes them using analysis software (including digital filtering of environmental noise, construction of phase-resolved time series, calculation of characteristic parameters, etc.), requiring a certain amount of computation time to complete the calculation and save the data. This time length depends on the complexity of the data and is usually around 10 minutes. Therefore, to ensure the consistency of the timing of each gradient voltage increase and to simulate the continuous degradation of the switchgear insulation, the next voltage increase operation was performed 15 minutes after the completion of the gradient voltage increase, and the resting operation and data acquisition were repeated. After the last set of discharge data was acquired, the voltage of the test object was depressurized, and the next control group test was conducted.

[0126] S23. Using a calibration pulse generator, a discharge calibration test was conducted on the pulse current measurement system in the laboratory to obtain calibration coefficients for three discharge types. Figure 7 This is a graph showing the calibration results of pulse amplitude and discharge quantity for partial discharge measurement using the pulse current method in an optional embodiment of the present invention, as shown below. Figure 7 As shown, the apparent discharge quantity obtained by the pulse current method is used as a reference only. The concepts of relative optical radiation power, relative electromagnetic radiation power, and relative acoustic power are introduced to describe the strength of the three physical signals (light, electromagnetic waves, and ultrasound) generated by partial discharge and the activity level of the discharge phenomenon. The relative power of the three physical signals is then calculated.

[0127] (1) Relative optical radiation power:

[0128] Optical measurement methods for partial discharge utilize optical sensors to receive the optical signals generated during the partial discharge process and convert them into electrical signals for output. This project employs silicon photomultipliers (SiPMs) as optical devices, which contain numerous avalanche diodes (APDs) derived from silicon doping. When a sufficiently biased voltage is applied, the avalanche diodes trigger Geiger avalanches upon receiving external photons, thereby generating photocurrent.

[0129] When the SiPM is working normally, the APD has two operating states: state "1" when a photon is detected and state "0" when no photon is detected. The response of the SiPM is composed of the responses of all APD units, therefore, the expression is as follows:

[0130]

[0131] in:

[0132] Q represents the output charge of the SiPM / C;

[0133] q represents the charge generated by the APD unit / C;

[0134] N ph The number of photons incident on the surface of the device;

[0135] M represents the number of avalanche diodes in the SiPM;

[0136] PDE stands for photon detection efficiency of SiPM.

[0137] For the optical signal detection of partial discharge, before the discharge forms a breakdown arc, the intensity of the radiated light is far from sufficient to cause the SiPM response to saturate, that is:

[0138] N ph ·PDE<<M

[0139] At this point:

[0140]

[0141] Then the formula It can be simplified to:

[0142] Q≈q·N ph ·PDE

[0143] Taking the derivative of both sides of the above equation with respect to time t, we get:

[0144]

[0145] in:

[0146] I is the current intensity output by the photoelectric sensor;

[0147] k is a proportionality constant;

[0148] Ф in The incident luminous flux is expressed in lm.

[0149] Under a given light source, light power and luminous flux can be directly converted using a coefficient V.

[0150] Based on the attenuation characteristics of light in the propagation medium, the power of the light source decreases to its original value at a distance L. times, where k ξ Let ρ be the absorption coefficient of the medium for photons, ρ be the gas density, and μ be the proportionality coefficient. Under the experimental conditions of the project, this attenuation coefficient is a constant. Therefore, from the above analysis, it can be seen that the output response amplitude of SiPM is proportional to the instantaneous power of the partial discharge's optical radiation.

[0151] In PRPD statistical mode, each discharge pulse is retained as an amplitude point. Generally, the waveform of a partial discharge pulse can be abstracted as a standard Gaussian pulse. Therefore, the integral of the optical signal during a single discharge process is the discharge pulse amplitude A. L The product of the standard Gaussian pulse integral value δ.

[0152] In this case, the optical radiation power P of the partial discharge optics Can be written as:

[0153]

[0154] Since the constant k is usually L Because it is difficult to measure and calculate, the relative optical radiation power P is defined. L for:

[0155]

[0156] in:

[0157] t0 is the starting time point;

[0158] k L Let L be the optical attenuation coefficient at a distance of L.

[0159] (2) Relative electromagnetic radiation power:

[0160] When partial discharge occurs, a charge of magnitude q flows through the gap between the positive and negative electrodes l within one pulse duration, forming an instantaneous current. Such a current element is generally called a Hertzian dipole, where j is the ordinal unit and w represents the angular frequency. Establishing a three-dimensional Cartesian coordinate system with the dipole's center of symmetry as the origin O, a differential vector is obtained at point D, which is a distance r from O.

[0161]

[0162] in:

[0163] It is a unit vector along the z-axis in a rectangular coordinate system;

[0164] μ ex ρ is the magnetic permeability of the medium;

[0165] The wavenumber in an unbounded medium;

[0166] ε is the space permittivity.

[0167] For ease of calculation, if θ represents the angle between r and the positive z-axis, then... Let represent the angle between the x-axis and the line connecting the projection points of O and D onto the xOy plane, rotated counterclockwise. Then the spherical coordinates of point D can be written as...

[0168] In spherical coordinates, the magnetic field strength of a dipole for:

[0169]

[0170] in:

[0171] Represents the magnetic flux density vector;

[0172] Represents the vector differential operator;

[0173] These represent unit vectors in spherical coordinates, pointing radially (r), polarly (θ), and azimuthally, respectively. The direction;

[0174] These represent the differential vectors of the radial and polar components of the local vector potential, respectively.

[0175] I represents the current source strength.

[0176] The electric field can then be obtained. for:

[0177]

[0178] in:

[0179]

[0180] in:

[0181] It is the intrinsic wave impedance of a uniform plane electromagnetic wave in free space.

[0182] Since the sensor is very close to the discharge source in this experiment, much smaller than the wavelength of the ultra-high frequency signal, it can be considered that the sensor is located in the near-field region of the dipole, i.e., e -jβr ≈1. Integrating, we get:

[0183]

[0184] Therefore, the electromagnetic radiation energy flux density (i.e., the Poynting vector) at the sensor is:

[0185]

[0186] Since the energy flux density generated by the radiation source is uniform across the entire sphere of radius r, the total electromagnetic radiation power of the discharge source is a surface integral of the sphere, and the result is still proportional to the square of I.

[0187] Based on the principle of UHF antennas receiving electromagnetic waves, the relationship between the induced voltage U on the sensor and the electric field strength E at that location is as follows:

[0188] U = k rel E

[0189] in:

[0190] k rel These parameters are determined by the antenna's own characteristics and location.

[0191] It can be seen that the electromagnetic radiation power generated by partial discharge is proportional to the square of the induced voltage on the sensor.

[0192] Similarly, in the PRPD statistical model, the waveform of the partial discharge pulse can be abstracted as a standard Gaussian pulse. Therefore, the integral of the square of the ultra-high frequency signal of the partial discharge source during a single discharge process is the square of the discharge pulse amplitude. The integral value of the standard Gaussian pulse δ G The product of.

[0193] In this case, due to θ, Since parameters such as r and β are constant, the optical radiation power P of partial discharge is... EM Can be written as:

[0194]

[0195] Since the constant k is usually EM Because it is difficult to measure and calculate, the relative electromagnetic radiation power P is defined. UHF for:

[0196]

[0197] (3) Relative acoustic power:

[0198] The ultrasonic signal detected by the acoustic emission sensor on the outer wall of the equipment cavity is generated by a partial discharge source, propagates through sulfur hexafluoride (SF6) gas, and is transmitted through the cavity wall. With the relative positions of the discharge source and the sensor fixed, the transmission path of the partial discharge ultrasonic signal is constant. Therefore, the acoustic power received by the sensor has a fixed attenuation factor compared to the acoustic power released by the discharge source itself. The acoustic energy E received by the acoustic emission sensor... AE The calculation method is as follows:

[0199]

[0200] in:

[0201] V i (t) represents the t-th instantaneous voltage signal output by the sensor.

[0202] Therefore, the relative acoustic power P can be used AE To quantify the power of the mechanical vibrations generated during partial discharge:

[0203]

[0204] The above optional implementation methods can achieve at least the following beneficial effects:

[0205] (1) Compared with related technologies, the present invention determines multiple discharge physical parameters based on the discharge detection type parameters of the switchgear equipment. Since different types of partial discharge may exhibit different characteristics on different physical parameters, comprehensive consideration of multiple physical parameters can capture multi-dimensional information of discharge characteristics. Furthermore, by determining the voltage condition parameters corresponding to the multiple discharge physical parameters, it is helpful to understand the occurrence and development characteristics of discharge events of the switchgear equipment under the corresponding voltage condition parameters. Thus, by comprehensively considering the discharge signal data of each discharge physical parameter under the corresponding voltage condition parameters, the accuracy of discharge detection of the switchgear equipment can be effectively improved, thereby solving the technical problem of inaccurate discharge detection when performing discharge detection on the switchgear equipment in related technologies.

[0206] (2) Compared with related technologies, the present invention determines the boost parameters corresponding to multiple discharge physical parameters under the condition of voltage condition parameters including the initial applied voltage, and determines multiple target applied voltages based on these parameters. This enables the analysis of the partial discharge development process of switchgear equipment at each stage by gradually increasing the voltage, thereby comprehensively capturing the performance of different discharge physical parameters at each stage and improving the accuracy and reliability of partial discharge detection.

[0207] (3) Compared with related technologies, this invention analyzes the intrinsic relationship between different physical parameter signals to gain a more comprehensive understanding of the characteristics and development law of partial discharge, thereby further improving the accuracy and reliability of discharge detection.

[0208] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0209] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0210] Example 2

[0211] According to an embodiment of the present invention, an apparatus for implementing the above-described discharge detection method for switchgear equipment is also provided. Figure 8 This is a structural block diagram of a switchgear discharge detection device according to an embodiment of the present invention, such as... Figure 8 As shown, the device includes: an acquisition module 802, a first determination module 804, a second determination module 806, a third determination module 808, and a fourth determination module 810. The device will be described in detail below.

[0212] The module 802 is used to acquire discharge detection type parameters corresponding to the switchgear equipment; the first determining module 804 is connected to the acquisition module 802 and is used to determine multiple discharge physical parameters corresponding to the discharge detection type parameters; the second determining module 806 is connected to the first determining module 804 and is used to determine voltage condition parameters corresponding to the multiple discharge physical parameters, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; the third determining module 808 is connected to the second determining module 806 and is used to determine discharge signal data corresponding to the multiple discharge physical parameters based on the voltage condition parameters corresponding to the multiple discharge physical parameters; the fourth determining module 810 is connected to the third determining module 808 and is used to determine the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the multiple discharge physical parameters.

[0213] It should be noted that the above-mentioned acquisition module 802, first determination module 804, second determination module 806, third determination module 808 and fourth determination module 810 correspond to steps S102 to S110 in the method for detecting discharge of switchgear equipment. The multiple modules and the corresponding steps are the same in terms of implementation examples and application scenarios, but are not limited to the content disclosed in the above embodiment 1.

[0214] Example 3

[0215] According to another aspect of the present invention, an electronic device is also provided, comprising: a processor; and a memory for storing processor-executable instructions, wherein the processor is configured to execute instructions to implement the switchgear equipment discharge detection method of any of the above embodiments.

[0216] Example 4

[0217] According to another aspect of the present invention, a computer-readable storage medium is also provided, which, when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to perform the switchgear equipment discharge detection method described above.

[0218] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0219] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0220] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0221] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0222] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0223] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0224] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for detecting discharge in switchgear equipment, characterized in that, include: Obtain the discharge detection type parameters corresponding to the switchgear equipment; Determine multiple discharge physical parameters corresponding to the discharge detection type parameters; Determine the voltage condition parameters corresponding to the plurality of discharge physical parameters, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; Based on the voltage condition parameters corresponding to the plurality of discharge physical parameters, determine the discharge signal data corresponding to the plurality of discharge physical parameters respectively; Based on the discharge signal data corresponding to the multiple discharge physical parameters, the discharge detection result corresponding to the switchgear equipment is determined.

2. The method according to claim 1, characterized in that, The step of determining the discharge signal data corresponding to each of the plurality of discharge physical parameters based on the voltage condition parameters corresponding to the plurality of discharge physical parameters includes: When the voltage condition parameters include the initial applied voltage, determine the boost parameters corresponding to the plurality of discharge physical parameters respectively; Based on the initial applied voltage and boost parameters corresponding to the plurality of discharge physical parameters, determine the plurality of target applied voltages corresponding to the plurality of discharge physical parameters; Based on the multiple target applied voltages corresponding to the multiple discharge physical parameters, discharge signal data corresponding to the multiple discharge physical parameters are determined.

3. The method according to claim 2, characterized in that, The step of determining discharge signal data corresponding to the plurality of discharge physical parameters based on the applied voltages to the plurality of targets corresponding to the plurality of discharge physical parameters includes: For each of the plurality of discharge physical parameters, determine the stage discharge data corresponding to the applied voltage of the plurality of targets, and obtain the plurality of stage discharge data corresponding to the plurality of discharge physical parameters. Based on the discharge data of the multiple stages corresponding to the multiple discharge physical parameters, discharge signal data corresponding to the multiple discharge physical parameters are determined.

4. The method according to claim 2, characterized in that, The step of determining multiple target applied voltages corresponding to the multiple discharge physical parameters based on the initial applied voltage and boost parameters corresponding to the multiple discharge physical parameters includes: When the boost parameters include a boost gradient, determine the limit voltage corresponding to each of the plurality of discharge physical parameters; Based on the limit voltage corresponding to the plurality of discharge physical parameters, the initial applied voltage and the boost gradient, a plurality of target applied voltages corresponding to the plurality of discharge physical parameters are determined.

5. The method according to claim 1, characterized in that, The step of determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the multiple discharge physical parameters includes: In the case of multiple discharge signal data including optical signal data, electromagnetic signal data, and sound signal data, determine the optical signal intensity characteristics corresponding to the optical signal data; Determine the electromagnetic signal intensity characteristics corresponding to the electromagnetic signal data; Determine the sound signal intensity characteristics corresponding to the sound signal data; Based on the optical signal intensity characteristics, the electromagnetic signal intensity characteristics, and the sound signal intensity characteristics, the discharge detection result corresponding to the switchgear equipment is determined.

6. The method according to claim 5, characterized in that, The determination of the optical signal intensity characteristics corresponding to the optical signal data includes: Determine the photoelectric conversion parameters corresponding to the optical signal data; Based on the photoelectric conversion parameters, determine the optical radiation power corresponding to the optical signal data; Based on the optical radiation power, the optical signal intensity characteristics corresponding to the optical signal data are determined.

7. The method according to any one of claims 1 to 6, characterized in that, The step of determining the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the multiple discharge physical parameters includes: Based on the discharge signal data corresponding to the multiple discharge physical parameters, multiple signal association relationships corresponding to the switchgear equipment are determined, wherein the multiple signal association relationships represent the association relationships between the discharge signal data of the corresponding discharge physical parameter item and the discharge signal data of other discharge physical parameter items. Based on the discharge signal data corresponding to the multiple discharge physical parameters and the correlation relationships of the multiple signals, the discharge detection result corresponding to the switchgear equipment is determined.

8. A discharge detection device for switchgear equipment, characterized in that, include: The acquisition module is used to acquire the discharge detection type parameters corresponding to the switchgear equipment; The first determining module is used to determine multiple discharge physical parameters corresponding to the discharge detection type parameters; The second determining module is used to determine the voltage condition parameters corresponding to the plurality of discharge physical parameters, wherein the voltage condition parameters are used to control the voltage applied to the switchgear equipment; The third determining module is used to determine the discharge signal data corresponding to the plurality of discharge physical parameters based on the voltage condition parameters corresponding to the plurality of discharge physical parameters respectively; The fourth determining module is used to determine the discharge detection result corresponding to the switchgear equipment based on the discharge signal data corresponding to the multiple discharge physical parameters.

9. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the switchgear equipment discharge detection method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device is able to perform the switchgear equipment discharge detection method as described in any one of claims 1 to 7.

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