Multiplexed photoelectric sensing device for internal discharge location and spectral information of power equipment

Abstract

Disclosed is an electric power equipment internal discharge position and spectral information multiplexing photoelectric sensing device, in a bipolar plate structure, a split light guide array is inserted into the interior of the electric power equipment to collect the discharge light beams from the interior of the electric power equipment, a microlens homogenizing plate is arranged at the bottom of the split light guide array, the upper surface of the microlens homogenizing plate is etched with a microlens array for focusing light signals to form parallel light beams; a fiber panel is arranged at the bottom of the microlens homogenizing plate, the upper panel is a central-symmetrical planar multi-lobe structure to group the parallel light beams, the lower panel is connected to the upper panel through a fiber bundle, and the lower panel is a rectangular structure to group the parallel light beams from the upper panel to form photon signals; a photoelectric array includes a silicon photomultiplier array and a surface spectral coating arranged on the silicon photomultiplier array, and the multiplexing two-dimensional photoelectric array constructs a sparse spectral sensing line array based on the photon signals to generate spectral information and constructs a multi-normal intensity sensing line array to obtain position information.

Description

Technical Field

[0001] This invention belongs to the field of power equipment internal discharge monitoring technology, and in particular, it is a photoelectric sensing device that multiplexes the internal discharge location and spectral information of power equipment. Background Technology

[0002] Effective detection and early warning of abnormal discharges within power equipment are of significant importance for ensuring the safe operation of equipment and power systems. However, recent application experience shows that conventional detection methods based on current, electromagnetic, and acoustic waves are affected by intermittent field interference, complex signal paths, and the multi-source nature of faults, leading to decreased detection (monitoring) confidence and frequent false alarms, misreporting, and missed alarms. Their effectiveness in quantitative assessment, fault tracing, and rapid location is also less than ideal. With the increasing complexity of power grid systems and wireless communication standards, these problems and the limitations of conventional detection methods will become increasingly prominent.

[0003] In recent years, optical detection methods for partial discharge have gained attention and application in the field of condition monitoring due to their good anti-interference ability, high sensitivity, and intuitive detection, leading to the development of optical discharge detection, localization, and diagnostic methods. However, existing optical detection methods still have shortcomings in detection, localization, and diagnostic performance when applied to insulation discharge detection within equipment. Specifically: 1. Built-in optical signal acquisition devices lack systematic optical path design, resulting in large blind spots and poor detection performance; 2. Localization methods rely on ultraviolet optical imaging systems, which are costly and bulky, making them inflexible for application within power equipment; 3. Discharge pattern recognition and severity assessment rely on the statistical characteristics of the signal, making on-site testing difficult and unable to achieve real-time judgment of discharge type and severity; 4. The inability to simultaneously perform localization and spectral recognition multiplexing detection results in a cumbersome detection system with insufficient practical reference value for the safe operation and fault diagnosis of power equipment. Therefore, this invention proposes a discharge location information and spectral information multiplexing sensing device to improve the practical value of optical detection methods in insulation detection within power equipment. This device can achieve ultra-wide field-of-view directional collection of discharge optical signals and simultaneously realize discharge fault localization and spectral recognition.

[0004] The information disclosed in the background section is only intended to enhance the understanding of the background of the present invention, and therefore may contain information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention proposes a photoelectric sensing device that reuses discharge location and spectral information inside power equipment. This device can achieve ultra-wide field-of-view directional collection of discharge light signals and simultaneously realize fault location and multispectral identification.

[0006] The objective of this invention is achieved through the following technical solution: a photoelectric sensing device for multiplexing discharge location and spectral information inside power equipment includes,

[0007] A segmented optical guide array is inserted into the interior of electrical equipment to collect discharge beams from inside the equipment. The segmented optical guide array includes...

[0008] The light-absorbing frame includes a central axis and multi-lobed light-guiding fan blades radiating outwards from the central axis.

[0009] A glass body is fitted between the light guide fan blades and forms multiple photon focusing surfaces. The discharge beam is focused by the glass body and projected onto the upper surface of the microlens light homogenizing plate to form multiple independent optical signals. After being processed by the microlens light homogenizing plate and transmitted by the optical fiber panel, the multiple independent optical signals are received by the photoelectric array and generate the orientation information of the discharge power source inside the power equipment.

[0010] A microlens light homogenizer is disposed at the bottom of the segmented light guide array, and the upper surface of the microlens light homogenizer is etched with a microlens array for focusing the light signal to form a parallel beam.

[0011] An optical fiber panel, disposed at the bottom of the microlens light-diffusing plate, includes,

[0012] The upper panel has a centrally symmetrical planar multi-lobed structure to group the parallel beams.

[0013] The lower panel is connected to the upper panel via an optical fiber bundle. The lower panel has a rectangular structure to group parallel light beams from the upper panel to form photonic signals.

[0014] The optoelectronic array is a multiplexed two-dimensional optoelectronic array, which is disposed below the lower panel to receive the photon signal. The optoelectronic array includes a silicon photomultiplier tube array and a progressive filter coating or filter, or multiple filter coatings or filters, arranged in the row direction on the surface of the silicon photomultiplier tube array. Each column of the multiplexed two-dimensional optoelectronic array is used to acquire discharge sparse spectrum information, and each row is used to acquire discharge position information.

[0015] In the aforementioned photoelectric sensing device that reuses internal discharge location and spectral information of power equipment, the glass material is fused silica glass or polymethyl methacrylate glass.

[0016] In the aforementioned photoelectric sensing device that reuses internal discharge location and spectral information of power equipment, the segmented photoguide array determines the array structure, number of segments, and light-receiving area based on the sensitivity, field of view, uniformity, and accuracy of the sensing device.

[0017] In the aforementioned photoelectric sensing device that reuses internal discharge location and spectral information of power equipment, the microlens homogenizing plate is made of fused silica glass or polymethyl methacrylate glass.

[0018] In the aforementioned photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment, the microlens light-diffusing plate and the mounting flange are sealed with a side surface sealing ring.

[0019] In the aforementioned photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment, the upper panel is an N-divided circular structure formed by uniform radiation from the center, where N is a positive integer greater than 2.

[0020] In the aforementioned photoelectric sensing device that reuses discharge location and spectral information inside power equipment, the upper surface of the silicon photomultiplier tube array is coated with a surface spectral film by ion beam sputtering.

[0021] Compared with the prior art, the present invention has the following advantages: the segmented optical guide array built into the power equipment improves the field of view and positioning capability of the optical measurement method, and the optical path structure can simultaneously realize the direction analysis and spectral decomposition of the discharge optical signal; the ultrasensitive two-dimensional spectral photoelectric array solves the problem of synchronous acquisition of directional signal and spectral signal. Attached Figure Description

[0022] Various other advantages and benefits of the present invention will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0023] In the attached diagram:

[0024] Appendix Figure 1 A schematic diagram of the optical path coupling of a photoelectric sensing device that multiplexes the discharge location and spectral information inside power equipment.

[0025] Appendix Figure 2 A schematic diagram of the installation and structure of a photoelectric sensing device that reuses discharge location and spectral information inside power equipment.

[0026] Appendix Figure 3 A schematic diagram of a lobe-shaped optical guide array structure for a photoelectric sensing device that multiplexes discharge location and spectral information inside power equipment.

[0027] Appendix Figure 4 A schematic diagram of a microlens light homogenizing plate structure for a photoelectric sensing device that multiplexes discharge location and spectral information inside power equipment.

[0028] Appendix Figure 5 A schematic diagram of the fiber optic panel structure of a photoelectric sensing device that multiplexes discharge location and spectral information inside power equipment.

[0029] Appendix Figure 6 A schematic diagram of the photoelectric array structure of a photoelectric sensing device that reuses the discharge location and spectral information inside power equipment.

[0030] The present invention will be further explained below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0031] The following will refer to the appendix. Figures 1 to 6 Specific embodiments of the invention will be described in more detail below. While specific embodiments of the invention are shown in the accompanying drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0032] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art will understand that different terms may be used to refer to the same component. This specification and claims do not distinguish components based on differences in terminology, but rather on differences in function. The terms "comprising" or "including" used throughout the specification and claims are open-ended and should be interpreted as "comprising but not limited to." The following descriptions are preferred embodiments for carrying out the invention; however, these descriptions are for the purpose of understanding the general principles of the specification and are not intended to limit the scope of the invention. The scope of protection of this invention is determined by the appended claims.

[0033] To facilitate understanding of the embodiments of the present invention, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings do not constitute a limitation on the embodiments of the present invention.

[0034] For better understanding, in one embodiment, such as Figures 1 to 6 As shown, a photoelectric sensing device for multiplexing discharge location and spectral information inside power equipment includes,

[0035] A segmented optical guide array 1 is inserted into the interior of a power device to collect a discharge beam from inside the device. The segmented optical guide array 1 includes...

[0036] The light-absorbing frame 7 includes a central axis and multi-lobed light-guiding fan blades radiating outwards from the central axis.

[0037] The glass body 8 is sleeved between the light guide fan blades and forms multiple photon focusing surfaces. The discharge beam is focused by the glass body 8 and projected onto the upper surface of the microlens light homogenizing plate to form multiple independent optical signals. After being processed by the microlens light homogenizing plate and transmitted by the optical fiber panel, the multiple independent optical signals are received by the photoelectric array and generate the orientation information of the discharge power source inside the power equipment.

[0038] A microlens homogenizer 2 is disposed at the bottom of the segmented light guide array 1, and a microlens array 9 for focusing the light signal to form a parallel beam is etched on the upper surface of the microlens homogenizer 2.

[0039] An optical fiber panel 3, disposed at the bottom of the microlens homogenizing plate 2, includes,

[0040] The upper panel 10 has a centrally symmetrical planar multi-lobed structure to group the parallel beams.

[0041] The lower panel 12 is connected to the upper panel 10 via an optical fiber bundle 11. The lower panel 12 has a rectangular structure to group parallel beams from the upper panel 10 to form photonic signals.

[0042] The photoelectric array 4 is a multiplexed two-dimensional photoelectric array 4, which is disposed below the lower panel 12 to receive the photon signal. The photoelectric array 4 includes a silicon photomultiplier tube array 13, and a progressive filter coating or filter, or multiple filter coatings or filters, arranged in the row direction on the surface of the silicon photomultiplier tube array. Each column of the multiplexed two-dimensional photoelectric array is used to acquire discharge sparse spectrum information, and each row is used to acquire discharge position information.

[0043] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge position and spectral information inside the power equipment, the surface spectral coating 14 receives the photon signal, constructs a sparse spectral sensing linear array laterally, performs spectral decomposition on each normal light signal, obtains multiple spectral bands of discharge information for discharge spectral identification, and the silicon photomultiplier tube array 13 receives the photon signal to construct a multi-normal intensity sensing linear array vertically, obtains the intensity of each normal light signal to obtain position information.

[0044] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge location and spectral information inside power equipment, the segmented light guide array 1 is a hemispherical structure.

[0045] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge position and spectral information inside the power equipment, the glass body 8 is a hemispherical fused silica glass.

[0046] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge location and spectral information inside power equipment, the segmented light guide array 1 determines the array structure, number of segments, and light-receiving area based on the sensitivity, field of view, uniformity, and accuracy of the sensing device.

[0047] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge location and spectral information inside power equipment, the microlens homogenizing plate 2 is made of fused silica glass.

[0048] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment, the connection between the microlens homogenizing plate 2 and the segmented light guide array 1 is sealed by a sealing ring 5, and the connection between the microlens homogenizing plate 2 and the fiber optic panel 3 is sealed by a sealing ring 5.

[0049] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment, the microlens homogenizing plate 2 and the fiber optic panel 3 are connected circumferentially via a sealing flange 6.

[0050] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment, the upper panel 10 is a six-equal-division circular structure formed by uniform radiation from the center.

[0051] In a preferred embodiment of the photoelectric sensing device for multiplexing discharge position and spectral information inside the power equipment, the upper surface of the silicon photomultiplier tube array 13 is coated with a surface spectral film 14 by ion beam sputtering.

[0052] In one embodiment, the photoelectric sensing device for multiplexing discharge location and spectral information inside power equipment includes a segmented light guide array 1, a microlens light homogenizing plate 2, an optical fiber panel 3, a photoelectric array 4, and mounting accessories. The working principle of the device is as follows: Figure 2 As shown: When partial discharge occurs inside the power equipment, each unit of the segmented optical guide array 1 collects the discharge beam in a specific direction and outputs multiple independent optical signals based on the direction of incoming light. The proportions of each signal follow a multi-normal projection distribution, containing the azimuth information of the discharge source. The microlens homogenizing plate 2 micro-focuses the transmitted light from the optical guide array to form a parallel uniform beam, efficiently and uniformly transmitting the photon signals collected by each segment of the optical guide to each region of the photoelectric array. The photoelectric array 4 can realize the positioning-spectral recognition multiplexing function, laterally constructing a sparse spectral sensing linear array with spectral intensity I(λ)=∑I(j). It performs spectral decomposition on each normal light signal to obtain spectral information of multiple discharge bands, realizing discharge spectral recognition. For example, the signal processing module is connected to the output end of the photoelectric array 4 to perform current-to-voltage conversion, voltage signal amplification, and signal analog-to-digital conversion to obtain optical pulse signals of different bands; calculates the intensity ratio of optical pulse signals of different bands, and determines the type and severity of partial discharge inside the power equipment based on the ratio.

[0053] The photoelectric array 4 is constructed vertically into a multi-normal intensity sensing linear array, with normal intensity I(n) = ∑I(i), to obtain the intensity of each normal light signal, for example, the position information of the discharge can be determined by the light angle.

[0054] In one embodiment, the segmented light guide array 1 is composed of PMMA (polymethyl methacrylate) and a light-absorbing frame 7. Its function is twofold: firstly, to enhance the field of view of optical monitoring; and secondly, to form multiple normal focal planes to collect and transmit the light signals in each normal direction. The segmented light guide array 1 comprehensively considers the characteristics of the discharge source, beam propagation characteristics, and the spatial structure of the power equipment. Its parameters and optimization indices are as follows: Figure 3 As shown, the array structure (n), number of lobes (N), and light-receiving area (A) are designed to meet the requirements of sensitivity (S), field of view (θ), uniformity (h), and accuracy (dn).

[0055] In one embodiment, the glass body is fused silica glass or polymethyl methacrylate (PMMA) glass. Further, the surface of the fused silica glass body is fluorinated, enhancing material compatibility.

[0056] In one embodiment, the microlens homogenizing plate 2 is made of fused silica glass, and its surface is etched with a microlens array 9. Its function is to micro-focus the transmitted light from the segmented light guide array 1 to form a parallel and uniform beam, so as to meet the numerical aperture requirements of the fiber optic panel 3 for the incident angle. In addition, the microlens homogenizing plate 2 also enhances the airtightness of the flange. The grouped fiber optic panel 3 is composed of a quartz fiber bundle 11 and a grouping connector. Its upper panel 10 groups the fiber bundle 11 with a planar multi-lobed structure, and the lower panel 12 groups the fiber bundle 11 with a rectangular dense structure. The fiber arrangement adopts a regular hexagonal arrangement to ensure its high fill rate and light transmittance. Its function is to efficiently transmit the photon signals collected by each lobe light guide to each area of ​​the optoelectronic array, avoid mutual interference between the light signals of each lobe, and improve the uniformity of light energy distribution on the optoelectronic device.

[0057] In one embodiment, the structural features of the segmented light guide array are determined by the average normal vector (n) of each segment, the number of segments (N), and the total light-receiving area (A); the composite optical field of view (FOV) of the segmented light guide array is not less than 30°; and the uniformity of the output illuminance (U) of the segmented light guide array within the field of view is not less than 0.2.

[0058] In one embodiment, the side of the microlens light-diffusing plate has a sealing groove and a sealing ring to ensure the sealing of the sensor flange installation.

[0059] In one embodiment, the photoelectric array 4 is formed by surface spectral coating 14 on the SiPM array using ion beam sputtering to form a multiplexed two-dimensional photoelectric array 4 (I(i,j)). Its function is to construct a sparse spectral sensing linear array with spectral intensity I(λ) = ∑I(j) to perform spectral decomposition on each normal light signal to obtain spectral information; and to construct a multi-normal intensity sensing linear array with normal intensity I(n) = ∑I(i) to obtain the intensity of each normal light signal and obtain position information.

[0060] In one implementation example, such as Figure 1 As shown, the segmented light guide array 1 is composed of fused silica glass and a light-absorbing frame 7. The surface of the fused silica glass body 8 is fluorinated to enhance material compatibility. Its function is twofold: firstly, to enhance the field of view of optical monitoring, and secondly, to form multiple normal focal planes to collect and transmit various normal light signals. Due to the good light transmittance, chemical stability, and insulation of the silica light guide, its lifespan can be matched with that of the power equipment. The microlens light homogenizer 2 is made of fused silica glass, and its surface is etched with a microlens array 9. Its function is to micro-focus the transmitted light from the segmented light guide array 1 to form a parallel and uniform beam to meet the numerical aperture requirements of the fiber optic panel 3 for the incident angle. In addition, the microlens light homogenizer 2 also enhances the hermeticity of the flange. The grouped fiber optic panel 3 consists of a quartz fiber bundle 11 and a grouping connector. The upper panel 10 groups the fiber bundle 11 in a planar multi-lobed structure, and the lower panel 12 groups the fiber bundle 11 in a rectangular dense structure. The fiber arrangement adopts a regular hexagonal arrangement to ensure its high fill rate and light transmittance. Its function is to efficiently transmit the photon signals collected by each lobe optical guide to each region of the optoelectronic array, avoid mutual interference between the light signals of each lobe, and improve the uniformity of light energy distribution on the optoelectronic device. The ultrasensitive optoelectronic array 4 uses ion beam sputtering technology to perform surface spectral coating 14 on the SiPM array to form a multiplexed two-dimensional optoelectronic array (I(i,j)). Its function is to construct a sparse spectral sensing linear array with spectral intensity I(λ)=∑I(j) to perform spectral decomposition on each normal light signal to obtain spectral information. On the other hand, it constructs a multi-normal intensity sensing linear array with normal intensity I(n)=∑I(i) to obtain the intensity of each normal light signal and obtain position information.

[0061] In one embodiment, the grouped fiber optic panel consists of a quartz fiber bundle and a grouping connector. The upper panel groups the fiber bundle using a planar multi-lobed structure, while the lower panel groups the fiber bundle using a rectangular dense structure. The function of the grouped fiber optic panel is to efficiently transmit the photon signals collected by each lobe of the optical guide to each region of the optoelectronic array, avoiding mutual interference between the lobe signals and ensuring uniform light energy distribution on the optoelectronic device. The optoelectronic array uses a silicon photomultiplier tube array, with a filter coating or cover filter on its surface, forming a multiplexed two-dimensional optoelectronic array. One dimension is used to construct a sparse spectral sensing linear array, and the other dimension is used to construct a position sensing linear array.

[0062] In another embodiment, the complete working principle of the device of the present invention is illustrated by taking the actual acquisition process of abnormal discharge optical signals in a typical power equipment GIS as an example:

[0063] Step 1: Device Design and Fabrication

[0064] A hemispherical array with 8 lobes and a light-receiving radius of 3 cm was selected. An 8*8 silicon photomultiplier tube (SIPM) array 13 was selected as the photoelectric sensor. The surface spectral coating 14 (IBS) of each column of the SiPM array was carried out by ion beam sputtering to achieve spectral resolution. The discharge light signals of the 8 columns were measured in the full wavelength range and at the wavelengths of 350nm, 400nm, 450nm, 500nm, 550nm, 600nm and 650nm respectively.

[0065] Step 2: Acquisition of spectral and directional signals of internal discharge in power equipment

[0066] A positioning-spectral recognition multiplexing detection device is integrated into a GIS simulation experimental platform. A needle plate defect is placed at the center of the guide rod of the bus section of the experimental platform to simulate partial discharge caused by burrs in actual equipment. The discharge quantity is calibrated to 50 pC. After the discharge occurs, each unit of the segmented light guide array 1 collects the discharge beam in an directional manner and outputs multiple independent optical signals based on the direction of the incoming light. The proportion of each signal follows a multi-normal projection distribution, including the orientation information of the discharge source. The microlens homogenizing plate 2 micro-focuses the transmitted light of the light guide array to form a parallel uniform beam, which efficiently and uniformly transmits the photon signals collected by each segment of the light guide to each region of the photoelectric array. The photoelectric array can realize positioning-spectral recognition multiplexing sensing. A sparse spectral sensing linear array is constructed laterally, with spectral intensity I(λ) = ∑I(j). The spectral information of each normal light signal is obtained by spectral decomposition. A multi-normal intensity sensing linear array is constructed vertically, with normal intensity I(n) = ∑I(i). The intensity of each normal light signal is obtained.

[0067] Step 3: Spectral identification and multi-normal localization of internal electrical discharge

[0068] Spectral identification: The signal processing module synchronously processes the multispectral decomposition signal output by the multiplexed sensor array, calculates the intensity ratio of light pulse signals in different bands, determines the type and severity of partial discharge, and finally diagnoses it as a 50pC needle-plate discharge, verifying the feasibility and accuracy of the device in the diagnosis of internal discharge in power equipment.

[0069] Multi-normal positioning: The intensity ratio between multiple normal optical signals is calculated, and the analytical solution for the discharge source orientation is obtained based on the proportion of the projected area of ​​light from different directions on the segmented optical guide. The positioning result deviates from the actual discharge position by 4 cm, verifying the feasibility and accuracy of the device for internal discharge positioning in power equipment.

[0070] A discharge spectral fingerprint database was constructed, and a spatial positioning functional was obtained through simulation. This functional was applied to a GIS simulation experimental platform, and the results showed that its spectral identification was accurate, its severity assessment based on apparent discharge quantity was reliable, and its positioning deviation could be controlled within 5 cm.

[0071] In one embodiment, the glass material is fused silica glass or polymethyl methacrylate glass.

[0072] In one embodiment, the segmented light guide array determines the array structure, number of segments, and light-receiving area based on the sensitivity, field of view, uniformity, and accuracy of the sensing device.

[0073] In one embodiment, the microlens light-diffusing plate is made of fused silica glass or polymethyl methacrylate glass.

[0074] In one embodiment, the microlens light-diffusing plate and the mounting flange are sealed with a side surface sealing ring.

[0075] In one embodiment, the upper panel is an N-divided circular structure formed by uniform radiation from the center, where N is a positive integer greater than 2.

[0076] Although embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art can make many other forms based on the guidance of this specification and without departing from the scope of protection of the claims of the present invention, and all of these are within the scope of protection of the present invention.

Claims

1. A photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment, characterized in that, It includes: A segmented optical guide array, which penetrates into the interior of electrical equipment to collect discharge beams from inside the equipment, comprises: A light-absorbing frame, comprising a central axis and multi-lobed light-guiding fan blades radiating outwards from the central axis; A glass body is fitted between the light guide fan blades and forms multiple photon focusing surfaces. The discharge beam is focused by the glass body and projected onto the upper surface of the microlens light homogenizing plate to form multiple independent optical signals. After being processed by the microlens light homogenizing plate and transmitted by the optical fiber panel, the multiple independent optical signals are received by the photoelectric array and generate the orientation information of the discharge power source inside the power equipment. A microlens light homogenizer is disposed at the bottom of the segmented light guide array, and the upper surface of the microlens light homogenizer is etched with a microlens array for focusing the light signal to form a parallel beam. An optical fiber panel, disposed at the bottom of the microlens light-diffusing plate, comprises: The upper panel is a centrally symmetrical planar multi-lobed structure for assembling the parallel beams; The lower panel is connected to the upper panel via an optical fiber bundle. The lower panel has a rectangular structure to group parallel light beams from the upper panel to form photonic signals. The optoelectronic array is a multiplexed two-dimensional optoelectronic array, which is disposed below the lower panel to receive the photon signal. The optoelectronic array includes a silicon photomultiplier tube array and a progressive filter coating or filter, or multiple filter coatings or filters, arranged in the row direction on the surface of the silicon photomultiplier tube array. Each column of the multiplexed two-dimensional optoelectronic array is used to acquire discharge sparse spectrum information, and each row is used to acquire discharge position information.

2. The photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment according to claim 1, characterized in that, The glass material is fused silica glass or polymethyl methacrylate glass.

3. The photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment according to claim 1, characterized in that, The segmented light guide array determines its structure, number of segments, and light-receiving area based on the sensitivity, field of view, uniformity, and accuracy of the sensing device.

4. The photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment according to claim 1, characterized in that, The microlens homogenizing plate is made of fused silica glass or polymethyl methacrylate glass.

5. The photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment according to claim 1, characterized in that, The microlens light-diffusing plate and the mounting flange are sealed with a side surface sealing ring.

6. The photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment according to claim 1, characterized in that, The upper panel is a circular structure divided into N equal parts, which is formed by uniformly radiating from the center, where N is a positive integer greater than 2.

7. The photoelectric sensing device for multiplexing discharge position and spectral information inside power equipment according to claim 1, characterized in that, The upper surface of the silicon photomultiplier tube array is coated with a surface spectral coating by ion beam sputtering.

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