Partial discharge long-time monitoring device

Abstract

The utility model discloses a partial discharge long-time monitoring device, which comprises a sensor assembly, a signal acquisition module, a diagnosis platform, a user data center, a power supply management module and a network module, the signal acquisition module acquires partial discharge signals, processes the partial discharge signals and outputs the partial discharge signals to the diagnosis platform, the diagnosis platform outputs partial discharge diagnosis and positioning results and sends the results to the user data center through the network module, and the power management module is used for supplying power; the device further comprises a movable cabinet, and pulleys are arranged at the bottom of the movable cabinet. According to the utility model, through the movable cabinet and an integrated partial discharge signal acquisition, identification, processing, diagnosis and positioning structure, a plurality of types of sensors can continuously monitor and position high-voltage equipment for 7 * 24 hours, pulleys at the bottom of the movable cabinet are combined with limiting blocks, so that the device is convenient to move and can be transferred by a single person.

Description

Technical Field

[0001] This utility model relates to the field of GIS partial discharge online monitoring technology, and in particular to a long-term partial discharge monitoring device. Background Technology

[0002] Insulation defects in high-voltage electrical equipment (such as GIS and transformers) can trigger partial discharge, which is a precursor signal of equipment failure. Traditional partial discharge monitoring relies on regular inspections by portable manual equipment or single-point monitoring by fixed online systems.

[0003] The existing technology has the following problems: portable devices cannot achieve 24 / 7 monitoring, and intermittent discharges are easy to miss; there is a lack of real-time early warning mechanism, resulting in delayed operation and maintenance response and limited scalability; most systems only support a single sensor type and cannot be compatible with multiple equipment scenarios such as transformers and cables; conventional fixed monitoring systems require reserved installation space in substations, are bulky, have low component integration, and portable detectors, although mobile, cannot monitor continuously and have limited functions. Utility Model Content

[0004] The purpose of this invention is to provide a long-term partial discharge monitoring device to solve the problems of partial discharge monitoring being unable to provide long-term monitoring and positioning, and the device being too large and inconvenient to move.

[0005] The technical problem solved by this utility model is addressed by the following technical solution:

[0006] A long-term partial discharge monitoring device includes: a sensor assembly, a signal acquisition module, a diagnostic platform, a user data center, a power management module, and a network module. The sensor assembly acquires partial discharge signals and outputs them to the signal acquisition module. The signal acquisition module processes the partial discharge signals and outputs them to the diagnostic platform. The diagnostic platform outputs partial discharge diagnosis and location results and sends them to the user data center through the network module. The power management module is used for power supply.

[0007] It also includes a movable cabinet, which is equipped with sensor components, signal acquisition modules, diagnostic platforms, power management modules and network modules, and the bottom of the movable cabinet is equipped with casters.

[0008] Preferably, the sensor assembly includes: an ultra-high frequency sensor, a high frequency sensor, and an ultrasonic sensor.

[0009] Preferably, the power management module includes: a main power supply, a UPS power supply, and a power management unit.

[0010] Preferably, the network module includes: an optical fiber unit, a network cable unit, and a Wi-Fi unit.

[0011] Preferably, the signal acquisition module includes: a noise reduction unit, a filtering unit, a conversion unit, and a storage unit.

[0012] Preferably, the diagnostic platform includes: a spectrum recognition unit, a signal positioning unit, and an alarm unit.

[0013] Preferably, the pulley is provided with a limit block.

[0014] Preferably, the movable cabinet includes: a top cover and a cabinet body, wherein the top cover is disposed on the cabinet body;

[0015] The cabinet is equipped with several layers of partitions.

[0016] Preferably, a push-pull rod is provided on the side of the cabinet.

[0017] Preferably, it also includes a display module, which is a display screen and buttons, and the display screen is disposed on the side of the cabinet.

[0018] This utility model utilizes a movable cabinet and an integrated structure for partial discharge signal acquisition, identification, processing, diagnosis, and location. Multiple types of sensors enable 24 / 7 uninterrupted monitoring and location of high-voltage equipment. The movable cabinet features casters at the bottom combined with limiting blocks, ensuring easy mobility and allowing for single-person transport. Modular partition design optimizes internal space, significantly reducing equipment size. The power management module ensures seamless switching during sudden outdoor power outages, maintaining continuous system operation. The network module supports multi-protocol remote transmission, allowing the user's data center to receive alarm information and location results in real time, greatly shortening defect response time. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the system connection of this utility model;

[0022] The markings in the diagram are as follows: 1-Sensor assembly; 2-Signal acquisition module; 3-Diagnostic platform; 4-User data center; 5-Power management module; 6-Network module; 7-Movable cabinet; 8-Pulley; 9-Limit block; 10-Top cover; 11-Cabinet body; 12-Push-pull rod; 13-Display module; 14-Ultra-high frequency sensor; 15-High frequency sensor; 16-Ultrasonic sensor; 17-Button; 18-Block; 19-Display screen. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0024] A long-term partial discharge monitoring device includes: a sensor assembly 1, a signal acquisition module 2, a diagnostic platform 3, a user data center 4, a power management module 5, and a network module 6. The sensor assembly 1 acquires partial discharge signals and outputs them to the signal acquisition module 2. The signal acquisition module 2 acquires and processes the partial discharge signals and outputs them to the diagnostic platform 3. The diagnostic platform 3 outputs partial discharge diagnosis and location results and sends them to the user data center 4 through the network module 6. The power management module 5 is used for power supply.

[0025] It also includes a movable cabinet 7, which contains a sensor assembly 1, a signal acquisition module 2, a diagnostic platform 3, a power management module 5, and a network module 6. The bottom of the movable cabinet 7 is equipped with casters 8.

[0026] To address the problems of existing technologies being unable to perform long-term monitoring and having excessively large and inconvenient equipment, this utility model discloses a long-term partial discharge monitoring device. It integrates the entire partial discharge detection system, from signal acquisition and signal processing to spectrum generation and signal diagnosis, into a movable cabinet 7. This enables 24 / 7 uninterrupted partial discharge monitoring, location, and alarm. The movable cabinet 7 not only reduces the size of the equipment but also facilitates its movement, making it convenient for portable monitoring throughout the entire site.

[0027] In a further embodiment of this example, sensor assembly 1 includes: ultra-high frequency sensor 1514, high frequency sensor 15, and ultrasonic sensor 16.

[0028] The ultra-high frequency sensor 1514 adopts a metal shielded cavity design with an equivalent height of ≥16mm. The ultrasonic sensor 16 supports dual-mode detection of contact and non-contact, with a sensitivity range of 0-70dB. After the ultrasonic sensor 16 detects an anomaly, it automatically triggers the high frequency sensor 15 to focus and sample. Through the verification method of acoustic-electric joint positioning, the problem of misjudgment by a single sensor can be solved.

[0029] In a further embodiment of this example, the power management module 5 includes: a 220VAC main power supply, a UPS power supply, and a power management unit. The power management unit is an SMU intelligent power control system that monitors current / voltage fluctuations in real time. When the SMU intelligent power control system detects a voltage drop, the network module 6 prioritizes saving the location data to local storage. When the main power supply is interrupted, it switches to UPS power supply. The UPS power supply supports continuous operation for ≥2 hours after a sudden power outage.

[0030] In a further embodiment of this invention, network module 6 includes: an optical fiber unit, a network cable unit, and a Wi-Fi unit. The optical fiber unit can achieve time synchronization of ≤10ns across the entire network and supports precise positioning.

[0031] In a further embodiment of this example, the signal acquisition module 2 includes: a noise reduction unit, a filtering unit, a conversion unit, and a storage unit. The noise reduction unit separates the noise signal through wavelet threshold denoising. The filtering unit is a 300-1500MHz bandpass filter. The conversion unit converts the analog signal into a digital signal and has an ADC sampling rate of 100MS / s. The storage unit stores the acquired partial discharge signal locally.

[0032] In a further implementation of this embodiment, the diagnostic platform 3 includes: a spectrum recognition unit, a signal positioning unit, and an alarm unit. The spectrum recognition unit can perform AI diagnosis based on a database of 2 million samples, outputting the defect type and confidence level. The signal positioning unit calculates the positioning error using a pulse arrival time difference algorithm, with an error of <30cm. After the alarm unit is triggered, the display screen 19 automatically displays the defect positioning map and processing suggestions.

[0033] In a further embodiment of this invention, a limit block 9 is provided on the pulley 8. The limit block 9 is designed to extend and retract vertically. When extended to a fixed length, the position of the movable cabinet 7 can be fixed. After locking, the movable mechanism can be easily pushed and pulled.

[0034] In a further embodiment of this invention, the movable cabinet 7 includes: a top cover 10 and a cabinet body 11, with the top cover 10 disposed on the cabinet body 11;

[0035] The cabinet 11 is equipped with several layers of partitions 18, which are used to arrange multiple devices without conflict, greatly reducing the space occupied by the devices.

[0036] In a further embodiment of this invention, a push-pull rod 12 is provided on the side of the cabinet 11. After the push-pull rod 12 is pulled open, a flat plate is provided. A tablet computer can be placed on the flat plate for viewing real-time PRPD maps and operation settings on site.

[0037] In a further embodiment of this invention, a display module 13 is also included. The display module 13 consists of a display screen 19 and a button 17. The display screen 19 is located on the side of the cabinet 11, and the button 17 is located below the display screen 19 for powering on and off.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A long-term partial discharge monitoring device, characterized in that, include: The system includes a sensor component, a signal acquisition module, a diagnostic platform, a user data center, a power management module, and a network module. The sensor component acquires partial discharge signals and outputs them to the signal acquisition module. The signal acquisition module processes the partial discharge signals and outputs them to the diagnostic platform. The diagnostic platform outputs partial discharge diagnosis and location results and sends them to the user data center through the network module. The power management module is used to supply power. It also includes a movable cabinet, which is equipped with sensor components, signal acquisition modules, diagnostic platforms, power management modules and network modules, and the bottom of the movable cabinet is equipped with casters.

2. The partial discharge long-term monitoring device according to claim 1, characterized in that, The sensor assembly includes: an ultra-high frequency sensor, a high frequency sensor, and an ultrasonic sensor.

3. The partial discharge long-term monitoring device according to claim 1, characterized in that, The power management module includes: main power supply, UPS power supply and power management unit.

4. The partial discharge long-term monitoring device according to claim 1, characterized in that, The network module includes: an optical fiber unit, a network cable unit, and a Wi-Fi unit.

5. The partial discharge long-term monitoring device according to claim 1, characterized in that, The signal acquisition module includes: a noise reduction unit, a filtering unit, a conversion unit, and a storage unit.

6. The partial discharge long-term monitoring device according to claim 1, characterized in that, The diagnostic platform includes: a map recognition unit, a signal positioning unit, and an alarm unit.

7. The partial discharge long-term monitoring device according to claim 1, characterized in that, Limit blocks are provided on the pulley.

8. The partial discharge long-term monitoring device according to claim 1, characterized in that, The movable cabinet includes a top cover and a cabinet body, wherein the top cover is disposed on the cabinet body; The cabinet is equipped with several layers of partitions.

9. The partial discharge long-term monitoring device according to claim 8, characterized in that, The cabinet has a push-pull rod on its side.

10. The partial discharge long-term monitoring device according to claim 8, characterized in that, It also includes a display module, which consists of a display screen and buttons, with the display screen located on the side of the cabinet.

Images