CN114720908A - Power grid equipment electric leakage monitoring system and method - Google Patents
Power grid equipment electric leakage monitoring system and method Download PDFInfo
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- CN114720908A CN114720908A CN202210649310.0A CN202210649310A CN114720908A CN 114720908 A CN114720908 A CN 114720908A CN 202210649310 A CN202210649310 A CN 202210649310A CN 114720908 A CN114720908 A CN 114720908A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/16—Magnets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/56—Testing of electric apparatus
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Abstract
本发明涉及漏电监测领域，具体涉及一种电网设备漏电监测系统及方法，配电柜柜体内设置隔板将柜内空间分隔为设备区和监测控制区，监测控制区内配置漏电监测处理器；漏电检测设备包括若干电流互感器、若干支撑杆、亮度传感器和摄像头，支撑杆第一端通过固定板安装在隔板上，第二端与电流互感器连接；漏电监测处理器分别与电流互感器、亮度传感器、摄像头电连接，漏电监测处理器根据漏电情况发出不同级别告警。本发明实现漏电检测的精确定位，结构简单，使用方便，利用磁铁的吸附力进行支撑杆固定，方便支撑杆安装拆卸和移动固定等，操作简单，适合推广应用。根据不同漏电情况发出不同告警，尽量不影响用户用电，同时也避免灾害蔓延。
The invention relates to the field of leakage monitoring, in particular to a system and method for monitoring leakage of power grid equipment. A partition is arranged in a cabinet of a power distribution cabinet to separate the space in the cabinet into an equipment area and a monitoring and control area, and a leakage monitoring processor is arranged in the monitoring and control area; The leakage detection equipment includes a number of current transformers, a number of support rods, a brightness sensor and a camera. The first end of the support rod is mounted on the partition through a fixed plate, and the second end is connected to the current transformer; the leakage monitoring processor is respectively connected with the current transformer. , The brightness sensor and the camera are electrically connected, and the leakage monitoring processor issues different levels of alarms according to the leakage situation. The invention realizes accurate positioning of leakage detection, has simple structure and is convenient to use, utilizes the adsorption force of magnets to fix the support rod, facilitates the installation, disassembly and movement of the support rod, and is simple in operation and suitable for popularization and application. Different alarms are issued according to different leakage conditions, so as not to affect the user's power consumption as much as possible, and at the same time to avoid the spread of disasters.
Description
Technical Field
The invention relates to the field of electric leakage monitoring, in particular to an electric leakage monitoring system and method for power grid equipment.
Background
In the field of electric power, monitoring of electric leakage of power grid equipment is an important part, and if the electric leakage condition of the power grid equipment occurs, a fire disaster can be caused in serious conditions, so that the power consumption of a user is influenced. The current electric leakage monitoring to the switch board is inconvenient carries out electric leakage accurate positioning, for example only monitors whether have the electric leakage on the cabinet body to lead to maintenance duration long, reduce work efficiency, influence the user and use electricity and experience.
Disclosure of Invention
In order to solve the problems, the invention provides the electric leakage monitoring system for the power grid equipment, which can conveniently position an electric leakage position and improve the maintenance efficiency.
In a first aspect, the technical scheme of the invention provides a power grid equipment leakage monitoring system, which comprises a power distribution cabinet, wherein a partition plate is arranged in a cabinet body of the power distribution cabinet, the space in the cabinet is divided into an equipment area and a monitoring control area, an electric device and leakage detection equipment are arranged in the equipment area, and a leakage monitoring processor is arranged in the monitoring control area;
the leakage detection device comprises a plurality of current transformers and a plurality of support rods, the current transformers correspond to the support rods one by one, the first ends of the support rods are arranged on the partition plates, and the second ends of the support rods are connected with the current transformers; the wiring of the distribution device to be monitored penetrates through the current transformer; the partition board is provided with a slide rail, the side of the support rod close to the first end of the support rod is provided with a slide block and a fixed plate, the slide block is connected with the slide rail in a sliding way, and the fixed plate is used for fixing the support rod on the partition board; the fixing plates comprise a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are respectively positioned on two sides of the sliding block, the first fixing plate close to the current transformer is fixedly arranged on the supporting rod, a through hole is formed in the second fixing plate far away from the current transformer, and the through hole is sleeved on the supporting rod, so that the second fixing plate is detachably connected with the supporting rod; magnets are arranged in the first fixing plate and the second fixing plate; inner concave parts are reserved on the inner side surfaces of the first fixing plate and the second fixing plate and are matched with the sliding block, so that the first fixing plate and the second fixing plate can be tightly attached to the partition plate;
the electric leakage detection equipment further comprises a brightness sensor and a camera;
the electric leakage monitoring processor is respectively electrically connected with the current transformer, the brightness sensor and the camera, acquires an electric leakage signal through the current transformer, acquires a spark signal through the brightness sensor, sends different levels of alarm according to the electric leakage signal and the spark signal, and controls the camera to take a picture when receiving the spark signal.
Further, the supporting rod is a telescopic rod.
Furthermore, the slide rail is of a T-shaped structure, and three end parts of the slide rail of the T-shaped structure are provided with circular dismounting holes for dismounting the support rod.
Further, the slider is H type structure.
Further, the luminance sensor includes a plurality of sensors arranged in order from top to bottom on the partition plate.
Furthermore, a plurality of vent holes and threading holes are formed in the partition plate.
Furthermore, an electronic switch is arranged on a power supply bus of the power distribution cabinet and is electrically connected with the electric leakage monitoring processor.
In a second aspect, a technical solution of the present invention provides a power grid equipment leakage monitoring method, including the following steps:
monitoring whether the current transformer detects a leakage signal;
if the leakage signal is detected, monitoring the duration time of the leakage signal and the leakage duration times;
if the duration time of the electric leakage signal is less than a first time threshold value and the electric leakage duration times are not more than 1 time, sending a low-level alarm; otherwise, sending a high-level alarm, and cutting off the power supply bus through the electronic switch after the duration time of the electric leakage signal exceeds a second time threshold or the electric leakage duration times exceeds a time threshold;
monitoring whether the brightness sensor detects a spark;
if the spark is detected, a high-level alarm is sent out, meanwhile, a camera is started to shoot, and the power supply bus is cut off through the electronic switch.
The system and the method for monitoring the electric leakage of the power grid equipment have the following beneficial effects: set up a plurality of current transformer, can carry out leakage detection to a plurality of distribution devices, realize leakage detection's accurate positioning, current transformer passes through the bracing piece to be connected on the baffle simultaneously, simple structure, and convenient to use is applicable to the distribution device of any position. Wherein the bracing piece sets up the fixed plate that has magnet, and it is fixed to utilize the adsorption affinity of magnet to carry out the bracing piece, makes things convenient for the bracing piece installation to dismantle with remove fixedly etc. easy operation is fit for popularizing and applying. In addition, different alarms are sent according to different electric leakage conditions, so that the electricity consumption of a user is not influenced as much as possible, and the spread of disasters is avoided.
Drawings
For a clearer explanation of the embodiments or technical solutions of the prior art of the present application, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power grid device leakage monitoring system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a partition structure of a power grid device leakage monitoring system according to an embodiment of the present invention.
Fig. 3 is a schematic view of a slider structure of a power grid device leakage monitoring system according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fixing plate of the electrical leakage monitoring system of the power grid device according to an embodiment of the present invention.
Fig. 5 is a schematic view of a structure inside a supporting rod and a sliding rail in the electrical leakage monitoring system of the electrical grid device according to the first embodiment of the present invention (a fixing plate is not shown).
In the figure, 1-cabinet body, 2-equipment area, 3-monitoring control area, 4-partition board, 5-leakage monitoring processor, 6-current transformer, 7-support rod, 8-brightness sensor, 9-slide rail, 10-circular dismounting hole, 11-ventilation hole, 12-slide block, 13-first fixing plate, 14-second fixing plate and 15-threading hole.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example one
As shown in fig. 1-5, this embodiment provides a power grid equipment leakage monitoring system, including the switch board, set up baffle 4 in the switch board cabinet body 1, separate the cabinet inner space for equipment district 2 and monitoring control district 3, the equipment of installation in equipment district 2 is installed electrical components, for example circuit breaker, connecting wire etc. and configuration leakage monitoring processor 5 in monitoring control district 3, and leakage monitoring processor 5 is connected with the leakage detection equipment electricity, receives the leakage detection signal and reports to the police. The leakage detection equipment is used for detecting leakage of the power distribution device and detecting whether the power distribution device has leakage or not. The leakage monitoring processor 5 sends out alarms of different levels when receiving the leakage signal, can give an alarm locally, and simultaneously transmits the alarm signal to a far end. And an electronic switch is arranged on a power supply bus of the power distribution cabinet, the electronic switch is electrically connected with the electric leakage monitoring processor 5, and when a high-level alarm occurs, the power supply bus is cut off in time to stop power supply.
The electric leakage detection equipment of this embodiment includes a plurality of current transformer 6 and a plurality of bracing piece 7, realizes the electric leakage detection of a plurality of distribution devices, and current transformer 6 and bracing piece 7 one-to-one, 7 first ends of bracing piece are installed on baffle 4, and the second end is connected with current transformer 6. The current transformer 6 is electrically connected with the electric leakage monitoring processor 5, the wiring of the distribution device to be monitored penetrates through the current transformer 6, when electric leakage occurs, the electric leakage current is detected by the current transformer 6 and is transmitted to the electric leakage monitoring processor 5, and the electric leakage signal is determined by the electric leakage monitoring processor 5 through amplification, noise reduction and other processing, so that an alarm is sent. During specific implementation, can set up two baffles 4 in the cabinet body 1, the space in the middle is equipment district 2, and the space of both sides is monitoring control district 3, disposes electric leakage monitoring treater 5 in one of them monitoring control district 3, all erection bracing pole 7 on two baffles 4 to connect current transformer 6, detect the distribution device electric leakage condition of both sides.
In addition to the generation of leakage current and the occurrence of sparks in the event of electric leakage, in view of this, the electric leakage detection apparatus of the present embodiment is further provided with a luminance sensor 8 and a camera, and the luminance sensor 8 and the camera are electrically connected to the leakage processor, respectively. When spark occurs, the light is detected by the brightness sensor 8, and the leakage detection processor is informed to trigger the camera to take a picture. In order to improve the detection accuracy and the maintenance efficiency, the luminance sensor 8 of the present embodiment includes a plurality of sensors, which are sequentially disposed on the partition plate 4 from top to bottom, to detect the luminance of each region. The camera can be installed on the cabinet door. According to the embodiment, on one hand, the leakage current is detected through the current transformer 6, on the other hand, the spark is detected through the brightness sensor 8, the detection characteristics are comprehensive, and the detection effectiveness is improved.
The current transformer 6 of this embodiment is installed on baffle 4 through bracing piece 7, and for the distribution device of adaptation every position, bracing piece 7 sets up to the telescopic link, adjusts length as required to the adaptation detects the position. In addition, the support rod 7 can also move along the partition plate 4 to adjust the position, and specifically, a slide rail 9 is arranged on the partition plate 4 and is connected with the support rod 7 in a sliding manner to enable the support rod 7 to move in a sliding manner. For the convenience is adjusted in all directions, slide rail 9 sets up to T type structure, and is corresponding, sets up slider 12 and fixed plate near its first end side on the bracing piece 7, and slider 12 is H type structure, and the suit is on slide rail 9, moves along slide rail 9, and the fixed plate supplies bracing piece 7 to fix on baffle 4. In this embodiment, three ends of the slide rail 9 of the T-shaped structure are provided with circular dismounting holes 10 for dismounting the support rod 7.
For the convenience of fixing the supporting rod 7, the fixing plate of the embodiment includes a first fixing plate 13 and a second fixing plate 14, the first fixing plate 13 and the second fixing plate 14 are respectively located on two sides of the sliding block 12, the first fixing plate 13 close to the current transformer 6 is fixedly mounted on the supporting rod 7, a through hole is arranged on the second fixing plate 14 far away from the current transformer 6, the through hole is sleeved on the supporting rod 7, and the second fixing plate 14 is detachably connected with the supporting rod 7. Configuration magnet in first fixed plate 13 and the second fixed plate 14, through magnetic adsorption, make first fixed plate 13 and the mutual attraction of second fixed plate 14 fix, fixed mode is simple and convenient, and it is all more convenient to dismantle and install, improves work efficiency.
The inner side surfaces of the first fixing plate 13 and the second fixing plate 14 of the embodiment are provided with concave parts which are matched with the slide block 12 with the H-shaped structure, so that the first fixing plate 13 and the second fixing plate 14 can be tightly attached to the partition plate 4, and the fixing firmness is improved. When the support rod is used, the first end of the support rod 7 penetrates through the circular dismounting hole 10, the support rod 7 is moved to a proper position, the middle part of the sliding block 12 of the H-shaped structure is positioned in the sliding rail 9, the inner side surfaces of two sides are attached to the partition plate 4, the inner side surface of the first fixing plate 13 is tightly attached to the partition plate 4, the through hole of the second fixing plate 14 is sleeved on the support rod 7, the second fixing plate 14 is moved to enable the inner side surface of the second fixing plate to be tightly attached to the partition plate 4, and the support rod 7 is fixed on the partition plate 4 through magnet adsorption between the first fixing plate 13 and the second fixing plate 14.
The setting of this embodiment a plurality of ventilation holes 11 and through wires hole 15 improve ventilation cooling effect, conveniently walk the line.
Example two
On the basis of the first embodiment, the second embodiment provides a power grid equipment leakage monitoring method, which includes the following steps.
S1, monitoring whether the current transformer detects a leakage signal;
s2, if the leakage signal is detected, monitoring the duration time of the leakage signal and the leakage duration times;
s3, if the duration time of the leakage signal is less than the first time threshold value and the leakage duration times are not more than 1, sending a low-level alarm; otherwise, sending a high-level alarm, and cutting off the power supply bus through the electronic switch after the duration time of the electric leakage signal exceeds a second time threshold or the electric leakage duration times exceeds a time threshold;
s4, monitoring whether the brightness sensor detects sparks;
and S5, if the spark is detected, a high-level alarm is given out, meanwhile, a camera is started to take a picture, and the power supply bus is cut off through the electronic switch.
The method sends different levels of alarms according to the leakage condition, and alarms workers maintain in time without cutting off the power supply when the low level alarms, so that the power supply of users is prevented from being influenced, and the power supply is cut off in time when the high level alarms, so that the disaster is prevented from being expanded.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited thereto, and any modifications and variations which can be made by those skilled in the art without departing from the spirit of the present invention shall fall within the scope of the present invention.
Claims (8)
1. A power grid equipment leakage monitoring system is characterized by comprising a power distribution cabinet, wherein a partition board is arranged in a cabinet body of the power distribution cabinet to divide the space in the cabinet into an equipment area and a monitoring control area, an electric device and leakage detection equipment are arranged in the equipment area, and a leakage monitoring processor is arranged in the monitoring control area;
the leakage detection device comprises a plurality of current transformers and a plurality of support rods, the current transformers correspond to the support rods one by one, the first ends of the support rods are arranged on the partition plates, and the second ends of the support rods are connected with the current transformers; the wiring of the distribution device to be monitored penetrates through the current transformer; the partition board is provided with a slide rail, the side of the support rod close to the first end of the support rod is provided with a slide block and a fixed plate, the slide block is connected with the slide rail in a sliding way, and the fixed plate is used for fixing the support rod on the partition board; the fixing plates comprise a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are respectively positioned on two sides of the sliding block, the first fixing plate close to the current transformer is fixedly arranged on the supporting rod, a through hole is formed in the second fixing plate far away from the current transformer, and the through hole is sleeved on the supporting rod, so that the second fixing plate is detachably connected with the supporting rod; magnets are arranged in the first fixing plate and the second fixing plate; the inner side surfaces of the first fixing plate and the second fixing plate are provided with concave parts which are matched with the sliding blocks, so that the first fixing plate and the second fixing plate can be tightly attached to the partition plate;
the electric leakage detection equipment further comprises a brightness sensor and a camera;
the electric leakage monitoring processor is respectively electrically connected with the current transformer, the brightness sensor and the camera, acquires an electric leakage signal through the current transformer, acquires a spark signal through the brightness sensor, sends different levels of warning according to the electric leakage signal and the spark signal, and controls the camera to take pictures when receiving the spark signal.
2. The electrical grid equipment leakage monitoring system of claim 1, wherein the support rod is a telescoping rod.
3. The electric leakage monitoring system for the power grid equipment as claimed in claim 2, wherein the sliding rail is of a T-shaped structure, and three end parts of the sliding rail of the T-shaped structure are provided with circular dismounting holes for dismounting the supporting rod.
4. The electrical grid equipment leakage monitoring system of claim 3, wherein the slider is of an H-shaped configuration.
5. The electrical grid device leakage monitoring system according to claim 4, wherein the brightness sensor comprises a plurality of brightness sensors, and the brightness sensors are arranged on the partition plate from top to bottom.
6. The electrical grid device leakage monitoring system of claim 5, wherein the partition is provided with a plurality of ventilation holes and threading holes.
7. The electrical leakage monitoring system for electrical grid equipment according to claim 6, wherein an electronic switch is disposed on a power supply bus of the power distribution cabinet, and the electronic switch is electrically connected to the electrical leakage monitoring processor.
8. A power grid equipment electric leakage monitoring method is characterized by comprising the following steps:
monitoring whether the current transformer detects a leakage signal;
if the leakage signal is detected, monitoring the duration time of the leakage signal and the leakage duration times;
if the duration time of the electric leakage signal is less than a first time threshold value and the electric leakage duration times are not more than 1 time, sending a low-level alarm; otherwise, sending a high-level alarm, and cutting off the power supply bus through the electronic switch after the duration time of the electric leakage signal exceeds a second time threshold or the electric leakage duration times exceeds a time threshold;
monitoring whether the brightness sensor detects a spark;
if the spark is detected, a high-level alarm is sent out, meanwhile, a camera is started to shoot, and the power supply bus is cut off through the electronic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210649310.0A CN114720908A (en) | 2022-06-10 | 2022-06-10 | Power grid equipment electric leakage monitoring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210649310.0A CN114720908A (en) | 2022-06-10 | 2022-06-10 | Power grid equipment electric leakage monitoring system and method |
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| CN114720908A true CN114720908A (en) | 2022-07-08 |
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| CN202210649310.0A Pending CN114720908A (en) | 2022-06-10 | 2022-06-10 | Power grid equipment electric leakage monitoring system and method |
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| CN216529887U (en) * | 2021-10-27 | 2022-05-13 | 赵素英 | Electric power cabinet with electric leakage alarming function |
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| CN216253551U (en) * | 2021-11-24 | 2022-04-08 | 飞利信信息安全技术(杭州)有限公司 | Meter information monitoring device for transformer substation |
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