On-off alarm system of outlet pressing plate

Abstract

The utility model discloses a switching alarm system of an outlet pressure plate. A power supply is connected with a protection device through the outlet pressure plate. A first potential detector is arranged on one side of the outlet pressing plate, a second potential detector is arranged on the other side of the outlet pressing plate, the first potential detector and the second potential detector are connected with a potential difference detector, and the potential difference detector is connected with a light alarm and a sound alarm. According to the utility model, the potential difference of two sides of the outlet pressing plate, the rotation angle and the current condition in the protection device are respectively monitored in real time, and then an abnormal detection signal is fed back in real time through the sound alarm and the light alarm, so that the problem that an operator cannot find the wrong switching condition in time is solved; meanwhile, the position where a problem occurs is judged according to the color and flicker condition of light of the light alarm, and the inspection difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of relay protection technology, specifically relating to an alarm system for the activation and deactivation of an outlet pressure plate. Background Technology

[0002] With the continuous development of power grids, their safe operation has become paramount. Relay protection and automatic safety devices in power systems are crucial equipment for safe grid operation, providing protection for the safe and stable operation of the power system. The operation of the switch plates (also called "connecting plates") in these devices is a major aspect of equipment operation. Switch plates are used to connect or disconnect a circuit, serving as a bridge and link between relay protection and automatic safety devices and external or internal wiring, directly affecting the proper functioning of the equipment's protective functions and operational outputs. Power system accidents caused by erroneous switch plate operation occur frequently, seriously threatening the safe and stable operation of the power grid.

[0003] To ensure the correct status of the outlet pressure plate, routine and dynamic inspections of the pressure plate have traditionally relied on manual methods. However, this approach suffers from problems such as high workload, low efficiency, and poor data usability and reliability. Before putting the outlet pressure plate of the relay protection equipment into operation, the pressure plate potential must be measured to ensure safe and reliable operation. However, the risk of potential measurement is considerable, as power production accidents caused by incorrect meter settings or meter quality issues are frequent.

[0004] Chinese patent CN106841876B discloses a method for monitoring relay protection output pressure plates. This method acquires the input voltage signal from the lower connecting post of the protection trip and reclosing output pressure plates. When the input voltage signal indicates that the protection trip and reclosing output pressure plates are engaged, input status information is output; when the input voltage signal indicates that the protection trip and reclosing output pressure plates are not engaged or have a loose connection, no input voltage signal is output. The engagement status of the relay protection output pressure plates is monitored through this input status information. This method utilizes a single voltage conversion circuit to simultaneously determine whether an input is not engaged or has a loose connection. It can not only determine the engagement status of the protection device's trip and reclosing output pressure plates but also determine whether the pressure plates have a loose connection. Furthermore, it solves the problem that the voltage difference method cannot exclude the exception where both ends of the reclosing output pressure plate are positively energized.

[0005] Chinese patent CN112362996A discloses a centralized pressure plate outlet monitoring device, including a device housing, an outlet monitoring plug, a power supply plug, and a terminal block; the outlet monitoring plug includes a dual-position relay operating circuit, an outlet monitoring circuit, and a reset circuit; it can conveniently and intuitively monitor the pressure plate outlet circuit, avoiding the shortcomings of traditional testing methods and improving the accuracy of our relay protection personnel and operators in testing the outlet circuit.

[0006] However, current monitoring methods or devices for the outlet pressure plate only cover monitoring under one condition, and cannot handle monitoring the outlet pressure plate's engagement / disengagement status under multiple conditions. Furthermore, the monitoring results cannot be provided to operators or inspectors in real time. Since erroneous engagement / disengagement of the outlet pressure plate always occurs during operation, it is necessary to design a system that can provide real-time feedback on the outlet pressure plate's engagement / disengagement status, enabling operators to promptly identify and resolve problems. Summary of the Invention

[0007] To address the aforementioned technical problems, this utility model provides an alarm system for the engagement and disengagement of an outlet pressure plate. The system monitors the potential difference, rotation angle, and current in the protection device on both sides of the outlet pressure plate in real time. Abnormal detection signals are then fed back in real time through an audible alarm and a visual alarm. This solves the problem that operators cannot detect erroneous engagement or disengagement in a timely manner. At the same time, the location of the problem can be determined by the color and flashing of the light from the visual alarm, reducing the difficulty of inspection.

[0008] To achieve the above objectives, this utility model provides an alarm system for the activation and deactivation of an outlet pressure plate. The power supply is connected to the protection device via the outlet pressure plate. A first potential detector is provided on one side of the outlet pressure plate, and a second potential detector is provided on the other side. The first and second potential detectors are connected to a potential difference detector, which is connected to a light alarm and a sound alarm, respectively.

[0009] Preferably, the protection device is equipped with a current detector.

[0010] More preferably, the current detector is connected to both a light alarm and a sound alarm.

[0011] Preferably, the outlet pressure plates are distributed on the outlet pressure plate integration plate, and a video detection system is provided outside the outlet pressure plate integration plate.

[0012] More preferably, the video detection system consists of multiple cameras.

[0013] More preferably, the camera is connected to both a light alarm and a sound alarm via a video signal processor.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. Potential detectors are installed on both sides of the outlet pressure plate. The potential difference between the two sides is detected by a potential difference detector, and abnormal potentials are fed back to the light and sound alarms to alert the operator to check. A current detector is installed on the protection device to collect abnormal current information, and then the light and sound alarms are triggered. The rotation angle of the outlet pressure plate is detected by a video detection system. When the rotation angle of the outlet pressure plate changes abnormally, the signal is transmitted to the video signal processor, and then the light and sound alarms are triggered. This system can simultaneously monitor three common and different abnormal signals in real time and provide real-time feedback to the operator through light and sound. It can provide real-time feedback on abnormal situations during or at the end of operation, avoid long-term false activation or deactivation, and reduce the frequency of inspections.

[0016] 2. The light alarm uses different flashing frequencies and colors of light to indicate the location and number of abnormal situations, making it easier for operators to check and troubleshoot.

[0017] 3. This utility model has a simple structure, good real-time monitoring effect, effectively shortens the detection time of erroneous deployment and withdrawal, and reduces the difficulty of inspection and dependence on inspection frequency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal connections of this utility model.

[0019] Figure 2 This is a schematic diagram of the external structure of this utility model.

[0020] Figure 3 This diagram shows the connection between the light alarm and the sound alarm and the current detector, the potential difference detector, and the video signal processor, respectively.

[0021] In the diagram, 1 is the power supply, 2 is the outlet pressure plate, 3 is the protection device, 4 is the first potential detector, 5 is the second potential detector, 6 is the current detector, 7 is the light alarm, 8 is the sound alarm, 9 is the potential difference detector, 10 is the camera, 11 is the video signal processor, and 12 is the outlet pressure plate integrated board. Detailed Implementation

[0022] The technical solution of this utility model will be further explained below with reference to the accompanying drawings and specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of this utility model and should not be construed as limiting this utility model. The protection scope of this utility model should be determined by the content of the claims. Modifications or substitutions made by those skilled in the art to the technical solution of this utility model without creative effort all fall within the protection scope of this utility model.

[0023] Example 1

[0024] like Figure 1-3 As shown, an alarm system for the activation / deactivation of an outlet pressure plate is described. A power supply 1 is connected to a protection device 3 via an outlet pressure plate 2. The activation / deactivation of the outlet pressure plate 2 controls the connection status of the power supply and the protection device. A first potential detector 4 is provided on one side of the outlet pressure plate 2, and a second potential detector 5 is provided on the other side. The first potential detector 4 and the second potential detector 5 are connected to a potential difference detector 9. The potential difference detector 9 is connected to a light alarm 7 and a sound alarm 8, respectively. The first potential detector 4 and the second potential detector 5 detect the potential on both sides of the outlet pressure plate 2, and then the potential difference detector 9 detects the potential difference on both sides of the outlet pressure plate 2. The potential difference signal is transmitted to the light alarm 7 and the sound alarm 8. When the outlet pressure plate 2 is erroneously activated / deactivated, the light alarm 7 and the sound alarm 8 will sound an alarm to remind the operator to check the outlet pressure plate 2.

[0025] Preferably, the protection device 3 is equipped with a current detector 6 to detect the current of the protection device 3.

[0026] More preferably, the current detector 6 is connected to the light alarm 7 and the sound alarm 8 respectively. When the current in the protection device 3 is not within the required range, the current detector 6 detects the current signal and then the light alarm 7 and the sound alarm 8 sound an alarm to remind the operator to check the protection device 3.

[0027] Preferably, the outlet pressure plate 2 is distributed on the outlet pressure plate integration plate 12, and the outlet pressure plate integration plate 12 is provided with a video detection system for real-time monitoring of the rotation angle of the outlet pressure plate 2.

[0028] More preferably, the video detection system consists of multiple cameras 10, which are located at the four corners of the outlet pressure plate integrated plate 12, and can simultaneously monitor the rotation angle of multiple outlet pressure plates 2.

[0029] More preferably, the camera 10 is connected to the light alarm 7 and the sound alarm 8 via the video signal processor 11. The rotation angle information detected by the camera 10 is processed by the video signal processor 12 and then transmitted to the light alarm 7 and the sound alarm 8 to trigger an alarm and remind the operator to check the protection device 3.

[0030] Further preferably, the light alarm 7 contains multiple colors. When the current detector 6, the potential difference alarm 9, and the video signal processor 11 are respectively connected to the light alarm 7, the light alarm 7 displays a solid yellow light. When any two of the current detector 6, the potential difference alarm 9, and the video signal processor 11 are connected to the light alarm 7, the light alarm 7 displays a flashing red light. When all of the current detector 6, the potential difference alarm 9, and the video signal processor 11 are connected to the light alarm 7, the light alarm 7 displays a solid red light.

Claims

1. An alarm system for the activation / deactivation of an outlet pressure plate, characterized in that: The power supply (1) is connected to the protection device (3) via the outlet pressure plate (2); the outlet pressure plate (2) is provided with a first potential detector (4) on one side and a second potential detector (5) on the other side. The first potential detector (4) and the second potential detector (5) are connected to the potential difference detector (9). The potential difference detector (9) is connected to the light alarm (7) and the sound alarm (8) respectively.

2. The alarm system for the engagement / disengagement of an outlet pressure plate according to claim 1, characterized in that: The protection device (3) is equipped with a current detector (6).

3. The alarm system for the engagement / disengagement of an outlet pressure plate according to claim 2, characterized in that: The current detector (6) is connected to the light alarm (7) and the sound alarm (8) respectively.

4. The alarm system for the engagement / disengagement of an outlet pressure plate according to claim 1, characterized in that: The outlet pressure plate (2) is distributed on the outlet pressure plate integrated plate (12), and a video detection system is provided outside the outlet pressure plate integrated plate (12).

5. The alarm system for the engagement / disengagement of an outlet pressure plate according to claim 4, characterized in that: The video detection system consists of multiple cameras (10).

6. The alarm system for the engagement / disengagement of an outlet pressure plate according to claim 5, characterized in that: The camera (10) is connected to the light alarm (7) and the sound alarm (8) via the video signal processor (11).

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