Acousto-optic anti-misoperation control loop of relay protection screen cabinet

Abstract

The utility model discloses an acousto-optic anti-misoperation control loop of a relay protection screen cabinet, which relates to the technical field of relay protection devices, and is characterized in that a secondary coil of a voltage transformer is connected with the relay protection screen cabinet and is connected with a voltage relay in series, when electrical equipment runs, the secondary loop of the voltage transformer is electrified, and the relay protection screen cabinet is electrified. When the field personnel open the cabinet door of the relay protection screen cabinet, the limit switch of the cabinet door of the relay protection screen cabinet is closed, the input dry contact loop of the acousto-optic voice alarm is connected, the function of the acousto-optic voice alarm is triggered, and a voice prompt is given to the personnel needing to carry out maintenance operation. And personnel are prevented from carrying out operation in abnormal states such as inconcentrated energy and fatigue operation, so that operation risks such as mistaken touch and mistaken wiring are avoided, safe operation of equipment is ensured, and personnel injury accidents are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay protection device technical field, especially a relay protection screen cabinet sound light mistake proof control loop. BACKGROUND

[0002] Relay protection device is the important equipment of maintaining electric power system safe and stable operation, and various relay protection equipment needs to be overhauled and maintained regularly by relay protection professional and technical personnel according to different overhaul periods, so as to improve equipment operation reliability.

[0003] The relay protection equipment overhaul process emphasizes preventing relay protection " three mistakes " (i. e. mistaken touch, mistaken wiring and mistaken setting), and various electric power enterprises have many indoor relay protection screen cabinets in the relay protection room, such as generator protection screen cabinet, excitation regulator cabinet and fault recording cabinet etc. electrical secondary equipment screen cabinet. If the screen cabinet door is opened by the field operation or overhaul personnel due to work needs during the operation of electrical primary equipment, and the personnel carry out operation in abnormal state such as lack of concentration and fatigue operation, there are operation risks such as mistaken touch and mistaken wiring, which not only affect the safe operation of equipment, but also cause personnel injury accidents in serious cases, so it is needed to remind and warn after the screen cabinet door of the relay protection is opened by the field personnel, and the attention of the operation personnel is concentrated. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to overcome the screen cabinet door to be opened by the field operation or overhaul personnel due to work needs, and the personnel carry out operation in abnormal state such as lack of concentration and fatigue operation, there are operation risks such as mistaken touch and mistaken wiring, which not only affect the safe operation of equipment, but also cause personnel injury accidents in serious cases, and the technical problem to be solved by the utility model is to provide a relay protection screen cabinet sound light mistake proof control loop, which can timely give voice prompt to the personnel needing to overhaul, timely stop the mistaken touch and mistaken wiring of the overhaul personnel, and prevent mistaken operation.

[0005] In order to solve the above technical problem, the utility model provides a relay protection screen cabinet sound light mistake proof control loop, which comprises a voltage relay and a voltage transformer secondary coil, the voltage relay is connected in series with the voltage transformer secondary coil, and the voltage transformer secondary coil is connected with a relay protection screen cabinet.

[0006] Preferably, the coil of the voltage relay is connected with the voltage transformer secondary coil through mutual induction.

[0007] Specifically, the voltage transformer secondary coil is electrified, the voltage relay is actuated, and the contact of the voltage relay is closed.

[0008] Preferably, the voltage relay is connected in series with a cabinet door limit switch, the cabinet door limit switch is connected in parallel with an alarm test button, and the voltage relay, the cabinet door limit switch and the alarm test button form a parallel circuit.

[0009] Preferably, the alarm is connected at both ends of the parallel circuit.

[0010] Specifically, the voltage relay, the cabinet door limit switch and the alarm form a first circuit, and the alarm test button and the alarm form a second circuit.

[0011] Preferably, the alarm is powered by an alarm power switch, and the power of the alarm power switch is derived from a relay protection screen cabinet.

[0012] Preferably, the voltage transformer secondary coil is connected to the relay protection screen cabinet through a pair of cables.

[0013] Preferably, the alarm test button is a manually activated button.

[0014] Specifically, the alarm test button is set as a manually activated button, which can facilitate the on-site verification of the alarm by the operator to determine whether the alarm is in a normal working state.

[0015] Preferably, the alarm is an audible and visual voice alarm, and the sound decibel of the alarm is 60DB-105DB.

[0016] Specifically, the sound decibel of the alarm can be adjusted according to the actual needs of the operator to avoid too small sound that cannot give the operator timely and effective reminders, and too large sound that will bring the operator an irritating sound and affect the normal working state of the operator.

[0017] Preferably, the alarm is installed in a wall-hanging manner; or the alarm is installed in a magnetic manner; or the alarm is installed in a guide rail manner.

[0018] Specifically, when the alarm is installed in a wall-hanging manner, it can be suspended inside or outside the relay protection screen cabinet; when the alarm is installed in a magnetic manner, it can be magnetically attracted to the door of the relay protection screen cabinet; when the alarm is installed in a guide rail manner, it can be installed on the terminal guide rail in the relay protection screen cabinet by using a clamping method; and the diversified installation methods of the alarm make the installation convenient.

[0019] Preferably, the power derived from the relay protection screen cabinet is 220V alternating current.

[0020] Beneficial effects

[0021] The utility model discloses a voltage transformer secondary coil is connected with the relay protection screen cabinet, and the voltage transformer secondary coil is connected with the voltage relay in series, when the electrical equipment is running, the voltage transformer secondary circuit is electrified, and the voltage relay acts, then the voltage relay contact point closes, when the on -the -spot personnel opens the cabinet door of relay protection screen cabinet, and the cabinet door limit switch of relay protection screen cabinet closes, and the input dry contact loop of sound -light voice alarm is connected, and the sound -light voice alarm function is triggered, and the personnel who needs to carry out the maintenance operation is prompted by voice, avoids the personnel to carry out the operation under the abnormal state such as the concentration of energy not being concentrated, the fatigue operation, and further avoids the operation risk such as the false touch, the false wiring, guarantees the safe operation of equipment, avoids causing the personnel injury accident.

[0022] Meanwhile when the equipment is not in the running state, then the cabinet door of relay protection screen cabinet is opened, and the sound -light voice alarm is not triggered, prevent unnecessary interference to the on -the -spot operating personnel.

[0023] The utility model discloses a warning test button is set, and the warning test button is set as manual starting button, when pressing the warning test button, the sound -light voice alarm starts, and the personnel is convenient for the sound -light alarm of regular inspection sound -light voice alarm. DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0025] Figure 1 It is the relay protection screen cabinet sound -light anti -error control loop connection schematic diagram in the utility model.

[0026] The figure reference explains: 1, alarm; 2, voltage relay; 3, cabinet door limit switch; 4, warning test button; 5, alarm power switch; 6, voltage transformer secondary coil. DETAILED DESCRIPTION

[0027] In order to further understand the content of the utility model, the following will be to the utility model detailed description with the drawing and specific embodiment.It should be understood that the embodiment is only to explain the utility model and is not limited.

[0028] Embodiment 1

[0029] A relay protection screen cabinet sound -light anti -error control loop, like Figure 1As shown, the voltage relay 2 and the voltage transformer secondary coil 6 are connected in series, and the voltage transformer secondary coil 6 is connected to the relay protection screen cabinet.

[0030] The coil of the voltage relay 2 is connected to the voltage transformer secondary coil 6.

[0031] Specifically, the voltage transformer secondary coil 6 is electrified, the voltage relay 2 is activated, and the contact of the voltage relay 2 is closed.

[0032] The voltage relay 2 is connected in series with the cabinet door limit switch 3, and the cabinet door limit switch 3 is connected in parallel with the alarm test button 4, and the voltage relay 2, the cabinet door limit switch 3, and the alarm test button 4 form a parallel circuit.

[0033] The alarm 1 is connected to both ends of the parallel circuit.

[0034] Specifically, the voltage relay 2, the cabinet door limit switch 3, and the alarm 1 form a first circuit, and the alarm test button 4 and the alarm 1 form a second circuit.

[0035] The alarm 1 is powered by the alarm power switch 5, and the power of the alarm power switch 5 is derived from the relay protection screen cabinet.

[0036] The voltage transformer secondary coil 6 is connected to the relay protection screen cabinet through a pair of cables.

[0037] The alarm test button 4 is a manually activated button.

[0038] Specifically, the alarm test button 4 is set as a manually activated button, which can facilitate the on-site verification of the alarm 1 by the operator whether it is in a normal working state.

[0039] The alarm 1 is an audible and visual voice alarm, and the sound decibel of the alarm 1 is 60DB-105DB.

[0040] Specifically, the sound decibel of the alarm 1 can be adjusted according to the actual needs of the operator, so as to avoid too small sound that cannot give the operator timely and effective reminders, and too large sound that will bring the operator irritating sound and affect the normal working state of the operator.

[0041] The installation mode of the alarm 1 is wall-mounted; or the installation mode of the alarm 1 is magnetic; or the installation mode of the alarm 1 is guide rail type.

[0042] Specifically, when the alarm 1 is installed in a wall-hanging manner, it can be hung inside or outside the relay protection screen cabinet; when the alarm 1 is installed in a magnetic manner, it can be magnetically attracted to the door of the relay protection screen cabinet; when the alarm 1 is installed in a guide rail manner, it can be installed on the terminal guide rail in the relay protection screen cabinet by using a clamping method; and the diversified installation manner of the alarm 1 makes the installation convenient.

[0043] The power source of the relay protection screen cabinet is 220V alternating current.

[0044] Working principle: the alarm 1 is an audible and visual voice alarm, and the sound decibel of the alarm 1 is 60DB-105DB, which can be freely adjusted according to actual needs. The voice content of the alarm 1 can also be customized and modified according to actual needs or prompt content that is easy for operators to receive, which facilitates friendly reminders to workers. In addition, the diversified installation manner of the alarm 1 can adapt to different application scenarios. When the installation manner is wall-hanging, it can be hung inside or outside the relay protection screen cabinet. When the installation manner is magnetic, it can be magnetically attracted to the door of the relay protection screen cabinet. When the installation manner is guide rail, it can be installed on the terminal guide rail in the relay protection screen cabinet by using a clamping method. The installation manner is convenient. The alarm 1 is provided with a 220V alternating current power source by an alarm power switch 5. The power source of the alarm power switch 5 is derived from the 220V alternating current auxiliary power source in the relay protection screen cabinet. If it is necessary to cancel the use function of the alarm 1, only the alarm power switch 5 needs to be turned off.

[0045] Generally, to realize the relay protection function of electrical equipment, the primary voltage of the running electrical equipment is converted into 57.74V or 100V alternating current by a voltage transformer, and then sent to the relay protection screen cabinet by the secondary coil circuit of the voltage transformer. This conversion enables the measurement instrument and the relay protection device to safely and accurately obtain the voltage signal, thereby realizing the monitoring and protection of the power system. This process ensures the safe and stable operation of the power system.

[0046] The voltage relay 2 is connected to the coil of the voltage relay 2 by a set of voltage transformer secondary circuits referenced by the relay protection screen cabinet. When the electrical equipment is running, the voltage transformer secondary coil 6 circuit is electrified, the voltage relay 2 acts, and then the voltage relay 2 contact is closed. When the on-site operator opens the cabinet door of the relay protection screen cabinet, the cabinet door limit switch 3 of the relay protection screen cabinet is closed, the input dry contact circuit of the alarm 1 is connected, the function of the alarm 1 is triggered, the voice prompt is given to the operator who needs to carry out the maintenance operation, the maintenance operator is reminded in time to avoid the operation risk such as mis-touch and mis-operation in the abnormal state of the operator who is not concentrated and fatigued, the safe operation of the equipment is ensured, the personnel injury accident is avoided, and it needs to be explained that the triggering mode of the alarm 1 is the dry contact, the contact capacity of which is 5A 250VAC.

[0047] If the electrical equipment is not in the running state, the voltage transformer secondary coil 6 circuit is not electrified, and then the voltage relay 2 is always in the open state. When the operator opens the cabinet door of the relay protection screen cabinet, even if the cabinet door limit switch 3 of the relay protection screen cabinet is closed, the voltage relay 2 is in the open state, and a complete and effective power supply circuit is not formed, so the alarm 1 cannot be triggered to prevent unnecessary interference to the on-site operator.

[0048] At the same time, the alarm test button 4 is arranged, and the alarm test button 4 is a manual starting button and is used to artificially verify the integrity of the alarm 1. Specifically, when the inspection personnel press the alarm test button 4, an effective power supply circuit is formed. At this time, the alarm 1 can give the effective voice prompt information set in advance, and the inspection personnel can verify the integrity of the alarm 1, which indicates that the alarm 1 is in the normal working state. If the alarm 1 does not give the effective voice prompt information set in advance at this time, it indicates that the alarm 1 is faulty and needs to be repaired or replaced in the first time to avoid the situation that the alarm 1 cannot give the effective voice prompt information to the operator who needs to carry out the maintenance operation when the operator normally works, the operator works in the abnormal state of not being concentrated and being fatigued, and the operation risk such as mis-touch and mis-wiring occurs, the normal and safe operation of the equipment is affected, and even the personnel injury accident can occur.

[0049] The above embodiment is only used to illustrate the technical scheme of the utility model and not to limit it. Although the utility model is described in detail with reference to the above embodiment, those skilled in the art should understand that the specific implementation mode of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the utility model, and any modification or equivalent replacement without departing from the spirit and scope of the utility model should be covered in the protection scope of the claims of the utility model.

Claims

1. A sound-light anti-misoperation control loop for a relay protection screen cabinet, characterized in that, The voltage relay (2) and the voltage transformer secondary coil (6) are included, the voltage relay (2) is connected in series with the voltage transformer secondary coil (6), and the voltage transformer secondary coil (6) is connected with a relay protection screen cabinet.

2. The voice-light anti-misoperation control loop of the relay protection screen cabinet according to claim 1, characterized in that, The coil of the voltage relay (2) is connected with the voltage transformer secondary coil (6) in a mutual induction mode.

3. The voice light anti-misoperation control loop of the relay protection screen cabinet according to claim 1, characterized in that, The voltage relay (2) is connected in series with a cabinet door limit switch (3), the cabinet door limit switch (3) is connected in parallel with an alarm test button (4), and the voltage relay (2), the cabinet door limit switch (3) and the alarm test button (4) form a parallel circuit.

4. The voice light anti-misoperation control loop of the relay protection screen cabinet according to claim 3, characterized in that, The alarm (1) is connected with the parallel circuit at two ends.

5. The voice optical anti-misoperation control loop of the relay protection screen cabinet according to claim 4, characterized in that, The alarm (1) is provided with power by an alarm power switch (5), and the power of the alarm power switch (5) is derived from a relay protection screen cabinet.

6. The audible and visual anti-misoperation control loop for the relay protection screen cabinet according to claim 1, characterized in that, The voltage transformer secondary coil (6) is connected with the relay protection screen cabinet through a pair of cables.

7. The voice light anti-misoperation control loop of the relay protection screen cabinet according to claim 3, characterized in that, The alarm test button (4) is a manual start button.

8. The voice optical anti-misoperation control loop of the relay protection screen cabinet according to claim 4, characterized in that, The alarm (1) is an audible and visual voice alarm, and the sound decibel of the alarm (1) is 60DB-105DB.

9. The voice optical anti-misoperation control loop of the relay protection screen cabinet according to claim 4, characterized in that, The installation mode of the alarm (1) is a wall-mounted type, or the installation mode of the alarm (1) is a magnetic type, or the installation mode of the alarm (1) is a guide rail type.

10. The voice optical anti-misoperation control loop of the relay protection screen cabinet according to claim 5, characterized in that, The power derived from the relay protection screen cabinet is 220V alternating current.

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