An over-temperature alarm circuit for reactive power compensation device
By designing an overtemperature alarm circuit for reactive compensation device, the controller receives temperature signals and starts the heat dissipation fan and buzzer, the fault problem of reactive compensation capacitor in high temperature environments is solved, and the automatic cooling and reminding function is realized, which improves the safety and stability of the capacitor.
Patent Information
- Application Number
- CN202421437497.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-21
AI Technical Summary
Reactive compensation capacitors may cause failures such as bursting, bulging, thermal breakdown, ignition or explosion in high temperature environments, and it is difficult for the existing technology to effectively monitor and cool down.
A reactive power compensation device over-temperature alarm circuit is designed, and the external temperature signal is received by controller K. When the first-level high temperature is reached, the conduction end point M1/M2 is closed and the heat dissipation fan is started to dissipate heat. If the temperature continues to rise to the second-level high temperature, the conduction end point A1/A2 is turned on, and the buzzer is working, and an acoustic and optical signal alarm is emitted.
It can effectively reduce cooling and remind staff without excessive manpower, improve the safety and stability of the capacitor, and reduce the risk of failure caused by high temperature.
Smart Images
Figure CN222734545U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of reactive power compensation capacitors, in particular to an over-temperature alarm circuit of a reactive power compensation device. Background Art
[0002] Most of the problems with reactive compensation capacitors are caused by excessive temperature. If the reactive compensation cabinet is to operate safely and stably, one of the prerequisites is that it must work within the specified temperature range. Otherwise, it may not only cause the capacitor shell to burst and bulge, but also cause thermal breakdown inside the capacitor. In severe cases, fire, explosion and other faults may occur. Therefore, in the face of high temperature environment, certain measures must be taken. 1. Create good ventilation conditions: ensure that the power capacitors in the compensation cabinet can dissipate heat normally. Exhaust fans and other measures can be adopted. If conditions permit, air conditioners can be installed indoors to improve the high temperature environment. 2. Strengthen inspections: Relevant staff need to regularly inspect and test the reactive compensation capacitor group in operation. If it is found that the operating temperature of a capacitor is too high or the ambient temperature is higher than the permitted value, the problematic capacitor must be withdrawn from operation and strong cooling measures must be taken. The second solution requires a certain amount of manpower and financial resources. Utility Model Content
[0003] In order to solve the above problems, the present technical solution provides an over-temperature alarm circuit for a reactive power compensation device.
[0004] To achieve the above purpose, the technical solution is as follows:
[0005] An over-temperature alarm circuit for a reactive power compensation device includes a controller K, wherein the controller K is provided with a conduction terminal M1 / M2, wherein one end of the conduction terminal M1 / M2 is connected to a live wire, and the other end is connected to a neutral wire through a heat dissipation fan 1F, wherein the heat dissipation fan 1F is also connected in parallel with a heat dissipation fan 2F, and when the controller K receives an external high temperature signal, the conduction terminal M1 / M2 is connected to enable the heat dissipation fan 1F and the heat dissipation fan 2F to start working;
[0006] The controller K is also provided with a conduction terminal A1 / A2, one end of which is connected to the live wire, and the other end is connected to the neutral wire through the buzzer HD. When the controller K receives an external high temperature signal, the conduction terminal A1 / A2 is connected to enable the buzzer HD to start working.
[0007] In some embodiments, the conduction temperature value of the terminal M1 / M2 is lower than the conduction temperature value of the conduction terminal A1 / A2.
[0008] In some embodiments, a fuse FU is further provided between the controller K and the live wire.
[0009] The beneficial effects of this application are:
[0010] The present application utilizes controller K to receive external temperature signals. If the capacitor is in the first level of high temperature, the conduction terminals M1 / M2 are closed so that the controller K receives the live wire and transmits it to two cooling fans for heat dissipation. If the temperature still cannot drop and rises to the second level of high temperature, the conduction terminals A1 / A2 are simultaneously turned on and the buzzer works to remind the staff, thereby eliminating the need for excessive manpower for monitoring and better maintaining the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.
[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION
[0013] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0014] Please refer to Figure 1 As shown, an over-temperature alarm circuit of a reactive power compensation device includes a controller K, wherein the controller K is provided with a conduction terminal M1 / M2, wherein one end of the conduction terminal M1 / M2 is connected to a live wire, and the other end is connected to a neutral wire through a heat dissipation fan 1F, wherein the heat dissipation fan 1F is also connected in parallel with a heat dissipation fan 2F, and when the controller K receives an external high temperature signal, the conduction terminal M1 / M2 is connected to enable the heat dissipation fan 1F and the heat dissipation fan 2F to start working;
[0015] The controller K is also provided with a conduction terminal A1 / A2, one end of which is connected to the live wire, and the other end is connected to the neutral wire through the buzzer HD. When the controller K receives an external high temperature signal, the conduction terminal A1 / A2 is connected to enable the buzzer HD to start working.
[0016] In a preferred embodiment, the controller K is a relay, and the coil end is used to receive a signal from an external temperature sensor to conduct two ends.
[0017] In this embodiment, the conduction temperature value of the terminal M1 / M2 is lower than the conduction temperature value of the conduction terminal A1 / A2.
[0018] In this embodiment, a fuse FU is further provided between the controller K and the live wire.
[0019] How this application works:
[0020] Endpoints M1, M2 and A1, A2 are two groups of temperature setting relay outputs in the reactive compensation controller (where the temperature setting values of A1, A2 are higher than M1, M2). When the temperature sensor of the reactive compensation controller detects that the ambient temperature reaches the first setting value, the first group of relays M1, M2 are energized, exhaust fans 1F and 2F are powered on, and the reactive compensation cabinet starts to dissipate heat. When the ambient temperature drops below the setting value, the ends M1, M2 are disconnected, and exhaust fans 1F and 2F lose power and stop. If the ambient temperature not only cannot be reduced but continues to rise due to exhaust fan failure or other reasons, when it reaches the second setting value, the second group of relays A1, A2 are energized, and the buzzer HD is powered on, sending out sound and light signal alarms to inform the staff and eliminate the fault in time. The buzzer can be installed not only on the panel of the reactive compensation cabinet, but also in the duty room to achieve the purpose of remote alarm.
[0021] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.
Claims
1. An over-temperature alarm circuit for a reactive power compensation device, characterized in that: The controller K includes a conduction terminal M1 / M2, one end of which is connected to the live wire, and the other end is connected to the neutral wire through the cooling fan 1F. The cooling fan 1F is also connected in parallel with the cooling fan 2F. When the controller K receives an external high temperature signal, the conduction terminal M1 / M2 is connected to start the cooling fan 1F and the cooling fan 2F. The controller K is also provided with a conduction terminal A1 / A2, one end of which is connected to the live wire, and the other end is connected to the neutral wire through the buzzer HD. When the controller K receives an external high temperature signal, the conduction terminal A1 / A2 is connected to enable the buzzer HD to start working.
2. The over-temperature alarm circuit of a reactive power compensation device according to claim 1, characterized in that: The conduction temperature value of the terminal M1 / M2 is lower than the conduction temperature value of the conduction terminal A1 / A2.
3. The over-temperature alarm circuit of a reactive power compensation device according to claim 2 is characterized in that: A fuse FU is also provided between the controller K and the live wire.