CN220231897U - Power insulation detection system - Google Patents
Power insulation detection system Download PDFInfo
- Publication number
- CN220231897U CN220231897U CN202321557399.4U CN202321557399U CN220231897U CN 220231897 U CN220231897 U CN 220231897U CN 202321557399 U CN202321557399 U CN 202321557399U CN 220231897 U CN220231897 U CN 220231897U
- Authority
- CN
- China
- Prior art keywords
- power
- current
- input
- detection circuit
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 238000009413 insulation Methods 0.000 title claims abstract description 50
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims description 26
- 230000000007 visual effect Effects 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides a power insulation detection system, which comprises a power supply, a current transformer, a detection circuit, a current and converter module, a control system, a relay, a display system, an input and output system, a storage system, an alarm system, a communication system and a distribution box, wherein the power supply is connected with the current transformer; the output end of the power supply is respectively connected with the input ends of the current transformer and the detection circuit, the output ends of the current transformer and the detection circuit are connected with the input ends of the current and converter module, the output ends of the current and converter module are connected with the control system, the control system is respectively connected with the display system, the input and output system, the storage system, the alarm system, the communication system and the relay, the relay is respectively connected with the power supply and the detection circuit, and the distribution box is respectively connected with the control system, the alarm system and the communication system.
Description
Technical Field
The utility model relates to the technical field of power detection, in particular to a power insulation detection system.
Background
The power insulation detection system is a device for detecting the insulation state of a power supply, and has the main function of detecting whether the insulation of the power supply meets the safety standard or not so as to ensure the safe operation of electrical equipment. The system is generally composed of a power supply, a test electrode, a detection circuit, a display device and the like.
In a power insulation detection system, the test electrode is typically a device that measures the resistance between the power insulation performance and ground. The detection circuit is used for detecting the resistance between the test electrode and the power supply, and if the resistance value is too small, the insulation performance of the power supply is not good enough, and maintenance or replacement is needed. The display device is used for displaying the result of the power insulation state, and generally displays the resistance value or the level of the power insulation performance.
The power insulation detection system is widely applied to maintenance and overhaul of various electrical equipment, such as motors, transformers, generators, wires and cables and the like. By using the power insulation detection system, the insulation problem of the electrical equipment can be found in time, the safe operation of the equipment is ensured, and accidents are avoided.
Patent document CN111323686a discloses a laboratory isolated power insulation detection system, which comprises a control unit, a current transformer, a positive insulation detection circuit and a negative insulation detection circuit; the control unit is connected with the isolation power supply and used for controlling and adjusting the output voltage and current of the isolation power supply; the isolation power supply is connected with the current transformer, and the current transformer is connected with the control unit; the positive electrode detection end of the isolation power supply is connected with the positive electrode insulation detection circuit, the negative electrode detection end of the isolation power supply is connected with the negative electrode insulation detection circuit, and the positive electrode insulation detection circuit and the negative electrode insulation detection circuit are connected with the control unit. The current transformer detects the current output by the isolation power supply, the control unit changes the current output by the isolation power supply to ensure safety when insulation detection is carried out, and the positive insulation detection circuit and the negative insulation detection circuit detect the insulation resistance values of the positive electrode and the negative electrode of the isolation power supply under different current values to judge the insulation performance of the isolation power supply.
However, the detection system in the scheme has the advantages of simple structure, low efficiency and poor accuracy, and is not suitable for power supply equipment in power systems such as generator sets, substations, distribution rooms and the like. Accordingly, it is desirable to provide a power insulation detection system that solves the above-described problems.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a power insulation detection system.
The utility model adopts the technical proposal for solving the technical problems that:
the utility model provides a power insulation detecting system, which comprises a power source, current transformer, detection circuit, electric current and converter module, a control system, the relay, display system, input and output system, a storage system, alarm system, communication system and block terminal, wherein, the output of power is connected with current transformer and detection circuit input respectively, current transformer and detection circuit output and electric current and converter module's input are connected, electric current and converter module's output and control system are connected, control system is connected with display system respectively, input and output system, storage system, alarm system, communication system and relay, the relay is connected with power and detection circuit respectively, the block terminal is connected with control system respectively, alarm system and communication system, provide external power supply.
The current transformer outputs an actual current and transmits an actual current signal from its output to the current and converter module input.
The detection circuit comprises a first test resistor, a second test resistor, a first switch and a second switch, wherein the first end of the first test resistor is connected with the positive electrode of the power supply, and the first end of the second test resistor is connected with the negative electrode of the direct current power supply; the second end of the first test resistor and the second end of the second test resistor are grounded; the first end of the first switch is connected with the positive electrode of the power supply, and the first end of the second switch is connected with the negative electrode of the power supply; the second end of the first switch and the second end of the second switch are grounded.
The relay comprises a first relay and a second relay which are controlled by a control system, the first relay controls the power supply to be turned on and off, and the second relay controls the first switch and the second switch in the test circuit to be turned on and off.
The input end of the current and converter module receives signals input by the current transformer and the detection circuit, converts the signals into digital signals through an A/D converter in the current and converter module, and transmits the digital signals to the control system.
The input and output system and the storage system can write and store parameter set values to the control system.
The display system comprises a liquid crystal display screen, and can display parameter set values, actual current values, detection circuit resistance values, voltage values and fault reports in real time.
The alarm system comprises an indicator lamp and a buzzer, the input end of the alarm system is connected with the control system, the control system judges the insulation performance of the power supply by comparing the actual numerical value with the parameter set value, if the power supply fails in insulation, the indicator lamp and the buzzer are started to carry out audible and visual alarm, and information can be sent outwards through the communication system.
The utility model has the advantages that:
the power insulation detection system has comprehensive functions, is judged by the control system, if a power insulation fault occurs, the indicator lamp and the buzzer are started to perform audible and visual alarm, and can send information outwards through the communication system, so that the safety performance of the power system is effectively guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a power insulation detection system according to the present utility model.
Fig. 2 is a schematic diagram of a detection circuit of a power insulation detection system according to the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
in this embodiment, as shown in fig. 1 and 2, the power insulation detection system includes a power source, a current transformer, a detection circuit, a current and converter module, a control system, a relay, a display system, an input and output system, a storage system, an alarm system, a communication system and a distribution box, wherein the output end of the power source is connected with the input ends of the current transformer and the detection circuit respectively, the output ends of the current transformer and the detection circuit are connected with the input ends of the current and converter module, the output ends of the current and converter module are connected with the control system, the control system is connected with the display system, the input and output system, the storage system, the alarm system, the communication system and the relay respectively, the relay is connected with the power source and the detection circuit respectively, and the distribution box is connected with the control system, the alarm system and the communication system respectively, so as to provide external power supply.
The current transformer outputs an actual current and transmits an actual current signal from its output to the current and converter module input.
The detection circuit comprises a first test resistor R1, a second test resistor R2, a first switch S1 and a second switch S2, wherein the first end of the first test resistor R1 is connected with the positive electrode of the power supply, and the first end of the second test resistor R2 is connected with the negative electrode of the direct current power supply; the second end of the first test resistor R1 and the second end of the second test resistor R2 are both grounded GND; the first end of the first switch S1 is connected with the positive electrode of the power supply, and the first end of the second switch S2 is connected with the negative electrode of the power supply; the second terminal of the first switch S1 and the second terminal of the second switch S2 are both grounded GND.
The relay comprises a first relay and a second relay which are controlled by a control system, the first relay controls the power supply to be turned on and off, and the second relay controls the first switch and the second switch in the test circuit to be turned on and off.
The input end of the current and converter module receives signals input by the current transformer and the detection circuit, converts the signals into digital signals through an A/D converter in the current and converter module, and transmits the digital signals to the control system.
The input and output system and the storage system can write and store parameter set values to the control system.
The display system comprises a liquid crystal display screen, and can display parameter set values, actual current values, detection circuit resistance values, voltage values and fault reports in real time.
The alarm system comprises an indicator lamp and a buzzer, the input end of the alarm system is connected with the control system, the control system judges the insulation performance of the power supply by comparing the actual numerical value with the parameter set value, if the power supply fails in insulation, the indicator lamp and the buzzer are started to carry out audible and visual alarm, and information can be sent outwards through the communication system.
Example 2:
in this embodiment, as shown in fig. 1 and fig. 2, the detection method of the detection circuit includes controlling the first switch and the second switch to be opened, judging whether the insulation resistance to ground of the power supply is abnormal according to the first voltage of the first sampling resistor and the second voltage of the second testing resistor, controlling the first switch or the second switch to be closed, obtaining the third voltage of the first testing resistor and the fourth voltage of the second testing resistor, and judging whether the insulation resistance to ground of the power supply is abnormal according to the first voltage, the second voltage, the third voltage and the fourth voltage.
In the description of the present utility model, it should be noted that, when terms such as "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships, are to be understood as being based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships conventionally put in use of the inventive product, or the orientations or positional relationships conventionally understood by those skilled in the art, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, when used herein, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "mounted," "configured," and "connected" are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Claims (7)
1. The utility model provides a power insulation detecting system, which comprises a power source, and is characterized in that, still include current transformer, detection circuit, electric current and converter module, control system, the relay, display system, input and output system, a storage system, alarm system, communication system and block terminal, wherein, the output of power is connected with current transformer and detection circuit input respectively, current transformer and detection circuit output and electric current and converter module's input are connected, electric current and converter module's output and control system are connected, control system is connected with display system respectively, input and output system, storage system, alarm system, communication system and relay are connected, the relay is connected with power and detection circuit respectively, the block terminal is connected with control system respectively, alarm system and communication system.
2. A power insulation detection system according to claim 1, wherein the current transformer outputs the actual current and transmits the actual current signal from its output to the current and converter module input.
3. The power insulation detection system according to claim 1, wherein the detection circuit comprises a first test resistor, a second test resistor, a first switch and a second switch, wherein a first end of the first test resistor is connected with an anode of a power supply, and a first end of the second test resistor is connected with a cathode of a direct current power supply; the second end of the first test resistor and the second end of the second test resistor are grounded; the first end of the first switch is connected with the positive electrode of the power supply, and the first end of the second switch is connected with the negative electrode of the power supply; the second end of the first switch and the second end of the second switch are grounded.
4. The power insulation detection system according to claim 1, wherein the current and converter module input receives signals input by the current transformer and the detection circuit, converts the signals into digital signals through an a/D converter therein, and transmits the digital signals to the control system.
5. A power insulation detection system according to claim 1, wherein the input and output system and the memory system are configured to write and store parameter settings to the control system.
6. The power insulation detection system according to claim 1, wherein the display system comprises a liquid crystal display screen capable of displaying parameter set values, actual current values, detection circuit resistance values, voltage values and fault reports in real time.
7. The power insulation detection system according to claim 1, wherein the alarm system comprises an indicator lamp and a buzzer, the input end of the alarm system is connected with the control system, the control system judges the power insulation performance by comparing the actual value with the parameter set value, if the power insulation fault occurs, the indicator lamp and the buzzer are started to perform audible and visual alarm, and information can be sent outwards through the communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321557399.4U CN220231897U (en) | 2023-06-19 | 2023-06-19 | Power insulation detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321557399.4U CN220231897U (en) | 2023-06-19 | 2023-06-19 | Power insulation detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220231897U true CN220231897U (en) | 2023-12-22 |
Family
ID=89182101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321557399.4U Active CN220231897U (en) | 2023-06-19 | 2023-06-19 | Power insulation detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220231897U (en) |
-
2023
- 2023-06-19 CN CN202321557399.4U patent/CN220231897U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102798782B (en) | High-voltage insulation resistance monitoring alarm | |
| CN107037320A (en) | A kind of monitoring system of low-voltage distributing line | |
| CN210129012U (en) | Switch cabinet partial discharge monitoring and early warning device based on gas monitoring | |
| CN210129032U (en) | Device for on-line monitoring fault of current transformer | |
| CN220231897U (en) | Power insulation detection system | |
| CN209821292U (en) | Test tool and test system of high-voltage distribution box | |
| CN110927507A (en) | Safety detection device for four-pile charging pile | |
| CN115808643A (en) | Regulator cubicle function test platform with real-time data acquisition | |
| CN212845645U (en) | Charging pile electric energy data real-time acquisition and uploading system | |
| CN212321734U (en) | Intelligent analysis and state monitoring system for electric energy quality of high-voltage switch cabinet | |
| CN203562840U (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN110780232A (en) | Automatic change looped netowrk cabinet intelligent integrated on-line monitoring device | |
| CN205646531U (en) | Circuit monitoring device , block terminal and distribution system | |
| CN218917574U (en) | Monitoring device of breaker energy storage motor and vacuum circuit breaker | |
| CN206147042U (en) | Emergency diesel electric gennerator set insulation monitoring and warning device | |
| CN217639981U (en) | Power distribution room power platform monitoring system | |
| CN219247537U (en) | Monitoring system of box-type substation for energy storage | |
| CN220709311U (en) | Off-line diagnosis device for generator rotor | |
| CN221224956U (en) | Discharge tester for direct current screen storage battery | |
| CN110579691A (en) | Storage battery pack insulation descending positioning monitoring device and method | |
| CN216051923U (en) | Medium-voltage cabinet comprehensive measurement and control display device and medium-voltage cabinet | |
| CN217717966U (en) | High-low voltage ride through test system of wind generating set | |
| CN212275868U (en) | Terminal data acquisition module | |
| CN220120927U (en) | Insulating monitoring device and system of low-voltage direct current switch board in national network and new forms of energy | |
| CN219715698U (en) | Charging and discharging testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |