CN202678941U - Capacitor set self-adaption protective device - Google Patents
Capacitor set self-adaption protective device Download PDFInfo
- Publication number
- CN202678941U CN202678941U CN 201220262892 CN201220262892U CN202678941U CN 202678941 U CN202678941 U CN 202678941U CN 201220262892 CN201220262892 CN 201220262892 CN 201220262892 U CN201220262892 U CN 201220262892U CN 202678941 U CN202678941 U CN 202678941U
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- microprocessor module
- circuit
- capacitor group
- signal acquisition
- capacitor set
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Abstract
Provided is a capacitor set self-adaption protective device, comprising a capacitor set, a three-phase voltage detection circuit, a three-phase current detection circuit, a microprocessor module, and a signal acquisition circuit having an output terminal connected with the microprocessor module, wherein the signal acquisition circuit comprises a multiplexer and an A/D converter; the output terminal of the three-phase voltage detection circuit and the output terminal of the three-phase current detection circuit are respectively connected with an input terminal of the signal acquisition circuit; the microprocessor module is connected with a control circuit, a control switch, a display screen, an ROM memory, and an input keyboard; and the control switch controls the switching of the capacitor set. The capacitor set self-adaption protective device of the utility model features scientific design, great practicality, and excellent protective effect, and is capable of prolonging the service lifetime of the capacitor set.
Description
Technical field
The utility model relates to a kind of capacitor bank protection device, specifically, has related to a kind of capacitor group self-adaptive protector.
Background technology
Along with the development of science and technology, improve the utilance of power supply equipment and reduce the problem that supply line's loss becomes the power industry pay attention to day by day.In order to address these problems, the capacitor group is the most widely used power equipment, yet, industrial occasions is because the access of capacitor group causes the harmonic current increase, and the phenomenon of burning capacitor box equipment happens occasionally, and in a single day capacitor produces amplified harmonic current, its consequence is normally quite serious, not only capacitor itself can be burnt, when serious, also contactor can be made, feeding switch, even transformer all burnt, thereby causes serious electric power accident, greatly reduces the useful life of capacitor group.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, thus provide a kind of design science, practical, protection is effective and prolong the capacitor group capacitor group self-adaptive protector in useful life.
To achieve these goals; the technical scheme that the utility model adopts is: a kind of capacitor group self-adaptive protector; comprise the capacitor group; the three-phase voltage testing circuit; three-phase current detection circuit; the signal acquisition circuit that microprocessor module and output are connected with described microprocessor module; wherein; the output of described three-phase voltage testing circuit be connected the output of three-phase current detection circuit and be connected with the input of described signal acquisition circuit respectively; described microprocessor module is connected with control circuit and control switch, and described control switch is controlled the switching of described capacitor group.
Based on above-mentioned, described microprocessor module also is connected with display screen, ROM memory and input keyboard.
Based on above-mentioned, described signal acquisition circuit comprises MUX and A/D converter.
The relative prior art of the utility model has substantive distinguishing features and progress, specifically, the utility model comprises the signal acquisition circuit that capacitor group, three-phase voltage testing circuit, three-phase current detection circuit, microprocessor module and output are connected with described microprocessor module, whether the signal that described microprocessor module collects by the analytic signal Acquisition Circuit, discriminatory analysis opening-closing capacitor bank; It has design science, practical, protection is effective and prolong the capacitor group advantage in useful life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1; a kind of capacitor group self-adaptive protector; comprise the capacitor group; the three-phase voltage testing circuit; three-phase current detection circuit; the signal acquisition circuit that microprocessor module and output are connected with described microprocessor module; wherein; described signal acquisition circuit comprises MUX and A/D converter; the output of described three-phase voltage testing circuit be connected the output of three-phase current detection circuit and be connected with the input of described signal acquisition circuit respectively; described microprocessor module is connected with control circuit; control switch; display screen; ROM memory and input keyboard, described control switch is controlled the switching of described capacitor group.
Based on above-mentioned, the conversion of three-phase voltage and three-phase current in the real-time detection line of described three-phase voltage testing circuit and described three-phase current detection circuit.
Based on above-mentioned, the MUX in the described signal acquisition circuit and A/D converter are digital signal with the analog signal conversion that detects, and are transferred to described microprocessor module.
Based on above-mentioned; in advance information and the protection threshold value of capacitor group are exported described microprocessor module; can key in by described input keyboard; information and protection threshold value that the three-phase voltage that detects along with the aging basis of capacitor group and three-phase current change the capacitor group timely, and be input in the described microprocessor module by described input keyboard.
Based on above-mentioned, owing to need to according to transmission of electricity environment change protection threshold value, connecting the ROM memory and enlarge memory capacity of this device.
Based on above-mentioned, described display screen is used for the three-phase voltage and the real time data of three-phase current and information and the protection threshold value of capacitor group that detect in the circuit.
Based on above-mentioned, during the work beginning, whether detect first the control circuit circuit has the switching order, does not then excise the capacitor group; If there is then described microprocessor module start working, according to the data analysis that collects, detect current voltage and whether surpass overvoltage, there is overvoltage then to excise the capacitor group; Do not have overvoltage then to drop into the capacitor group, detect simultaneously three-phase voltage and three-phase current.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (3)
1. capacitor group self-adaptive protector; comprise the capacitor group; it is characterized in that: it comprises the signal acquisition circuit that three-phase voltage testing circuit, three-phase current detection circuit, microprocessor module and output are connected with described microprocessor module; wherein; the output of described three-phase voltage testing circuit be connected the output of three-phase current detection circuit and be connected with the input of described signal acquisition circuit respectively; described microprocessor module is connected with control circuit and control switch, and described control switch is controlled the switching of described capacitor group.
2. capacitor group self-adaptive protector according to claim 1, it is characterized in that: described microprocessor module also is connected with display screen, ROM memory and input keyboard.
3. capacitor group self-adaptive protector according to claim 1, it is characterized in that: described signal acquisition circuit comprises MUX and A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262892 CN202678941U (en) | 2012-06-06 | 2012-06-06 | Capacitor set self-adaption protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262892 CN202678941U (en) | 2012-06-06 | 2012-06-06 | Capacitor set self-adaption protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678941U true CN202678941U (en) | 2013-01-16 |
Family
ID=47499816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220262892 Expired - Fee Related CN202678941U (en) | 2012-06-06 | 2012-06-06 | Capacitor set self-adaption protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738773A (en) * | 2012-06-06 | 2012-10-17 | 河南省电力公司信阳供电公司 | Adaptive capacitor bank protection device |
-
2012
- 2012-06-06 CN CN 201220262892 patent/CN202678941U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738773A (en) * | 2012-06-06 | 2012-10-17 | 河南省电力公司信阳供电公司 | Adaptive capacitor bank protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20140606 |