CN201113399Y - High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device - Google Patents
High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device Download PDFInfo
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- CN201113399Y CN201113399Y CNU2007200272798U CN200720027279U CN201113399Y CN 201113399 Y CN201113399 Y CN 201113399Y CN U2007200272798 U CNU2007200272798 U CN U2007200272798U CN 200720027279 U CN200720027279 U CN 200720027279U CN 201113399 Y CN201113399 Y CN 201113399Y
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- energy storage
- storage motor
- voltage
- overvoltage
- power storage
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Abstract
The utility model discloses a power storage motor overvoltage protector for a high-voltage circuitbreaker spring operating mechanism, consisting of an RC absorbing circuit, a piezoresistor RV circuit and a diode D inhibition circuit which are connected in parallel together, two outer leads + and - are connected with the two ends of the power storage motor D. When the charge of a storage battery causes the over-high switching voltage or a travel switch leads to the arc light to cause the operating overvoltage after a transforming plant is overhauled, the power storage motor overvoltage protector can prevent and minimize the overvoltage of the power storage motor and realize the overvoltage protection function of the power storage motor.
Description
Technical field
The utility model relates to a kind of overcurrent protection device, relates in particular to a kind of energy storage motor overvoltage protection of high-voltage breaker spring operating mechanism.
Background technology
In the accident of the energy storage motor scaling loss of high-voltage breaker spring operating mechanism, be that the energy storage motor overvoltage causes the energy storage motor scaling loss through statistical analysis 80%.Cause the energy storage motor overvoltage mainly under following 2 kinds of situations, to take place.
First kind is energy storage motor scaling loss when electricity is sent in recovery after transformer station's maintenance.The superpotential reason of this situation energy storage motor is that transformer station's when maintenance direct current system is out of service, during storage battery be in discharge condition.Direct current system was resumed operation when maintenance back recovery transformer station of transformer station sent electricity, and silicon rectifier is to the storage battery large current charge, and it is a lot of to cause power switch voltage to exceed rated value, is up to 270V.This moment, operate high pressure circuit breaker energy storage motor turned round and the overvoltage scaling loss.
Second kind is after the travel switch of spring operating mechanism damages.After energy storage motor running this moment put in place, travel switch can not normal cutoff energy storage motor loop and cause electric arc, except causing the travel switch contact burning, can cause that also switching overvoltage makes the energy storage motor scaling loss.
But still do not have available overcurrent protection device that it is protected at present, prevent the energy storage motor scaling loss.
Summary of the invention
The purpose of this utility model is exactly in order to solve the problem that present shortage prevents the overcurrent protection device of energy storage motor scaling loss; provide a kind of when transformer station's maintenance back charge in batteries causes that the too high or travel switch of switching voltage causes that arc light causes switching overvoltage; can prevent, alleviate, eliminate the energy storage motor overvoltage, the energy storage motor overvoltage protection of the high-voltage breaker spring operating mechanism of advantages such as realization energy storage motor over-voltage protection function.
For achieving the above object, the utility model adopts following technical scheme:
A kind of energy storage motor overvoltage protection of high-voltage breaker spring operating mechanism, it comprises absorption circuit, the piezo-resistance RV loop that capacitance-resistance RC constitutes and suppresses diode D loop that the output after their parallel connections positive and negative terminals of energy storage motor respectively connects.
The utility model by capacitance-resistance RC absorption circuit, piezo-resistance RV loop, suppress diode D loop three part parallel connections, draw from the two ends of parallel connection again two outer leads+,-be connected in parallel on the positive and negative binding post of energy storage motor D.When transformer station's maintenance back charge in batteries causes that the too high or travel switch of switching voltage causes that arc light causes switching overvoltage, for capacitance-resistance RC absorption circuit, the characteristic of utilizing electric capacity two ends institute making alive not suddenly change is come the climbing of over-voltage, capacitor C series resistance R can play damping action again, alleviates the energy storage motor overvoltage.And the voltage of the piezo-resistance RV in the piezo-resistance RV loop and electric current are special non-linear relation.When piezo-resistance two ends institute making alive is lower than the nominal rating magnitude of voltage, the resistance value approach infinity of piezo-resistance RV, inside almost no current is flow through.When piezo-resistance RV both end voltage during a little more than nominal rating voltage, piezo-resistance punctures conducting rapidly, and becomes low resistive state by high-impedance state, and operating current sharply increases to certain value and causes close switch insurance 3RD, 4RD fusing, thereby has protected energy storage motor.The effect that suppresses diode D loop is that diode is stabilized in the load voltage value energy storage motor both end voltage, and diode current flow makes close switch insurance 3RD, 4RD fusing during the energy storage motor overvoltage, thereby has protected energy storage motor.
The beneficial effects of the utility model are: when the various energy storage motor over-voltage condition that occurs, this device can prevent effectively, alleviate, eliminate energy storage motor and cause the energy storage motor scaling loss, guaranteed the normal operation of primary cut-out.
Description of drawings
Fig. 1 is the high-voltage breaker spring operating mechanism energy storage motor circuit diagram after the realization overvoltage protection;
Fig. 2 is the internal circuit of this device;
Fig. 3 is the outline drawing of this device.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the high-voltage breaker spring operating mechanism energy storage motor circuit diagram after the realization overvoltage protection.Travel switch SP, energy storage motor D and close switch insurance 3RD, 4RD be connected on closing bus bar+HM ,-HM on.This device by external connection+,-be attempted by on the positive and negative terminal of energy storage motor.
Fig. 2 is the internal circuit of this device.Device by resistance R with after capacitor C is connected again with piezo-resistance RV and suppress diode D and be formed in parallel, from two ends in parallel lead-out wire as the outer lead of this device+,-.
Resistance R is connected with capacitor C and is constituted resistance capaciting absorpting circuit.It is that resistance R is selected 12W, 250 μ F for use that process calculating and test draw optimum implementation.
Piezo-resistance is selected MYG10K280 for use.Suppress diode and select imported product SMTPA270 for use.
Fig. 3 is the outline drawing of this device.+ ,-be outer lead.The profile of this device is through optimal design, and it is little that cylinder takies volume, is fit to be installed on the energy storage motor support and does not influence the original conformation function of spring operating mechanism.
After using this device, when transformer station's maintenance back charge in batteries causes that the too high or travel switch of switching voltage causes that arc light causes switching overvoltage, can prevent, alleviate, eliminate the energy storage motor overvoltage, realization energy storage motor over-voltage protection function.
Claims (1)
1, a kind of energy storage motor overvoltage protection of high-voltage breaker spring operating mechanism; it is characterized in that: it comprises absorption circuit, the piezo-resistance RV loop that capacitance-resistance RC constitutes and suppresses diode D loop that the output after their parallel connections positive and negative terminals of energy storage motor respectively connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200272798U CN201113399Y (en) | 2007-09-10 | 2007-09-10 | High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200272798U CN201113399Y (en) | 2007-09-10 | 2007-09-10 | High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113399Y true CN201113399Y (en) | 2008-09-10 |
Family
ID=39965144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200272798U Expired - Fee Related CN201113399Y (en) | 2007-09-10 | 2007-09-10 | High-voltage circuit-breaker spring-operated device energy storage electric motor over-voltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113399Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384059A (en) * | 2013-07-08 | 2013-11-06 | 中国科学院等离子体物理研究所 | Vacuum circuit breaker energy storage motor protection circuit |
| CN104701069A (en) * | 2015-03-30 | 2015-06-10 | 国网上海市电力公司 | Automatic protecting device for circuit breaker energy storing system |
-
2007
- 2007-09-10 CN CNU2007200272798U patent/CN201113399Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384059A (en) * | 2013-07-08 | 2013-11-06 | 中国科学院等离子体物理研究所 | Vacuum circuit breaker energy storage motor protection circuit |
| CN103384059B (en) * | 2013-07-08 | 2016-08-10 | 中国科学院等离子体物理研究所 | A kind of vacuum circuit breaker energy storage motor protection circuit |
| CN104701069A (en) * | 2015-03-30 | 2015-06-10 | 国网上海市电力公司 | Automatic protecting device for circuit breaker energy storing system |
| CN104701069B (en) * | 2015-03-30 | 2016-08-24 | 国网上海市电力公司 | A kind of breaker energy storage system automatic safety 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: 20080910 |