CN202854295U - High-voltage circuit-breaker transient recovery voltage regulation device - Google Patents
High-voltage circuit-breaker transient recovery voltage regulation device Download PDFInfo
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- CN202854295U CN202854295U CN 201220243951 CN201220243951U CN202854295U CN 202854295 U CN202854295 U CN 202854295U CN 201220243951 CN201220243951 CN 201220243951 CN 201220243951 U CN201220243951 U CN 201220243951U CN 202854295 U CN202854295 U CN 202854295U
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- frequency modulation
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Abstract
The utility model provides a high-voltage circuit-breaker transient recovery voltage regulation device. Adjustable parameters comprise rate of rise of transient recovery voltage (TRV), peak value, time delay and the like. The device is composed of a frequency-modulated capacitor bank, a frequency-modulated resistor, a time delay capacitor bank, a pneumatic switch and the like, wherein the frequency-modulated capacitor bank and the time delay capacitor bank are composed of DC pulse capacitors, and the frequency-modulated resistor is a woven non-inductive resistor. The device has a three-phase regulation structure, and each phase comprises two parts, including a frequency-modulated subcircuit formed by series connection of the frequency-modulated capacitor bank and the frequency-modulated resistor and the parallel time delay capacitor bank. By changing capacitance and resistance value of the frequency-modulated subcircuit, rate of rise and peak value of TRV can be regulated; and by changing capacitance of the time delay capacitor bank, time delay of TRV can be regulated.
Description
Technical field
The utility model relates to the primary cut-out transient recovery voltage adjusting device, belongs to High-Voltage Electrical Appliances test field.
Background technology
Transient recovery voltage of circuit breaker is the important indicator of breaking capacity of breaker.When isolating switch is short-circuited fault, meeting short circuit current flow in the isolating switch, contact of breaker can produce electric arc when separating, during the current over-zero arc extinction, because the existence of electric capacity, inductance in the circuit, arc-gap voltage need to be through a rejuvenation that is risen to supply voltage by arc voltage, this rejuvenation at first appears at the arc gap two ends is that the voltage with transient response is transient recovery voltage, the time that transient recovery voltage continues is shorter, but from the arc extinguishing angle, when isolating switch cut-off short trouble, transient recovery voltage had decisive meaning.Therefore, the escalating rate of transient recovery voltage of circuit breaker, peak value and time delay are to affect the greatest factor that isolating switch cut-offs.
Can when large Laboratory carries out the short circuit interruption ability test to isolating switch, provide the transient recovery voltage that complies with the national standard requirements, be the important embodiment of testing laboratory's objective and fair, also is an important indicator of large High-Power Laboratory test capability.
The utility model content
The utility model provides the device that can regulate the high-voltage AC breaker transient recovery voltage, to satisfy large High-Power Laboratory circuit breaker short circuit breaking capacity test to the requirement of different electric pressure transient recovery voltage of circuit breaker.
For achieving the above object, the utility model adopts following technical scheme.This device is for the three-phase adjustment structure, and each is comprised of two parts, comprises frequency modulation branch road that frequency modulation capacitor group and frequency modulation resistance are composed in series and time delay capacitor group in parallel.Change frequency modulation branch road capacitance and resistance value, can regulate rate of rise of transient recovery voltage and peak value; Change the time delay that time delay capacitor group capacitance can be regulated transient recovery voltage.
The device of above-mentioned adjusting high-voltage AC breaker transient recovery voltage, the frequency modulation capacitor group of every phase, frequency modulation resistance, time delay capacitor group are one group, totally nine groups of three-phases.Wherein frequency modulation capacitor group, time delay capacitor group are comprised of DC pulse capacitor, and frequency modulation resistance adopts the Weaving type noninductive resistance.
Description of drawings
Fig. 1 is the system diagram of the utility model embodiment;
Fig. 2 is the wiring diagram of the utility model embodiment;
Embodiment
Below by specific instantiation embodiment of the present utility model is described, those skilled in the art can understand advantage of the present utility model and effect easily by the content that instructions discloses.The utility model also can be implemented or used by other different instantiations, and the every details in this instructions also can be based on different viewpoints and application, carries out various decorations and change under the spirit of the present utility model not deviating from.
The system diagram of the utility model embodiment and wiring diagram, respectively as depicted in figs. 1 and 2.
As shown in Figure 1, this device is for the three-phase adjustment structure, but each equal independent regulation mutually, and its ingredient comprises frequency modulation capacitor group, frequency modulation resistance, time delay capacitor group.Frequency modulation capacitor group is connected with frequency modulation resistance, changes its capacitance and resistance value, can regulate rate of rise of transient recovery voltage and peak value.Time delay capacitor group electric capacity is used for regulating the time delay of transient recovery voltage.
As shown in Figure 2, frequency modulation capacitor component is two-layer up and down, and every layer is comprised of many groups DC pulse capacitor, regulates every layer capacitance value by the multitool linked switch, and the interlayer series parallel switch can make two-layer serial or parallel connection; The parameter value adjustment of frequency modulation resistance, time delay capacitor group is identical with frequency modulation capacitor group parameter regulation means; Can make device switch to three-phase operation mode and single-phase operation mode by the wiring switch.
Capacitance and resistance value adjusting, the mode of connection are switched the employing pneumatic operator.The conversion mode of connection can realize the series connection of three-phase frequency modulation capacitor group, the series connection of time delay capacitor group, the connection in series-parallel of frequency modulation resistance flexibly, to satisfy the testing requirements of different electric pressure single-phase circuit breaker.
The further feature of this device is: DC pulse capacitor is short time duty repeatedly, and Weaving type noninductive resistance rapid heat dissipation can carry out test of many times in short-term; Frequency modulation capacitor group, time delay capacitor group, frequency modulation resistance parameter range of adjustment are large; Pneumatic control makes test high voltage and control loop isolation, guarantees operator safety, has simultaneously Long-distance Control and local operation function, is conducive to laboratory automation control; It is little that this device also has floor area, advantage easy to maintenance.
Above-described embodiment is exemplary illustration principle of the present utility model and effect, but not is used for restriction the utility model.Any those skilled in the art all can be under the spirit and category of utility model, and above-described embodiment is modified and changed.Therefore, rights protection scope of the present utility model should be take the scope of claims as foundation.
Claims (2)
1. primary cut-out transient recovery voltage adjusting device, it is characterized in that, this device is the three-phase adjustment structure, each is comprised of two parts, comprise frequency modulation branch road that frequency modulation capacitor group and frequency modulation resistance are composed in series and time delay capacitor group in parallel, change frequency modulation branch road capacitance and resistance value, can regulate recovery voltage escalating rate and peak value; Change the time delay that time delay capacitor group capacitance can be regulated recovery voltage.
2. primary cut-out transient recovery voltage adjusting device according to claim 1, it is characterized in that, the frequency modulation capacitor group of every phase, frequency modulation resistance, time delay capacitor group are one group, totally nine groups of three-phases, wherein frequency modulation capacitor group, time delay capacitor group are comprised of DC pulse capacitor, frequency modulation resistance is comprised of the Weaving type noninductive resistance, the conversion mode of connection realizes the series connection of three-phase frequency modulation capacitor group, the series connection of time delay capacitor group, the connection in series-parallel of frequency modulation resistance, satisfies different electric pressure testing requirementss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243951 CN202854295U (en) | 2012-05-29 | 2012-05-29 | High-voltage circuit-breaker transient recovery voltage regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243951 CN202854295U (en) | 2012-05-29 | 2012-05-29 | High-voltage circuit-breaker transient recovery voltage regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854295U true CN202854295U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220243951 Expired - Lifetime CN202854295U (en) | 2012-05-29 | 2012-05-29 | High-voltage circuit-breaker transient recovery voltage regulation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202854295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485651A (en) * | 2014-12-18 | 2015-04-01 | 国家电网公司 | Circuit breaker transient recovery voltage inhibition system and method of 1000kV alternative-current filter group |
| CN106526473A (en) * | 2016-11-24 | 2017-03-22 | 华中科技大学 | Mechanical type high-voltage DC breaker on-off equivalent test loop and method |
| CN110531257A (en) * | 2019-08-28 | 2019-12-03 | 广安电气检测中心(广东)有限公司 | Four parameter transient recovery voltages (TRV) adjust circuit |
-
2012
- 2012-05-29 CN CN 201220243951 patent/CN202854295U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485651A (en) * | 2014-12-18 | 2015-04-01 | 国家电网公司 | Circuit breaker transient recovery voltage inhibition system and method of 1000kV alternative-current filter group |
| CN106526473A (en) * | 2016-11-24 | 2017-03-22 | 华中科技大学 | Mechanical type high-voltage DC breaker on-off equivalent test loop and method |
| CN110531257A (en) * | 2019-08-28 | 2019-12-03 | 广安电气检测中心(广东)有限公司 | Four parameter transient recovery voltages (TRV) adjust circuit |
| WO2021036114A1 (en) * | 2019-08-28 | 2021-03-04 | 广安电气检测中心(广东)有限公司 | Four-parameter transient recovery voltage (trv) regulating circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |