CN203056585U - Inrush current-free electronic switch - Google Patents
Inrush current-free electronic switch Download PDFInfo
- Publication number
- CN203056585U CN203056585U CN 201220202174 CN201220202174U CN203056585U CN 203056585 U CN203056585 U CN 203056585U CN 201220202174 CN201220202174 CN 201220202174 CN 201220202174 U CN201220202174 U CN 201220202174U CN 203056585 U CN203056585 U CN 203056585U
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- Prior art keywords
- zero
- radiator
- modules
- electronic switch
- thyristor
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- Expired - Lifetime
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- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 abstract description 40
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000036632 reaction speed Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Emergency Protection Circuit Devices (AREA)
Abstract
Provided is an inrush current-free electronic switch, comprising three zero-crossing trigger modules and three thyristor modules respectively arranged on a front side of a radiator; the three zero-crossing trigger modules are respectively in connection with the three thyristor modules; the bottom of the radiator is provided with a fan; one side of the radiator is respectively provided with a set of five-position terminal strips, a temperature control switch and a set of two-position terminals from top to down; the other side of the radiator is respectively provided with a capacitance-resistance absorbing device and current limiting reactor from top to bottom. The active effects are that the inrush current-free electronic switch employs the zero-crossing trigger technology; the zero-crossing trigger modules of the inrush current-free electronic switch have zero-crossing detection function; capacitor sets can be inputted with zero differential pressure and cut with zero current; no inrush current generates when capacitors are inputted and no overvoltage generates in cutting of the capacitors; no arcs are reignited, reaction speed is fast, switching speed is rapid, service life is long and reliability is high.
Description
Technical field
The utility model relates to a kind of switched capacitor, especially a kind of no-flashy-flow electronic switch for the reactive-load dynamic compensation opening-closing capacitor bank.
Background technology
The existing low-voltage reactive compensator capable of China adopts contactor grouping switching capacitor more, contactor grouping switching capacitor is when capacitor is connected, capacitor produces the transient state charging process, capacitor is equivalent to short circuit, very big inrush phenomenon occurs, the multiple that shoves is relevant with the performance of the size of inductive load, impedance, capacitor volume and A.C. contactor; Simultaneously with very high power frequency vibration, (namely with the transformer of feed and to be connected lead relevant) that this frequency is determined by the reactance in line voltage, capacitor volume and the circuit.The inrush phenomenon of capacitor combined floodgate moment generation, its duration is short, just can be reduced to harmless degree in several milliseconds.The maximum inrush phenomenon that the inrush phenomenon that general capacitor produces all allows less than modern switchgear.Though the inrush phenomenon decay is fast, but it is poor to some switching characteristic, closing speed is slow, in making process, when contact not closed just generation still punctures electric arc, switching current is sharply risen, to produce very big electric current when serious, frequency of oscillation is very high in addition, makes the inner very big mechanical stress of generation of switch and vibrations, and switch is damaged.Contactor grouping switching capacitor when capacitor excises, easily produces overvoltage.In addition, adopt the contactor opening-closing capacitor bank, because contactor is mechanical contact, dynamic responding speed is slow, and for the fast place of load fluctuation, compensation does not often reach expected effect.The switch of mechanical contact is subjected to the restriction of mechanical endurance, can not frequent operation, the only reactive power compensation of suitable steady load.
The utility model content
Technical problem to be solved in the utility model provides a kind of no-flashy-flow electronic switch.
For solving the problems of the technologies described above, the utility model is realized as follows: a kind of no-flashy-flow electronic switch comprises three zero cross fired modules, one group of radiator, three thyristor modules, one group five terminal board, temp control switch, one group two terminal, fan, capacitance-resistance absorption plant and current limiting reactor; Be respectively arranged with three zero cross fired modules and three thyristor modules in the front of radiator, three zero cross fired modules are connected with three thyristor modules respectively; Be equiped with a fan in the bottom of radiator; Be equiped with one group five terminal board, temp control switch, one group two terminal from top to bottom respectively in a side of radiator; Opposite side at radiator is equiped with capacitance-resistance absorption plant and current limiting reactor from top to bottom respectively.
Good effect of the present utility model is: the no-flashy-flow electronic switch adopts the zero cross fired technology, the zero cross fired module of no-flashy-flow electronic switch has the zero passage detection function, homodyne is pressed and is dropped into the capacitor group, zero current excision capacitor group, no-flashy-flow when capacitor drops into, there is not overvoltage during excision, no arc reignition, reaction speed is fast, the switching speed height, long service life, the reliability height.
Description of drawings
Fig. 1 is the structural representation of a kind of example of the utility model
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, no-flashy-flow electronic switch described in the utility model comprises three zero cross fired modules 1, one group of radiator 2, three thyristor modules 3, one group five terminal board 4, temp control switch 5, one group two terminal 6, fan 7, capacitance-resistance absorption plant 8 and current limiting reactor 9.Be respectively arranged with three zero cross fired modules 1 in the front of radiator 2 and 3, three zero cross fired modules 1 of three thyristor modules are connected with three thyristor modules 3 respectively.Be equiped with a fan 7 in the bottom of radiator 2; Be equiped with one group five terminal board 4, temp control switch 5, one group two terminal 6 from top to bottom respectively in a side of radiator 2; Opposite side at radiator 2 is equiped with capacitance-resistance absorption plant 8 and current limiting reactor 9 from top to bottom respectively.
Three thyristor modules 3 are important component parts of novel switched capacitor no-flashy-flow electronic switch, trigger thyristor through the zero passage module, by break-make input or the excision capacitor group of thyristor.
Capacitance-resistance absorption plant 8 is the overvoltage surges that absorb the thyristor two ends, thyristor is had the effect of overvoltage protection.
Current limiting reactor 9 is the surge overcurrents that absorb thyristor, thyristor is had the effect of overcurrent protection.
Two groups of terminal boards 4 are used for connecting the secondary connection of novel no-flashy-flow electronic switch.
Operation principle: the operation principle of using novel dynamic electron switch on-off capacitor group is the electric current and voltage by the idle compensating control automatic checkout system, the reactive power of Automatic computing system, size according to reactive power, send the switching order and give the zero cross fired module, the zero cross fired module detects capacitor voltage at both ends automatically, when being zero, the capacitor voltage at both ends difference triggers the thyristor conducting, drop into the capacitor group, when system's capacitive reactive power during greater than lagging reactive power, triggering signal disconnects, during the condenser current zero passage, thyristor turn-offs.
The course of work: when zero passage module 1 received the switched capacitor signal that controller sends, the zero passage module detected the zero crossing of controllable silicon both end voltage automatically, when the voltage at thyristor module 3 two ends is zero, triggered the thyristor module conducting, dropped into capacitor.
Adopt the utility model to compare with existing switched capacitor switch and can obtain following effect:
(1) adopts the mode of zero cross fired to trigger thyristor, avoided the overvoltage of capacitor that shoves and produce when excising of the fashionable generation of capacitor group switching.Overvoltage and overcurrent can make capacitor life-span shorten, and adopt this switch on-off capacitor group, can prolong the useful life of capacitor, and the device security reliability improves.
Do not produce harmonic wave when (2) adopting the compensation arrangement work of novel no-flashy-flow electronic switch switched capacitor, do not cause voltage waveform distortion, do not produce throw in-of oscillation or switching shoves, do not pollute electrical network;
(3) capacitor group switching need not discharge, the capacitor group being cut take advantage of a crack improves more than 3000 times every response speed than existing country and industry standard, can be fast, the dynamic compensation impact load, suppress the voltage big ups and downs, improve quality of voltage, increase equipment is exerted oneself, and reduces power loss, improve quality and output that industrial products are produced, prolong the useful life of power supplying and distributing equipment.
(4) adopt novel no-flashy-flow electronic switch opening-closing capacitor bank, dynamic real-Time Compensation, tracking effect is good, makes the power factor of compensation point close to 1, can reduce the loss of circuit and transformer, has increased exerting oneself of power supplying and distributing equipment again.
(5) capacitor device of the novel switched capacitor no-flashy-flow electronic switch switching of employing, have environmental protection and energy-efficient superior technical characteristic, make increasings of exerting oneself of all power devices that insert same grid nodes, life-span prolong, quality and the output raising of production.Thereby, give when bringing direct considerable economic benefit for electricity consumption enterprise, also bring the huge social benefit indirectly.
(6) novel no-flashy-flow electronic switch has been taked the capacitance-resistance absorption on the basis of original thyristor switch, has been installed measure such as current limiting reactor additional, and the no-flashy-flow electronic switch has been carried out overvoltage, overcurrent protection.
Claims (1)
1. no-flashy-flow electronic switch, it is characterized in that, comprise three zero cross fired modules, one group of radiator, three thyristor modules, one group five terminal board, temp control switch, one group two terminal, fan, capacitance-resistance absorption plant and current limiting reactor; Be respectively arranged with three zero cross fired modules and three thyristor modules in the front of radiator, three zero cross fired modules are connected with three thyristor modules respectively; Be equiped with a fan in the bottom of radiator; Be equiped with one group five terminal board, temp control switch, one group two terminal from top to bottom respectively in a side of radiator; Opposite side at radiator is equiped with capacitance-resistance absorption plant and current limiting reactor from top to bottom respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202174 CN203056585U (en) | 2012-05-08 | 2012-05-08 | Inrush current-free electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202174 CN203056585U (en) | 2012-05-08 | 2012-05-08 | Inrush current-free electronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203056585U true CN203056585U (en) | 2013-07-10 |
Family
ID=48739505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220202174 Expired - Lifetime CN203056585U (en) | 2012-05-08 | 2012-05-08 | Inrush current-free electronic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203056585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628050A (en) * | 2020-12-18 | 2021-04-09 | 陕西航空电气有限责任公司 | Method for determining withstand voltage value of boost capacitor of aircraft engine ignition circuit |
-
2012
- 2012-05-08 CN CN 201220202174 patent/CN203056585U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628050A (en) * | 2020-12-18 | 2021-04-09 | 陕西航空电气有限责任公司 | Method for determining withstand voltage value of boost capacitor of aircraft engine ignition circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Shenyang Huifeng Electric Power Automation Co.,Ltd. Zhu Lanying Document name: Notification to Go Through Formalities of Registration |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: SHENYANG HUIFENG ELECTRIC POWER AUTOMATION Co.,Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
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| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Lanying Document name: Notice of expiration and termination of patent right |
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| DD01 | Delivery of document by public notice |