CN202906453U - Capacitor zero-crossing switching switch device - Google Patents
Capacitor zero-crossing switching switch device Download PDFInfo
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- CN202906453U CN202906453U CN 201220515108 CN201220515108U CN202906453U CN 202906453 U CN202906453 U CN 202906453U CN 201220515108 CN201220515108 CN 201220515108 CN 201220515108 U CN201220515108 U CN 201220515108U CN 202906453 U CN202906453 U CN 202906453U
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Abstract
The utility model discloses a capacitor zero-crossing switching switch device, comprising a high-voltage capacitor pre-switch-on loop and a vacuum switch, the high-voltage capacitor pre-switch-on loop comprise a disconnecting switch, a current-limiting resistance, and a silicon controlled rectifier zero-crossing switch-on loop, one end of the disconnecting switch is connected with an electric network bus, the other end is connected with the current-limiting resistance, the current-limiting resistance is connected with the silicon controlled rectifier zero-crossing switch-on loop, the high-voltage capacitor pre-switch-on loop and a vacuum switch are in a parallel connection and disposed in a major loop. Via adding of the high-voltage capacitor pre-switch-on loop in the major loop, switch-on inrush current of the high voltage capacitor is eliminated, restrike overvoltage caused during breaking of a vacuum circuit breaker is prevented, and electrical devices are effectively protected.
Description
Technical field
The utility model relates to the electric switch field, particularly a kind of capacitor operating passing zero switching device.
Background technology
In electric power system, reactive power is used for setting up magnetic field, and in return energy uses, and they are magnetic field by electric energy conversion, is transformed by magnetic field and is changed to electric energy.But reactive power is not useless merit, there is not this part power, just can not set up induced field, the power consumption equipments such as motor transformer are with regard to cisco unity malfunction, and the compensation principle of reactive power compensation is to mend less, it is excessive to compensate, after such reactive power compensation entered, reduce line current, can improve power factor (PF), improve power quality, the capacitor switching switching device in the electric power system in the reactive power compensation generally is applied.
Existing high-voltage capacitor fling-cut switch is mainly vacuum circuit-breaker or high-pressure vacuum switch, for suppressing to shove, suppresses to shove at the reactor of capacitor major loop series connection about 1%.But it is large to shove in this capacitor switching switch input process, drops in the disadvantageous situation of angle, is easy to the uncontrollable of distribution of shoving.Be easy to during the vacuum circuit-breaker disjunction cause the overvoltage of restriking, can damage electric equipment under the extreme case.
The utility model content
The technical problem that (one) will solve
The technical problems to be solved in the utility model is: it is excessive to shove in the capacitor input process, dropping in the disadvantageous situation of angle, uncontrollable shoving occurs easily.Be easy to during the vacuum circuit-breaker disjunction cause the overvoltage of restriking, can damage electric equipment under the extreme case.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of capacitor operating passing zero switching device, it is characterized in that, comprise high-voltage capacitor pre-cast loop and vacuum switch, described high-voltage capacitor pre-cast loop comprises that isolating switch, current-limiting resistance, silicon control zero-cross drop into the loop, described isolating switch one end is connected with the electrical network bus, the other end links to each other with described current-limiting resistance, current-limiting resistance drops into the loop with described silicon control zero-cross and is connected, and described high-voltage capacitor pre-cast loop and vacuum switch are arranged in parallel on major loop.
Described vacuum switch is vacuum contactor or vacuum circuit-breaker.
Described isolating switch comprises main isolating switch and auxiliary isolator.
Described silicon control zero-cross drops into the loop and is made of divider resistance, zero passage switch and zero passage control module, and described divider resistance and described zero passage switch are arranged in parallel, and described zero passage switch links to each other with the zero passage control module.
The described silicon control zero-cross of many groups is set drops into the loop, described many group silicon control zero-cross drop into mutually series connection between the loop.
Be provided with fuse on the described major loop.
(3) beneficial effect
The input that a kind of capacitor operating passing zero switching device that the utility model provides has been eliminated high-voltage capacitor is shoved, and the overvoltage of restriking that has caused when having eliminated the vacuum switch disjunction has been protected electric equipment effectively.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model capacitor operating passing zero switching device.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting the scope of the invention.
Capacitor operating passing zero switching device comprises high-voltage capacitor pre-cast loop and vacuum switch as shown in Figure 1, high-voltage capacitor pre-cast loop comprises that isolating switch, current-limiting resistance, silicon control zero-cross drop into the loop, described isolating switch one end is connected with the electrical network bus, the other end links to each other with described current-limiting resistance, current-limiting resistance drops into the loop with described silicon control zero-cross and is connected, and described high-voltage capacitor pre-cast loop and vacuum switch are arranged in parallel on major loop.
Vacuum switch is that vacuum contactor or vacuum circuit-breaker isolating switch comprise main isolating switch and auxiliary isolator, silicon control zero-cross drops into the loop and is made of divider resistance, zero passage switch and zero passage control module, divider resistance and described zero passage switch are arranged in parallel, and zero passage switch links to each other with the zero passage control module.
Main isolating switch is connected with the electrical network bus, and auxiliary isolator links to each other with main isolating switch, controls by main isolating switch and auxiliary isolator when high-voltage capacitance drops into or cut off.The other end of auxiliary isolator is connected with current-limiting resistance, and current limliting is carried out in the loop.Each divider resistance and zero passage switch are arranged in parallel, and are consistent with the zero passage switch operating voltage that guarantees series connection, and zero passage switch is connected with the zero passage control module.When many group silicon control zero-cross inputs loop is set as required, organizes silicon control zero-cross more and drop into mutually series connection between the loop.Divider resistance, zero passage switch and zero passage control module connect and compose silicon control zero-cross and drop into the loop.The divider resistance that is dropped in the loop by silicon control zero-cross carries out dividing potential drop to the loop, be connected connection with the zero passage control module by zero passage switch, to drop into or when excising capacitor signal having, connect auxiliary isolator, provide zero passage module connection signal at voltage over zero, guarantee that whole circuit starts working at point of zero voltage, vacuum switch finish drop into or excision after, the zero passage module state of deactivating, auxiliary isolating switch withdraws from closure state.By the work of zero passage switch, can eliminate the high-voltage capacitor input and shove, the limiting capacitance device excises the overvoltage of restriking.High-voltage capacitor pre-cast loop and vacuum switch are arranged in parallel on major loop, realize the maintenance of vacuum switch.
A kind of preferred embodiment of the present utility model is at major loop one fuse to be set in the constant situation of All other routes, realizes the multiple protective of loop safety by fuse.
In the work:
1, before high-voltage capacitor drops into, high-voltage capacitor pre-cast loop is connected, and isolating switch, current-limiting resistance, silicon control zero-cross drop into the loop to begin to carry out work, and the input of eliminating high electric capacitor is shoved;
2, after the pre-cast loop was connected, vacuum switch was closed, and major loop is connected;
3, disjunction pre-cast loop, the disjunction isolating switch cuts off the zero cross fired pulse;
4, before high-voltage capacitor excision, high-voltage capacitor pre-cast loop is connected, and isolating switch, current-limiting resistance, silicon control zero-cross drop into the loop to begin to carry out work, the excision of the eliminating high electric capacitor overvoltage of restriking;
5, cut off the zero cross fired pulse, isolating switch is assisted in disjunction, disjunction pre-cast loop.
Above execution mode only is used for explanation the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (6)
1. capacitor operating passing zero switching device, it is characterized in that, comprise high-voltage capacitor pre-cast loop and vacuum switch, described high-voltage capacitor pre-cast loop comprises that isolating switch, current-limiting resistance, silicon control zero-cross drop into the loop, described isolating switch one end is connected with the electrical network bus, the other end links to each other with described current-limiting resistance, and current-limiting resistance drops into the loop with described silicon control zero-cross and is connected, and described high-voltage capacitor pre-cast loop and vacuum switch are arranged in parallel on major loop.
2.
According toA kind of capacitor operating passing zero switching device claimed in claim 1 is characterized in that described vacuum switch is vacuum contactor or vacuum circuit-breaker.
3.
According toA kind of capacitor operating passing zero switching device claimed in claim 1 is characterized in that described isolating switch comprises main isolating switch and auxiliary isolator.
4.
According toA kind of capacitor operating passing zero switching device claimed in claim 1, it is characterized in that, described silicon control zero-cross drops into the loop and is made of divider resistance, zero passage switch and zero passage control module, described divider resistance and described zero passage switch are arranged in parallel, and described zero passage switch links to each other with the zero passage control module.
5.
According toA kind of capacitor operating passing zero switching device claimed in claim 4 is further characterized in that, the described silicon control zero-cross of many groups is set drops into the loop, and described many group silicon control zero-cross drop into mutually series connection between the loop.
6.
According toA kind of capacitor operating passing zero switching device claimed in claim 1 is characterized in that, is provided with fuse on the described major loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220515108 CN202906453U (en) | 2012-09-29 | 2012-09-29 | Capacitor zero-crossing switching switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220515108 CN202906453U (en) | 2012-09-29 | 2012-09-29 | Capacitor zero-crossing switching switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202906453U true CN202906453U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220515108 Expired - Fee Related CN202906453U (en) | 2012-09-29 | 2012-09-29 | Capacitor zero-crossing switching switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202906453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363107A (en) * | 2021-05-20 | 2021-09-07 | 中电新源(廊坊)电气集团有限公司 | High-voltage switch transformer combined electrical apparatus capable of being switched frequently |
-
2012
- 2012-09-29 CN CN 201220515108 patent/CN202906453U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363107A (en) * | 2021-05-20 | 2021-09-07 | 中电新源(廊坊)电气集团有限公司 | High-voltage switch transformer combined electrical apparatus capable of being switched frequently |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20170929 |