CN204905874U - Well high voltage electric network distributing type cascade compensation system - Google Patents
Well high voltage electric network distributing type cascade compensation system Download PDFInfo
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- CN204905874U CN204905874U CN201520647475.XU CN201520647475U CN204905874U CN 204905874 U CN204905874 U CN 204905874U CN 201520647475 U CN201520647475 U CN 201520647475U CN 204905874 U CN204905874 U CN 204905874U
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- compensation capacitor
- series compensation
- cascade compensation
- compensation condenser
- current limliting
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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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Abstract
The utility model relates to a well high voltage electric network distributing type cascade compensation system, it is including installing the cascade compensation condenser in the switch board, parallelly connected mutually with the cascade compensation condenser for cascade compensation condenser short circuit protection back is released the discharge protection system of cascade compensation condenser electric energy, and is connected with the cascade compensation condenser, is used for the intelligence protection control system who protects the cascade compensation condenser not burnt out. The utility model discloses simple structure, safe and reliable are through the cascade compensation condenser to compensating circuit's distribution induction reactance has improved the stability of system, improves the voltage quality of circuit, increases power transmission distance and increase transmitting capacity, thereby has improved the comprehensive utilization of electric energy. Realize preventing to the duplicate protection of cascade compensation condenser that the cascade compensation condenser from damaging because of the excessive pressure through bidirectional thyristor and fast switch, ensure the normal safe operation of cascade compensation condenser.
Description
Technical field
The utility model relates to Power Network Compensation Technology field, is specifically related to a kind of mesohigh electrical network distributed serial bucking-out system.
Background technology
Along with expanding economy, the sharp increase of power load, the quality of voltage problem that mesohigh long distance transmission line brings comes out gradually.For the area that the density of population is less, radius of electricity supply is comparatively large, and transmission line is generally longer.When load is lighter in early days, still user demand can be met by terminal voltage; But along with social progress and economic development, heavy users constantly increases, load current pressure drop on the line obviously strengthens, cause the supply power voltage quality severe overweight to load, the line end voltage had during load peak only has 80% of rated voltage, cause neighbouring industry and residential electricity consumption equipment normally not to run, directly affects production and the life of this area people.
Utility model content
The purpose of this utility model is to provide a kind of mesohigh electrical network distributed serial bucking-out system, and this bucking-out system is safe, reliable, improves the comprehensive utilization ratio of electric energy.
For achieving the above object; the utility model have employed following technical scheme: comprise the series compensation capacitor be arranged in power distribution cabinet; be in parallel with series compensation capacitor; for after the protection of series compensation capacitor short circuit; the discharge prevention system of release series compensation capacitor electric energy; and be connected with series compensation capacitor, for the protection of the intelligent protection control system that series compensation capacitor is not burned.
Further; described discharge prevention system comprises current limliting damper and znr; described current limliting damper is connected on the end of incoming cables of series compensation capacitor; one end of described znr is connected with the end of incoming cables of current limliting damper, and its other end is connected with the leading-out terminal of series compensation capacitor.
Described current limliting damper is in parallel by inductance L and resistance R and forms, and this current limliting damper can limit the rear electric releasable impulse current of series compensation capacitor short circuit protection, plays a part to protect series compensation capacitor.
Further, described intelligent protection control system comprises high-speed switch, and described high-speed switch controls it by the controller be arranged in power distribution cabinet and cut-offs, and described high-speed switch is connected in parallel on the two ends of series compensation capacitor and current limliting damper.
Further, described high-speed switch is vacuum circuit-breaker.
Further, described intelligent protection control system also comprises bidirectional triode thyristor, and the first electrode of described bidirectional triode thyristor and the end of incoming cables of current limliting damper, its second electrode is connected with the leading-out terminal of series compensation capacitor, and its control end is connected with controller.
As shown from the above technical solution, the utility model structure is simple, safe and reliable, passes through series compensation capacitor, with the distribution induction reactance of compensated line, improve the stability of system, improve the quality of voltage of circuit, strengthen power transmission Distance geometry and increase conveying capacity, improve the comprehensive utilization ratio of electric energy.Realize the duplicate protection to series compensation capacitor by bidirectional triode thyristor and high-speed switch, prevent series compensation capacitor from damaging because of overvoltage; When discharge prevention system occurs overcurrent for circuit, series compensation capacitor is by after short circuit, and the electric energy in release series compensation capacitor, guarantees that series compensation capacitor normal safe runs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, the mesohigh electrical network distributed serial bucking-out system of the present embodiment, comprises the series compensation capacitor 11 be arranged in power distribution cabinet, discharge prevention system and intelligent protection control system.This discharge prevention system comprises current limliting damper 12 and znr 13; current limliting damper 12 is connected on the end of incoming cables of series compensation capacitor 11; one end of znr 13 is connected with the end of incoming cables of current limliting damper 12, and its other end is connected with the leading-out terminal of series compensation capacitor 11.In the present embodiment, current limliting damper 12 is in parallel by inductance L and resistance R and forms.
This current limliting damper 12, for limiting series compensation capacitor 11 short circuit protection rear electric energy release impulse current, prevents series compensation capacitor 11 from damaging due to overcurrent.This znr 13; can after the protection of series compensation capacitor 11 short circuit; the electric energy that rapid absorption series compensation capacitor 11 discharges; guarantee the terminal voltage of series compensation capacitor 11 to control within the scope of load rated safety, to limit the overvoltage problem of series compensation capacitor 11 under system short-circuit impacts.So series compensation capacitor 11 both end voltage can be limited in a lower level, the capacity of such series compensation capacitor 11 can reduce greatly, its cost can significantly reduce naturally, the volume of equipment obtains effective control simultaneously, can be implemented in system and carry out multiple spot compensation, the quality of voltage problem of solution electric power system long distance heavy load transmission of electricity that can be fully effective.
Intelligent protection control system comprises high-speed switch 14, and this high-speed switch 14 controls it by the controller be arranged in power distribution cabinet and cut-offs, and high-speed switch 14 is connected in parallel on the two ends of series compensation capacitor 11 and current limliting damper 12.When in circuit, electric current exceedes predetermined value, controller controls high-speed switch 14 immediately and closes a floodgate, thus effective protection series compensation capacitor 11, prevent series compensation capacitor 11 from damaging because of overvoltage.In the present embodiment, high-speed switch 14 is vacuum circuit-breaker.
In order to the fail safe of a progressive raising series compensation capacitor 11; in the present embodiment; intelligent protection control system also comprises bidirectional triode thyristor 15; first electrode of this bidirectional triode thyristor 15 and the end of incoming cables of current limliting damper 12; its second electrode is connected with the leading-out terminal of series compensation capacitor 11, and its control end is connected with controller.
Operation principle is as follows: when the terminal voltage of series compensation capacitor 11 exceed can two-way control silicon 15 time, this bidirectional triode thyristor 15 conducting, thus series compensation capacitor 11 short circuit, prevent series compensation capacitor 11 from damaging because of overvoltage; After series compensation capacitor 11 is protected, Intelligent discharge system is discharged to series compensation capacitor 11 immediately, the electric energy in release series compensation capacitor 11; When the terminal voltage of series compensation capacitor 11 drops to bidirectional triode thyristor 15 return voltage, bidirectional triode thyristor 15 disconnects immediately, and now high-speed switch 14 closes a floodgate, and this series compensation capacitor 11 is protected by high-speed switch 14; When after short trouble excision, when line current returns normal value, controller sends separating brake order, and high-speed switch 14 disconnects, and makes series compensation capacitor 11 drop into circuit and runs.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (6)
1. a mesohigh electrical network distributed serial bucking-out system; it is characterized in that: comprise the series compensation capacitor (11) be arranged in power distribution cabinet; be in parallel with series compensation capacitor (11); after the protection of series compensation capacitor (11) short circuit; discharge the discharge prevention system of its electric energy; and be connected with series compensation capacitor (11), for the protection of the intelligent protection control system that series compensation capacitor (11) is not burned.
2. mesohigh electrical network distributed serial bucking-out system according to claim 1; it is characterized in that: described discharge prevention system comprises current limliting damper (12) and znr (13); described current limliting damper (12) is connected on the end of incoming cables of series compensation capacitor (11); one end of described znr (13) is connected with the end of incoming cables of current limliting damper (12), and its other end is connected with the leading-out terminal of series compensation capacitor (11).
3. mesohigh electrical network distributed serial bucking-out system according to claim 2, is characterized in that: described current limliting damper (12) is in parallel by inductance L and resistance R and forms.
4. mesohigh electrical network distributed serial bucking-out system according to claim 1; it is characterized in that: described intelligent protection control system comprises high-speed switch (14); described high-speed switch (14) controls it by the controller be arranged in power distribution cabinet and cut-offs, and described high-speed switch (14) is connected in parallel on the two ends of series compensation capacitor (11) and current limliting damper (12).
5. mesohigh electrical network distributed serial bucking-out system according to claim 4, is characterized in that: described high-speed switch (14) is vacuum circuit-breaker.
6. mesohigh electrical network distributed serial bucking-out system according to claim 4; it is characterized in that: described intelligent protection control system also comprises bidirectional triode thyristor (15); first electrode of described bidirectional triode thyristor (15) and the end of incoming cables of current limliting damper (12); its second electrode is connected with the leading-out terminal of series compensation capacitor (11), and its control end is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647475.XU CN204905874U (en) | 2015-08-26 | 2015-08-26 | Well high voltage electric network distributing type cascade compensation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647475.XU CN204905874U (en) | 2015-08-26 | 2015-08-26 | Well high voltage electric network distributing type cascade compensation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905874U true CN204905874U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520647475.XU Expired - Fee Related CN204905874U (en) | 2015-08-26 | 2015-08-26 | Well high voltage electric network distributing type cascade compensation system |
Country Status (1)
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| CN (1) | CN204905874U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119299A (en) * | 2015-08-26 | 2015-12-02 | 安徽徽电科技股份有限公司 | Middle and high voltage power grid distributed series compensation system |
| CN105652130A (en) * | 2016-03-21 | 2016-06-08 | 成都天进仪器有限公司 | Intelligent power grid portable serial compensation tester |
| CN106786434A (en) * | 2016-11-16 | 2017-05-31 | 合肥普望电子有限责任公司 | A kind of superconductive failure current limiter |
| CN106849030A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
| CN106921167A (en) * | 2017-03-02 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield series compensation device based on high energy type fuse FU |
-
2015
- 2015-08-26 CN CN201520647475.XU patent/CN204905874U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119299A (en) * | 2015-08-26 | 2015-12-02 | 安徽徽电科技股份有限公司 | Middle and high voltage power grid distributed series compensation system |
| CN105119299B (en) * | 2015-08-26 | 2018-04-10 | 安徽徽电科技股份有限公司 | A kind of mesohigh power network distributed serial compensation system |
| CN105652130A (en) * | 2016-03-21 | 2016-06-08 | 成都天进仪器有限公司 | Intelligent power grid portable serial compensation tester |
| CN106786434A (en) * | 2016-11-16 | 2017-05-31 | 合肥普望电子有限责任公司 | A kind of superconductive failure current limiter |
| CN106849030A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of high-voltage and current-limitation device based on current limliting zinc oxide FR |
| CN106921167A (en) * | 2017-03-02 | 2017-07-04 | 安徽伊格瑞德电气设备有限公司 | A kind of self-shield series compensation device based on high energy type fuse FU |
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| 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 |
Granted publication date: 20151223 Termination date: 20180826 |
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| CF01 | Termination of patent right due to non-payment of annual fee |