CN202190081U - Reactive compensation device - Google Patents
Reactive compensation device Download PDFInfo
- Publication number
- CN202190081U CN202190081U CN 201120335211 CN201120335211U CN202190081U CN 202190081 U CN202190081 U CN 202190081U CN 201120335211 CN201120335211 CN 201120335211 CN 201120335211 U CN201120335211 U CN 201120335211U CN 202190081 U CN202190081 U CN 202190081U
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- CN
- China
- Prior art keywords
- switch
- reactive power
- capacitor
- power compensator
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
Abstract
The utility model discloses a reactive compensation device which is designed for solving the problem that the existing devices have the disadvantage that the service life of a capacitor is affected by the surge current. The reactive compensation device comprises a capacitor group, a switch unit, a controller, a knife fuse switch and a lightening arrester, wherein the capacitor group consists of three capacitors; the switch unit is connected with equipment to be compensated; the switch unit comprises an air switch and a switching switch, which are connected in series; the switching switch is a contactless switch formed by a contactor or two anti-parallel thyristors; and the controller is used for computing reactive power through two phases of voltages and one phase of current and controlling the switch unit. Through the reactive compensation device provided by the utility model, the voltages at the two ends are controlled when the thyristors are turned on, so that the surge current is well controlled, the structure is reasonable, and the performance is favorable.
Description
Technical field
The utility model relates to a kind of reactive power compensator.
Background technology
Usually can exist motor, phase control rectifier, frequency converter, lathe, ac arc furnace and ac arc wedling machine etc. can produce in the circuit of a large amount of idle harmonic in the Circuits System, or under single-phase and three-phase equilibrium and uneven load condition of mixing, use.The selection that is inevitable of using compensation device, compensation arrangement relatively more commonly used now is a contactor formula compensation arrangement.
The inventor has found the control of contactor formula compensation arrangement not shoves; The electric current that drops into the moment generation at capacitor can be than capacitor rated current big tens times or hundreds of times; Can the many withstand voltage weak spot of capacitor plate be punctured simultaneously, causing can't storage of electrical energy, influences the useful life of capacitor.The problems referred to above cause the contactor formula capacitor cannot frequent switching.
The utility model content
In order to overcome above-mentioned defective, the reactive power compensator that the utility model provides a kind of control effectively to shove.
For achieving the above object, the utility model reactive power compensator comprises: capacitance group connects the switch element of said capacitance group and the controller of control switch unit; The other end of said switch element connects equipment to be compensated; Said switch element comprises the air switch and the fling-cut switch of series connection, and said fling-cut switch is contactor or noncontacting switch.
Particularly, said capacitance group comprises three electric capacity, and two electric capacity in the two ends of each electric capacity and other are connected, and forms three-phase corner connection structure.
Particularly, said noncontacting switch comprises antiparallel two thyristors.
Particularly, said controller calculates reactive power, control switch unit through two phase voltages with another electric current mutually.
Particularly, said device also comprises and is used for the switch with knifeshaped fuse isolated with electric power system, and the lightning arrester that is used for the surge voltage protection.
The utility model reactive power compensator adopts contactor or noncontacting switch as fling-cut switch; Use special-purpose zero cross fired module; When owing in the system to mend (perception is idle greater than capacitive reactive power in the system); This module is accepted can catch the thyristor voltage automatically behind the trigger command, when the voltage conforms set point, triggers thyristor, makes the thyristor conducting drop into capacitor.The 1.5-1.7 that shoving of producing is merely the capacitor rated current doubly, the voltage at two ends when having controlled the thyristor conducting, thus better controlled shove.
The utility model reactive power compensator also comprises functional units such as switch with knifeshaped fuse and lightning arrester, and is rational in infrastructure, functional.
Description of drawings
Fig. 1 is the utility model preferred structure sketch map.
Embodiment
Below in conjunction with Figure of description and embodiment the utility model is done detailed description.
As shown in Figure 1, the utility model reactive power compensator comprises: capacitance group 1 connects the switch element 2 of said capacitance group 1 and the controller 3 of control switch unit 2; The other end of switch element 2 connects equipment to be compensated; Switch element 2 comprises the air switch 4 and the fling-cut switch of series connection, and fling-cut switch is contactor 5 or noncontacting switch 6.
The utility model reactive power compensator adopts contactor or noncontacting switch as fling-cut switch; Use special-purpose zero cross fired module; When owing in the system to mend (perception is idle greater than capacitive reactive power in the system); This module is accepted can catch the thyristor voltage automatically behind the trigger command, triggers thyristor when voltage conforms set point (being generally 2V-6V), makes the thyristor conducting drop into capacitor.The 1.5-1.7 that shoving of producing is merely the capacitor rated current doubly, the voltage at two ends when having controlled the thyristor conducting, thus better controlled shove.
Capacitance group 1 in the said structure comprises three electric capacity 8, and two electric capacity 8 in the two ends of each electric capacity 8 and other are connected, and forms three-phase corner connection structure.Two electric capacity 8 connecting places form node, and each capacitance group always has 3 nodes, and node connects switch element 2.
The utility model reactive power compensator is parallel in the electric power system with the equipment that needs compensation; Isolate through switch with knifeshaped fuse and system; Do the surge voltage protection with lightning arrester, the below comprises the capacitor group of n route contactor switching and the capacitor group that m-n route noncontacting switch is formed.Every road is by air switch, and fling-cut switch (contactor or noncontacting switch) and capacitors in series are formed, and controller adopts two phase voltages and another phase current to calculate the switching that reactive power is judged the capacitor group.
The utility model reactive power compensator adopts two-way anti-parallel thyristor, realizes operating passing zero, and no impact, no-flashy-flow, no overvoltage, no harmonic wave are realized contactless electronic beam switch control three-phase power capacitor, and switch life prolongs greatly.Switching speed is fast, accomplishes the switching of capacitor within the 10ms.The utility model reactive power compensator series inductance prevents that harmonic wave from amplifying, the absorption portion harmonic current.Can independently select manual or automatic switching as required, convenient and flexible operation.
The utility model reactive power compensator also is provided with multiple warning function, and the outage auto restore facility can fast acting fuse overcurrent protection and warning.Full-digital control detects and calculates the reactive power amount in real time, shows the switching way, indication operating mode, dynamic display system power factor, voltage, electric current, frequency, power quality parameter such as idle.
Idle compensating control is the auxiliary products of reactive power compensator, also can use separately as measuring instrument.It adopts advanced control theory and strategy and unique fitting operation mode; Overcome controller power-factor measurement accuracy rating that user in the past proposes little with defective such as controller misoperation; Assurance is with the action frequency of minority; Obtain best compensation effect, be specially adapted to specification requirement higher, need unattended operation, load variations acutely to reach the more abominable place of power supply environment.
The reactive power compensator noncontacting switch is a kind of electron type power device that can carry out quick switching to capacitor, and this device main circuit adopts the anti-parallel thyristor module, and with devices such as zero passage module, warm empty switch, fans.The installation of this device, wiring, maintenance are simple and convenient, no-flashy-flow, no overvoltage during switched capacitor, noiseless during work.
The used capacitor of the utility model reactive power compensator is a medium with the polypropylene screen of single face corona treatment, uses an end to approach the thick trapezoidal plating process vapor deposition one deck Ag-Zn plated film on polypropylene screen of an end.Compare with AI plated film capacitor, improved the anti-ability of shoving of capacitor, effectively prolonged the useful life of capacitor.Outside at metallized capacitor; Utilize sutomatic winding machine directly and connect an aluminium foil capacitor that capacity is very little; The high heat that when metallized capacitor punctures, produces like this punctures the aluminium foil condenser dielectric rapidly, forms zero resistance, makes the interior fuse action of series connection; Thereby make the assembly of damage out of service, improved protective capability greatly capacitor.
This capacitor uses epoxy encapsulation assembly monomer, normal temperature cure, and the enclosure interior space is full of volume compressible solid particle---vermiculite.The impact energy that when assembly takes place to puncture, is produced is absorbed by vermiculite, locates shell and deformation can not take place.In addition, vermiculite is incombustible mineral matter, is full of in the shell to make air capacity seldom behind the space, and therefore, capacitor can not blasted.Capacitor integral body is dry construction, seepage and contaminated environment can not take place.
More than; Be merely the preferred embodiment of the utility model; But the protection range of the utility model is not limited thereto; Any technical staff who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection range of the utility model.Therefore, the protection range of the utility model should be as the criterion with the protection range that claim was defined.
Claims (5)
1. a reactive power compensator is characterized in that, said device comprises: capacitance group connects the switch element of said capacitance group and the controller of control switch unit; The other end of said switch element connects equipment to be compensated; Said switch element comprises the air switch and the fling-cut switch of series connection, and said fling-cut switch is contactor or noncontacting switch.
2. reactive power compensator according to claim 1 is characterized in that: said capacitance group comprises three electric capacity, and two electric capacity in the two ends of each electric capacity and other are connected, and forms three-phase corner connection structure.
3. reactive power compensator according to claim 1 is characterized in that: said noncontacting switch comprises antiparallel two thyristors.
4. reactive power compensator according to claim 1 is characterized in that: said controller calculates reactive power, control switch unit through two phase voltages with another electric current mutually.
5. reactive power compensator according to claim 1 is characterized in that: said device also comprises and is used for the switch with knifeshaped fuse isolated with electric power system, and the lightning arrester that is used for the surge voltage protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120335211 CN202190081U (en) | 2011-09-07 | 2011-09-07 | Reactive compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120335211 CN202190081U (en) | 2011-09-07 | 2011-09-07 | Reactive compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202190081U true CN202190081U (en) | 2012-04-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120335211 Expired - Fee Related CN202190081U (en) | 2011-09-07 | 2011-09-07 | Reactive compensation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202190081U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959299A (en) * | 2017-12-22 | 2018-04-24 | 中国二冶集团有限公司 | Fixed value reactive power compensator |
| CN107968412A (en) * | 2017-07-11 | 2018-04-27 | 三峡大学 | A kind of follow-on thyristor switchable capacitor and control method |
| CN108375702A (en) * | 2017-12-01 | 2018-08-07 | 国网北京市电力公司 | The monitoring method and device of electric heating equipment |
-
2011
- 2011-09-07 CN CN 201120335211 patent/CN202190081U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968412A (en) * | 2017-07-11 | 2018-04-27 | 三峡大学 | A kind of follow-on thyristor switchable capacitor and control method |
| CN108375702A (en) * | 2017-12-01 | 2018-08-07 | 国网北京市电力公司 | The monitoring method and device of electric heating equipment |
| CN108375702B (en) * | 2017-12-01 | 2021-05-07 | 国网北京市电力公司 | Monitoring method and device for electric heating equipment |
| CN107959299A (en) * | 2017-12-22 | 2018-04-24 | 中国二冶集团有限公司 | Fixed value reactive power compensator |
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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: 20120411 Termination date: 20120907 |