CN201388060Y - Intelligent high-pressure reactive compensation device - Google Patents
Intelligent high-pressure reactive compensation device Download PDFInfo
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- CN201388060Y CN201388060Y CN200920013368U CN200920013368U CN201388060Y CN 201388060 Y CN201388060 Y CN 201388060Y CN 200920013368 U CN200920013368 U CN 200920013368U CN 200920013368 U CN200920013368 U CN 200920013368U CN 201388060 Y CN201388060 Y CN 201388060Y
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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 an intelligent high-pressure reactive compensation device which consists of a phase selection switching unit and a capacitor compensation unit group which are connected through a double-bus. The phase selection switching unit comprises a phase selection switching switch and a compensation controller; and the capacitor compensation unit group consists of a plurality of capacitor compensation units with same structures. The intelligent high-pressure reactive compensation device can achieve the phase selection switching of a plurality of groups of capacitors by using one phase selection switch. Overvoltage switching and inrush current switching are reduced, so that harmful impact to power networks is not generated and the service life of the capacitor compensation device is prolonged. Each capacitor group can be switched independently, i.e. onload capacitance regulation, so that larger reactive amplitude fluctuation of the power networks caused by noload capacitance regulation is avoided. The power consumption of the switch self and the cost of high-power heat radiation units thereof are reduced by adopting the semiconductor phase selection switch. By adopting a combined structure, the compensation capacity can be increased and reduced and the compensation accuracy can be changed according to the reactive demands; and the problems concerning cost, turbulence during the switching and compensation effect can be solved.
Description
Technical field
The utility model relates to a kind of intelligent high-pressure reactive compensation device, relate in particular to a kind of be used for high-voltage fence reactive power compensation in parallel select phase switching Electric capacity compensation device.
Background technology
At present high-voltage fence reactive power compensator in parallel includes: non-ly select phase switching compensation arrangement, select phase switching compensation arrangement and dynamically regulate compensation arrangement continuously.These compensation arrangements all be saved as high, a switching process disturbance, compensation effect this aspect three problem can not take into account the problem of solution.
The above-mentioned non-phase switching compensation arrangement that selects, the switching process has great impact to electrical network and compensation arrangement itself, unsuitable frequent switching.This class compensation arrangement impacts and the prolongation service life of equipment to reduce if reduce switching frequency, will not reach good compensation effect; If guarantee that compensation effect is provided with frequent switching electrical network is frequently impacted, just reduce greatly the useful life of equipment.Therefore the non-compensation arrangement of phase switching that selects only is fit to the occasion that reactive requirement changes does not need frequent switching slowly.
The above-mentioned phase switching compensation arrangement that selects adopts high accuracy mechanical phase-selecting switch or semiconductor phase-selecting switch, can avoid the overvoltage of switching process, overcurrent to impact.Owing to the phase-selecting switch cost is higher, how employing is uneconomical in the device of group switchings, has therefore also occurred having employing one to overlap the combination application technique of a phase-selecting switch and a cover preselection switch.This combination technique can only the no-load capacity transfer, fluctuating widely of electric network reactive-load can occur in the capacity transfer process.
Above-mentioned dynamically regulates compensation arrangement continuously by the adjusting to reactor, transformer, changes the no work output of compensation arrangement.Owing to adopt reactor, transformer and large power semiconductor device, make that the power loss of device self is very big, when improving power grid quality, consume bigger active power, high-power semiconductor device price and heat radiation cost are very high simultaneously, and being not suitable for energy-conservation is the application of main purpose.
The utility model content
The problem that the utility model exists at above-mentioned prior art and provide a kind of and only overlap phase-selecting switch with one, realize the intelligent high-pressure reactive compensation device cheaply that selects the phase switching of many group electric capacity, take into account this three aspects problem of cost, switching process disturbance and compensation effect that solved.This device selects phase switching high-voltage capacitor group, has avoided switching overvoltage and switching to shove, and electrical network is not produced harmful the impact, has also prolonged the Electric capacity compensation device life-span simultaneously; Each capacitor group is switching separately, and is promptly loaded capacity-regulated, avoided the electric network reactive-load that the no-load capacity transfer causes in the work to fluctuate widely; Select the phase fling-cut switch when switching, to carry work, deactivate behind the switching, can economize the power loss of swap switch itself and the cost of high-power heat-sink unit thereof for the compensation arrangement that adopts the semiconductor phase-selecting switch; Fabricated structure can realize the variation according to reactive requirement, increase and decrease compensation capacity and change compensation precision.
The technical scheme of the utility model intelligent high-pressure reactive compensation device is as follows:
A kind of intelligent high-pressure reactive compensation device is characterized in that: it is to select congenial cut unit and capacitance compensation unit group to connect and compose by two busbars by high pressure; High pressure selects congenial cut unit to comprise and selects phase fling-cut switch and compensating controller, selects the phase fling-cut switch to be connected with compensating controller by control line; Capacitance compensation unit group is to be made of a plurality of capacitance compensation unit with identical structure, and each capacitance compensation unit is provided with two high voltage connectors or high-voltage electric isolating switch, respectively as gating switch and operating switch; High pressure selects congenial cut unit to select phase switching capacitance compensation unit; Controller selects the gating switch of phase fling-cut switch and each capacitance compensation unit and the control loop of operating switch by the control line connection, send combination action control signal according to the electric network reactive-load demand, control the switching of each capacitor group, drop into simultaneously and excise after the capacitor group no-load grouping of each capacitance compensation unit, realize the no-load capacity transfer, or drop into separately and excise, realize loaded capacity-regulated.
Described capacitance compensation unit is arranged with adjacent capacitance compensation unit or high pressure by double-bus and is selected congenial cut unit to be connected, realize the dilatation combination of capacitance compensation unit, wherein a bus is a work carrying bus, another bus is a switching gating bus, the capacitance compensation unit is arranged along about straight line, or according to infield space requirement corner layout, to realize flexible topology.
The described phase fling-cut switch that selects only with a cover, adopts and selects the phase circuit breaker, selects phase contact or semiconductor phase-selecting switch, to realize selecting the phase switching in capacitor compensation unit switching process.
Described compensating controller is by some voltage transformers, current transformer and position of the switch state-detection sensing element, and the logic control device of forming by single-chip microcomputer or programmable controller PLC, industrial computer IPC, logical circuit, with by detection information, man-machine interface information and storage recall info, send combination action control signal after the comprehensive analysis processing, control each capacitor group no-load grouping and select the phase switching or select phase switching capacity transfer separately.
The beneficial effects of the utility model are:
1. low-cost: only with a cover phase-selecting switch, that realizes many group electric capacity selects the phase switching, need not every group of capacitance arrangement one and overlaps and select the phase fling-cut switch; Gating switch and operating switch are only done the no-load operation.
2. low disturbance: select phase switching high-voltage capacitor group, avoided switching overvoltage and switching to shove, electrical network is not produced harmful the impact, simultaneously to also having prolonged the Electric capacity compensation device life-span; Each capacitor group is switching separately, and is promptly loaded capacity-regulated, avoided the electric network reactive-load that the no-load capacity transfer causes in the work to fluctuate widely.
4. low-power consumption: select the phase fling-cut switch when switching, to carry work, deactivate behind the switching, can economize the power loss of swap switch itself and the cost of high-power heat-sink unit thereof for the compensation arrangement that adopts the semiconductor phase-selecting switch.
5. flexible configuration: fabricated structure, can realize the variation according to reactive requirement, increase and decrease compensation capacity and change compensation precision.
Description of drawings
Fig. 1 is the structural representation of the utility model intelligent high-pressure reactive compensation reactive power compensator.
Fig. 2 is the operation principle schematic diagram of the utility model intelligent high-pressure reactive compensation device.
Among the figure, 1, high pressure selects congenial cut unit, 2, the capacitor compensation unit, 3, switching gating bus, 4, work carrying bus, 5, select the phase fling-cut switch, 6, the high pressure inlet wire, 7, compensating controller, 8, operating switch, 9, the compensation condenser group, 10, gating switch.
Embodiment
Describe the utility model in detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model intelligent high-pressure reactive compensation device is to select congenial cut unit 1 and capacitance compensation unit group to connect and compose by two busbars by high pressure.Capacitance compensation unit group is to be made of a plurality of capacitance compensations unit 2, and each capacitance compensation unit 2 has identical structure, and same structure can expand to many groups.
High pressure selects congenial cut unit 1 inside to comprise that compensating controller 7 selects fling-cut switch 5 mutually with a cover three-phase, work carrying busbar selecting phase fling-cut switch 5 also extends connection capacitance compensation unit 2, select the output termination switching gating busbar of phase fling-cut switch 5, select phase fling-cut switch 5 also to extend and be connected to capacitance compensation unit 2, select phase fling-cut switch 5 to connect compensating controller 7 by control line.
Establish a gating switch 10 and an operating switch 8 in the capacitance compensation unit 2.Work carrying busbar connects operating switch 8 and extends and connects next group capacitance compensation unit; The logical switch 10 of switching gating busbar selecting also extends next group capacitance compensation unit of connection; The other end of gating switch 10 connects compensation condenser 9 with after the other end of operating switch 8 is connected.Gating switch 10 and operating switch 8 connect compensating controller 7 by control line.
What high pressure selected congenial cut unit 1 selects phase fling-cut switch 5, can be the phase selection permanent-magnetic vacuum circuit-breaker, also can be the semiconductor phase-selecting switch, and it realizes selecting the phase switching in the switching process of capacitor compensation unit.
Compensating controller 7 selects the gating switch 10 of phase fling-cut switch 5 and each capacitance compensation unit 2 and the control loop of operating switch 8 by the control line connection.
Compensating controller 7 comprises checkout gear and control device, checkout gear is made up of some voltage transformer pts, current transformer CT and position of the switch state-detection sensing element, checkout gear detects the state of each switch and each point voltage, phase place, gives control device; The logic control device that control device is made up of single-chip microcomputer, programmable controller PLC, industrial computer IPC or logical circuit, the information that logic control device detects checkout gear, man-machine interface information and storage recall info, carry out comprehensive analysis processing, send combination action control signal according to the electric network reactive-load demand, control the switching of each capacitor group 9; The capacitor group 9 of each capacitor compensation unit 2 can select the phase unperturbed to drop into and excision after the no-load grouping simultaneously, realizes the no-load capacity transfer, also can select the phase unperturbed to drop into separately and excision, realizes loaded capacity-regulated.
Claims (5)
1, a kind of intelligent high-pressure reactive compensation device is characterized in that: it is by selecting congenial cut unit and capacitance compensation unit group to connect and compose by double-bus; Select congenial cut unit to comprise and select phase fling-cut switch and compensating controller, select the phase fling-cut switch to be connected with compensating controller by control line; Capacitance compensation unit group is to be made of several capacitance compensation unit with identical structure, and each capacitance compensation unit is provided with two switches, respectively as gating switch and operating switch; Article one, bus is as inlet wire, selecting phase fling-cut switch, the operating switch that connects each capacitance compensation unit simultaneously, select the other end of phase fling-cut switch to link to each other the other end of another termination operating switch of the gating switch of each capacitance compensation unit and compensation condenser group with the gating switch of each capacitance compensation unit by the second bus; Compensating controller selects the gating switch of phase fling-cut switch and each capacitance compensation unit and the control loop of operating switch by the control line connection, send combination action control signal according to the electric network reactive-load demand, control the switching of each capacitor group, select simultaneously after the capacitor group no-load grouping of each capacitance compensation unit and drop into and select excision mutually mutually, realize the no-load capacity transfer, or choosing drops into mutually and selects excision mutually separately, realizes loaded capacity-regulated.
2, intelligent high-pressure reactive compensation device according to claim 1 is characterized in that: the described capacitance compensation unit same structure of group can expand to many groups.
3, intelligent high-pressure reactive compensation device according to claim 1, it is characterized in that: described capacitance compensation unit selects congenial cut unit to be connected by double-bus with adjacent capacitance compensation unit or high pressure, realize the dilatation combination of capacitance compensation unit, wherein article one bus is a work carrying bus, the second bus is a switching gating bus, the capacitance compensation unit arranges along about straight line, or arranges according to infield space requirement corner, to realize flexible topology.
4, intelligent high-pressure reactive compensation device according to claim 1, it is characterized in that: the described phase fling-cut switch that selects, only, adopt and select the phase circuit breaker, select phase contact or semiconductor phase-selecting switch, in capacitor compensation unit switching process, to realize selecting the phase switching with a cover.
5, intelligent high-pressure reactive compensation device according to claim 1, it is characterized in that: described compensating controller is by some voltage transformers, current transformer and position of the switch state-detection sensing element, and the logic control device of forming by single-chip microcomputer or programmable controller PLC, industrial computer IPC, logical circuit, with by detection information, man-machine interface information and storage recall info, send combination action control signal after the comprehensive analysis processing, control each capacitor group no-load grouping and select the phase switching or select phase switching capacity transfer separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920013368U CN201388060Y (en) | 2009-04-30 | 2009-04-30 | Intelligent high-pressure reactive compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920013368U CN201388060Y (en) | 2009-04-30 | 2009-04-30 | Intelligent high-pressure reactive compensation device |
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| Publication Number | Publication Date |
|---|---|
| CN201388060Y true CN201388060Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920013368U Expired - Fee Related CN201388060Y (en) | 2009-04-30 | 2009-04-30 | Intelligent high-pressure reactive compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319791A (en) * | 2014-11-23 | 2015-01-28 | 安徽华祝电气技术有限公司 | Double-bus controlled reactive power compensation control system |
-
2009
- 2009-04-30 CN CN200920013368U patent/CN201388060Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319791A (en) * | 2014-11-23 | 2015-01-28 | 安徽华祝电气技术有限公司 | Double-bus controlled reactive power compensation control system |
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| 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: 20100120 Termination date: 20130430 |