CN201393070Y - Low-voltage reactive-power comprehensive compensation device - Google Patents
Low-voltage reactive-power comprehensive compensation device Download PDFInfo
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- CN201393070Y CN201393070Y CN200920032747U CN200920032747U CN201393070Y CN 201393070 Y CN201393070 Y CN 201393070Y CN 200920032747 U CN200920032747 U CN 200920032747U CN 200920032747 U CN200920032747 U CN 200920032747U CN 201393070 Y CN201393070 Y CN 201393070Y
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- road
- refills
- combination switch
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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 low-voltage reactive-power comprehensive compensation device, which comprises a primary main circuit and a secondary control loop, wherein the primary main circuit comprises a co-compensation loop; for the co-compensation loop, a three-phase capacitor is connected into the delta shape and then is connected into an outgoing line end of a combination switch FK1; and an ingoing line end of the combination switch FK1 is connected with a three-phase power supply; the primary main circuit also comprises an individual compensation loop; for the individual compensation loop, a three-phase capacitor is connected into the 'Y' shape and then is connected into an outgoing line end of a combination switch FK2; and an ingoing line end of the combination switch FK2 is connected with a three-phase power supply. The device can solve the problem of over compensation or under compensation caused by co-compensation in the prior art, and the device has the advantages that the individual compensation is carried out after the co-compensation by combining the co-compensation and the individual compensation; the energy consumption is lowered; and the requirement is met.
Description
Technical field
The utility model relates to a kind of low-voltage reactive power comprehensive compensating device.
Background technology
Because the influence of aspect factors such as the power factor of power consumption equipment own, use causes power factor of electric network to reduce, and must carry out reactive power compensation, improves the power supply quality of electrical network.The existing reactive power compensation overwhelming majority adopts the mode of mending altogether, as long as this compensation way collects a needs compensation, three all will compensate, and the phenomenon of benefit will occur, and voltage is higher, does not reach the requirement that improves power factor of electric network, and power consumption; As long as or collect one and do not need compensation, the phenomenon of owing to mend will appear in three equal uncompensations, power factor is on the low side, voltage is on the low side, does not so also reach the requirement of raising power factor of electric network.
Summary of the invention
For overcoming the problem that exists in the background technology, the purpose of this utility model provides a kind of the benefit altogether and the low-voltage reactive power comprehensive compensating device that divides benefit to combine.
Technical solution of the present utility model:
The low-voltage reactive power comprehensive compensating device, comprise main circuit and secondary control loop, a described main circuit comprises and refills the road altogether that the described road that refills altogether is that three phase capacitance is connected into the leading-out terminal that " △ " shape is inserted combination switch FK1, the inlet wire termination three phase mains of combination switch FK1; Its special character is: a described main circuit comprises that also branch refills the road, and it is that three phase capacitance is connected into the leading-out terminal that " Y " shape is inserted combination switch FK2, the inlet wire termination three phase mains of combination switch FK2 that described branch is mended circuit.Wherein secondary control loop comprises capacitance compensation controller xyJKFF, combination switch FK and three sample rate current instrument transformer 1LHa, 1LHb, 1LHc, and the signal output part of described capacitance compensation controller xyJKFF connects the Control Node of combination switch FK; The signal input part of described capacitance compensation controller xyJKFF meets three sample rate current instrument transformer 1LHa, 1LHb, 1LHc.Refill altogether road and the branch of an above-mentioned major loop refill and are serially connected with fuse RD1, fuse RD2 in the road respectively, described fuse RD1 upper port connects three phase mains, the lower port of fuse RD1 connects combination switch FK1 end of incoming cables, described fuse RD2 upper port connects three phase mains, and the lower port of fuse RD2 connects combination switch FK2 end of incoming cables.
Above-mentioned road and the branch of refilling altogether refills the road and is a plurality of, can arbitrarily arrange in pairs or groups,
For example: refilling the road altogether is 6 roads, and it is 2 roads that branch refills the road; Refilling the road altogether is 6 roads, and it is 1 road that branch refills the road; Refilling the road altogether is 3 roads, and it is 3 roads that branch refills the road.
The advantage that the utility model compared with prior art has again:
1, the utility model is by measuring system voltage and load current, control with industrial Pc machine or single-chip microcomputer, the reactive power that calculates load is as controlled quentity controlled variable, obtain the data that thyristor switch is closed or disconnect, and control corresponding thyristor switch, adopt and mend altogether and the compensation way that divides benefit to combine, the capacitor group that the input capacity is fit to, carry out branch as required after mending altogether earlier and mend, cut down the consumption of energy, meet the demands, avoided some mutually under-compensated while, some phase overcompensation is applicable to industries such as civilian, building, industrial and mineral, and usage range is wider.
2, the utility model adopts combination switch, and compensation precision height, automatic intelligent are followed the tracks of and detected, control, have the energy saving optimizing management function, isobaric zero current input, current over-zero cuts off, no switching overvoltage, shove little, energy consumption is low; Has the electric voltage exception protection, functions such as open-phase protection.
When 3, capacitor of the present invention drops into, non-impact current, make compensation effect fast, accurately, safety.Apparatus of the present invention cost is low, reliability is high, need maintenance workload little relatively.
Description of drawings
Fig. 1 is main circuit schematic diagram of the utility model;
Fig. 2 is a system diagram of the present utility model.
Embodiment
As shown in Figure 1, be circuit diagram of the present utility model, the low-voltage reactive power comprehensive compensating device, comprise main circuit and secondary control loop, a described main circuit comprises and refills the road altogether, the described road that refills altogether is that three phase capacitance is connected into the leading-out terminal that " △ " shape is inserted combination switch FK1, the inlet wire termination three phase mains of combination switch FK1; A described main circuit comprises that also branch refills the road, and it is that three phase capacitance is connected into the leading-out terminal that " Y " shape is inserted combination switch FK2, the inlet wire termination three phase mains of combination switch FK2 that described branch is mended circuit.Refill altogether road and the branch of a described major loop refill and are serially connected with fuse RD1, fuse RD2 in the road respectively, described fuse RD1 upper port connects three phase mains, the lower port of fuse RD1 connects combination switch FK1 end of incoming cables, described fuse RD2 upper port connects three phase mains, and the lower port of fuse RD2 connects combination switch FK2 end of incoming cables.Described secondary control loop comprises capacitance compensation controller xyJKFF, combination switch FK and three sample rate current instrument transformer 1LHa, 1LHb, 1LHc, and the signal output part of described capacitance compensation controller connects the Control Node of combination switch FK; The signal input part of described capacitance compensation controller xyJKFF meets three sample rate current instrument transformer 1LHa, 1LHb, 1LHc.
Described refill altogether road and branch refill the road be a plurality of, but the arbitrary combination collocation;
For example refilling the road altogether is 6 roads, and it is 2 roads that branch refills the road; Refilling the road altogether is 6 roads, and it is 1 road that described branch refills the road; Refilling the road altogether is 3 roads, and it is 3 roads etc. that branch refills the road.
The course of work of the present utility model:
Three-phase voltage signal on the capacitance compensation controller sampling instrument transformer on three-phase current and the main line.The capacitance compensation controller is according to every mutually idle variation, with the reactive power is the control physical quantity, signal is passed to combination switch, combination switch is made corresponding action according to the signal that receives, mend or do not mend, if mend, combination switch closure then, the power factor of setting with the user is that the switching parameter is limited the quantity of, according to the size of each phase reactive power in the power distribution equipment three-phase, the Intelligence Selection capacitor bank is compensating power capacity in time automatically, according to the principle of " sampling polishing ", drop into electrical network, realize the intelligent operation/cutting of capacitor; If combination switch is received the signal that the capacitance compensation controller is not mended, then combination switch execution information indication is directly cut off.
The utility model adopts three-phase to mend altogether with single-phase branch and mends the compensation way that combines, with the idle strategy that is controlled to be of intelligence, gather three-phase voltage, current signal, idle variation in the tracking means, with the reactive power is the control physical quantity, the power factor of setting with the user is that the switching parameter is limited the quantity of, size according to each phase reactive power in the power distribution equipment three-phase, the Intelligence Selection capacitor bank is compensating power capacity in time automatically, principle according to " sampling polishing ", drop into electrical network, realize the intelligent operation/cutting of capacitor.
Claims (7)
1, low-voltage reactive power comprehensive compensating device, comprise main circuit and secondary control loop, a described main circuit comprises and refills the road altogether that the described road that refills altogether is that three phase capacitance is connected into the leading-out terminal that " △ " shape is inserted combination switch FK1, the inlet wire termination three phase mains of combination switch FK1; It is characterized in that: a described main circuit comprises that also branch refills the road, and it is that three phase capacitance is connected into the leading-out terminal that " Y " shape is inserted combination switch FK2, the inlet wire termination three phase mains of combination switch FK2 that described branch is mended circuit.
2, low-voltage reactive power comprehensive compensating device according to claim 1, it is characterized in that: described secondary control loop comprises capacitance compensation controller xyJKFF, combination switch FK and three sample rate current instrument transformer 1LHa, 1LHb, 1LHc, and the signal output part of described capacitance compensation controller xyJKFF connects the Control Node of combination switch FK; The signal input part of described capacitance compensation controller xyJKFF meets three sample rate current instrument transformer 1LHa, 1LHb, 1LHc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920032747U CN201393070Y (en) | 2009-04-23 | 2009-04-23 | Low-voltage reactive-power comprehensive compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920032747U CN201393070Y (en) | 2009-04-23 | 2009-04-23 | Low-voltage reactive-power comprehensive compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201393070Y true CN201393070Y (en) | 2010-01-27 |
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ID=41599891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920032747U Expired - Lifetime CN201393070Y (en) | 2009-04-23 | 2009-04-23 | Low-voltage reactive-power comprehensive compensation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201393070Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946108A (en) * | 2012-11-21 | 2013-02-27 | 保定供电公司 | Voltage automatic compensation device |
| CN103138272A (en) * | 2011-12-02 | 2013-06-05 | 上海连成（集团）有限公司 | Total-sub compensation mixed compensation cabinet |
| CN105305457A (en) * | 2015-09-15 | 2016-02-03 | 安徽佑赛科技有限公司 | Low voltage reactive compensation device and low voltage reactive compensation system |
| CN109713682A (en) * | 2019-01-23 | 2019-05-03 | 安徽南瑞继远电网技术有限公司 | A kind of mixed compensation method and device based on 124888 codings |
-
2009
- 2009-04-23 CN CN200920032747U patent/CN201393070Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138272A (en) * | 2011-12-02 | 2013-06-05 | 上海连成（集团）有限公司 | Total-sub compensation mixed compensation cabinet |
| CN102946108A (en) * | 2012-11-21 | 2013-02-27 | 保定供电公司 | Voltage automatic compensation device |
| CN105305457A (en) * | 2015-09-15 | 2016-02-03 | 安徽佑赛科技有限公司 | Low voltage reactive compensation device and low voltage reactive compensation system |
| CN109713682A (en) * | 2019-01-23 | 2019-05-03 | 安徽南瑞继远电网技术有限公司 | A kind of mixed compensation method and device based on 124888 codings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low-voltage reactive-power comprehensive compensation device Effective date of registration: 20120608 Granted publication date: 20100127 Pledgee: Xi'an innovation technology investment Company limited by guarantee Pledgor: Xi'an Qinli Complete Set Electrical Appliances Co., Ltd. Registration number: 2012990000280 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |