CN204012732U - A kind of dynamic passive capacity transfer tuning filtering compensation arrangement - Google Patents
A kind of dynamic passive capacity transfer tuning filtering compensation arrangement Download PDFInfo
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- CN204012732U CN204012732U CN201420481690.2U CN201420481690U CN204012732U CN 204012732 U CN204012732 U CN 204012732U CN 201420481690 U CN201420481690 U CN 201420481690U CN 204012732 U CN204012732 U CN 204012732U
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model relates to a kind of dynamic passive capacity transfer tuning filtering compensation arrangement, comprise current-voltage sampling unit, fast excitation magnetic valve type reactor unit, passive tuning filtering unit, network load unit, controller and electric power system, described current-voltage sampling unit connects described controller, and described controller connects described fast excitation magnetic valve type reactor unit; Described fast excitation magnetic valve type reactor unit, described passive tuning filtering unit, described network load unit are parallel with one another and connect respectively described electric power system; Described passive tuning filtering unit comprises Passively compensated unit and the filter reactor of mutual series connection.The utility model can be realized the idle quick response to high-voltage fence, has avoided crossing benefit phenomenon, to the pointed absorption of electric power system harmonic wave; Significantly reduce maintenance and repair cost, save man power and material; Have capability of fast response, be suitable for various industrial cousumer's operating conditions, floor space is little, easy for installation.
Description
Technical field
The utility model relates to high pressure passive filtering compensation technique field, relates in particular to a kind of dynamic passive capacity transfer tuning filtering compensation arrangement.
Background technology
The network load of the industries such as iron and steel, petrochemical industry, metallurgy, coal and printing and dyeing can produce a large amount of harmonic waves in the course of the work, electric power system is polluted, affect power supply quality, the harmonic pollution phenomenon in high-voltage electric power system (6KV, 10KV, 35KV) is particularly serious.Passive electric filter can absorb the harmonic current that harmonic source produces nearby, the effective measures that suppress harmonic pollution, because passive filter is Low ESR to the harmonic wave of a certain frequency, form shunting with electric network impedance, so make the harmonic wave of most of this frequency flow into filter.Passive filter has the advantages such as efficiency is high, simple in structure, reliable and easy to maintenance, is the humorous means that involve reactive power compensation of inhibition that extensively adopt at present.
Publication aspect, Chinese patent CN102412582A discloses a kind of high voltage passive electric filtering protection bucking-out system, comprises residual voltage protective circuit, voltage filter circuit, inhibitory control circuit, discharge circuit, surge protection circuit; CN102412582A discloses a kind of high-low voltage hybrid filter compensation device, formed by several groups of low-voltage thyristor switching filters (TSF) and a set of high pressure automatic switching filtering compensation device (vacuum contactor switching), utilize its TSF part to compensate fast the cold rolling unit of reversible, and corresponding elimination fractional harmonic, improve low-voltage bus bar short time voltage simultaneously, and the passive filter that utilizes high-pressure side certain capacity absorbs low-voltage thyristor switching filters and not yet eliminates the harmonic wave producing with other equipment of user, compensating power.
In addition, be mainly high pressure passive filtration unit about the product of high pressure passive filtering compensation in the market, but single tuning filter branch can only be eliminated specific certain subharmonic, simultaneity factor can produce reactive power fluctuation, thereby cause overcompensation phenomenon or refuse to drop into phenomenon, if multiple filter branch are set, can increase extra cost.
Above-mentioned patented technology scheme cannot finely meet particular user requirements, and the said goods can solve the subject matter of electric power system, but only the harmonic wave of a certain frequency is to Low ESR, cannot realize various operating conditions (as full-loading condition, accidental conditions, light duty etc.) in response power supply grid simultaneously, there is hidden danger, can not be promoted the use of widely.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of dynamic passive capacity transfer tuning filtering compensation arrangement, has the function of the adjustable absorption of harmonic wave, reactive requirement and voltage-regulation in quick response high-voltage fence, to overcome defect of the prior art.
In order to achieve the above object, the purpose of this utility model is achieved through the following technical solutions:
A kind of dynamic passive capacity transfer tuning filtering compensation arrangement, wherein, comprise current-voltage sampling unit, fast excitation magnetic valve type reactor unit, passive tuning filtering unit, network load unit, controller and electric power system, described current-voltage sampling unit connects described controller, and described controller connects described fast excitation magnetic valve type reactor unit; Described fast excitation magnetic valve type reactor unit, described passive tuning filtering unit, described network load unit are parallel with one another and connect described electric power system; Described passive tuning filtering unit comprises Passively compensated unit and the filter reactor of mutual series connection.
Above-mentioned dynamic passive capacity transfer tuning filtering compensation arrangement, wherein, described fast excitation magnetic valve type reactor unit adopts quick MCR technology.
Above-mentioned dynamic passive capacity transfer tuning filtering compensation arrangement, wherein, described controller connects described fast excitation magnetic valve type reactor unit by an excitation case, described fast excitation magnetic valve type reactor unit is realized quick-response excitation by described excitation case, makes the response speed of described fast excitation magnetic valve type reactor unit reach 10ms～20ms.
Above-mentioned dynamic passive capacity transfer tuning filtering compensation arrangement, wherein, also comprises resistance capaciting absorpting circuit, and described fast excitation magnetic valve type reactor unit is realized demagnetization fast by described resistance capaciting absorpting circuit.
Above-mentioned dynamic passive capacity transfer tuning filtering compensation arrangement, wherein, described Passively compensated unit adopts the capacitor group of multiple Parallel-connected Capacitor compositions to realize, and wherein at least one group capacitor is connected with described electric power system by fling-cut switch; The on high-tension side current and voltage signals that described controller collects by described current-voltage sampling unit, fast computing system reactive power, harmonic wave and voltage parameter, and send the divide-shut brake of fling-cut switch described in switching instruction control.
Compared with the prior art, the beneficial effects of the utility model are:
-by being used in conjunction with of sampling unit, fast excitation magnetic valve type reactor unit, passive tuning filtering unit, realize the idle quick response to high-voltage fence, avoided crossing benefit phenomenon, to the pointed absorption of electric power system harmonic wave;
-with respect to high voltage active reactive power compensator and phase control type high-voltage dynamic reactive compensation device, production cost is lower, can realize the substantially non-maintaining operation of 20 years nearly, and reliability is high, significantly reduces maintenance and repair cost, for user has saved man power and material;
-solve capacitor frequent switching phenomenon in capacitor group compensating unit, can real-time stabilization line voltage, improve system power factor, reduce line loss, administer harmonic wave and improve grid supply quality;
-capability of fast response, response speed is the highest can reach 10ms;
-be suitable for various industrial cousumer's operating conditions, can effectively suppress voltage fluctuation and system oscillation, improve load three-phase imbalance, strengthen the stability of high-voltage fence;
-floor space is little, easy for installation, and fast excitation magnetic valve type reactor unit adopts oil immersion mode, and complete equipment can adopt outdoor mounted, the natural type of cooling;
-under filter reactor capacity, the immovable prerequisite of quantity, by the adjustable reactive power of regulating capacitor group and tuning point, reduce device cost.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the dynamic passive capacity transfer tuning filtering compensation arrangement of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.
Shown in Fig. 1, the dynamic passive capacity transfer tuning filtering compensation arrangement of the utility model comprises current-voltage sampling unit 1, fast excitation magnetic valve type reactor unit 5, passive tuning filtering unit, network load unit 10, controller 2 and electric power system, current-voltage sampling unit 1 connects controller 2, controller 2 connects fast excitation magnetic valve type reactor unit 5, fast excitation magnetic valve type reactor unit 5, passive tuning filtering unit, network load unit 10 is parallel with one another and connect respectively electric power system, passive tuning filtering unit comprises Passively compensated unit and the filter reactor 9 of mutual series connection.
Fast excitation magnetic valve type reactor unit 5 adopts quick MCR technology, MCR (Magmetically Controlledshunt Reactors) is magnetic valve type reactor, capable of dynamic continuous wave output lagging reactive power, to the position that needs reactive power compensation according to Optimal Control require to carry out accurately, dynamically, compensation performance reliably, can guarantee to occur under any operating condition overcompensation phenomenon.MCR magnetic valve type reactor is quick response excitation system, response time reaches in 20ms, utilize the resonance phenomena of electric capacity and inductance, the energy of storing in electric capacity is transported in iron core fast in the mode of resonance, realize quick-response excitation, and utilize resistance capaciting absorpting circuit, absorb fast unnecessary energy in iron core, realize demagnetization fast, can be applicable to the impacts such as wind power generation, optical energy power, milling train, arc furnace, coal mine lifting machine, change fast working condition system.
MCR magnetic valve type reactor excitation system is furnished with three isolated power taking transformers, realize the quick response idle to high-voltage fence, avoided benefit phenomenon, and make this dynamic passive capacity transfer tuning filtering compensation arrangement can regulate tuning point in the process of reactive power output, concrete adjustment process refers to subsequent implementation briefing.
Controller 2 connects fast excitation magnetic valve type reactor unit 5 by excitation case 3, owing to adopting the new excitation regulation means such as pulsed field magnetization, controllable resonant, make the response speed of the fast excitation magnetic valve type of MCR reactor unit 5 bring up to 10～20ms from original 100ms～1s, export perceptual capacity and can reach 0kvar～rated capacity, thereby met the reactive power compensation demand of nearly all impact load such as milling train, arc furnace.Shown in Fig. 1, excitation case 3 adopts power supply 4 that working power is provided.
In preferred embodiment, Passively compensated unit adopts the capacitor group of multiple Parallel-connected Capacitor compositions to realize, wherein at least one group capacitor is connected with electric power system by fling-cut switch KM, on high-tension side current signal and voltage signal that controller 2 collects by current-voltage sampling unit 1, fast computing system reactive power, harmonic wave and voltage parameter, and send the divide-shut brake of switching instruction control fling-cut switch KM.Capacitor group adopts the power capacitor of high-quality; reliability is high, the life-span is long, loss is little, operation temperature rise is low; and is furnished with capacitor protecting function; capacitor is also furnished with electric discharge device; and be furnished with outer fuse protected; can be according to electric power system situation apolegamy filter reactor, a small amount of harmonic wave that filtering nonlinear-load and MCR system itself produces.Part capacitor in capacitor group is one-time fixed input by this dynamic passive capacity transfer tuning filtering compensation arrangement, by fling-cut switch KM6 (vacuum contactor) on/off switch, make other capacitor groups drop into, excise, thereby change the reactive compensation capacity of capacitor group.
In preferred embodiment of the present utility model, Passively compensated unit adopts capacitance group 7 and capacitance group 8 to form, wherein, the inlet wire of capacitance group 7 is connected with electric power system by fling-cut switch KM, outlet is in parallel with capacitance group 8, filter reactor 9 is inductance L, capacitance group 7, capacitance group 8 and the common composition of filter reactor 9 LC loop.
It should be noted that, what in Fig. 1, only provide is the structural representation that the utility model reactive power compensator comprises a fast excitation magnetic valve type reactor unit 5 (idle generating unit) and a Passively compensated unit, but skilled in the art will recognize that, the quantity of the Passively compensated unit of this reactive power compensator can suitably be adjusted as required, and fast excitation magnetic valve type reactor unit 5 (idle generating unit) capacity can be according to the reactive power fluctuation situation configuration size of system.
Controller 2 is by system power, the voltage at 1 detection of grid load cell 10 (nonlinear-load) place, current-voltage sampling unit, the electric energy situations such as real time computation system electric current, voltage, harmonic wave, control vacuum contactor 6 divide-shut brakes, thereby change the output of capacitive reactive power size, also changed tuning point (idle output size and tuning point can arrange priority target by controller) simultaneously.Magnetic valve type reactor is controlled reactive source, according to system status, carries out active fast reactive adjusting, effectively suppresses voltage fluctuation and system oscillation, improves load three-phase imbalance, strengthens the stability of a system.
MCR technology passes through to change the degree of saturation of DC magnetizing and then change iron core fast, thereby reaches the object of the idle output of smooth adjustment.Common MCR is exciting is miniwatt silicon controlled rectifier, belong to half control device, a sine wave (20ms) can only conducting once, and quick MCR utilizes the resonance phenomena of electric capacity and inductance, the energy of storing in electric capacity is transported in iron core fast in the mode of resonance, realizes quick-response excitation by excitation case 3.Meanwhile, fast excitation magnetic valve type reactor unit 5 is realized demagnetization fast by resistance capaciting absorpting circuit.
The utility model device is realized and is specifically described as follows to the idle quick response of high-voltage fence and the tuning workflow of capacity transfer:
The voltage of supposing the high-voltage fence that nonlinear-load connects is 10kV, idle capacitor group 7 output capacities are 1000kvar, the output capacity of idle capacitor group 8 is also 1000kvar, filter reactor 9 inductance values are 13.3mH, and the output perception capacity of fast excitation magnetic valve type reactor unit 5 is that 0kvar～2000kvar is adjustable continuously.Current/voltage collecting unit 1 gather voltage signal on high-voltage fence and current signal and by the voltage signal collecting and current signal transfer to controller 2, controller 2 calculates the reactive requirement amount, harmonic content, voltage swing etc. of this high-voltage fence according to the voltage signal collecting and current signal, and sends control command.
The first situation, if controller 2 is 1000kvar according to the current reactive requirement amount of this voltage signal and current signal calculating high-voltage fence, there are a large amount of 5 subharmonic currents in system, current idle capacitor group 8 output capacities are 1000kvar, form single tuning branch road 5 times with filter reactor 9,250Hz frequency harmonics is Low ESR, forms with electric network impedance the relation of shunting, and can meet the reactive requirement amount of high-voltage fence and absorb a large amount of more than 5 and 5 times harmonic waves.
The second situation, if controller 2 is 500kvar according to the current reactive requirement amount of this voltage signal and current signal calculating high-voltage fence, there are a large amount of 5 subharmonic currents in system, current idle capacitor group 8 output capacities are 1000kvar, form single tuning branch road 5 times with filter reactor 9, 250Hz frequency harmonics is Low ESR, form with electric network impedance the relation of shunting, existing in overcompensation 500kvar phenomenon, meanwhile controller 2 regulates the fast excitation magnetic valve type reactor unit 5 perceptual capacity 500kvar of output fast, balance overcompensation phenomenon, can meet the reactive requirement amount of high-voltage fence and absorb a large amount of more than 5 and 5 times harmonic waves.
The third situation, if controller 2 is 2000kvar according to the current reactive requirement amount of this voltage signal and current signal calculating high-voltage fence, there are a large amount of 4 subharmonic currents in system, current idle capacitor group 8 output capacities are 1000kvar, drop into again idle capacitor group 7, form single tuning branch road 3.6 times with filter reactor 9, be Low ESR can the more than 4 times harmonic wave of absorption portion for 4 subharmonic, form with electric network impedance the relation of shunting, meanwhile controller 2 regulates the fast excitation magnetic valve type reactor unit 5 perceptual capacity 0kvar of output fast, can meet the reactive requirement amount of high-voltage fence and absorb a large amount of more than 4 times and 4 times harmonic waves.
The 4th kind of situation, if controller 2 is 1500kvar according to the current reactive requirement amount of this voltage signal and current signal calculating high-voltage fence, there are a large amount of 4 subharmonic currents in system, the output capacity of current idle capacitor group 8 is 1000kvar, drop into again idle capacitor group 7, form single tuning branch road 3.6 times with filter reactor 9, be Low ESR can the more than 4 times harmonic wave of absorption portion for 4 subharmonic, form with electric network impedance the relation of shunting, meanwhile controller 2 regulates the fast excitation magnetic valve type reactor unit 5 perceptual capacity 500kvar of output fast, can meet the reactive requirement amount of high-voltage fence and absorb a large amount of more than 4 times and 4 times harmonic waves.
The 5th kind of situation, if controller 2 is 3000kvar according to the current reactive requirement amount of this voltage signal and current signal calculating high-voltage fence, in system, there are a large amount of 5 subharmonic currents, current idle capacitor group 8 output capacities are 1000kvar, drop into again idle capacitor group 7, form single tuning branch road 3.6 times with filter reactor 9, be Low ESR can the more than 4 times harmonic wave of absorption portion for 4 subharmonic, form with electric network impedance the relation of shunting, meanwhile controller 2 regulates the fast excitation magnetic valve type reactor unit 5 perceptual capacity 0kvar of output fast.Now cannot meet the demand 3000kvar of high-voltage fence to idle amount.But at this moment, the maximum capacitive reactive power of output only has 2000kvar, can be by increasing condenser capacity or group number, to meet the reactive requirement amount 3000kvar of high-voltage fence while running into this situation.Controller 2 can arrange that reactive power compensation is preferential or filtering is preferential, so can meet the reactive requirement amount of high-voltage fence and absorb a large amount of more than 4 times and 4 times harmonic waves.
Can find out from above-described embodiment and numerical result, advantage of the present utility model is:
By being used in conjunction with of current-voltage sampling unit, fast excitation magnetic valve type reactor unit, passive tuning filtering unit, realize the idle quick response to high-voltage fence, avoided crossing benefit phenomenon, to the pointed absorption of electric power system harmonic wave; With respect to high voltage active reactive power compensator and phase control type high-voltage dynamic reactive compensation device, production cost is lower, can realize vicennial substantially non-maintaining operation nearly, and reliability is high, significantly reduces maintenance and repair cost, for user has saved man power and material; Solve capacitor frequent switching phenomenon in capacitor group compensating unit, can real-time stabilization line voltage, improve system power factor, reduce line loss, administer harmonic wave and improve grid supply quality; Capability of fast response, response speed is the highest can reach 10ms; Be suitable for various industrial cousumer's operating conditions, can effectively suppress voltage fluctuation and system oscillation, improve load three-phase imbalance, strengthen the stability of high-voltage fence; Floor space is little, easy for installation, and fast excitation magnetic valve type reactor unit adopts oil immersion mode, and complete equipment can adopt outdoor mounted, the natural type of cooling; Under filter reactor capacity, the immovable prerequisite of quantity, by the adjustable reactive power of regulating capacitor group and tuning point, reduce device cost; In addition, with respect to high voltage active reactive power compensator and phase control type high-voltage dynamic reactive compensation device, originally dynamic passive capacity transfer tuning filtering compensation arrangement has the advantages such as simple in structure, reliable, maintenance is few, is convenient to safeguard, for user has saved a large amount of man power and materials.
Above specific embodiment of the utility model be have been described in detail, but the utility model is not restricted to specific embodiment described above, it is just as example.To those skilled in the art, any equivalent modifications and alternative also all among category of the present utility model.Therefore,, not departing from equalization conversion and the amendment done under spirit and scope of the present utility model, all should be encompassed in scope of the present utility model.
Claims (5)
1. a dynamic passive capacity transfer tuning filtering compensation arrangement, it is characterized in that, comprise current-voltage sampling unit (1), fast excitation magnetic valve type reactor unit (5), passive tuning filtering unit, network load unit (10), controller (2) and electric power system, described current-voltage sampling unit (1) connects described controller (2), and described controller (2) connects described fast excitation magnetic valve type reactor unit (5); Described fast excitation magnetic valve type reactor unit (5), described passive tuning filtering unit, described network load unit (10) are parallel with one another and connect described electric power system; Described passive tuning filtering unit comprises Passively compensated unit and the filter reactor (9) of mutual series connection.
2. dynamic passive capacity transfer tuning filtering compensation arrangement according to claim 1, is characterized in that, described fast excitation magnetic valve type reactor unit (5) adopts quick MCR technology.
3. dynamic passive capacity transfer tuning filtering compensation arrangement according to claim 2, it is characterized in that, described controller connects described fast excitation magnetic valve type reactor unit (5) by an excitation case, described fast excitation magnetic valve type reactor unit (5) is realized quick-response excitation by described excitation case (3), makes the response speed of described fast excitation magnetic valve type reactor unit (5) reach 10ms～20ms.
4. dynamic passive capacity transfer tuning filtering compensation arrangement according to claim 3, is characterized in that, also comprises resistance capaciting absorpting circuit, and described fast excitation magnetic valve type reactor unit (5) is realized demagnetization fast by described resistance capaciting absorpting circuit.
5. dynamic passive capacity transfer tuning filtering compensation arrangement according to claim 1, it is characterized in that, described Passively compensated unit adopts the capacitor group of multiple Parallel-connected Capacitor compositions to realize, and wherein at least one group capacitor is connected with described electric power system by fling-cut switch (6); The on high-tension side current and voltage signals that described controller (2) collects by described current-voltage sampling unit (1), fast computing system reactive power, harmonic wave and voltage parameter, and send the divide-shut brake of fling-cut switch (6) described in switching instruction control.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302161A (en) * | 2018-08-31 | 2019-02-01 | 维沃移动通信有限公司 | Tunable filter circuit and terminal device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302161A (en) * | 2018-08-31 | 2019-02-01 | 维沃移动通信有限公司 | Tunable filter circuit and terminal device |
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Effective date of registration: 20221116 Address after: 441000 No. 59, Guanyu Road, Tuanshan Town, Xiangyang High tech Development Zone, Hubei Province Patentee after: Hubei Chasri New Energy Technology Co.,Ltd. Address before: 200331 No. 88 lane, Wuwei Road, Putuo District, Shanghai 9 Patentee before: Shanghai Surpass Sun Electric Co.,Ltd. |
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Address after: 441000 No. 59, Guanyu Road, Tuanshan Town, Xiangyang High tech Development Zone, Hubei Province Patentee after: Borg Warner New Energy (Xiangyang) Co.,Ltd. Address before: 441000 No. 59, Guanyu Road, Tuanshan Town, Xiangyang High tech Development Zone, Hubei Province Patentee before: Hubei Chasri New Energy Technology Co.,Ltd. |