CN203251094U - 110 kV power grid static var compensator - Google Patents
110 kV power grid static var compensator Download PDFInfo
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- CN203251094U CN203251094U CN2013202766571U CN201320276657U CN203251094U CN 203251094 U CN203251094 U CN 203251094U CN 2013202766571 U CN2013202766571 U CN 2013202766571U CN 201320276657 U CN201320276657 U CN 201320276657U CN 203251094 U CN203251094 U CN 203251094U
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- 230000003068 static effect Effects 0.000 title claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims description 54
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 6
- 229920004934 Dacron® Polymers 0.000 claims description 3
- 239000003985 ceramic capacitor Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000004907 flux Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
-
- 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
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Abstract
he utility model relates to a 110kV power grid static var compensator, comprising a controllable electric reactor component and a capacitor in parallel connection with the controllable electric reactor component. The controllable electric reactor component can adjust the saturation of an iron core through conduction angles of a first thyristor and a second thyristor, control the saturation of the iron core by changing the trigger angles of the first thyristor and the second thyristor, in order to change its equivalent inductance; besides, the controllable electric reactor component can quickly and continuously adjust capacity of itself, so as to realize the optimal charging power compensation effect of an ultra-high voltage transmission line, and achieve smooth adjustment of equivalent inductance of the electric reactor; in addition, the controllable electric reactor component can cooperate with the parallel capacitor to realize bidirectional reactive flexible control from capacity to sensibility. The device has the advantages of low production cost, reliable reactive power compensation and small harmonic, and has wide market application prospect.
Description
Technical field
The utility model relates to the power network reactive power compensation technical field, relates in particular a kind of 110kV electrical network Static Var Compensator.
Background technology
Reactive balance is to the economic benefit that improves electrical network and to improve power supply quality most important, and the aggravation of the formation of the large electrical network of superhigh pressure and load variations just need to have a large amount of adjustable reactive power sources to adjust voltage, keeps System Reactive Power trend balance, reduce loss, improve power supply reliability.
Generally adopt at present Static Var Compensator SVC(Static Var Compensator in the dynamic passive compensation of 110kV), perhaps static reacance generator SVG(Static Var Generator), but the former is because thyristor control produces high order harmonic component to meeting in the switching process of reactor, thereby there is the larger shortcoming of harmonic wave in it, need to add specially filter if overcome the larger shortcoming of harmonic wave, this is just so that the floor space of whole Static Var Compensator is larger, and the latter is expensive and reliability is lower.
The utility model content
The purpose of this utility model provides a kind of 110kV electrical network Static Var Compensator, reducing production costs, and improves the reliability of reactive power compensation, reduces the harmonic wave in the reactive power compensation process.
For solving the problems of the technologies described above, the 110kV electrical network Static Var Compensator that the utility model provides comprises controlled reactor assembly and the capacitor in parallel with described controlled reactor assembly, and wherein said controlled reactor assembly specifically comprises:
Iron core, described iron core comprises the first sub-post and the second sub-post of adjacent setting, the wherein said first sub-post comprise successively connect first on cylinder, the first small bore body and the first lower prop, the described second sub-post comprise successively connect second on cylinder, the second small bore body and the second lower prop, cylinder equates with the cross-sectional area of described the first lower prop and greater than the cross-sectional area of described the first small bore body on wherein said first, and cylinder equates with the cross-sectional area of described the second lower prop and greater than the cross-sectional area of described the second small bore body on described second;
The first winding, described the first winding directly is wound to cylinder on described second by described the first lower prop, the part that described the first winding is wrapped in described the first lower prop is provided with the first centre tap, is wrapped in that the part on the cylinder is provided with the second centre tap on second;
The second winding, described the second winding directly is wound to cylinder on described first by described the second lower prop, described the first winding intersects with the middle part of described the second winding, and described the first winding is wound to its end of the part on the cylinder on described second and links to each other with end that described the second winding is wrapped in cylinder on described first and form the first power end, described the first winding is wrapped in its end of part and described the second winding on described the first lower prop and is wrapped in end on described the second lower prop and links to each other and form the second source end, described the second winding is wrapped on the part of described the second lower prop and is provided with the 3rd centre tap, is wrapped on described first trunk portion and sets up separately and be equipped with the 4th centre tap;
The first thyristor, described the first Thyristors in series are between described the 4th centre tap and described the first centre tap, and its anode links to each other with described the 4th centre tap;
The second thyristor, described the second Thyristors in series are between described the second centre tap and described the 3rd centre tap, and its anode links to each other with described the second centre tap;
The afterflow parts, the anode of described afterflow parts links to each other with the part of described the second winding across the described first sub-post and described the second sub-post, and negative electrode links to each other with the part of described the first winding across the described first sub-post and described the second sub-post,
Described Parallel-connected Capacitor is on described the first power end and described second source end.
Preferably, in above-mentioned 110kV electrical network Static Var Compensator, described afterflow parts are fly-wheel diode.
Preferably, the area of section of described the first small bore body be cylinder or described the first lower prop on described first area of section 1/3rd.
Preferably, the area of section of described the second small bore body be cylinder or described the second lower prop on described second area of section 1/3rd.
Preferably, on described first on the area of section and described second of cylinder the area of section of cylinder equate.
Preferably, described the first thyristor and described the second thyristor are the metallic packaging thyristor.
Preferably, described the first thyristor and described the second thyristor are the plastic packaging thyristor.
Preferably, described the first thyristor and described the second thyristor are the ceramic packaging thyristor.
Preferably, described capacitor is any one in electric capacity of the dacron, ceramic disc capacitor, leaded multilayer ceramic capacitor, electrochemical capacitor, the tantalum electric capacity.
The operation principle of the 110kV electrical network Static Var Compensator that provides in the utility model is as follows:
The first winding and the second winding will be divided into four windings and carry out work in the course of the work, to produce direct current magnetism-assisting on the first thyristor and the second thyristor circuit, and oneself in the above-mentioned first sub-post and the second sub-post is closed for consequent direct current magnetism-assisting, mid portion at four windings produces the consistent direct current magnetism-assisting of direction by self coupling transformation and controlled rectification like this, the anode of afterflow parts links to each other with the part of the second winding across the first sub-post and the second sub-post, negative electrode links to each other across the part at the first sub-post and the second sub-post with the first winding, namely across on the crosspoint of the first sub-post of controlled reactor assembly and the second sub-post winding, afterflow task when finishing the first thyristor or the second thyristor and closing, the first small bore body on the first sub-post and the arranging of the second small bore body on the second sub-post can guarantee when magnetic flux is larger, controlled reactor reaches the saturated state of the degree of depth, the saturation that can regulate the controlled reactor iron core by the angle of flow of the first thyristor and the second thyristor, thereby realize the purpose of smooth adjustment reactor equivalent inductance, and Parallel-connected Capacitor is realized the effect of output capacitive reactive power on first power end and second source end of controlled reactor.It is low that this device has cost of manufacture, and control is simple, and reactive power compensation is reliable, the advantage that harmonic wave is little.
This shows, 110kV electrical network Static Var Compensator provided by the utility model can be controlled the saturation of iron core to change its equivalent inductance by the Trigger Angle of the first thyristor and the second thyristor in the change controlled reactor, can regulate rapidly, continuously reactor self capacity, realize the effect of best extra high voltage network charge power compensation, cooperate simultaneously capacitor in parallel can realize that capacitive arrives the two-way idle flexible control of perception, has advantages of that production cost is low, reactive power compensation is reliable and harmonic wave is little.
Description of drawings
The overall structure schematic diagram of the 110kV electrical network Static Var Compensator that Fig. 1 provides for the utility model embodiment;
The schematic diagram of the iron core that the first small bore body that Fig. 2 provides for the utility model embodiment divides when Flux saturation;
The schematic diagram of the iron core that the first small bore body that Fig. 3 provides for the utility model embodiment divides when the magnetic flux unsaturation;
The equivalent model schematic diagram of the first small bore body under the magnetic structure of the first small bore body that Fig. 4 provides for the utility model embodiment and the operating state.
Wherein, 1 is capacitor, and 2 is the second thyristor, 3 is the second lower prop, and 4 is the second source end, and 5 is the first lower prop, 6 is the first thyristor, and 7 is cylinder on first, and 8 is the first power end, 9 are the afterflow parts, and 10 is cylinder on second, and 11 is the second small bore body, 12 is the first small bore body, and F is magnetic potential, and φ is magnetic flux, Rq is air reluctance, and Rt is iron core magnetic resistance.
Embodiment
Core of the present utility model provides a kind of 110kV electrical network Static Var Compensator, and this Static Var Compensator has advantages of that production cost is low, the reliability of reactive power compensation is high and harmonic wave is less.
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 to Fig. 4, the overall structure schematic diagram of the 110kV electrical network Static Var Compensator that Fig. 1 provides for the utility model embodiment, the schematic diagram of iron core when Flux saturation of the first small bore body that Fig. 2 provides for the utility model embodiment (or second small bore body) part, the schematic diagram of iron core when the magnetic flux unsaturation of the first small bore body that Fig. 3 provides for the utility model embodiment (or second small bore body) part, the equivalent model schematic diagram of the first small bore body (or second small bore body) under the magnetic structure of the first small bore body that Fig. 4 provides for the utility model embodiment (or second small bore body) and the operating state.
The 110kV electrical network Static Var Compensator that the embodiment of the utility model institute provides, be mainly used in as carrying out reactive power compensation on the grid, comprise controlled reactor assembly and the capacitor 1 in parallel with the controlled reactor assembly, comprise iron core in the controlled reactor, the first winding, the second winding, the first thyristor 6, the second thyristor 2 and afterflow parts 9, wherein iron core comprises the first sub-post and the second sub-post of adjacent setting, certainly, be separated with certain distance between between the first sub-post and the second sub-post, the first sub-post comprises cylinder 7 on first from top to bottom successively, the first small bore body 12 and the first lower prop 5, the second sub-post once comprises cylinder 10 on second from top to bottom, the second small bore body 11 and the second lower prop 3, and cylinder 7 equates with the cross-sectional area of the first lower prop 5 and greater than the cross-sectional area of the first small bore body 12 on first, and the cross-sectional area of cylinder 10 and the second lower prop 3 equates and greater than the cross-sectional area of the second small bore body 11 on second;
The first winding at first twines at the first lower prop 5, when being wound into the first small bore body 12, directly be inclined cross on second and twine on the cylinder 10, as shown in fig. 1, and the part that the first winding is wrapped in the first lower prop 5 is provided with the first centre tap, and the part that is wrapped in cylinder 10 on second is provided with the second centre tap;
The second winding at first twines at the second lower prop 3, when retreading to be cross on first, arrival the second small bore body 11 twines on the cylinder 7, therefore, the first winding just intersects in the centre position of iron core with the second winding, the first winding is wrapped on second its end of the part on the cylinder 10 and the second winding and is wound on first cylinder 7 upper ends and links to each other and form the first power end 8, the first winding is wrapped in its end of part and the second winding on the first lower prop 5 and is wrapped in end on the second lower prop 3 and links to each other and form second source end 4, and the second winding is provided with the 3rd centre tap in the part of the second lower prop 3, and the second winding is wrapped in that the part on the cylinder 7 is provided with the 4th centre tap on first;
The first thyristor 6 is connected between the 4th centre tap and the first centre tap, and the anode of the first thyristor 6 links to each other with the 4th centre tap;
The second thyristor 2 is connected between the second centre tap and the 3rd centre tap, and the anode of the second thyristor 2 links to each other with the second centre tap;
The anode of afterflow parts 9 links to each other with the part of the second winding across the first sub-post and the second sub-post, and negative electrode links to each other with the part of the first winding across the first sub-post and the second sub-post;
One end of capacitor 1 and the first power end 8 join, and the other end and second source end 4 join.
This device will produce direct current magnetism-assisting on the first thyristor 6 and the second thyristor 2 circuit when using, and oneself in the above-mentioned first sub-post and the second sub-post is closed for consequent direct current magnetism-assisting, mid portion at four windings produces the consistent direct current magnetism-assisting of direction by self coupling transformation and controlled rectification like this, the anode of afterflow parts 9 links to each other with the part of the second winding across the first sub-post and the second sub-post, negative electrode links to each other across the part at the first sub-post and the second sub-post with the first winding, namely across on the crosspoint of the first sub-post of controlled reactor assembly and the second sub-post winding, afterflow task when finishing the first thyristor 6 or the second thyristor 2 and closing, the first small bore body 12 on the first sub-post and the arranging of the second small bore body 11 on the second sub-post can guarantee when magnetic flux is larger, the controlled reactor iron core reaches the saturated state of the degree of depth, as shown in Figure 2, equivalent model under its magnetic structure and the operating state as shown in Figure 4, the saturation that can regulate the controlled reactor iron core by the angle of flow of the first thyristor 6 and the second thyristor 2, thereby realize the purpose of smooth adjustment reactor equivalent inductance, and capacitor 1 is connected in parallel on first power end 8 and second source end 4 of controlled reactor, realize the effect of output capacitive reactive power, final reactive power compensation and the voltage-regulation that realizes 110kV power transmission network the best, reduce line loss, and it is cheap that this device has cost of manufacture, control simple and reliable advantage, have very wide market application foreground.
This shows, the 110kV electrical network Static Var Compensator that provides in above-described embodiment is the automatic adjusting by the reactive power compensation of magnetic control realization, namely this Static Var Compensator is magnet controlled Static Var Compensator, it is to control the saturation of controlled reactor iron core to change its equivalent inductance by the Trigger Angle that changes the first thyristor 6 and the second thyristor 2, thereby the capacity of adjusting reactor that can be quick and continuous self, cooperate capacitor 1 in parallel can realize that capacitive arrives the two-way idle flexible control of perception, the control simple and flexible of this device, reliable working performance, and floor space is little, and harmonic wave is less.
Preferably, the afterflow parts 9 in above-described embodiment are fly-wheel diode, the afterflow task when fly-wheel diode can be finished the first thyristor 6 and 2 shutoff of the second thyristor.
Area of section ratio on the first small bore body 12 and first between cylinder 7 and the first lower prop 5 needs reasonably to select in actual use, in general, the area of section of the first small bore body 12 is less, the first sub-post will be easily saturated so, it is saturated that otherwise the first sub-post just more is difficult for, in like manner, area of section ratio on the second small bore body 11 and second between cylinder 10 and the second lower prop 3 also needs reasonably to select according to actual, preferably the area of section of the first small bore body 12 is set as 1/3rd of cylinder 7 areas of section on first in the present embodiment, simultaneously the cross-sectional area of the second small bore body 12 is set as 1/3rd of cylinder 10 areas of section on second, further, adopt in the present embodiment cross-sectional area identical first on cylinder 10 on the cylinder 7 and second.
The first thyristor 6 in above-described embodiment can be the metallic packaging thyristor, also can adopt the thyristor of plastic packaging thyristor or ceramic packaging, in the process of actual motion, can be according to environment and instructions for use different, adopt the thyristor of different encapsulating materials, simultaneously, the capacitor 1 that provides in above-described embodiment can be according to reality, any one in selection electric capacity of the dacron, ceramic disc capacitor, leaded multilayer ceramic capacitor, electrochemical capacitor, the tantalum electric capacity.
Above 110kV electrical network Static Var Compensator provided by the utility model is described in detail.Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (9)
1. a 110kV electrical network Static Var Compensator is characterized in that, comprises controlled reactor assembly and the capacitor (1) in parallel with described controlled reactor assembly, and wherein said controlled reactor assembly specifically comprises:
Iron core, described iron core comprises the first sub-post and the second sub-post of adjacent setting, the wherein said first sub-post comprise successively connect first on cylinder (7), the first small bore body (12) and the first lower prop (5), the described second sub-post comprise successively connect second on cylinder (10), the second small bore body (11) and the second lower prop (3), cylinder on wherein said first (7) equates with the cross-sectional area of described the first lower prop (5) and greater than the cross-sectional area of described the first small bore body (12), and cylinder (10) equates with the cross-sectional area of described the second lower prop (3) and greater than the cross-sectional area of described the second small bore body (11) on described second;
The first winding, described the first winding directly is wound to cylinder on described second (10) by described the first lower prop (5), the part that described the first winding is wrapped in described the first lower prop (5) is provided with the first centre tap, and the part that is wrapped on the cylinder on second (10) is provided with the second centre tap;
The second winding, described the second winding directly is wound to cylinder on described first (7) by described the second lower prop (3), described the first winding intersects with the middle part of described the second winding, and described the first winding is wound to end that its end of part and described the second winding on the cylinder on described second (10) be wrapped in cylinder on described first (7) and links to each other and form the first power end (8), described the first winding is wrapped in its end of part and described the second winding on described the first lower prop (5) and is wrapped in end on described the second lower prop (3) and links to each other and form second source end (4), described the second winding is wrapped on the part of described the second lower prop (3) and is provided with the 3rd centre tap, is wrapped in cylinder on described first (7) part and is provided with the 4th centre tap;
The first thyristor (6), described the first thyristor (6) are connected between described the 4th centre tap and described the first centre tap, and its anode links to each other with described the 4th centre tap;
The second thyristor (2), described the second thyristor (2) are connected between described the second centre tap and described the 3rd centre tap, and its anode links to each other with described the second centre tap;
Afterflow parts (9), the anode of described afterflow parts (9) links to each other with the part of described the second winding across the described first sub-post and described the second sub-post, and negative electrode links to each other with the part of described the first winding across the described first sub-post and described the second sub-post,
Described capacitor (1) is connected in parallel on described the first power end (8) and the described second source end (4).
2. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, described afterflow parts (9) are fly-wheel diode.
3. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, the area of section of described the first small bore body (12) be cylinder on described first (7) or described the first lower prop (5) area of section 1/3rd.
4. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, the area of section of described the second small bore body (11) be cylinder on described second (10) or described the second lower prop (3) area of section 1/3rd.
5. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, on described first on the area of section and described second of cylinder (7) area of section of cylinder (10) equate.
6. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, described the first thyristor (6) and described the second thyristor (2) are the metallic packaging thyristor.
7. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, described the first thyristor (6) and described the second thyristor (2) are the plastic packaging thyristor.
8. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, described the first thyristor (6) and described the second thyristor (2) are the ceramic packaging thyristor.
9. 110kV electrical network Static Var Compensator according to claim 1 is characterized in that, described capacitor (1) is any one in electric capacity of the dacron, ceramic disc capacitor, leaded multilayer ceramic capacitor, electrochemical capacitor, the tantalum electric capacity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202766571U CN203251094U (en) | 2013-05-20 | 2013-05-20 | 110 kV power grid static var compensator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202766571U CN203251094U (en) | 2013-05-20 | 2013-05-20 | 110 kV power grid static var compensator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562984A (en) * | 2020-11-23 | 2021-03-26 | 国网浙江省电力有限公司杭州供电公司 | Curve magnetic valve structure, curve magnetic valve type controllable reactor and application |
| CN113315149A (en) * | 2021-05-28 | 2021-08-27 | 武汉大学 | Scott transformer and use method thereof |
-
2013
- 2013-05-20 CN CN2013202766571U patent/CN203251094U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562984A (en) * | 2020-11-23 | 2021-03-26 | 国网浙江省电力有限公司杭州供电公司 | Curve magnetic valve structure, curve magnetic valve type controllable reactor and application |
| CN113315149A (en) * | 2021-05-28 | 2021-08-27 | 武汉大学 | Scott transformer and use method thereof |
| CN113315149B (en) * | 2021-05-28 | 2023-03-14 | 武汉大学 | Scott transformer and use method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |