CN201113889Y - Unsaturated symmetric magnetic circuit adjustable reactor - Google Patents
Unsaturated symmetric magnetic circuit adjustable reactor Download PDFInfo
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- CN201113889Y CN201113889Y CNU2007200278830U CN200720027883U CN201113889Y CN 201113889 Y CN201113889 Y CN 201113889Y CN U2007200278830 U CNU2007200278830 U CN U2007200278830U CN 200720027883 U CN200720027883 U CN 200720027883U CN 201113889 Y CN201113889 Y CN 201113889Y
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Abstract
The utility model discloses an adjustable reactor for an unsaturated symmetric magnetic circuit. The utility model resolves the problems existing in prior adjustable reactors of high cost, low efficiency, too much noise and difficult application in the real production and has the advantages of simple structure, convenient use, low cost and easy braking, etc., so that the utility model can be applied to power grids for limiting the over voltage, eliminating the self excitation of a generator, making the dynamic compensation of the reactive power and the dynamic constraint of the power fluctuation and processing harmonic waves, etc. The structure of the utility model is as follows: the utility model comprises a controller consisting of a DC excitation control loop, iron cores which are the same in the cross section, a winding and a micro processor, wherein two adjacent iron cores are connected into a whole by a connecting yoke; the winding and the DC excitation control loop are arranged on the iron cores; the inductance quantity of the reactor can be adjusted by adjusting exciting currents with the controller. In contrast to a magnetic valve type adjustable reactor, divided iron core columns of the utility model are the same in cross section; while in contrast to a magnetic control type adjustable reactor, divided iron core columns of the utility model are provided with segmented and even air gaps; Compared with the magnetic valve type adjustable reactor and the magnetic control type adjustable reactor, the total magnetic circuit adopts the unsaturated symmetric structure.
Description
Technical field
The utility model relates to a kind of unsaturated symmetrical magnetic circuits Regulatable reactor, belongs to the power transmission and transforming equipment field in advanced manufacturing and the automatic technology.
Background technology
The reactive balance of electric power system is to the safety and economic operation of electrical network and to improve the quality of power supply significant.The equipment that in electrical network, has a large amount of load or burden without work frequent variations, particularly power electronic technology and device are in the extensive use of electrical network, the voltage power-less problem is more outstanding, and the development of novel reliable and practical Regulatable reactor and using has become that electric power system presses for research and one of important key technology problem of solving.
Along with the development of power electronic technology and in application on power system, the static reactive technology has obtained developing rapidly.Static reactive is meant with different rest switch switched capacitor or reactor, makes it have the ability that absorbs and send reactive current, is used to improve the power factor of electric power system, and systems stabilisation voltage suppresses functions such as system oscillation.Mainly contain following three major types type, a class is the static passive compensation device (SR:SaturatedReactor) with saturable reactor; Second class is thyristor-controlled reactor (TCR:Thyristor ControlReactor), thyristor switchable capacitor (TSC:ThyristorSwitchCapacitor), and these two kinds of devices are referred to as SVC (StaticVar Compensator); The 3rd class is static passive compensation device---the senior static reacance generator (ASVG:Advanced StaticVarGenerator) that adopts from the commutation Semiconductor Converting Technology.
Saturable reactor is divided into two kinds of autotransducer and controllable transducers, reactive power compensator with autotransducer is to rely on the intrinsic ability of reactor self to come burning voltage, and its utilizes saturation characteristic unshakable in one's determination to control to send or the size of absorbing reactive power.Controllable transducer is controlled degree of saturation unshakable in one's determination by the operating current that changes in the control winding, thereby changes the induction reactance of work winding, further controls the size of reactive current.
The controlled reactor majority of visible report is adjusting gapped-core type, phase control type, high-impedance transformer type and magnetic saturation controllable type at present.The silicon steel sheet of magnetic valve type controllable reactor and magnetism-controlled reactor is in saturation condition for a long time, and the big temperature rise of core loss also has vibration and noise in addition, and these shortcomings have hindered a large amount of uses of controllable transducer.
Summary of the invention
Problems such as the purpose of this utility model is to overcome existing all kinds of inductance value Regulatable reactor cost height, efficient is low, noise is big and be difficult to use in actual production, provide a kind of have simple in structure, easy to use, cost is low, is easy to the unsaturated symmetrical magnetic circuits Regulatable reactor of advantages such as processing and fabricating.
For achieving the above object, the utility model adopts following technical scheme:
A kind of unsaturated symmetrical magnetic circuits Regulatable reactor, it comprises DC excitation control loop, at least one group of prismatic iron core, at least one group of winding and at least one controller that microprocessor is formed that at least one group of power electronic device formed; Become whole by connecting yoke piece between adjacent two iron cores, winding and DC excitation control loop are installed on it, and are regulated the exciting current size, and then regulate the inductance value of reactor by controller.
Described iron core constitutes the two mount structures of six posts by two symmetrical groups three-phase core limb, and becomes whole by the connection yoke piece between adjacent two iron cores, and winding is installed on the iron core.
Described iron core is two posts or three posts or the two frame phase structures of four posts, connects by connecting yoke between adjacent two iron cores, and winding also is installed on the iron core.
Described iron core is made by a kind of permeability magnetic material, core limb unshakable in one's determination is by making with wide, contour permeability magnetic material and the permeability magnetic material stack wide, segmentation of core limb, the permeability magnetic material and the core limb of segmentation are wide, leave air gap between every section permeability magnetic material, air gap is filled with nonmagnetic substance, and the height sum of air gap and every section permeability magnetic material equates with the height of core limb.
Described iron core is made by multiple permeability magnetic material, and core limb unshakable in one's determination is by making with contour two or more permeability magnetic materials stacks of core limb, and the width of various permeability magnetic materials can be that equate or unequal.
Described iron core is made by multiple permeability magnetic material, core limb unshakable in one's determination is by making with wide, contour permeability magnetic material and the permeability magnetic material stack wide, segmentation of core limb, the permeability magnetic material and the core limb of segmentation are wide, leave air gap between every section permeability magnetic material, air gap is filled with another kind of or multiple permeability magnetic material, and the height sum of air gap and every section permeability magnetic material equates with the height of core limb.
The utility model adopts one group of prismatic iron core, one group of winding, one group of control loop and controller that microprocessor is formed that power electronic device is formed.The body part of unshakable in one's determination and winding formation reactor, the controller that control loop of being made up of power electronic device and microprocessor are formed has constituted the control section of reactor.Above-mentioned iron core is six pillars (three-phase) made of permeability magnetic material or two posts, three posts, four posts (single-phase) structure, become whole by connecting yoke piece between adjacent two iron cores, winding and DC excitation control loop are installed on it, by the size that controller is regulated exciting current, just can regulate the inductance value of reactor.Different with magnetic valve type controllable reactor is that the divided-iron core post is prismatic, and different with magnetism-controlled reactor is the even air gap that segmentation is arranged on the divided-iron core post, and it is undersaturated that total magnetic circuit of while is compared with the above two.
The beneficial effects of the utility model are: simple in structure, easy to use, cost is low, is easy to processing and fabricating.
Description of drawings
Fig. 1 is the two closed-in construction figure of six posts of the present utility model;
Fig. 1 a is the end view of Fig. 1;
Fig. 2 is a three-phase magnetic circuit structure chart of the present utility model;
Fig. 3 is a phase magnetic structure figure of the present utility model;
Fig. 4 is a regulative reactance schematic diagram of the present utility model;
Fig. 5 is a hardware control system schematic diagram of the present utility model.
Wherein, 1. iron core 2. connects yoke, 3. winding, 4. controller.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
It shown in Fig. 1, Fig. 1 a structural representation that constitutes the two mount structures (three-phase) unshakable in one's determination 1 of reactor body part and parcel-six pillar.
This iron core 1 is made of two symmetrical groups three-phase core limb, and constitutes integral body by connecting yoke 2, is applicable to three-phase electricity sensibility reciprocal continuous adjustable reactor (as shown in Figure 2).When core limb adopts a kind of permeability magnetic material, core limb is by making with wide, contour permeability magnetic material of core limb and permeability magnetic material stack wide, segmentation, the permeability magnetic material and the core limb of segmentation are wide, leave air gap between every section permeability magnetic material, air gap is filled with nonmagnetic substance, and the height sum of air gap and every section permeability magnetic material equates with the height of core limb; When core limb adopted multiple permeability magnetic material, core limb was by making with contour two or more permeability magnetic materials stack of core limb, and the width of various permeability magnetic materials can equate, also can be unequal; When core limb adopted multiple permeability magnetic material and structure identical with claim 4, air gap can replace with another kind of or multiple permeability magnetic material.
Different with magnetic valve type controllable reactor is that the divided-iron core post is prismatic, the unshakable in one's determination saturated magnet valve section that occurs in of magnetic valve type controllable reactor, and the unsaturated section magnetic circuit with saturated section connected; Different with magnetism-controlled reactor is the even air gap that segmentation is arranged on the divided-iron core post, and the iron core of magnetism-controlled reactor is all saturated at whole magnetic circuit.And the total magnetic circuit of the utility model Regulatable reactor is undersaturated, and it is in parallel wherein controlling magnetic circuit and main magnetic circuit, and this feature has reduced vibration unshakable in one's determination and noise and made processing and fabricating convenient.In addition, the structure of the utility model Regulatable reactor has guaranteed the symmetry of magnetic circuit, the more important thing is that interchange magnetic circuit and dc circuit magnetic loop separate, and this feature can reduce leakage field unshakable in one's determination, improves the efficient of reactor, reduces core loss.
For the Regulatable reactor of two posts, three posts, two frame (single-phase) structures of four posts, the structure of the structure of its core limb and operation principle and three-phase Regulatable reactor identical (as shown in Figure 3)
The adjusting of Regulatable reactor
The winding 3 of Regulatable reactor is made up of main winding and control winding.The control winding can be an auto-coupling, is the part of main winding, and main winding has tapping ratio to be
Tap, be connected to controllable silicon T between them
1, T
2What difference was unshakable in one's determination is connected in parallel to power supply (as shown in Figure 4) after two main winding interconnections up and down.Because controllable silicon is connected between the control tapping, voltage is very little on it, only is about 1% of system's rated voltage, has guaranteed operational reliability.When the controlled reactor main winding is connected to supply voltage, at controllable silicon T
1, T
2Two ends induce the voltage of 1% left and right sides supply voltage.The positive half cycle triggering and conducting of supply voltage controllable silicon T
1, in the loop, produce Control current i '
kAnd i "
kSupply voltage negative half-cycle triggering and conducting controllable silicon T
2, in the loop, produce Control current i '
kAnd i "
k, a power frequency period takes turns conducting T
1And T
2, the DC control current i of generation '
kAnd i "
k, make reactor work iron core saturated, output current increases.Controlled reactor output current size depends on SCR control angle α, and α is more little, and the Control current of generation is strong more, thereby reactor work magnetic saturation unshakable in one's determination is high more, and output current is big more.Therefore, change the SCR control angle, but smooth adjustment reactor capacity.
When the control winding adopts independent winding, with the main winding electrical isolation.Change direct voltage E
kAnd corresponding circuit controls current i
kSize to regulate magnetic saturation degree unshakable in one's determination, reaches the purpose that changes reactor output current i.
The control section of Regulatable reactor
The operation principle of controller 4 is: after the three-phase voltage of electrical network and current signal change into low-voltage signal through instrument transformer, be connected with circuit for signal conditioning, carry out filtering, processing such as amplification, change the signal that DSP can accept into, analog-to-digital conversion and analyzing and processing by dsp controller, power quality datas such as reactive power compensation amount that the system that calculates needs and harmonic wave, dsp controller is according to result of calculation output silicon controlled control signal, change silicon controlled triggering and conducting angle, regulate the current value of excitation winding, with the target (as shown in Figure 5) that reaches smooth adjustment reactor capacity.
Claims (6)
1, a kind of unsaturated symmetrical magnetic circuits Regulatable reactor is characterized in that: it comprises DC excitation control loop, at least one group of prismatic iron core, at least one group of winding and at least one controller that microprocessor is formed that at least one group of power electronic device formed; Become whole by connecting yoke piece between adjacent two iron cores, winding and DC excitation control loop are installed on it, and are regulated the exciting current size, and then regulate the inductance value of reactor by controller.
2, unsaturated symmetrical magnetic circuits Regulatable reactor according to claim 1, it is characterized in that: described iron core constitutes the two frame three-phase structures of six posts by two symmetrical groups three-phase core limb, and whole by the one-tenth of the connection yoke piece between adjacent two iron cores, winding is installed on the iron core.
3, unsaturated symmetrical magnetic circuits Regulatable reactor according to claim 1 is characterized in that: described iron core is two posts or three posts or the two frame phase structures of four posts, connects by connecting yoke between adjacent two iron cores, and winding also is installed on the iron core.
4, according to claim 1 or 2 or 3 described unsaturated symmetrical magnetic circuits Regulatable reactor, it is characterized in that: described iron core is made by a kind of permeability magnetic material, core limb unshakable in one's determination is by making with wide, contour permeability magnetic material and the permeability magnetic material stack wide, segmentation of core limb, the permeability magnetic material and the core limb of segmentation are wide, leave air gap between every section permeability magnetic material, air gap is filled with nonmagnetic substance, and the height sum of air gap and every section permeability magnetic material equates with the height of core limb.
5, according to claim 1 or 2 or 3 described unsaturated symmetrical magnetic circuits Regulatable reactor, it is characterized in that: described iron core is made by multiple permeability magnetic material, core limb unshakable in one's determination is by making with contour two or more permeability magnetic materials stacks of core limb, and the width of various permeability magnetic materials can be that equate or unequal.
6, according to claim 1 or 2 or 3 described unsaturated symmetrical magnetic circuits Regulatable reactor, it is characterized in that: described iron core is made by multiple permeability magnetic material, core limb unshakable in one's determination is by making with wide, contour permeability magnetic material and the permeability magnetic material stack wide, segmentation of core limb, the permeability magnetic material and the core limb of segmentation are wide, leave air gap between every section permeability magnetic material, air gap is filled with another kind of or multiple permeability magnetic material, and the height sum of air gap and every section permeability magnetic material equates with the height of core limb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200278830U CN201113889Y (en) | 2007-09-27 | 2007-09-27 | Unsaturated symmetric magnetic circuit adjustable reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200278830U CN201113889Y (en) | 2007-09-27 | 2007-09-27 | Unsaturated symmetric magnetic circuit adjustable reactor |
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| Publication Number | Publication Date |
|---|---|
| CN201113889Y true CN201113889Y (en) | 2008-09-10 |
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|---|---|---|---|
| CNU2007200278830U Expired - Fee Related CN201113889Y (en) | 2007-09-27 | 2007-09-27 | Unsaturated symmetric magnetic circuit adjustable reactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661832A (en) * | 2009-09-10 | 2010-03-03 | 刘有斌 | Controllable reactor with air gap |
| CN102064759A (en) * | 2011-01-11 | 2011-05-18 | 山东大学 | Self-excited controllable saturation resistor and control method thereof |
| CN105590729A (en) * | 2015-12-28 | 2016-05-18 | 国网山东省电力公司枣庄供电公司 | Transformer with excitation reactance adjustable function |
-
2007
- 2007-09-27 CN CNU2007200278830U patent/CN201113889Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101661832A (en) * | 2009-09-10 | 2010-03-03 | 刘有斌 | Controllable reactor with air gap |
| CN102064759A (en) * | 2011-01-11 | 2011-05-18 | 山东大学 | Self-excited controllable saturation resistor and control method thereof |
| CN102064759B (en) * | 2011-01-11 | 2012-06-27 | 山东大学 | Self-excited controllable saturation resistor and control method thereof |
| CN105590729A (en) * | 2015-12-28 | 2016-05-18 | 国网山东省电力公司枣庄供电公司 | Transformer with excitation reactance adjustable function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI GUYUAN POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SUN ZHIYING Effective date: 20100519 Free format text: FORMER OWNER: WANG XUECAI SUN SHUMIN |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 250001 NO.801, UNIT 3, BUILDING 1, NO.113 YINGXIONGSHAN ROAD, ZHONG DISTRICT, JI'NAN CITY, SHANDONG PROVINCE TO: 201108 NO.191 HUAJIN ROAD, MINXING DISTRICT, SHANGHAI CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100519 Address after: 201108 Shanghai City, Minhang District Hua Jin Road No. 191 Patentee after: Shanghai GoodRun Electric Power Technology Co., Ltd. Address before: 250001, No. 3, building 1, building 113, heroic mountain road, Shizhong District, Shizhong District, Shandong, Ji'nan, 801 Co-patentee before: Wang Xuecai Patentee before: Sun Zhiying Co-patentee before: Sun Shumin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20160927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |