CN107039986B - Reactive power continuous rapid compensation device - Google Patents
Reactive power continuous rapid compensation device Download PDFInfo
- Publication number
- CN107039986B CN107039986B CN201710154497.6A CN201710154497A CN107039986B CN 107039986 B CN107039986 B CN 107039986B CN 201710154497 A CN201710154497 A CN 201710154497A CN 107039986 B CN107039986 B CN 107039986B
- Authority
- CN
- China
- Prior art keywords
- coil
- tap
- thyristor
- terminal
- reactive power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 108700041286 delta Proteins 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical group [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 5
- 230000004907 flux Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention relates to a reactive power continuous and rapid compensation device. The method comprises the following steps that a capacitor C is connected with a controllable reactor L in parallel; the controllable reactor L comprises: coils L1 and L3 are arranged on one iron core column; the other iron core column is provided with coils L2 and L4; coils L1 and L4 are respectively provided with two taps of delta 1 and delta 2, the homonymous ends of coils L1 and L2 are connected with one terminal, the heteronymous end of L1 is connected with the homonymous end of L4, the heteronymous end of L2 is connected with the homonymous end of L3, and the heteronymous ends of coils L3 and L4 are connected with the other terminal; the delta 1 tap and the delta 2 tap of the L1 are respectively connected with the homonymous terminal of the L3 through thyristors D1 and D3, and the delta 2 tap is connected with the homonymous terminal of the L3 through a thyristor D5; the delta 1 tap and the delta 2 tap of the L4 are respectively connected with the synonym terminal of the L2 through thyristors D2 and D4, and the delta 2 tap is connected with the synonym terminal of the L3 through a thyristor D6; a diode D7 is also connected between the synonym terminals of the coils L1, L2.
Description
Technical Field
The invention relates to the technical field of power transmission and transformation of a power system, in particular to a reactive power continuous and rapid compensation device.
Background
The reactive power compensation device plays a role in improving the power factor of a power grid in an electric power supply system, reduces the loss of a power supply transformer and a transmission line, improves the power supply efficiency and improves the power supply environment. The reactive power compensation device is in an indispensable and very important place in the power supply system. The compensation device is reasonably selected, so that the loss of the power grid can be reduced to the maximum extent, and the quality of the power grid is improved. Conversely, improper selection or use may cause many factors such as power supply system, voltage fluctuation, harmonic increase, and the like.
The capacitor group switching can quickly compensate the reactive power. However, the compensation of reactive power by capacitor group switching is stepwise and cannot be continuously adjusted. Furthermore, switches switched in groups of capacitors generally do not operate frequently. The capacitor is connected with the magnetically controlled reactor in parallel, and reactive power continuous compensation can be realized. However, the conventional magnetically controlled reactor has too slow regulation speed. The reactive power can be continuously and rapidly adjusted by increasing the adjusting speed of the magnetically controlled reactor.
Disclosure of Invention
The invention aims to solve the problems and provide a reactive power continuous and rapid compensation device.
In order to achieve the purpose, the invention adopts the following modes:
it includes: the capacitor C is connected with the controllable reactor L in parallel; the controllable reactor L adopts a rapid magnetic control reactor; the quick magnetically controlled reactor comprises: a coil L1 and a coil L3 are arranged on one iron core column; the other iron core column is provided with a coil L2 and a coil L4; the coil L1 has two taps with turn ratios of δ 1 and δ 2, respectively, and the coil L4 also has two taps with turn ratios of δ 1 and δ 2, respectively; the dotted terminals of the coils L1 and L2 are connected to one terminal, the dotted terminal of the coil L1 is connected to the dotted terminal of the coil L4, the dotted terminal of the coil L2 is connected to the dotted terminal of the coil L3, and the dotted terminals of the coils L3 and L4 are connected to the other terminal; a tap with a tap ratio delta 1 of the coil L1 is connected with the same-name end of the coil L3 through a forward thyristor D1, a tap with a tap ratio delta 2 of the coil L1 is connected with the same-name end of the coil L3 through a forward thyristor D3, and a tap with a tap ratio delta 2 of the coil L1 is connected with the same-name end of the coil L3 through a reverse thyristor D5; a tap with a tap ratio delta 1 of the coil L4 is connected with an synonym terminal of the coil L2 through a forward thyristor D2, a tap with a tap ratio delta 2 of the coil L4 is connected with a synonym terminal of the coil L2 through a forward thyristor D4, and a tap with a tap ratio delta 2 of the coil L4 is connected with a synonym terminal of the coil L2 through a reverse thyristor D6; a diode D7 is also connected between the synonym terminals of the coil L1 and the coil L2; the control terminals of all thyristors are controlled by a control circuit.
The coil L1 and the coil L2 have the same number of turns; the number of turns of the coil L3 and the coil L4 are equal.
The turn ratio of the coil L1 taps is defined as the ratio of the number of turns of the taps to the coil ends to the number of turns of the entire coil being δ, δ 2 > δ 1.
The turn ratio of the coil L4 tap is defined as the ratio of the number of turns of the tap to the coil start end to the number of turns of the whole coil is delta, and delta 2 is larger than delta 1.
The invention has the beneficial effects that: the reactive power can be continuously and rapidly adjusted. Reactive power can not only be increased rapidly, but also be decreased rapidly. The magnetically controlled reactor for realizing quick adjustment has a simpler structure. The control method is simple.
Drawings
Fig. 1 shows a schematic diagram of a reactive power continuous rapid compensation device.
Fig. 2 shows a structure of the fast magnetically controlled reactor.
Detailed Description
The invention is further described with reference to the following figures and examples.
Example (b):
the invention is further described with reference to the following figures and examples.
A reactive power continuous rapid compensation device is shown in fig. 1. Comprising a capacitor C connected in parallel with a controllable reactor L. If the reactance value of the controllable reactor L is equal to infinity, the reactive power consumed by the controllable reactor L is equal to zero, and the capacitor C performs reactive power compensation with the maximum capacity on the power system. If the reactance value of the controllable reactor L is gradually reduced, the reactive power consumed by the controllable reactor L is gradually increased, and the reactive power compensation of the capacitor C to the power system is reduced from the maximum value. If the reactance value of the controllable reactor L is reduced, the reactive power consumed by the controllable reactor L is equal to the reactive power sent by the capacitor C, and the reactive power compensation of the reactive power continuous and quick compensation device to the power system is equal to zero. If the reactance value of the controllable reactor L is continuously reduced, the reactive power consumed by the controllable reactor L is larger than the reactive power emitted by the capacitor C, and the reactive power compensation of the reactive power continuous and quick compensation device on the power system is equal to a negative value. Therefore, the reactance value of the controllable reactor L can be continuously adjusted, and the compensation quantity of the reactive power continuous and rapid compensation device can be continuously adjusted. If the reactance value of the controllable reactor L is quickly adjusted, the compensation quantity of the reactive power continuous quick compensation device can be quickly adjusted.
The magnetically controlled reactor is a continuous controllable reactor. A structure of a fast magnetically controlled reactor is shown in fig. 2. It includes: a coil L1 and a coil L3 are arranged on one iron core column; the other iron core column is provided with a coil L2 and a coil L4; the turns of the coil L1 and the coil L2 are equal; the turns of the coil L3 and the coil L4 are equal; the coil L1 has taps, and if the ratio of the number of turns of the tap to the coil end to the number of turns of the entire coil is δ, the ratio of the number of turns of the two taps of the coil L1 is δ 1, δ 2, respectively, and δ 2 > δ 1. The coil L4 has taps, and if the ratio of the number of turns of the tap to the coil start end to the number of turns of the entire coil is δ, the ratio of the number of turns of the two taps of the coil L4 is δ 1, δ 2, respectively, and δ 2 > δ 1.
The dotted terminals I of the coil L1 and the coil L2, the dotted terminal of the coil L1, the dotted terminal of the coil L4, the dotted terminal of the coil L2, the dotted terminal of the coil L3, and the dotted terminal II of the coil L3 and the coil L4; a tap of the coil L1 with a tap ratio delta 1 is connected with the same-name end of the coil L3 through the forward thyristor D1, a tap of the coil L1 with a tap ratio delta 2 is connected with the same-name end of the coil L3 through the forward thyristor D3, and a tap of the coil L1 with a tap ratio delta 2 is connected with the same-name end of the coil L3 through the backward thyristor D5. A tap of the coil L4 with a tap ratio delta 1 is connected with the synonym terminal of the coil L2 through the forward thyristor D2, a tap of the coil L4 with a tap ratio delta 2 is connected with the synonym terminal of the coil L2 through the forward thyristor D4, and a tap of the coil L4 with a tap ratio delta 2 is connected with the synonym terminal of the coil L2 through the reverse thyristor D6. A diode D7 is also connected between the synonym terminals of the coil L1 and the coil L2. The control terminals of all thyristors are controlled by a control circuit.
The fast magnetically controlled reactor is connected to a power system with rated voltage of U1, and when the control circuit controls the cut-off of the thyristor D3, the thyristor D4, the thyristor D5 and the thyristor D6, the rest part is the conventional magnetically controlled reactor. The working principle of the conventional magnetically controlled reactor is briefly described as follows.
When the thyristor D1 and the thyristor D2 are completely cut off, the voltages at two ends of the thyristor D1 and the thyristor D2 are equal to U1 delta 1/2. The thyristor D1 and the thyristor D2 rectifier circuit are not operated, and a small exciting current flows through the coil L1, the coil L2, the coil L3 and the coil L4. The magnetically controlled reactor has a maximum reactance value Zmax.
When the control circuit controls the thyristor D1 and the thyristor D2 to be fully conducted, the thyristor D1 and the thyristor D2 become diode characteristics, and the thyristor D1 and the thyristor D2 respectively form a half-wave rectifying circuit. The dc currents of the coil L1, the coil L2, the coil L3, and the coil L4 reached the maximum design value. The direct current in coil L1 and coil L3 was directed downward, and the direct current in coil L2 and coil L4 was directed upward. The direct current magnetic flux in one core limb faces upwards, and the direct current magnetic flux in the other core limb faces downwards. The core limb is saturated. The magnetically controlled reactor has a minimum reactance value Zmin.
The control circuit controls the rectification flow of the thyristor D1 and the thyristor D2, and can control the direct current in the coil L1, the coil L2, the coil L3 and the coil L4, so that the reactance value of the magnetically controlled reactor can be controlled. The control circuit continuously controls the rectification flow of the thyristor D1 and the thyristor D2, the direct current in the coil L1, the coil L2, the coil L3 and the coil L4 can be continuously controlled, the reactance value of the magnetically controlled reactor is continuously adjusted, and the reactance value of the magnetically controlled reactor is adjusted and changed between the maximum value and the minimum value.
Diode D7 is a freewheeling diode whose role is public knowledge and is no longer burdensome.
The rectifying direction of thyristor D3 is the same as the rectifying direction of thyristor D1. The voltage across thyristor D3 is greater than the voltage across thyristor D1 (because δ 2 > δ 1). The rectifying direction of thyristor D4 is the same as the rectifying direction of thyristor D2. The voltage across thyristor D4 is greater than the voltage across thyristor D2 (because δ 2 > δ 1). If the thyristor D3 participates in the rectification of the thyristor D1, and the thyristor D4 participates in the rectification of the thyristor D2, the speed of adjusting the reactance value of the magnetically controlled reactor from the maximum value to the minimum value can be accelerated.
The rectifying direction of thyristor D5 is opposite to that of thyristor D1. The rectifying direction of thyristor D6 is opposite to that of thyristor D2. If the thyristor D1 is turned off and the thyristor D5 is turned on, the direct current generated by the thyristor D5 in the coil L1 and the coil L3 is opposite to the original direct current method, and the reduction of the original magnetic flux in the iron core is accelerated. If the thyristor D2 is turned off and the thyristor D6 is turned on, the direct current generated by the thyristor D6 in the coil L2 and the coil L4 is opposite to the original direct current method, and the reduction of the original magnetic flux in the iron core is accelerated. Therefore, the thyristors D1 and D2 are closed, the thyristors D5 and D6 are turned on, and the speed of adjusting the reactance value of the magnetically controlled reactor from the minimum value to the maximum value can be accelerated.
The magnetically controlled reactor for realizing quick adjustment has a simpler structure. The control method is simple. The speed of regulating the reactance value of the magnetic control reactor from the maximum value to the minimum value can be increased. The speed of regulating the reactance value of the magnetic control reactor from the minimum value to the maximum value can be increased. The reactive power continuous and rapid compensation device realizes the continuous and rapid adjustment of the reactive power. Reactive power can not only be increased rapidly, but also be decreased rapidly.
The reactive power continuous rapid compensation device can be completely realized and has wide application prospect.
Claims (4)
1. A reactive power continuous rapid compensation device is characterized by comprising: the capacitor C is connected with the controllable reactor L in parallel; the controllable reactor L adopts a rapid magnetic control reactor; the quick magnetically controlled reactor is connected to a power system with rated voltage of U1, and comprises: a coil L1 and a coil L3 are arranged on one iron core column; the other iron core column is provided with a coil L2 and a coil L4; the coil L1 has two taps with turn ratios of δ 1 and δ 2, respectively, and the coil L4 also has two taps with turn ratios of δ 1 and δ 2, respectively; the dotted terminals of the coils L1 and L2 are connected to one terminal, the dotted terminal of the coil L1 is connected to the dotted terminal of the coil L4, the dotted terminal of the coil L2 is connected to the dotted terminal of the coil L3, and the dotted terminals of the coils L3 and L4 are connected to the other terminal; a tap with a tap ratio delta 1 of the coil L1 is connected with the same-name end of the coil L3 through a forward thyristor D1, a tap with a tap ratio delta 2 of the coil L1 is connected with the same-name end of the coil L3 through a forward thyristor D3, and a tap with a tap ratio delta 2 of the coil L1 is connected with the same-name end of the coil L3 through a reverse thyristor D5; a tap with a tap ratio delta 1 of the coil L4 is connected with an synonym terminal of the coil L2 through a forward thyristor D2, a tap with a tap ratio delta 2 of the coil L4 is connected with a synonym terminal of the coil L2 through a forward thyristor D4, and a tap with a tap ratio delta 2 of the coil L4 is connected with a synonym terminal of the coil L2 through a reverse thyristor D6; a diode D7 is also connected between the synonym terminals of the coil L1 and the coil L2; the control terminals of all the thyristors are controlled by the control circuit, the rectifying direction of the thyristor D3 is the same as that of the summing thyristor D1, the rectifying direction of the thyristor D4 is the same as that of the summing thyristor D2, the rectifying direction of the thyristor D5 is opposite to that of the summing thyristor D1, and the rectifying direction of the thyristor D6 is opposite to that of the summing thyristor D2.
2. The reactive power continuous fast compensator according to claim 1, wherein the number of turns of coil L1 and coil L2 is equal; the number of turns of the coil L3 and the coil L4 are equal.
3. The reactive power continuous fast compensation apparatus of claim 1, wherein the turn ratio of the tap of the coil L1 is defined as the ratio of the number of turns of the tap to the coil end to the number of turns of the whole coil is δ, δ 2 > δ 1.
4. The reactive power continuous fast compensation apparatus of claim 1, wherein the turn ratio of the tap of the coil L4 is defined as the ratio of the number of turns of the tap to the start of the coil to the number of turns of the whole coil is δ, δ 2 > δ 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154497.6A CN107039986B (en) | 2017-03-13 | 2017-03-13 | Reactive power continuous rapid compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154497.6A CN107039986B (en) | 2017-03-13 | 2017-03-13 | Reactive power continuous rapid compensation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107039986A CN107039986A (en) | 2017-08-11 |
| CN107039986B true CN107039986B (en) | 2020-03-17 |
Family
ID=59534524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710154497.6A Active CN107039986B (en) | 2017-03-13 | 2017-03-13 | Reactive power continuous rapid compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107039986B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635464A (en) * | 2009-09-01 | 2010-01-27 | 曲娜 | Magnetic control transient reactive power compensation method |
| CN102904263A (en) * | 2012-09-29 | 2013-01-30 | 华北电力大学 | Quick magnetizing and demagnetizing device based on magnetically controlled reactor (MCR) |
| CN204290801U (en) * | 2014-12-02 | 2015-04-22 | 国家电网公司 | The quick response magnet controlled reactor of compound rectifier excitation |
| CN104953850A (en) * | 2015-07-24 | 2015-09-30 | 山东大学 | Multifunctional transformer with high response speed |
| CN106026813A (en) * | 2016-07-28 | 2016-10-12 | 李晓明 | Fast response saturation reactor |
-
2017
- 2017-03-13 CN CN201710154497.6A patent/CN107039986B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635464A (en) * | 2009-09-01 | 2010-01-27 | 曲娜 | Magnetic control transient reactive power compensation method |
| CN102904263A (en) * | 2012-09-29 | 2013-01-30 | 华北电力大学 | Quick magnetizing and demagnetizing device based on magnetically controlled reactor (MCR) |
| CN204290801U (en) * | 2014-12-02 | 2015-04-22 | 国家电网公司 | The quick response magnet controlled reactor of compound rectifier excitation |
| CN104953850A (en) * | 2015-07-24 | 2015-09-30 | 山东大学 | Multifunctional transformer with high response speed |
| CN106026813A (en) * | 2016-07-28 | 2016-10-12 | 李晓明 | Fast response saturation reactor |
Non-Patent Citations (1)
| Title |
|---|
| 磁阀式可控电抗器的研究及计算机辅助设计;刘刚;《CNKI中国优秀硕士学位论文全文库》;20130215;第7-26页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107039986A (en) | 2017-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0575589A1 (en) | Controlled power supply | |
| CN201364801Y (en) | Flux cancellation reactor | |
| CN112992510B (en) | Self-excitation type three-phase three-column type electric-regulation magnetic-control reactor | |
| CN205178888U (en) | Ferroresonance formula three -phase AC voltage regulator device | |
| CN107039986B (en) | Reactive power continuous rapid compensation device | |
| WO2017016249A1 (en) | Multifunctional transformer with rapid response speed | |
| WO2016110013A1 (en) | Magnetically-controlled isolated multifunctional transformer | |
| WO2016141614A1 (en) | Saturable reactor having simple structure | |
| CN216118438U (en) | Compensation type contactless mains voltage stabilizer | |
| CN102682955A (en) | Adjustable inductance | |
| CN104795202A (en) | Saturable reactor shortening transient response time | |
| GB2591808A (en) | DC-DC Conversion | |
| CN214474688U (en) | Voltage regulating circuit based on controllable switch | |
| CN204992589U (en) | Three -phase AC intelligent control circuit | |
| CN201945903U (en) | Phase control type alternating-current voltage stabilizing device | |
| RU2788078C1 (en) | Phase converter with adjustable power | |
| WO2017020709A1 (en) | Improved multifunctional transformer | |
| CN113777989A (en) | Compensation type contactless mains voltage stabilizer | |
| CN219716634U (en) | Separately excited and self-excited magnetically controlled reactor | |
| RU2680374C1 (en) | Shunt reactor-compensator (options) | |
| JP5923341B2 (en) | Voltage regulator | |
| CN102185553B (en) | Continuously controllable transformer | |
| CN115841916B (en) | On-load voltage regulating transformer based on magnetic amplifier principle and voltage regulating method | |
| CN219875102U (en) | Dynamic reactive power compensation device and voltage regulating type magnetic control phase modulator | |
| CN219759367U (en) | Magnetic control voltage regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |