CN1601846A - Static reactive compensator able to continuously regulating capacity reactive - Google Patents
Static reactive compensator able to continuously regulating capacity reactive Download PDFInfo
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- CN1601846A CN1601846A CN 200410043933 CN200410043933A CN1601846A CN 1601846 A CN1601846 A CN 1601846A CN 200410043933 CN200410043933 CN 200410043933 CN 200410043933 A CN200410043933 A CN 200410043933A CN 1601846 A CN1601846 A CN 1601846A
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- compensating unit
- main
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- switch
- phase
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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
Abstract
The compensator is composed of three compensation units in same structure. Tail end of main switch is connected to head end of auxiliary switch. A buffer circuit is connected between head end of the main switch and tail end of auxiliary switch. One end of compensation capacitance is connected to '+' end at secondary side. Another end of compensation capacitance is connected to head end of the main switch. '+' end at primary side is connected to tail end of the main switch. Each tail end of auxiliary switch of each compensation unit is connected to one point. '-' end at primary side of transformer in each compensation unit is connected to one point, and '-' end at secondary side of transformer in each compensation unit is connected to one point.
Description
Technical field:
The present invention relates to regulate continuously in a kind of electric power system the compensator of capacitive reactive power, belong to electrical technology field.
Background technology:
The great majority load is a consume reactive power in the electric power system, if there is a large amount of reactive powers to flow in the supply line, can cause the power supply capacity of electrical network to be not fully utilized, cause the lot of energy loss simultaneously, so reactive power compensation is the energy-saving and cost-reducing requisite measure of electric power system.Inductive load accounts for the overwhelming majority in load or burden without work at present, and these loads are constantly to change to idle demand, so the main task of reactive-load compensator provides continuously adjustable capacitive reactive power in actual applications.Development along with power electronic technology, the static compensator (SVC) of thyristor-controlled reactor (TCR) and thyristor switchable capacitor (TSC) form has obtained extensive use, but TCR can produce low-order harmonic, needs extra filter, TSC is a grading control, can not regulate continuously.Provide continuously adjustable capacitive reactive power need take the form of TCR+FC (fixed capacitor group) or TCR+TSC.There is data to mention a kind of PWM (pulse modulation technology) type SVC recently regulates reactor by the duty of control switch equivalent reactance, it compares generation with TCR harmonic wave is little, response speed is fast, but need cooperate the continuous adjusting that could realize capacitive reactive power with FC and TSC equally, and this regulative mode, reduce the utilance of compensating element,, increased loss.The Static Var Compensator STATCOM based on voltage-type or current mode bridge-type unsteady flow structure of Ti Chuing has more satisfactory compensation characteristic in recent years, but the structure of this compensator is very complicated, is difficult to realize industrialization.
Summary of the invention:
The Static Var Compensator that the purpose of this invention is to provide a kind of continuous adjusting capacitive reactive power, the defective that it has overcome the existing easy generation harmonic wave of traditional Static Var Compensator, can not regulate continuously, increase the element loss, be difficult to realize.The present invention comprises three phase mains 1, perceptual load or burden without work 2, and the output of each phase of the three-phase of three phase mains 1 is connected with a corresponding end of three inputs of perceptual load or burden without work 2 respectively, and it also comprises compensator 4.Compensator 4 is made up of three identical compensating unit 4-1, compensating unit 4-2, compensating unit 4-3 of structure.The head end of compensating unit 4-1 is connected with the A phase output terminal of three phase mains 1, and the head end of compensating unit 4-2 is connected with the B phase output terminal of three phase mains 1, and the head end of compensating unit 4-3 is connected with the C phase output terminal of three phase mains 1.Compensating unit 4-1 is by main switch 4-1-1, auxiliary switch 4-1-2, buffer circuit 4-1-3, building-out capacitor C
a, transformer T
aForm.The head end of main switch 4-1-1 is exactly the head end of compensating unit 4-1, and the end of main switch 4-1-1 is connected with the head end of auxiliary switch 4-1-2.Buffer circuit 4-1-3 is connected in parallel between the end of the head end of main switch 4-1-1 and auxiliary switch 4-1-2.Building-out capacitor C
aAn end and transformer T
aSecondary "+" end connect building-out capacitor C
aThe other end be connected transformer T with the head end of main switch 4-1-1
aFormer limit "+" end be connected with the end of main switch 4-1-1.The composition of compensating unit 4-2, compensating unit 4-3 is identical with composition and the annexation of compensating unit 4-1 with annexation.The terminal tandem of the end of the end of the auxiliary switch 4-1-2 of compensating unit 4-1, the auxiliary switch 4-2-2 of compensating unit 4-2, the auxiliary switch 4-3-2 of compensating unit 4-3 is in a bit, the transformer T of compensating unit 4-1
aFormer limit "-" end, the transformer T of compensating unit 4-2
bFormer limit "-" end, the transformer T of compensating unit 4-3
cThe tandem of former limit "-" end in a bit, the transformer T of compensating unit 4-1
aSecondary "-" end, the transformer T of compensating unit 4-2
bSecondary "-" the end tandem of transformer Tc of secondary "-" end, compensating unit 4-3 in a bit.Operation principle: the present invention combines PWM type AC-AC converter directly to regulate voltage on the building-out capacitor with transformer, and then makes compensator can export the continually varying capacitive reactive power.T
a, T
b, T
cBe that no-load voltage ratio is 1: 1 a transformer, play a part former and deputy limit and isolate.C
a, C
b, C
cBe building-out capacitor, connect, for load provides required reactive power with the transformer secondary.S
1, S
2, S
3Be main self-on-off switching, S
4, S
5, S
6Be auxiliary self-on-off switching.Main self-on-off switching S
1, S
2, S
3Periodically turn on and off the former limit and the three-phase alternating-current supply of transformer, and auxiliary self-on-off switching S
4, S
5, S
6At main self-on-off switching S
1, S
2, S
3Blocking interval allows the primary current afterflow of transformer, therefore main self-on-off switching S
1, S
2, S
3With auxiliary self-on-off switching S
4, S
5, S
6The relation of turn-on and turn-off is complementary.When switch state, cause power supply short circuit in order to prevent two switches conducting simultaneously on the same brachium pontis, certain Dead Time must be set.For current path being provided in Dead Time, for the former limit of transformer, guarantee that the transformer primary current does not suddenly change, and installs the buffer circuit that is composed in parallel by resistance and electric capacity additional on the brachium pontis in Dead Time.Compensator has three kinds of mode of operations in a switch periods like this, i.e. effective model, bypass mode and afterflow pattern.
A. effective model
In this state, main self-on-off switching S
1, S
2, S
3Open-minded, and auxiliary self-on-off switching S
4, S
5, S
6Turn-off, the former limit of transformer by self-on-off switching or with it diode connected in parallel be connected on the electrical network, the original edge voltage of transformer is exactly a system voltage.And primary current passes through the former limit of one or two main self-on-off switching and two or one parallel diode inflow transformers, and its concrete condition depends on the sense of current on the former limit of transformer.
B. afterflow pattern
In this state, main self-on-off switching S
1, S
2, S
3Turn-off, and auxiliary self-on-off switching S
4, S
5, S
6Open-minded.The former limit of transformer and electrical network disconnect, so voltage is zero, and primary current makes the magnetic flux of transformer core can not suddenly change by one or two auxiliary self-on-off switching and two or a parallel diode afterflow.
C. bypass mode
In the Dead Time of effective model and afterflow mode switch, all switching devices all are in off state, the former limit of transformer connects with electrical network by buffer circuit, it is continuous to keep primary current by the parallel diode of the parallel diode of one or two main self-on-off switching and two or one auxiliary self-on-off switchings and buffer circuit, the sub-fraction energy is stored in the buffer capacitor, and energy absorbs by buffer resistance.
The invention provides a kind of novel reactive-load compensator.This compensator can recently change the equivalent capacitive reactance of building-out capacitor by the duty that continuously changes self-on-off switching, thereby regulates the idle output of compensator continuously.The major advantage of this compensator is:
(1) need not perceptual idle covering, can realize continuous capacitive reactive power output, reduced the consumption of energy.
(2) PWM control does not need and synchronized, and is simple and reliable, is easy to realize.
(3) capacity of transformer is 25% of a building-out capacitor capacity only, has reduced the volume of device, has reduced the cost of device.
(4) do not inject low-order harmonic to system, the high order harmonic component that compensator produces can be by the filter filtering than low capacity near switching frequency.
Embodiment:
Embodiment one: present embodiment is with reference to Fig. 1, and it is made up of three phase mains 1, perceptual load or burden without work 2, compensator 4.The output of each phase of the three-phase of three phase mains 1 is connected with a corresponding end of three inputs of perceptual load or burden without work 2 respectively.Compensator 4 is made up of three identical compensating unit 4-1, compensating unit 4-2, compensating unit 4-3 of structure.The head end of compensating unit 4-1 is connected with the A phase output terminal of three phase mains 1, and the head end of compensating unit 4-2 is connected with the B phase output terminal of three phase mains 1, and the head end of compensating unit 4-3 is connected with the C phase output terminal of three phase mains 1.Compensating unit 4-1 is by main switch 4-1-1, auxiliary switch 4-1-2, buffer circuit 4-1-3, building-out capacitor C
a, transformer T
aForm.The head end of main switch 4-1-1 is exactly the head end of compensating unit 4-1, and the end of main switch 4-1-1 is connected with the head end of auxiliary switch 4-1-2, and buffer circuit 4-1-3 is connected in parallel between the end of the head end of main switch 4-1-1 and auxiliary switch 4-1-2, building-out capacitor C
aAn end and transformer T
aSecondary "+" end connect building-out capacitor C
aThe other end be connected transformer T with the head end of main switch 4-1-1
aFormer limit "+" end be connected with the end of main switch 4-1-1.The composition of compensating unit 4-2, compensating unit 4-3 is identical with composition and the annexation of compensating unit 4-1 with annexation.The terminal tandem of the end of the end of the auxiliary switch 4-1-2 of compensating unit 4-1, the auxiliary switch 4-2-2 of compensating unit 4-2, the auxiliary switch 4-3-2 of compensating unit 4-3 is in a bit, the transformer T of compensating unit 4-1
aFormer limit "-" end, the transformer T of compensating unit 4-2
bFormer limit "-" end, the transformer T of compensating unit 4-3
cThe tandem of former limit "-" end in a bit, the transformer T of compensating unit 4-1
aSecondary "-" end, the transformer T of compensating unit 4-2
bSecondary "-" end, the transformer T of compensating unit 4-3
cThe tandem of secondary "-" end in a bit.Described main switch 4-1-1 is by main self-on-off switching S
1, diode D
1Form main self-on-off switching S
1Collector electrode and diode D
1Negative electrode connect, as the head end of main switch, main self-on-off switching S
1Emitter and diode D
1Anode connect, as the end of main switch.The composition of described auxiliary switch 4-1-2 is identical with composition and the annexation of main switch 4-1-1 with annexation.Described buffer circuit 4-1-3 is by capacitor C
Pa, resistance R
PaCompose in parallel.
Embodiment two: with reference to Fig. 1, what present embodiment and embodiment one were different is, it also comprises high pass filter 3, and high pass filter 3 is by the first input reactance device L
Fa, the second input reactance device L
Fb, the 3rd input reactance device L
Fc, the first capacitor C
Fa, the second capacitor C
Fb, the 3rd capacitor C
FcForm.The head end of the compensating unit 4-1 of compensator 4 is by the first input reactance device L
FaConnect the output of A phase power supply, the head end of compensating unit 4-2 is by the second input reactance device L
FbConnect the output of B phase power supply, the head end of compensating unit 4-3 is by the 3rd input reactance device L
FcConnect the output of C phase power supply, the first capacitor C
FaThe head end of a termination compensating unit 4-1, the second capacitor C
FbThe head end of a termination compensating unit 4-2, the 3rd capacitor C
FcThe head end of a termination compensating unit 4-3, the first capacitor C
FaThe other end, the second capacitor C
FbThe other end, the 3rd capacitor C
FcOther end tandem in a bit.The effect of high pass filter 3 is the high order harmonic components in the filtering compensator input current.
Embodiment three: with reference to Fig. 2, the difference of present embodiment and embodiment one, embodiment two is, the compensator 4 in the embodiment one by the main compensator 4 in the present embodiment ' and switch 4 " form.Main compensator 4 ' form by three identical main compensating unit 4 '-1, main compensating unit 4 '-2, main compensating unit 4 '-3 of structure.Main compensating unit 4 '-1 is by main switch 4-1-1, buffer circuit 4-1-3, transformer T
a, building-out capacitor C
aForm main switch 4-1-1, transformer T
a, building-out capacitor C
a, buffer circuit 4-1-3 annexation each other is identical with embodiment one.Switch 4 " by three-phase commutation bridge 4 "-1, auxiliary switch 4-1-2 form." 1 by six diode D for three-phase commutation bridge 4
5-D
10Form diode D
5Anode and diode D
8Negative electrode connect diode D
6Anode and diode D
9Negative electrode connect diode D
7Anode and diode D
10Negative electrode connect diode D
5Negative electrode, diode D
6Negative electrode, diode D
7Negative electrode and the head end tandem of auxiliary switch 4-1-2 in a bit, diode D
8Anode, diode D
9Anode, diode D
10Anode and the terminal tandem of auxiliary switch 4-1-2 in a bit.The composition and the annexation of the auxiliary switch in the composition of auxiliary switch 4-1-2 and annexation and the embodiment one are identical.The end of the main switch 4-1-1 of main compensating unit 4 '-1 connects three-phase commutation bridge 4 " diode D in 1
7Anode.The end of the main switch 4-2-1 of main compensating unit 4 '-2 connects three-phase commutation bridge 4 " diode D in 1
6Anode.The end of the main switch 4-3-1 of main compensating unit 4 '-3 connects three-phase commutation bridge 4 " diode D in 1
5Anode.The other end of the other end of the other end of the buffer circuit 4-1-3 of main compensating unit 4 '-1, the buffer circuit 4-2-3 of main compensating unit 4 '-2, the buffer circuit 4-3-3 of main compensating unit 4 '-3 is connected with the end of auxiliary switch 4-1-2.
Claims (5)
1, regulate the Static Var Compensator of capacitive reactive power continuously, it comprises three phase mains (1), perception load or burden without work (2), the output of each phase of the three-phase of three phase mains (1) is connected with a corresponding end of three inputs of perceptual load or burden without work (2) respectively, it is characterized in that it also comprises compensator (4), compensator (4) is by three compensating units (4-1) that structure is identical, compensating unit (4-2), compensating unit (4-3) is formed, the head end of compensating unit (4-1) is connected with the A phase output terminal of three phase mains (1), the head end of compensating unit (4-2) is connected with the B phase output terminal of three phase mains (1), the head end of compensating unit (4-3) is connected with the C phase output terminal of three phase mains (1), and compensating unit (4-1) is by main switch (4-1-1), auxiliary switch (4-1-2), buffer circuit (4-1-3), building-out capacitor (C
a), transformer (T
a) form, the head end of main switch (4-1-1) is exactly the head end of compensating unit (4-1), the end of main switch (4-1-1) is connected with the head end of auxiliary switch (4-1-2), buffer circuit (4-1-3) is connected in parallel between the end of the head end of main switch (4-1-1) and auxiliary switch (4-1-2), building-out capacitor (C
a) an end and transformer (T
a) secondary "+" end connect building-out capacitor (C
a) the other end be connected transformer (T with the head end of main switch (4-1-1)
a) former limit "+" end be connected with the end of main switch (4-1-1), the terminal tandem of the end of the end of the auxiliary switch (4-1-2) of compensating unit (4-1), the auxiliary switch (4-2-2) of compensating unit (4-2), the auxiliary switch (4-3-2) of compensating unit (4-3) is in a bit, the transformer (T of compensating unit (4-1)
a) former limit "-" end, the transformer (T of compensating unit (4-2)
b) former limit "-" end, the transformer (T of compensating unit (4-3)
c) the tandem of former limit "-" end in a bit, the transformer (T of compensating unit (4-1)
a) secondary "-" end, the transformer (T of compensating unit (4-2)
b) secondary "-" end, the transformer (T of compensating unit (4-3)
c) the tandem of secondary "-" end in a bit.
2, the Static Var Compensator of continuous adjusting capacitive reactive power according to claim 1 is characterized in that it also comprises high pass filter (3), and high pass filter (3) is by the first input reactance device (L
Fa), the second input reactance device (L
Fb), the 3rd input reactance device (L
Fc), the first capacitor (C
Fa), the second capacitor (C
Fb), the 3rd capacitor (C
Fc) form, the head end of the compensating unit (4-1) of compensator (4) is by the first input reactance device (L
Fa) connecing the output of A phase power supply, the head end of compensating unit (4-2) is by the second input reactance device (L
Fb) connecing the output of B phase power supply, the head end of compensating unit (4-3) is by the 3rd input reactance device (L
Fc) connect the output of C phase power supply, the first capacitor (C
Fa) the head end of a termination compensating unit (4-1), the second capacitor (C
Fba) the head end of a termination compensating unit (4-2), the 3rd capacitor (C
Fca) the head end of a termination compensating unit (4-3), the first capacitor (C
Fa) the other end, the second capacitor (C
Fb) the other end, the 3rd capacitor (C
Fc) other end tandem in a bit.
3, the Static Var Compensator of continuous adjusting capacitive reactive power according to claim 1 and 2, it is characterized in that (form; main compensator (4 ') is made up of three identical main compensating unit (4 '-1), main compensating unit (4 '-2), main compensating units (4 '-3) of structure, and main compensating unit (4 '-1) is by main switch (4-1-1), buffer circuit (4-1-3), transformer (T by 4 ") by main compensator (4 ') and switch for compensator (4)
a), building-out capacitor (C
a) form, switch (4 ") is made up of three-phase commutation bridge (4 "-1), auxiliary switch (4-1-2), and three-phase commutation bridge (4 " 1) by six diode (D
5-D
10) form diode (D
5) anode and diode (D
8) negative electrode connect diode (D
6) anode and diode (D
9) negative electrode connect diode (D
7) anode and diode (D
10) negative electrode connect diode (D
5) negative electrode, diode (D
6) negative electrode, diode (D
7) negative electrode and the head end tandem of auxiliary switch (4-1-2) in a bit, diode (D
8) anode, diode (D
9) anode, diode (D
10) anode and the terminal tandem of auxiliary switch (4-1-2) in a bit, the end of the main switch (4-1-1) of main compensating unit (4 '-1) meets diode (D in the three-phase commutation bridge (4 " 1)
7) anode, the end of the main switch (4-2-1) of main compensating unit (4 '-2) meets diode (D in the three-phase commutation bridge (4 " 1)
6) anode, the end of the main switch (4-3-1) of main compensating unit (4 '-3) meets diode (D in the three-phase commutation bridge (4 " 1)
5) anode, the other end of the other end of the buffer circuit (4-2-3) of the other end of the buffer circuit (4-1-3) of main compensating unit (4 '-1), main compensating unit (4 '-2), the buffer circuit (4-3-3) of main compensating unit (4 '-3) is connected with the end of auxiliary switch (4-1-2).
4, the Static Var Compensator of continuous adjusting capacitive reactive power according to claim 3 is characterized in that main switch (4-1-1) is by main self-on-off switching (S
1), diode (D
1) form main self-on-off switching (S
1) collector electrode and diode (D
1) negative electrode connect main self-on-off switching (S
1) emitter and diode (D
1) anode connect.
5, the Static Var Compensator of continuous adjusting capacitive reactive power according to claim 3 is characterized in that buffer circuit (4-1-3) is by electric capacity (C
Pa), resistance (R
Pa) compose in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100439335A CN100347923C (en) | 2004-10-13 | 2004-10-13 | Static reactive compensator able to continuously regulating capacity reactive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100439335A CN100347923C (en) | 2004-10-13 | 2004-10-13 | Static reactive compensator able to continuously regulating capacity reactive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601846A true CN1601846A (en) | 2005-03-30 |
| CN100347923C CN100347923C (en) | 2007-11-07 |
Family
ID=34665522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100439335A Expired - Fee Related CN100347923C (en) | 2004-10-13 | 2004-10-13 | Static reactive compensator able to continuously regulating capacity reactive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100347923C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010017662A1 (en) * | 2008-08-15 | 2010-02-18 | Lv Shuming | Power saving device |
| CN101783597A (en) * | 2010-03-31 | 2010-07-21 | 山东新风光电子科技发展有限公司 | Dynamic reactive compensation device based on direct current side active structure and amplitude adjustment control |
| CN102857112A (en) * | 2011-06-30 | 2013-01-02 | 上海市电力公司 | Chopper for reactive compensation apparatus |
| CN102983576A (en) * | 2011-09-07 | 2013-03-20 | 上海市电力公司 | Single-phase equivalent circuit of power module for reactive compensation system |
| CN103023050A (en) * | 2012-12-27 | 2013-04-03 | 安徽天沃电气技术有限公司 | Reactive compensation device with variable capacitor module and variable capacitor module |
| CN103197593A (en) * | 2013-03-26 | 2013-07-10 | 杭州电子科技大学 | Adjustable capacitor circuit capable of precisely adjusting figures |
| CN103972978A (en) * | 2014-05-07 | 2014-08-06 | 厦门科华恒盛股份有限公司 | Uninterruptible power supply and battery sharing system and control method thereof |
| CN106451484A (en) * | 2016-08-30 | 2017-02-22 | 新疆成和天利能源科技股份有限公司 | Intelligent dynamic reactive compensation apparatus for oil field, and application method |
| CN107294110A (en) * | 2017-06-30 | 2017-10-24 | 三峡大学 | A kind of continuous reactive power compensating circuit and control method |
| CN108599189A (en) * | 2018-06-27 | 2018-09-28 | 南京申宁达智能科技有限公司 | The single-phase Static Var Compensator that two-way can be continuously adjusted |
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| JP3353658B2 (en) * | 1997-07-23 | 2002-12-03 | 松下電器産業株式会社 | Static var compensator |
| CN1101070C (en) * | 2000-09-05 | 2003-02-05 | 上海交通大学 | Electric network reactive-load continuous compensation method and its compensation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010017662A1 (en) * | 2008-08-15 | 2010-02-18 | Lv Shuming | Power saving device |
| CN101783597A (en) * | 2010-03-31 | 2010-07-21 | 山东新风光电子科技发展有限公司 | Dynamic reactive compensation device based on direct current side active structure and amplitude adjustment control |
| CN102857112A (en) * | 2011-06-30 | 2013-01-02 | 上海市电力公司 | Chopper for reactive compensation apparatus |
| CN102983576A (en) * | 2011-09-07 | 2013-03-20 | 上海市电力公司 | Single-phase equivalent circuit of power module for reactive compensation system |
| CN103023050A (en) * | 2012-12-27 | 2013-04-03 | 安徽天沃电气技术有限公司 | Reactive compensation device with variable capacitor module and variable capacitor module |
| CN103197593A (en) * | 2013-03-26 | 2013-07-10 | 杭州电子科技大学 | Adjustable capacitor circuit capable of precisely adjusting figures |
| CN103972978A (en) * | 2014-05-07 | 2014-08-06 | 厦门科华恒盛股份有限公司 | Uninterruptible power supply and battery sharing system and control method thereof |
| CN106451484A (en) * | 2016-08-30 | 2017-02-22 | 新疆成和天利能源科技股份有限公司 | Intelligent dynamic reactive compensation apparatus for oil field, and application method |
| CN107294110A (en) * | 2017-06-30 | 2017-10-24 | 三峡大学 | A kind of continuous reactive power compensating circuit and control method |
| CN108599189A (en) * | 2018-06-27 | 2018-09-28 | 南京申宁达智能科技有限公司 | The single-phase Static Var Compensator that two-way can be continuously adjusted |
| CN108808695A (en) * | 2018-06-27 | 2018-11-13 | 南京申宁达智能科技有限公司 | A kind of three phase static reactive compensation system and its control method |
| CN108808695B (en) * | 2018-06-27 | 2021-08-06 | 南京申宁达智能科技有限公司 | Three-phase static reactive power compensation system and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN100347923C (en) | 2007-11-07 |
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