CN1262543A - REgulatable reactor system based on magnetic flux compensation - Google Patents
REgulatable reactor system based on magnetic flux compensation Download PDFInfo
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- CN1262543A CN1262543A CN 00114356 CN00114356A CN1262543A CN 1262543 A CN1262543 A CN 1262543A CN 00114356 CN00114356 CN 00114356 CN 00114356 A CN00114356 A CN 00114356A CN 1262543 A CN1262543 A CN 1262543A
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- reactor system
- regulatable reactor
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- transformer
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Abstract
A regulatable reactor system based on magnetic flux compensation is disclosed. A current detecting and processing unit is composed of electric network bus, current transformer and current signal processing unit.Said current transformer is set up on said bus and is sequentially connected to current signal processing unit, control unit, transformer unit and secondary winding of serial transformer. The primary winding of serial transformer is serially connected with said bus. Its advantages are simple system, high response speed, high insulation between bus and control system, high safety and reliability, low loss and low cost.
Description
The invention belongs to power system automatic field, be a kind of REgulatable reactor system based on flux compensation.
The development of power electronic technology makes flexible transmission technology (FACTS) earn widespread respect in the control automatically in electric power system, thought over a long period of time and unmodifiable system parameters (for example voltage, phase place, impedance etc.) all be hopeful to realize control flexibly after the employing FACTS technology.In considerable FACTS control device, its core component is exactly the Regulatable reactor that is operated under high voltage, the big electric current operating mode.For example, the electric power system fault demand limiter is exactly one of FACTS control device.Conclusion is got up, and the current fault current limiter of studying, testing can be divided into following two classes:
1, with QA transistor (GTO) switch and the fault current limiter that constitutes in parallel that turn-off with impedance.During normal the operation, the complete conducting of GTO, when fault current reached set point, GTO turn-offed, and impedance is sealed in the electrical network bus and is played metering function.The shortcoming of this flow restricter be the GTO long-time running in the high-voltage great-current operating mode, poor reliability, device loss are big, heat dissipation problem is difficult to solve, and the control system complexity, cost an arm and a leg.The list of references of this type of technology has: T.Ueda, Solid-state currentlimiter for power distribution system, IEEE Transaction on Power delivery.Vol.4, pp.1796, Oct.1993.
2, superconductive current limiter.The domestic and international expert of superconductive current limiter has carried out a large amount of research work, and the representative article that domestic and international expert delivers has: " the electric power application study progress of superconductive failure current limiter ", Ye Lin, Automation of Electric Systems, Vol.23, NO.7,1999.4.Because the superconductive system technical sophistication, the rectifier cell long-term work is in the high-voltage great-current operating mode, so poor reliability, the loss that device adds is also big, costs an arm and a leg.
The objective of the invention is at problems of the prior art and deficiency, propose that a kind of response speed is fast, the system configuration simple operation reliable, the loss ratio prior art wants much smaller, based on the high REgulatable reactor system of flux compensation.
The said REgulatable reactor system based on flux compensation of the present invention mainly is made up of four unit: i.e. current detecting and processing unit I, control unit II, inverter unit III, series transformer IV.Its system is constructed as follows:
Current detecting and processing unit I are made up of electrical network bus 1, current transformer 2 and current signal processing links 3, and current transformer 2 is placed on the electrical network bus 1, and the output of current transformer 2 is connected with current signal processing links 3; Current detecting and processing unit I are connected with control unit II, control unit II is connected with inverter unit III, inverter unit III is connected with secondary side's winding of series transformer IV, and former side's winding and the bus 1 of series transformer IV are in series.
The operation principle of the said REgulatable reactor system based on flux compensation of the present invention is:
When the electric power system operate as normal, obtain current signal i by current detecting and processing unit I
LsWith obtained current signal i
LsDeliver among the control unit II control signal F of control unit II output
1Deliver to inverter unit III, inverter unit III output current i
l *Deliver among the series transformer IV pair side winding ax, control unit II makes i
l *Follow the tracks of i
l, and make W
AXI
l+ W
AxI
l *=0, thus make main flux Φ in the series transformer IV iron core
m=0, be connected on the former side's winding of the transformer pressure drop U in the electrical network bus
AX≈ 0.At this moment, series transformer IV does not have influence to operation of power networks.
When electric power system is broken down, and fault current is when reaching set-point, current detecting and processing unit I output current signal i
FcIn control unit II, control unit II exports control signal F immediately
o, turn-off the inverter among the inverter unit III, making inverter unit III output current is zero, even i
l *=0, series transformer pair side winding open circuit, the excitation impedance Z of former side's winding
mSeal in the electrical network bus immediately, fault current is limited in set point.When in case of necessity, can be from control unit II main control unit command end input instruction F
I1(or F
I0), control unit II output signal F then
1(or F
0) this, thereby series transformer IVAX port presented like zero impedance (or high impedance Z
m).
The said REgulatable reactor system based on flux compensation of the present invention compared with prior art has following advantage:
1, the Regulatable reactor of indication of the present invention is based on the flux compensation principle, and by control, magnetic flux can change to maximum from zero, and to excitation impedance, response speed is very fast from the approximate zero impedance variation in the AX terminal impedance of corresponding series transformer IV.
2, the present invention adopts series transformer that high pressure (former side's winding) and control system (secondary side's winding) are kept apart, control system with can adopt the low voltage components and parts, control system is simple, safe and reliable, can also not have a power failure to change the control board plug-in unit.
3, the present invention can adopt hybrid power electronic device, loss ratio prior art much lower in control system, need not to join in addition dedicated cooling system.
4, owing to above advantage, the present invention is more much lower than prior art on price.
Fig. 1: based on the REgulatable reactor system theory diagram of flux compensation;
Fig. 2: the fault current limiter principle schematic that the band string is mended;
Fig. 3: controllable series capacitance compensator schematic diagram;
Fig. 4: the adjustable series reactor schematic diagram of shunt capacitor;
Fig. 5: adjustable shunt reactor schematic diagram;
Fig. 6: from motion tracking arc suppression coil Regulatable reactor schematic diagram;
Fig. 7: the illustration intention is used in two Regulatable reactor series operations.
Below in conjunction with accompanying drawing REgulatable reactor system and the principle based on flux compensation of the present invention is further described.
Said work condition state was that the impedance of AX end among the series transformer IV equals zero and equals maximum Z during technology constituted in front
mTwo extreme cases.When the reactance value of series transformer AX port being transferred to Z
m(0＜Z
L＜Z
m) time, can in control unit II, import corresponding master signal instruction F
I, control unit II instructs F according to master control
IWith current signal i from current detecting and processing unit I
Ls, output control signal F
mTo inverter unit III, make inverter unit III output current i
l *, i
l *From motion tracking i
l, and make composite magnetic power (W
AXI
l+ W
AxI
l *) generation main flux Φ in iron core
mThereby the former side's winding of the series transformer IV pressure drop that is connected in the electrical network bus is U
AX, electric current is i in former side's winding
l, the AX port presents reactance Z '
L, work as Z '
LWith the reactance value Z that adjusts
LWhen error surpassed set-point, control unit II can be revised automatically, its reactance value Z
LArrive maximum Z zero
mBetween change continuously, to be suitable for the needs of operating modes such as controllable silicon string benefit.
Adopt the said system configuration form that can be constructed as follows of the present invention based on the REgulatable reactor system of flux compensation:
The fault current limiter (as shown in Figure 2) that the band string is mended;
Controllable series compensator (as Fig. 2, shown in Figure 3);
The adjustable series reactor (as shown in Figure 4) of shunt capacitor;
Adjustable shunt reactor (as shown in Figure 5);
From motion tracking arc-extinguishing system Regulatable reactor (as shown in Figure 6);
In addition, the said Regulatable reactor based on flux compensation of the present invention can be with two or more reactor series operations (as shown in Figure 7).
Regulatable reactor in the controllable impedance symbol L presentation graphs 1 in Fig. 2 to Fig. 7 based on flux compensation.
Grounding transformer in the automatic arc-extinguishing system of symbol 4 expressions among Fig. 6.
Claims (7)
1, a kind of REgulatable reactor system that adopts based on flux compensation, by current detecting and processing unit I, control unit II, inverter unit III, series transformer IV forms four unit, it is characterized in that, current detecting and processing unit I are by electrical network bus 1, current transformer 2 and current signal processing links 3 are formed, current transformer 2 is placed on the electrical network bus 1, the output of current transformer 2 is connected with current signal processing links 3: current detecting and processing unit I are connected with control unit II, control unit II is connected with inverter unit III, inverter unit III is connected with secondary side's winding of series transformer IV, and former side's winding and the bus 1 of series transformer IV are in series.
2, according to the said REgulatable reactor system of claim 1, it is characterized in that, adopt said REgulatable reactor system to can be used for constituting the fault current limiter that the band string is mended based on flux compensation.
3, according to the said REgulatable reactor system of claim 1, it is characterized in that, adopt said REgulatable reactor system to can be used for constituting the thyristor controlled series capacitor device based on flux compensation.
4, according to the said REgulatable reactor system of claim 1, it is characterized in that, adopt said REgulatable reactor system to can be used for constituting the adjustable series reactor of shunt capacitor based on flux compensation.
5, according to the said REgulatable reactor system of claim 1, it is characterized in that, adopt said REgulatable reactor system to can be used for constituting adjustable shunt reactor based on flux compensation.
6, according to the said REgulatable reactor system of claim 1, it is characterized in that, adopt said REgulatable reactor system to can be used for constituting from motion tracking arc suppression coil reactor based on flux compensation.
7, according to the said REgulatable reactor system of claim 1, it is characterized in that, two or more said Regulatable reactor series operations based on flux compensation can be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001143565A CN1138330C (en) | 2000-01-27 | 2000-01-27 | Regulatable reactor system based on magnetic flux compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001143565A CN1138330C (en) | 2000-01-27 | 2000-01-27 | Regulatable reactor system based on magnetic flux compensation |
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| Publication Number | Publication Date |
|---|---|
| CN1262543A true CN1262543A (en) | 2000-08-09 |
| CN1138330C CN1138330C (en) | 2004-02-11 |
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|---|---|---|---|
| CNB001143565A Expired - Fee Related CN1138330C (en) | 2000-01-27 | 2000-01-27 | Regulatable reactor system based on magnetic flux compensation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295837C (en) * | 2003-06-05 | 2007-01-17 | 华中科技大学 | High-capacity controllable reactor |
| CN100433491C (en) * | 2005-07-29 | 2008-11-12 | 华中科技大学 | Magnetic potential balance controllable adjustable reactor |
| CN102412585A (en) * | 2011-12-02 | 2012-04-11 | 沈阳工业大学 | Controller capable of converting magnetic properties of two phases of iron core, as well as controlling method thereof |
| CN102684182A (en) * | 2012-05-29 | 2012-09-19 | 广州智光电气股份有限公司 | Arc extinction grounding device |
| CN104953570A (en) * | 2015-04-27 | 2015-09-30 | 深圳市今朝时代新能源技术有限公司 | Fault current limiter |
| CN105702418A (en) * | 2015-12-09 | 2016-06-22 | 国家电网公司 | Magnetic flux control-based adjustable reactor |
| CN106877352A (en) * | 2015-11-10 | 2017-06-20 | 西门子公司 | Stepless adjustable saturation compensation reactor |
-
2000
- 2000-01-27 CN CNB001143565A patent/CN1138330C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295837C (en) * | 2003-06-05 | 2007-01-17 | 华中科技大学 | High-capacity controllable reactor |
| CN100433491C (en) * | 2005-07-29 | 2008-11-12 | 华中科技大学 | Magnetic potential balance controllable adjustable reactor |
| CN102412585A (en) * | 2011-12-02 | 2012-04-11 | 沈阳工业大学 | Controller capable of converting magnetic properties of two phases of iron core, as well as controlling method thereof |
| CN102684182A (en) * | 2012-05-29 | 2012-09-19 | 广州智光电气股份有限公司 | Arc extinction grounding device |
| CN102684182B (en) * | 2012-05-29 | 2014-10-08 | 广州智光电气股份有限公司 | Arc extinction grounding device |
| CN104953570A (en) * | 2015-04-27 | 2015-09-30 | 深圳市今朝时代新能源技术有限公司 | Fault current limiter |
| CN106877352A (en) * | 2015-11-10 | 2017-06-20 | 西门子公司 | Stepless adjustable saturation compensation reactor |
| CN105702418A (en) * | 2015-12-09 | 2016-06-22 | 国家电网公司 | Magnetic flux control-based adjustable reactor |
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| Publication number | Publication date |
|---|---|
| CN1138330C (en) | 2004-02-11 |
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Granted publication date: 20040211 Termination date: 20110127 |