CN204243749U - Based on the REgulatable reactor system of flux compensation - Google Patents
Based on the REgulatable reactor system of flux compensation Download PDFInfo
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- CN204243749U CN204243749U CN201420633925.5U CN201420633925U CN204243749U CN 204243749 U CN204243749 U CN 204243749U CN 201420633925 U CN201420633925 U CN 201420633925U CN 204243749 U CN204243749 U CN 204243749U
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- regulatable reactor
- flux compensation
- reactor system
- system based
- current
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- 230000004907 flux Effects 0.000 title claims abstract description 33
- 238000004804 winding Methods 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Abstract
A kind of REgulatable reactor system based on flux compensation, current detecting and processing unit I are made up of electrical network bus, current transformer and current signal processing links, current transformer to be arranged on bus and to be connected successively with pair side's winding of Shen Lian transformer IV with current signal processing links, control unit II, inverter unit III, and former side's winding and the bus of Shen connection transformer IV are in series.Regulatable reactor described in the utility model has that system is simple, fast response time, and bus high pressure is isolated with control system, and control system can adopt lower voltage devices, safe and reliable, turn round consume low, the advantages such as low price.
Description
Technical field
The utility model belongs to power system automatic field, for a kind of based on the REgulatable reactor system of flux compensation.
Background technology
The development of power electronic technology makes flexible transmission technology (FACTS) earn widespread respect in electric power system controls automatically, think over a long period of time and after adopting FACTS technology, be all hopeful unmodifiable system parameters (such as voltage, phase place, impedance etc.) to realize controlling flexibly.In considerable FACTS control device, its core component is exactly the Regulatable reactor be operated under high voltage, big current operating mode.Such as, power system fault current limiter is exactly one of FACTS control device.The fault current limiter be summed up, currently study, tested can be divided into following two classes::
1, in parallel with impedance with QA breakable transistor (GTO) switch and the fault current limiter formed.During normal operation, the complete conducting of GTO, when fault current reaches set point, GTO turns off, and impedance is sealed in electrical network bus and plays metering function.The shortcoming of this flow restricter be GTO long-time running in high-voltage great-current operating mode, poor reliability, device loss are large, heat dissipation problem is difficult to solve, and control system is complicated, expensive.The list of references of this type of technology has: T.Ueda, Solid-state current limiter for power distribution system, IEEE Transaction onPower 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.Due to superconductive system technical sophistication, rectifier cell long-term work is in high-voltage great-current operating mode, therefore poor reliability, the loss that device adds is also large, expensive.
Utility model content
The purpose of this utility model is for problems of the prior art and deficiency, proposes a kind of fast response time, system configuration is simple, reliable, loss ratio prior art is much smaller, based on the REgulatable reactor system of flux compensation.
REgulatable reactor system based on flux compensation described in the utility model, primarily of four unit composition: i.e. current detecting and processing unit I, control unit II, inverter unit III, series transformer IV.Being constructed as follows of its system:
Current detecting and processing unit are that I is made up of electrical network bus 1, current transformer 2 and current signal processing links 3, and current transformer 2 is placed on 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, and control unit II is connected with inverter unit III, and inverter unit III is connected with the vice-side winding of series transformer IV, and former limit winding and the bus 1 of series transformer IV are in series.
The described REgulatable reactor system based on flux compensation is connected with capacitor, forms the fault current limiter that band string is mended.
The described REgulatable reactor system based on flux compensation is in parallel with capacitor, forms the adjustable series reactor of shunt capacitor.
The described REgulatable reactor system based on flux compensation is connected with reactor, forms controllable series compensator.
The described REgulatable reactor system based on flux compensation is connected with the reactor be in parallel, and forms from motion tracking arc-extinguishing system Regulatable reactor.
The Regulatable reactor series operation based on flux compensation described in two or more can be used.
The operation principle of the REgulatable reactor system based on flux compensation described in the utility model is:
When electric power system normally works, obtain current signal i by current detecting and processing unit I
iS; By acquired current signal i
iSdeliver in control unit II, the control signal F that control unit II exports
1deliver to inverter unit III, inverter unit III output current i
i* deliver in the vice-side winding ax of series transformer IV, control unit II makes i
i* i is followed the tracks of
iS, and make W
aX* i
i+ W
aX*i
i*=0, W
aXfor magnetomotive force, i
ifor electric current in the winding of former limit, thus make the main flux Φ m=0 in series transformer IV iron core, be connected on the transformer primary side winding pressure drop U in electrical network bus
aX≈ 0.Now, series transformer IV on operation of power networks without impact.
When electric power system is broken down, and when fault current reaches set-point, current detecting and processing unit I output current signal i
fcto in control unit II, control unit II exports control signal Fo immediately, turns off the inverter in inverter unit III, makes the output current of inverter unit III be zero, even if i
i*=0, series transformer vice-side winding is opened a way, and the excitation impedance Zm of former limit winding seals in electrical network bus, immediately by fault current limitation in set point.If desired, can from the main control unit command end input instruction F of control unit II
i1(or F
i0), then control unit II outputs signal F
1(or F
0), thus series transformer IVAX port presents approximate zero impedance (or high impedance Zm).
REgulatable reactor system based on flux compensation described in the utility model compared with prior art has following advantage:
1, Regulatable reactor described in the utility model is based on flux compensation principle, and by controlling, magnetic flux can change to maximum from zero, and the AX terminal impedance of corresponding series transformer IV is from approximate zero impedance variation to excitation impedance, and response speed is very fast;
2, the utility model adopts series transformer high pressure (former limit winding) and control system (vice-side winding) to be kept apart, make control system can adopt withstand voltage lower components and parts, thus make Control system architecture simple, safe and reliable., can not also have a power failure and change control board plug-in unit;
3, the utility model can adopt hybrid power electronic device, loss ratio prior art much lower in the controls, without the need to separately joining dedicated cooling system;
4, due to above advantage, the utility model is more much lower than prior art in price.
Accompanying drawing explanation
Fig. 1 is the REgulatable reactor system theory diagram based on flux compensation;
Fig. 2 is the fault current limiter principle schematic that band string is mended;
Fig. 3 is controlled and series capacitance compensator schematic diagram;
Fig. 4 is the adjustable series reactor schematic diagram of connection in series-parallel capacitor;
Fig. 5 is adjustable connection in series-parallel reactor schematic diagram;
Fig. 6 is auto-tracing arc-eliminating coil Regulatable reactor schematic diagram;
Fig. 7 is two Regulatable reactor series operation example schematic diagrames.
Embodiment
Below in conjunction with accompanying drawing, the REgulatable reactor system based on flux compensation described in the utility model and principle are described in further detail.
Previous technique form described in work condition state be in series transformer IV AX end impedance equal zero and equal two extreme cases of maximum Zm.Z is transferred to when needing the reactance value by series transformer AX port
l, (0 < Z
l< Zm) time, corresponding master signal instruction F can be inputted in control unit II
i1, control unit II is according to master control instruction F
i1with the current signal i from current detecting and processing unit I
iS, export control signal Fm to inverter unit III, make inverter unit III output current i
i*, from motion tracking i
iS, and make composite magnetic power (W
aX* i
i+ W
aX*i
i*, W
aXfor magnetomotive force, i
ifor electric current in the winding of former limit) produce main flux Φ in the core which
m, thus the former limit winding pressure drop being connected on the series transformer IV in electrical network bus is U
aX, in the winding of former limit, electric current is i
i, AX port presents reactance Z
l*, Z is worked as
l* with given reactance value Z
lwhen error exceedes set-point, control unit II can be revised automatically, its reactance value Z
lconsecutive variations between zero to maximum Zm, to be suitable for the needs of the operating modes such as controllable silicon string benefit.
Adopt the system configurations that the REgulatable reactor system based on flux compensation described in the utility model can be constructed as follows::
The fault current limiter (as shown in Figure 2) that band string is mended; Controllable series compensator (as shown in Figure 4, Figure 5); The adjustable series reactor (as shown in Figure 3) of shunt capacitor; Adjustable shunt reactor (as shown in Figure 4); From motion tracking arc-extinguishing system Regulatable reactor (as shown in Figure 6).
In addition, the Regulatable reactor based on flux compensation described in the utility model can by two or more reactor series operation (as shown in Figure 7).
Controllable impedance symbol L in Fig. 2 to Fig. 7 represents the Regulatable reactor based on flux compensation in Fig. 1.Symbol 4 in Fig. 6 represents the grounding transformer in automatic arc extinguishing system.
Claims (6)
1. based on the REgulatable reactor system of flux compensation, be made up of current detecting and processing unit I, control unit II, inverter unit III, series transformer IV 4 unit, it is characterized in that, current detecting and processing unit I are made up of electrical network bus, current transformer and current signal processing links, current transformer is placed on electrical network bus, and the output of current transformer is connected with current signal processing links; 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 the vice-side winding of series transformer IV, and the former limit winding of series transformer IV and bus are in series.
2. the REgulatable reactor system based on flux compensation according to claim 1, is characterized in that, the described REgulatable reactor system based on flux compensation is connected with capacitor, forms the fault current limiter that band string is mended.
3. the REgulatable reactor system based on flux compensation according to claim 1, is characterized in that, the described REgulatable reactor system based on flux compensation is in parallel with capacitor, forms the adjustable series reactor of shunt capacitor.
4. the REgulatable reactor system based on flux compensation according to claim 1, is characterized in that, the described REgulatable reactor system based on flux compensation is connected with reactor, forms controllable series compensator.
5. the REgulatable reactor system based on flux compensation according to claim 1, is characterized in that, the described REgulatable reactor system based on flux compensation is connected with the reactor be in parallel, and forms from motion tracking arc-extinguishing system Regulatable reactor.
6. the REgulatable reactor system based on flux compensation according to claim 1, is characterized in that, the described REgulatable reactor system based on flux compensation can be in series use between two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633925.5U CN204243749U (en) | 2014-10-29 | 2014-10-29 | Based on the REgulatable reactor system of flux compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633925.5U CN204243749U (en) | 2014-10-29 | 2014-10-29 | Based on the REgulatable reactor system of flux compensation |
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| Publication Number | Publication Date |
|---|---|
| CN204243749U true CN204243749U (en) | 2015-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-10-29 CN CN201420633925.5U patent/CN204243749U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |