CN102624102A - Power supplying circuit and power supplying method for chain-type SVG (static var generator) modules - Google Patents
Power supplying circuit and power supplying method for chain-type SVG (static var generator) modules Download PDFInfo
- Publication number
- CN102624102A CN102624102A CN2012101050070A CN201210105007A CN102624102A CN 102624102 A CN102624102 A CN 102624102A CN 2012101050070 A CN2012101050070 A CN 2012101050070A CN 201210105007 A CN201210105007 A CN 201210105007A CN 102624102 A CN102624102 A CN 102624102A
- Authority
- CN
- China
- Prior art keywords
- current
- power supply
- phase
- svg module
- power supplying
- 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.)
- Pending
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The invention relates to a power supplying circuit and a power supplying method for chain-type SVG (static var generator) modules. The power supplying circuit comprises a constant alternating-current control power supply and a plurality of current sensing receiving circuits, and each current sensing receiving circuit consists of a ferrite bead and a coil. An output terminal of the constant alternating-current control power supply is connected with a high-voltage cable, and the high-voltage cable is penetratingly arranged in the ferrite beads of the current sensing receiving circuits to connect the ferrite beads in series structure. Each input terminal of the SVG modules is respectively connected with each output terminal of the current sensing receiving circuits, and the ferrite beads are located outside the SVG modules. The constant alternating-current control power supply comprises a semi-controlled rectifier bridge, an inductor, a direct-current capacitor and a phase-shifting and voltage-regulating inverter bridge. Alternating-current utility power is rectified to direct-current voltage containing ripple components through the semi-controlled rectifier bridge, and current surge is reduced via the inductor, the ripple components in the direct-current voltage are restrained by the direct-current capacitor parallelly connected between two output terminals of the semi-controlled rectifier bridge, and then the alternating-current utility power is inputted into the phase-shifting and voltage-regulating inverter bridge. The power supplying circuit and the power supplying method for the chain-type SVG (static var generator) modules can be widely applied to the field of high-voltage reactive power compensation.
Description
Technical field
The present invention relates to a kind of high voltage supply method and power supply circuits thereof, particularly about a kind of power supply circuits and method of supplying power to thereof that can be used for 35KV direct screening chain type SVG (static reacance generator) module.
Background technology
At present, in the high-pressure reactive compensation field, SVG (static reacance generator) development just like a raging fire, various technology reach its maturity, and increasing practical applications case is arranged.Domestic SVG is main with chain type, and the common direct screening electrical network of the SVG of 6KV, 10KV, 35KV more are the mode that adopts transformer to boost at present.Chain type SVG is made up of some unit modules; Each unit module is a single-phase electricity die mould inverter; Mainly form by H type fully controlled bridge, dc capacitor and a control circuit board; The conducting of control circuit board through the IGBT of optical fiber and Master Communications control H type fully controlled bridge with end, and the fastest fault such as protects on the spot at function.High voltage isolating transformer is normally adopted in the power supply of control circuit board; 10KV such as mains-supplied isolates 220/220 type, because the unit module space is limited, isolating transformer must accomplish as far as possible that volume is little; Therefore isolating transformer manufacturer all takes to add the method for insulating material; But can cause following problem like this: 1, because the transformer detection is destructive testing, cause isolating transformer ex factory pass rate, verification and measurement ratio not high, percent defective is but very high.2, insulating material generates very big parasitic capacitance, possibly cause serious disturbance, is one of unsettled maximum hidden danger in the present engineering of SVG.3, the isolating transformer inlet wire of each unit module all is parallel connection, and wiring is comparatively complicated.4, a whole set of SVG needs the dozens of isolating transformer, and cost is higher.5, for the 35KV direct screening, this mode need be isolated 35KV, and then volume is bigger, and feasibility is extremely low.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of the easy for installation of chain type SVG module that be used for, cost is low, and not tape insulation hidden danger and the method for supplying power to and the power supply circuits thereof that disturb hidden danger.
For realizing above-mentioned purpose; The present invention takes following technical scheme: a kind of power supply circuits that are used for chain type SVG module; It is characterized in that: it comprises interchange constant current control power supply, some induction by current receiving circuits and high-tension cable, and each said induction by current is accepted circuit and constituted by ferrite bead and the coil that is wrapped on this ferrite bead; Said interchange constant current control power supply output connects said high-tension cable, and said high-tension cable is located in each said induction by current and accepts in the ferrite bead of circuit, and each said ferrite bead constitutes cascaded structure; The input of each said SVG module connects each said induction by current receiving circuit output respectively, and each said induction by current receiving circuit is built in respectively in each said SVG module, and said ferrite bead is positioned at the outside of said SVG module; Said interchange constant current control power supply comprises half control rectifier bridge, inductance, dc capacitor and phase-shift voltage regulating inverter bridge; Electric main is rectified into the direct voltage that contains ripple component through said half control rectifier bridge; After said inductance reduces rush of current; Said dc capacitor by being connected in parallel between said half control rectifier bridge two outputs suppresses the ripple component in the direct voltage; Import in the said phase-shift voltage regulating inverter bridge, by the big or small direct voltage that can regulate of said phase-shift voltage regulating inverter bridge output.
The external ring set of the output of said phase-shift voltage regulating inverter bridge is useful on the current sensor that detects its output current value.
Said current sensor adopts Hall current sensor.
Said phase-shift voltage regulating inverter bridge is made up of four full-control type IGBT or MOSFET.
Said half control rectifier bridge is made up of two diodes and two controllable silicons.
A kind of method of supplying power to that is used for chain type SVG module of realizing above-mentioned power supply circuits; Its step is following: said interchange constant current control power supply is through the electric current of said high-tension cable output alternation; Be coupled through magnetic circuit; Sense the coil on the said ferrite bead, generate electromotive force, this electromotive force is the input power supply of each said SVG module.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention constitutes owing to adopting by exchanging constant current controllable power and several induction by current receiving circuits; Each induction by current receiving circuit constitutes by ferrite bead and the coil that is wrapped on this ferrite bead; Exchange constant current controllable electric power output and connect high-tension cable; High-tension cable is located in each ferrite bead, constitute the induction by current receiving circuit of cascaded structure, and each current receiving circuit is built in respectively in each SVG module.Even single like this SVG module for power supply short circuit or open circuit can not influence the power supply of other SVG modules, and easy construction, on-the-spot needs that high-tension cable is passed each ferrite bead and gets final product.2, the present invention is because the high-voltage cable insulating technology that adopts is very ripe, and therefore insulation of the present invention is fully feasible.3, therefore the present invention can not form the SVG module and disturb owing to there is not parasitic capacitance.4, the present invention is because the interchange constant current control power supply that adopts has inside and outside two closed loops, and it controls convenient, adjustable wide ranges.5, the present invention makes simply, and cost is low, and overall cost is well below the cost of dozens of isolating transformer.Therefore, the present invention can be widely used in the high-pressure reactive compensation field.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention;
Fig. 2 is an interchange constant-current supply control circuit sketch map of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 1; The present invention provides a kind of power supply circuits that are used for chain type SVG (static reacance generator) module to adopt the mode of series connection; It comprises interchange constant current control power supply 10, some induction by current receiving circuits 20 and high-tension cable 30, and each induction by current is accepted circuit 20 and constituted by ferrite bead 21 and the coil 22 that is wrapped on this ferrite bead 21.The output that exchanges constant current control power supply 10 connects high-tension cable 30, and high-tension cable 30 is located in each induction by current and accepts in the ferrite bead 21 of circuit 20, makes each ferrite bead 21 constitute cascaded structure.Wherein, the input of each SVG module connects the output of each induction by current receiving circuit 20 respectively, is about to each induction by current receiving circuit 20 and is built in respectively in each SVG module, and ferrite bead 21 is positioned at the outside of SVG module.Therefore, the induction by current receiving circuit 20 of each SVG module is connected, and what responded to is same alternating current.
In the foregoing description, power supply circuits of the present invention itself with high-tension electricity and the insulation between the civil power bear by high-tension cable 30 because prior art medium and high voltage cable 30 insulating processes are very ripe, therefore insulation of the present invention is fully feasible.
As shown in Figure 2, interchange constant current control power supply 10 of the present invention comprises half control rectifier bridge 11, inductance 12, dc capacitor 13 and phase-shift voltage regulating inverter bridge 14.Electric main reduces rush of current in the input inductance 12 after being rectified into the direct voltage that contains ripple component through half control rectifier bridge 11, and by the ripple component in the dc capacitor 13 inhibition direct voltages that are connected in parallel between 11 liang of outputs of half control rectifier bridge.In the direct voltage input phase-shift voltage regulating inverter bridge 14 after the inhibition ripple component, by the direct voltage of phase-shift voltage regulating inverter bridge 14 output adjustable size.
Wherein, current sensor 15 is arranged, be used to detect the current value size of phase-shift voltage regulating inverter bridge 14 outputs at the external ring set of the output of phase-shift voltage regulating inverter bridge 14.Current sensor 15 of the present invention adopts Hall current sensor.
In the foregoing description, half control rectifier bridge 11 is made up of two diodes 111 and two controllable silicons 112, and the magnitude of voltage that electric main is exported behind half control rectifier bridge 11, inductance 12 and dc capacitor 13 is by the conducting angle decision of two controllable silicons 12.
In the foregoing description; Phase-shift voltage regulating inverter bridge 14 is made up of four full-control type IGBT 141; Through regulating the phase difference of IGBT 141 in two brachium pontis, generate the output voltage of different sizes, because 30 bringing onto loads of high-tension cable of output can be regarded as an inductance series resistance; Then its output current is the continuous current of pulsation, and its frequency is by the switching frequency decision of IGBT 141.Can realize adjusting to phase-shift voltage regulating inverter bridge 14 output voltage values size.Wherein, under current power was not very big situation, four full-control type IGBT 141 in the phase-shift voltage regulating inverter bridge 14 can also adopt the MOSFET pipe to replace.
Among above-mentioned each embodiment, exchange constant current control power supply 10 and have inside and outside two closed loops, to guarantee the enough and basic constant current (as shown in Figure 2, dotted line is inside and outside two closed loops among the figure) of institute's output current power.In ring be by the drive circuit of IGBT 141 in measured current closed-loop to the phase-shift voltage regulating inverter bridge 14 of current sensor 15, change the phase shift phase place, the characteristics of interior ring are that frequency is high, speed is fast; Outer shroud is the drive circuit by controllable silicons 112 in measured current closed-loop to the half control rectifier bridge 11 of current sensor 15, changes the conducting angle of controllable silicon 112.For example, when the detection electric current is big inadequately, at first increase the phase difference of IGBT 141, maximum to 180 degree, if to 180 degree, electric current is still not enough, reduces the angle of controllable silicon 112 again, promptly improves the voltage of dc capacitor 13, can be to 0 degree.Therefore, inside and outside two closed loops can guarantee enough wide electric current output adjustable range.
Among above-mentioned each embodiment, if the electric capacity in the induction by current receiving circuit 20 that high-tension cable 30 connects is more for a long time, can be at inductance of output series connection of phase-shift voltage regulating inverter bridge 14.
The method of supplying power to that the present invention is based on the power supply circuits that are used for chain type SVG is following:
Exchange the electric current of constant current control power supply 10,, sense the coil 22 on the ferrite bead 21 through the magnetic circuit coupling through high-tension cable 30 output alternations; Generate electromotive force, this electromotive force is the input power supply of each SVG module, and mainly by current amplitude, power frequency, the decision of the magnet ring number of turn: electric current is big more; The electromotive force that then induces is strong more; Therefore, for improving current amplitude, the voltage of input is unsuitable too high; Power frequency is high more, and the electromotive force of induction is strong more, therefore needs to improve the frequency of electric current alternation; And it is high more good more; If overall power is not very big, can select the MOSFET pipe in the phase-shift voltage regulating inverter bridge 14 for use, frequency can be more than 10K; If phase-shift voltage regulating inverter bridge 14 is made up of IGBT, its frequency is not less than 5K; The magnet ring number of turn is many more, and the electromotive force of induction is also strong more.
Above-mentioned each embodiment only is used to explain the present invention; The connection of each parts and structure all can change to some extent; On the basis of technical scheme of the present invention, all improvement and equivalents of the connection and the structure of individual component being carried out according to the principle of the invention all should not got rid of in protection of the present invention.
Claims (7)
1. power supply circuits that are used for chain type SVG module; It is characterized in that: it comprises interchange constant current control power supply, some induction by current receiving circuits and high-tension cable, and each said induction by current is accepted circuit and constituted by ferrite bead and the coil that is wrapped on this ferrite bead; Said interchange constant current control power supply output connects said high-tension cable, and said high-tension cable is located in each said induction by current and accepts in the ferrite bead of circuit, and each said ferrite bead constitutes cascaded structure; The input of each said SVG module connects each said induction by current receiving circuit output respectively, and each said induction by current receiving circuit is built in respectively in each said SVG module, and said ferrite bead is positioned at the outside of said SVG module;
Said interchange constant current control power supply comprises half control rectifier bridge, inductance, dc capacitor and phase-shift voltage regulating inverter bridge; Electric main is rectified into the direct voltage that contains ripple component through said half control rectifier bridge; After said inductance reduces rush of current; Said dc capacitor by being connected in parallel between said half control rectifier bridge two outputs suppresses the ripple component in the direct voltage; Import in the said phase-shift voltage regulating inverter bridge, by the big or small direct voltage that can regulate of said phase-shift voltage regulating inverter bridge output.
2. a kind of power supply circuits that are used for chain type SVG module as claimed in claim 1 is characterized in that: the external ring set of the output of said phase-shift voltage regulating inverter bridge is useful on the current sensor that detects its output current value.
3. a kind of power supply circuits that are used for chain type SVG module as claimed in claim 2 is characterized in that: said current sensor adopts Hall current sensor.
4. like claim 1 or 2 or 3 described a kind of power supply circuits that are used for chain type SVG module, it is characterized in that: said phase-shift voltage regulating inverter bridge is made up of four full-control type IGBT or MOSFET.
5. like claim 1 or 2 or 3 described a kind of power supply circuits that are used for chain type SVG module, it is characterized in that: said half control rectifier bridge is made up of two diodes and two controllable silicons.
6. a kind of power supply circuits that are used for chain type SVG module as claimed in claim 4 is characterized in that: said half control rectifier bridge is made up of two diodes and two controllable silicons.
7. the method for supplying power to that is used for chain type SVG module of realization such as any said power supply circuits of claim 1～6; Its step is following: said interchange constant current control power supply is through the electric current of said high-tension cable output alternation; Be coupled through magnetic circuit; Sense the coil on the said ferrite bead, generate electromotive force, this electromotive force is the input power supply of each said SVG module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101050070A CN102624102A (en) | 2012-04-11 | 2012-04-11 | Power supplying circuit and power supplying method for chain-type SVG (static var generator) modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101050070A CN102624102A (en) | 2012-04-11 | 2012-04-11 | Power supplying circuit and power supplying method for chain-type SVG (static var generator) modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102624102A true CN102624102A (en) | 2012-08-01 |
Family
ID=46563837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101050070A Pending CN102624102A (en) | 2012-04-11 | 2012-04-11 | Power supplying circuit and power supplying method for chain-type SVG (static var generator) modules |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102624102A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931664A (en) * | 2012-10-26 | 2013-02-13 | 株洲变流技术国家工程研究中心有限公司 | Chain type SVG (static var generator) device low-pressure power supply system |
| CN104467397A (en) * | 2012-12-13 | 2015-03-25 | 吴小再 | Working method of chain type SVG device suitable for correcting power factor |
| CN110690734A (en) * | 2019-10-15 | 2020-01-14 | 艾铂科技(湖北)有限公司 | High-voltage sensor induction power supply |
| CN111902727A (en) * | 2018-03-26 | 2020-11-06 | 李铉昌 | High-voltage power line path detection device and method with improved stability |
| CN112003578A (en) * | 2020-08-28 | 2020-11-27 | 东展科博(北京)技术有限公司 | Portable interference isolation shielding filtering system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618363Y (en) * | 2003-03-20 | 2004-05-26 | 浙江佳环电子有限公司 | Streamer desulfurization and denitration power supply |
| CN101662214A (en) * | 2009-09-22 | 2010-03-03 | 浙江大学 | High voltage isolating switch power and a plurality of output isolated switch power systems |
| CN102231591A (en) * | 2011-07-13 | 2011-11-02 | 武汉武新电气科技有限公司 | Distribution network working power supply based on self-energy-gaining coil technology |
| CN202495811U (en) * | 2012-04-11 | 2012-10-17 | 东展科博(北京)电气有限公司 | Power supply circuit for chain-type SVG module |
-
2012
- 2012-04-11 CN CN2012101050070A patent/CN102624102A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618363Y (en) * | 2003-03-20 | 2004-05-26 | 浙江佳环电子有限公司 | Streamer desulfurization and denitration power supply |
| CN101662214A (en) * | 2009-09-22 | 2010-03-03 | 浙江大学 | High voltage isolating switch power and a plurality of output isolated switch power systems |
| CN102231591A (en) * | 2011-07-13 | 2011-11-02 | 武汉武新电气科技有限公司 | Distribution network working power supply based on self-energy-gaining coil technology |
| CN202495811U (en) * | 2012-04-11 | 2012-10-17 | 东展科博(北京)电气有限公司 | Power supply circuit for chain-type SVG module |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931664A (en) * | 2012-10-26 | 2013-02-13 | 株洲变流技术国家工程研究中心有限公司 | Chain type SVG (static var generator) device low-pressure power supply system |
| CN102931664B (en) * | 2012-10-26 | 2015-07-22 | 株洲变流技术国家工程研究中心有限公司 | Chain type SVG (static var generator) device low-pressure power supply system |
| CN104467397A (en) * | 2012-12-13 | 2015-03-25 | 吴小再 | Working method of chain type SVG device suitable for correcting power factor |
| CN104467397B (en) * | 2012-12-13 | 2017-01-11 | 国网山东省电力公司蒙阴县供电公司 | Chain type SVG device suitable for correcting power factor and improving utilization rate of transformer |
| CN111902727A (en) * | 2018-03-26 | 2020-11-06 | 李铉昌 | High-voltage power line path detection device and method with improved stability |
| CN110690734A (en) * | 2019-10-15 | 2020-01-14 | 艾铂科技(湖北)有限公司 | High-voltage sensor induction power supply |
| CN112003578A (en) * | 2020-08-28 | 2020-11-27 | 东展科博(北京)技术有限公司 | Portable interference isolation shielding filtering system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Corasaniti et al. | Hybrid active filter for reactive and harmonics compensation in a distribution network | |
| CN105379093B (en) | The single-phase cycloconverter stored with integrated line circulating energy | |
| CN103078316B (en) | Network voltage disturbance generating device and control method thereof | |
| Luo et al. | A new converter transformer and a corresponding inductive filtering method for HVDC transmission system | |
| CN202634316U (en) | Energy taking device based on capacitive voltage divider | |
| CN103701150B (en) | A kind of multi-machine parallel connection circuit, electric power system and voltage adjusting method | |
| US20130301327A1 (en) | System and method of parallel converter current sharing | |
| CN103954866B (en) | A kind of hookup and its modulator approach of half-bridge structure voltage source converter | |
| US9391533B2 (en) | Power transmitting apparatus for digitally controlling voltage and current of alternating current signal | |
| AU2013257433B2 (en) | Power quality control | |
| Litrán et al. | Reference voltage optimization of a hybrid filter for nonlinear load compensation | |
| CN102624102A (en) | Power supplying circuit and power supplying method for chain-type SVG (static var generator) modules | |
| CN103197259B (en) | Photovoltaic DC-to-AC converter testing apparatus | |
| CN108957292A (en) | A kind of common type of power module testing circuit, system and test method | |
| CN102347707A (en) | Three-phase inverter control system and control method thereof | |
| CN103543305B (en) | Weak damping alternating-current high-voltage generator for partial discharge detection of power equipment | |
| CN202495811U (en) | Power supply circuit for chain-type SVG module | |
| TWI580144B (en) | Power quality compensation system | |
| Pokharel et al. | Modeling and simulation of three phase inverter for fault study of microgrids | |
| CN204613387U (en) | For the electric supply installation that current transformer detects | |
| CN102291025A (en) | Inverter system as well as method and device for controlling same | |
| Gawande et al. | Design Consideration for Configuration, Topology & Control Schemes of DSTATCOM Implemented on Distribution Systems | |
| Htita et al. | Nonlinear Loads Modelling and Harmonics Analysis: A Review | |
| CN201210664Y (en) | Intelligent physical current equalizing controller with excitation dual rectifying bridge | |
| Rekola et al. | Efficiency of converters and amorphous core AC-filters in an LVDC distribution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |