CN201946971U - Magnetizing inrush current suppression circuit in single-phase transformer - Google Patents
Magnetizing inrush current suppression circuit in single-phase transformer Download PDFInfo
- Publication number
- CN201946971U CN201946971U CN2011200138920U CN201120013892U CN201946971U CN 201946971 U CN201946971 U CN 201946971U CN 2011200138920 U CN2011200138920 U CN 2011200138920U CN 201120013892 U CN201120013892 U CN 201120013892U CN 201946971 U CN201946971 U CN 201946971U
- Authority
- CN
- China
- Prior art keywords
- inrush current
- suppression circuit
- magnetizing inrush
- phase transformer
- transformer
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses a magnetizing inrush current suppression circuit in a single-phase transformer, and belongs to the technical field of an electric engineering technology. The suppression circuit comprises a single-phase rectifier bridge composed of four diodes and a direct current inductor which is connected to a direct current side of the rectifier bridge, and the whole suppression circuit is connected in series to a primary side of the single-phase transformer. A magnetizing inrush current of the single-phase transformer with a high capacity or a medium capacity can be suppressed effectively by the designed suppression circuit, due to a fact that a hardware circuit method is adopted in the magnetizing inrush current suppression circuit which is simple in structure, low in cost, and can improve stability of a system.
Description
Technical field
The utility model relates to a kind of single-phase transformer inhibition circuit that shoves, and in can effectively suppressing, the magnetizing inrush current of jumbo single-phase transformer, belongs to the technical field of electrical engineering technology.
Background technology
The size and Orientation of the core material of transformer, magnetic structure, original remanent magnetism, idle-loaded switching-on initial phase angle and supply voltage amplitude, system equivalent internal impedance size etc. are all multifactor, all have influence on the magnetizing inrush current size of transformer.In actual applications, above-mentioned factor can not be eliminated, so magnetizing inrush current is prevalent in electric power system, and the frequency that magnetizing inrush current occurs is higher.The harmful effect of magnetizing inrush current mainly contains: 1) the big and magnetizing inrush current that contain a large amount of high order harmonic components of peak value causes the very big vibration of iron core, jeopardizes the mechanical strength of iron core associated components, and causes very big noise; Be easy to make the relaying protection tripping operation when 2) magnetizing inrush current is big, can cause the transformer internal overvoltage and disconnect so big shoving suddenly; 3) higher level or paired running transformer are flow through in shoving that the air-drop transformer produces, and make their protective relaying maloperation easily.
Summary of the invention
At the above-mentioned technical problem that exists in the prior art, the purpose of this utility model is to adopt the method for hardware circuit, provides a kind of single-phase transformer to suppress circuit, can suppress the magnetizing inrush current of transformer.
In order to realize the foregoing invention purpose, the technical solution of the utility model is:
A kind of Inrush Current of Transformer suppresses circuit, comprises single-phase rectification bridge and the dc inductance be made up of four diodes, and dc inductance is connected the DC side of rectifier bridge; Described inhibition circuit is serially connected in the primary side of single-phase transformer.
During inhibition circuit of the present utility model can effectively suppress, the magnetizing inrush current of jumbo single-phase transformer, and simple in structure, cost is low, can improve the stability of system.
Description of drawings
Fig. 1 is the circuit diagram that the utility model Inrush Current of Transformer suppresses circuit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details.
As shown in Figure 1, adopt four diode D1, D2, D3, D4 to form single-phase rectification bridge, a dc inductance L1 is set in the DC side of rectifier bridge.Before transformer T1 dropped into, electric current was zero in the inductance L 1, after transformer T1 drops into, and the increase of must starting from scratch of the electric current in the inductance L 1, inductive current can not suddenly change, and makes the magnetizing inrush current of transformer T1 be subjected to the inhibition of inductance L 1 like this.Because inductance L 1 is positioned at the DC side of rectification bridge circuit, under the effect of direct voltage, electric current continues to increase in the inductance L 1, reach the load current maximum after, enter steady-working state.Ignore the on-state voltage drop of diode D1-D4 and the loss of inductance L 1, the magnetizing inrush current that diode D1-D4 and inductance L 1 are formed suppresses the circuit two ends is not had pressure drop, and system is had no adverse effects.
Claims (1)
1. an Inrush Current of Transformer suppresses circuit, comprises single-phase rectification bridge and the dc inductance (L1) be made up of four diodes, and it is characterized in that: dc inductance (L1) is connected the DC side of rectifier bridge; Described inhibition circuit is serially connected in the primary side of single-phase transformer (T1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200138920U CN201946971U (en) | 2011-01-18 | 2011-01-18 | Magnetizing inrush current suppression circuit in single-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200138920U CN201946971U (en) | 2011-01-18 | 2011-01-18 | Magnetizing inrush current suppression circuit in single-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946971U true CN201946971U (en) | 2011-08-24 |
Family
ID=44474307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200138920U Expired - Fee Related CN201946971U (en) | 2011-01-18 | 2011-01-18 | Magnetizing inrush current suppression circuit in single-phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779596A (en) * | 2015-04-20 | 2015-07-15 | 国家电网公司 | Direct-current reactor type magnetizing inrush current suppressor |
| CN109599837A (en) * | 2019-01-08 | 2019-04-09 | 同济大学 | A kind of voltage compensation type transformer excitation flow inhibition device |
-
2011
- 2011-01-18 CN CN2011200138920U patent/CN201946971U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779596A (en) * | 2015-04-20 | 2015-07-15 | 国家电网公司 | Direct-current reactor type magnetizing inrush current suppressor |
| CN109599837A (en) * | 2019-01-08 | 2019-04-09 | 同济大学 | A kind of voltage compensation type transformer excitation flow inhibition device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204517680U (en) | A kind of interchange inputs doubleway output DC-stabilized circuit | |
| CN103596348A (en) | Low-frequency oscillation suppression outer loop of plasma Hall effect thruster | |
| TW201815042A (en) | Power conversion device | |
| CN102931824A (en) | Common-mode lightning strike suppression circuit of power supply | |
| CN201946971U (en) | Magnetizing inrush current suppression circuit in single-phase transformer | |
| CN201918719U (en) | Exciting-surge-inhibiting circuit for three-phase transformers | |
| Tseng et al. | Capacitor energising transient limiter for mitigating capacitor switch-on transients | |
| CN102244469A (en) | Switching power supply capable of suppressing current harmonic waves | |
| WO2014047558A1 (en) | Surge blocking inductor | |
| CN204424886U (en) | A kind of three phase excitation incoming current suppression device | |
| CN203933483U (en) | Have the novel electric power transformer control system of D.C. magnetic biasing and no-power compensation function concurrently | |
| CN102881412A (en) | Energy-generation transformer | |
| CN207184032U (en) | Residual current action breaker dropout execution circuit | |
| CN202424147U (en) | Intelligent short circuit current limiter | |
| CN201450453U (en) | Phase-controlled power supply circuit and direct current motor using same | |
| US9583255B2 (en) | Surge blocking inductor | |
| CN202444266U (en) | Low-voltage side filtering compensation energy-saving type rectifier transformer | |
| CN216356782U (en) | Outdoor AC input high-power switch | |
| CN216649234U (en) | Device for restraining forward and reverse transformation overvoltage of distribution transformer | |
| CN210677285U (en) | Special welding machine major loop of generator | |
| CN208400691U (en) | A kind of transformer stabilized voltage power economizer | |
| CN102420422A (en) | Intelligent short-circuit current limiter | |
| CN101752850A (en) | Short trouble current limiter | |
| CN205051336U (en) | Grounding transformer | |
| CN104779596A (en) | Direct-current reactor type magnetizing inrush current suppressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20140118 |