CN2234150Y - Phase split current controller for power transmission line - Google Patents
Phase split current controller for power transmission line Download PDFInfo
- Publication number
- CN2234150Y CN2234150Y CN 94236751 CN94236751U CN2234150Y CN 2234150 Y CN2234150 Y CN 2234150Y CN 94236751 CN94236751 CN 94236751 CN 94236751 U CN94236751 U CN 94236751U CN 2234150 Y CN2234150 Y CN 2234150Y
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- phase
- transmission line
- utility
- model
- current controller
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Abstract
The utility model relates to a phase splitting current controller used in outputting lines with unbalanced three-phase load, which is mainly composed of a cascaded coupling transformer, a servo motor, a phase sampling comparing and controlling device and an ambipolar magnetic brush post type phase shifting voltage regulator. The utility model has the characteristics of wide phase ranges and no harmonic wave injection. The device realizes the full automatic control of phase splitting current of electric networks, largely improves the destruction of the running stability of electric networks by transient unbalanced load and increases the ability of phase circuits for conveying electricity.
Description
The utility model relates to the phase-splitting flow controller of a kind of use on the unbalanced transmission line of threephase load.
The phase-splitting flow controller of the unbalanced transmission line of threephase load belongs to flexible ac transmission, keep the stabilization of power grids, it is energy-conservation to tap the latent power, and strengthens the modern technologies of transmittability, but how to realize that the control of electrical network phase-splitting trend remains the unsolved problem of electric power system so far.
The purpose of this utility model is that a kind of phase-shifting voltages of design is level and smooth, and phase shift range is wide, can lag behind and not have the full-automatic controller of electrical network phase-splitting trend that harmonic wave injects in advance again.
The utility model is achieved in that
A kind of transmission line phase-splitting flow controller relates to series coupled transformer T
2(A, B, C), servomotor MS (A, B, C), phase sample is control device relatively, it is characterized in that this controller also relates to bipolar carbon brush pillar phase-shift voltage regulating device T
1(A, B, C), coupling transformer T whenever is in series
2Primary side is connected to corresponding main line, and secondary side is connected to corresponding T
1Output, every phase T
1Input connect the in addition two-phase of low tension loop, T respectively
1Two carbon brush between relative position regulate by corresponding M S, the power supply instruction of each MS is provided respectively by phase sample comparison control device.
The utility model has the advantages that: owing to adopted the phase shift of bipolar carbon brush pillar voltage regulator, its phase shift range is wide, maximum phase shifting angle α≤180 °, leading or hysteresis phase shifting angle α/2≤pi/2, the phase-shifting voltages waveform is almost consistent with the electrical network sine, no harmonic wave injects electrical network, it is full-automatic that the control of electrical network phase-splitting trend is realized, its strain time is short, the size and the direction of phase-splitting adjustment flexibly, control trend, improvement destroys the power grid operation condition because of the transient state uncompensated load, improves circuitry phase transmission of electric energy power, keeps power grid operation.
Fig. 1 is a fundamental diagram of the present utility model.
Fig. 2 is the coupling transformer vectogram of shifting to of the present utility model.
Fig. 3 is an injection phase-shifting voltages vectogram of the present utility model.
Provide embodiment of the present utility model below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and Fig. 3, a kind of ultra-high-tension power transmission line phase-splitting flow controller is by the series coupled transformer T that is coupled on the ultra-high-tension power transmission line
2(A, B, C) is with T
2The bipolar carbon brush pillar phase-shift voltage regulating device T that (A, B, C) secondary side is connected
1(A, B, C), regulate the corresponding servomotor MS (A, B, C) of relative position between T1 (A, B, C) two carbon brush, provide the phase sample of power supply instruction relatively to control 1 and form respectively for this phase-splitting flow controller provides the transformer T of low-tension supply to MS (A, B, C).
Its operation principle is, be interfered at electrical network, cause voltage fluctuation, operation stability is destroyed, when power supply reactive power and reactive load power lose balance, compare control device 1 according to each mutually unbalance degree by phase sample, send instruction to servomotor MS (A, B, C) selectively, change T fast
1Relative position between two carbon brush puts on one of corresponding T2 secondary side and line voltage distribution
nThe phase-shifting voltages Δ of perpendicular leading or hysteresis makes T
2The size of the phase angle [alpha] between primary side input terminal voltage and the output end voltage changes, and injects leading or lag behind a conversion reactive power dQ mutually to this, makes this phase reactive power reach balance, keeps stable operation.
It is pointed out that when this flow controller works on the low-voltage circuit its power supply can directly be provided by this low-voltage circuit, and transformer T need not be set.
Claims (1)
1, a kind of transmission line phase-splitting flow controller relates to series coupled transformer T
2(A, B, C), servomotor MS (A, B, C), phase sample is control device (1) relatively, it is characterized in that this controller also relates to bipolar carbon brush pillar phase-shift voltage regulating device T
1(A, B, C), coupling transformer T whenever is in series
2Primary side is connected to corresponding main line, and secondary side is connected to corresponding T
1Output, every phase T
1Two inputs connect the in addition two-phase of low tension loop, T respectively
1Two carbon plays between relative position regulate by corresponding M S, the power supply instruction of each MS by phase sample relatively control device (1) provide respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236751 CN2234150Y (en) | 1994-06-29 | 1994-06-29 | Phase split current controller for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236751 CN2234150Y (en) | 1994-06-29 | 1994-06-29 | Phase split current controller for power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2234150Y true CN2234150Y (en) | 1996-08-28 |
Family
ID=33844639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94236751 Expired - Fee Related CN2234150Y (en) | 1994-06-29 | 1994-06-29 | Phase split current controller for power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2234150Y (en) |
-
1994
- 1994-06-29 CN CN 94236751 patent/CN2234150Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |