CN215911906U - 10kV line voltage regulator - Google Patents
10kV line voltage regulator Download PDFInfo
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- CN215911906U CN215911906U CN202120743071.6U CN202120743071U CN215911906U CN 215911906 U CN215911906 U CN 215911906U CN 202120743071 U CN202120743071 U CN 202120743071U CN 215911906 U CN215911906 U CN 215911906U
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- autotransformer
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
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Abstract
The utility model discloses a 10kV line voltage regulator, which mainly comprises an autotransformer, a series transformer, an on-load tap changer and a change-over switch; the autotransformer is connected in parallel in a 10kV line and is connected with the on-load voltage regulating switch; the output end of the autotransformer is connected with the input end of the series transformer through the change-over switch, and the autotransformer provides input voltage for the series transformer; the secondary coil of the series transformer is connected in series in a 10kV line. The utility model adopts the mode of connecting an autotransformer in parallel to carry out voltage regulation, greatly reduces the current passing through the on-load tap changer, improves the reliability of equipment operation, solves the problem of low reliability caused by large current flowing through the on-load tap changer, and simultaneously realizes the function of multi-gear bidirectional voltage regulation by adopting the change-over switch.
Description
Technical Field
The device relates to the technical field of electric power products, in particular to a 10kV line voltage regulator.
Background
Along with the development of social economy and the improvement of the living standard of people, the power consumption of each region is continuously increased, the daily load and the seasonal load change are large, the current situation that a 10kV line is long still exists in some regions, and the problem that the voltage of the 10kV line is high and low is caused. Because the 10kV line voltage regulator has large required capacity, the current passing through the line voltage regulating switch is large, the fault rate is high, the reliability of the 10kV line voltage regulator is low, and the 10kV line voltage regulator is not popularized and applied in a large quantity.
Disclosure of Invention
The utility model aims to provide a 10kV line voltage regulator to solve the problems in the background technology.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a10 kV line voltage regulator comprises a controller, a current transformer and a voltage detection point, and is characterized by further comprising an autotransformer, a series transformer, an on-load tap changer and a change-over switch; the autotransformer is connected in parallel in a 10kV line and is connected with the on-load voltage regulating switch; the output end of the autotransformer is connected with the input end of the series transformer through the change-over switch, and the autotransformer provides input voltage for the series transformer; and the secondary coil of the series transformer is connected in series in a 10kV line.
According to a preferred embodiment of the present invention, a coil voltage regulation tap of the autotransformer is connected to a corresponding gear of the on-load tap changer, and the output voltage of the autotransformer is changed by changing the transformation ratio of the autotransformer through the gear switching of the on-load tap changer.
According to a preferred embodiment of the present invention, the transfer switch is configured to convert the direction of the input voltage of the series transformer, so as to implement bidirectional voltage regulation.
According to a preferred embodiment of the present invention, each phase of the transfer switch includes two selection switches and a short-circuit switch, when the controller sends a control command to be switched, the short-circuit switch is first turned on, then the two selection switches perform selective switching, and after the switching is completed, the short-circuit switch is turned off.
According to a preferred embodiment of the present invention, the controller performs analysis and processing according to the current transformer and the current and voltage collected by the voltage detection point to send a voltage regulation instruction to the on-load tap changer or send a conversion instruction to the transfer switch, so as to complete voltage regulation.
Compared with the prior art, the utility model has the advantages that the multi-gear line voltage regulation function is realized, the voltage regulation is realized by connecting an autotransformer in parallel, the current passing through the on-load voltage regulation switch is greatly reduced, the reliability of the operation of equipment is improved, the problem of low reliability caused by large current flowing through the on-load voltage regulation switch is solved, and the bidirectional voltage regulation is realized.
Drawings
Fig. 1 is a schematic diagram of the structural principle of a 10kV line voltage regulator of the present invention.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The embodiments described below are merely intended to more clearly illustrate the technical solutions of the present invention, are selected embodiments of the present invention, not all embodiments, and thus the scope of the present invention is not limited thereto. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Referring to fig. 1, the utility model discloses a 10kV line voltage regulator, which comprises a controller, a current transformer, a voltage detection point (not marked in the figure), an autotransformer B1, a series transformer B2, an on-load tap changer K1, and a change-over switch K2; the autotransformer B1 is connected in parallel in a 10kV line, a coil voltage regulation tap of the autotransformer B1 is connected with a corresponding gear of the on-load voltage regulation switch K1, the on-load voltage regulation switch K1 is used for changing the gear to change the coil voltage regulation tap of the autotransformer B1, the transformation ratio of the autotransformer B1 is further changed, the output voltage of the autotransformer B1 is changed, and the autotransformer B1 provides input voltage for the series transformer B2; the secondary coil of the series transformer B2 is connected in series in a 10kV line.
The output end of the autotransformer B1 is connected with the input end of the series transformer B2 through a change-over switch K2, and the change-over switch K2 is used for changing the direction of the input voltage of the series transformer B2 to realize bidirectional voltage regulation; each phase of the change-over switch K2 comprises two selection switches Ka and Kb and a short-circuit switch Kc, when the controller sends a control command to be changed, the short-circuit switch Kc is firstly switched on, then the two selection switches Ka and Kb carry out selective switching, and after the change-over is completed, the short-circuit switch Kc is switched off.
The controller analyzes and processes the current and the voltage collected by the current transformer and the voltage detection point, sends a voltage regulating instruction to the on-load voltage regulating switch K1 or sends a conversion instruction to the conversion switch K2, and voltage regulation is completed.
Above-mentioned structure and the principle design of a 10kV circuit voltage regulator, through the mode with the parallelly connected autotransformer B1 of 10kV circuit, reduced the electric current through on-load tap changer K1 greatly, improved the reliability of equipment operation, adopt change over switch K2 simultaneously, realized two-way pressure regulating, increased the pressure regulating gear position number, can realize 17 grades of pressure regulating, if do not adopt change over switch K2, above-mentioned scheme can carry out one-way pressure regulating.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several changes and modifications may be made without departing from the technical principle of the present invention, and these changes and modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. A10 kV line voltage regulator comprises a controller, a current transformer and a voltage detection point, and is characterized by further comprising an autotransformer, a series transformer, an on-load tap changer and a change-over switch; the autotransformer is connected in parallel in a 10kV line and is connected with the on-load voltage regulating switch; the output end of the autotransformer is connected with the input end of the series transformer through the change-over switch, and the autotransformer provides input voltage for the series transformer; and the secondary coil of the series transformer is connected in series in a 10kV line.
2. The 10kV line voltage regulator according to claim 1, wherein a coil voltage regulating tap of the autotransformer is connected with a corresponding gear of the on-load tap changer, and the output voltage of the autotransformer is changed by changing the gear of the on-load tap changer.
3. The 10kV line voltage regulator of claim 1, wherein the transfer switch is configured to switch the direction of the input voltage of the series transformer to achieve bidirectional voltage regulation.
4. The 10kV line voltage regulator of claim 3, wherein each phase of the transfer switch comprises two selector switches and a short-circuit switch, when the controller sends a control command to be switched, the short-circuit switch is firstly switched on, then the two selector switches perform selective switching, and after the switching is completed, the short-circuit switch is switched off.
5. The 10kV line voltage regulator according to claim 1, wherein the controller analyzes and processes the current and the voltage collected by the current transformer and the voltage detection point, and sends a voltage regulating command to the on-load tap changer or sends a switching command to the transfer switch to complete voltage regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120743071.6U CN215911906U (en) | 2021-04-13 | 2021-04-13 | 10kV line voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120743071.6U CN215911906U (en) | 2021-04-13 | 2021-04-13 | 10kV line voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215911906U true CN215911906U (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120743071.6U Active CN215911906U (en) | 2021-04-13 | 2021-04-13 | 10kV line voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215911906U (en) |
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2021
- 2021-04-13 CN CN202120743071.6U patent/CN215911906U/en active Active
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