CN215267655U - Distribution network terminal low voltage regulation and control device - Google Patents
Distribution network terminal low voltage regulation and control device Download PDFInfo
- Publication number
- CN215267655U CN215267655U CN202121240161.XU CN202121240161U CN215267655U CN 215267655 U CN215267655 U CN 215267655U CN 202121240161 U CN202121240161 U CN 202121240161U CN 215267655 U CN215267655 U CN 215267655U
- Authority
- CN
- China
- Prior art keywords
- control
- voltage regulation
- primary side
- transformer
- voltage
- 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.)
- Active
Links
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The application is suitable for voltage regulation and control technical field, provides a join in marriage net terminal low-voltage regulation and control device, includes: controlling the transformer T; a primary side coil of the control transformer T is connected between the live wire and the zero wire through a controllable switch K1; the secondary side coil of the control transformer T is connected to the live wire. The distribution network terminal low voltage regulation and control device provided by the embodiment of the application utilizes series compensation to regulate voltage of a line, the device gets power from the line to be connected to the primary side of a control transformer, the primary side coil quantity input through the control of a controllable switch is set according to gears, switching of primary side taps of the control transformer is realized, the secondary side of the control transformer is connected in series back to a power transmission line and is superposed with the voltage of a power grid, and the voltage of the line is lifted.
Description
Technical Field
The application is suitable for the technical field of voltage regulation and control and provides a distribution network terminal low-voltage regulation and control device.
Background
A low voltage line may exhibit constant power, constant current, constant impedance, or a combination thereof, due to the fact that the voltage at the end of the line deviates significantly from the rated voltage, and the load characteristics change.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application provides a distribution network terminal low voltage regulation and control device, so as to solve the problem that the voltage at the terminal of the current low voltage line is too low.
The embodiment of the application provides a join in marriage net terminal low voltage regulation and control device, includes: controlling the transformer T; a primary side coil of the control transformer T is connected between the live wire and the zero wire through a controllable switch K1; and a secondary side coil of the control transformer T is connected to a live wire.
In some embodiments of the present application, at least one coil or group of coils of the primary side coil is connected between the live and neutral wires by a corresponding controllable switch K1.
In some embodiments of the present application, four or four of the primary side coils are connected between the live and neutral wires through corresponding controllable switches K1.
In some embodiments of the present application, the controllable switch K1 comprises an IGBT.
In some embodiments of the present application, the controllable switch K1 is composed of two IGBTs connected in series in the same direction.
In some embodiments of the present application, the distribution network terminal low voltage regulation device further includes: a bypass switch K2; the bypass switch K2 is used to control the switching on and off of the primary coil.
In some embodiments of the present application, the bypass switch K2 comprises an IGBT.
In some embodiments of the present application, the bypass switch K2 is composed of two IGBTs connected in series in reverse.
In some embodiments of the present application, the distribution network terminal low voltage regulation device further includes: a controller; the controller is used for controlling the on or off of each IGBT.
The distribution network terminal low voltage regulation and control device provided by the embodiment of the application utilizes series compensation to regulate voltage of a line, the device gets power from the line to be connected to the primary side of a control transformer, the primary side coil quantity input through the control of a controllable switch is set according to gears, switching of primary side taps of the control transformer is realized, the secondary side of the control transformer is connected in series back to a power transmission line and is superposed with the voltage of a power grid, and the voltage of the line is lifted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic circuit diagram of a distribution network terminal low-voltage regulation and control device provided in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
The embodiment of the application provides a distribution network terminal low-voltage regulation and control device, and as shown in fig. 1, the device comprises a control transformer T, a controllable switch K1 and a bypass switch K2.
The primary side coil of the control transformer T is connected between the live wire and the zero wire through a controllable switch K1, and the secondary side coil of the control transformer T is connected on the live wire. The bypass switch K2 is used to control the switching on and off of the primary winding.
In the distribution network terminal low voltage regulation and control device shown in fig. 1, each coil in the primary side coils is divided into four groups, and the four groups of coils are respectively connected between the live wire and the zero wire through corresponding controllable switches K1. The input or the exit of each group of coils can be controlled through a corresponding controllable switch K1, and the voltage is regulated in different gears.
In particular, the controllable switch K1 may be composed of two IGBTs connected in series in the same direction.
When the line voltage meets the requirement, the primary coil of the control transformer T may be turned off or shorted by the bypass switch K2, thereby exiting the voltage compensation mode. In order to realize the above function, the bypass switch K2 may be composed of two IGBTs connected in reverse series, and the two IGBTs connected in reverse series are connected to both ends of the primary side coil.
In practical application, a controller (not shown in fig. 1) can be additionally arranged in the low-voltage regulation and control device at the tail end of the distribution network, the controller can acquire the voltage of the input cable in real time, and the on/off of each IGBT can be controlled according to the real-time monitoring voltage value and the gear setting.
The distribution network terminal low voltage regulation and control device provided by the embodiment of the application utilizes series compensation to regulate voltage of a line, the device gets power from the line to be connected to the primary side of a control transformer, the primary side coil quantity input through the control of a controllable switch is set according to gears, switching of primary side taps of the control transformer is realized, the secondary side of the control transformer is connected in series back to a power transmission line and is superposed with the voltage of a power grid, and the voltage of the line is lifted.
Claims (1)
1. The utility model provides a join in marriage net terminal low voltage regulation and control device which characterized in that includes: controlling the transformer T; a bypass switch K2; a controller;
a primary side coil of the control transformer T is connected between the live wire and the zero wire through a controllable switch K1; the bypass switch K2 is used for controlling the switching on or off of the primary coil; the bypass switch K2 consists of two IGBTs connected in series in the reverse direction; four coils or four groups of coils in the primary side coils are respectively connected between the live wire and the zero wire through corresponding controllable switches K1; the controllable switch K1 consists of two IGBTs which are connected in series in the same direction; the controller is used for controlling the on-off of each IGBT;
and a secondary side coil of the control transformer T is connected to a live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121240161.XU CN215267655U (en) | 2021-06-04 | 2021-06-04 | Distribution network terminal low voltage regulation and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121240161.XU CN215267655U (en) | 2021-06-04 | 2021-06-04 | Distribution network terminal low voltage regulation and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215267655U true CN215267655U (en) | 2021-12-21 |
Family
ID=79476445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121240161.XU Active CN215267655U (en) | 2021-06-04 | 2021-06-04 | Distribution network terminal low voltage regulation and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215267655U (en) |
-
2021
- 2021-06-04 CN CN202121240161.XU patent/CN215267655U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105632727B (en) | Transformer on-load voltage regulation tap switch and on-load voltage regulation transformer | |
| DE112016004548T5 (en) | Power management using synchronous shared coupling | |
| EP2361435A1 (en) | Medium-/low-voltage transformer having tap changing, and method for the operation thereof | |
| CN215267655U (en) | Distribution network terminal low voltage regulation and control device | |
| CN101248705B (en) | Heating power supply device | |
| RU2741335C1 (en) | Control device for transformer under load | |
| CN111934324B (en) | Multifunctional power flow controller suitable for multi-channel double-loop | |
| RU2711587C1 (en) | Method of controlling transformer voltage under load and device for its implementation | |
| CN111338412A (en) | Alternating current voltage stabilizer and alternating current voltage stabilizing equipment | |
| EP2388236A1 (en) | Power supply with a first and a second supply | |
| CN112838792B (en) | Intelligent soft starting device | |
| CN201918904U (en) | Circuit capable of realizing different voltage outputs by aid of series-parallel-connection of transformer taps | |
| CN113611513A (en) | Phase modulation transformer with large phase shift angle | |
| CN113077978A (en) | Novel voltage-regulating phase-shifting transformer with high-capacity double-device height impedance and additional reactor | |
| CN109245126B (en) | Three-phase alternating current automatic voltage regulating device and regulating method | |
| RU2648280C1 (en) | Voltage control device | |
| CN111555330B (en) | Power electronic on-load tap-changer and control method thereof | |
| CN220232913U (en) | Adjustable impedance transformer | |
| RU2788078C1 (en) | Phase converter with adjustable power | |
| RU2733650C1 (en) | Alternating voltage booster controller | |
| CN209948676U (en) | Voltage regulating circuit and three-phase power supply circuit thereof | |
| CN217157910U (en) | Voltage-regulating tapping system of arcless on-load automatic voltage-regulating distribution transformer | |
| RU2748588C1 (en) | Device for controlling transformer voltage under load | |
| CN113963923B (en) | Multistage coarse-fine regulating transformer | |
| RU2052886C1 (en) | Induction set uvar "with stepped change-over of turns of winding under load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |