CN216848004U - Power supply system for partial discharge test system - Google Patents
Power supply system for partial discharge test system Download PDFInfo
- Publication number
- CN216848004U CN216848004U CN202123020332.0U CN202123020332U CN216848004U CN 216848004 U CN216848004 U CN 216848004U CN 202123020332 U CN202123020332 U CN 202123020332U CN 216848004 U CN216848004 U CN 216848004U
- Authority
- CN
- China
- Prior art keywords
- motor
- generator
- partial discharge
- discharge test
- power supply
- 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
- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to a partial discharge test power technical field discloses a power system for partial discharge test system, including motor, generator, converter, the output shaft of motor passes through insulating coupling joint with the pivot of generator, the wiring end of motor connects the converter, the converter is connected with power supply, the output wiring end of generator connects partial discharge test system; the frequency converter can control the running speed of the motor to reach the rated speed of the generator. The utility model discloses with low costs, the power that sends is stable.
Description
Technical Field
The utility model belongs to the technical field of partial discharge test power technique and specifically relates to a power supply system for partial discharge test system.
Background
When a discharge test is performed, if the power supply system connected to the test object has harmonic voltage, voltage fluctuation and the like, the test result is affected. Particularly for direct current capacitors and super capacitors, the partial discharge amount of the capacitor is very small, so that the measurement is difficult. If the test power supply is not pure enough, the partial discharge signal of the capacitor is doped with excessive power supply system background impurities, which will cause significant influence on the test result of the capacitor. Although the existing technology can purify the polluted power supply to a certain extent, the cost is high, or the requirement of partial discharge test cannot be met after treatment.
Disclosure of Invention
The utility model provides a power supply system for partial discharge test system has solved the problem that the purification power is with high costs among the conventional art.
The utility model adopts the following technical scheme: a power supply system for a partial discharge test system comprises a motor, a generator and a frequency converter, wherein an output shaft of the motor is connected with a rotating shaft of the generator through an insulating coupler, a wiring terminal of the motor is connected with the frequency converter, the frequency converter is connected with a power supply source, and an output wiring terminal of the generator is connected with the partial discharge test system;
the frequency converter can control the running speed of the motor to reach the rated speed of the generator.
Furthermore, a pulse encoder is arranged on an output shaft of the motor and is in communication connection with the frequency converter;
the pulse encoder can output a pulse signal according to the real-time running rotating speed of the motor;
the frequency converter can adjust the running rotating speed of the motor according to the pulse signal so as to reach the rated rotating speed of the generator.
Further, the generator and the motor are arranged on a base, and the base is arranged on the ground.
Furthermore, a control cabinet is arranged on the base, and the frequency converter is arranged in the control cabinet.
Furthermore, the output end of the generator is provided with a junction box, and a wiring terminal is arranged in the junction box and used for wiring the partial discharge test system.
Further, the generator comprises a synchronous generator.
Further, the motor comprises a three-phase asynchronous motor.
The utility model has the advantages that: the utility model discloses a converter control motor rotational speed, the motor passes through the insulation coupling to be connected with the generator, drives the generator and works under rated revolution to produce rated current, owing to adopt the insulation coupling, the generator is kept apart with motor electrical, and the motor is not connected with the test system electricity simultaneously, has guaranteed the pureness of test system power, and this electrical power generating system is with low costs, and the power that sends is stable.
Drawings
Fig. 1 is a schematic structural diagram of the power supply system of the present invention.
Fig. 2 is a schematic block diagram of the power supply system of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
In an embodiment of the present invention, fig. 1 is a schematic diagram provided according to the structure of the present invention. As shown in fig. 1, the power supply system comprises a motor 1, a generator 2 and a frequency converter 7, wherein an output shaft of the motor 1 is connected with a rotating shaft of the generator 2 through an insulating coupler 4, a terminal of the motor 1 is connected with the frequency converter 7, the frequency converter is connected with a power supply, and an output end of the generator 2 is connected with a partial discharge test system. The frequency converter 7 can control the running speed of the motor 1 to reach the rated speed of the generator 2. The specific motor 1 can adopt a three-phase asynchronous motor with the rated voltage of 400V and the rated power of 30kW, and the generator can adopt a synchronous generator with the rated output voltage of 400V and the rated frequency of 50 Hz.
And the three-phase power is connected to the wire inlet end of the frequency converter, and the wire outlet end of the frequency converter is connected to the motor 1. The rotating speed of the motor 1 is set to be the rated rotating speed of the generator 2 through the frequency converter, so that the generator 2 generates electricity at the rated rotating speed under the driving of the motor 1, correct excitation voltage and current of the engine 2 are applied, and the generator 1 can stably output single-phase 400V electricity required by the test.
Because the frequency converter is adopted to control the constant rotating speed of the motor 1, and the electric energy of the generator 2 is directly connected into the partial discharge test loop, the power supply of the partial discharge test can be ensured to be pure, and the test result is ensured.
The utility model discloses a converter control motor rotational speed, the motor passes through the insulation coupling to be connected with the generator, drives the generator and works under rated revolution to produce rated current, owing to adopt the insulation coupling, the generator is kept apart with motor electrical, and the motor is not connected with the test system electricity simultaneously, has guaranteed the pureness of test system power, and this electrical power generating system is with low costs, and the power that sends is stable.
In an embodiment of the present invention, as shown in fig. 2, a pulse encoder 8 is disposed on the output shaft of the motor 1, and the pulse encoder 8 is in communication connection with the frequency converter 7. The pulse encoder 8 can output a pulse signal according to the real-time running rotating speed of the motor 1. The frequency converter 7 can adjust the running speed of the motor 1 according to the pulse signal so as to reach the rated speed of the generator 2.
The pulse encoder 8 is arranged on the output shaft of the motor 1, the pulse encoder 8 monitors the rotating speed of the motor 1 and generates a pulse signal, the pulse signal is sent to the frequency converter, the frequency converter 7 changes the output frequency according to the pulse signal, the rotating speed of the motor 1 is adjusted, the generator 2 is guaranteed to generate power at the rated rotating speed, and the closed-loop control of the rotating speed of the motor 1 is achieved.
In an embodiment of the present invention, the generator 2 and the motor 1 are disposed on a base 5, and the base 5 is disposed on the ground. The output end of the generator 2 is provided with a junction box 6, and a wiring terminal is arranged in the junction box 6 and used for wiring a partial discharge test system. The base 5 is provided with a control cabinet 3, and the frequency converter 7 is arranged in the control cabinet 3. The frequency converter 7 is arranged in the control cabinet 3, and the whole control cabinet is made of iron, so that interference can be effectively reduced. Meanwhile, all the devices are arranged on the same base 5 to form a whole, so that the installation and the transportation are convenient.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (7)
1. The power supply system for the partial discharge test system is characterized by comprising a motor (1), a generator (2) and a frequency converter (7), wherein an output shaft of the motor (1) is connected with a rotating shaft of the generator (2) through an insulating coupler (4), a wiring terminal of the motor (1) is connected with the frequency converter (7), the frequency converter (7) is connected with a power supply, and an output end of the generator (2) is connected with the partial discharge test system;
the frequency converter (7) can control the running speed of the motor (1) to reach the rated speed of the generator (2).
2. The power supply system for the partial discharge test system according to claim 1, wherein a pulse encoder (8) is arranged on an output shaft of the motor (1), and the pulse encoder (8) is connected with the frequency converter (7) in a communication way;
the pulse encoder (8) can output a pulse signal according to the real-time running rotating speed of the motor (1);
the frequency converter (7) can adjust the running rotating speed of the motor (1) according to the pulse signal so as to reach the rated rotating speed of the generator (2).
3. The power supply system for a partial discharge test system according to claim 1, wherein the generator (2) and the motor (1) are provided on a base (5), and the base (5) is provided on the ground.
4. The power supply system for the partial discharge test system according to claim 3, wherein a control cabinet (3) is provided on the base (5), and the frequency converter (7) is provided in the control cabinet (3).
5. The power supply system for a partial discharge test system according to claim 1, wherein the output end of the generator (2) is provided with a junction box (6), and the junction box (6) is internally provided with a terminal for connecting the partial discharge test system.
6. The power supply system for a partial discharge test system according to claim 1, wherein the generator (2) comprises a synchronous generator.
7. The power supply system for a partial discharge test system according to claim 6, wherein the motor (1) comprises a three-phase asynchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123020332.0U CN216848004U (en) | 2021-12-03 | 2021-12-03 | Power supply system for partial discharge test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123020332.0U CN216848004U (en) | 2021-12-03 | 2021-12-03 | Power supply system for partial discharge test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216848004U true CN216848004U (en) | 2022-06-28 |
Family
ID=82104984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123020332.0U Active CN216848004U (en) | 2021-12-03 | 2021-12-03 | Power supply system for partial discharge test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216848004U (en) |
-
2021
- 2021-12-03 CN CN202123020332.0U patent/CN216848004U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102255586B (en) | Constant power wide speed regulation control method for permanent magnet synchronous motor | |
| CN106451531B (en) | A kind of multiphase electricity generation-unsteady flow integral system and its control method | |
| CN105098833A (en) | Asynchronous constant speed wind turbine system for micro grid and working method thereof | |
| WO2017215182A1 (en) | Induction generation system and train | |
| CN216848004U (en) | Power supply system for partial discharge test system | |
| CN103187914A (en) | Power generation system based on brushless double-fed generator and excitation method for power generation system | |
| CN201345572Y (en) | Flameproof and intrinsically safe variable frequency motor | |
| CN107359643A (en) | A kind of stator permanent-magnet dual-rotor wind power generation system | |
| CN101771305A (en) | Explosion-proof and intrinsic safety frequency conversion motor | |
| CN114047415A (en) | Power supply system for partial discharge test system | |
| CN216851764U (en) | Energy storage type variable frequency transmission device | |
| CN104716882A (en) | Three-phase-single-phase generation system based on open-coil winding motor and control method thereof | |
| CN104153943A (en) | Wind power system based on coaxial hybrid generators | |
| CN203225693U (en) | Power generation system based on brushless double-fed generator | |
| CN210578271U (en) | Power supply rotation conversion device | |
| CN207588466U (en) | For the current transformer of wind power plant transmission system and wind power plant transmission system | |
| CN203219238U (en) | Intelligent load tracking motor power saving system | |
| CN102270851A (en) | High efficient and intelligent grid-connected system of wind driven generator | |
| CN113852318A (en) | New energy power generation direct drive system | |
| CN207588640U (en) | The humorous whole pressure swing type magnetic energy source generating set of three-phase | |
| CN201656891U (en) | Pulse controller for direct-current motor | |
| CN201134784Y (en) | Frequency-changing speed-regulating apparatus of rotor based on active filtering technique | |
| CN217590519U (en) | Energy-saving fan | |
| CN217563340U (en) | Electric system of double-fed wind driven generator | |
| CN116094056B (en) | Electrical main wiring structure and method of full-power variable-frequency pumped storage unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |