CN113193803A - Double-voltage online backup voltage regulating system and working method thereof - Google Patents
Double-voltage online backup voltage regulating system and working method thereof Download PDFInfo
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- CN113193803A CN113193803A CN202110356250.9A CN202110356250A CN113193803A CN 113193803 A CN113193803 A CN 113193803A CN 202110356250 A CN202110356250 A CN 202110356250A CN 113193803 A CN113193803 A CN 113193803A
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- 238000010248 power generation Methods 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/02—Details
Abstract
The invention provides a double-voltage online backup voltage regulating system and a working method thereof, wherein the system comprises a generator, a first voltage regulator and a second voltage regulator, the first voltage regulator and the second voltage regulator output voltage regulating signals to the generator through a switching unit, and the switching unit receives a first switching signal output by a control switch; and the dual-voltage online backup voltage regulating system is also provided with a controller, the controller receives a voltage signal output by the generator and sends the voltage signal to an upper computer, and the controller receives a control signal sent by the upper computer and sends a second switching signal to the switching unit according to the control signal. The method comprises the steps that a controller collects voltage signals output by a generator, an upper computer sends control signals to the controller when judging that the voltage values of the voltage signals are abnormal, and the controller sends second switching signals to a switching unit according to the control signals. The invention can conveniently switch the voltage regulator aiming at the generator under the special use environment.
Description
Technical Field
The invention relates to the technical field of control of power generation systems, in particular to a dual-voltage online backup voltage regulation system and a working method of the system.
Background
Generators are common devices for generating electricity, and in order to control the voltage output by the generator, some existing generators use a voltage regulator to control the output voltage of the generator. If only one voltage regulator is used, when the voltage regulator fails, the voltage output by the generator is easy to fluctuate, and the normal operation of the subsequent electrical appliance is influenced. In order to ensure that the output voltage of the generator is stable, two voltage regulators are typically provided, one of which acts as the primary voltage regulator and the other acts as a backup voltage regulator, and if the primary voltage regulator fails, a switch is made to the backup voltage regulator.
In order to realize the switching between the two voltage regulators, a conventional method is to provide a switching unit, which may be a relay, and a control switch, where the control switch drives the switching unit to operate, for example, the relay. However, in some special use environments, the requirement on power supply reliability is high, but due to the fact that the use environments are special, when the voltage regulator breaks down, cost and a large amount of time are consumed for replacement or replacement, and great influence is caused on task guarantee, and therefore replacement or switching of the standby voltage regulator through manual operation is not practical. For example, when the generator set is installed on a mountain or on the top of a tall building, the generator may be located thousands of meters away from the ground, and in such a use environment, the generator often needs to communicate with the ground through an optical cable.
Because the switching of the voltage regulator in the existing mode needs to be carried out manually, the switching of the voltage regulator is very difficult under a special use environment, and the output voltage of the generator is not favorably regulated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a dual-voltage online backup voltage regulating system to solve the problem that a voltage regulator is difficult to switch under a special use environment.
The invention also provides a working method of the dual-voltage online backup voltage regulating system.
In order to achieve the purpose, the invention is realized by the following technical scheme: a dual-voltage online backup voltage regulating system comprises a generator, a first voltage regulator and a second voltage regulator, wherein the first voltage regulator and the second voltage regulator output voltage regulating signals to the generator through a switching unit, and the switching unit receives a first switching signal output by a control switch; and the dual-voltage online backup voltage regulating system is also provided with a controller, the controller receives a voltage signal output by the generator and sends the voltage signal to an upper computer, and the controller receives a control signal sent by the upper computer and sends a second switching signal to the switching unit according to the control signal.
Further, the switching unit comprises a relay, and a relay switch is connected with the first voltage regulator or the second voltage regulator; the controller is electrically connected with the coil of the relay.
Further, a normally closed contact of the relay switch is connected to the first voltage regulator, and a normally open contact of the relay switch is connected to the second voltage regulator.
Furthermore, the controller is provided with a voltage sampling module, and the voltage sampling module samples voltage signals output by the generator.
Further, the controller and the upper computer perform data transmission through a data transmission line; or the controller and the upper computer perform data transmission in a wireless mode.
Further, the control switch is a knob switch or a button or a selection switch or a miniature circuit breaker.
The working method of the double-voltage online backup voltage regulating system provided by the invention comprises the following steps: the controller collects voltage signals output by the generator and sends the voltage signals to the upper computer, the upper computer judges whether the voltage values of the voltage signals are abnormal or not, if the voltage values of the voltage signals are abnormal, the upper computer sends control signals to the controller, the controller sends second switching signals to the switching unit according to the control signals, and the switching unit switches the voltage regulator which outputs voltage regulating signals to the generator according to the second switching signals.
Furthermore, the switching unit also receives a first switching signal output by the control switch, and the switching unit switches the voltage regulator which outputs the voltage regulating signal to the generator according to the first switching signal.
Further, when the upper computer judges that the voltage value of the voltage signal is abnormal, an alarm signal is sent out.
Further, the switching unit comprises a relay, and a relay switch is connected with the first voltage regulator or the second voltage regulator; the controller sending a second switching signal to the switching unit according to the control signal comprises: the controller energizes the relay coil.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, two switching modes of a local manual control switch and a remote control are set, when the use environment of the generator is easy to switch the voltage regulators in a local manual control mode, the two voltage regulators can be switched by the control switch, and when the use environment of the generator is special and manual switching is inconvenient, the generator can be switched in a remote control mode, namely, the controller and an upper computer are used for switching the two voltage regulators. Therefore, the invention can solve the problems that the power generation is abnormal and the actual environment cannot be maintained due to uncontrollable factors in the operation and maintenance of the power station, can well solve the practical problems in the special application scene, and has good operability and pertinence.
Drawings
Fig. 1 is an electrical schematic block diagram of an embodiment of a dual-voltage online backup voltage regulating system according to the present invention.
Fig. 2 is an electrical schematic diagram of an embodiment of a dual-voltage online backup voltage regulating system according to the present invention.
Fig. 3 is a flowchart of an embodiment of a working method of a dual-voltage online backup voltage regulating system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a dual-voltage online backup voltage regulating system, which comprises a generator 11, a switching unit 12, a control switch 13, a controller 15, an upper computer 16 and two voltage regulators, namely a voltage regulator 21 and a voltage regulator 22, referring to fig. 1.
The voltage signal output by the generator 11 can be collected by the controller 15, and a voltage sampling module is arranged in the controller 15 and used for sampling the voltage signal output by the generator 11, for example, sampling the voltage value of the voltage signal output by the generator 11, and sending the sampled voltage value to the upper computer 16. The upper computer 16 may be a remotely arranged computer, and the upper computer 16 determines whether the voltage value of the voltage signal output by the generator 11 is abnormal, for example, the voltage is too high or too low, and if the voltage output by the generator 11 is abnormal, the currently operating voltage regulator needs to be switched by the controller 15.
The two voltage regulators 21, 22 may output voltage regulation signals to the generator 11, and specifically, only one of the voltage regulator 21 and the voltage regulator 22 is in an operating state, that is, the two voltage regulators do not output voltage regulation signals to the generator 11 at the same time. The voltage regulators 21 and 22 output voltage regulation signals to the generator 11 through the switching means 12, and the switching means 12 is a relay, and switching between the voltage regulators 21 and 22 can be realized by switching operation of the relay. The voltage regulators 21 and 22 are known voltage regulators, and the operation principle of the voltage regulators 21 and 22 will not be described here.
The switching unit 12 may receive a first switching signal output by the control switch 13, and the control switch 13 may be a rotary switch or a push button or a selection switch or a miniature circuit breaker. In addition, the switching unit 12 may further receive a second switching signal output by the controller 15, the controller 15 may be a generator set controller, a PLC, or the like, and the controller 15 may be configured to detect a voltage output by the generator 11 and determine a state of the voltage regulator.
Referring to fig. 2, the voltage signal output by the generator 11 can be detected by the controller 15, and the controller 15 communicates with the upper computer 16, for example, via a data transmission line such as an optical fiber, or via a wireless communication mode, for example, a wireless communication module is disposed in the controller 15, a wireless communication module is also disposed in the upper computer 16, and the controller 15 and the upper computer 16 communicate wirelessly via their respective wireless communication modules.
The voltage regulator 21 is U1, the voltage regulator 22 is U2, the switching unit 12 comprises a relay KA1, as can be seen from FIG. 2, the normally closed contact of the relay KA1 is connected to two output terminals of the voltage regulator U1, the normally open contact of the relay KA1 is connected to two output terminals of the voltage regulator U2, and the fixed end of the switch of the relay KA1 is connected to the generator 11. Also, the controller 15 is connected to the coil of the relay KA1, so the controller 15 can energize the coil of the relay KA 1.
When the controller 15 does not energize the coil of the relay KA1, the relay KA1 is connected to the voltage regulator U1, and the voltage regulator U1 outputs a voltage regulation signal to the generator 11 through the relay KA 1. When the controller 15 supplies power to the coil of the relay KA1, the switch of the relay KA1 is operated, the switch of the relay KA1 is switched to a normally open contact, that is, the switch of the relay KA1 is connected to the voltage regulator U2, and the voltage regulator U2 outputs a voltage regulation signal to the generator 11 through the relay KA 1. When the controller 15 stops energizing the coil of the relay KA1, the switch of the relay KA1 returns to the initial state, i.e., is connected to the normally closed contact, and the voltage regulator U1 outputs a voltage regulation signal to the generator 11 through the relay KA 1.
Thus, controller 15 can effect switching of the two voltage regulators by energizing or de-energizing the coil of relay KA 1.
Of course, the control switch 13 may also realize the change of the switch state of the relay KA1, for example, the control switch 13 controls the coil of the relay KA1 to be powered on or powered off, so as to realize the manual switching of the two voltage regulators.
The working flow of the dual-voltage online backup voltage regulating system is described below with reference to fig. 3. Firstly, step S1 is executed, the controller receives the voltage signal output by the engine, and step S2 is executed, the controller samples the voltage signal output by the power generator, obtains the voltage value of the voltage signal output by the power generator, and sends the voltage value to the upper computer.
After the upper computer receives the voltage value of the voltage signal output by the generator sent by the controller, step S3 is executed to determine whether the voltage signal of the generator is abnormal, that is, whether the voltage value is abnormal, for example, the voltage value is too high or too low, if the voltage value is not abnormal, the upper computer returns to step S1 to continue to receive the voltage signal output by the generator, that is, continue to monitor the voltage signal output by the generator.
If the voltage signal output by the generator is abnormal, step S4 is executed, and the upper computer sends out an alarm signal. For example, an alarm window is displayed on the upper computer, and alarm characters are displayed in the alarm window. Or the upper computer outputs alarm sound, for example, the alarm is given in a voice prompt mode. Of course, the upper computer can also send out an alarm signal in a mode of driving the LED lamp.
In addition, the upper computer further executes step S5 to send a control signal to the controller, specifically, to send a control signal for switching the voltage regulator. For example, a virtual key is displayed on a display screen of the upper computer, and when a user clicks the virtual key, a control signal for switching the voltage regulator is immediately sent to the controller. Of course, the upper computer may also automatically send a control signal for switching the voltage regulator to the controller.
After receiving the control signal, the controller executes step S6 to output a second switching signal to the switching unit, specifically, the controller energizes the coil of the relay KA1 to change the energization state of the coil of the relay KA1, thereby operating the switch of the relay KA1 to realize the switching of the voltage regulator.
Of course, if the user has manually energized the coil of the relay KA1 before the controller has energized the coil of the relay KA1, that is, the user applies current to the coil of the relay KA1 through the control switch 13, it indicates that the user has manually switched the two voltage regulators, and the controller 15 does not energize the coil of the relay KA1 any more.
The dual-voltage online backup voltage regulating system uses the two voltage regulators to output voltage regulating signals to the generator, and even if one voltage regulator fails, the other voltage regulator can be started in time and output the voltage regulating signals to the generator, so that the voltage output by the generator is ensured to be stable. In addition, the invention provides two ways for switching the voltage regulator, namely, a user can realize manual switching by controlling the switch, the controller can also collect a voltage signal output by the generator, and the upper computer sends a second switching signal by the controller to realize remote switching of the voltage regulator.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A dual voltage online backup voltage regulation system comprising:
the power generator comprises a power generator, a first voltage regulator and a second voltage regulator, wherein the first voltage regulator and the second voltage regulator output voltage regulating signals to the power generator through a switching unit, and the switching unit receives a first switching signal output by a control switch;
the method is characterized in that:
the double-voltage online backup voltage regulating system is also provided with a controller, the controller receives a voltage signal output by the generator and sends the voltage signal to an upper computer, and the controller receives a control signal sent by the upper computer and sends a second switching signal to the switching unit according to the control signal.
2. The dual-voltage online backup voltage regulating system according to claim 1, characterized in that:
the switching unit comprises a relay, and the relay switch is connected with the first voltage regulator or the second voltage regulator;
the controller is electrically connected with the coil of the relay.
3. The dual-voltage online backup voltage regulating system according to claim 2, characterized in that:
the normally closed contact of the relay switch is connected to the first voltage regulator, and the normally open contact of the relay switch is connected to the second voltage regulator.
4. A dual voltage online backup voltage regulation system according to any one of claims 1 to 3, characterized in that:
the controller is provided with a voltage sampling module, and the voltage sampling module samples a voltage signal output by the generator.
5. A dual voltage online backup voltage regulation system according to any one of claims 1 to 3, characterized in that:
the controller and the upper computer perform data transmission through a data transmission line; or
The controller and the upper computer perform data transmission in a wireless mode.
6. A dual voltage online backup voltage regulation system according to any one of claims 1 to 3, characterized in that:
the control switch is a knob switch or a button or a selection switch or a miniature circuit breaker.
7. The operating method of the dual-voltage online backup and voltage regulation system according to any one of claims 1 to 6, characterized in that:
the controller collects voltage signals output by the generator and sends the voltage signals to the upper computer, the upper computer judges whether the voltage values of the voltage signals are abnormal or not, if the voltage values of the voltage signals are abnormal, the upper computer sends control signals to the controller, the controller sends second switching signals to the switching unit according to the control signals, and the switching unit switches the voltage regulator which outputs voltage regulating signals to the generator according to the second switching signals.
8. The working method of the dual-voltage online backup voltage regulating system according to claim 7, characterized in that:
the switching unit also receives a first switching signal output by the control switch, and the switching unit switches the voltage regulator which outputs a voltage regulating signal to the generator according to the first switching signal.
9. The working method of the dual-voltage online backup voltage regulating system according to claim 7 or 8, characterized in that:
and when the upper computer judges that the voltage value of the voltage signal is abnormal, an alarm signal is sent out.
10. The working method of the dual-voltage online backup voltage regulating system according to claim 7 or 8, characterized in that:
the switching unit comprises a relay, and the relay switch is connected with the first voltage regulator or the second voltage regulator;
the controller sending a second switching signal to the switching unit according to the control signal comprises: the controller energizes a coil of the relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110356250.9A CN113193803A (en) | 2021-04-01 | 2021-04-01 | Double-voltage online backup voltage regulating system and working method thereof |
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| CN202110356250.9A CN113193803A (en) | 2021-04-01 | 2021-04-01 | Double-voltage online backup voltage regulating system and working method thereof |
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|---|---|---|---|---|
| US20060226815A1 (en) * | 2005-04-06 | 2006-10-12 | Eaton Corporation | Excitation system having inner loop voltage regulator with by-pass capability |
| CN101188394A (en) * | 2007-09-10 | 2008-05-28 | 上海赛脉勀电气有限公司 | Voltage output device for automatic adjusting electromotor based on dual-channel circuit |
| CN205657569U (en) * | 2016-05-20 | 2016-10-19 | 上海马拉松·革新电气有限公司 | Two voltage generators of dual -frenquency |
| JP6109976B1 (en) * | 2016-01-29 | 2017-04-05 | オーハツ株式会社 | Automatic voltage regulator |
| CN107255051A (en) * | 2017-06-20 | 2017-10-17 | 吴联凯 | A kind of vehicle power power-generating control system and control method |
| CN211296610U (en) * | 2019-12-31 | 2020-08-18 | 天津塞班海洋工程技术有限公司 | Generator excitation control system |
-
2021
- 2021-04-01 CN CN202110356250.9A patent/CN113193803A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060226815A1 (en) * | 2005-04-06 | 2006-10-12 | Eaton Corporation | Excitation system having inner loop voltage regulator with by-pass capability |
| CN101188394A (en) * | 2007-09-10 | 2008-05-28 | 上海赛脉勀电气有限公司 | Voltage output device for automatic adjusting electromotor based on dual-channel circuit |
| JP6109976B1 (en) * | 2016-01-29 | 2017-04-05 | オーハツ株式会社 | Automatic voltage regulator |
| CN205657569U (en) * | 2016-05-20 | 2016-10-19 | 上海马拉松·革新电气有限公司 | Two voltage generators of dual -frenquency |
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| 赵永君: "自动化技术综合应用", 天津大学出版社, pages: 121 - 126 * |
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Application publication date: 20210730 |