CN207353904U - The synchronous grid-connected dual power supply handover control system of a kind of generating set and alternating current - Google Patents
The synchronous grid-connected dual power supply handover control system of a kind of generating set and alternating current Download PDFInfo
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- CN207353904U CN207353904U CN201721407528.6U CN201721407528U CN207353904U CN 207353904 U CN207353904 U CN 207353904U CN 201721407528 U CN201721407528 U CN 201721407528U CN 207353904 U CN207353904 U CN 207353904U
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- power supply
- generating set
- dual power
- alternating current
- control system
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Abstract
It the utility model is related to a kind of generating set and alternating current synchronously grid-connected dual power supply handover control system, including controller, governor, excitation unit, dual power supply ATS switches and battery, the dual power supply ATS switches have two input terminals and an output terminal, two input terminals connect generating set and alternating current, export terminating load, the governor is used for the rotating speed of regulator generator group, makes rotary speed of generator group close to synchronous rotational speed；The excitation unit is used for the exciting current of regulator generator group, makes generating set terminal voltage close to line voltage；When difference on the frequency and voltage amplitude value difference in same period condition all meet specified criteria, controller sends switching signal automatically, and selects to close city's electrical circuit breakers when zero phase angle difference arrives, and is then turned off the breaker of generating set.When so two-way power supply is completely the same, dash current caused by controlling switch combined floodgate moment is less than permissible value, and generating set is drawn into rapidly same period operation, and grid-connected moment power supply quality is good.
Description
Technical field
Generator set controller technical field is the utility model is related to, more particularly to a kind of generating set and alternating current synchronization are simultaneously
The dual power supply handover control system of net.
Background technology
With society development and it is plant-scale constantly expand, the requirement to power quality and power supply reliability is also therewith
It is continuously improved.Present generator is powered with the mode of bulk power grid parallel running, i.e., the more synchronous generators in bulk power grid
Parallel running, forms a very big power network.It is stringenter this requires being required with the grid-connected control system of bulk power grid, necessarily
Voltage and frequency are ensured in the range of satisfaction, therefore such grid-connected system country strictly controls, without particular applications
Do not allow generally grid-connected with bulk power grid.Diesel emergency generating set and ATS switching switches are all generally configured with factory, in alternating current
After power failure, by electric set electric supply, after alternating current normally returns, diesel generating set and alternating current simultaneous interconnecting, such system is only
It is to be incorporated into the power networks with alternating current moment, grid supply quality will not be interfered, therefore need not just do special grid-connected application, still
For generating set if when voltage, frequency, phase angle are inconsistent, direct grid-connected can produce impact, influence power supply quality, or even make
Into load power down, have to be hoisted.
Utility model content
The purpose of this utility model is to provide a kind of small, the more preferable generating set of power supply quality of grid-connected impact and alternating current are same
Walk grid-connected dual power supply handover control system.
The utility model is realized in this way：The synchronous grid-connected dual power supply switching control system of a kind of generating set and alternating current
System, including controller, governor, excitation unit, dual power supply ATS switch and battery, the dual power supply ATS switches are defeated with two
Enter end and an output terminal, two input terminals connect generating set and alternating current, export terminating load, and the governor is used to adjust
The rotating speed of generating set is saved, makes rotary speed of generator group close to synchronous rotational speed；The excitation unit is used for encouraging for regulator generator group
Magnetoelectricity stream, makes generating set terminal voltage close to line voltage；The battery is powered for device in order to control, battery cathode ground connection；
When difference on the frequency and voltage amplitude value difference in same period condition all meet specified criteria, controller sends switching signal automatically, and selects
City's electrical circuit breakers are closed when zero phase angle difference arrives, are then turned off the breaker of generating set.
Wherein, the output of the dual power supply ATS switches is equipped with current transformer, and current transformer one end is born with battery
Extremely altogether, the load current measurement port of another termination controller.
Wherein, the generating set and alternating current are connected with the voltage measurement port on controller.
Wherein, the controller uses DSE335 controllers.
The beneficial effects of the utility model are：The synchronous grid-connected dual power supply handover control system of the generating set and alternating current
Including controller, governor, excitation unit, dual power supply ATS switches and battery, the quasi- synchronizing mode of use is that detection is treated and generated electricity
After voltage, frequency, phase and the alternating current of unit comply fully with condition in parallel, switching signal is sent automatically；Comprising the concrete steps that to treat
Grid-connected generating set, by governor regulator generator group rotating speed, makes rotary speed of generator group close to synchronously before input coefficient
Rotating speed；By excitation unit regulator generator group exciting current, make generating set terminal voltage close to line voltage；In same period condition
In difference on the frequency and voltage amplitude value difference when all meeting specified criteria, select to close city's electrical circuit breakers when zero phase angle difference arrives, this
When sample two-way power supply is completely the same, the controlling switch dash current caused by moment that closes a floodgate is less than permissible value, generating set quilt rapidly
Same period operation is pulled in, unit switch is then turned off, completes whole simultaneous interconnecting process, grid-connected moment power supply quality is good, load
It will not power off.
Brief description of the drawings
Fig. 1 is the wiring signal of the synchronous grid-connected dual power supply handover control system embodiment of the generating set and alternating current
Figure.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
As the embodiment of the synchronous grid-connected dual power supply handover control system of generating set described in the utility model and alternating current,
As shown in Figure 1, including controller, governor, excitation unit, dual power supply ATS switches and battery, the dual power supply ATS switches tool
There are two input terminals and an output terminal, two input terminals connect generating set and alternating current, export terminating load, the speed governing
Device is used for the rotating speed of regulator generator group, makes rotary speed of generator group close to synchronous rotational speed；The excitation unit, which is used to adjust, to generate electricity
The exciting current of unit, makes generating set terminal voltage close to line voltage；The battery is powered for device in order to control, battery cathode
Ground connection；When difference on the frequency and voltage amplitude value difference in same period condition all meet specified criteria, controller sends switching signal automatically,
And select to close city's electrical circuit breakers when zero phase angle difference arrives, it is then turned off the breaker of generating set.
In the present embodiment, the controller uses DSE335 controllers, and the output of the dual power supply ATS switches is set
Have a current transformer, current transformer one end with battery cathode altogether, the load current measurement port of another termination controller.Institute
Generating set and alternating current is stated to be connected with the voltage measurement port on controller.
Synchronously grid-connected dual power supply handover control system includes controller, governor, excitation for the generating set and alternating current
Device, dual power supply ATS switches and battery, were connected in parallel power supply with alternating current moment, and the quasi- synchronizing mode of use is to detect
After and generating set voltage, frequency, phase and alternating current comply fully with condition in parallel after, send switching signal automatically；Specific step
Suddenly it is that will treat grid-connected generating set before input coefficient, by governor regulator generator group rotating speed, makes rotary speed of generator group
Close to synchronous rotational speed；By excitation unit regulator generator group exciting current, make generating set terminal voltage close to line voltage；
When difference on the frequency and voltage amplitude value difference in same period condition all meet specified criteria, the closure alternating current when zero phase angle difference arrives is selected to break
When road device, such two-way power supply are completely the same, the controlling switch dash current caused by moment that closes a floodgate is less than permissible value, generating set
It is rapid to be drawn into same period operation, unit switch is then turned off, completes whole simultaneous interconnecting process, grid-connected moment power supply quality
Good, load will not power off.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (4)
1. the synchronous grid-connected dual power supply handover control system of a kind of generating set and alternating current, it is characterised in that including controller, adjust
Fast device, excitation unit, dual power supply ATS switches and battery, the dual power supply ATS switches are with two input terminals and an output
End, two input terminals connect generating set and alternating current, export terminating load, and the governor is used for turning for regulator generator group
Speed, makes rotary speed of generator group close to synchronous rotational speed；The excitation unit is used for the exciting current of regulator generator group, makes generator
Terminal voltage is organized close to line voltage；The battery is powered for device in order to control, battery cathode ground connection；Frequency in same period condition
When difference and voltage amplitude value difference all meet specified criteria, controller sends switching signal automatically, and selects when zero phase angle difference arrives
City's electrical circuit breakers are closed, are then turned off the breaker of generating set.
2. the synchronous grid-connected dual power supply handover control system of generating set and alternating current according to claim 1, it is characterised in that
The output of dual power supply ATS switch is equipped with current transformer, current transformer one end and battery cathode altogether, the other end
Connect the load current measurement port of controller.
3. the synchronous grid-connected dual power supply handover control system of generating set and alternating current according to claim 1, it is characterised in that
The generating set and alternating current are connected with the voltage measurement port on controller.
4. the synchronous grid-connected dual power supply handover control system of generating set and alternating current according to claim 1, it is characterised in that
The controller uses DSE335 controllers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407528.6U CN207353904U (en) | 2017-10-27 | 2017-10-27 | The synchronous grid-connected dual power supply handover control system of a kind of generating set and alternating current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407528.6U CN207353904U (en) | 2017-10-27 | 2017-10-27 | The synchronous grid-connected dual power supply handover control system of a kind of generating set and alternating current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353904U true CN207353904U (en) | 2018-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721407528.6U Expired - Fee Related CN207353904U (en) | 2017-10-27 | 2017-10-27 | The synchronous grid-connected dual power supply handover control system of a kind of generating set and alternating current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207353904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467721A (en) * | 2020-09-18 | 2021-03-09 | 北京潞电电气设备有限公司 | Three-power-supply power supply system control device |
| CN112531690A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司清远供电局 | Power supply switching system and method |
-
2017
- 2017-10-27 CN CN201721407528.6U patent/CN207353904U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467721A (en) * | 2020-09-18 | 2021-03-09 | 北京潞电电气设备有限公司 | Three-power-supply power supply system control device |
| CN112531690A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司清远供电局 | Power supply switching system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20211027 |
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| CF01 | Termination of patent right due to non-payment of annual fee |