CN104135064A - Grid connection switching device for auxiliary power - Google Patents
Grid connection switching device for auxiliary power Download PDFInfo
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- CN104135064A CN104135064A CN201410381184.0A CN201410381184A CN104135064A CN 104135064 A CN104135064 A CN 104135064A CN 201410381184 A CN201410381184 A CN 201410381184A CN 104135064 A CN104135064 A CN 104135064A
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- China
- Prior art keywords
- switching device
- collection plate
- station service
- grid connection
- auxiliary power
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Abstract
The invention provides a grid connection switching device for auxiliary power and belongs to the technical field of electrical equipment. The grid connection switching device for the auxiliary power comprises a shell, a liquid crystal display, an operation key, a main board, a remote signaling collection plate and a remote metering collection plate. The liquid crystal display and the operation key are installed on the surface of the shell, and connected with the main board through shell through holes. The remote signaling collection plate and the remote metering collection plate are connected with the main board. The remote metering collection plate is coupled with a power source. The grid connection switching device has the advantages of comprising a plurality of switching modes, and meeting the requirements of various power plants; the device can automatically identify the state of the auxiliary power, the optimal switching opportunity is selected, no-impact switching is achieved, and continuous uninterrupted power supply can be effectively ensured.
Description
Technical field
The present invention relates to the grid-connected switching device shifter of a kind of station service, belong to electrical equipment technical field.
Background technology
" station service " refers to that power plant is the electricity consumption that normal operation provides safeguard.When unit normally moves, use the power supply of generating set oneself, and the short time of having to is used online power supply or use stand-by power supply in factory under startup, shutdown, accident conditions.What power is continuously, reliably the primary condition of various power consumption equipment safe operations, and therefore, the occasion majority that power supply reliability is had relatively high expectations is furnished with duplex feeding power supply.Successful switch between two-way power supply is the key of continuous uninterrupted power supply, the reason of Auxiliary System in Power Plant switching that Here it is.
For domestic most of power plant, the capacity of station service high-tension motor is large and quantity is more.In the time that service power is interrupted, due to the machinery inertial of high-voltage motor and load, motor will maintain long period continuation rotation, and will change asynchronous generator operating condition into.Therefore station service bus can maintain certain residual voltage slow-decay within a period of time, and frequency also can be along with rotating speed reduces and slow decreasing.Interrupt moment in service power, the attenuation of bus residual voltage is also little, but the vector angular difference of residual voltage and backup power source voltage has started to pull open.If the opportunity of in-put of spare power supply is improper, by producing very large impulse current, directly act on motor, this has not only affected the useful life of motor, even may cause station service to interrupt, and its consequence is very serious.Therefore, station service switches and must, according to the residual voltage attenuation characteristic of system, select suitable switching time.Draw according to practical operating experiences, for ensureing the successful switch of station service and not producing large impulse current, the most suitable closing moment of auxiliaries-supply circuit-breaker is, the phase angle difference of auxiliary bus bar residual voltage and backup power source voltage is no more than 30 °, and station service electrical system is switched overall process in 100ms.
The switch mode that domestic conventional station service electrical system is common and Starting mode have following several: the switching of switching, connect in parallel, switching fast.Correct, the reliable of the switching of station service the safe operation of power plant, has very important effect, adopts suitable switching mode, can make power-plant operation more stable, safer.
For the grid-connected switching state of station service, taking the self-shield switching device shifter of automatic self energy is trend of the times.
Summary of the invention
For defect and the problem of the grid-connected switching device shifter of existing station service, the invention provides the grid-connected switching device shifter of a kind of station service, can automatically identify bus residual voltage state, and select optimum switching mode, realize without impacting and switching.
In order to achieve the above object, the invention provides following technical scheme:
The grid-connected switching device shifter of station service, it is characterized in that, comprise: housing, LCDs, operation push-button, mainboard, remote signalling collection plate, telemetry-acquisition plate, described LCDs and operation push-button are arranged on surface of shell, and be connected with mainboard by housing through-hole, described remote signalling collection plate is connected with mainboard with telemetry-acquisition plate, and described telemetry-acquisition plate couples mutually with power supply.
Further, the grid-connected switching device shifter of described station service, without impacting conversion.
Further, the grid-connected switching device shifter of described station service, comprises multiple switching mode.
The invention has the beneficial effects as follows: this station service grid-connecting apparatus comprises multiple switching mode, meet the different demands of various power plant; This device can be identified station service state automatically, and selects optimum switching time, realizes without impacting and switching, and effectively ensures continuous continual power supply.
Brief description of the drawings
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make technical scheme of the present invention and other beneficial effect apparent.
Fig. 1 is the A-A figure of the grid-connected switching device shifter of station service of the present invention;
Fig. 2 is the rearview of the grid-connected switching device shifter of station service of the present invention.
Embodiment
Technological means and the effect thereof taked for further setting forth the present invention, be described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
Refer to Fig. 1, the grid-connected switching device shifter of station service of the present invention comprises: housing 1, LCDs 2, operation push-button 3, mainboard 4, remote signalling collection plate 5, telemetry-acquisition plate 6, described LCDs 2 is arranged on housing 1 surface with operation push-button 3, and be connected with mainboard 4 by housing 1 through hole, described remote signalling collection plate 5 is connected with mainboard 4 with telemetry-acquisition plate 6, and described telemetry-acquisition plate 6 couples mutually with power supply.By described liquid crystal display 2, switching mode can be set, and data need to switch time.The information such as described telemetry-acquisition plate 6 collecting works and terminal voltage for subsequent use, line voltage distribution, frequency, phase angle, and the information of collection is defeated by remote signalling collection plate 5.Described remote signalling collection plate determines whether switching according to the data value arranging, and read switch state, and the definite value logic that control relay is set according to device realizes automatically and manual switchover station service.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (3)
1. the grid-connected switching device shifter of station service, it is characterized in that, comprise: housing, LCDs, operation push-button, mainboard, remote signalling collection plate, telemetry-acquisition plate, described LCDs and operation push-button are arranged on surface of shell, and be connected with mainboard by housing through-hole, described remote signalling collection plate is connected with mainboard with telemetry-acquisition plate, and described telemetry-acquisition plate couples mutually with power supply.
2. the grid-connected switching device shifter of station service according to claim 1, is characterized in that, without impacting conversion.
3. the grid-connected switching device shifter of station service according to claim 1, is characterized in that, comprises multiple switching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381184.0A CN104135064A (en) | 2014-08-06 | 2014-08-06 | Grid connection switching device for auxiliary power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381184.0A CN104135064A (en) | 2014-08-06 | 2014-08-06 | Grid connection switching device for auxiliary power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104135064A true CN104135064A (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410381184.0A Pending CN104135064A (en) | 2014-08-06 | 2014-08-06 | Grid connection switching device for auxiliary power |
Country Status (1)
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| CN (1) | CN104135064A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735628Y (en) * | 2004-02-03 | 2005-10-19 | 熊家寅 | Serial control device for synchronization and fast switching between microcomputers |
| CN101728865A (en) * | 2009-09-23 | 2010-06-09 | 南京合富共展机电科技有限公司 | Undisturbed stable switching method for industrial enterprise factory electrical system |
| CN203014473U (en) * | 2012-11-29 | 2013-06-19 | 南京励磁系统工程有限公司 | A microcomputer-controlled power supply for station fast switching device |
| CN103501042A (en) * | 2013-10-11 | 2014-01-08 | 国家电网公司 | Isolated grid auxiliary power switching system and method with automatic regulation capacity |
-
2014
- 2014-08-06 CN CN201410381184.0A patent/CN104135064A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735628Y (en) * | 2004-02-03 | 2005-10-19 | 熊家寅 | Serial control device for synchronization and fast switching between microcomputers |
| CN101728865A (en) * | 2009-09-23 | 2010-06-09 | 南京合富共展机电科技有限公司 | Undisturbed stable switching method for industrial enterprise factory electrical system |
| CN203014473U (en) * | 2012-11-29 | 2013-06-19 | 南京励磁系统工程有限公司 | A microcomputer-controlled power supply for station fast switching device |
| CN103501042A (en) * | 2013-10-11 | 2014-01-08 | 国家电网公司 | Isolated grid auxiliary power switching system and method with automatic regulation capacity |
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Application publication date: 20141105 |