CN211701492U - Bus voltage fast recovery protection device - Google Patents
Bus voltage fast recovery protection device Download PDFInfo
- Publication number
- CN211701492U CN211701492U CN201922319871.0U CN201922319871U CN211701492U CN 211701492 U CN211701492 U CN 211701492U CN 201922319871 U CN201922319871 U CN 201922319871U CN 211701492 U CN211701492 U CN 211701492U
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- China
- Prior art keywords
- fast
- protection device
- switch
- bus voltage
- permanent magnet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to an electric power system field specifically is a busbar voltage resumes protection device fast, including the isolator of connecting the generating line, with isolator series connection in proper order is current collector and fast switch, parallel connection in current collector and fast switch be comprehensive controller, comprehensive controller includes the hardware framework that computer, digital signal processing and FPGA device constitute. The utility model discloses bus voltage resumes protection device fast, when the system takes place "voltage sag", can react to with bus voltage recovery, guarantee sensitive equipment continuous operation.
Description
Technical Field
The utility model relates to an electric power system field specifically is a busbar voltage resumes protection device fast.
Background
At present, when an interphase short-circuit fault occurs on any outgoing line in a distribution network system area, the voltage of the bus at the current level and the voltage of the bus at the upper level are greatly reduced, which is called as a voltage sag phenomenon. When the traditional relay protection action is implemented until the breaker completely breaks the fault branch, the time is about 100ms, and the system voltage is recovered to a normal level. During the 'voltage sag' lasting about 100ms, some sensitive loads such as an alternating current contactor and low voltage protection which control important production equipment stop the operation of equipment such as an undervoltage release device, a motor and a frequency converter, so that the important production equipment stops the operation in a large area. The higher the voltage level of the faulty branch, the greater the impact range. And adopt traditional stand-by power supply auto-switch and dual supply fast switch over technique, can not solve the district internal short circuit and cause "voltage sag", lead to the problem of system large tracts of land power failure accident | for effectively preventing the district internal short circuit to cause the accident of "voltage sag" and the important sensitive equipment that "short-time interrupt" trouble leads to shutting down, be the utility model provides a subject.
Disclosure of Invention
The utility model provides a not enough to prior art, the utility model provides a busbar voltage resumes protection device fast, when the system takes place "voltage sag", can react to with busbar voltage recovery, guarantee sensitive equipment continuous operation.
In order to solve the technical problem, the utility model discloses take following technical scheme:
bus voltage resumes protection device fast, including the isolator of connecting the generating line, with isolator series connection in proper order is current collector and fast switch, parallel connection in current collector and fast switch be integrated control ware, integrated control ware includes the hardware framework that microcomputer, digital signal processing and FPGA device constitute.
Preferably, the fast switch is an eddy current driven fast switch.
Preferably, the eddy current driving fast switch comprises a porcelain bushing, a static contact and a moving contact which are movably arranged in the porcelain bushing, the moving contact is connected with a connecting rod, an armature is arranged at the bottom of the connecting rod, a closing holding permanent magnet is arranged on the upper side of the armature, an opening holding permanent magnet is arranged on the lower side of the armature, and the eddy current driving fast switch further comprises a control circuit which is connected with the closing holding permanent magnet and the opening holding permanent magnet in series.
Preferably, the control circuit is formed by connecting an opening coil, a closing coil, an eddy current disc, an opening energy storage capacitor, a closing energy storage capacitor and a charging power supply.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses bus voltage resumes protection device fast, when the system takes place "voltage sag", can react to with bus voltage recovery, guarantee sensitive equipment continuous operation.
Drawings
FIG. 1 is a schematic diagram of the circuit of the present invention;
fig. 2 is the schematic diagram of the structure of the eddy current driven fast switch of the present invention.
Detailed Description
Referring to fig. 1-2, the bus voltage fast recovery protection device includes a disconnecting switch connected to a bus, a current collector and a fast switch connected in series with the disconnecting switch in sequence, and a comprehensive controller connected in parallel to the current collector and the fast switch, wherein the comprehensive controller includes a hardware framework composed of a microcomputer, a digital signal processor and an FPGA device. The fast switch is an eddy current driven fast switch. The eddy current driving fast switch comprises a porcelain bushing 1, a static contact 2 and a moving contact 3 which are movably arranged in the porcelain bushing 1, wherein the moving contact 3 is connected with a connecting rod 4, an armature 5 is arranged at the bottom of the connecting rod 4, a closing maintaining permanent magnet 6 is arranged on the upper side of the armature 5, an opening maintaining permanent magnet 7 is arranged on the lower side of the armature 5, and the eddy current driving fast switch further comprises a control circuit 7 which is connected with the closing maintaining permanent magnet 5 and the opening maintaining permanent magnet 6 in series. The control circuit 7 is formed by connecting an opening coil 7-1, a closing coil 7-2, an eddy current disc 7-3, an opening energy storage capacitor 7-4, a closing energy storage capacitor 7-5 and a charging power supply 7-6.
The utility model discloses install theory of operation: the utility model discloses bus voltage resumes protection device fast, when the system takes place "voltage sag", the current collector sends the current signal who gathers to the integrated control ware, and the microcomputer, digital signal processing and the FPGA device of integrated control ware are through the operation and react to send out the switch separating brake of instruction control vortex drive fast switch, vortex drive fast switch separating brake theory of operation as follows:
the utility model discloses the circular telegram of separating brake coil 7-1 and closing coil 7-2 that eddy current drive fast switch passes through control circuit 7 specifically is through parallelly connected separating brake energy storage capacitor 7-4 at charging source 7-6 both ends, closing brake energy storage capacitor 7-5 controls separating brake coil 7-1 and closing coil 7-2 circular telegram, separating brake energy storage capacitor 7-4, closing brake energy storage capacitor 7-5 plays the effect of charge-discharge, can drive armature 5's up-and-down motion under electrified separating brake coil 7-1 and closing coil 7-2 and vortex dish 7-3's effect, armature 5's removal drives the moving contact 3 motion that links to each other with it, static contact 2 and moving contact 3 connect in the separation and realized closing and separating brake.
When the eddy current drives the fast switch to open the brake, the bus protection impedance is put into the circuit to compensate the impedance lost by the short circuit of the branch circuit, and the current of the branch circuit is limited to be near the rated current from the short circuit value, so that the residual voltage of the bus is maintained, and the bus is ensured to continuously supply power to other branch circuits without short circuit faults.
When the eddy current drives the quick switch to be switched on, the normal power supply of the branch is recovered; and (4) the bus protection impedance is withdrawn, and the operation of the bus residual voltage protection function is completed once.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can change or modify the technical content of the above disclosure into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention, unless departing from the contents of the present invention.
Claims (3)
1. Bus voltage resumes protection device fast, its characterized in that: the isolating switch comprises a connecting bus, a current collector and a quick switch are sequentially connected with the isolating switch in series, and a comprehensive controller is connected with the current collector and the quick switch in parallel.
2. The bus voltage fast recovery protection device of claim 1, wherein: the fast switch is an eddy current driven fast switch.
3. The bus voltage fast recovery protection device of claim 2, wherein: the eddy current driving fast switch comprises a porcelain bushing, a static contact and a moving contact which are movably arranged in the porcelain bushing, the moving contact is connected with a connecting rod, an armature is arranged at the bottom of the connecting rod, a closing maintaining permanent magnet is arranged on the upper side of the armature, an opening maintaining permanent magnet is arranged on the lower side of the armature, and the eddy current driving fast switch further comprises a control circuit which is connected with the closing maintaining permanent magnet and the opening maintaining permanent magnet in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319871.0U CN211701492U (en) | 2019-12-23 | 2019-12-23 | Bus voltage fast recovery protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319871.0U CN211701492U (en) | 2019-12-23 | 2019-12-23 | Bus voltage fast recovery protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211701492U true CN211701492U (en) | 2020-10-16 |
Family
ID=72793322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319871.0U Active CN211701492U (en) | 2019-12-23 | 2019-12-23 | Bus voltage fast recovery protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211701492U (en) |
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2019
- 2019-12-23 CN CN201922319871.0U patent/CN211701492U/en active Active
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