CN102751116A - Quick electromagnetic repulsion mechanism based on fault current energy and change rate and application of quick electromagnetic repulsion mechanism - Google Patents
Quick electromagnetic repulsion mechanism based on fault current energy and change rate and application of quick electromagnetic repulsion mechanism Download PDFInfo
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- CN102751116A CN102751116A CN2012102506998A CN201210250699A CN102751116A CN 102751116 A CN102751116 A CN 102751116A CN 2012102506998 A CN2012102506998 A CN 2012102506998A CN 201210250699 A CN201210250699 A CN 201210250699A CN 102751116 A CN102751116 A CN 102751116A
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Abstract
The invention relates to a quick electromagnetic repulsion mechanism based on fault current energy and the change rate. The mechanism mainly comprises a main circuit current excitation flat plate coil (A), a metal plate (B) and a link mechanical mechanism (C). The metal plate (B) is parallelly positioned above the main circuit current excitation flat plate coil (A) and directly connected with and synchronously actions with the link mechanical mechanism (C). When the rise rate of the fault current is higher enough, the metal plate is quickly pushed away by means of the vortex electromagnetic repulsion between the main circuit current excitation flat plate coil and the metal plate, and the metal plate drives the link mechanism to move, so that the fault current energy and the change rate are fully used, and system control is not needed. The invention further relates to three specific applications of quick electromagnetic repulsion mechanism based on fault current energy and the change rate.
Description
Technical field
The present invention relates to technical field of electric appliances, particularly a kind of quick electromagnetic repulsive force mechanism and application thereof based on fault current energy and rate of change.
Background technology
Electric power system and control system major break down electric current or short circuit current protection are the most important assurances of electric power system and the operation of automatic control system normal reliable; Protection system needs quick acting mechanism to drive electrical contact system branch deenergizing or connect current-limiting circuit fast fast; Chen Degui is published in the latest developments that intelligent CPS (control and protection switch electrical equipment) introduced in " low-voltage electrical apparatus " 2008 the 9th phases " progress of control and protection switch electrical equipment " literary composition; In the nineties in last century; France Schneider company releases Integral series CPS, and the domestic KB0 series of also having developed relies on and impacts electromagnet as quick acting mechanism; There are many document introductions to adopt the quick acting mechanism of capacitor discharge type electromagnetic repulsion force mechanism as switch in the High-Voltage Electrical Appliances field; But these schemes all need power supply that energy and rate of change are provided, and need control system, have the integrity problem of protection.
Summary of the invention
In view of the deficiency of prior art, one of the object of the invention is to provide a kind of quick electromagnetic repulsive force mechanism based on fault current energy and rate of change, and this mechanism makes full use of fault current energy and rate of change with the realization quick acting and need not control system.
One of to achieve these goals; Technical scheme one of the present invention is: a kind of quick electromagnetic repulsive force mechanism based on fault current energy and rate of change; Comprise main circuit current excitation plate coil (A), metal dish (B), connecting rod mechanical mechanism (C); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action.
Further, the general voltage magnetizing coil in the line of described main circuit current excitation plate coil (A) footpath is thick, and the general voltage magnetizing coil of the number of turn is few.
Further, the material of described metal dish (B) is the metal of conduction.
When major break down electric current or short trouble take place when; Very big through main circuit current excitation plate coil current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current are producing eddy current in the parallel placed metal dish above the main circuit current excitation plate coil, and the eddy current that produces in the electric current of main circuit current excitation plate coil and the metal dish is in the opposite direction, makes metal dish rapid movement under powerful electrodynamic repulsion force effect; And the switch movable contact system through the quick stroke switch of connecting rod mechanical mechanism, the switch fixed contact is separated or closure fast.
Two of the object of the invention is to provide a kind of application to open the electrical equipment of switch contact system based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change.
To achieve these goals two, technical scheme two of the present invention is: a kind of electrical equipment of opening the switch contact system based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change of using comprises main circuit current excitation plate coil (A); Metal dish (B), connecting rod mechanical mechanism (C), switch contact system (H); Switch stationary contact bridge (D); Switch fixed contact (E), switch movable contact (F), switch movable contact bridge (G); Main circuit load (L); Main circuit power (U), described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D); Described switch movable contact bridge (G) is positioned at the top of switch stationary contact bridge (D); Described switch fixed contact (E) and switch movable contact (F) closure; The other end of described switch stationary contact bridge (D) is connected with an end of main circuit current excitation plate coil (A); The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
Further, the general voltage magnetizing coil in the line of described main circuit current excitation plate coil (A) footpath is thick, and the general voltage magnetizing coil of the number of turn is few.
Further, the material of described metal dish (B) is the metal of conduction.
When major break down electric current or short trouble take place when; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining; The eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect, and passes through connecting rod mechanical mechanism (C) the switch movable contact bridge (G) of stroke switch fast; Switch movable contact (F) is separated with switch fixed contact (E) fast, divide deenergizing.
Three of the object of the invention is to provide a kind of application to open the electrical equipment that the switch contact system seals in current limiting element based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change.
To achieve these goals three, technical scheme three of the present invention is: a kind of application is opened the electrical equipment that the switch contact system seals in current limiting element based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change, comprises main circuit current excitation plate coil (A); Metal dish (B), connecting rod mechanical mechanism (C), switch contact system (H); Current limiting element (I), switch stationary contact bridge (D), switch fixed contact (E); Switch movable contact (F); Switch movable contact bridge (G), main circuit load (L), main circuit power (U); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D) and an end of current limiting element (I); Described switch movable contact bridge (G) is positioned at the top of switch stationary contact bridge (D); Described switch fixed contact (E) and switch movable contact (F) closure; The other end of described switch stationary contact bridge (D) is connected with the other end of current limiting element (I), an end of main circuit current excitation plate coil (A) respectively; The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
Further, the general voltage magnetizing coil in the line of described main circuit current excitation plate coil (A) footpath is thick, and the general voltage magnetizing coil of the number of turn is few.
Further, the material of described metal dish (B) is the metal of conduction.
When major break down electric current or short trouble take place when; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining; The eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect, and passes through connecting rod mechanical mechanism (C) the switch movable contact bridge (G) of stroke switch fast; Switch movable contact (F) is separated with switch fixed contact (E) fast, and current limiting element (I) seals in the circuit limitations electric current.
Four of the object of the invention is to provide a kind of application to seal in the electrical equipment of current limiting element based on the quick electromagnetic repulsive force mechanism closed ground switch contact system of fault current energy and rate of change.
To achieve these goals four, technical scheme four of the present invention is: a kind of electrical equipment that seals in current limiting element based on the quick electromagnetic repulsive force mechanism closed ground switch contact system of fault current energy and rate of change of using comprises main circuit current excitation plate coil (A); Metal dish (B), connecting rod mechanical mechanism (C), switch contact system (H); Current limiting element (I), switch stationary contact bridge (D), switch fixed contact (E); Switch movable contact (F); Switch movable contact bridge (G), main circuit load (L), main circuit power (U); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D) and an end of current limiting element (I); Described switch stationary contact bridge (D) is positioned at the top of switch movable contact bridge (G); Described switch fixed contact (E) separates with switch movable contact (F); The other end of described switch stationary contact bridge (D) is connected with the other end of current limiting element (I), an end of main circuit current excitation plate coil (A) respectively; The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
Further, the general voltage magnetizing coil in the line of described main circuit current excitation plate coil (A) footpath is thick, and the general voltage magnetizing coil of the number of turn is few.
Further, the material of described metal dish (B) is the metal of conduction.
When major break down electric current or short trouble take place when; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining; The eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect, and passes through connecting rod mechanical mechanism (C) the switch movable contact bridge (G) of stroke switch fast; Make switch movable contact (F) and switch fixed contact (E) quick-make, avoided the prime switch to produce strong electric arc and caused danger and quick-make ground connection.
Description of drawings
Fig. 1 is the organigram of the embodiment of the invention.
Fig. 2 uses one structural representation for the embodiment of the invention.
Fig. 3 uses two structural representation for the embodiment of the invention.
Fig. 4 uses three structural representation for the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further elaboration.
As shown in Figure 1; A kind of quick electromagnetic repulsive force mechanism based on fault current energy and rate of change; Comprise main circuit current excitation plate coil (A), metal dish (B), connecting rod mechanical mechanism (C); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action.
In the present embodiment, the general voltage magnetizing coil in the line of described main circuit current excitation plate coil (A) footpath is thick, and the general voltage magnetizing coil of the number of turn is few.The material of described metal dish (B) is the metal of conduction.
When major break down electric current or short trouble take place when; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining, and the eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect; And pass through connecting rod mechanical mechanism (C) the switch movable contact system of stroke switch fast, the switch fixed contact is separated or closure fast.
Present embodiment uses one: as shown in Figure 2, a kind of electrical equipment of opening the switch contact system based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change of using comprises main circuit current excitation plate coil (A); Metal dish (B), connecting rod mechanical mechanism (C), switch contact system (H); Switch stationary contact bridge (D), switch fixed contact (E), switch movable contact (F); Switch movable contact bridge (G), main circuit load (L), main circuit power (U); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D); Described switch movable contact bridge (G) is positioned at the top of switch stationary contact bridge (D); Described switch fixed contact (E) and switch movable contact (F) closure; The other end of described switch stationary contact bridge (D) is connected with an end of main circuit current excitation plate coil (A); The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
The operation principle of present embodiment application one is following: when major break down electric current or short trouble take place; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining; The eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect, and passes through connecting rod mechanical mechanism (C) the switch movable contact bridge (G) of stroke switch fast; Switch movable contact (F) is separated with switch fixed contact (E) fast, divide deenergizing.
Present embodiment uses two: as shown in Figure 3, a kind of application is opened the electrical equipment that the switch contact system seals in current limiting element based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change, comprises main circuit current excitation plate coil (A); Metal dish (B), connecting rod mechanical mechanism (C), switch contact system (H); Current limiting element (I), switch stationary contact bridge (D), switch fixed contact (E); Switch movable contact (F); Switch movable contact bridge (G), main circuit load (L), main circuit power (U); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D) and an end of current limiting element (I); Described switch movable contact bridge (G) is positioned at the top of switch stationary contact bridge (D); Described switch fixed contact (E) and switch movable contact (F) closure; The other end of described switch stationary contact bridge (D) is connected with the other end of current limiting element (I), an end of main circuit current excitation plate coil (A) respectively; The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
The operation principle of present embodiment application two is following: when major break down electric current or short trouble take place; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining; The eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect, and passes through connecting rod mechanical mechanism (C) the switch movable contact bridge (G) of stroke switch fast; Switch movable contact (F) is separated with switch fixed contact (E) fast, and current limiting element (I) seals in the circuit limitations electric current.
Present embodiment uses three: as shown in Figure 4, a kind of electrical equipment that seals in current limiting element based on the quick electromagnetic repulsive force mechanism closed ground switch contact system of fault current energy and rate of change of using comprises main circuit current excitation plate coil (A); Metal dish (B), connecting rod mechanical mechanism (C), switch contact system (H); Current limiting element (I), switch stationary contact bridge (D), switch fixed contact (E); Switch movable contact (F); Switch movable contact bridge (G), main circuit load (L), main circuit power (U); Described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D) and an end of current limiting element (I); Described switch stationary contact bridge (D) is positioned at the top of switch movable contact bridge (G); Described switch fixed contact (E) separates with switch movable contact (F); The other end of described switch stationary contact bridge (D) is connected with the other end of current limiting element (I), an end of main circuit current excitation plate coil (A) respectively; The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
The operation principle of present embodiment application three is following: when major break down electric current or short trouble take place; Very big through main circuit current excitation plate coil (A) current value; The climbing of electric current is very high; Greatly climbing and huge fault current or short circuit current produce eddy current in the parallel placed metal dish in the top of main circuit current excitation plate coil (A) (B) lining; The eddy current that the electric current of main circuit current excitation plate coil (A) and metal dish (B) lining produce is in the opposite direction, makes metal dish (B) rapid movement under powerful electrodynamic repulsion force effect, and passes through connecting rod mechanical mechanism (C) the switch movable contact bridge (G) of stroke switch fast; Make switch movable contact (F) and switch fixed contact (E) quick-make, avoided the prime switch to produce strong electric arc and caused danger and quick-make ground connection.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. quick electromagnetic repulsive force mechanism based on fault current energy and rate of change; Comprise main circuit current excitation plate coil (A); Metal dish (B); Connecting rod mechanical mechanism (C) is characterized in that: described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action.
2. the quick electromagnetic repulsive force mechanism based on fault current energy and rate of change according to claim 1; It is characterized in that: the general voltage magnetizing coil in line footpath of described main circuit current excitation plate coil (A) is thick, and the general voltage magnetizing coil of the number of turn is few.
3. the quick electromagnetic repulsive force mechanism based on fault current energy and rate of change according to claim 1 and 2 is characterized in that: the material of described metal dish (B) is the metal of conduction.
4. an application is opened the electrical equipment of switch contact system based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change, comprises main circuit current excitation plate coil (A), metal dish (B); Connecting rod mechanical mechanism (C), switch contact system (H), switch stationary contact bridge (D); Switch fixed contact (E), switch movable contact (F), switch movable contact bridge (G); Main circuit load (L); Main circuit power (U) is characterized in that: described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D); Described switch movable contact bridge (G) is positioned at the top of switch stationary contact bridge (D); Described switch fixed contact (E) and switch movable contact (F) closure; The other end of described switch stationary contact bridge (D) is connected with an end of main circuit current excitation plate coil (A); The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
5. the electrical equipment of switch contact system is opened in application according to claim 4 based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change; It is characterized in that: the general voltage magnetizing coil in line footpath of described main circuit current excitation plate coil (A) is thick, and the general voltage magnetizing coil of the number of turn is few.
6. an application is opened the electrical equipment that the switch contact system seals in current limiting element based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change, comprises main circuit current excitation plate coil (A), metal dish (B); Connecting rod mechanical mechanism (C), switch contact system (H), current limiting element (I); Switch stationary contact bridge (D); Switch fixed contact (E), switch movable contact (F), switch movable contact bridge (G); Main circuit load (L); Main circuit power (U) is characterized in that: described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D) and an end of current limiting element (I); Described switch movable contact bridge (G) is positioned at the top of switch stationary contact bridge (D); Described switch fixed contact (E) and switch movable contact (F) closure; The other end of described switch stationary contact bridge (D) is connected with the other end of current limiting element (I), an end of main circuit current excitation plate coil (A) respectively; The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
7. application according to claim 6 is opened the electrical equipment that the switch contact system seals in current limiting element based on the quick electromagnetic repulsive force mechanism of fault current energy and rate of change; It is characterized in that: the general voltage magnetizing coil in line footpath of described main circuit current excitation plate coil (A) is thick, and the general voltage magnetizing coil of the number of turn is few.
8. an application seals in the electrical equipment of current limiting element based on the quick electromagnetic repulsive force mechanism closed ground switch contact system of fault current energy and rate of change, comprises main circuit current excitation plate coil (A), metal dish (B); Connecting rod mechanical mechanism (C), switch contact system (H), current limiting element (I); Switch stationary contact bridge (D); Switch fixed contact (E), switch movable contact (F), switch movable contact bridge (G); Main circuit load (L); Main circuit power (U) is characterized in that: described metal dish (B) is placed in parallel in the top of main circuit current excitation plate coil (A), and described metal dish (B) directly is connected with connecting rod mechanical mechanism (C) and synchronization action; Described connecting rod mechanical mechanism (C) heads on the switch movable contact bridge (G) of switch contact system (H); One end of described main circuit power (U) connects an end of switch stationary contact bridge (D) and an end of current limiting element (I); Described switch stationary contact bridge (D) is positioned at the top of switch movable contact bridge (G); Described switch fixed contact (E) separates with switch movable contact (F); The other end of described switch stationary contact bridge (D) is connected with the other end of current limiting element (I), an end of main circuit current excitation plate coil (A) respectively; The other end of described main circuit current excitation plate coil (A) is connected to an end of main circuit load (L), and the other end of described main circuit load (L) is connected with the other end of main circuit power (U).
9. application according to claim 8 seals in the electrical equipment of current limiting element based on the quick electromagnetic repulsive force mechanism closed ground switch contact system of fault current energy and rate of change; It is characterized in that: the general voltage magnetizing coil in line footpath of described main circuit current excitation plate coil (A) is thick, and the general voltage magnetizing coil of the number of turn is few.
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| CN201210250699.8A CN102751116B (en) | 2012-07-19 | 2012-07-19 | Quick electromagnetic repulsion mechanism based on fault current energy and change rate and application of quick electromagnetic repulsion mechanism |
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| CN105513844A (en) * | 2015-12-22 | 2016-04-20 | 福州大学 | Quick electromagnetic pull mechanism based on fault current energy and change rate and application thereof |
| CN106463283A (en) * | 2014-05-19 | 2017-02-22 | Abb瑞士股份有限公司 | High speed limiting electrical switchgear device |
| CN106601545A (en) * | 2017-02-27 | 2017-04-26 | 大连理工大学 | Novel vacuum interrupter structure |
| CN112180287A (en) * | 2019-07-05 | 2021-01-05 | 武汉理工大学 | Magnetic bearing coil fault on-line detection method |
| CN112821348A (en) * | 2021-01-28 | 2021-05-18 | 中国人民解放军海军工程大学 | Short-circuit current self-driven current-limiting direct current breaker |
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| CN106463283B (en) * | 2014-05-19 | 2018-12-21 | Abb瑞士股份有限公司 | High speed limitation electric switch equipment |
| CN105513844A (en) * | 2015-12-22 | 2016-04-20 | 福州大学 | Quick electromagnetic pull mechanism based on fault current energy and change rate and application thereof |
| CN105513844B (en) * | 2015-12-22 | 2018-04-13 | 福州大学 | Based on fault current energy and the quick electromagnetic tensile machine of change rate and its application |
| CN106601545A (en) * | 2017-02-27 | 2017-04-26 | 大连理工大学 | Novel vacuum interrupter structure |
| CN112180287A (en) * | 2019-07-05 | 2021-01-05 | 武汉理工大学 | Magnetic bearing coil fault on-line detection method |
| CN112821348A (en) * | 2021-01-28 | 2021-05-18 | 中国人民解放军海军工程大学 | Short-circuit current self-driven current-limiting direct current breaker |
| CN112951651A (en) * | 2021-01-28 | 2021-06-11 | 中国人民解放军海军工程大学 | Short-circuit current self-driven quick switch |
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|---|---|
| CN102751116B (en) | 2014-12-03 |
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