CN110556818A - protection structure for preventing AC distribution bus bar connection contactor from being disconnected due to fault - Google Patents
protection structure for preventing AC distribution bus bar connection contactor from being disconnected due to fault Download PDFInfo
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- CN110556818A CN110556818A CN201810549289.0A CN201810549289A CN110556818A CN 110556818 A CN110556818 A CN 110556818A CN 201810549289 A CN201810549289 A CN 201810549289A CN 110556818 A CN110556818 A CN 110556818A
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- bus bar
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
Abstract
the invention discloses a protection structure for an AC distribution bus bar connecting contactor which can not be disconnected due to faults.A bus bar power controller L BPCU acquires information that an AC distribution bus bar connecting contactor LacT can not be disconnected for protection due to faults, wherein the information acquisition points are a disconnection instruction of the LacT, auxiliary contact information of the LacT, L115VAC bus bar voltage (3 phases) and an ATU bus bar A-phase voltage. The invention has the beneficial effect of matching with the realization of the protection and fault isolation functions of the BPCU.
Description
Technical Field
the invention relates to a protection structure for an alternating current distribution bus bar connection contactor of a single-channel multi-electric-aircraft bus bar power controller, which cannot be disconnected due to faults.
Background
The Bus Power Control Unit (BPCU) has two functions, one is to realize load-oriented Power transmission through Control of the aircraft grid Power switch under normal conditions, and the other is to provide protection for the distribution Bus and the Power elements.
the power grid configuration of the traditional airplane is simple, and the protection and control functions of the BPCU are not complicated. Under the multi-electric airplane system, the BPCU has the conventional control and protection functions and also needs to be combined with the GCU to realize fault location and isolation under the fault condition. The invention provides a protection function design for an alternating current distribution bus bar connecting contactor which cannot be disconnected due to faults so as to be matched with the realization of the protection and fault isolation functions of a BPCU. Including fault diagnosis and what actions should be taken in the event of a fault.
Disclosure of Invention
the invention provides a protection structure for an alternating current distribution bus bar connecting contactor of a single-channel multi-electric-aircraft bus bar power controller, wherein the alternating current distribution bus bar connecting contactor cannot be disconnected due to faults, and an information acquisition point of an L BPCU for the alternating current distribution bus bar connecting contactor LacT which cannot be disconnected due to faults is a disconnection instruction of the LacT, auxiliary contact information of the LacT, L115VAC bus bar voltage (3 phases) and an ATU bus bar A-phase voltage.
In order to achieve the purpose, the technical scheme of the invention is as follows: the protection structure for the AC distribution bus bar connection contactor of the single-channel multi-electric aircraft bus bar power controller which can not be disconnected due to faults is characterized by comprising,
the main generator GEN L is connected with the first end of the circuit breaker L GCB, and the second end of the circuit breaker L GCB is connected with the Bus bar L235 VAC Bus;
The GEN R of the main generator is connected with the first end of the circuit breaker R GCB, and the second end of the circuit breaker R GCB is connected with the Bus bar R235 VAC Bus;
the auxiliary generator APU GEN is connected with the first end of the circuit breaker APB, the Bus bar L235 VAC Bus is connected with the first end of the contactor L BTB, the Bus bar R235 VAC Bus is connected with the first end of the contactor R BTB, and the second end of the contactor APB is connected with the second end of the contactor L BTB and the second end of the contactor R BTB respectively;
The Bus bar L235 VAC Bus is connected with a first end of a contactor L ATUC, a second end of the contactor L ATUC is connected with an electric energy conversion device L ATU, the electric energy conversion device L ATU is connected with a first end of a contactor L BSB, and a second end of the contactor L BSB is connected with the Bus bar L115VAC Bus;
the Bus bar R235 VAC Bus is connected with a first end of a contactor R ATUC, a second end of the contactor R ATUC is connected with an electric energy conversion device R ATU, the electric energy conversion device R ATU is connected with a first end of a contactor R BSB, and a second end of the contactor R BSB is connected with the Bus bar R115 VAC Bus;
a ground power supply L FWD EP is connected with a first end of a contactor L EPC, and a second end of the contactor L EPC is connected with a first end of a contactor L BSB;
a ground power supply R FWD EP is connected with a first end of a contactor R EPC, and a second end of the contactor R EPC is connected with a first end of a contactor R BSB;
The Bus bar L235 VAC Bus is connected with the first end of the contactor LacT, the second end of the contactor LacT is connected with the first end of the contactor RacT, and the second end of the contactor RacT is connected with the Bus bar R235 VAC Bus;
the second end of the contactor L ATUC is connected with the first end of the contactor L TRU Rly, the second end of the contactor L TRU Rly is connected with the power conversion device TRU L, and the power conversion device TRU L is connected with the Bus bar L28 VDC Bus;
the second end of the contactor R ATUC is connected with the first end of the contactor R TRU Rly, the second end of the contactor R TRU Rly is connected with the power conversion device TRU R, and the power conversion device TRU R is connected with the Bus bar R28 VDC Bus;
the Bus bar L28 VDC Bus is connected with a first end of a contactor LdcT, a second end of the contactor LdcT is connected with a first end of a contactor RdcT, and a second end of the contactor RdcT is connected with the Bus bar R28 VDC Bus;
The second end of the contactor L ATUC is connected with the first end of the contactor E1 TRU ISO Rly, the second end of the contactor E1 TRU ISO Rly is respectively connected with the first ends of a power conversion device TRU 1 and a contactor E1 TRU Rly, the power conversion device TRU 1 is further connected with the first end of a Bus bar ESS 128 VDC Bus, the second end of the contactor ESS ISO Rly is connected with a Bus bar ESS 235VAC Bus, the Bus bar ESS 235VAC Bus is connected with a power conversion device TRU 2, and the power conversion device TRU E2 is further connected with the Bus bar ESS 228 VDC Bus;
The generator GEN RAT is connected with a first end of a contactor RCB, and a second end of the contactor RCB is connected with a Bus bar ESS 235VAC Bus;
bus ESS 128 VDC Bus is connected to the first terminal of contact E1T, the second terminal of contact E1T is connected to the first terminal of contact E2T, and the second terminal of contact E2T is connected to Bus ESS 228 VDC Bus;
Bus ESS 128 VDC Bus is connected to a first terminal of contactor MBR, and a second terminal of contactor MBR is connected to Bus Hot BB 1;
the bus bar Hot BB2 is connected with a first end of a contactor SPUC, a second end of the contactor SPUC is connected with an SPU, the SPU is connected with a first end of a contactor SPUB, and a second end of the contactor SPUB is connected with an ATRU R;
The Bus bar L235 VAC Bus is connected with a first end of a contactor L ATRUC, a second end of the contactor L ATRUC is connected with an autotransformer rectifier ATRU L, and the autotransformer rectifier ATRU L is connected with the Bus bar L270 VDC Bus;
The Bus bar R235 VAC Bus is connected with the first end of the contactor R ATRUC, the second end of the contactor R ATRUC is connected with the autotransformer rectifier ATRU R, and the autotransformer rectifier ATRU R is connected with the Bus bar R270 VDC Bus;
An external power supply L AFT EP is connected with a first end of a contactor L AEPC, and a second end of the contactor L AEPC is connected with an autotransformer rectifier ATRU L;
the bus bar power controller L BPCU sets an opening command of LacT, auxiliary contact information of LacT, L115VAC bus bar voltage (3 phase), and ATU bus bar a-phase voltage as an information acquisition point at which the ac distribution bus bar connection contactor LacT cannot be protected from being opened due to a fault.
The power supply of the main generator GEN L and the power supply of the main generator GEN R are both variable frequency generators with rated power of 225kVA and rated voltage of 235 VAC; the auxiliary generator APU GEN is a variable frequency generator with rated power of 200kVA and rated voltage of 235 VAC; the generator GEN RAT is a variable frequency generator with rated power of 50kVA and rated voltage of 235 VAC; rated voltages of the ground power supply L FWDEP, the ground power supply R FWD EP and the third external power supply L AFT EP are 115 VAC; rated power of the ATRU L and the ATRU R is 150kVA, rated capacity of the ATU and the ATU is 60kVA, and rated output current of the TRU L, the TRU R, the TRU E1 and the TRU E2 is 240A; both the battery Main BAT and the battery APUBAT are batteries having a rated voltage of 28VDC and a capacity of 75 Ah.
compared with the prior art, the invention has the beneficial effects that:
1. the variable frequency generator is suitable for 235 VAC.
2. introducing a 235VAC bus bar to replace the 115VAC bus bar of a conventional aircraft, the power rating increases.
3. a 270VDC voltage level was introduced for speed regulation of large motors (air conditioning compressors, etc.).
4. The number of external power supply sockets is changed from 1 socket of a traditional airplane to 2, and meanwhile, the voltage class and the capacity of the emergency power supply RAT are increased from the original 115VAC 30kVA to 235VAC 50 kVA.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantageous effects brought by the technical features of the technical solutions described above, other technical problems solved by the present invention, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be described in further detail with reference to the accompanying drawings.
drawings
fig. 1 shows a protection controlled contactor (shown as a circle in the figure) in which an ac distribution busbar connecting contactor cannot be opened due to a fault.
fig. 2 is a protection control logic for an ac distribution busbar joint contactor that cannot be opened due to a fault.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and drawings. Here, the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, a protection architecture for a new single-channel multi-power aircraft bus power controller ac distribution bus tie contactor that fails to open due to a fault is shown.
The main generator GEN L is connected with the first end of the circuit breaker L GCB, and the second end of the circuit breaker L GCB is connected with the Bus bar L235 VAC Bus;
the GEN R of the main generator is connected with the first end of the circuit breaker R GCB, and the second end of the circuit breaker R GCB is connected with the Bus bar R235 VAC Bus;
The auxiliary generator APU GEN is connected with the first end of the circuit breaker APB, the Bus bar L235 VAC Bus is connected with the first end of the contactor L BTB, the Bus bar R235 VAC Bus is connected with the first end of the contactor R BTB, and the second end of the contactor APB is connected with the second end of the contactor L BTB and the second end of the contactor R BTB respectively;
the Bus bar L235 VAC Bus is connected with a first end of a contactor L ATUC, a second end of the contactor L ATUC is connected with an electric energy conversion device L ATU, the electric energy conversion device L ATU is connected with a first end of a contactor L BSB, and a second end of the contactor L BSB is connected with the Bus bar L115VAC Bus;
the Bus bar R235 VAC Bus is connected with a first end of a contactor R ATUC, a second end of the contactor R ATUC is connected with an electric energy conversion device R ATU, the electric energy conversion device R ATU is connected with a first end of a contactor R BSB, and a second end of the contactor R BSB is connected with the Bus bar R115 VAC Bus;
a ground power supply L FWD EP is connected with a first end of a contactor L EPC, and a second end of the contactor L EPC is connected with a first end of a contactor L BSB;
a ground power supply R FWD EP is connected with a first end of a contactor R EPC, and a second end of the contactor R EPC is connected with a first end of a contactor R BSB;
the Bus bar L235 VAC Bus is connected with the first end of the contactor LacT, the second end of the contactor LacT is connected with the first end of the contactor RacT, and the second end of the contactor RacT is connected with the Bus bar R235 VAC Bus;
The second end of the contactor L ATUC is connected with the first end of the contactor L TRU Rly, the second end of the contactor L TRU Rly is connected with the power conversion device TRU L, and the power conversion device TRU L is connected with the Bus bar L28 VDC Bus;
The second end of the contactor R ATUC is connected with the first end of the contactor R TRU Rly, the second end of the contactor R TRU Rly is connected with the power conversion device TRU R, and the power conversion device TRU R is connected with the Bus bar R28 VDC Bus;
the Bus bar L28 VDC Bus is connected with a first end of a contactor LdcT, a second end of the contactor LdcT is connected with a first end of a contactor RdcT, and a second end of the contactor RdcT is connected with the Bus bar R28 VDC Bus;
The second end of the contactor L ATUC is connected with the first end of the contactor E1 TRU ISO Rly, the second end of the contactor E1 TRU ISO Rly is respectively connected with the first ends of a power conversion device TRU 1 and a contactor E1 TRU Rly, the power conversion device TRU 1 is further connected with the first end of a Bus bar ESS 128 VDC Bus, the second end of the contactor ESS ISO Rly is connected with a Bus bar ESS 235VAC Bus, the Bus bar ESS 235VAC Bus is connected with a power conversion device TRU 2, and the power conversion device TRU E2 is further connected with the Bus bar ESS 228 VDC Bus;
the generator GEN RAT is connected with a first end of a contactor RCB, and a second end of the contactor RCB is connected with a Bus bar ESS 235VAC Bus;
Bus ESS 128 VDC Bus is connected to the first terminal of contact E1T, the second terminal of contact E1T is connected to the first terminal of contact E2T, and the second terminal of contact E2T is connected to Bus ESS 228 VDC Bus;
bus ESS 128 VDC Bus is connected to a first terminal of contactor MBR, and a second terminal of contactor MBR is connected to Bus Hot BB 1;
The bus bar Hot BB2 is connected with a first end of a contactor SPUC, a second end of the contactor SPUC is connected with an SPU, the SPU is connected with a first end of a contactor SPUB, and a second end of the contactor SPUB is connected with an ATRU R;
the Bus bar L235 VAC Bus is connected with a first end of a contactor L ATRUC, a second end of the contactor L ATRUC is connected with an autotransformer rectifier ATRU L, and the autotransformer rectifier ATRU L is connected with the Bus bar L270 VDC Bus;
the Bus bar R235 VAC Bus is connected with the first end of the contactor R ATRUC, the second end of the contactor R ATRUC is connected with the autotransformer rectifier ATRU R, and the autotransformer rectifier ATRU R is connected with the Bus bar R270 VDC Bus;
an external power supply L AFT EP is connected with a first end of a contactor L AEPC, and a second end of the contactor L AEPC is connected with an autotransformer rectifier ATRU L;
The generator bus bar voltage of the power supply system is 235VAC, and the bus bar voltages of the secondary distribution are 115VAC and 28VDC, respectively. The left main generator and the right main generator are respectively connected with an L235 VAC Bus and an R235 VAC Bus and are respectively converted into a secondary power supply of 115VAC and 28VDC through an L ATU115VAC, a TRU L28 VDC, an R ATU115VAC and a TRU R28 VDC to supply power for the L115VAC Bus, the L28 VDC Bus, the R115 VAC Bus and the R28 VDC Bus. Contactors L ATUC and R ATUC are arranged between the Bus bar L/R235 VAC Bus and the Bus bar L/R ATU115VAC, and are used for respectively controlling the connection and disconnection of power inputs of the two autotransformers and providing protection in the case of overload. Similarly, there are contacts L TRU Rly and R TRU Rly at the input terminals of TRU L28 VDC and TRU R28 VDC to control the power input and provide protection.
Two self-coupling transformer rectifiers of ATRU L270 VDC and ATRU R270 VDC are respectively connected to the L/R235 VAC Bus to supply power to the corresponding L270 VDC Bus and R270 VDC Bus. There are corresponding contactors, L ATRUC and R ATRUC, between the 235VAC Bus and ATRU to control the turn on and off of the ATRU power input and to provide protection in the event of an overload condition.
The rated capacity of each ATRU is 150kVA, the rated capacity of each ATU is 60kVA, and the rated output current of each TRU is 240A.
the controlled object comprises LacT, RacT and R BSB which are respectively used for connecting the L/R115 VAC Bus and the right external power supply R FWD EP.
The information acquisition point of the L BPCU that cannot open the protection of LacT due to a failure is an open command of LacT, auxiliary contact information of LacT, L115VAC bus bar voltage (3 phase), and ATU bus bar a-phase voltage.
The L BPCU will implement LacT protection from failure when the following conditions are met:
1) there is a LacT disconnect instruction;
2) the LacT auxiliary contacts indicate closed, or the L115VAC bus is in power transfer, no failure of the L115VAC to open the UV fault due to a fault has occurred, or;
3) the LacT auxiliary contact indicates closed, or the ATU bus bar is transmitting power, and no a-phase failure to open the UV condition has occurred.
after the LacT fail open condition occurs, the L BPCU will send a "LacT fail open trip request" to the R BPCU within 2s, the response of which is to open and latch the RacT and R BSB.
The inability of LacT to open the command due to a fault is only activated if the power transmission status of the L115VAC bus or the L ATU bus becomes false and the command of LacT is open.
the aforementioned failure of the L115VAC BUS to disconnect the UV condition due to a fault means: the lowest phase voltage of the L115VAC bus bar is less than or equal to 100 Vrms.
when the L115VAC BUS lowest phase voltage recovers above 102Vrms, the failure of the L115VAC BUS to disconnect the UV condition no longer exists.
The aforementioned inability of the ATU bus bar to break the UV condition due to a fault means: the lowest phase voltage of the ATU bus bar is less than or equal to 100 Vrms.
when the ATU bus minimum phase voltage recovers above 102Vrms, the inability of the ATU bus to open due to a fault UV condition no longer exists.
After the condition that the LacT cannot be disconnected due to the fault disappears, the RacT or the R BSB can be reset by operating the corresponding switch of the unit display control interface. The specific method is to rotate the corresponding switch from the AUTO position to the ISOLATE position and then back to the AUTO position.
LacT cannot open the protected control contactor due to a fault is shown in FIG. 1, and the protection control logic is shown in FIG. 2.
the foregoing merely represents embodiments of the present invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (2)
1. The protection structure for preventing the connection contactor of AC distribution bus from being disconnected due to fault is characterized by comprising,
The main generator GEN L is connected with the first end of the circuit breaker L GCB, and the second end of the circuit breaker L GCB is connected with the Bus bar L235 VAC Bus;
The GEN R of the main generator is connected with the first end of the circuit breaker R GCB, and the second end of the circuit breaker R GCB is connected with the Bus bar R235 VAC Bus;
The auxiliary generator APU GEN is connected with the first end of the circuit breaker APB, the Bus bar L235 VAC Bus is connected with the first end of the contactor L BTB, the Bus bar R235 VAC Bus is connected with the first end of the contactor R BTB, and the second end of the contactor APB is connected with the second end of the contactor L BTB and the second end of the contactor R BTB respectively;
the Bus bar L235 VAC Bus is connected with a first end of a contactor L ATUC, a second end of the contactor L ATUC is connected with an electric energy conversion device L ATU, the electric energy conversion device L ATU is connected with a first end of a contactor L BSB, and a second end of the contactor L BSB is connected with the Bus bar L115VAC Bus;
the Bus bar R235 VAC Bus is connected with a first end of a contactor R ATUC, a second end of the contactor R ATUC is connected with an electric energy conversion device R ATU, the electric energy conversion device R ATU is connected with a first end of a contactor R BSB, and a second end of the contactor R BSB is connected with the Bus bar R115 VAC Bus;
a ground power supply L FWD EP is connected with a first end of a contactor L EPC, and a second end of the contactor L EPC is connected with a first end of a contactor L BSB;
A ground power supply R FWD EP is connected with a first end of a contactor R EPC, and a second end of the contactor R EPC is connected with a first end of a contactor R BSB;
The Bus bar L235 VAC Bus is connected with the first end of the contactor LacT, the second end of the contactor LacT is connected with the first end of the contactor RacT, and the second end of the contactor RacT is connected with the Bus bar R235 VAC Bus;
the second end of the contactor L ATUC is connected with the first end of the contactor L TRU Rly, the second end of the contactor L TRU Rly is connected with the power conversion device TRU L, and the power conversion device TRU L is connected with the Bus bar L28 VDC Bus;
the second end of the contactor R ATUC is connected with the first end of the contactor R TRU Rly, the second end of the contactor R TRU Rly is connected with the power conversion device TRU R, and the power conversion device TRU R is connected with the Bus bar R28 VDC Bus;
The Bus bar L28 VDC Bus is connected with a first end of a contactor LdcT, a second end of the contactor LdcT is connected with a first end of a contactor RdcT, and a second end of the contactor RdcT is connected with the Bus bar R28 VDC Bus;
The second end of the contactor L ATUC is connected with the first end of the contactor E1 TRU ISO Rly, the second end of the contactor E1 TRU ISO Rly is respectively connected with the first ends of a power conversion device TRU 1 and a contactor E1 TRU Rly, the power conversion device TRU 1 is further connected with the first end of a Bus bar ESS 128 VDC Bus, the second end of the contactor ESS ISO Rly is connected with a Bus bar ESS 235VAC Bus, the Bus bar ESS 235VAC Bus is connected with a power conversion device TRU 2, and the power conversion device TRU E2 is further connected with the Bus bar ESS 228 VDC Bus;
the generator GEN RAT is connected with a first end of a contactor RCB, and a second end of the contactor RCB is connected with a Bus bar ESS 235VAC Bus;
bus ESS 128 VDC Bus is connected to the first terminal of contact E1T, the second terminal of contact E1T is connected to the first terminal of contact E2T, and the second terminal of contact E2T is connected to Bus ESS 228 VDC Bus;
Bus ESS 128 VDC Bus is connected to a first terminal of contactor MBR, and a second terminal of contactor MBR is connected to Bus Hot BB 1;
The bus bar Hot BB2 is connected with a first end of a contactor SPUC, a second end of the contactor SPUC is connected with an SPU, the SPU is connected with a first end of a contactor SPUB, and a second end of the contactor SPUB is connected with an ATRU R;
the Bus bar L235 VAC Bus is connected with a first end of a contactor L ATRUC, a second end of the contactor L ATRUC is connected with an autotransformer rectifier ATRU L, and the autotransformer rectifier ATRU L is connected with the Bus bar L270 VDC Bus;
the Bus bar R235 VAC Bus is connected with the first end of the contactor R ATRUC, the second end of the contactor R ATRUC is connected with the autotransformer rectifier ATRU R, and the autotransformer rectifier ATRU R is connected with the Bus bar R270 VDC Bus;
an external power supply L AFT EP is connected with a first end of a contactor L AEPC, and a second end of the contactor L AEPC is connected with an autotransformer rectifier ATRU L;
the bus bar power controller L BPCU sets an opening command of LacT, auxiliary contact information of LacT, L115VAC bus bar voltage (3 phase), and ATU bus bar a-phase voltage as an information acquisition point at which the ac distribution bus bar connection contactor LacT cannot be protected from being opened due to a fault.
2. the ac distribution bar linkage contactor protection architecture against failure to open according to claim 1, wherein the main generator GEN L supply and the main generator GEN R are variable frequency generators rated at 225kVA and rated at 235 VAC; the auxiliary generator APU GEN is a variable frequency generator with rated power of 200kVA and rated voltage of 235 VAC; the generator GEN RAT is a variable frequency generator with rated power of 50kVA and rated voltage of 235 VAC; rated voltages of the ground power supply LFWD EP, the ground power supply R FWD EP and the third external power supply L AFT EP are 115 VAC; rated power of the ATRU L and the ATRU R is 150kVA, rated capacity of the ATU and the ATU is 60kVA, and rated output current of the TRU L, the TRU R, the TRU E1 and the TRU E2 is 240A; both the battery Main BAT and the battery APUBAT are batteries having a rated voltage of 28VDC and a capacity of 75 Ah.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549289.0A CN110556818B (en) | 2018-05-31 | 2018-05-31 | Protection structure for connecting contactor of AC distribution bus bar and incapable of being disconnected due to fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549289.0A CN110556818B (en) | 2018-05-31 | 2018-05-31 | Protection structure for connecting contactor of AC distribution bus bar and incapable of being disconnected due to fault |
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| Publication Number | Publication Date |
|---|---|
| CN110556818A true CN110556818A (en) | 2019-12-10 |
| CN110556818B CN110556818B (en) | 2023-08-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202488101U (en) * | 2012-03-09 | 2012-10-10 | 陕西飞机工业（集团）有限公司 | Control protection device of alternating-current generator |
| JP2015503898A (en) * | 2011-12-30 | 2015-02-02 | ゼネラル・エレクトリック・カンパニイ | Damage protection for power supply systems |
| CN105024452A (en) * | 2015-08-11 | 2015-11-04 | 中国航空工业集团公司西安飞机设计研究所 | DC uninterrupted power supply method and line |
| CN105549424A (en) * | 2016-01-06 | 2016-05-04 | 南京航空航天大学 | Wide-body passenger plane busbar power controller simulation system and method |
-
2018
- 2018-05-31 CN CN201810549289.0A patent/CN110556818B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015503898A (en) * | 2011-12-30 | 2015-02-02 | ゼネラル・エレクトリック・カンパニイ | Damage protection for power supply systems |
| CN202488101U (en) * | 2012-03-09 | 2012-10-10 | 陕西飞机工业（集团）有限公司 | Control protection device of alternating-current generator |
| CN105024452A (en) * | 2015-08-11 | 2015-11-04 | 中国航空工业集团公司西安飞机设计研究所 | DC uninterrupted power supply method and line |
| CN105549424A (en) * | 2016-01-06 | 2016-05-04 | 南京航空航天大学 | Wide-body passenger plane busbar power controller simulation system and method |
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| CN110556818B (en) | 2023-08-08 |
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