CN110556814A - power input priority structure of left and right normal direct current distribution bus bar of single-channel multi-electric-aircraft power supply system - Google Patents
power input priority structure of left and right normal direct current distribution bus bar of single-channel multi-electric-aircraft power supply system Download PDFInfo
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- CN110556814A CN110556814A CN201810551410.3A CN201810551410A CN110556814A CN 110556814 A CN110556814 A CN 110556814A CN 201810551410 A CN201810551410 A CN 201810551410A CN 110556814 A CN110556814 A CN 110556814A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H02J1/10—Parallel operation of dc sources
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Abstract
the invention discloses a power input priority structure of a left and right normal direct current distribution Bus bar of a single-channel multi-power-plane power supply system, which comprises a Bus bar R28VDC Bus, wherein the Bus bar R28VDC Bus is selectively powered by one of a power conversion device TRU R, a Bus bar L28 VDC Bus, a ground power supply R FWD EP, a ground power supply L FWD EP and a Bus bar R235VAC Bus; and a Bus bar L28 VDC Bus selectively powered by one of the power conversion device TRU L, the Bus bar R28VDC Bus, the ground power R FWD EP, the ground power L FWD EP, and the Bus bar L235 VAC Bus. The method has the advantages that the setting of the priority better manages the power input of the Bus bar R28VDC Bus and the Bus bar L28 VDC Bus.
Description
Technical Field
The invention relates to a power input priority structure of a left and right normal direct current power distribution bus bar of a single-channel multi-electric-aircraft power supply system.
background
The power supply system of the single-channel multi-electric airplane comprises a left variable-frequency main starting generator GEN L and a right variable-frequency main starting generator GEN R with the rated power of 225kVA, an APU starting generator with the rated power of 200kVA and an RAT generator with the rated power of 50 kVA. There are also three external power sources, L FWD EP, R FWD EP and L AFT EP, respectively, the outlets of each of which can support a maximum of 90kVA of power. The rated voltages of the main starter generator, the APU starter generator and the RAT generator are all 235VAC, and the rated voltages of the three external power supplies are 115 VAC.
The power system has left and right normal dc distribution Bus bars L28 VDC Bus and R28VDC Bus, which have multiple possible power input sources, which need to be prioritized since only one power source can be received at a time. When a plurality of power sources exist simultaneously, the power source with high access priority is selected.
Disclosure of Invention
the invention aims to solve the technical problem of setting the priority of a normal direct current power distribution bus bar, and provides a novel structure for the power input priority of a left and right normal direct current power distribution bus bar of a single-channel multi-power-plane power supply system.
In order to achieve the purpose, the technical scheme of the invention is as follows: a power input priority structure of a left and right normal direct current distribution bus bar of a single-channel multi-electric-aircraft power supply system comprises,
a Bus bar R28VDC Bus selectively powered by one of the power conversion device TRU R, the Bus bar L28 VDC Bus, the ground power supply R FWD EP, the ground power supply L FWD EP, and the Bus bar R235VAC Bus; the power conversion device TRU and the Bus bar L28 VDC Bus are direct power sources, and the ground power source R FWD EP, the ground power source L FWD EP and the Bus bar R235VAC Bus are indirect power sources; the power supply priority of the direct power source is higher than that of the indirect power source; in the direct power source, the power supply priority of the power conversion device TRU R is higher than that of the Bus bar L28 VDC Bus; in the indirect power source, the power supply priority of a ground power supply R FWD EP, the power supply priority of a ground power supply L FWD EP and the power supply priority of a Bus bar R235VAC Bus are the same; and the number of the first and second groups,
A Bus bar L28 VDC Bus selectively powered by one of the power conversion device TRU L, the Bus bar R28VDC Bus, the ground power supply R FWD EP, the ground power supply L FWD EP, and the Bus bar L235 VAC Bus; the system comprises a power conversion device TRU L, a Bus bar R28VDC Bus, a ground power supply R FWD EP, a ground power supply L FWD EP and a Bus bar L235 VAC Bus, wherein the power conversion device TRU L and the Bus bar R28VDC Bus are direct power sources, and the ground power supply R FWD EP, the ground power supply L FWD EP and the Bus bar L235 VAC Bus are indirect; the power supply priority of the direct power source is higher than that of the indirect power source; in the direct power source, the power supply priority of the power conversion device TRU L is higher than that of the Bus bar R28VDC Bus; in the indirect power source, the ground power source R FWD EP, the ground power source L FWD EP, and the Bus bar L235 VAC Bus have the same power supply priority.
As a preferred scheme of a power input priority structure of a left and right normal direct current power distribution Bus bar of a single-channel multi-electric-aircraft power supply system, if three indirect power sources of a Bus bar R28VDC Bus exist at the same time, the power source which is made ON last time is optimal; if three indirect power sources of the Bus bar L28 VDC Bus are present at the same time, the last power source commanded ON is optimal.
as a preferred scheme of a power input priority structure of a left and right normal direct current distribution Bus bar of a single-channel multi-power-plane power supply system, for a Bus bar R28VDC Bus, the power supply priority of a ground power supply R FWD EP intermediate path power conversion device TRU R is higher than an access Bus bar L28 VDC Bus, the power supply priority of a ground power supply L FWD EP intermediate path power conversion device TRU R is higher than the access Bus bar L28 VDC Bus, and the power supply priority of a Bus bar R235VAC Bus intermediate path power conversion device TRU R is higher than the access Bus bar L28 VDC Bus; for the Bus bar L28 VDC Bus, the power supply priority of the ground power supply L FWD EP intermediate path power conversion device TRU L is higher than that of the path Bus bar R28VDC Bus, and the power supply priority of the Bus bar L235 VAC Bus intermediate path power conversion device TRU L is higher than that of the path Bus bar R28VDC Bus.
The optimal scheme of the power input priority structure of the left and right normal direct current distribution bus bar of the single-channel multi-power-plane power supply system also comprises a contactor L GCB, a contactor R GCB, a contactor L BTB, a contactor APB and a contactor R BTB; the first end of the contactor L GCB is connected with the main generator GEN L, and the second end of the contactor L GCB is connected with the bus bar L115 VACBus; the first end of the contactor R GCB is connected with a main generator GEN R, and the second end of the contactor RGCB is connected with a Bus bar R115 VAC Bus; contactor L BTB's first end links to each other with busbar L115VAC Bus, and contactor APB's first end links to each other with auxiliary generator APU GEN, and contactor R BTB's first end links to each other with busbar R115 VAC Bus, and contactor LBTB's second end links to each other with contactor ATB's second end and contactor R BTB's second end respectively.
As a preferred scheme of the power input priority structure of the left and right normal direct current distribution bus bar of the single-channel multi-electric-aircraft power supply system, the power input priority structure further comprises a contactor L ATUC, an electric energy conversion device L ATU, a contactor L BSB, a contactor RATUC, an electric energy conversion device R ATU, a contactor R BSB, a contactor L EPC, a contactor R EPC, a contactor LacT, a contactor RacT, a contactor LdcT and a contactor RdcT; the first end of the contactor L ATUC is connected with a Bus bar L115VAC Bus, the 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 the first end of the contactor L BSB and the first end of the contactor L EPC, the second end of the contactor L BSB is connected with the Bus bar L115VAC Bus, and the second end of the contactor L EPC is connected with a ground power supply L FWD EP; the first end of the contactor R ATUC is connected with a bus bar R115 VACBus, the 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 the first end of the contactor R BSB and the first end of the contactor R EPC, the second end of the contactor R BSB is connected with the bus bar R115 VACBus, and the second end of the contactor R EPC is connected with a ground power supply R FWD EP; the first end of the contactor LacT is connected with a Bus bar L115VAC Bus, 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 a Bus bar R115 VAC Bus; a contactor L TRU Rly, a power conversion device TRU L, a contactor R TRU Rly and a power conversion device TRU R; a first end of the contactor L TRU Rly is connected with a second end of the contactor L ATUC, a second end of the contactor LTRU Rly is connected with a power conversion device TRU L, and the power conversion device TRU is connected with a Bus bar L28 VDC Bus; a first end of the contactor R TRU Rly is connected with a second end of the contactor R ATUC, a second end of the contactor R TRU Rly is connected with a power conversion device TRU R, and the power conversion device TRU R is connected with a Bus bar R28VDC Bus; a first terminal of the contact LdcT is connected to the Bus bar L28 VDC Bus, a second terminal of the contact LdcT is connected to a first terminal of the contact RdcT, and a second terminal of the contact RdcT is connected to the Bus bar R28VDC Bus.
Compared with the prior art, the invention has the beneficial effects that: the priority setting better manages the power input of the Bus bar R28VDC Bus and the Bus bar L28 VDC Bus.
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 is a schematic diagram of a power system architecture according to an embodiment of the invention.
fig. 2 is a R28VDC Bus direct power supply for a multi-electric aircraft.
fig. 3 is an indirect power input source for TRU R28VDC Bus in a multi-level electric aircraft.
Fig. 4 is a power input path from R235VAC Bus input to R28VDC Bus in a multi-level electrical aircraft.
Fig. 5 is a power input path from R FWD EP input to R28VDC Bus in a multi-electrical aircraft.
fig. 6 is a power input path from the L FWD EP input to the TRU R28VDC in a multi-electrical aircraft.
fig. 7 is a L28 VDC Bus direct power supply for a multi-electric aircraft.
Fig. 8 is an indirect power input source for TRU L28 VDC Bus in a multi-level electric aircraft.
Fig. 9 is a power input path from L235 VAC Bus input to L28 VDC Bus in a multi-level aircraft.
Fig. 10 is a power input path from the L FWD EP input to the L28 VDC Bus in a multi-airplane.
Fig. 11 is a power input path from the R FWD EP input to the TRU L28 VDC in a multi-electrical aircraft.
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 power input priority structure of a left and right normal dc distribution bus bar of a novel single-channel multi-power aircraft power system is shown.
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 R235VAC Bus and are respectively converted into a secondary power supply of 115VAC and 28VDC through an LATU 115VAC, a TRU L28 VDC, an R ATU 115VAC and a TRU R28VDC to supply power for the L115VAC Bus, the L28 VDC Bus, the R115 VAC Bus and the R28VDC Bus. Contactors L ATUC and R ATUC are arranged between the Bus bar L/R235VAC Bus and the Bus bar L/R ATU 115VAC, 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 R28VDC 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/R235VAC 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 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 R235VAC 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 R235VAC 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 R235VAC 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 R235VAC 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 R28VDC 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 R28VDC 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 R235VAC 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 source 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.
Referring to fig. 2, the Bus bar R28VDC Bus has two direct power sources, one is the Bus bar L28 VDC Bus, and the other is the power conversion device TRU R28 VDC. The power source of the path power conversion device TRU R28VDC is prioritized over the power source of the path Bus L28 VDC Bus.
The power system has two normal dc distribution Bus bars L28 VDC Bus and R28VDC Bus, left and right, which have multiple possible power input sources, which need to be prioritized since only one power source can be received at a time. When a plurality of power sources exist simultaneously, the power source with high access priority is selected.
Referring to fig. 3, the power conversion device TRU R28VDC and the Bus bar L28 VDC Bus have three power sources, which are a Bus bar R235VAC Bus, a ground power source L FWD EP and a ground power source R FWD EP. They constitute an indirect power source for Bus bar R28VDC Bus. In the figure, one possible power path to R28VDC Bus is shown for each power source.
In a general case, the priorities of the three power sources are equal, and if the power sources exist simultaneously, the power source which is last ordered to be ON is optimal.
Fig. 3 shows only one possible power path for each power source, and in practice, there is more than one possible path for each power source, as will be described in more detail below.
1 power input path from Bus R235VAC Bus to Bus R28VDC Bus.
Referring to fig. 4, from the Bus R235VAC Bus power source, R28VDC Bus can be reached through two paths, corresponding to two priorities respectively.
These two paths are respectively:
1) priority 1: the contactor R ATUC and the contactor R TRU Rly are closed, and the Bus bar R28 VDCBus is supplied with power by starting from the Bus bar R235VAC Bus and passing through the contactor R ATUC and the contactor R TRU to the power conversion device TRU R28 VDC.
2) Priority 2: closing the contactor R BTB, the contactor L ATUC, the contactor L TRU Rly, the contactor LdcT and the contactor RdcT, starting from the Bus bar R235VAC Bus, reaching the Bus bar L235 VAC Bus through the contactor R BTB and the contactor L BTB, reaching the power conversion device TRUL 28VDC through the contactor L ATUC and the contactor L TRU Rly, supplying power to the Bus bar L28 VDC Bus, and then supplying power to the Bus bar R28VDC Bus through the contactor LdcT and the contactor RdcT.
2 power input path from ground power source L FWD EP to Bus bar R28VDC Bus.
Referring to fig. 5, starting from the ground power source L FWD EP, the Bus bar R28VDC Bus may be reached through two power paths, which correspond to two power priorities:
1) Priority 1: closing a contactor L EPC, a contactor L BSB, a contactor LacT, a contactor RacT, a contactor R BSB and a contactor R TRU Rly, starting from a ground power supply L FWD EP, reaching a Bus bar L115VAC Bus through the contactor L EPC and the contactor LBB, reaching the Bus bar R115 VAC Bus through the contactor LacT and the contactor RacT, reaching an electric energy conversion device R ATU 115VAC through the contactor R BSB, inputting output power to a power conversion device TRU R28VDC through the contactor R TRU Rly by the latter, and finally supplying power to the Bus bar R28VDC Bus;
2) priority 2: the contactor L EPC, the contactor L TRU Rly, the contactor LdcT and the contactor RdcT are closed, the ground power supply L FWD EP is started, the ground power supply L EPC passes through the contactor L EPC and reaches the electric energy conversion device L ATU 115VAC, the electric energy conversion device L ATU inputs output power to the power conversion device TRU L28 VDC through the contactor L TRU Rly, the power is supplied to the Bus bar L28 VDC Bus, and then the Bus bar R28VDC Bus is supplied with power through the contactor LdcT and the contactor RdcT.
the power profiles in the figure have all been marked with thick solid lines with arrows.
3 power input path from ground power supply R FWD EP to Bus bar R28VDC Bus.
Referring to fig. 6, there are two power input paths from the ground power source R FWD EP to the Bus bar R28VDC Bus, corresponding to two priorities:
1) Priority 1: the contactor rpec and the contactor rru Rly are closed, and the power source from the ground power source rbfd EP reaches the electric power conversion device rtau 115VAC via the contactor rpec, and the latter inputs the output power to the power conversion device TRU R28VDC via the contactor rrurly, and supplies the Bus bar R28VDC Bus.
2) priority 2: the method comprises the steps of closing a contactor R EPC, a contactor R BSB, a contactor RacT, a contactor LacT, a contactor L BSB, a contactor L TRU Rly, a contactor LdcT and a contactor RdcT, starting from a ground power supply R FWD EP, reaching a Bus bar R115 VAC Bus through a contactor REPC and the contactor R BSB, connecting the Bus bar L115VAC Bus to the contactor RacT and the contactor LacT, inputting the output power of the contactor L BSB to an electric energy conversion device L ATU 115VAC, inputting the output power of the latter to a power conversion device TRU L28 VDC through the contactor L TRU Rly, supplying the Bus bar L28 VDC Bus, and supplying the Bus bar R28VDC Bus through the contactor LdcT and the contactor RdcT.
The flow direction of the power flow of the two power paths has been identified in the figure by thick solid lines with arrows.
Referring to fig. 7, the Bus bar L28 VDC Bus has two power sources, one is the power conversion device TRU L28 VDC, and the other is the Bus bar R28VDC Bus. The two power sources correspond to two priorities respectively.
Referring to fig. 8, the power input of the Bus bar R28VDC Bus and the power conversion device TRU L28 VDC has three sources, i.e., a Bus bar L235 VAC Bus, a ground power source L FWD EP and a ground power source R FWD EP, which constitute three indirect power sources of the Bus bar L28 VDC Bus. The priorities of the three indirect power input sources are equal. In the figure, the power source has been shown to run in a solid bold line with arrows. If the power sources exist simultaneously, the power source which is last ordered to be ON has the 1 st priority.
there are two possible power paths to the Bus bar L28 VDC Bus for each of these three power sources, only one of which is shown in fig. 8, and which will be described in the following sections.
1 from L235 VAC Bus to L28 VDC Bus.
referring to fig. 9, there are two power input paths from the Bus bar L235 VAC Bus to the Bus bar L28 VDC Bus, corresponding to two priorities:
1) Priority 1: the contactor L ATUC and the contactor L TRU Rly are closed, and the power supply from the Bus bar L235 VAC Bus to the power conversion device TRU L28 VDC via the contactor L ATUC and the contactor L TRU Rly supplies power to the Bus bar L28 VDC Bus.
2) Priority 2: closing the contactor L BTB, the contactor R ATUC, the contactor ESS ISO Rly, the contactor E1 TRU Rly, the contactor E1 TRU ISO Rly and the contactor L TRU Rly, reaching the Bus bar R235 VACBs from the Bus bar L235 VACBus through the contactor L BTB and the contactor R BTB, reaching the Bus bar ESS 235VAC Bus through the contactor R ATUC and the contactor ESS ISO Rly, and finally reaching the power conversion device TRU L28 VDC through the contactor E1 TRU Rly, the contactor E1 TRUSO Rly and the contactor L TRU Rly to supply power to the Bus bar L28 VDC Bus.
the power trend in the figure has been marked with a thick solid line with arrows.
2 from the ground power source L FWD EP to the Bus bar L28 VDC Bus.
Referring to fig. 10, a power path from the ground power source L FWD EP to the Bus bar L28 VDC Bus is input.
There are two power input paths from the ground power supply L FWD EP to the Bus bar L28 VDC Bus, corresponding to two priorities:
1) Priority 1: closing the contactor L EPC and the contactor L TRU Rly, reaching L ATU 115VAC from a ground power supply L FWD EP through the contactor L EPC, and reaching TRU L28 VDC through the contactor L TRU Rly to supply power for L28 VDC Bus;
2) priority 2: closing the contactor L EPC, the contactor L BSB, the contactor LacT, the contactor RacT, the contactor R BSB, the contactor R TRU Rly, the contactor RdcT and the contactor LdcT, reaching the Bus bar L115 VACBus from the ground power supply L FWD EP through the contactor L EPC and the contactor L BSB, reaching the Bus bar R115 VACBus through the contactor LacT and the contactor RacT, reaching the electric energy conversion device R ATU 115VAC through the contactor R BSB, reaching the power conversion device TRU R28VDC through the contactor R TRU Rly, supplying power to the Bus bar R28VDC Bus, and finally reaching the Bus bar L28 VDC Bus through the contactor RdcT and the contactor LdcT.
the power trend in the figure has been marked with a thick solid line with arrows.
3 from the ground power supply R FWD EP to the Bus bar L28 VDC Bus.
Referring to fig. 11, two power input paths from the ground power source R FWD EP to the Bus bar L28 VDC Bus correspond to two priorities, respectively.
1) priority 1: the method comprises the steps of closing a contactor R EPC, a contactor R BSB, a contactor RacT, a contactor LacT, a contactor L BSB and a contactor L TRU Rly, reaching a Bus bar R115 VAC Bus from a ground power supply R FWD EP through the contactor R EPC and the contactor R BSB, reaching the Bus bar L115VAC Bus through the contactor RacT and the contactor LacT, reaching an electric energy conversion device L ATU 115VAC through the contactor LBB, and reaching a power conversion device TRU L28 VDC through the contactor L TRU Rly to supply power for the Bus bar L28 VDC Bus.
2) Priority 2: the contactor R EPC, the contactor R TRU Rly, the contactor RdcT and the contactor LdcT are closed, the ground power supply R FWD EP reaches the electric energy conversion device R ATU 115VAC through the contactor R EPC, the ground power supply R FWD EP reaches the electric energy conversion device TRU 28VDC through the contactor R TRURly, the Bus bar R28VDC Bus is supplied with power, and the ground power supply R FWD reaches the Bus bar L28 VDC Bus through the contactor RdcT and the contactor LdcT.
The power trend in the figure has been marked with a thick solid line with arrows.
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 (5)
1. The power input priority structure of the left and right normal direct current distribution bus bar of the single-channel multi-electric-aircraft power supply system is characterized by comprising,
A Bus bar R28VDC Bus selectively powered by one of the power conversion device TRU R, the Bus bar L28 VDC Bus, the ground power supply R FWD EP, the ground power supply L FWD EP, and the Bus bar R235VAC Bus; the power conversion device TRU and the Bus bar L28 VDC Bus are direct power sources, and the ground power source R FWD EP, the ground power source L FWD EP and the Bus bar R235VAC Bus are indirect power sources; the power supply priority of the direct power source is higher than that of the indirect power source; in the direct power source, the power supply priority of the power conversion device TRU R is higher than that of the Bus bar L28 VDC Bus; in the indirect power source, the power supply priority of a ground power supply R FWD EP, the power supply priority of a ground power supply L FWD EP and the power supply priority of a Bus bar R235VAC Bus are the same; and the number of the first and second groups,
a Bus bar L28 VDC Bus selectively powered by one of the power conversion device TRU L, the Bus bar R28VDC Bus, the ground power supply R FWD EP, the ground power supply L FWD EP, and the Bus bar L235 VAC Bus; the system comprises a power conversion device TRU L, a Bus bar R28VDC Bus, a ground power supply R FWD EP, a ground power supply L FWD EP and a Bus bar L235 VAC Bus, wherein the power conversion device TRU L and the Bus bar R28VDC Bus are direct power sources, and the ground power supply R FWD EP, the ground power supply L FWD EP and the Bus bar L235 VAC Bus are indirect; the power supply priority of the direct power source is higher than that of the indirect power source; in the direct power source, the power supply priority of the power conversion device TRU L is higher than that of the Bus bar R28VDC Bus; in the indirect power source, the ground power source R FWD EP, the ground power source L FWD EP, and the Bus bar L235 VAC Bus have the same power supply priority.
2. The single-channel multi-airplane power supply system left-right normal direct-current power distribution Bus power input priority structure according to claim 1, wherein if three indirect power sources of a Bus R28VDC Bus exist simultaneously, the power source which was last commanded ON is optimal; if three indirect power sources of the Bus bar L28 VDC Bus are present at the same time, the last power source commanded ON is optimal.
3. The structure of the power input priority of the left and right normal direct current power distribution Bus bars of the single-channel multi-aircraft power system according to claim 2, wherein for the Bus bar R28VDC Bus, the power supply priority of the ground power R FWD EP intermediate path power conversion device TRU R is higher than that of the path Bus bar L28 VDC Bus, the power supply priority of the ground power L FWD EP intermediate path power conversion device TRU R is higher than that of the path Bus bar L28 VDC Bus, and the power supply priority of the Bus bar R235VAC Bus intermediate path power conversion device TRU R is higher than that of the path Bus bar L28 VDC Bus; for the Bus bar L28 VDC Bus, the power supply priority of the ground power supply L FWD EP intermediate path power conversion device TRU L is higher than that of the path Bus bar R28VDC Bus, and the power supply priority of the Bus bar L235 VAC Bus intermediate path power conversion device TRU L is higher than that of the path Bus bar R28VDC Bus.
4. The single channel multi-electric aircraft power supply system left-right normal direct current distribution bus power input priority structure according to claim 1, 2 or 3, further comprising a contactor L GCB, a contactor R GCB, a contactor L BTB, a contactor APB and a contactor R BTB; the first end of the contactor L GCB is connected with the main generator GEN L, and the second end of the contactor L GCB is connected with the Bus bar L115VAC Bus; the first end of the contactor R GCB is connected with a main generator GEN R, and the second end of the contactor R GCB is connected with a Bus bar R115 VAC Bus; contactor L BTB's first end links to each other with busbar L115VAC Bus, and contactor APB's first end links to each other with auxiliary generator APU GEN, and contactor R BTB's first end links to each other with busbar R115 VACBus, and contactor L BTB's second end links to each other with contactor ATB's second end and contactor R BTB's second end respectively.
5. The single-channel multi-airplane power system left-right normal direct current distribution bus power input priority structure of claim 4, further comprising a contactor L ATUC, an electric energy conversion device L ATU, a contactor LBSB, a contactor R ATUC, an electric energy conversion device R ATU, a contactor R BSB, a contactor L EPC, a contactor R EPC, a contactor LacT, a contactor RacT, a contactor LdcT, and a contactor RdcT; the first end of the contactor L ATUC is connected with a bus bar L115 VACBus, the 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 the first end of a contactor L BSB and the first end of a contactor L EPC, the second end of the contactor L BSB is connected with the bus bar L115 VACBus, and the second end of the contactor L EPC is connected with a ground power supply L FWD EP; the first end of the contactor R ATUC is connected with a Bus bar R115 VAC Bus, the 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 the first end of the contactor R BSB and the first end of the contactor R EPC, the second end of the contactor R BSB is connected with the Bus bar R115 VAC Bus, and the second end of the contactor R EPC is connected with a ground power supply R FWD EP; the first end of the contactor LacT is connected with a Bus bar L115VAC Bus, 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 a Bus bar R115 VAC Bus; a contactor L TRU Rly, a power conversion device TRU L, a contactor R TRU Rly and a power conversion device TRU R; the first end of the contactor L TRU Rly is connected with the second end of the contactor L ATUC, 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 first end of the contactor R TRU Rly is connected with the second end of the contactor R ATUC, the second end of the contactor R TRURly is connected with the power conversion device TRU R, and the power conversion device TRU R is connected with the Bus bar R28VDC Bus; a first terminal of the contact LdcT is connected to the Bus bar L28 VDC Bus, a second terminal of the contact LdcT is connected to a first terminal of the contact RdcT, and a second terminal of the contact RdcT is connected to the Bus bar R28VDC Bus.
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| CN110556814B (en) | 2023-08-25 |
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