CN111668916A - Satellite load power supply backup system - Google Patents
Satellite load power supply backup system Download PDFInfo
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- CN111668916A CN111668916A CN202010456740.1A CN202010456740A CN111668916A CN 111668916 A CN111668916 A CN 111668916A CN 202010456740 A CN202010456740 A CN 202010456740A CN 111668916 A CN111668916 A CN 111668916A
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention relates to a backup system, in particular to a satellite load power supply backup system. The invention aims to solve the technical problems that in the prior art, backup unreasonable occupies limited instruction resources and communication bandwidth, or the reliability is poor, and provides a satellite load power supply backup system. The system comprises a control command relay, a power supply module, a control module and a load relay; the input end of the control command relay is connected with an external power supply, and the output end of the control command relay is divided into two paths, wherein one path is connected with the power supply module, and the other path is connected with the control module; the power supply module is connected with the load relay; the power module adopts a cold standby mode; the control module comprises a direct-current converter warm standby assembly and a control panel cold standby assembly, the control panel cold standby assembly is used for communicating with an external star control system and an external load, one path of the control panel cold standby assembly comprises a first relay and a first control panel which are sequentially connected in series, and the other path of the control panel cold standby assembly comprises a second relay and a second control panel which are sequentially connected in series.
Description
Technical Field
The invention relates to a backup system, in particular to a satellite load power supply backup system.
Background
With the continuous development of the aerospace industry, the number of the transmitted satellites is more and more, and the satellite transmission density is higher and higher. The research and development periods of the satellite platform and the novel load are shorter and shorter, and because the load branch system power supply on the satellite platform is not backed up or is unreasonable in backup, the unreasonable backup means that the control part and the load part are not separated from each other and the control panel is not backed up. The control part and the power supply of the load part are not separated, a satellite control system is required to judge the working state of the cold standby power panel, and when the working state of the power panel is abnormal, backup is switched, more control instructions are required, and limited instruction resources and communication bandwidth are occupied; the control panel does not have the backup and leads to the reliability variation, and then leads to the phenomenon that load subsystem can't work to take place occasionally.
Disclosure of Invention
The invention aims to solve the technical problems that an existing satellite load power supply backup system is unreasonably backed up to occupy limited instruction resources and communication bandwidth, or a control panel is not backed up to cause poor reliability, and provides a satellite load power supply backup system.
In order to solve the technical problems, the technical solution provided by the invention is as follows:
a satellite load power supply backup system is characterized in that: the control system comprises a control command relay, a power supply module, a control module and a load relay;
the control command relay is controlled by an external satellite control system;
the input end of the control command relay is connected with an external power supply, and the output end of the control command relay is divided into two paths, wherein one path is connected with the input end of the power supply module, and the other path is connected with the input end of the control module;
the power supply module supplies power to an external load through a load relay;
the power module adopts a cold standby mode, and the control module controls the cold standby working state to be switched;
the control module comprises a direct-current converter warm-standby component and a control panel cold-standby component, and the control panel cold-standby component is used for communicating with an external star control system and an external load; the control panel cold standby assembly is divided into two paths, wherein one path comprises a first relay and a first control panel which are sequentially connected in series, and the other path comprises a second relay and a second control panel which are sequentially connected in series;
the first control board and the second control board share a ground electrode;
the first relay is a normally closed relay, and a first relay control signal is set to be in a pull-up state by default;
the second relay is a normally open relay, and a second relay control signal is set to be in a pull-up state by default;
enabling signals of the first relay and the second relay are both high level;
the first control board outputs a control signal to control the first relay and the second relay; the second control board outputs a control signal to control the first relay and the second relay; the control logic is as follows:
when the working condition of the first control board is normal, the control signal sent by the first control board to the first relay is at a low level, and the first relay maintains a normally closed state; the first control board pulls down the control signal of the second relay through a program to enable the second relay to maintain a normally open state;
when first control panel behavior is unusual, because second relay control signal no longer is drawn low by first control panel, the control signal of second relay becomes the high level because of being in the pull-up state, and the second relay converts the closed condition into, and the work of second control panel, second control panel send for first relay control signal be the high level, make first relay convert the off-state into to first control panel loses the electricity and does not work.
Furthermore, the direct current converter warm-keeping assembly is divided into two paths, each path is sequentially provided with a direct current converter and a first one-way conduction element, the input ends of the two paths of direct current converters are connected in common, the negative ends of the two paths of first one-way conduction elements are connected in common, the output voltage of one path of direct current converter is slightly higher than that of the other path of direct current converter, so that a warm-keeping mode is realized, and the one path of direct current converter with high output voltage supplies power to the control panel cold-keeping assembly all the time.
Furthermore, the power supply module is divided into two paths, one path comprises a third relay, a power supply board and a second one-way conduction element which are sequentially connected in series, the other path comprises a fourth relay, a power supply standby board and a second one-way conduction element which are sequentially connected in series, and the negative ends of the two paths of second one-way conduction elements are connected with the input end of the load relay after being connected in common;
the control signal of first control panel output still controls third relay and fourth relay, the control signal of second control panel output still controls third relay and fourth relay.
Furthermore, the first relay and the second relay control signal interface of the first control board are positioned in different groups, and the third relay and the fourth relay control signal interface are positioned in different groups; similarly, the first relay and the second relay control signal interface of the second control board are located in different groups, and the third relay and the fourth relay control signal interface are located in different groups.
Further, the power panel, the power spare panel, the first control panel and the second control panel work in a default mode or are switched according to instructions of an external star service control system.
Further, the control command relay is two relays connected in parallel.
Further, the control command relay is a magnetic latching relay.
Further, the first unidirectional conducting element and the second unidirectional conducting element both adopt diodes.
Furthermore, the first control board and the second control board both adopt FPGA chips.
Further, the load relays are provided in a plurality and connected in parallel, and the plurality of load relays correspond to different loads.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a satellite load power supply backup system.A control module adopts a direct current converter warm-standby component and a control panel cold-standby component, the control panel cold-standby component is divided into two paths, one path comprises a first relay and a first control panel which are sequentially connected in series, the other path comprises a second relay and a second control panel which are sequentially connected in series, the first relay is a normally closed relay, the second relay is a normally open relay, control signals of the first relay and the second relay are set to be in a pull-up state by default, the power supply module adopts a cold-standby mode, the control module controls the cold-standby working state to be switched, the power supply module does not need to occupy the instruction resource of a satellite control system, and the satellite load power supply backup system has the advantages of saving the instruction resource of the satellite control system and high reliability, thereby solving the problem that the existing satellite load power supply backup system is, the satellite control system is required to judge the working state of the cold standby power panel, and when the working state of the power panel is abnormal, backup is switched, more control instructions are required, and limited instruction resources and communication bandwidth are occupied.
2. According to the satellite load power supply backup system provided by the invention, the power supply module adopts a cold standby mode, so that the reliability of the satellite load power supply backup system is further enhanced.
3. The first relay and the second relay control signal interface of the first control board are positioned in different groups, and the third relay and the fourth relay control signal interface are positioned in different groups; similarly, the first relay and the second relay control signal interface of the second control board are located in different groups, and the third relay and the fourth relay control signal interface are located in different groups, wherein the control signal interfaces are located in different groups so as to improve reliability, the control chip can cause the control group signal to be opened due to the single particle effect in electrostatic discharge or space, and the control chip can improve reliability when located in different groups.
4. The control command relay is two magnetic latching relays which are connected in parallel, so that the reliability of the control command relay can be improved, the overload current can be increased, the magnetic latching relay adopted at the position can maintain the previous working state after being powered off and then powered on, and the working state can be changed after receiving a command.
5. In the two paths of direct current converters, the output voltage of one path of direct current converter is slightly higher than that of the other path of direct current converter so as to realize a warm standby mode, and the one path of direct current converter with high output voltage supplies power to the control panel cold standby component all the time.
6. In order to avoid the situation that the high-voltage end is electrified to the low-voltage end, a first one-way conduction element is arranged behind two direct-current converters of the direct-current converter temperature backup assembly, a second one-way conduction element is arranged behind a power panel and a power backup panel, and diodes are adopted by the first one-way conduction element and the second one-way conduction element.
7. Because the control capability of the FPGA chip is strong and the control speed is high, the control chips of the first control board and the second control board are both FPGA chips.
8. The load relays are multiple and connected in parallel, and the specific number is determined by the number of external loads.
Drawings
FIG. 1 is a schematic diagram of a satellite load power backup system according to the present invention;
FIG. 2 is a schematic view of the control panel cold spare assembly of FIG. 1;
fig. 3 is a schematic control diagram of a first control board and a second control board of the satellite load power supply backup system for a first relay and a second relay respectively.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A satellite load power supply backup system comprises a control instruction relay, a power supply module, a control module and a load relay; the control command relay is two magnetic latching relays which are connected in parallel; the control command relay is controlled by an external satellite control system to determine whether the subsystem is started or not; the input end of the control instruction relay is connected with an external power supply (namely a primary power supply provided by the satellite platform for the load subsystem), the output end of the control instruction relay is divided into two paths, one path is connected with the input end of the power supply module, and the other path is connected with the input end of the control module; the power supply module is connected with an external load through a load relay, and the power supply module adopts a cold standby mode, namely two power supply boards are designed; when the load system works, all loads are not required to be started, so that the load is controlled by controlling the on-off of the load relay through the control panel. The load relay is not only one relay, but a plurality of load relays which are connected in parallel with each other, the plurality of load relays correspond to different loads respectively, and the number of the load relays is related to the number of the controlled loads.
The control module comprises two direct current converters, a first one-way conduction element, a first relay, a first control board, a second relay and a second control board; the two direct current converters adopt a warm standby mode, the output voltage of one direct current converter is slightly higher than that of the other direct current converter so as to realize the warm standby mode, one direct current converter with high output voltage supplies power to the cold standby component of the control panel all the time, and the output voltages of the two direct current converters are respectively VO+U0、VOWherein U is0The value range is 0.5V-1.5V, and 1.0V is preferred. The core of the control module is a control panel, in order to improve reliability, the control panel adopts a cold standby mode, namely, only one control panel is used for working for the first control panel and the second control panel, one control panel is selected for working after the system is powered on, and the first relay and the second relay can be controlled after the control panel is powered on for working, so that the output end of each direct current converter is connected with a first one-way conduction element, the two first one-way conduction elements are divided into two paths after being connected in common, one path comprises the first relay and the first control panel which are sequentially connected in series, and the other path comprises the second relay and the second control panel which are sequentially connected in series; the first control board outputs control signals to control the first relay, the second relay and the power supply module, and is also communicated with an external star service control system and an external load respectively; the second control board outputs control signals to control the first relay, the second relay and the power supply module, and the second control board is further communicated with an external star service control system and an external load respectively.
One problem to be solved by adopting the above method is that if the first control board is in fault, how to start the second control board is solved by adopting the following method:
the first control board and the second control board share a ground electrode; the first relay is a normally closed relay; the second relay is a normally open relay; enabling signals of the first relay and the second relay are both high levels, the first control board is defaulted to work after the load system is electrified, and the second control board does not work. The control panel switching process is as follows:
when the working condition of the FPGA of the first control board is normal, the control signal sent to the first relay by the FPGA is low level, and the first relay maintains a normally closed state; the second relay control signal is in a pull-up state, and the FPGA of the first control board internally pulls down the second relay control signal through a program to enable the second relay to maintain a normally open state;
when the working condition of the FPGA of the first control board is abnormal, the control signal of the second relay cannot be pulled down through the internal program of the FPGA of the first control board, the control signal of the second relay is high level, the second relay is switched to be in a closed state, the second control board works, the FPGA of the second control board sends the control signal of the first relay to be pulled up and to be high level, the first relay is switched to be in an open state, and the FPGA of the first control board is out of power and does not work; the second relay control signal is in a pull-up state and is in a high level, so that the second relay is in a closed state and cannot be powered off in the FPGA program loading process of the second control board.
The power supply module is divided into two paths, one path comprises a third relay, a power supply board and a second one-way conduction element which are sequentially connected in series, the other path comprises a fourth relay, a power supply spare board and a second one-way conduction element which are sequentially connected in series, negative ends of the two paths of second one-way conduction elements are connected with the input end of the load relay after being connected in common, and the one-way conduction elements can prevent the working power supply board from outputting current to the non-working power supply board; the control signal of first control panel output still controls third relay and fourth relay, the control signal of second control panel output still controls third relay and fourth relay. The power panel and the power supply standby panel only have one power panel to be in a working state, and the work of which power panel is realized by controlling the on-off of the third relay and the fourth relay by the control panel.
The power panel, the power spare panel, the first control panel and the second control panel work in a default mode or are switched according to instructions of an external star service control system.
The first relay and the second relay control signal interface of the first control board are positioned in different groups, and the third relay and the fourth relay control signal interface are positioned in different groups; similarly, the first relay and the second relay control signal interface of the second control board are located in different groups, and the third relay and the fourth relay control signal interface are located in different groups. The first one-way conduction element and the second one-way conduction element are both diodes. The first control panel and the second control panel both adopt FPGA chips.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for a person skilled in the art to modify the specific technical solutions described in the foregoing embodiments or to substitute part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (10)
1. A satellite load power supply backup system is characterized in that: the control system comprises a control command relay, a power supply module, a control module and a load relay;
the control command relay is controlled by an external satellite control system;
the input end of the control command relay is connected with an external power supply, and the output end of the control command relay is divided into two paths, wherein one path is connected with the input end of the power supply module, and the other path is connected with the input end of the control module;
the power supply module supplies power to an external load through a load relay;
the power module adopts a cold standby mode, and the control module controls the cold standby working state to be switched;
the control module comprises a direct-current converter warm-standby component and a control panel cold-standby component, and the control panel cold-standby component is used for communicating with an external star control system and an external load; the control panel cold standby assembly is divided into two paths, wherein one path comprises a first relay and a first control panel which are sequentially connected in series, and the other path comprises a second relay and a second control panel which are sequentially connected in series;
the first control board and the second control board share a ground electrode;
the first relay is a normally closed relay, and a first relay control signal is set to be in a pull-up state by default;
the second relay is a normally open relay, and a second relay control signal is set to be in a pull-up state by default;
enabling signals of the first relay and the second relay are both high level;
the first control board outputs a control signal to control the first relay and the second relay; the second control board outputs a control signal to control the first relay and the second relay; the control logic is as follows:
when the working condition of the first control board is normal, the control signal sent by the first control board to the first relay is at a low level, and the first relay maintains a normally closed state; the first control board pulls down the control signal of the second relay through a program to enable the second relay to maintain a normally open state;
when first control panel behavior is unusual, because second relay control signal no longer is drawn low by first control panel, the control signal of second relay becomes the high level because of being in the pull-up state, and the second relay converts the closed condition into, and the work of second control panel, second control panel send for first relay control signal be the high level, make first relay convert the off-state into to first control panel loses the electricity and does not work.
2. The satellite payload power backup system of claim 1, wherein: the direct current converter warm is equipped with the subassembly and is divided into two the tunnel, and each way has set gradually direct current converter and first one-way conduction element, and two tunnel direct current converter's input connects altogether, and two tunnel first one-way conduction element's negative terminal connects altogether, and wherein direct current converter's output voltage is a little higher than another way direct current converter's output voltage all the way to realize warm and prepare the mode, supply power for the control panel cold is equipped with the subassembly by direct current converter of the same way that output voltage is high all the time.
3. The satellite payload power backup system of claim 2, wherein: the power supply module is divided into two paths, one path comprises a third relay, a power supply board and a second one-way conduction element which are sequentially connected in series, the other path comprises a fourth relay, a power supply standby board and a second one-way conduction element which are sequentially connected in series, and the negative ends of the two paths of second one-way conduction elements are connected with the input end of the load relay after being connected in common;
the control signal of first control panel output still controls third relay and fourth relay, the control signal of second control panel output still controls third relay and fourth relay.
4. A satellite payload power backup system according to any of claims 1 to 3, wherein: the first relay and the second relay control signal interface of the first control board are positioned in different groups, and the third relay and the fourth relay control signal interface are positioned in different groups; similarly, the first relay and the second relay control signal interface of the second control board are located in different groups, and the third relay and the fourth relay control signal interface are located in different groups.
5. The satellite payload power backup system of claim 4, wherein: the power panel, the power spare panel, the first control panel and the second control panel work in a default mode or are switched according to instructions of an external star service control system.
6. The satellite payload power backup system of claim 5, wherein: the control command relay is two relays which are connected in parallel.
7. The satellite payload power backup system of claim 6, wherein: the control command relay is a magnetic latching relay.
8. The satellite payload power backup system of claim 7, wherein: the first one-way conduction element and the second one-way conduction element are both diodes.
9. The satellite payload power backup system of claim 8, wherein: the first control panel and the second control panel both adopt FPGA chips.
10. The satellite payload power backup system of claim 1, wherein: the load relays are connected in parallel, and the load relays correspond to different loads respectively.
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| CN202010456740.1A CN111668916A (en) | 2020-05-26 | 2020-05-26 | Satellite load power supply backup system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737333A (en) * | 2020-12-28 | 2021-04-30 | 航天东方红卫星有限公司 | Secondary power supply with high conversion efficiency for satellite |
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| CN109298660A (en) * | 2018-08-14 | 2019-02-01 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Control system for satellite effective load |
| CN213027522U (en) * | 2020-05-26 | 2021-04-20 | 中国科学院西安光学精密机械研究所 | Satellite load power supply backup system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737333A (en) * | 2020-12-28 | 2021-04-30 | 航天东方红卫星有限公司 | Secondary power supply with high conversion efficiency for satellite |
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