CN110707809A - Automatic switching alarm device between independent UPS of transformer substation - Google Patents
Automatic switching alarm device between independent UPS of transformer substation Download PDFInfo
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- CN110707809A CN110707809A CN201911168007.3A CN201911168007A CN110707809A CN 110707809 A CN110707809 A CN 110707809A CN 201911168007 A CN201911168007 A CN 201911168007A CN 110707809 A CN110707809 A CN 110707809A
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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
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Abstract
The invention discloses a self-switching alarm device between independent UPSs of a transformer substation, which comprises: the detection unit is used for collecting voltage and current signals on the first UPS power supply system, the second UPS power supply system and a power supply line; the control unit receives the detection signal of the detection unit and outputs a control signal; the alarm unit is used for sending out fault alarm information; the power supply unit is used for providing working voltage of the control unit; the driving output unit is arranged on the supply line and used for receiving the control signal of the control unit and executing switching action; the output end of the detection unit is connected with the control unit, the output end of the control unit is connected with the driving output unit and the alarm unit, and the output end of the power supply unit is connected with the control unit. According to the invention, the AC output of the UPS system is realized through the automatic switching device, and uninterrupted high-quality AC is provided for important loads of a transformer substation; simple structure, economy, transformation are comparatively convenient and quick.
Description
Technical Field
The invention relates to the technical field of transformer substations, in particular to an automatic switching alarm device between independent UPS of a transformer substation.
Background
With the development of a Power grid and the requirement of UPS (Uninterruptible Power Supply) for more and more devices, a continuous Power Supply system plays a crucial role in the rapid Power restoration of a transformer substation.
The 220kV transformer substation/generally is two sets of equipment UPS, two sets of newly-built 220kV UPS usually adopt a master-slave mode or a master-slave mode, when one set of UPS goes wrong, the other set of UPS can be started immediately to output, but no spare power automatic switching device exists between two sets of UPS of many 220kV old stations, when one set of UPS device goes out of line, when the other set of equipment is started, time delay occurs in the middle, so that the middle power-off phenomenon is caused, and the whole important load cannot be supplied continuously.
In view of the above technical problems, there is a need for a self-priming device to solve the above problem of being unable to supply power continuously.
Disclosure of Invention
The invention aims to solve the technical problem of disclosing a self-switching alarm device between independent UPSs of a transformer substation aiming at the defects in the prior art. When no alternating current is output in the collected alternating current, the automatic switching device is started to disconnect the fault UPS output air switch, and the other end UPS is switched into the communication air switch, so that the situation that a part of important loads cannot be continuously supplied with power is avoided, and the safe and stable operation of the transformer substation is guaranteed.
The technical scheme adopted by the invention is as follows:
a self-throwing alarm device between independent UPSs of a transformer substation comprises:
the detection unit is used for collecting voltage and current signals on the first UPS power supply system, the second UPS power supply system and a power supply line;
the control unit receives the detection signal of the detection unit and outputs a control signal;
the alarm unit is used for sending out fault alarm information;
the power supply unit is used for providing working voltage of the control unit;
the driving output unit is arranged on the supply line and used for receiving the control signal of the control unit and executing switching action;
the output end of the detection unit is connected with the control unit, the output end of the control unit is connected with the driving output unit and the alarm unit, and the output end of the power supply unit is connected with the control unit.
The further technical scheme of the invention is as follows: the driving output unit comprises a first output module and a second output module;
the first output module is arranged on a first UPS power supply system, and the second output module is arranged on a second UPS power supply system;
the first output module comprises a first fuse, a first contactor and a first air switch; the first fuse is connected with the first contactor in series and then connected with the output end of a first UPS power supply system in parallel, a first air switch is connected on the first UPS power supply system in series, and the output end of the first air switch is connected with the first contactor;
the second output module comprises a second fuse, a second contactor and a second air switch; the second fuse is connected with the output end of a second UPS power supply system in parallel after being connected with the second contactor in series, a second air switch is connected on the second UPS power supply system in series, and the output end of the second air switch is connected with a second contactor controller.
The further technical scheme of the invention is as follows: the detection module comprises:
the first voltage and current detector is arranged at the output end of the first UPS power supply system;
the second voltage and current detector is arranged at the output end of the second UPS power supply system;
a third voltage-current detector provided on the power supply line;
and the output ends of the first voltage current detector, the second voltage current detector and the third voltage current detector are connected with the controller through AD converters.
The further technical scheme of the invention is as follows: the controller adopts an AT89S51 type single chip microcomputer. And the output end of the controller is connected with the first contactor and the second contactor.
The further technical scheme of the invention is as follows: the alarm unit comprises an audible and visual alarm and a remote transmission module, and the output end of the controller is connected with the audible and visual alarm and the remote transmission module.
The further technical scheme of the invention is as follows: the power supply unit adopts a rechargeable battery, and the rechargeable battery is connected with a power supply line.
Compared with the prior art, the invention has the following advantages:
according to the automatic switching device between the independent UPSs of the transformer substation, two groups of UPS power supply systems are selected to output through the automatic switching device, and uninterrupted high-quality alternating current is provided for important loads of the transformer substation; meanwhile, the device is simple in structure, economical, convenient and quick to transform, and the UPS provides more stable guarantee.
Drawings
Fig. 1 is a structural diagram of an automatic switching alarm device between independent UPSs of a transformer substation according to the present invention;
fig. 2 is a structural diagram of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, a structural diagram of an automatic switching alarm device between independent UPSs of a transformer substation is provided.
As shown in fig. 1, an automatic switching alarm device between independent UPSs of a transformer substation includes:
the detection unit 101 is used for collecting voltage and current signals on a first UPS power supply system, a second UPS power supply system and a power supply line;
a control unit 102 receiving the detection signal of the detection unit and outputting a control signal;
the alarm unit 103 is used for sending out fault alarm information;
a power supply unit 104 for supplying an operating voltage of the control unit;
a driving output unit 105 arranged on the supply line for receiving the control signal of the control unit and performing a switching action;
the output end of the detection unit 101 is connected with the control unit 102, the output end of the control unit 102 is connected with the driving output unit 105 and the alarm unit 103, and the output end of the power supply unit 104 is connected with the control unit 102.
In the embodiment of the invention, two UPS power supply systems are arranged to provide auxiliary power for a power supply line, an automatic switching device is adopted to realize output control of the two UPS power supply systems, so that the UPS systems can be connected in time to provide uninterrupted power supply when the power supply line is powered off, the normal operation of a transformer substation system is ensured, the situation that the normal output cannot be ensured due to the fault when only one UPS system is arranged can be prevented by arranging the two UPS systems, the reliability of system power supply is improved by the two UPS systems, when one UPS system is in fault, a monitoring person can be reminded to maintain the UPS system in time through the output of an alarm unit, in the embodiment, voltage and current on a first UPS power supply system, a second UPS power supply system and the power supply line are detected by a detection unit respectively, and a control unit receives signals detected by the detection unit to generate control, the drive output unit is controlled, so that the two UPS power supply systems output power in an optimal mode, and stable operation of the transformer substation is guaranteed.
Referring to fig. 2, a block diagram of an embodiment of the present invention is shown.
In the embodiment of the invention, the driving output unit comprises a first output module and a second output module;
the first output module is arranged on a first UPS power supply system, and the second output module is arranged on a second UPS power supply system;
the first output module comprises a first fuse FU1, a first contactor KV1 and a first air switch; the first fuse FU1 is connected in series with a first contactor KV1 and then connected in parallel with the output end of a first UPS power supply system, a first air switch is connected in series on the first UPS power supply system, and the output end of the first air switch is connected with a first contactor KV 1;
the second output module comprises a second fuse FU2, a second contactor KV2 and a second air switch; the second fuse FU2 is connected in series with the second contactor KV2 and then connected in parallel with the output end of the second UPS power supply system, the second UPS power supply system is connected in series with a second air switch, and the output end of the second air switch is connected with the second contactor KV 2.
Specifically, the first output module is used for performing output control on a first UPS (uninterrupted power supply) system, and controlling the output end of the first UPS system through a first fuse, a first contactor and a first air switch, so that when the first UPS system needs to provide power supply voltage, the first contactor is closed, the first air switch is closed, and the first UPS system outputs the voltage to a power supply line;
similarly, the second UPS power supply system outputs the second UPS power supply system to the power supply line through the second contactor.
In an embodiment of the present invention, the detection module includes:
the first voltage and current detector is arranged at the output end of the first UPS power supply system;
the second voltage and current detector is arranged at the output end of the second UPS power supply system;
a third voltage-current detector provided on the power supply line;
and the output ends of the first voltage current detector, the second voltage current detector and the second voltage current detector are connected with the controller through AD converters.
The first voltage current detector, the second voltage current detector and the third voltage current detector are respectively used for detecting whether the first UPS system, the second UPS system and the power supply line are normal or not, wherein the third power supply line can be provided with a front side end voltage current detector and a rear side end voltage current detector, and the power supply line between the front side end voltage current detector and the rear side end voltage current detector is connected with the output ends of the first UPS system and the second UPS system.
In the embodiment of the invention, the controller adopts an AT89S51 type single chip microcomputer, and the output end of the controller is connected with the first contactor and the second contactor. The single chip microcomputer receives the detection signal of the detection unit, converts the detection signal into a digital signal through the external AD converter and inputs the digital signal to the single chip microcomputer, and the single chip microcomputer outputs a control instruction according to the digital signal to control the first contactor and the second contactor, so that the first UPS power supply system or the second UPS power supply system outputs voltage to a power supply line.
In the embodiment of the invention, the alarm unit is used for providing alarm information for monitoring personnel or operating personnel, so that the maintenance is convenient and timely, the alarm unit comprises the audible and visual alarm and the remote transmission module, and the output end of the controller is connected with the audible and visual alarm and the remote transmission module.
In the embodiment of the invention, the power supply unit supplies power independently, and adopts the rechargeable battery which is connected with the power supply circuit. When the power supply line supplies power normally, the rechargeable battery can be charged, and the working voltage required by the controller is provided.
The specific implementation process of the invention is as follows: the UPS outgoing line switch power supply side is provided with a fuse and a relay, the output of a contactor on the idle load side is controlled through the contact attraction of the relay, and once the contactor starts to output, the centralized control and the remote place are alarmed:
(1) firstly, the device is installed on the site, if one UPS system can not output AC, the contactor is started, after the UPS system is opened, the contactor is closed, the load is borne by the other UPS system, and simultaneously the UPS contacts the contactor to act to the background, and No. 1(2) UPS AC output faults occur.
(2) When the contactor acts, a signal is sent to the control module and then output through the alarm, and operation personnel are prompted that a certain UPS power supply system fails.
(3) The automatic switching function: the contactor acts, and a normally running device replaces another UPS power supply system to realize the automatic switching function.
The singlechip control in the embodiment of the invention controls the action of the relay by receiving the detection signal of the detection unit to realize the opening and closing of the switch, the control instruction is logic operation, the control can be realized by the singlechip, the operation is simple, and the use of software programs is not involved.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person of ordinary skill in the art can make modifications or equivalents to the specific embodiments of the present invention with reference to the above embodiments, and such modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims of the present invention as set forth in the claims.
Claims (6)
1. The utility model provides a device for alarming of autonomy between independent UPS of transformer substation which characterized in that includes:
the detection unit is used for collecting voltage and current signals on the first UPS power supply system, the second UPS power supply system and a power supply line;
the control unit receives the detection signal of the detection unit and outputs a control signal;
the alarm unit is used for sending out fault alarm information;
the power supply unit is used for providing working voltage of the control unit;
the driving output unit is arranged on the supply line and used for receiving the control signal of the control unit and executing switching action;
the output end of the detection unit is connected with the control unit, the output end of the control unit is connected with the driving output unit and the alarm unit, and the output end of the power supply unit is connected with the control unit.
2. The device for alarming of automatic switching between independent UPSs of a substation according to claim 1, wherein the driving output unit comprises a first output module and a second output module;
the first output module is arranged on a first UPS power supply system, and the second output module is arranged on a second UPS power supply system;
the first output module comprises a first fuse, a first contactor and a first air switch; the first fuse is connected with the first contactor in series and then connected with the output end of a first UPS power supply system in parallel, a first air switch is connected on the first UPS power supply system in series, and the output end of the first air switch is connected with the first contactor;
the second output module comprises a second fuse, a second contactor and a second air switch; the second fuse is connected with the output end of a second UPS power supply system in parallel after being connected with the second contactor in series, a second air switch is connected on the second UPS power supply system in series, and the output end of the second air switch is connected with a second contactor controller.
3. The device of claim 1, wherein the detection module comprises:
the first voltage and current detector is arranged at the output end of the first UPS power supply system;
the second voltage and current detector is arranged at the output end of the second UPS power supply system;
a third voltage-current detector provided on the power supply line;
and the output ends of the first voltage current detector, the second voltage current detector and the third voltage current detector are connected with the controller through AD converters.
4. The device for alarming of automatic switching between independent UPSs of a transformer substation according to claim 1, characterized in that the controller is an AT89S51 type single chip microcomputer, and the output end of the controller is connected with the first contactor and the second contactor.
5. The device of claim 1, wherein the alarm unit comprises an audible and visual alarm and a remote transmission module, and the output end of the controller is connected to the audible and visual alarm and the remote transmission module.
6. The device for alarming of automatic switching between independent UPSs of a transformer substation according to claim 1, wherein the power supply unit adopts a rechargeable battery, and the rechargeable battery is connected with a power supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168007.3A CN110707809A (en) | 2019-11-25 | 2019-11-25 | Automatic switching alarm device between independent UPS of transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168007.3A CN110707809A (en) | 2019-11-25 | 2019-11-25 | Automatic switching alarm device between independent UPS of transformer substation |
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| Publication Number | Publication Date |
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| CN110707809A true CN110707809A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911168007.3A Pending CN110707809A (en) | 2019-11-25 | 2019-11-25 | Automatic switching alarm device between independent UPS of transformer substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178941A (en) * | 2021-04-29 | 2021-07-27 | 国网山东省电力公司安丘市供电公司 | Standby power supply system for intelligent electric energy meter |
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2019
- 2019-11-25 CN CN201911168007.3A patent/CN110707809A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178941A (en) * | 2021-04-29 | 2021-07-27 | 国网山东省电力公司安丘市供电公司 | Standby power supply system for intelligent electric energy meter |
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Application publication date: 20200117 |