CN216252262U - Stand-alone UPS power supply and electrical equipment based on STS static switch - Google Patents
Stand-alone UPS power supply and electrical equipment based on STS static switch Download PDFInfo
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- CN216252262U CN216252262U CN202122646051.XU CN202122646051U CN216252262U CN 216252262 U CN216252262 U CN 216252262U CN 202122646051 U CN202122646051 U CN 202122646051U CN 216252262 U CN216252262 U CN 216252262U
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Abstract
The utility model relates to the technical field of UPS power supplies, and discloses a stand-alone UPS power supply and electrical equipment based on STS static switch, wherein the stand-alone UPS power supply comprises: the rectifier, the inverter, the primary STS static switch and the secondary STS static switch are connected in sequence; the common end of the rectifier and the inverter is connected with the storage battery; the other end of the inverter is connected with a first input end of the first-stage STS static switch, and a second input end of the first-stage STS static switch is connected with a bypass input end; the output end of the first-stage STS static switch is connected with the bypass input end; the second input end of the second-stage STS static switch is connected with a terminal commercial power; and the output end of the secondary STS static switch is connected with a load. The utility model realizes the redundant design of a single UPS, can achieve the parallel operation effect of two UPSs, meets the design and use requirements of a B-level machine room, and reduces the investment cost of enterprises; the fault switching time is short, and important loads are guaranteed not to lose power.
Description
Technical Field
The utility model relates to the technical field of UPS (uninterrupted power supply), in particular to a stand-alone UPS (uninterrupted power supply) based on an STS (station-to-station) static switch and electrical equipment.
Background
UPS (Uninterruptable Power supply), i.e., an uninterruptible Power supply. At present, a storage battery and a bypass power supply are designed for guaranteeing power supply reliability of a single-machine UPS, but when the UPS is in an internal state or an output fault occurs, the load is still powered off, and therefore two UPSs are usually adopted to supply power in parallel and redundantly for particularly important loads, and the enterprise investment cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a stand-alone UPS power supply and electrical equipment based on an STS static switch, aiming at improving the reliability of power supply of a machine room and solving the problem of important load power loss caused by UPS failure under the condition of single UPS power supply.
The technical scheme for solving the technical problems is as follows: a stand-alone UPS power supply based on STS static switching, comprising: the system comprises a rectifier, an inverter, a storage battery, a primary STS static switch and a secondary STS static switch;
one end of the rectifier is connected with the mains supply at the starting end through a first switch, the other end of the rectifier is connected with one end of the inverter, and the common end of the rectifier and the inverter is connected with the storage battery through a third switch; the other end of the inverter is connected with a first input end of the primary STS static switch, and a second input end of the primary STS static switch is connected with a bypass input end through a second switch; the output end of the first-stage STS static switch is connected with the bypass input end through a sixth switch and a fifth switch; the second input end of the second-stage STS static switch is connected with a terminal commercial power through a seventh switch; and the output end of the secondary STS static switch is connected with a load.
The utility model has the beneficial effects that: the utility model realizes the redundant design of a single UPS, can automatically switch the standby power supply after the UPS fails and outputs power failure, achieves the parallel operation effect of two UPSs, meets the design and use requirements of a B-level machine room, and reduces the investment cost of enterprises; the secondary STS static switch can monitor the UPS output in real time, the fault switching time is less than 8ms, and important loads are guaranteed not to lose power.
On the basis of the technical scheme, the utility model can be further improved as follows.
Further, the primary STS static switch includes a first static switch and a second static switch; the input end of the first static switch is connected with the other end of the inverter, the input end of the second static switch is connected with the bypass input end through the second switch, and the output ends of the first static switch and the second static switch are connected with the bypass input end through a sixth switch and a fifth switch.
The beneficial effect of adopting above-mentioned further scheme is, provide stable power for the load after passing rectification, contravariant, the static switch of one-level STS with the commercial power, after the commercial power is interrupted, supply power for the load through battery contravariant or static bypass.
Further, the secondary STS static switch includes a third static switch, a fourth static switch, and a manual switch; the input end of the third static switch is connected with a terminal mains supply through a seventh switch, and the input end of the fourth static switch is connected with the output end of the first-stage STS static switch through a sixth switch; the output end of the third static switch is connected with the output end of the fourth static switch; the stiff end of hand switch all is connected with third static switch's input and fourth static switch's input, hand switch's output with the common port of third static switch's output and fourth static switch's output is connected, and connects the load.
The beneficial effect of adopting the above further scheme is that, the secondary STS static switch, one way connects UPS output, establishes as the main power, and another way connects independent commercial power, establishes as the stand-by power. The secondary STS static switch can monitor the UPS output in real time, when the UPS fails to cause output power loss or current exceeds a protection fixed value, the secondary STS static switch rapidly switches the main power to standby power, the emergency switching is preferentially switched or inhibited, the switching time is less than 8ms, and the load is guaranteed not to lose power.
In order to solve the technical problem, the utility model also provides electrical equipment which comprises the stand-alone UPS power supply based on the STS static switch.
Drawings
FIG. 1 is a circuit diagram of a stand-alone UPS based on STS static switches according to an embodiment of the present invention;
fig. 2 is a structural diagram of a two-stage STS static switch circuit provided by the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1, a stand-alone UPS power supply based on STS static switch includes: rectifier 1, inverter 2, battery 3, one-level STS static switch 4 and second grade STS static switch 5. One end of the rectifier 1 is connected with the initial commercial power through a first switch S1, the other end of the rectifier 1 is connected with one end of the inverter 2, and the common end of the rectifier 1 and the inverter 2 is connected with the storage battery 3 through a third switch S3; the other end of the inverter 2 is connected with a first input end of the first-stage STS static switch 4, and a second input end of the first-stage STS static switch 4 is connected with a bypass input end through a second switch S2; the output end of the first-stage STS static switch 4 is connected with the bypass input end through a sixth switch S6 and a fifth switch S5; the second input end of the second-stage STS static switch 5 is connected with a terminal mains supply through a seventh switch S7; the output terminal of the secondary STS static switch 5 is connected to a load. The inverter switch S4 controls the operation of the inverter 2.
In the embodiment, the redundant design of a single UPS is realized, and after the UPS fails and outputs power failure, the standby power supply can be automatically switched, so that the parallel operation effect of two UPSs is achieved, the design and use of a B-level machine room are met, and the investment cost of an enterprise is reduced; the secondary STS static switch can monitor the UPS output in real time, the fault switching time is less than 8ms, and important loads are guaranteed not to lose power.
Optionally, the primary STS static switch 4 includes a first static switch and a second static switch; the input end of the first static switch is connected with the other end of the inverter, the input end of the second static switch is connected with the bypass input end through the second switch, and the output ends of the first static switch and the second static switch are connected with the bypass input end through the sixth switch S6 and the fifth switch S5.
In the above embodiment, the mains supply is rectified, inverted and subjected to the first-stage STS static switch to provide a stable power supply for the load, and the mains supply is interrupted and then subjected to the inversion or static bypass of the storage battery to supply power to the load.
Alternatively, as shown in fig. 2, the secondary STS static switch 5 includes a third static switch 51, a fourth static switch 52, and a manual switch 53; the input end of the third static switch 51 is connected with the terminal mains supply through a seventh switch S7, and the input end of the fourth static switch 52 is connected with the output end of the first-stage STS static switch 4 through a sixth switch S6; the output terminal of the third static switch 51 is connected with the output terminal of the fourth static switch 52; the fixed end of the manual switch 53 is connected to both the input end of the third static switch 51 and the input end of the fourth static switch 52, and the output end of the manual switch 53 is connected to the common end of the output end of the third static switch 51 and the output end of the fourth static switch 52 and is connected to the load.
In the above embodiment, one of the two stages of STS static switches is connected to the UPS output and is set as the main power supply, and the other is connected to the independent utility power and is set as the backup power supply. The secondary STS static switch can monitor the UPS output in real time, when the UPS fails to cause output power loss or current exceeds a protection fixed value, the secondary STS static switch rapidly switches the main power to standby power, the emergency switching is preferentially switched or inhibited, the switching time is less than 8ms, and the load is guaranteed not to lose power.
The secondary STS static switch is equipped with an interlocking manual service switch through which switching can be done without interruption for service. The input, output and by-pass power terminals of the secondary STS static switch are isolated during service to safely maintain any components within the secondary STS static switch while the system is in the by-pass.
The utility model also provides electrical equipment which comprises the stand-alone UPS power supply based on the STS static switch provided by the embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A stand-alone UPS power supply based on STS static switch, comprising: the system comprises a rectifier, an inverter, a storage battery, a primary STS static switch and a secondary STS static switch;
one end of the rectifier is connected with the mains supply at the starting end through a first switch, the other end of the rectifier is connected with one end of the inverter, and the common end of the rectifier and the inverter is connected with the storage battery through a third switch; the other end of the inverter is connected with a first input end of the primary STS static switch, and a second input end of the primary STS static switch is connected with a bypass input end through a second switch; the output end of the first-stage STS static switch is connected with the bypass input end through a sixth switch and a fifth switch; the second input end of the second-stage STS static switch is connected with a terminal commercial power through a seventh switch; and the output end of the secondary STS static switch is connected with a load.
2. A stand-alone UPS power supply based on STS static switch as claimed in claim 1 wherein said primary STS static switch includes a first static switch and a second static switch; the input end of the first static switch is connected with the other end of the inverter, the input end of the second static switch is connected with the bypass input end through the second switch, and the output ends of the first static switch and the second static switch are connected with the bypass input end through a sixth switch and a fifth switch.
3. A stand-alone UPS power supply based on STS static switch according to claim 1 or 2, wherein the secondary STS static switch comprises a third static switch, a fourth static switch and a manual switch; the input end of the third static switch is connected with a terminal mains supply through a seventh switch, and the input end of the fourth static switch is connected with the output end of the first-stage STS static switch through a sixth switch; the output end of the third static switch is connected with the output end of the fourth static switch; the stiff end of hand switch all is connected with third static switch's input and fourth static switch's input, hand switch's output with the common port of third static switch's output and fourth static switch's output is connected, and connects the load.
4. An electrical apparatus comprising the STS static switch based stand-alone UPS power supply of any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646051.XU CN216252262U (en) | 2021-11-01 | 2021-11-01 | Stand-alone UPS power supply and electrical equipment based on STS static switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646051.XU CN216252262U (en) | 2021-11-01 | 2021-11-01 | Stand-alone UPS power supply and electrical equipment based on STS static switch |
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| Publication Number | Publication Date |
|---|---|
| CN216252262U true CN216252262U (en) | 2022-04-08 |
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| CN202122646051.XU Active CN216252262U (en) | 2021-11-01 | 2021-11-01 | Stand-alone UPS power supply and electrical equipment based on STS static switch |
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2021
- 2021-11-01 CN CN202122646051.XU patent/CN216252262U/en active Active
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