CN212231158U - Control system 220V redundant power supply system - Google Patents
Control system 220V redundant power supply system Download PDFInfo
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- CN212231158U CN212231158U CN202020934590.6U CN202020934590U CN212231158U CN 212231158 U CN212231158 U CN 212231158U CN 202020934590 U CN202020934590 U CN 202020934590U CN 212231158 U CN212231158 U CN 212231158U
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Abstract
The utility model provides a control system 220V redundant power supply system, including mains supply and UPS power, mains supply and UPS power insert static change over switch's input through input total circuit breaker, and the input of the total circuit breaker of output is connected to static change over switch's output, and the output of the total circuit breaker of output is connected to the input of load branch switch, and the output of load branch switch is connected to the load respectively, still connect second grade surge protector on the mains supply, tertiary surge protector is still connected to the output of the total circuit breaker of output. The utility model has the characteristics of the investment is little, and the power supply reliability is high, and the power supply quality is good, and the construction is simple.
Description
Technical Field
The utility model relates to a following industrial control system of 20kVA specifically is a redundant power supply system of control system 220V.
Background
SH/T3082-2003 Standard for petrochemical Instrument Power supply design: the scheme of single UPS + common power supply double-output loop power supply is suitable for supplying power to single set of process production device, auxiliary production device or control room or field cabinet room instrument of public engineering facilities with the power load of 20kVA or below.
The petrochemical instrument power supply design specification (promissory draft) revised on the basis of the above specifications further defines the instrument alternating current power supply configuration scheme: the scheme of single UPS and common AC power supply requires that one path of power supply of the instrument and the control system adopts UPS, the other path adopts common power supply, and the two power supply loops are mutually independent. The redundant power supplies of the instruments and the control system are respectively connected with two groups of mutually independent instrument power distribution cabinets, redundant electric equipment (such as a redundant switch) of a non-redundant power supply, two groups of operating stations of which the same operating subareas (or devices) are mutually redundant, and the like, and the power supply is respectively connected with two groups of mutually independent instrument power distribution cabinets. As shown in fig. 1, the 220V power supply system according to the wiring diagram of fig. 1 is widely applied to power supply of a control system of an industrial control system. As shown in the figure, the redundant power supply module DC-2 in the cabinet, part of the servers and part of the operation stations are supplied with mains power. The reliability of the power supply of the mains supply is poor, and the quality of the electric energy is inferior to that of the UPS. In practical application, the failure rate of the power supply module powered by commercial power is higher than that of the power supply module powered by the UPS. Especially, the long-distance pipeline station field which is widely supplied with power by the rural power grid has large fluctuation range of the mains voltage and extremely high power failure probability, and the failure rate of the power supply module is greatly improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a control system 220V redundant power supply system, the power supply reliability is high, and the power supply quality is good.
The technical scheme of the utility model:
the utility model provides a control system 220V redundant power supply system, includes mains supply and UPS power, mains supply and UPS power insert static change over switch's input through the input master breaker, and the input of the total circuit breaker of output is connected to static change over switch's output, and the output of the total circuit breaker of output is connected to the input of load branch switch, and the output of load branch switch is connected to the load respectively, still connect second grade surge protector on the mains supply, tertiary surge protector is still connected to the output of the total circuit breaker of output.
The static state change-over switch is provided with two, thereby two 220V power supplies are output, and the power supplies are respectively supplied to mutually redundant loads of the control system.
The capacity of the input total circuit breaker and the output total circuit breaker is 32A 2P.
The capacity of the load branch switch is 16A2P or 10A2P, so that the load with the capacity not switched on can be connected.
The UPS power output A is connected with a 1# static change-over switch in the static change-over switch to serve as a 1# static change-over switch main power supply, the UPS power output B is connected with a 2# static change-over switch in the static change-over switch to serve as a 2# static change-over switch main power supply, and the UPS power output C is connected with a non-specific important load to ensure three-phase load balance of the UPS power supply.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the investment cost is low, two single-phase change-over switches are adopted to switch the single UPS power supply and the commercial power supply, and two 220V power supplies with high reliability and excellent power supply quality are provided. Compared with the scheme of adopting a three-phase static change-over switch, the cost of each set is saved by about 6 ten thousand yuan. Compared with a double UPS power supply scheme, each set of UPS power supply scheme saves 15 ten thousand yuan of equipment investment cost and reduces later-period operation and maintenance cost.
2. The power supply reliability is high, and when the UPS breaks down, the important load can be switched to the mains supply without disturbance. When one static switch fails, the other static switch can ensure that the important load continues to be powered by the UPS.
3. The power supply quality is excellent, and under the normal condition, all loads are supplied with power by the UPS, thereby ensuring the power supply quality, reducing the load failure rate and achieving the power supply effect of the double UPS power supplies.
4. Construction convenience, single-phase auto-change over device size is little, and the surplus space of festival mountable other equipment in the switch board. The single UPS and the commercial power are switched, so that the storage space of a set of UPS power supply and battery is reduced.
Drawings
Fig. 1 is a schematic diagram of an ac power supply configuration scheme of a conventional meter.
Fig. 2 is a schematic diagram of the system structure of the present invention.
Fig. 3 is a schematic view of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 2, the present invention provides a technical solution:
the utility model provides a control system 220V redundant power supply system, includes mains supply 1 and UPS power supply 2, mains supply 1 and UPS power supply 2 insert static change over switch 4's input through input master breaker 3, and the input of output master breaker 5 is connected to static change over switch 4's output, and the output of output master breaker 5 is connected to load branch switch 7's input, and load branch switch 7's output is connected to load 8 respectively, still connect second grade surge protector 6 on mains supply 1, tertiary surge protector 9 is still connected to output master breaker 5's output. The time t of the static overvoltage starting to act on the second-stage surge protector 6 to the actual opening and discharging moment of the second-stage surge protector 6 is less than or equal to 50ns, and the time t of the static overvoltage starting to act on the third-stage surge protector 9 to the actual opening and discharging moment of the third-stage surge protector 9 is less than or equal to 25 ns.
The static selector switches 4 are provided with two, so that two 220V power supplies are output to respectively supply power to mutually redundant loads of the control system.
The capacity of the input main breaker 3 and the output main breaker 5 is 32 A2P.
The capacity of the load tap switch 7 is 16A2P or 10A2P, so as to connect the load 8 with no capacity.
The output A of the UPS 2 is connected with a 1# static selector switch in the static selector switch 4 to serve as a main power source of the 1# static selector switch, the output B of the UPS 2 is connected with a 2# static selector switch in the static selector switch 4 to serve as a main power source of the 2# static selector switch, and the output C of the UPS 2 is connected with a non-specific important load to ensure three-phase load balance of the UPS 2.
2 single-phase dual supply static transfer switch 4, the main parameter is:
| input/output request | The input is connected with the terminal, and the output provides 4 paths of 10A C13 and 4 paths of 16A C19 |
| Input source | Two-way input |
| Input mode | |
| 1+N+PE | |
| Voltage range | 150-300VAC |
| Frequency of | ±5Hz |
| Rated current | 32A |
| Number of connection poles | 2P |
| Type of incoming power | Different UPS or UPS + mains supply |
| Switching time | PC level is less than or equal to 10 milliseconds |
| Circulating current between power supplies during conversion | Is free of |
| Conversion mode | Has two conversion modes of automatic and manual |
| Overload capability | 125 percent rated current can be borne within 30 minutes |
| Mounting means | Rack mount |
| Protection class | IP20 |
| Alarm function | Is provided with |
| Power-off lock for power supply | When the standby power supply loses power, the change-over switch should not act |
A phase and B phase of a single-phase power supply output by the 20kVAUPS are connected to the static selector switch 4;
a phase and B phase of single-phase power supply provided by 380V commercial power output from a power distribution room are connected to a static selector switch 4;
the static selector switch 4 switches the UPS 1 and the commercial power 2 and supplies power to various loads through the output main breaker 5.
With continued reference to FIG. 3, an exemplary 220V power scheme for a below 20kVA control system
And setting the static change-over switch into an automatic change-over mode. In normal operation, the #1 static transfer switch is powered by the phase A of the main power UPS, and the #2 static transfer switch is powered by the phase B of the main power UPS. All particularly important loads of the control system are supplied with power by the UPS, and the commercial power serves as a standby power supply. Wherein, the power supply of the equipment without redundant power supply module, such as operation station, auxiliary network, server, etc., is provided by a static switch device, and the same kind of equipment is provided with power supply by different static switches respectively. For equipment with redundant power supply modules, such as production network equipment, mass flow meters (combustible gas alarm controllers) and the like, two power supplies are respectively provided with power supplies by different static transfer switch devices. For a 24V instrument power supply in the cabinet, a PLC system CPU power supply and a PLC rack power supply in the cabinet which are mutually redundant power supplies, different static state change-over switch devices respectively provide power supplies, and for non-specific important equipment in the cabinet, only one static state change-over switch device provides power supplies.
For non-particularly important equipment such as a video monitoring system, an office network system and the like, the UPS device C is used for supplying power.
According to the scheme, the control system 220V power supply system can be ensured to have extremely high reliability, and the fault analysis is shown in the following table:
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A control system 220V redundant power supply system is characterized in that: including mains supply (1) and UPS power supply (2), mains supply (1) and UPS power supply (2) insert the input of static change over switch (4) through input master breaker (3), and the input of output master breaker (5) is connected to the output of static change over switch (4), and the output of output master breaker (5) is connected to the input of load branch switch (7), and the output of load branch switch (7) is connected to load (8) respectively, still connect second grade surge protector (6) on mains supply (1), tertiary surge protector (9) are still connected to the output of output master breaker (5).
2. The 220V redundant power supply system of a control system according to claim 1, wherein: the static selector switches (4) are provided with two, so that two 220V power supplies are output to respectively supply power to mutually redundant loads of the control system.
3. The 220V redundant power supply system of a control system according to claim 1, wherein: the capacity of the input main breaker (3) and the output main breaker (5) is 32A 2P.
4. The 220V redundant power supply system of a control system according to claim 2, wherein: the capacity of the load branch switch (7) is 16A2P or 10A2P, so as to connect a load (8) with a non-capacity.
5. The 220V redundant power supply system of a control system according to claim 2, wherein: the output A of the UPS (2) is connected with a #1 static transfer switch in the static transfer switch (4) to serve as a #1 static transfer switch main power supply, the output B of the UPS (2) is connected with a #2 static transfer switch in the static transfer switch (4) to serve as a #2 static transfer switch main power supply, and the output C of the UPS (2) is connected with a non-specific important load to ensure three-phase load balance of the UPS (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020934590.6U CN212231158U (en) | 2020-05-28 | 2020-05-28 | Control system 220V redundant power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020934590.6U CN212231158U (en) | 2020-05-28 | 2020-05-28 | Control system 220V redundant power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212231158U true CN212231158U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020934590.6U Active CN212231158U (en) | 2020-05-28 | 2020-05-28 | Control system 220V redundant power supply system |
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| Country | Link |
|---|---|
| CN (1) | CN212231158U (en) |
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- 2020-05-28 CN CN202020934590.6U patent/CN212231158U/en active Active
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