CN202712963U - Control device for low-voltage power distribution power source switching - Google Patents
Control device for low-voltage power distribution power source switching Download PDFInfo
- Publication number
- CN202712963U CN202712963U CN 201220280317 CN201220280317U CN202712963U CN 202712963 U CN202712963 U CN 202712963U CN 201220280317 CN201220280317 CN 201220280317 CN 201220280317 U CN201220280317 U CN 201220280317U CN 202712963 U CN202712963 U CN 202712963U
- Authority
- CN
- China
- Prior art keywords
- switch
- frame switch
- frame
- interconnection
- state detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
A control device for low-voltage power distribution power source switching comprises a first frame switch and a second frame switch, wherein an interconnection switch is connected between the input end of the first frame switch and the input end of the second frame switch; a first power source is connected with a first voltage sampling relay; a second power source is connected with a second voltage sampling relay; the first frame switch is connected with a first frame switch state detector; the second frame switch is connected with a second frame switch state detector; the interconnection switch is connected with an interconnection switch state detector; the first voltage sampling relay, the second voltage sampling relay, the first frame switch state detector, the second frame switch state detector and the interconnection switch state detector are connected to a PLC central controller; the PLC central controller is connected to an output relay; and the output relay is connected with the first frame switch, the second frame switch and the interconnection switch respectively. The control device for low-voltage power distribution power source switching has a simple structure and a high degree of automation.
Description
Technical field
The utility model belongs to the technical field of low-voltage distribution electrical source exchange, relates in particular to a kind of low-voltage distribution power switch control device.
Background technology
Because more and more higher to the power supply reliability requirement, electric power system often adopts two or more power supplys to power, and takes each other suitable active-standby mode.Under normal circumstances, each power supply is powered to load separately respectively; After electric power system fault or other reason force a certain main power source to disconnect, require automatically, rapidly other normal power source devoted oneself to work, thereby guarantee the continuity of powering.After this, if when main power source recovers normal, automatically cut off stand-by power supply by actual demand, switch back again the main power source power supply.
The control mode of conventional low power distribution switching control is to utilize the serial or parallel connection of relay mechanical contact, consist of corresponding control loop by hardware connection, have the following disadvantages: line is many and complicated, equipment volume is large, and power consumption is large, and switch motion is slow, the contact is fragile, the reconfiguration trouble, flexibility is relatively poor, and manufacturing cost is high.
Along with the development of modern electric power industry and the construction retrofit of electrical network, the scale of electric power system is increasing, structure becomes increasingly complex, performance requirement is more and more higher, requirement for " power supply drops into automatically and (no) recovered " logical relation also becomes increasingly complex, and the low-voltage distribution power switch control device of traditional Control has been difficult to adaption demand.
The utility model content
The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of low-voltage distribution power switch control device is provided, and it is simple in structure, and automaticity is high.
Its purpose can realize by following scheme: this low-voltage distribution power switch control device comprises the first frame switch, the second frame switch, the input of the first frame switch connects the first outside power supply, the input of the second frame switch connects outside second source, the output of the first frame switch is connected to the first outside load, the output of the second frame switch is connected to the second outside load, its main feature is, is connected with interconnection switch between the input of the input of the first frame switch and the second frame switch; The first power supply is connected with the first voltage sampling relay, and second source is connected with the second voltage sample relay; The first frame switch is connected with the first frame switch state detector, and the second frame switch is connected with the second frame switch state detector, and interconnection switch is connected with the interconnection switch state detector; Also be provided with PLC central controller and output relay, described the first voltage sampling relay, second voltage sample relay, the first frame switch state detector, the second frame switch state detector, interconnection switch state detector are connected respectively to the PLC central controller, the PLC central controller is connected to output relay, and output relay connects respectively the first frame switch, the second frame switch, interconnection switch.
Described PLC central controller also is connected with control mode and selects module; The first frame switch is connected with the first button, and the second frame switch is connected with the second button, and interconnection switch is connected with the 3rd button, and the first button, the second button, the 3rd button all are connected to the PLC central controller.
Be provided with blocking mechanism between the first frame switch, the second frame switch, the interconnection switch.
The utlity model has following advantage and effect:
One, the PLC central controller is monitored each switch running status by the first frame switch state detector, the second frame switch state detector, interconnection switch state detector; The PLC central controller is monitored the state of two power supplys by the first voltage sampling relay, second voltage sample relay, power supply status is normal, under-voltage, phase shortage all overvoltage sample relay state judge; Under normal circumstances, the PLC central controller makes interconnection switch be in off-state, and two power supplys are powered to load separately respectively; After a certain main power source of electric power system broke down problem, the PLC central controller was according to control mode and system's current state driver output relay, and output relay is controlled each frame switch or interconnection switch deciliter action, thereby realized the switching of power supply.
Two, compare with conventional art, the utlity model has following characteristics: 1, simple in structure, equipment volume is little, take up room less, power consumption is little, and cost is low, the whole system expense is below 3000 yuan, and traditional control device one is enclosed within more than 7000 yuan, also need to cooperate with it by other components and parts; 2, line is simple, and number of contacts is few, and operational reliability is high; 3, automaticity is high, need not the personnel guard, can realize remote control with upper machine communication; 4, can reach multiple control modes: manually control, haul oneself willingly into not runback, haul oneself willingly into runback; Applicable to various control requirements, flexibility is good.
Description of drawings
Fig. 1 is mode of connection schematic diagram under the syndeton of a kind of specific embodiment of the utility model and the use state.
Embodiment
Shown in Figure 1, this low-voltage distribution power switch control device comprises the first frame switch, the second frame switch, the input of the first frame switch connects the first outside power supply, the input of the second frame switch connects outside second source, the output of the first frame switch is connected to the first outside load, the output of the second frame switch is connected to the second outside load, is connected with interconnection switch between the input of the input of the first frame switch and the second frame switch; The first power supply is connected with the first voltage sampling relay, and second source is connected with the second voltage sample relay; The first frame switch is connected with the first frame switch state detector, and the second frame switch is connected with the second frame switch state detector, and interconnection switch is connected with the interconnection switch state detector; Also be provided with PLC central controller and output relay, described the first voltage sampling relay, second voltage sample relay, the first frame switch state detector, the second frame switch state detector, interconnection switch state detector are connected respectively to the PLC central controller, the PLC central controller is connected to output relay, and output relay connects respectively the first frame switch, the second frame switch, interconnection switch.The PLC central controller also is connected with control mode and selects module; The first frame switch is connected with the first button, and the second frame switch is connected with the second button, and interconnection switch is connected with the 3rd button, and the first button, the second button, the 3rd button all are connected to the PLC central controller.
Above-described embodiment operation principle is as follows: under normal circumstances, the PLC central controller makes interconnection switch be in off-state, and the first power supply is responsible for the first load is powered, and second source is responsible for the second load is powered; After a certain main power source of electric power system broke down problem, frame switch that can this main power source is corresponding cut off, and made interconnection switch closed, was temporarily all powered to two loads by another main power source.
The mode of above-mentioned power supply switching can select module to select by control mode, and the PLC central controller is controlled switching according to selection mode, and concrete control mode is as follows:
One, haul oneself willingly into not runback control mode:
1,When two transformers normal power supply all, the first frame switch, the second frame switch all are in "on" position, and interconnection switch is in gate-dividing state;
When cutting off the power supply if 2 first power supplys break down problem, PLC central controller order output relay divides the first frame switch, interconnection switch is closed in time-delay again, supplies with the first load, the second load by second source, and system does not carry out switching when the first power up is powered;
Switching action when 3, second source breaks down is similar with the 2nd.
Two, haul oneself willingly into the runback control mode:
1,When two transformers normal power supply all, the first frame switch, the second frame switch all are in "on" position, and interconnection switch is in gate-dividing state;
When cutting off the power supply if 2 first power supplys break down problem, PLC central controller order output relay divides the first frame switch, and interconnection switch is closed in time-delay again, supplies with the first load, the second load by second source; When the first power up was powered, PLC central controller order output relay divided interconnection switch, closes the first frame switch again, and the first load restoration is by the first Power supply;
Switching action when 3, second source breaks down is similar with the 2nd.
Three, manual control mode:
The PLC central controller is the driver output relay not, and the first frame switch, the second frame switch, interconnection switch are manually controlled divide-shut brake by the first button, the second button, the 3rd button respectively.
Be provided with blocking mechanism between above-mentioned the first frame switch, the second frame switch, the interconnection switch.No matter under which kind of control mode, carry out locking between three switches, can only close simultaneously wherein any two.
Claims (3)
1. low-voltage distribution power switch control device, comprise the first frame switch, the second frame switch, the input of the first frame switch connects the first outside power supply, the input of the second frame switch connects outside second source, the output of the first frame switch is connected to the first outside load, the output of the second frame switch is connected to the second outside load, it is characterized in that: be connected with interconnection switch between the input of the input of the first frame switch and the second frame switch; The first power supply is connected with the first voltage sampling relay, and second source is connected with the second voltage sample relay; The first frame switch is connected with the first frame switch state detector, and the second frame switch is connected with the second frame switch state detector, and interconnection switch is connected with the interconnection switch state detector; Also be provided with PLC central controller and output relay, described the first voltage sampling relay, second voltage sample relay, the first frame switch state detector, the second frame switch state detector, interconnection switch state detector are connected respectively to the PLC central controller, the PLC central controller is connected to output relay, and output relay connects respectively the first frame switch, the second frame switch, interconnection switch.
2. low-voltage distribution power switch control device according to claim 1 is characterized in that: described PLC central controller also is connected with control mode and selects module; The first frame switch is connected with the first button, and the second frame switch is connected with the second button, and interconnection switch is connected with the 3rd button, and the first button, the second button, the 3rd button all are connected to the PLC central controller.
3. low-voltage distribution power switch control device according to claim 1 and 2 is characterized in that: be provided with blocking mechanism between the first frame switch, the second frame switch, the interconnection switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280317 CN202712963U (en) | 2012-06-14 | 2012-06-14 | Control device for low-voltage power distribution power source switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280317 CN202712963U (en) | 2012-06-14 | 2012-06-14 | Control device for low-voltage power distribution power source switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712963U true CN202712963U (en) | 2013-01-30 |
Family
ID=47593228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220280317 Expired - Fee Related CN202712963U (en) | 2012-06-14 | 2012-06-14 | Control device for low-voltage power distribution power source switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202712963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427478A (en) * | 2013-06-25 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Power source cross power supply system |
| CN105337401A (en) * | 2015-11-24 | 2016-02-17 | 王容 | Intelligent double-power switching system |
-
2012
- 2012-06-14 CN CN 201220280317 patent/CN202712963U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427478A (en) * | 2013-06-25 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Power source cross power supply system |
| CN103427478B (en) * | 2013-06-25 | 2016-08-10 | 深圳市英威腾电气股份有限公司 | A kind of power supply crossfeed system |
| CN105337401A (en) * | 2015-11-24 | 2016-02-17 | 王容 | Intelligent double-power switching system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202363966U (en) | Automatic switching device for emergency power supply | |
| CN202712963U (en) | Control device for low-voltage power distribution power source switching | |
| CN204103589U (en) | A kind of double-power supply switching device | |
| CN201576957U (en) | Variable frequency power supply control system of low-voltage motor | |
| CN112072741B (en) | Method and device for realizing one-key starting of household energy storage system | |
| CN103825296B (en) | A kind of grid-connected dual power supply of distributed power source distributes interface device | |
| CN205407409U (en) | Novel intelligence low voltage distribution system | |
| CN203071647U (en) | Low-voltage switch cabinet automatic input and recovery device | |
| CN203871919U (en) | Fast switching system of power sources | |
| CN202840676U (en) | Low-voltage double-power-supply automatic switching device | |
| CN101969225A (en) | Dual-circuit automatic mutual-switching power system without break points | |
| CN202696279U (en) | Circuit breaker controller with dual-power changeover function and dual-power switching system | |
| CN202363969U (en) | Novel complete equipment for automatically switching backup power supply | |
| CN201904648U (en) | Power supply device for dual-power three-phase motor | |
| CN202374043U (en) | Intelligent control device for ring main unit | |
| CN201910663U (en) | Three-power automatic switching control device | |
| CN201717670U (en) | Dual-power-supply switching device with overvoltage protection | |
| CN211930338U (en) | Remote intelligent monitoring system for power supply control power supply | |
| CN201690265U (en) | PLC relay switching dual power supply | |
| CN202997684U (en) | Multi-power-supply automatic conversion system | |
| CN208738853U (en) | A kind of tandem type is multi-functional from grid-connected energy-storage system | |
| CN109510301B (en) | Mixed type dual power supply conversion circuit and dual power supply system | |
| CN202474857U (en) | Intelligent distribution network with failure automatic isolation and self-clearing functions | |
| CN203326701U (en) | Automatic control converting power source preventing power interruption and transient voltage sag for production equipment | |
| CN201656555U (en) | Three-power-supply automatic switching-over device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20210614 |