CN208955742U - Meet the preposition access device of the special transformer terminals of phase three-wire three of dual power supply - Google Patents
Meet the preposition access device of the special transformer terminals of phase three-wire three of dual power supply Download PDFInfo
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- CN208955742U CN208955742U CN201821985583.8U CN201821985583U CN208955742U CN 208955742 U CN208955742 U CN 208955742U CN 201821985583 U CN201821985583 U CN 201821985583U CN 208955742 U CN208955742 U CN 208955742U
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- 230000015556 catabolic process Effects 0.000 claims description 3
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Abstract
The utility model discloses a kind of preposition access device of special transformer terminals of the phase three-wire three for meeting dual power supply, active/standby power input administrative unit accesses main power circuit secondary line and backup power source secondary line simultaneously；Main power circuit secondary line is connect on the normally closed node of relay K4 by voltage transformer TV1；Stand-by power supply circuit secondary line is connect on the coil of the normally opened node of relay K4 and relay K4 respectively by voltage transformer TV2.The utility model is by increasing front device on the special transformer terminals of phase three-wire three, which inputs active and standby two-way power supply, as long as active and standby two-way has electricity all the way, it is ensured that terminal has electricity.Special transformer terminals can be linked into running secondary circuit using it simultaneously, the stable power-supplying for realizing special transformer terminals in the case where single supply or dual power supply can be completed.
Description
Technical field
The utility model relates to electrical equipment technical fields more particularly to a kind of phase three-wire three for meeting dual power supply specially to become eventually
The preposition access device at end.
Background technique
The electric quantity acquisition of the special transformer terminals of dual power supply phase three-wire three uses very universal in current social, is mainly used in small
Area, bank, megastore etc..The place used is mostly comparatively relatively high to electrical power demand, this place once appearance
Power-off can bring many problems, such as banking system, it is possible that the loss etc. of customer information.Dual power supply visitor
Presently, there are two comparison stubborn problems are urgently to be resolved, first is how intelligence switches standby usage power supply for family acquisition, realizes nothing
Seam connection, second is how accurately to be acquired to the electricity of client, guarantees that the property of country is not suffered a loss.
Currently, the metering device mode of connection for dual power supply user is as shown in Figure 1, the buckling rheology of main power supply is secondary
It flanks and becomes owner of watt-hour meter and main for terminal, the buckling rheology secondary side access available ammeter and available terminal of available power supply.Main confession
Power outage then main watt-hour meter and main for the equal power loss of terminal, available power outage then available ammeter and main for the equal power loss of terminal.Mesh
Two methods of preceding main use solve the above problems: the secondary circuit outlet of 1. master spare circuit voltage transformers is in parallel, a line
When road transport row, the metering device of extension wire also available voltage (as shown in Figure 2).2. in route I, II metered voltage circuit
In serially add control device (contactor) I, II, control device outlet is each other (as shown in Figure 3) in parallel.When route I is powered, TV1
The electrification of metered voltage circuit, control device I closure, and disconnect control device II；When route II is powered, TV2 metering electricity
Road electrification is pushed back, control device II is closed, and disconnects control device I.Since control device I, II outlet are in parallel, as long as having
One group of voltage transformer operation, the electric energy meter and load control terminal in two Sets of Measurement circuits can obtain voltage.
But the first dual power supply client's electric quantity acquisition method have the disadvantage that need manually go switching lead
Backup power source, it is inefficient.Second of dual power supply client's electric quantity acquisition method, which has the disadvantage that, is carrying out standby usage power supply
Contactor is used when switching, in practical applications, the service life of contactor is shorter, and route when using contactor
It is relative complex, it has not been convenient to repair.
Accordingly, it is badly in need of a kind of simplified dual power supply client electric quantity acquisition line construction at present, reduces expiring for later period maintenance difficulty
The preposition access device of the special transformer terminals of the phase three-wire three of sufficient dual power supply.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of simplified dual power supply client electric quantity acquisition route knots
Structure, reduce later period maintenance difficulty the special transformer terminals of phase three-wire three for meeting dual power supply preposition access device.
The utility model solves above-mentioned technical problem using following technical scheme:
A kind of preposition access device for the special transformer terminals of phase three-wire three meeting dual power supply, including active/standby power input management
Unit, detection protection circuit, main control unit and power supply output management unit；
Wherein, the active/standby power input administrative unit accesses main power circuit secondary line and backup power source two simultaneously
Secondary line；Main power circuit secondary line is connect on the normally closed node of relay K4 by voltage transformer TV1；Stand-by power supply circuit
Secondary line is connect on the coil of the normally opened node of relay K4 and relay K4 respectively by voltage transformer TV2.
The detection protection circuit includes input relay and detection circuit, for detecting main power supply tape electricity situation,
Main control unit detects master spare circuit and charges situation, and controls power supply output management unit according to testing result；
The active/standby power input administrative unit output end is connect with the input terminal of main control unit, power supply output management
The output end that the input terminal of unit inputs administrative unit output end and main control unit with main power source respectively is connect, power supply output management
The output end that the input terminal of unit inputs administrative unit output end and main control unit with stand-by power source respectively simultaneously is connect；
One of preferred embodiment as the utility model, the input relay include relay K5 and relay K6；After
Electric appliance K6 connects on route of the route one by voltage transformer TV1, and relay K5 connects in route two-way overvoltage mutual inductor TV2
Route on.
One of preferred embodiment as the utility model, the power supply output management unit includes output relay and control
Circuit, when system worked well and when main power supply has electricity, power supply output management Unit selection main power source is as rear class electricity consumption
Equipment input；When main power line is not charged, main control unit is by control optocoupler, so that backup power source be selected to use as rear class
Electric equipment input, finally ensures that rear class electrical equipment being capable of safe and stable operation.
One of preferred embodiment as the utility model, the power supply output management unit is through control circuit and phase three-wire three
Special transformer terminals late-class circuit connection.
One of preferred embodiment as the utility model, the control circuit include relay K1, relay K2 and
Relay K3；The control terminal of the relay K1, relay K2 and relay K3 are connect with the main control unit；It is described after
The output end of electric appliance K1, relay K2 and relay K3 are connect with the special transformer terminals late-class circuit of phase three-wire three.
One of preferred embodiment as the utility model, the normally opened node and stand-by power supply circuit voltage of the relay K1
Outlet line connection, the normally opened node of relay K2 are connect with main power circuit voltage output lines, and the one of relay K3 is normally opened
Node is connect with main power circuit voltage output lines, another normally opened node is connect with stand-by power supply circuit voltage output lines.
One of preferred embodiment as the utility model, the main control unit are the STM32F103C8T6 monolithic of ARM company
Machine.
One of preferred embodiment as the utility model, the active/standby power input administrative unit and power supply output management
Multi-level protection circuit is provided between unit；The multi-level protection circuit includes TL523-4 optocoupler, Q1, Q2, Q3, Q4 composition
What interlocking mechanism and D1, D2 were provided prevents backward voltage breakdown effects, and ensures relay by using XOR gate chip
K1, K2 and K3 can ensure entirely to protect in single-chip microcontroller exception the integrality of circuit.
The invention also discloses a kind of preposition cut-in method of special transformer terminals of the phase three-wire three for meeting dual power supply, the party
Method the following steps are included:
S1, detection circuit detect the voltage of main power circuit, stand-by power supply circuit, and the voltage letter that will test
Breath is transmitted to main control unit；
S2, main control unit export high/low level according to the information of voltage received to control in power supply output management unit
The on/off state of output relay carries out the switching between main power circuit, stand-by power supply circuit.
The utility model compared with prior art the advantages of be: the utility model on the special transformer terminals of phase three-wire three by increasing
Add front device, which inputs active and standby two-way power supply, as long as active and standby two-way has electricity all the way, it is ensured that terminal has electricity.Benefit
Special transformer terminals can be linked into running secondary circuit with it simultaneously, the feelings in single supply or dual power supply can be completed
The stable power-supplying of special transformer terminals is realized under condition.It is connected to voltage detecting circuit on route between main power circuit and main control unit,
When voltage detecting circuit has detected voltage, the switch shape of relay is controlled by the high low state of main control unit output level
State realizes the intelligentized control method of entire circuit.
Detailed description of the invention
Fig. 1 is the situ metrology schematic diagram for the dual power supply electric quantity acquisition that background technology part is addressed in the utility model；
Fig. 2 is the schematic illustration for the existing primary, spare power supply switching that background technology part is addressed in the utility model；
Fig. 3 is that the principle of the active and standby power supply switching for the increase contactor that background technology part is addressed in the utility model is shown
It is intended to；
Fig. 4 is a kind of preposition access device structural schematic diagram of the special transformer terminals of phase three-wire three in the present embodiment；
Fig. 5 is a kind of situ metrology signal of the preposition access device installation of the special transformer terminals of phase three-wire three in the present embodiment
Figure；
Fig. 6 is the electrical block diagram of the preposition access device of the special transformer terminals of phase three-wire three in the present embodiment；
Fig. 7 is the structural schematic diagram of main power source input management and detection circuit in the present embodiment；
Fig. 8 is the structural schematic diagram of stand-by power source input management and detection circuit in the present embodiment；
Fig. 9 is the structural schematic diagram of main control unit circuit in the present embodiment；
Figure 10 is the structural schematic diagram of power supply output management element circuit in the present embodiment；
Figure 11 is the structural schematic diagram of circuit protection circuit in the present embodiment；
Figure 12 is a kind of flow diagram of the preposition cut-in method of the special transformer terminals of phase three-wire three in the present embodiment.
Specific embodiment
It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model
It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited
In following embodiments.
Embodiment 1
Referring to fig. 4-11: a kind of preposition access device of special transformer terminals of phase three-wire three meeting dual power supply of the present embodiment,
Including active/standby power input administrative unit, detection protection circuit, main control unit and power supply output management unit；
Wherein, the active/standby power input administrative unit accesses main power circuit secondary line and backup power source two simultaneously
Secondary line；Main power circuit secondary line is connect on the normally closed node of relay K4 by voltage transformer TV1；Stand-by power supply circuit
Secondary line is connect on the coil of the normally opened node of relay K4 and relay K4 respectively by voltage transformer TV2.
The detection protection circuit includes input relay and detection circuit, for detecting main power supply tape electricity situation,
Main control unit detects master spare circuit and charges situation, and controls (110V) power supply output management unit according to testing result；
The active/standby power input administrative unit output end is connect with the input terminal of main control unit, power supply output management
The output end that the input terminal of unit inputs administrative unit output end and main control unit with main power source respectively is connect, power supply output management
The output end that the input terminal of unit inputs administrative unit output end and main control unit with stand-by power source respectively simultaneously is connect；The present embodiment
By increasing front device on the special transformer terminals of phase three-wire three, which inputs active and standby two-way power supply, as long as active and standby two-way has one
Lu You electricity, it is ensured that terminal has electricity.Special transformer terminals can be linked into running secondary circuit simultaneously using it, it can
Complete the stable power-supplying that special transformer terminals are realized in the case where single supply or dual power supply.Between main power circuit and main control unit
Route on be connected to voltage detecting circuit, when voltage detecting circuit has detected voltage, pass through main control unit output level
The switch state of high low state control relay, realizes the intelligentized control method of entire circuit.
Referring to fig. 4-6, the input relay includes relay K5 and relay K6；Relay K6 connects to be passed through in route one
On the route of voltage transformer TV1, relay K5 is connect on the route of route two-way overvoltage mutual inductor TV2, and the power supply is defeated
Administrative unit includes output relay and control circuit out, when system worked well and when main power supply has electricity, power supply output
Administrative unit selects main power source to input as rear class electrical equipment；When main power line is not charged, main control unit passes through control
Optocoupler finally ensures that rear class electrical equipment being capable of safety and stability work so that backup power source be selected to input as rear class electrical equipment
Make, the power supply output management unit is connect through control circuit with the special transformer terminals late-class circuit of phase three-wire three.
Such as Fig. 6, the control circuit includes relay K1, relay K2 and relay K3；The relay K1, after
The control terminal of electric appliance K2 and relay K3 are connect with the main control unit；The relay K1, relay K2 and relay
The output end of device K3 is connect with the special transformer terminals late-class circuit of phase three-wire three, normally opened node and the backup power source electricity of the relay K1
The connection of road voltage output lines, the normally opened node of relay K2 are connect with main power circuit voltage output lines, relay K3's
One normally opened node connect with main power circuit voltage output lines, another normally opened node and stand-by power supply circuit voltage output lines
Connection.
Such as Fig. 9, the main control unit is the STM32F103C8T6 single-chip microcontroller of ARM company, this chip is using relatively advanced
Cortex-M3 kernel, and design needs can be met very well in conjunction with Peripheral Interface abundant, to keep circuit design simpler
It is single.The program storage area of its 256K byte can be applied in larger project file system.
Such as Figure 11, multi-stage protection is provided between the active/standby power input administrative unit and power supply output management unit
Circuit；The multi-level protection circuit includes TL523-4 optocoupler, what the interlocking mechanism and D1, D2 of Q1, Q2, Q3, Q4 composition provided
Backward voltage breakdown effects are prevented, and ensure that relay K1, K2 and K3 can be in single-chip microcontrollers by using XOR gate chip
Ensure entirely to protect the integrality of circuit when abnormal.In this way, providing input circuit voltage and current, output loop voltage and current
Multi-stage protection, improves the security reliability of circuit under the conditions of Various Complex.
Referring to Figure 12: the present embodiment also discloses a kind of preposition access side of special transformer terminals of the phase three-wire three for meeting dual power supply
Method, method includes the following steps:
S1, detection circuit detect the voltage of main power circuit, stand-by power supply circuit, and the voltage letter that will test
Breath is transmitted to main control unit；
S2, main control unit export high/low level according to the information of voltage received to control in power supply output management unit
The on/off state of output relay carries out the switching between main power circuit, stand-by power supply circuit.
Wherein, in the present embodiment dual power supply electric quantity collector the course of work specifically:
(1) when main power circuit charges, stand-by power supply circuit is without in electric situation:
Main power circuit by voltage transformer TV1 come electricity be crimped on relay K2, voltage detecting circuit connects online
Road one by voltage transformer TV1 come route on, when detection protection circuit detect voltage when, notify main control unit, monolithic
Machine is high level, CTRL3 high level to instruction CTRL2, and relay coil K2, K3 connect forming circuit, at this moment main power circuit
It powers simultaneously to main power source terminal and backup power source terminal, two pieces of terminals are all charged, can be in time the use in two pieces of terminals
Family electricity and other information are sent to main website.
(2) when stand-by power supply circuit is charged, main power circuit is without in electric situation:
Stand-by power supply circuit by voltage transformer TV2 come electricity be crimped on relay K1, voltage detecting circuit connects
Main power circuit by voltage transformer TV2 come route on, when detection protection circuit detect voltage when, notify master control list
Member, it is high level that single-chip microcontroller, which gives instruction CTRL1, CTRL3 is high level, and relay coil K1, K3 connect forming circuit, at this moment standby
Main power source terminal and backup power source terminal is given to power simultaneously with power circuit, two pieces of terminals are all charged, can be in time two pieces of ends
User's electricity and other information in end are sent to main website.
(3) main power circuit charges, in the case of stand-by power supply circuit electrification:
Main power circuit by voltage transformer TV1 come electricity be crimped on relay K2, detection protection circuit connect in master
Power circuit by voltage transformer TV1 come route on, when detection protection circuit detect voltage when, notify main control unit
40, single-chip microcontroller to instruction CTRL1, CTRL2 be high level, CTRL3 be low level, relay coil K1, K2 are respectively turned on shape
At circuit, at this moment main power circuit, stand-by power supply circuit are respectively main power source terminal, the power supply of backup power source power terminal.Two pieces
Terminal is all charged, can in time in two pieces of terminals user's electricity and other information be sent to main website.
It should be noted that single-chip microcontroller is given at this time when main power circuit and stand-by power supply circuit are powered simultaneously
The instruction of CTRL3 low level, maintains a normally open, it is ensured that active and standby power circuit has active and standby output when electricity to export respectively simultaneously.
It should be noted that the utility model is realized by using single-chip microcontroller, voltage detecting circuit, voltage conversion circuit etc.
The intelligent control of entire circuit, while realizing using the on-off of single-chip microcontroller control relay the purpose of power supply switching, in real time
Property it is high, reaction is fast, reliable new peak.And original contactor is replaced using relay, reduce the volume of entire circuit, occupies
Space is few, easy-to-connect, and maintenance is simple and is easily installed debugging.
It should be noted that the present embodiment can be applied in the special transformer terminals of three-phase and four-line simultaneously, such as three-phase and four-line is concentrated
Device, three-phase and four-line collector etc..
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of preposition access device for the special transformer terminals of phase three-wire three for meeting dual power supply, which is characterized in that including active/standby power supply
Input administrative unit, detection protection circuit, main control unit and power supply output management unit；
Wherein, the active/standby power input administrative unit accesses main power circuit secondary line and backup power source secondary line simultaneously
Road；Main power circuit secondary line is connect on the normally closed node of relay K4 by voltage transformer TV1；Stand-by power supply circuit is secondary
Route is connect on the coil of the normally opened node of relay K4 and relay K4 respectively by voltage transformer TV2；
The detection protection circuit includes input relay and detection circuit, for detecting main power supply tape electricity situation, master control
Unit detects master spare circuit and charges situation, and controls power supply output management unit according to testing result；
The active/standby power input administrative unit output end is connect with the input terminal of main control unit, power supply output management unit
The input terminal output end that inputs administrative unit output end and main control unit with main power source respectively connect, power supply output management unit
The input terminal output end that inputs administrative unit output end and main control unit with stand-by power source respectively simultaneously connect.
2. the preposition access device of the phase three-wire three special transformer terminals according to claim 1 for meeting dual power supply, feature exist
In the input relay includes relay K5 and relay K6；Relay K6, which connects, passes through voltage transformer TV1's in route one
On route, relay K5 is connect on the route of route two-way overvoltage mutual inductor TV2.
3. the preposition access device of the phase three-wire three special transformer terminals according to claim 1 for meeting dual power supply, feature exist
In the power supply output management unit includes output relay and control circuit, and when system worked well and main power supply has
When electric, power supply output management Unit selection main power source is inputted as rear class electrical equipment；When main power line is not charged, master control
Unit finally ensures rear class electrical equipment energy so that backup power source be selected to input as rear class electrical equipment by control optocoupler
Enough safe and stable operations.
4. the preposition access device of the phase three-wire three special transformer terminals according to claim 3 for meeting dual power supply, feature exist
In the power supply output management unit is connect through control circuit 52 with the special transformer terminals late-class circuit of phase three-wire three.
5. the preposition access device of the phase three-wire three special transformer terminals according to claim 3 for meeting dual power supply, feature exist
In the control circuit includes relay K1, relay K2 and relay K3；The relay K1, relay K2 and
The control terminal of relay K3 is connect with the main control unit；The output of the relay K1, relay K2 and relay K3
End is connect with the special transformer terminals late-class circuit of phase three-wire three.
6. the preposition access device of the phase three-wire three special transformer terminals according to claim 1 for meeting dual power supply, feature exist
In, the normally opened node of the relay K1 is connect with stand-by power supply circuit voltage output lines, the normally opened node of relay K2 with
The connection of main power circuit voltage output lines, the normally opened node of the one of relay K3 connect with main power circuit voltage output lines,
Another normally opened node is connect with stand-by power supply circuit voltage output lines.
7. the preposition access device of the phase three-wire three special transformer terminals according to claim 1 for meeting dual power supply, feature exist
In the main control unit is the STM32F103C8T6 single-chip microcontroller of ARM company.
8. the preposition access device of the phase three-wire three special transformer terminals according to claim 1 for meeting dual power supply, feature exist
In being provided with multi-level protection circuit between the active/standby power input administrative unit and power supply output management unit；The multistage
Protection circuit includes TL523-4 optocoupler, and what the interlocking mechanism and D1, D2 of Q1, Q2, Q3, Q4 composition provided prevents backward voltage
Breakdown effects, and ensure that relay K1, K2 and K3 can ensure in single-chip microcontroller exception by using XOR gate chip
The integrality of entire protection circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821985583.8U CN208955742U (en) | 2018-11-29 | 2018-11-29 | Meet the preposition access device of the special transformer terminals of phase three-wire three of dual power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821985583.8U CN208955742U (en) | 2018-11-29 | 2018-11-29 | Meet the preposition access device of the special transformer terminals of phase three-wire three of dual power supply |
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| CN208955742U true CN208955742U (en) | 2019-06-07 |
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| CN201821985583.8U Active CN208955742U (en) | 2018-11-29 | 2018-11-29 | Meet the preposition access device of the special transformer terminals of phase three-wire three of dual power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256853A (en) * | 2018-11-29 | 2019-01-22 | 国网安徽省电力有限公司滁州供电公司 | Meet the preposition access device and method of the special transformer terminals of phase three-wire three of dual power supply |
| CN111614091A (en) * | 2020-07-01 | 2020-09-01 | 国网安徽省电力有限公司滁州供电公司 | Concentrator for dual power supplies |
| CN112018874A (en) * | 2020-08-25 | 2020-12-01 | 北京科东电力控制系统有限责任公司 | Dual-power supply monitoring device and system |
-
2018
- 2018-11-29 CN CN201821985583.8U patent/CN208955742U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256853A (en) * | 2018-11-29 | 2019-01-22 | 国网安徽省电力有限公司滁州供电公司 | Meet the preposition access device and method of the special transformer terminals of phase three-wire three of dual power supply |
| CN111614091A (en) * | 2020-07-01 | 2020-09-01 | 国网安徽省电力有限公司滁州供电公司 | Concentrator for dual power supplies |
| CN112018874A (en) * | 2020-08-25 | 2020-12-01 | 北京科东电力控制系统有限责任公司 | Dual-power supply monitoring device and system |
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