CN111308145A - Uninterrupted meter changing auxiliary power supply box with error correction protection function - Google Patents
Uninterrupted meter changing auxiliary power supply box with error correction protection function Download PDFInfo
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- CN111308145A CN111308145A CN202010321769.9A CN202010321769A CN111308145A CN 111308145 A CN111308145 A CN 111308145A CN 202010321769 A CN202010321769 A CN 202010321769A CN 111308145 A CN111308145 A CN 111308145A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/25—Arrangements for indicating or signalling faults
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a non-power-outage meter change auxiliary power supply box with an error correction protection function, which comprises a detection main control module and a line breaker, wherein a user meter box is connected with the input end of a line control breaker through an incoming cable, the output end of the line control breaker is connected through an outgoing cable, each phase circuit connected with the input end of the line control breaker is provided with a current transformer, the three current transformers are connected to the current transformer interface of the detection main control module together, each phase connected with the input end of the line control breaker is respectively connected to an incoming voltage interface of the detection main control module, the line control breaker is connected to a breaker control interface of the detection main control module, and each phase connected with the output end of the line control breaker is respectively connected to an outgoing voltage interface; and all the phases in front of the outgoing switch of the user meter box are connected into an ammeter voltage interface of the detection main control module through detection cables. The uninterrupted meter changing auxiliary power supply box can ensure the continuous and safe power supply at a user and the safety of meter changing workers during meter changing.
Description
Technical Field
The invention relates to a non-power-outage meter change auxiliary power box with an error correction protection function, which is used in the field of power consumption data acquisition.
Background
With the increasing demand of users for power utilization, the meter-changing device without power cut has become a main development direction for technicians. Then current not have a power failure and trade table device, need have a power failure just can install when the installation for the first time, later follow-up trade table just can realize the operation of not having a power failure, and this type of device can only be directed against single-phase power consumption user, can't be used in the occasion of three-phase power supply.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a non-power-outage meter-changing auxiliary power supply box with an error correction protection function, which is convenient to operate and reliable in connection and can ensure continuous and safe power supply at a user and the safety of meter-changing workers during meter changing.
One technical scheme for achieving the above purpose is as follows: the uninterrupted meter changing auxiliary power supply box with the error correction protection function is used for being connected with a three-phase user meter box, the user meter box is respectively an A phase, a B phase, a C phase and an N phase, and the uninterrupted meter changing auxiliary power supply box with the error correction protection function comprises a detection main control module and a circuit breaker;
the phase A, the phase B, the phase C and the phase N in front of the incoming line switch of the user meter box are respectively connected with the input end of the line control circuit breaker through incoming lines, the phase A, the phase B, the phase C and the phase N behind the outgoing line switch of the user meter box are respectively connected with the output end of the line control circuit breaker through outgoing lines, a current transformer is respectively arranged on the phase A, the phase B and the phase C circuits connected with the input end of the line control circuit breaker, the three current transformers are jointly connected with the current transformer interface of the detection main control module, the phase A, the phase B, the phase C and the phase N connected with the input end of the line control circuit breaker are respectively connected with the phase A incoming line voltage interface, the phase B incoming line voltage interface, the phase C incoming line voltage interface and the zero line interface of the detection main control module, the line control circuit breaker is connected with the circuit breaker control module, and the phase, The phase B and the phase C are respectively connected to an A-phase outlet line voltage interface, a B-phase outlet line voltage interface and a C-phase outlet line voltage interface of the detection main control module;
a phase cable, a phase cable B cable and a phase cable C cable which are arranged in front of the outgoing switch of the user meter box are respectively provided with a detection clamp, and are connected into an A phase ammeter voltage interface, a B phase ammeter voltage interface and a C phase ammeter voltage interface of the detection main control module through the detection cables.
Furthermore, an A-phase power supply indicator lamp, a B-phase power supply indicator lamp and a C-phase power supply indicator lamp are respectively connected between the A phase and the N phase, between the B phase and the N phase and between the C phase and the N phase of the input end of the connecting wire control circuit breaker.
Furthermore, the detection main control module is connected with the input module.
Furthermore, the detection main control module is connected with the display module.
Furthermore, the detection main control module is connected with the alarm module.
The uninterrupted meter changing auxiliary power supply box with the error correction protection function provides an auxiliary power supply loop for realizing uninterrupted three-phase electric energy meter changing, warns and protects operation errors possibly occurring in the wiring and meter changing processes, and ensures that meter changing operation is completed safely and reliably.
Drawings
Fig. 1 is a schematic structural diagram of a connection between a non-power-outage meter-changing auxiliary power box with an error correction protection function and a user meter box.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:
referring to fig. 1, the connection relationship between the uninterruptible power supply box with error correction protection function and the user meter box of the present invention is as follows.
The user meter box 1 is respectively an A phase, a B phase, a C phase and an N phase.
The invention discloses a non-power-outage meter-changing auxiliary power supply box with an error correction protection function, which comprises a detection main control module 2 and a circuit breaker 3.
A phase, a phase B, a phase C and a phase N in front of an incoming line switch 11 of a user meter box 1 are respectively connected to the input end of a connecting line control circuit breaker 3 through incoming line cables 4, and the phase A, the phase B, the phase C and the phase N behind an outgoing line switch 12 of the user meter box 1 are respectively connected with the output end of the line control circuit breaker 3 through outgoing line cables 5. And a current transformer 6 is respectively arranged on the A-phase circuit, the B-phase circuit and the C-phase circuit which are connected with the input end of the line control circuit breaker, and the three current transformers 6 are jointly connected to a current transformer interface of the detection main control module 2. The phase A, the phase B, the phase C and the phase N of the input end of the connecting wire control circuit breaker 3 are respectively connected to the phase A incoming line voltage interface, the phase B incoming line voltage interface, the phase C incoming line voltage interface and the zero line interface of the detection main control module 2. The line control circuit breaker 3 is connected to a circuit breaker control interface of the detection main control module 2. The phase A, the phase B and the phase C of the output end of the connecting wire control circuit breaker 3 are respectively connected to the phase A outgoing line voltage interface, the phase B outgoing line voltage interface and the phase C outgoing line voltage interface of the detection main control module 2.
A phase cable, a phase cable B cable and a phase cable C cable which are arranged in front of the outlet switch 12 of the user meter box 1 are respectively provided with a detection clamp, and are connected to an A phase meter voltage interface, a B phase meter voltage interface and a C phase meter voltage interface of the detection main control module 2 through a detection cable 7.
An A-phase power supply indicator lamp 31, a B-phase power supply indicator lamp 32 and a C-phase power supply indicator lamp 33 are respectively connected between the A phase and the N phase, between the B phase and the N phase and between the C phase and the N phase of the input end of the connecting line control circuit breaker 3.
The detection main control module 3 is connected with the input module. The input module can be 16 keys and 2 keys with indicator lights.
The detection main control module 3 is connected with the display module. The display module may be a 320x240 dot matrix color LCD display module.
The detection main control module 3 is connected with the alarm module. The alarm module can give out sound and alarm for a buzzer.
The detection master control module 3 can adopt a processor of an NXP 16/32 bit ARM7TDMI-S inner core.
The operation flow of replacing the meter by adopting the uninterrupted meter replacing auxiliary power supply box with the error correction protection function is as follows:
1. preparation work:
1) checking the power supply current of a user to ensure that each phase is less than or equal to 20A;
2) placing a power supply box at a proper position of a user meter box accessory;
2. connecting a power supply box;
1) the incoming line cables 4 of the A/B/C phases of the user meter box 1 are sequentially connected, so that the A-phase power supply indicator lamp 31, the B-phase power supply indicator lamp 32 and the C-phase power supply indicator lamp 33 are turned on;
2) switch for switching auxiliary power supply box without power failure
3. And (3) starting operation:
1) starting detection by inputting an instruction, displaying incoming line voltage Values (VI) of all phases on a screen, and expressing the phases by different colors (A-yellow, B-green and C-red);
2) the A/B/C phase outgoing line cables 5 of the user meter box 1 are sequentially connected, and outgoing line Voltage (VO) of each phase is displayed on a screen;
3) the A/B/C phase meter detection clamp and the detection cable 6 of the user meter box 1 are sequentially connected, and the outgoing line Voltage (VM) of each phase meter is displayed on a screen;
4) if the outgoing line voltage VO corresponds to the incoming line voltage VI, a green prompt (please press an access button) appears on the screen;
if the outgoing line voltage VO is not in one-to-one correspondence with the incoming line voltage VI, a screen displays a red warning (VO A/B/C phase error) and sends out a sound alarm. At this point pressing the access button is not effective.
5) After the [ access button ] is pressed, displaying the [ access request press [ confirm ] key ] on a screen;
at this time, the operator is required to check the current data, and press [ confirm ] after no abnormity exists;
if the current of the power supply box is detected to be larger than the limit value, a red prompt (IA/B/C current overrun) is given out, a sound alarm is given out, and the contactor is disconnected;
power-off protection (enabled in 5-10 steps):
at this time, if pressing [ break button ], displaying red prompt [ confirm to cut off the power supply and press [7] ], if confirm to need to cut off the power supply box power supply, press [ break button ] then press [7], if do not cut off the power supply then press [ ← ] key reply the former operation;
6) after pressing the [ OK ] key, displaying the [ please disconnect the incoming line switch and press [8] ] on the screen;
at the moment, please disconnect the incoming line switch of the user meter box;
if the current value of each phase does not exceed the limit, a key [8] can be pressed;
current overrun protection (enabled in 6-10 steps):
if the current of the power supply box is detected to be larger than the limit value, a red prompt (current overrun request load reduction) is displayed, an audio alarm is given, if the current is still overrun after 5 seconds, a count-down number is displayed, the audio alarm is urgent, and power supply is cut off after 5 seconds.
7) After the [8] key is pressed, displaying the [ please disconnect the outgoing line switch and press [9] ] on the screen;
at this point please disconnect the outlet switch of the user meter box and then press the [9] key.
8) After pressing the [9] key, displaying the [ please change the table and finish pressing [ affirm ] ]ona screen;
at this time, the table-changing operation is started, and the [ confirm ] key is pressed after the table-changing is completed.
9) After pressing the [ OK ] key, displaying the [ please put through the incoming line switch and press [8] ] on the screen;
at the moment, please close the incoming line switch of the user meter box, and then press the [8] key;
if the outgoing line voltage VM and the incoming line voltage VI are not in one-to-one correspondence at the moment, a screen displays a red warning (VM A/B/C phase error) and sends out a sound alarm. The wiring of the user meter box meter should be checked at this time. Please press the [8] key after eliminating the problem and no alarm.
10) After the [8] key is pressed, displaying the [ please put through the outgoing line switch and press the [9] ] on the screen;
at this time, please close the outlet switch of the user meter box, and then press the [9] key.
11) After pressing the [9] key, the screen displays [ switch the table and finish pressing [ break ] ]
At this time, pressing the (off button) cuts off the power supply box and the meter changing operation is finished.
4. And (5) finishing the operation:
1) turning off a power switch;
2) and sequentially taking down each wire clamp and the probe. And filling up the damaged points on the user cable with insulating materials.
3) And (6) collecting each cable, and detecting the wires. And finishing the table replacing operation.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a do not have a power failure and trade table auxiliary power supply case with error correction protect function for be connected with three-phase user table case, user table case is A looks, B looks, C looks and N looks respectively, and this do not have a power failure and trade table auxiliary power supply case with error correction protect function is including detecting host system and circuit breaker, its characterized in that:
the phase A, the phase B, the phase C and the phase N in front of the incoming line switch of the user meter box are respectively connected with the input end of the line control circuit breaker through incoming lines, the phase A, the phase B, the phase C and the phase N behind the outgoing line switch of the user meter box are respectively connected with the output end of the line control circuit breaker through outgoing lines, a current transformer is respectively arranged on the phase A, the phase B and the phase C circuits connected with the input end of the line control circuit breaker, the three current transformers are jointly connected with the current transformer interface of the detection main control module, the phase A, the phase B, the phase C and the phase N connected with the input end of the line control circuit breaker are respectively connected with the phase A incoming line voltage interface, the phase B incoming line voltage interface, the phase C incoming line voltage interface and the zero line interface of the detection main control module, the line control circuit breaker is connected with the circuit breaker control module, and the phase, The phase B and the phase C are respectively connected to an A-phase outlet line voltage interface, a B-phase outlet line voltage interface and a C-phase outlet line voltage interface of the detection main control module;
a phase cable, a phase cable B cable and a phase cable C cable which are arranged in front of the outgoing switch of the user meter box are respectively provided with a detection clamp, and are connected into an A phase ammeter voltage interface, a B phase ammeter voltage interface and a C phase ammeter voltage interface of the detection main control module through the detection cables.
2. The auxiliary power supply box with the error correction protection function for the uninterruptible power supply for the ammeter according to claim 1, wherein an a-phase power supply indicator lamp, a B-phase power supply indicator lamp and a C-phase power supply indicator lamp are respectively connected between the a phase and the N phase, between the B phase and the N phase, and between the C phase and the N phase of the input end of the connecting-by-wire circuit breaker.
3. The uninterruptible power supply replacement auxiliary power supply box with the error correction protection function as claimed in claim 1, wherein the detection main control module is connected with the input module.
4. The uninterruptible power supply replacement auxiliary power supply box with the error correction protection function as claimed in claim 1, wherein the detection main control module is connected with the display module.
5. The uninterruptible power supply replacement auxiliary power supply box with the error correction protection function is characterized in that the detection main control module is connected with the alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321769.9A CN111308145A (en) | 2020-04-22 | 2020-04-22 | Uninterrupted meter changing auxiliary power supply box with error correction protection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321769.9A CN111308145A (en) | 2020-04-22 | 2020-04-22 | Uninterrupted meter changing auxiliary power supply box with error correction protection function |
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| CN111308145A true CN111308145A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010321769.9A Pending CN111308145A (en) | 2020-04-22 | 2020-04-22 | Uninterrupted meter changing auxiliary power supply box with error correction protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798835A (en) * | 2020-12-28 | 2021-05-14 | 广东电网有限责任公司中山供电局 | Uninterrupted meter replacing device |
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2020
- 2020-04-22 CN CN202010321769.9A patent/CN111308145A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798835A (en) * | 2020-12-28 | 2021-05-14 | 广东电网有限责任公司中山供电局 | Uninterrupted meter replacing device |
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