CN112269055A - Intelligent junction box for electric energy metering - Google Patents
Intelligent junction box for electric energy metering Download PDFInfo
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- CN112269055A CN112269055A CN202011338774.7A CN202011338774A CN112269055A CN 112269055 A CN112269055 A CN 112269055A CN 202011338774 A CN202011338774 A CN 202011338774A CN 112269055 A CN112269055 A CN 112269055A
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- 238000005070 sampling Methods 0.000 claims abstract description 34
- 238000004891 communication Methods 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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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
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to the technical field of electric energy metering junction boxes, in particular to an intelligent junction box for electric energy metering; the junction box comprises an electric energy metering junction box body, and an MCU main control unit, a switch module, a 485 communication module, a carrier communication module, an acousto-optic alarm module, a current sampling module and a voltage sampling module are further arranged on the junction box body; the voltage sampling module and the current sampling module collect three-phase voltage and current of a load side, the three-phase voltage and the three-phase current are transmitted to the MCU main control unit for calculation and analysis, when the analysis result is a phase error, an instruction is sent to enable the acousto-optic alarm module to carry out acousto-optic alarm, meanwhile, the instruction is sent to control the change-over switch module to carry out phase switching, and the serial number and error information of the intelligent junction box are uploaded to the distribution network master station in a 485 and carrier communication mode; the invention is convenient to use and install, realizes intelligent diagnosis, automatically alarms, reminds in real time and automatically adjusts when the phase of the load side is misconnected, autonomously switches misconnection and ensures that the line connection of the load side is correct.
Description
Technical Field
The invention relates to the technical field of electric energy metering junction boxes, in particular to an intelligent junction box for electric energy metering.
Background
The junction box is used as an important component in the electric power metering device, and has the functions of connecting secondary wires led out by the mutual inductor to the terminals of the electric energy meter after being connected in series and in parallel through the terminals at the end of the junction box, and realizing state switching by changing the connection position of the junction box when the field verification, the electricity utilization inspection and the replacement of the electric energy meter of the metering device are carried out. However, when the junction box is installed, due to the fact that field workers have different levels, field lines are complex, the line phase is difficult to judge, and the like, the situations generally exist, the phase of current and voltage on the load side is prone to being misconnected, the metering data of the electric energy meter is abnormal, and the situation of electricity consumption on the load side is difficult to accurately record.
The traditional junction box lacks a load side wiring misjudgment design and an automatic phase adjustment design.
Disclosure of Invention
The invention aims to solve the problem that the existing junction box lacks the functions of wrong judgment design of connection at the load side and automatic phase adjustment, and provides an intelligent junction box for electric energy metering.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an intelligent junction box for electric energy metering comprises an electric energy metering junction box body, wherein an MCU main control unit, a switch module, a 485 communication module, a carrier communication module, an acousto-optic alarm module, a current sampling module and a voltage sampling module are further arranged on the junction box body;
the 485 communication module and the carrier communication module are both connected with the MCU main control unit 1 and carry out data transmission and exchange with the MCU main control unit; meanwhile, the 485 communication module and the carrier communication module are coupled with the distribution network master station and used for transmitting the processing result of the MCU master control unit to the distribution network master station;
the voltage sampling module and the current sampling module are both coupled with a load, and are connected with the MCU main control unit, and the voltage sampling module is used for collecting three-phase voltage values of the load side and transmitting the three-phase voltage and data of the load side to the MCU main control unit for calculation and analysis; the current sampling module is connected with a resistor to acquire resistor voltage to calculate a three-phase current value; transmitting the load current data to the MCU main control unit for calculation and analysis;
the MCU main control unit is used for calculating, processing and analyzing;
the change-over switch module is connected with the MCU main control unit, and the MCU main control unit controls the change-over switch to be connected to a correct position when calculating the voltage/current phase error of the load side and simultaneously sends out an alarm signal;
and the sound and light alarm module is connected with the MCU main control unit and carries out sound and light alarm after receiving an alarm signal of the MCU main control unit.
Voltage sampling module and current sampling module gather load side three-phase voltage and electric current, transmit to MCU main control unit and carry out calculation analysis, when the analysis result is the phase error, send instruction lets acousto-optic warning module carry out acousto-optic warning, send instruction control change over switch module simultaneously and carry out the phase switch to through 485 and carrier communication mode with intelligent terminal box serial number and error message upload to joining in marriage net main website, can carry out remote upgrade to intelligent terminal box control program through 485 communication module and carrier communication module.
Compared with the prior art, the invention has the following beneficial effects:
the MCU main control unit calculates and judges whether the three-phase voltage and current on the load side are in phase misconnection or not, carries out on-site alarm through the audible and visual alarm device, controls circuit switching through the change-over switch module to realize automatic phase switching of the three-phase voltage and current, uploads phase error information and switching information to a distribution network master station through a 485 or carrier communication module to record, and supports remote control of intelligent junction box program upgrading through the master station.
The invention is convenient to use and install, realizes intelligent diagnosis, automatically alarms, reminds in real time and automatically adjusts when the phase of the load side is misconnected, autonomously switches misconnection and ensures that the line connection of the load side is correct.
Drawings
Fig. 1 is a schematic diagram of the connection of the intelligent terminal box module according to the present invention.
Fig. 2 is a schematic diagram of a conventional junction box connected to an electric energy meter.
The figures are labeled as follows:
the system comprises a MCU (microprogrammed control Unit) main control unit, a 2-change-over switch module, a 3-485 communication module, a 4-carrier communication module, a 5-acousto-optic alarm module, a 6-current sampling module, a 7-voltage sampling module, an 8-distribution network master station and a 9-load.
Detailed Description
The present invention is further illustrated by the following specific examples.
Examples
As shown in fig. 1, an intelligent junction box for electric energy metering comprises an electric energy metering junction box body, wherein an MCU main control unit 1, a change-over switch module 2, a 485 communication module 3, a carrier communication module 4, an audible and visual alarm module 5, a current sampling module 6 and a voltage sampling module 7 are further arranged on the junction box body;
the 485 communication module 3 and the carrier communication module 4 are both connected with the MCU main control unit 1 and carry out data transmission and exchange with the MCU main control unit; meanwhile, the 485 communication module 3 and the carrier communication module 4 are coupled to the distribution network master station 8 and used for transmitting the processing result of the MCU master control unit 1 to the distribution network master station 8;
the voltage sampling module 7 and the current sampling module 6 are both coupled to a load 9, the voltage sampling module 7 and the current sampling module 6 are both connected with the MCU main control unit 1, and the voltage sampling module 7 is used for collecting three-phase voltage values of the load 9 side and transmitting the three-phase voltage and data of the load side to the MCU main control unit 1 for calculation and analysis; the current sampling module 6 is connected with a resistor to collect the resistor voltage to calculate a three-phase current value; transmitting the load current data to the MCU main control unit 1 for calculation and analysis;
the MCU main control unit 1 is used for calculating, processing and analyzing;
the change-over switch module 2 is connected with the MCU main control unit 1, and the MCU main control unit 1 controls the change-over switch to be connected to a correct position when calculating the voltage/current phase error of the load side and simultaneously sends out an alarm signal;
and the sound and light alarm module 5 is connected with the MCU main control unit 1 and performs sound and light alarm after receiving an alarm signal of the MCU main control unit 1.
Further, the MCU main control unit 1 adopts a 32-bit micro control unit for calculation, processing and analysis
The working process is as follows: voltage sampling module 7 and current sampling module 6 gather load 9 side three-phase voltage and electric current, transmit to MCU main control unit 1 and carry out calculation analysis, when the analysis result is the phase error, send instruction lets acousto-optic warning module 5 carry out acousto-optic warning, send instruction control change over switch module 2 simultaneously and carry out the phase switch, and through 485 and carrier communication mode with intelligent terminal box serial number and error message upload to joining in marriage net main website 8, can carry out remote upgrade to intelligent terminal box control program through 485 communication module 3 and carrier communication module 4.
The intelligent junction box is provided with an MCU (microprogrammed control unit) main control unit 1 for calculating the phase of three-phase current; the switching module 2 is provided for switching the three-phase current phases; the device is provided with a 485 communication module 3, and intelligent judgment results and phase switching operation data are uploaded to a distribution network master station 8; the system is provided with a carrier communication module 4 for uploading intelligent judgment results and switching phase operation data to a master station; downloading and upgrading a remote program; the sound and light alarm module 5 is provided for sound and light alarm; the current sampling module 6 is used for collecting current signals and converting the current signals into information which can be processed by the MCU; and the voltage sampling module 7 is used for collecting voltage signals and converting the voltage signals into information which can be processed by the MCU.
Claims (2)
1. An intelligent junction box for electric energy metering is characterized by comprising an electric energy metering junction box body, wherein an MCU (microprogrammed control Unit) main control unit (1), a change-over switch module (2), a 485 communication module (3), a carrier communication module (4), an audible and visual alarm module (5), a current sampling module (6) and a voltage sampling module (7) are further arranged on the junction box body;
the 485 communication module (3) and the carrier communication module (4) are both connected with the MCU main control unit (1) and carry out data transmission and exchange with the MCU main control unit; meanwhile, the 485 communication module (3) and the carrier communication module (4) are coupled with the distribution network master station (8) and used for transmitting the processing result of the MCU master control unit (1) to the distribution network master station (8);
the voltage sampling module (7) and the current sampling module (6) are both coupled with a load (9), meanwhile, the voltage sampling module (7) and the current sampling module (6) are both connected with the MCU main control unit (1), the voltage sampling module (7) collects three-phase voltage values of the load (9) side, and transmits the three-phase voltage values and data of the load side to the MCU main control unit (1) for calculation and analysis; the current sampling module (6) is connected with a resistor to collect the resistor voltage to calculate a three-phase current value; the load current data are transmitted to the MCU main control unit (1) for calculation and analysis;
the MCU main control unit (1) is used for calculating, processing and analyzing;
the change-over switch module (2) is connected with the MCU main control unit (1), and the MCU main control unit (1) controls the change-over switch to be connected to a correct position when calculating the voltage/current phase error of the load side and simultaneously sends out an alarm signal;
and the sound and light alarm module (5) is connected with the MCU main control unit (1) and is used for carrying out sound and light alarm after receiving an alarm signal of the MCU main control unit (1).
2. The intelligent junction box for electric energy metering according to claim 1, characterized in that the MCU master control unit (1) employs a 32-bit micro control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338774.7A CN112269055B (en) | 2020-11-25 | 2020-11-25 | Intelligent junction box for electric energy metering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338774.7A CN112269055B (en) | 2020-11-25 | 2020-11-25 | Intelligent junction box for electric energy metering |
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| Publication Number | Publication Date |
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| CN112269055A true CN112269055A (en) | 2021-01-26 |
| CN112269055B CN112269055B (en) | 2024-03-19 |
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| CN202011338774.7A Active CN112269055B (en) | 2020-11-25 | 2020-11-25 | Intelligent junction box for electric energy metering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114157024A (en) * | 2021-11-19 | 2022-03-08 | 国网山东省电力公司莒县供电公司 | 10 kilovolt distribution automation interconnection switch auxiliary metering device |
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| CN208923837U (en) * | 2018-09-17 | 2019-05-31 | 浙江亿德科技有限公司 | It is a kind of for administering the controlling terminal of distribution three-phase load unbalance |
| WO2020083396A1 (en) * | 2018-10-25 | 2020-04-30 | 山东电工电气集团新能科技有限公司 | Commutation type automatic adjusting device for three-phase current imbalance |
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2020
- 2020-11-25 CN CN202011338774.7A patent/CN112269055B/en active Active
Patent Citations (12)
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| CN201465382U (en) * | 2009-05-15 | 2010-05-12 | 郑州万特电气有限公司 | High-voltage electrical energy metering training device |
| CN102692535A (en) * | 2011-03-25 | 2012-09-26 | 深圳市锐能微科技有限公司 | Electric energy metering chip and three-phase four-wire electric energy meter |
| CN102680780A (en) * | 2012-06-01 | 2012-09-19 | 南通能达电力科技有限公司 | Low-voltage electric energy metering device utilizing optical fiber to transmit signal |
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| CN107918038A (en) * | 2017-05-12 | 2018-04-17 | 国网浙江省电力公司湖州供电公司 | Switching regulator phase sequence switches combined connection box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114157024A (en) * | 2021-11-19 | 2022-03-08 | 国网山东省电力公司莒县供电公司 | 10 kilovolt distribution automation interconnection switch auxiliary metering device |
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| Publication number | Publication date |
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| CN112269055B (en) | 2024-03-19 |
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