CN108110744A - A kind of parallel connection Wiring type electric energy meter connection lightning protection device - Google Patents
A kind of parallel connection Wiring type electric energy meter connection lightning protection device Download PDFInfo
- Publication number
- CN108110744A CN108110744A CN201711421411.8A CN201711421411A CN108110744A CN 108110744 A CN108110744 A CN 108110744A CN 201711421411 A CN201711421411 A CN 201711421411A CN 108110744 A CN108110744 A CN 108110744A
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- Prior art keywords
- lightning protection
- protection device
- connection
- electric energy
- triode
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- 230000004224 protection Effects 0.000 title claims abstract description 49
- 238000004891 communication Methods 0.000 claims abstract description 49
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 24
- 208000025274 Lightning injury Diseases 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of Wiring type electric energy meter connection lightning protection devices in parallel, including lightning protection device, electric energy meter with RS485 communication interfaces, RS485 communication apparatus, the A ports of electric energy meter RS485 communication interfaces and the L connection jaws of lightning protection device connect, the L connection jaws of lightning protection device and the A mouths of RS485 communication apparatus, the B ports of electric energy meter RS485 communication interfaces and the N connection jaws of lightning protection device connect, the PE connection jaws ground connection of lightning protection device, the communication interface of electric energy meter RS485 is connected with detection module, the detection module is connected with controller, and controller is connected with alarm lamp.The program effectively protects system to prevent the damage of lightning stroke and surge, and does not influence the communication distance of RS485 under normal condition, and can timely monitor communication line.
Description
Technical field
The present invention relates to a kind of Wiring type electric energy meter connection lightning protection devices in parallel for electric energy meter.
Background technology
At present, common lightning-protection module, is all series connection wire type lightning-protection module, and when wiring needs to disconnect protected circuit,
Lightning-protection module is sealed in by the front end of protection equipment.Just there is the protective resistance of certain resistance value inside series connection wire type lightning-protection module,
Transmission range, stable operation to RS485 networks, there is large effect.Lightning-protection module needs are fixed on simultaneously is set by protection
Near standby, installation wiring trouble, construction inconvenience.To the kilowatt meter reading-out system being made of RS485 communication networks, due to acquisition points compared with
More, data collection station quantity is more, and to the ammeter of no RS485 lightning protections, generated energy acquisition equipment increases lightning protection
Measure, if using series connection wire type lightning-protection module, it is necessary in ammeter box special half of epitope position installation lightning-protection module,
It disconnects original communication line and seals in lightning-protection module.It is not only time-consuming, arduously leverage work efficiency, to ammeter box and communication
The not reserved lightning-protection module installation site of terminal is difficult processing.
The content of the invention
The purpose of the present invention provides a kind of Wiring type electric energy meter in parallel and leads to aiming at the deficiency present in the prior art
Line lightning protection device is interrogated, the program effectively protects system to prevent the damage of lightning stroke and surge, and does not influence RS485 under normal condition
Communication distance, and can timely monitor communication line.
This programme is achieved by the following technical measures：A kind of parallel connection Wiring type electric energy meter connection lightning protection device,
Including lightning protection device, the electric energy meter with RS485 communication interfaces, RS485 communication apparatus, the A ports of electric energy meter RS485 communication interfaces
It is connected with the L connection jaws of lightning protection device, the L connection jaws of lightning protection device and the A mouths of RS485 communication apparatus, electric energy meter RS485 communication interfaces
B ports and the N connection jaws of lightning protection device connect, the PE connection jaws of lightning protection device ground connection, the communication interface of electric energy meter RS485 and detection
Module connects, and the detection module is connected with controller, and controller is connected with alarm lamp.It has been achieved in that lightning protection device and electric energy
The parallel connection of table mustn't disconnect communication line and can access lightning protection device, not influence the normal communication of RS485.
The controller is connected by control circuit with alarm lamp, and the control circuit includes not circuit D1, non-
The input terminal of gate circuit D1 is connected with controller, and the output terminal of not circuit D1 passes through resistance R1 and the input terminal of not circuit D2
Connection, has diode VD1 in parallel with the resistance R1, the input terminal of not circuit D2 is grounded by capacitance C1, not circuit
The output terminal of D2 is connected by resistance R2 with the base stage of triode VT1, the emitter ground connection of triode VT1, the collection of triode VT1
Electrode is connected by relay K with+VCC, and diode VD2 is in parallel with relay K, the reports of the normally opened contact K-1 of relay K and first
Warning lamp L1 connects.It whether faulty so can timely detect the communication of electric energy meter RS485, be overhauled convenient for staff.
One end ground connection of the set temperature sensor RT in the housing of lightning protection device, temperature sensor RT, temperature sensor RT
The other end be connected with the cathode of capacitance C2, resistance R3 is serially connected in anode and the voltage stabilizing of capacitance C2 after connecting with slide rheostat RB
Between 3 feet of chip IC 1, the cathode of capacitance C2 ground connection, capacitance C3 is in parallel with capacitance C2, the anode of capacitance C2 by resistance R4 and
The base stage connection of triode VT2, the base stage of triode VT2 are connected by capacitance C4 with 2 feet of voltage stabilizing chip IC1, triode VT2
Emitter be connected with 2 feet of voltage stabilizing chip IC1, the collector of triode VT2 passes through 3 feet of resistance R6 and voltage stabilizing chip IC1
Connection, the collector of triode VT2 are connected with the base stage of triode VT3,3 feet of voltage stabilizing chip IC1 and the 2 of voltage stabilizing chip IC1
Serial capacitance C6 between 1 foot of serial capacitance C5 between foot, voltage stabilizing chip IC1 and 2 feet of voltage stabilizing chip IC1, triode VT2's
Base stage is connected by resistance R5 with the emitter of triode VT3, and the collector of triode VT3 passes through resistance R7's and thyristor VK
Control pole G connections, thyristor concatenate after connecting with wireless communication module with power supply, the second alarm lamp L2 and the channel radio
Believe wired in parallel.It so can timely monitor lightning protection device whether to work overheat, during overheat, can be sent out by wireless communication module
Warning message is sent timely to exclude alert to higher level's control system convenient for staff.
The advantageous effect of this programme can be learnt according to the narration of said program, since lightning protection device is and electricity in this scenario
Energy table parallel connection, open-circuit line is not required when so installing, is easily installed, there is detection module, can timely detect electric energy meter
Communication it is whether unimpeded, if not smooth, controller is realized pair by the way that two NAND gate circuits is controlled to control relay K
The control of first alarm lamp, alarms, and 8051 detection chips may be employed in detection module；Set temperature senses in lightning protection device
Device, so can timely monitor temperature in lightning protection device, and prevention lightning protection device temperature is excessively high on fire, during work, when the temperature increases,
The resistance value rise of temperature sensor, most turns on always triode VT2, and then makes turn on thyristors, and power supply is to the second alarm
Lamp and wireless communication module power supply, the second alarm lamp start to alarm, and alert is then sent in higher level's control by wireless communication module
The heart reminds staff, mains-supplied may be employed, convenient for wiring, 4G wireless communication modules can be used in wireless communication module.By
This is as it can be seen that compared with prior art, the present invention with prominent substantive distinguishing features and significant progress, the advantageous effect of implementation
It is and obvious.
Description of the drawings
Fig. 1 is the structure diagram of the specific embodiment of the invention.
The circuit diagram of Fig. 2 circuits in order to control.
Fig. 3 is the warning circuit figure of lightning protection device.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by a specific embodiment, and its attached drawing is combined, it is right
This programme is illustrated.
By attached drawing as can be seen that a kind of Wiring type electric energy meter connection lightning protection device in parallel of this programme, including lightning protection
Device, the electric energy meter with RS485 communication interfaces, RS485 communication apparatus, the A ports of electric energy meter RS485 communication interfaces and lightning protection device
The connection of L connection jaws, the L connection jaws of lightning protection device and the A mouths of RS485 communication apparatus, the B ports of electric energy meter RS485 communication interfaces
It is connected with the N connection jaws of lightning protection device, the PE connection jaws ground connection of lightning protection device, communication interface and the detection module of electric energy meter RS485 connect
It connects, the detection module is connected with controller, and controller is connected with alarm lamp.Be achieved in that lightning protection device and electric energy meter and
Connection mustn't disconnect communication line and can access lightning protection device, not influence the normal communication of RS485.
The controller is connected by control circuit with alarm lamp, and the control circuit includes not circuit D1, non-
The input terminal of gate circuit D1 is connected with controller, and the output terminal of not circuit D1 passes through resistance R1 and the input terminal of not circuit D2
Connection, has diode VD1 in parallel with the resistance R1, the input terminal of not circuit D2 is grounded by capacitance C1, not circuit
The output terminal of D2 is connected by resistance R2 with the base stage of triode VT1, the emitter ground connection of triode VT1, the collection of triode VT1
Electrode is connected by relay K with+VCC, and diode VD2 is in parallel with relay K, the reports of the normally opened contact K-1 of relay K and first
Warning lamp L1 connects.It whether faulty so can timely detect the communication of electric energy meter RS485, be overhauled convenient for staff.
Warning circuit is set in lightning protection device, warning circuit includes being arranged on the in vivo temperature sensor RT of lightning protection device shell,
One end of temperature sensor RT is connected with the cathode of capacitance C2, and the other end of temperature sensor RT is connected with the anode of capacitance C2,
Resistance R3 is serially connected in after connecting with slide rheostat RB between the anode of capacitance C2 and 3 feet of voltage stabilizing chip IC1, and capacitance C2's is negative
Pole is grounded, and capacitance C3 is in parallel with capacitance C2, and the anode of capacitance C2 is connected by resistance R4 with the base stage of triode VT2, triode
The base stage of VT2 is connected by capacitance C4 with 2 feet of voltage stabilizing chip IC1, the emitter of triode VT2 and 2 feet of voltage stabilizing chip IC1
Connection, the collector of triode VT2 are connected by resistance R6 with 3 feet of voltage stabilizing chip IC1, the collector of triode VT2 and three
The base stage connection of pole pipe VT3, serial capacitance C5 between 3 feet of voltage stabilizing chip IC1 and 2 feet of voltage stabilizing chip IC1, voltage stabilizing chip
The base stage of serial capacitance C6 between 1 foot of IC1 and 2 feet of voltage stabilizing chip IC1, triode VT2 pass through resistance R5 and triode VT3
Emitter connection, the collector of triode VT3 be connected by resistance R7 with the control pole G of thyristor VK, thyristor and wirelessly
It is concatenated after communication module series connection with power supply, the second alarm lamp L2 is in parallel with the wireless communication module.It so can be timely
Monitoring lightning protection device whether work overheat, during overheat, wireless communication module can be passed through and send warning message to higher level's control system
System, alert is timely excluded convenient for staff.
The present invention is not limited in above-mentioned specific embodiment, and those of ordinary skill in the art are in the essential scope of the present invention
The variations, modifications, additions or substitutions inside made should also belong to the scope of protection of the present invention.
Claims (3)
1. a kind of parallel connection Wiring type electric energy meter connection lightning protection device, including lightning protection device, the electric energy with RS485 communication interfaces
Table, RS485 communication apparatus, it is characterized in that：The A ports of electric energy meter RS485 communication interfaces and the L connection jaws of lightning protection device connect, and prevent
The L connection jaws of thunder device and the A mouths of RS485 communication apparatus, the B ports of electric energy meter RS485 communication interfaces and the N connection jaws of lightning protection device
Connection, the PE connection jaws ground connection of lightning protection device, the communication interface of electric energy meter RS485 are connected with detection module, the detection module
It is connected with controller, controller is connected with alarm lamp.
2. parallel connection Wiring type electric energy meter connection lightning protection device according to claim 1, it is characterized in that：The controller
It is connected by control circuit with alarm lamp, the control circuit includes not circuit D1, the input terminal of not circuit D1 and control
Device connection processed, the output terminal of not circuit D1 are connected by resistance R1 with the input terminal of not circuit D2, there is diode VD1 and institute
The resistance R1 stated is in parallel, and the input terminal of not circuit D2 is grounded by capacitance C1, and the output terminal of not circuit D2 passes through resistance R2
Be connected with the base stage of triode VT1, the emitter of triode VT1 ground connection, the collector of triode VT1 by relay K with+
VCC connections, diode VD2 is in parallel with relay K, and the normally opened contact K-1 of relay K connects with the first alarm lamp L1.
3. parallel connection Wiring type electric energy meter connection lightning protection device according to claim 1 or 2, it is characterized in that：In lightning protection device
Housing in set temperature sensor RT, temperature sensor RT one end and capacitance C2 cathode, temperature sensor RT's is another
End is connected with the anode of capacitance C2, and resistance R3 is serially connected in the anode and voltage stabilizing chip of capacitance C2 after connecting with slide rheostat RB
Between 3 feet of IC1, the cathode ground connection of capacitance C2, capacitance C3 is in parallel with capacitance C2, and the anode of capacitance C2 passes through resistance R4 and three poles
The base stage connection of pipe VT2, the base stage of triode VT2 are connected by capacitance C4 with 2 feet of voltage stabilizing chip IC1, the hair of triode VT2
Emitter-base bandgap grading is connected with 2 feet of voltage stabilizing chip IC1, and the collector of triode VT2 is connected by resistance R6 with 3 feet of voltage stabilizing chip IC1,
The collector of triode VT2 is connected with the base stage of triode VT3, between 3 feet of voltage stabilizing chip IC1 and 2 feet of voltage stabilizing chip IC1
Serial capacitance C6 between 1 foot of serial capacitance C5, voltage stabilizing chip IC1 and 2 feet of voltage stabilizing chip IC1, the base stage of triode VT2 are led to
The emitter that resistance R5 is crossed with triode VT3 is connected, and the collector of triode VT3 passes through the control pole of resistance R7 and thyristor VK
G connections, thyristor concatenate after connecting with wireless communication module with power supply, the second alarm lamp L2 and the wireless communication module
It is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711421411.8A CN108110744A (en) | 2017-12-25 | 2017-12-25 | A kind of parallel connection Wiring type electric energy meter connection lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711421411.8A CN108110744A (en) | 2017-12-25 | 2017-12-25 | A kind of parallel connection Wiring type electric energy meter connection lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108110744A true CN108110744A (en) | 2018-06-01 |
Family
ID=62212784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711421411.8A Pending CN108110744A (en) | 2017-12-25 | 2017-12-25 | A kind of parallel connection Wiring type electric energy meter connection lightning protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108110744A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672158A (en) * | 2018-12-29 | 2019-04-23 | 国网山东省电力公司桓台县供电公司 | The miniature lightning protection device of electric energy meter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996460A (en) * | 2009-08-25 | 2011-03-30 | 山东中瑞电气有限公司 | Acoustic-optical electronic alarm device |
| CN104134988A (en) * | 2014-08-21 | 2014-11-05 | 国家电网公司 | Multifunctional lightning protection device of intelligent single-phase electric meter |
| CN204614193U (en) * | 2015-05-14 | 2015-09-02 | 国网山东阳信县供电公司 | A kind of electric energy meter reading data transmission device |
| CN105424994A (en) * | 2015-05-23 | 2016-03-23 | 李银龙 | Smart electric energy meter with lightening-proof protection circuit |
| CN205642645U (en) * | 2016-04-15 | 2016-10-12 | 广东金莱特电器股份有限公司 | High temperature is instructed and warning circuit |
| CN106099896A (en) * | 2016-08-19 | 2016-11-09 | 国家电网公司 | A kind of neutral-point grounding resistance cabinet |
| CN107132502A (en) * | 2017-05-09 | 2017-09-05 | 无锡市恒通电器有限公司 | A kind of RS485 communication test devices of electric energy meter |
-
2017
- 2017-12-25 CN CN201711421411.8A patent/CN108110744A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996460A (en) * | 2009-08-25 | 2011-03-30 | 山东中瑞电气有限公司 | Acoustic-optical electronic alarm device |
| CN104134988A (en) * | 2014-08-21 | 2014-11-05 | 国家电网公司 | Multifunctional lightning protection device of intelligent single-phase electric meter |
| CN204614193U (en) * | 2015-05-14 | 2015-09-02 | 国网山东阳信县供电公司 | A kind of electric energy meter reading data transmission device |
| CN105424994A (en) * | 2015-05-23 | 2016-03-23 | 李银龙 | Smart electric energy meter with lightening-proof protection circuit |
| CN205642645U (en) * | 2016-04-15 | 2016-10-12 | 广东金莱特电器股份有限公司 | High temperature is instructed and warning circuit |
| CN106099896A (en) * | 2016-08-19 | 2016-11-09 | 国家电网公司 | A kind of neutral-point grounding resistance cabinet |
| CN107132502A (en) * | 2017-05-09 | 2017-09-05 | 无锡市恒通电器有限公司 | A kind of RS485 communication test devices of electric energy meter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672158A (en) * | 2018-12-29 | 2019-04-23 | 国网山东省电力公司桓台县供电公司 | The miniature lightning protection device of electric energy meter |
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Application publication date: 20180601 |