CN207114670U - A kind of distribution line energy monitor sensor - Google Patents
A kind of distribution line energy monitor sensor Download PDFInfo
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- CN207114670U CN207114670U CN201721137386.6U CN201721137386U CN207114670U CN 207114670 U CN207114670 U CN 207114670U CN 201721137386 U CN201721137386 U CN 201721137386U CN 207114670 U CN207114670 U CN 207114670U
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- distribution line
- energy monitor
- monitor sensor
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Abstract
A kind of distribution line energy monitor sensor, it includes voltage acquisition unit, current acquisition unit, temperature collecting cell, signal processing unit, AD conversion unit, main control unit, PMU, fault display unit, RF receiving and transmission module and collects unit；Suitable for different operation of power networks patterns；Line current measurement accuracy is high；Online stable operation；High speed recording captures low current grounding moment transient-wave signal；Precision is high；Electromagnetism interference is strong, and rate of false alarm is not more than 1%.
Description
Technical field
Electric power automation of distributive net technical field is the utility model is related to, especially a kind of distribution line energy monitor sensing
Device.
Background technology
Further investigation based on intelligent distribution network, the distribution line energy monitor sensor of the utility model development is existing
On the basis of faulty Cleaning Principle, the Modern New Technology such as integrated use radio communication, information network and new material and develop
The a set of intelligent solution come；The system can fast and accurately on-line checking earth fault, short trouble, line load, humorous
Situations such as ripple, and the characteristic information collected is sent to system main website.System software carries out data analysis, alarm is shown,
Alarm message forwarding, fault statistics retrieval and inquiry etc., guiding staff accurately finds rapidly trouble point, to improve work effect
Rate, mitigation intensity of workers provide a kind of strong means, can effectively improve distribution line failure detection oneself
Dynamicization and modernization level.
The conventional failure instruction positioning product that most domestic producer uses at present selects with the utility model product in ground connection
There is a big difference in terms of line accuracy, existing product have Monitoring Data is incorrect, malfunction monitoring not in time, even failure report
The problems such as alert inaccurate.
Utility model content
The purpose of this utility model is to provide a kind of distribution line energy monitor sensor, and it can overcome prior art
Deficiency, be a kind of simple in construction, and power supply reliability can be effectively improved and shorten the distribution line energy monitor of power off time
Sensor.
The technical solution of the utility model：A kind of distribution line energy monitor sensor, it is characterised in that it includes voltage
Collecting unit, current acquisition unit, temperature collecting cell, signal processing unit, AD conversion unit, main control unit, power management
Unit, fault display unit, RF receiving and transmission module and collect unit；Wherein, the voltage acquisition unit collection line voltage distribution letter
Number, the input connection of its output end and signal processing unit；The current signal of the current acquisition unit collection circuit, its is defeated
Go out end to be connected with the input of signal processing unit；The temperature collecting cell gathers line temperature, its output end with signal
Manage the input connection of unit；The input of the AD conversion unit collects the output data of signal processing unit, and is entered
Row conversion, is output to main control unit；The input of the output end connecting fault display unit of the main control unit, and main control unit
Also respectively with PMU and RF receiving and transmission module in being bi-directionally connected；The RF receiving and transmission module and collect between unit and be in
It is bi-directionally connected；In being bi-directionally connected between the PMU and main control unit, as main control unit is powered, can also be by leading
Control the discharge and recharge electric energy management of power supply power supply.
The current acquisition unit uses induction coil circuit structure of the PCB Rogowski coils as novel indicator.
The PMU is by CT（Current Tranfer --- current transformer）Power taking administrative unit, lithium
Battery management unit and super capacitance management unit are formed；Main power source is power taking administrative unit, and back-up source is by lithium battery management
Unit and super capacitance management unit；Power management function can according to circumstances switch different power supply modes, while can manage
Super capacitor charges.
CT power takings administrative unit, lithium battery administrative unit and the super capacitance management unit are integrated using ADP5091
Change power management chip, realize power management function.
The fault display unit is the fault display unit being made up of ultra-bright LED indicator lamp.
The RF receiving and transmission module is the module of wireless receiving and dispatching mode, using 433MHz wireless module.
Operation principle of the present utility model：
（1）Voltage acquisition：
The unit forms electric capacity effect using wire and wiring board, and line voltage distribution can produce electric field in assist side, so as to
Produce induced electromotive force；The size of induced electromotive force is by the distance dependent between wire and wiring board.
This induced electromotive force passes through signal transacting, obtains the voltage data of actual track.
（2）Current acquisition
The unit collects the current signal at scene using faraday electromagnetic induction principle, different current values production on high-voltage line
Raw different magnetic flux, different magnetic flux produce different induced electromotive forces in coil, induced electromotive force by suitably amplifying,
Analog-to-digital conversion and data processing, obtain real-time current value.The induced electromotive force and coil turn, magnetic flux change and magnetic
Field is directly proportional with the sine value of the angle of vector plane, and the change of electric current has most directly been reacted in the change of wherein magnetic flux.I
By using specific coil, specific angle and non-contacting mode（It is different from the transformer of set line）Measure magnetic flux
Change, i.e. circuit current conditions.
According to principles above, using induction coil of the PCB Rogowski coils as novel indicator.The letter of Rogowski coil structure
Single, no hysteresis effect, phase error is almost nil, and output signal is the differential of Current versus time, passes through an electricity to output
The circuit that pressure signal is integrated, it is possible to truly reduce input current.PCB Rogowski coils can be accomplished highly consistent simultaneously
Property, to reduce the error between coil.
（3）Temperature acquisition
Cable temperature detection, the mounting temperature sensor on card wire structure, implement collection cable temperature.Temperature sensor needs
Effectively contacted with cable, to obtain real cable temperature.
（4）Signal processing unit
Due to the electromagnetic environment very severe at scene, therefore, effective filtering measures are very important.For filtering side
Face, because the signal of our measurements is in 50HZ or so, therefore the design of low pass filter is employed, wherein break frequency is tentatively controlled
Make in 300HZ, so can effectively reduce the interference of high-frequency interferencing signal.
The signal of collection after filtering after, into amplifying unit, amplification is realized using two-way：It is that current signal is put all the way
Greatly, after appropriate amplification, signal is transmitted to microcontroller and handled；Multiplication factor is 5.5 times, should ensure signal foot
It is enough strong, anti-interference and precision, ensure that signal acquisition is not spilt over and the linearity of current signal again.
Amplify all the way for voltage signal in addition, multiplication factor is 1 or 2 times, and carrying out microcontroller by the way of sorting enters
Row processing, it so can effectively improve the authenticity and reliability of signal.Signal and signal processing are gathered simultaneously
Power consumption is bigger, therefore, necessary to detect the detection for employing timesharing, for reducing power consumption.
（5）AD conversion unit
Signal after amplifying after filtering enters microcontroller and carries out analog-to-digital conversion and data processing work.Due to the product
Principle and structure use non-contacting acquisition mode, be not the transformer mode of traditional set line, so require microcontroller
Device has calibration function；Simultaneously in order to ensure the good linearity and precision, microcontroller will use in terms of digital-to-analogue conversion is carried out
12 AD gather (single-chip microcomputer is internally integrated AD).In terms of signal transacting, using suitable algorithm, prevent from reporting by mistake, reduce error.
（6）PMU
Current collecting device is powered for multiple power sources, and main power source is CT power takings, and back-up source is by super capacitor and lithium electricity
Pond forms.Power management function can according to circumstances switch different power supply modes, while manage super capacitor charging.Using
The integrated power management chips of ADP5091, realize power management function.
In addition, by application new material and innovation power technology, can the continuous power taking in the range of 0 ~ 600A of line current,
Line current 5A can meet the minimum requirements of self-powered operation.
（7）RF receiving and transmission module
Wireless mode uses 433MHz wireless module, there is special standard requirement to power consumption in this frequency range；For
Reduction power consumption, it is impossible to open wireless telecommunications for a long time, it is necessary to open when needs, close later.The content of communication will meet
ICP/IP protocol standard in 101 stipulations, the data content of transmission include：Permanent short failure, instantaneous short-circuit failure, battery electric quantity
The remote signalling point information such as low, communication abnormality, decompression, electric field mutation, and fault waveform information during fault alarm.
In addition, RF receiving and transmission module realizes three-phase synchronous timing function, sync identification error is less than 100 μ s.
（8）Fault display unit
Once the failures such as open circuit, phase fault and ground short circuit occurs in circuit, indicator quotes failure, adopts simultaneously
Light instruction is carried out with super bright LED, the staff reminded to scene enters row line processing.The indicator lamp needs very high bright
Degree, while in order to reduce power consumption, the lighting time of LED light is controlled by controlling dutycycle.
It is of the present utility model to be advantageous in that：1st, product function optimizes, suitable for various regions difference operation of power networks mould at home
Formula；2nd, using advanced electronic type current sensor, line current measurement accuracy is improved；3rd, power management function is optimized, it is real
Existing a variety of power supply modes, meanwhile, using low current（5A）CT asks for power technology, ensure that real-time online stable operation；4th, can be real
Existing line current is to earth electric field high speed recording（4kHz）, low current grounding moment transient-wave signal can be captured；5、100
μ s levels high accuracy, wireless time synchronously realize three-phase current and the over the ground synchronous acquisition of electric field waveform；6th, electromagnetism interference is strong, by mistake
Report rate is not more than 1%.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of distribution line energy monitor sensor involved by the utility model.
Embodiment
Embodiment：A kind of distribution line energy monitor sensor (see Fig. 1), it is characterised in that it includes voltage acquisition list
Member, current acquisition unit, temperature collecting cell, signal processing unit, AD conversion unit, main control unit, PMU, event
Hinder display unit, RF receiving and transmission module and collect unit；Wherein, the voltage acquisition unit collection line voltage signal, its is defeated
Go out end to be connected with the input of signal processing unit；The current signal of current acquisition unit collection circuit, its output end with
The input connection of signal processing unit；The temperature collecting cell gathers line temperature, its output end and signal processing unit
Input connection；The input of the AD conversion unit collects the output data of signal processing unit, and is changed,
It is output to main control unit；The input of the output end connecting fault display unit of the main control unit, and main control unit is also distinguished
It is in be bi-directionally connected with PMU and RF receiving and transmission module；The RF receiving and transmission module and to collect between unit be in two-way company
Connect；In being bi-directionally connected between the PMU and main control unit, powered for main control unit.
The current acquisition unit uses induction coil circuit structure of the PCB Rogowski coils as novel indicator.
The PMU（See Fig. 1）It is by CT power takings administrative unit, lithium battery administrative unit and super capacitance
Unit is managed to form；Main power source is power taking administrative unit, and back-up source is by lithium battery administrative unit and super capacitance management unit；Electricity
Power management function can according to circumstances switch different power supply modes, while can manage super capacitor charging.
CT power takings administrative unit, lithium battery administrative unit and the super capacitance management unit are integrated using ADP5091
Change power management chip, realize power management function.
The fault display unit is the fault display unit being made up of ultra-bright LED indicator lamp.
The RF receiving and transmission module is the module of wireless receiving and dispatching mode, using 433MHz wireless module.
Claims (6)
1. a kind of distribution line energy monitor sensor, it is characterised in that it includes voltage acquisition unit, current acquisition unit, temperature
Collecting unit, signal processing unit, AD conversion unit, main control unit, PMU, fault display unit, radio frequency is spent to receive
Send out module and collect unit；Wherein, the voltage acquisition unit collection line voltage signal, its output end and signal processing unit
Input connection；The current signal of the current acquisition unit collection circuit, the input of its output end and signal processing unit
End connection；The temperature collecting cell gathers line temperature, the input connection of its output end and signal processing unit；The AD
The input of converting unit collects the output data of signal processing unit, and is changed, and is output to main control unit；It is described
The input of the output end connecting fault display unit of main control unit, and main control unit also respectively with PMU and radio frequency
Transceiver module is in be bi-directionally connected；The RF receiving and transmission module and collect between unit in being bi-directionally connected；The PMU
It is in be bi-directionally connected between main control unit.
A kind of 2. distribution line energy monitor sensor according to claim 1, it is characterised in that the current acquisition unit
Using induction coil circuit structure of the PCB Rogowski coils as novel indicator.
A kind of 3. distribution line energy monitor sensor according to claim 1, it is characterised in that the PMU
It is to be made up of CT power takings administrative unit, lithium battery administrative unit and super capacitance management unit；The CT power takings administrative unit is
Main power source, lithium battery administrative unit and super capacitance management unit are back-up source.
4. a kind of distribution line energy monitor sensor according to claim 3, it is characterised in that the CT power takings management is single
Member, lithium battery administrative unit and super capacitance management unit use the integrated power management chips of ADP5091.
A kind of 5. distribution line energy monitor sensor according to claim 1, it is characterised in that the fault display unit
It is the fault display unit being made up of ultra-bright LED indicator lamp.
A kind of 6. distribution line energy monitor sensor according to claim 1, it is characterised in that the RF receiving and transmission module
It is the module of wireless receiving and dispatching mode, using 433MHz wireless module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721137386.6U CN207114670U (en) | 2017-09-06 | 2017-09-06 | A kind of distribution line energy monitor sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721137386.6U CN207114670U (en) | 2017-09-06 | 2017-09-06 | A kind of distribution line energy monitor sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207114670U true CN207114670U (en) | 2018-03-16 |
Family
ID=61586088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721137386.6U Expired - Fee Related CN207114670U (en) | 2017-09-06 | 2017-09-06 | A kind of distribution line energy monitor sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207114670U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164076A (en) * | 2019-04-22 | 2019-08-23 | 浙江省现代建筑设计研究院有限公司 | A kind of general practice builds high temperature from early warning power supply-distribution system |
| CN111141972A (en) * | 2019-12-16 | 2020-05-12 | 西安交通大学 | Capacitor running state online monitoring method based on PCB Rogowski coil |
| CN112152326A (en) * | 2020-09-23 | 2020-12-29 | 青岛鼎信通讯股份有限公司 | 10kV overhead line high pressure side low-power consumption passive current monitoring facilities |
| CN113030639A (en) * | 2021-03-04 | 2021-06-25 | 恩耐斯(福建)科技有限公司 | Cable fault sensing system |
| CN117894647A (en) * | 2024-02-01 | 2024-04-16 | 上海电瓷厂有限公司 | Intelligent fuse |
-
2017
- 2017-09-06 CN CN201721137386.6U patent/CN207114670U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164076A (en) * | 2019-04-22 | 2019-08-23 | 浙江省现代建筑设计研究院有限公司 | A kind of general practice builds high temperature from early warning power supply-distribution system |
| CN111141972A (en) * | 2019-12-16 | 2020-05-12 | 西安交通大学 | Capacitor running state online monitoring method based on PCB Rogowski coil |
| CN111141972B (en) * | 2019-12-16 | 2021-08-13 | 西安交通大学 | Capacitor running state online monitoring method based on PCB Rogowski coil |
| CN112152326A (en) * | 2020-09-23 | 2020-12-29 | 青岛鼎信通讯股份有限公司 | 10kV overhead line high pressure side low-power consumption passive current monitoring facilities |
| CN113030639A (en) * | 2021-03-04 | 2021-06-25 | 恩耐斯(福建)科技有限公司 | Cable fault sensing system |
| CN117894647A (en) * | 2024-02-01 | 2024-04-16 | 上海电瓷厂有限公司 | Intelligent fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20190906 |