CN206132853U - Aerogenerator ground net on -line monitoring early warning device - Google Patents
Aerogenerator ground net on -line monitoring early warning device Download PDFInfo
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- CN206132853U CN206132853U CN201621103279.7U CN201621103279U CN206132853U CN 206132853 U CN206132853 U CN 206132853U CN 201621103279 U CN201621103279 U CN 201621103279U CN 206132853 U CN206132853 U CN 206132853U
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Abstract
The utility model discloses an aerogenerator ground net on -line monitoring early warning device, it includes main control unit, frequency conversion constant current source, switching circuit, communication module, peripheral hardware part and soil temperature and humidity sensor, communication module, peripheral hardware part and soil temperature and humidity sensor link to each other with main control unit respectively, the frequency conversion constant current source passes through serial ports and main control unit communication, just the frequency conversion constant current source includes true RMS calculating unit, current transformer, voltage transformer, permanent flow regulator and sinusoidal wave synthesizer, the switching circuit includes four at least hilted broadsword multi -throw switch and eight at least branch road interfaces. The utility model discloses monitor ground resistance, soil resistivity, soil temperature and humidity, through setting for the warning threshold value, judge by monitoring earth mat operating condition. The utility model discloses simple structure, can remote real -time monitoring.
Description
Technical field
This utility model is related to wind-driven generator grounded screen monitoring technical field, specifically a kind of wind-driven generator grounded screen
On-line monitoring prior-warning device.
Background technology
In wind-driven generator earthed system, not only need to understand the earth resistance of blower fan in time, also need to consider soil ring
Impact of the border to grounded screen, therefore in addition to blower fan earth resistance, should also assess soil resistivity and soil temperature and humidity etc.
Impact to earth resistance.
In existing solution, mostly using soil sensor direct measurement, measurement means are single, and to measurement knot
The transmission of fruit data and process simple, inefficiency and effect on driving birds is not good, whole test process can not carry out intelligent management.Existing
In earthing test system, tested in terms of single mostly, such as tested merely earth resistance or simple testing soil resistance
Rate, is tested comprehensively without the factor to affecting ground connection.
Publication No.：The utility model of CN204256047U discloses a kind of NEW TYPE OF COMPOSITE function soil resistivity test
Instrument, which includes functional circuit module, and functional circuit module includes soil resistivity part of detecting, GPS Section, clock part and number
According to storage part, soil resistivity part of detecting includes the DC/AC translation functions being connected in turn between power supply and microprocessor
Module, exchange enlarging function module, filter function module, analog acquisition module and reference value sampling module；Described GPS Section
Including GPS location locating module and GPS power management modules；Described clock portion point includes that clock log module and clock are standby
Battery supply module.The utility model will be GPS (point location), clock (time record) function and soil resistivity tester skilful
It is wonderful to become one so that monitoring to same place and the soil resistivity in region and record more conveniently and quickly, also not
Have the possibility of artificial record error.But, the utility model is carried out the position of soil monitoring point and is determined using GPS location,
Prevent from recording the technical scheme of error, design is complicated, and data are not carried out remote transmission to backstage, and carries in processing from the later stage
Take more information.
Publication No.：The utility model of CN202974924U discloses a kind of soil resistivity on-line monitoring system, including
Industrial computer, resistivity acquisition module, environmental data measurement module, data transmission module, remote control computer；Resistivity
Square-wave signal source that acquisition module includes being sequentially connected, multi-center selection switch, electrode；Square-wave signal source, multi-center selection are opened
Close, environmental data measurement module is connected with industrial computer respectively；Data transmission module respectively with industrial computer, remotely control
Computer is connected.The utility model for power system transformer substation or transmission line of electricity present position electric resistance of soil rate score with season
The real time on-line monitoring of section Changing Pattern, its integrated level are high, and high degree of automation, flexible configuration, system reliability are high, realize
The synchronous acquisition and remote transmission of multi-class data, it is practical.The utility model realizes remote on-line monitoring, can be right for a long time
Soil resistivity is monitored, but as a result of industrial computer, increased design cost.
Publication No.：The utility model of CN202693684U discloses a kind of earth resistance monitoring system, and in particular to one
Kind of multi-layer Soil resistivity monitoring system, including data processing centre, at least one monitor, current earthing pole, one
Voltage ground pole and at least two tested ground electrodes, the tested ground electrode are arranged under soil the point for needing to monitor, institute
State data processing centre to be connected with monitor, the monitor respectively with current earthing pole, voltage ground pole and tested ground connection
Electrode is connected, the built-in bin of the monitor.The effect of the utility model is：Realize to same place multi-layer Soil electricity
The artificial instant measurement of resistance rate and unmanned self-timing are measured；Realize the distributed many place multi-layer Soils based on data center
Long-term wired networking monitoring of resistivity or wireless networking monitoring；Realize the transmission to Monitoring Data, issue, preservation, display,
The operations such as inquiry, statistics, analysis, printing.The integrated manual measurement of the utility model and automatic measurement, but its data transfer mode
It is single, for unreasonable data deficiency early warning is processed.
In wind-driven generator grounded screen monitoring system solution, existing monitoring device design is complicated, data transfer
Single, degree of intelligence is low and relatively costly, while can not be to affecting ground connection factor etc. to carry out the test of holonomic system.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of wind-driven generator grounded screen is supervised online
Prior-warning device is surveyed, with least up to long-term fixed point to earth resistance, soil resistivity, the monitoring of soil temperature and humidity and data are remote
Journey is transferred to the effect of background terminal.
The purpose of this utility model is achieved through the following technical solutions：A kind of wind-driven generator grounded screen is supervised online
Prior-warning device is surveyed, it includes master controller, variable frequency constant-current source, switching circuit, soil temperature-moisture sensor, communication module and peripheral hardware
Part；The input/output terminal of the communication module, the input/output terminal of external components input/output terminal respectively with master controller
Connection；The input/output terminal of the soil temperature-moisture sensor is connected with the input/output terminal of master controller；Described variable-frequency constant
Stream source is communicated with master controller by serial ports；The switching circuit includes at least four single pole multiple throws and at least eight branch roads
Interface；
Described variable frequency constant-current source includes real effective computing unit, current transformer, voltage transformer, constant flow regulation
Device, E poles interface, ES poles interface, P poles interface, C poles interface and sinusoidal synthesizer；The current signal of the current transformer is defeated
Go out end to be connected with the current input terminal of real effective computing unit；The voltage signal output end of the voltage transformer with it is very effective
The voltage input end connection of value computing unit；The Regulate signal input/output terminal and constant flow regulation of the real effective computing unit
The Regulate signal input/output terminal connection of device；The control signal output of the constant current regulator and the control of sinusoidal synthesizer
Signal input part connects；
The variable frequency constant-current source is connected with the moved end of the first single pole multiple throw by E poles interface, by ES poles interface with
The moved end connection of the second single pole multiple throw, is connected with the moved end of the 3rd single pole multiple throw by P poles interface, is connect by C poles
Mouth is connected with the moved end of the 4th single pole multiple throw；At least eight described tributary interfaces include E1 poles interface, ES1 poles interface,
P1 poles interface, C1 poles interface, E2 poles interface, ES2 poles interface, P2 poles interface and C2 poles interface；
Moved end does not connect E1 poles interface and E2 poles interface to the two of which of first single pole multiple throw respectively, and described
Moved end does not connect ES1 poles interface and ES2 poles interface to the two of which of two single pole multiple throws respectively, throws out the 3rd hilted broadsword more
Moved end does not connect P1 poles interface and P2 poles interface to the two of which of pass respectively, and the two of which of the 4th single pole multiple throw is not
Moved end connects C1 poles interface and C2 poles interface respectively, described E1 poles interface, ES1 poles interface, P1 poles interface, C1 poles interface, P2
The other end of pole interface and C2 poles interface is connected with tested earth mat, the other end difference of described E2 poles interface and ES2 poles interface
It is connected with grounding body.
Described communication module is optic module, and the interface of the optic module is connected with the communication interface of master controller.
Described soil temperature-moisture sensor is full embedding soil temperature-moisture sensor；Described full embedding soil temperature and humidity
Sensor is communicated with master controller using RS485 bus communications pattern.
Described external components include information storage unit, operation keyboard, Liquid Crystal Module and real-time clock；Described information is stored
The input/output terminal of device, operation keyboard, Liquid Crystal Module and real-time clock is connected with the input/output terminal of master controller respectively.
The serial ports is UART serial ports or SPI interface.
Described single pole multiple throw is single-pole double-throw switch (SPDT).
The beneficial effects of the utility model are：This utility model be applied to long-term fixed point to earth resistance, soil resistivity,
The monitoring of soil temperature and humidity.The different sampling intervals can be set according to the different demands of user, and the data after sampling pass through
Fiber optic network is transmitted to client, it is possible to achieve multimachine Centralizing inspection, while monitor can set alarm door limit value, to point out to use
In the reasonable scope whether the monitored earth mat in family.This utility model also has the characteristics of design is simple, testing efficiency is high.
Description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Specific embodiment
The technical solution of the utility model, but protection domain of the present utility model are described in further detail below in conjunction with the accompanying drawings
It is not limited to described below.
A kind of wind-driven generator grounded screen monitors prior-warning device on-line, and it includes master controller, variable frequency constant-current source, switching electricity
Road, soil temperature-moisture sensor, communication module and external components；The input/output terminal of the communication module, external components it is defeated
Enter outfan to be connected with the input/output terminal of master controller respectively；The input/output terminal of the soil temperature-moisture sensor and master control
The input/output terminal connection of device processed；Described variable frequency constant-current source is communicated with master controller by serial ports；The switching circuit includes
At least four single pole multiple throws and at least eight tributary interfaces；
Described variable frequency constant-current source includes real effective computing unit, current transformer, voltage transformer, constant flow regulation
Device, E poles interface, ES poles interface, P poles interface, C poles interface and sinusoidal synthesizer；The current signal of the current transformer is defeated
Go out end to be connected with the current input terminal of real effective computing unit；The voltage signal output end of the voltage transformer with it is very effective
The voltage input end connection of value computing unit；The Regulate signal input/output terminal and constant flow regulation of the real effective computing unit
The Regulate signal input/output terminal connection of device；The control signal output of the constant current regulator and the control of sinusoidal synthesizer
Signal input part connects；
The variable frequency constant-current source is connected with the moved end of the first single pole multiple throw by E poles interface, by ES poles interface with
The moved end connection of the second single pole multiple throw, is connected with the moved end of the 3rd single pole multiple throw by P poles interface, is connect by C poles
Mouth is connected with the moved end of the 4th single pole multiple throw；At least eight described tributary interfaces include E1 poles interface, ES1 poles interface,
P1 poles interface, C1 poles interface, E2 poles interface, ES2 poles interface, P2 poles interface and C2 poles interface；
Moved end does not connect E1 poles interface and E2 poles interface to the two of which of first single pole multiple throw respectively, and described
Moved end does not connect ES1 poles interface and ES2 poles interface to the two of which of two single pole multiple throws respectively, throws out the 3rd hilted broadsword more
Moved end does not connect P1 poles interface and P2 poles interface to the two of which of pass respectively, and the two of which of the 4th single pole multiple throw is not
Moved end connects C1 poles interface and C2 poles interface respectively, described E1 poles interface, ES1 poles interface, P1 poles interface, C1 poles interface, P2
The other end of pole interface and C2 poles interface is connected with tested earth mat, the other end difference of described E2 poles interface and ES2 poles interface
It is connected with grounding body.
Described communication module is optic module, and the interface of the optic module is connected with the communication interface of master controller.
Described soil temperature-moisture sensor is full embedding soil temperature-moisture sensor；Described full embedding soil temperature and humidity
Sensor is communicated with master controller using RS485 bus communications pattern.
Described external components include information storage unit, operation keyboard, Liquid Crystal Module and real-time clock；Described information is stored
The input/output terminal of device, operation keyboard, Liquid Crystal Module and real-time clock is connected with the input/output terminal of master controller respectively.
The serial ports is UART serial ports or SPI interface.
Described single pole multiple throw is single-pole double-throw switch (SPDT).
As shown in figure 1, master controller is usually a microcontroller (MCU) chip, it is internal to include CPU, RAM, ROM, timing
Enumerator, various I/O and various driving Peripheral Interfaces.Master controller is used as core, the orderly work of distribution and scheduling other parts
Make.Due to the powerful role for generally playing the part of " brain " of its function, it is responsible for data communication, man-machine device's (this with external equipment
In refer to button and carry out LCD Liquid Crystal Modules) interactive and commander's variable frequency constant-current source effectively measure.Variable frequency constant-current source is used as one
Complete module, by being communicated between UART serial ports or SPI interface and master controller, receives order or returns test number
According to.
Measurement of Grounding Resistance process is as follows：After serial ports receives master controller instruction, sine wave synthesizes variable frequency constant-current source
Device is flowed out sine wave is generated by C poles, and returns to E poles through tested earth mat, forms a current loop, and now electric current can be through the
Then signal is delivered to real effective (RMS) computing unit to calculate the size of injection grounded screen electric current by one current transformer, such as
Fruit is deviateed setting value and then drives the first constant current regulator to reach the purpose of constant current.At the same time, ES poles and P poles are in current loop
In certain voltage is sampled by voltage transformer, the voltage also passes through real effective (RMS) computing unit and calculates very
Real voltage, calculates earth resistance resistance finally according to Ohm's law.
Information storage unit will be closed for key message such as alarm door limit value, sampling time interval etc. for storing client's setting
Key information, while also providing extra storage medium for system.Operation keyboard and the essential element that Liquid Crystal Module is man-machine interaction.It is real
Shi Shizhong provides the important informations such as date and Beijing time for monitoring, and interval sampling is necessarily dependent upon this.
After on-line monitoring prior-warning device samples data, server end is upload the data to by communication module, is serviced
Device is carried out storing, is processed to data；Client (PC) is called, is looked into server received data by the network port
Ask, count.By such mode, client end (PC) can be realized the data query of multiple earth resistances, count and remote
Journey real-time monitoring.
Full embedding soil temperature-moisture sensor can with long-term work in being buried in soil, due to test environment it is changeable, main frame
It is indefinite with sensor distance, therefore adopt 485 mode bus.485 bus sample differential mode transmission signals, the anti-interference energy of this mode
Power is strong, and communication distance is remote, meets system requirements.
By switching circuit, the earth resistance of the ground body that achieves a butt joint.Then, calculated by the earth resistance of grounding body
Formula releases soil resistivity come counter.
Instead releasing soil resistivity formula is：
Wherein,
ρ --- soil resistivity, unit Ω m；
L1--- ground connection body length, unit m；
Rd--- grounding body power frequency earthing resistance, unit Ω；
D --- grounding body diameter (or the equivalent hem width of angle steel), unit m.
Above content describes ultimate principle of the present utility model and main feature.It should be understood by those skilled in the art that
Arrive, in the spirit and scope limited without departing from this utility model appended claims, formally with details on to this
The change that utility model is made, is protection domain of the present utility model.
Claims (6)
1. a kind of wind-driven generator grounded screen monitors prior-warning device on-line, it is characterised in that：It includes master controller, frequency-conversion constant-current
Source, switching circuit, soil temperature-moisture sensor, communication module and external components；The input/output terminal of the communication module, peripheral hardware
The input/output terminal of part is connected with the input/output terminal of master controller respectively；The input and output of the soil temperature-moisture sensor
End is connected with the input/output terminal of master controller；Described variable frequency constant-current source is communicated with master controller by serial ports；The switching
Circuit includes at least four single pole multiple throws and at least eight tributary interfaces；
Described variable frequency constant-current source includes real effective computing unit, current transformer, voltage transformer, constant current regulator, E poles
Interface, ES poles interface, P poles interface, C poles interface and sinusoidal synthesizer；The current signal output end of the current transformer with
The current input terminal connection of real effective computing unit；The voltage signal output end of the voltage transformer is calculated with real effective
The voltage input end connection of unit；The Regulate signal input/output terminal of the real effective computing unit and the tune of constant current regulator
Section signal input output end connection；The control signal output of the constant current regulator is defeated with the control signal of sinusoidal synthesizer
Enter end connection；
The variable frequency constant-current source is connected with the moved end of the first single pole multiple throw by E poles interface, by ES poles interface and second
The moved end connection of single pole multiple throw, is connected with the moved end of the 3rd single pole multiple throw by P poles interface, by C poles interface and
The moved end connection of the 4th single pole multiple throw；At least eight described tributary interfaces include E1 poles interface, ES1 poles interface, P1 poles
Interface, C1 poles interface, E2 poles interface, ES2 poles interface, P2 poles interface and C2 poles interface；
Moved end does not connect E1 poles interface and E2 poles interface to the two of which of first single pole multiple throw respectively, and described second is single
Moved end does not connect ES1 poles interface and ES2 poles interface to the two of which of knife multithrow switch respectively, the 3rd single pole multiple throw
Moved end does not connect P1 poles interface and P2 poles interface to two of which respectively, the two of which of the 4th single pole multiple throw not moved end
Connect C1 pole interfaces and C2 poles interface respectively, described E1 poles interface, ES1 poles interface, P1 poles interface, C1 poles interface, P2 poles connect
Mouthful and the other end of C2 poles interface be connected with tested earth mat, the other end of described E2 poles interface and ES2 poles interface respectively with connect
Ground body connection.
2. wind-driven generator grounded screen according to claim 1 monitors prior-warning device on-line, it is characterised in that：Described is logical
Letter module is optic module, and the interface of the optic module is connected with the communication interface of master controller.
3. wind-driven generator grounded screen according to claim 1 monitors prior-warning device on-line, it is characterised in that：Described soil
Earth Temperature Humidity Sensor is full embedding soil temperature-moisture sensor；Described full embedding soil temperature-moisture sensor adopts RS485
Bus communication pattern is communicated with master controller.
4. wind-driven generator grounded screen according to claim 1 monitors prior-warning device on-line, it is characterised in that：Described is outer
If part includes information storage unit, operation keyboard, Liquid Crystal Module and real-time clock；Described information memorizer, operation keyboard, liquid crystal
The input/output terminal of module and real-time clock is connected with the input/output terminal of master controller respectively.
5. wind-driven generator grounded screen according to claim 1 monitors prior-warning device on-line, it is characterised in that：The serial ports
For UART serial ports or SPI interface.
6. wind-driven generator grounded screen according to claim 1 monitors prior-warning device on-line, it is characterised in that：Described list
Knife multithrow switch is single-pole double-throw switch (SPDT).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621103279.7U CN206132853U (en) | 2016-10-08 | 2016-10-08 | Aerogenerator ground net on -line monitoring early warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621103279.7U CN206132853U (en) | 2016-10-08 | 2016-10-08 | Aerogenerator ground net on -line monitoring early warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206132853U true CN206132853U (en) | 2017-04-26 |
Family
ID=58571857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621103279.7U Expired - Fee Related CN206132853U (en) | 2016-10-08 | 2016-10-08 | Aerogenerator ground net on -line monitoring early warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206132853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831369A (en) * | 2017-12-19 | 2018-03-23 | 成都信息工程大学 | A kind of grounding resistance monitor instrument with self-test and correction |
| CN110749777A (en) * | 2019-12-02 | 2020-02-04 | 广西地凯科技有限公司 | Soil resistivity measuring method |
-
2016
- 2016-10-08 CN CN201621103279.7U patent/CN206132853U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831369A (en) * | 2017-12-19 | 2018-03-23 | 成都信息工程大学 | A kind of grounding resistance monitor instrument with self-test and correction |
| CN107831369B (en) * | 2017-12-19 | 2020-07-03 | 成都信息工程大学 | Grounding resistance monitor with self-checking and correcting functions |
| CN110749777A (en) * | 2019-12-02 | 2020-02-04 | 广西地凯科技有限公司 | Soil resistivity measuring method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20181008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |