CN208872806U - A kind of HVDC transmission line voltage class identification device - Google Patents
A kind of HVDC transmission line voltage class identification device Download PDFInfo
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- CN208872806U CN208872806U CN201821577035.1U CN201821577035U CN208872806U CN 208872806 U CN208872806 U CN 208872806U CN 201821577035 U CN201821577035 U CN 201821577035U CN 208872806 U CN208872806 U CN 208872806U
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Abstract
The embodiment of the present application provides a kind of HVDC transmission line voltage class identification device, including automatic measurement module, manual measurement module, power supply, master switch and manual measurement switch.Automatic measurement module includes the first field strength sensor and alarm, and the first field strength sensor is electrically connected with alarm；Manual measurement module includes distance measuring sensor, signal processor, display and multiple second field strength sensors, and distance measuring sensor, multiple second field strength sensors, display are electrically connected with signal processor；Power supply is electrically connected with master switch, and master switch is electrically connected with automatic measurement module and manual measurement switch respectively, and manual measurement switch is electrically connected with manual measurement module.The embodiment of the present application can carry out real-time measurement and alarm to electric field strength under low-power consumption mode, precise measurement can be carried out to electric field strength, current location and charging equipment distance using manual measurement module, thus it identifies voltage class, realizes comprehensive, accurately nearly electric early warning.
Description
Technical field
This application involves high voltage direct current technical field of operation more particularly to a kind of HVDC transmission line voltage class to know
Other device.
Background technique
When DC power transmission line is run, the charge on conducting wire will generate electric field in space.HVDC transmission line generates
Electric field it is larger, bring security risk to the electric operating personnel at high voltage direct current scene, in order to avoid the generation of electric shock accidents, into
Accurately nearly electric early warning is very important row.
Currently, nearly electricity early warning generallys use non-contact prior-warning device, such as early-warning for high pressure wrist-watch, non-contact high voltage testing are pre-
The prior-warning devices such as pen, early-warning for high pressure device, alarming in short range of electric power device are warned to carry out early warning.The working principle of these prior-warning devices is to examine electricity
Sound-light alarm is issued when the electric field strength of power operating personnel's position near operating personnel is more than threshold value.
But above-mentioned prior-warning device can not learn charging equipment voltage class only using a fixed threshold value as standard.
The safe distance of different voltages grade is different, and safe distance and voltage class are also not linear relationship, for example, the peace of ± 500kV
Full distance is 6m, and the safe distance of ± 800kV is then 9.3m, and being unable to judge accurately electric operating personnel according to electric field strength is
It is no to be within the scope of safe distance.Therefore, under different voltages grade, it is possible that apart from band when existing source of early warning is alarmed
The too far away or too close situation of electric equipment can interfere to work normally too far, electric shock accidents may closely occur excessively.In addition, above-mentioned pre-
Alarm device is only applicable in alternating current, is not suitable for direct current electrical verification.
Utility model content
This application provides a kind of HVDC transmission line voltage class identification devices, close to solve high voltage direct current operation
The problem of electric early warning.
This application provides a kind of HVDC transmission line voltage class identification device, which includes: automatic measurement
Module, manual measurement module, power supply, master switch and manual measurement switch, wherein
The automatic measurement module includes the first field strength sensor and alarm, first field strength sensor and alarm
Electrical connection；
The manual measurement module includes distance measuring sensor, signal processor, display and multiple second field strength sensors,
The distance measuring sensor, multiple second field strength sensors, display are electrically connected with the signal processor；
The power supply is electrically connected with master switch, and the master switch is electrically connected with automatic measurement module and manual measurement switch respectively
It connects, the manual measurement switch is electrically connected with manual measurement module.
Preferably, second field strength sensor includes the electric field information acquisition module being sequentially connected electrically, signal amplification mould
Block, rectification module, filter module and analog-to-digital conversion module.
Preferably, the manual measurement switch includes electric field measurement switch and range measurement switch, and the electric field measurement is opened
Pass is electrically connected with multiple second field strength sensors, and the range measurement switch is electrically connected with distance measuring sensor.
It preferably, further include voice broadcast module, the voice broadcast module is electrically connected with signal processor.
Preferably, the automatic measurement module further includes alarm switch, and the alarm switch is connected electrically in described first
Between strong sensor and alarm.
Preferably, the distance measuring sensor includes laser range sensor, GPS distance measuring sensor, radar range finding sensor
With any one or more sensor in ultrasonic distance-measuring sensor.
HVDC transmission line voltage class identification device beneficial effect provided by the present application includes:
HVDC transmission line voltage class identification device provided by the present application, including automatic measurement module, survey manually
Measure module, power supply, master switch, manual measurement switch.After opening master switch, automatic measurement module is remained operational, automatic measurement
Module includes the first field strength sensor and alarm, can be surveyed in real time to the electric field strength at operating personnel present position
Amount, automatic measurement modular structure is simple, and power consumption is lower, can keep long-play；After the alarm of automatic measurement module, it can pass through
Manual measurement switch starting manual measurement module, carries out essence to electric field strength and the distance between current location and charging equipment
Really measurement, can calculate voltage class according to electric field strength and the distance between current location and charging equipment, to make to make
Industry personnel can be according to the safe distance under the voltage class, it is determined whether can continue close to charging equipment or need separate
Charging equipment, realize high voltage direct current scene comprehensively, accurately nearly electric warning function.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural representation of HVDC transmission line voltage class identification device provided by the embodiments of the present application
Figure；
Fig. 2 is a kind of structural schematic diagram of second field strength sensor provided by the embodiments of the present application.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field
The application protection all should belong in art personnel every other embodiment obtained without making creative work
Range.
The embodiment of the present application provides a kind of HVDC transmission line voltage class identification device, wearable in operation people
On the arm of member, or it is suspended on the front of operating personnel, for realizing nearly electric warning function in high voltage direct current operation field.
It is a kind of knot of HVDC transmission line voltage class identification device provided by the embodiments of the present application referring to Fig. 1
Structure schematic diagram, as shown in Figure 1, HVDC transmission line voltage class identification device provided by the embodiments of the present application, including from
Dynamic measurement module, manual measurement module, power supply, master switch and manual measurement switch.
Specifically, power supply is electrically connected with master switch, master switch is electrically connected with automatic measurement module and manual measurement switch respectively
It connects, manual measurement switch is electrically connected with manual measurement module.
Automatic measurement module includes the first field strength sensor and alarm, and the first field strength sensor is electrically connected with alarm.
Manual measurement module includes signal processor and the distance measuring sensor being electrically connected with signal processor, voice broadcast
Module, display and multiple second field strength sensors.
Distance measuring sensor includes laser range sensor, GPS distance measuring sensor, radar range finding sensor and ultrasonic distance measurement
Any one or more sensor in sensor charges for measuring operating personnel present position and high voltage direct current operation field
The distance between equipment (including HVDC transmission line).
Second field strength sensor is a kind of knot of second field strength sensor provided by the embodiments of the present application referring specifically to Fig. 2
Structure schematic diagram, as shown in Fig. 2, the second field strength sensor includes the electric field information acquisition module being sequentially connected electrically, signal amplification mould
Block, rectification module, filter module and analog-to-digital conversion module.
Electric field information acquisition module acquires the electric field intensity signal of measurement point, is sent to signal amplification module；Signal is put
Big module amplifies processing to electric field intensity signal, convenient for the analysis and processing of next step, after signal amplification module will be handled
Signal be sent to rectification module；The signal that rectification module sends signal amplification module deviates, and is convenient for analog-to-digital conversion mould
Block acquisition, by treated, signal is sent to filter module to rectification module；Filter module includes low-pass filter, to rectification module
The signal of transmission is filtered, thus improve follow-up signal processing analysis accuracy, rectification module will treated letter
Number it is sent to analog-to-digital conversion module；The signal that rectification module is sent is converted digital signal by analog-to-digital conversion module, is convenient for signal
Processor is handled.
In the embodiment of the present application, sensor identical with the second field strength sensor is can be selected in the first field strength sensor.
Distance measuring sensor and the signal of multiple second field strength sensors acquisition are sent to signal processor and are handled, and believe
Number processor can send display for the distance for the electric field strength, distance measuring sensor acquisition that the second field strength sensor acquires and carry out
Display and/or voice broadcast module are broadcasted.
Signal processor can to multiple second field strength sensors acquire signal be averaged after, re-send to display into
Row display and/or voice broadcast module are broadcasted.The embodiment of the present application measures electric-field strength using multiple second field strength sensors
It spends and is averaged, effectively increase the accuracy of electric field intensity measuremenrt.
Further, manual measurement switch include electric field measurement switch and range measurement switch, electric field measurement switch with it is more
A second field strength sensor electrical connection, range measurement switch are electrically connected with distance measuring sensor.Operating personnel can pass through electric field measurement
Switch individually measures electric field strength, is switched by range measurement individually to the distance between current location and charging equipment
It measures, flexibility is high, meets a variety of actual job demands of operating personnel.
Automatic measurement module further includes alarm switch, alarm switch be connected electrically in the first field strength sensor and alarm it
Between.In the present embodiment, the first field strength sensor can be arranged the threshold value of multiple sizes, there are two types of the optional tools of alarm or more
Warning function, when electric field strength reaches different threshold values, can trigger alarm alarmed accordingly, prompting operation people
Member.
In the embodiment of the present application, according to the electric field strength of the distance of distance measuring sensor measurement and the measurement of the second field strength sensor
It may recognize that the voltage class of current high voltage direct current operation, the specific method is as follows:
In advance under different known voltage grade experimental situations, using identification device provided by the present application, band is moved closer to
Multiple groups are included distance and electric field strength by electric equipment, record measurement position and the electric field strength under charging equipment different distance
Measurement data carries out curve fitting, and then calculates the functional relation of the electric field strength and distance under different voltages grade, will
These functional relations are stored in the signal processor of identification device provided by the present application；It is existing in actual high-voltage direct current operation
, using identification device provided by the present application, the measurement point of multiple and different positions is chosen, measures electric field strength and measurement respectively
Point obtains electric field intensity measuremenrt value and distance measure the distance between with charging equipment, and signal processor is by one of them point
The functional relation for not bringing electric field strength and distance under multiple and different voltage class into calculates corresponding function value, will
Function value is compared with corresponding electric field intensity measuremenrt value or distance measure calculated value, the smallest functional relation value of error
Corresponding functional relation is then the functional relation under current voltage grade, to obtain current high voltage direct current operation field
Voltage class.
Since different voltages grade corresponds to different safe distances, operating personnel according to current voltage grade and
Currently at a distance from charging equipment, it may be determined that whether oneself is in outside safe distance range, determines whether to continue to set close to electrification
It is standby, to realize live comprehensive, the accurately nearly electric early warning of high voltage direct current.
As seen from the above-described embodiment, HVDC transmission line voltage class identification device provided by the present application, including from
Dynamic measurement module, manual measurement module, power supply, master switch, manual measurement switch.After opening master switch, automatic measurement module is
It remains operational, automatic measurement module includes the first field strength sensor and alarm, can be to the electricity at operating personnel present position
Field intensity carries out real-time measurement, and automatic measurement modular structure is simple, and power consumption is lower, can keep long-play；Work as automatic measurement
After module alarm, starting manual measurement module can be switched by manual measurement, electric field strength and current location are set with electrification
It is the distance between standby to carry out precise measurement, it may recognize that according to electric field strength and the distance between current location and charging equipment
Voltage class, to enable operating personnel according to the safe distance under the voltage class, it is determined whether can continue close to band
Electric equipment or comprehensive, the accurate nearly electric warning function for needing to realize high voltage direct current scene far from charging equipment.
Since embodiment of above is that reference combination is illustrated on other modes, have between different embodiments
There is identical part, identical, similar part may refer to each other between each embodiment in this specification.Herein no longer in detail
It illustrates.
It should be noted that in the present specification, the relational terms of such as " first " and " second " or the like are used merely to
It distinguishes one entity or operation from another entity or operation, and not necessarily requires or imply these entities or operation
Between there are any this actual relationship or sequences.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the circuit structure, article or the equipment that include a series of elements not only include those
Element, but also including other elements that are not explicitly listed, or further include for this circuit structure, article or equipment
Intrinsic element.In the absence of more restrictions, the element for thering is sentence "including a ..." to limit, it is not excluded that
There is also other identical elements in circuit structure, article or equipment including the element.
Those skilled in the art will readily occur to the application after considering specification and practicing the disclosure of utility model here
Other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these changes
Type, purposes or adaptive change follow the general principle of the application and undocumented in the art including the application
Common knowledge or conventional techniques.The description and examples are only to be considered as illustrative, the true scope and spirit of the application
It is pointed out by the content of claim.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (6)
1. a kind of HVDC transmission line voltage class identification device, which is characterized in that including automatic measurement module, manual survey
Measure module, power supply, master switch and manual measurement switch, wherein
The automatic measurement module includes the first field strength sensor and alarm, and first field strength sensor is electrically connected with alarm
It connects；
The manual measurement module includes distance measuring sensor, signal processor, display and multiple second field strength sensors, described
Distance measuring sensor, multiple second field strength sensors, display are electrically connected with the signal processor；
The power supply is electrically connected with master switch, and the master switch is electrically connected with automatic measurement module and manual measurement switch respectively,
The manual measurement switch is electrically connected with manual measurement module.
2. HVDC transmission line voltage class identification device as described in claim 1, which is characterized in that described second
Strong sensor includes the electric field information acquisition module being sequentially connected electrically, signal amplification module, rectification module, filter module and modulus
Conversion module.
3. HVDC transmission line voltage class identification device as described in claim 1, which is characterized in that the manual survey
Amount switch includes that electric field measurement switchs and range measurement switch, the electric field measurement switch and multiple second field strength sensors
Electrical connection, the range measurement switch are electrically connected with distance measuring sensor.
4. HVDC transmission line voltage class identification device as described in claim 1, which is characterized in that further include voice
Broadcasting module, the voice broadcast module are electrically connected with signal processor.
5. HVDC transmission line voltage class identification device as described in claim 1, which is characterized in that the automatic survey
Measuring module further includes alarm switch, and the alarm switch is connected electrically between first field strength sensor and alarm.
6. HVDC transmission line voltage class identification device as described in claim 1, which is characterized in that the ranging passes
Sensor includes any in laser range sensor, GPS distance measuring sensor, radar range finding sensor and ultrasonic distance-measuring sensor
One or more sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821577035.1U CN208872806U (en) | 2018-09-27 | 2018-09-27 | A kind of HVDC transmission line voltage class identification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821577035.1U CN208872806U (en) | 2018-09-27 | 2018-09-27 | A kind of HVDC transmission line voltage class identification device |
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| CN208872806U true CN208872806U (en) | 2019-05-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335442A (en) * | 2019-07-31 | 2019-10-15 | 国网河南省电力公司漯河供电公司 | A kind of safe distance measuring instrument and its measurement method |
| CN110927470A (en) * | 2019-12-05 | 2020-03-27 | 昆明品启科技有限公司 | Low-frequency electric field positioning system and method |
| CN112053536A (en) * | 2020-09-30 | 2020-12-08 | 江苏兴力建设集团有限公司 | Induction type near live safety distance early warning system and method thereof |
| CN113974587A (en) * | 2021-10-29 | 2022-01-28 | 贵州电网有限责任公司 | Wrist type maintenance operation auxiliary monitoring system |
-
2018
- 2018-09-27 CN CN201821577035.1U patent/CN208872806U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335442A (en) * | 2019-07-31 | 2019-10-15 | 国网河南省电力公司漯河供电公司 | A kind of safe distance measuring instrument and its measurement method |
| CN110927470A (en) * | 2019-12-05 | 2020-03-27 | 昆明品启科技有限公司 | Low-frequency electric field positioning system and method |
| CN112053536A (en) * | 2020-09-30 | 2020-12-08 | 江苏兴力建设集团有限公司 | Induction type near live safety distance early warning system and method thereof |
| CN113974587A (en) * | 2021-10-29 | 2022-01-28 | 贵州电网有限责任公司 | Wrist type maintenance operation auxiliary monitoring system |
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