CN108152707A - Alternating current-direct current mixed running surveys note alarm device in DC circuit system - Google Patents
Alternating current-direct current mixed running surveys note alarm device in DC circuit system Download PDFInfo
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- CN108152707A CN108152707A CN201711386527.2A CN201711386527A CN108152707A CN 108152707 A CN108152707 A CN 108152707A CN 201711386527 A CN201711386527 A CN 201711386527A CN 108152707 A CN108152707 A CN 108152707A
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- direct current
- alternating current
- mixed running
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
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- General Physics & Mathematics (AREA)
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Abstract
The embodiment of the invention discloses alternating current-direct current mixed running measuring and recording device in a kind of DC circuit system, including：DC partial voltage sampling module, exchange partial pressure sampling module, processor module；The DC partial voltage sampling module, exchange partial pressure sampling module are connect with processor module, the anode voltage-to-ground and the alternating current voltage component in cathode voltage-to-ground, DC circuit system being respectively used in acquisition straight-flow system, and it is uploaded to processor module after being converted into digital signal by analog signal.The present invention can show and realize that exchange scurries into the survey of direct current and remembers alarm function to the extraction that can increase alternating current-direct current virtual value component in the signature analysis of alternating current-direct current mixed running failure, straight-flow system in the case where not changing former Insulation Inspection Device for Direct-Current System newly, once alternating current-direct current mixed running accident occurs informs that maintenance personnel's alternating current-direct current mixed running voltage swing alters the circuit of electricity at once, quickly and effectively solution is provided for straight-flow system alternating current-direct current mixed running failure.
Description
Technical field
The present invention relates to DC circuit detection technique field, alternating current-direct current mixed running in especially a kind of DC circuit system
Survey note alarm device.
Background technology
DC system earth fault in electric system be it is a kind of it is easy generation and to the larger failure of electric system harmfulness.
Either either cathode ground connection may all cause false protection or relay fail to plus earth, endanger electric system and normally transport
Row.《People's Republic of China (PRC) power industry standard DL/T856-2004》Define adjusting for different DC system earth faults
Value, when DC system grounding impedance is less than the resistance value, the system of expression has been in failure operation state, needs timely processing.And
Alternating current-direct current mixed running failure in straight-flow system is then Grounding the most serious in straight-flow system, when being sent out in straight-flow system
After raw alternating current-direct current mixed running failure, it is most likely that cause the malfunction of protection, harm tool is big.
According to newest straight-flow system security regulations, after alternating current-direct current mixed running failure occurs for straight-flow system, D.C. isolation
Monitoring device need to send out alarm signal in time, and record the time of failure generation.And existing Insulation Inspection Device for Direct-Current System
Effective solution is not provided to alternating current-direct current mixed running failure, causes straight-flow system that alternating current-direct current mixed running failure occurs
Maintenance personnel is unable to timely processing afterwards, endangers the safety of straight-flow system.
Therefore, the prior art needs to improve.
Invention content
A technical problem to be solved of the embodiment of the present invention is：Alternating current-direct current in a kind of DC circuit system is provided to mix
Note alarm device is surveyed in operation, including：
DC partial voltage sampling module, exchange partial pressure sampling module, processor module；
The DC partial voltage sampling module is connect with processor module, for by the anode voltage-to-ground in straight-flow system and
Cathode voltage-to-ground is uploaded to processor module after being converted into digital signal by analog signal；
The exchange partial pressure sampling module is connect with processor module, for extracting the alternating voltage in DC circuit system
Component, and it is uploaded to processor module after alternating voltage is converted into digital signal by analog signal；
The processor module is used to set the running parameter of DC partial voltage sampling module, exchange partial pressure sampling module, with
And setting alarming threshold parameter, when alternating current-direct current mixed running is more than setting alarming threshold, send out warning information.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, memory module is further included, the data memory module connect with the processor module, set for storage processor module
The running parameter put, and record alarm history data.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, display setup module is further included, the display setup module is connect with the processor module, for the direct current to monitoring
Voltage, alternating voltage, alarm history value are shown, alarming threshold value is set, and is handled by processor module
Afterwards, it is stored in data memory module.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, alarm output module is further included, the alarm output module is connect with the processor module, for processor module
The alarm command sent out is alerted.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, communication module is further included, the communication module is connect with the processor module, for the data of processor module to be believed
Breath is sent to master system.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, the processor module is 32 bit processor modules.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, the communication module includes RS232 interface or RS485 interfaces.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, the alarm output module includes sound alarm unit and light Alarm Unit；
After the alarm output module receives the alarm command that processor module is sent out, the sound of the alarm output module
Sound Alarm Unit sends out alerting tone, and the light Alarm Unit sends out warning light.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, the display setup module includes display screen, LED light and push-button unit；
The display screen shows the DC partial voltage sampling module, the circuit parameter of exchange partial pressure sampling module acquisition is believed
Breath, the setting alarming threshold value information of processor module, alarm history information；
The LED light includes power supply indicator and working station indicator；
The push-button unit includes parameter setting keys and parameter confirms button.
Alternating current-direct current mixed running surveys another implementation of note alarm device in based on the above-mentioned DC circuit system of the present invention
In example, the display screen is 2.8 inches of TFT display screens.
Compared with prior art, the present invention has the following advantages：
The present invention acquires the anode of DC circuit system by DC partial voltage sampling module, exchange partial pressure sampling module in real time
Over the ground, cathode over the ground, AC compounent signal data, and pass through processor module and analysis comparison carried out to the data of acquisition, concurrently
Go out alarm, the present apparatus can be to that can increase alternating current-direct current mixed running newly in the case where not changing former Insulation Inspection Device for Direct-Current System
The extraction display of alternating current-direct current virtual value component and realize that the survey of direct current is scurried into exchange in the signature analysis of failure, straight-flow system
Remember alarm function, once alternating current-direct current mixed running accident occurs informs maintenance personnel's alternating current-direct current mixed running voltage swing i.e. at once
The circuit of electricity is altered, quickly and effectively solution is provided for straight-flow system alternating current-direct current mixed running failure.
Below by drawings and examples, technical scheme of the present invention is described in further detail.
Description of the drawings
The attached drawing of a part for constitution instruction describes the embodiment of the present invention, and is used to explain together with description
The principle of the present invention.
With reference to attached drawing, according to following detailed description, the present invention can be more clearly understood, wherein：
Fig. 1 is the knot of one embodiment that alternating current-direct current mixed running surveys note alarm device in DC circuit system of the invention
Structure schematic diagram.
Fig. 2 is another embodiment that alternating current-direct current mixed running surveys note alarm device in DC circuit system of the invention
Structure diagram.
Fig. 3 is another embodiment that alternating current-direct current mixed running surveys note alarm device in DC circuit system of the invention
Structure diagram.
In figure：1 DC partial voltage sampling module, 2 exchange partial pressure sampling modules, 3 processor modules, 4 memory modules, 5 displays
Setup module, 51 display screens, 52LED indicator lights, 53 push-button units, 6 alarm output modules, 7 communication modules.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Simultaneously, it should be appreciated that for ease of description, the size of the various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need to that it is further discussed.
Fig. 1 is the knot of one embodiment that alternating current-direct current mixed running surveys note alarm device in DC circuit system of the invention
Structure schematic diagram, as shown in Figure 1, alternating current-direct current mixed running survey note alarm device includes in the DC circuit system of the embodiment：
DC partial voltage sampling module 1, exchange partial pressure sampling module 2, processor module 3；
The DC partial voltage sampling module 1 is connect with processor module 3, for by the anode voltage-to-ground in straight-flow system
And cathode voltage-to-ground is converted into after digital signal by analog signal and is uploaded to processor module 3；DC partial voltage sampling module 1 can
Real-time monitoring system Bus Voltage, including working power voltage, positive voltage-to-ground, negative voltage-to-ground；
The exchange partial pressure sampling module 2 is connect with processor module 3, for extracting the alternating current in DC circuit system
Component is pressed, and alternating voltage is converted by analog signal after digital signal and is uploaded to processor module 3；Exchange partial pressure sampling mould
Block 2 can acquire and show alternating current-direct current mixed running voltage in real time；
The processor module 3 is used to set the running parameter of DC partial voltage sampling module 1, exchange partial pressure sampling module 2,
And setting alarming threshold parameter, when alternating current-direct current mixed running is more than setting alarming threshold, send out warning information；
Memory module 4 is further included, the data memory module 4 is connect with the processor module 3, for storing processor
The running parameter that module 3 is set, and record alarm history data；
Display setup module 5 is further included, the display setup module 5 is connect with the processor module 3, for monitoring
DC voltage, alternating voltage, alarm history value shown, alarming threshold value is set, and by processor die
After the processing of block 3, it is stored in data memory module 4；
Processor module 3 by showing that setup module 5 sets various alarming threshold values, including system voltage height get over limit value,
System voltage low more limit value, alternating current-direct current mixed running voltage alarm threshold value；
Alarm output module 6 is further included, the alarm output module 6 is connect with the processor module 3, for processing
The alarm command that device module 3 is sent out is alerted；
Communication module 7 is further included, the communication module 7 is connect with the processor module 3, for by processor module 3
Data information be sent to master system.
In a specific embodiment, the processor module 3 be 32 bit processor modules, DC partial voltage sampling module
1st, exchange partial pressure sampling module 2 includes 16 bit A/D converters of high-precision, and conversion speed is at 1000 times per second or more, and resolution ratio is 1/
More than 50000.
In a specific embodiment, the communication module 7 includes RS232 interface or RS485 interfaces, can pass through
Real-time Monitoring Data and history alarm record data are uploaded to master system by RS232 interface or RS485 interfaces.
In a specific embodiment, the alarm output module 6 includes sound alarm unit and light Alarm Unit；
After the alarm output module 6 receives the alarm command that processor module is sent out, the alarm output module 6
Sound alarm unit sends out alerting tone, and the light Alarm Unit sends out warning light, in one embodiment of the invention, alarm
Output module 6 is alerted defeated using the design of passive contact outputting alarm after alternating current-direct current mixed running failure occurs in straight-flow system
Sound-light alarm can be sent out, and can pass through passive contact outputting alarm signal by going out module 6.
Fig. 2 is another embodiment that alternating current-direct current mixed running surveys note alarm device in DC circuit system of the invention
Structure diagram, as shown in Fig. 2, the display setup module 5 includes display screen 51, LED light 52 and push-button unit 53；
The display screen 51 shows the circuit parameter that the DC partial voltage sampling module 1, exchange partial pressure sampling module 2 acquire
Information, the setting alarming threshold value information of processor module 3, alarm history information, the display screen are 2.8 inches of TFT
Display screen, resolution ratio are 320 × 240, and the display page info of display screen 51 includes：The system mode page, parameter setting page,
The historical record page；
Under the system mode page, real-time display work input voltage, the anode that DC partial voltage sampling module 1 acquires is over the ground
Voltage, cathode voltage-to-ground, the alternating current-direct current mixed running voltage that exchange partial pressure sampling module 2 acquires, if work input voltage
And the alternating current-direct current mixed running voltage of the exchange partial pressure acquisition of sampling module 2 does not exceed the threshold value in parameter setting, then state is shown
" system is normal " is shown as, " electric voltage exception " is shown if DC voltage height is out-of-limit, if alternating current-direct current mixed running voltage surpasses
It crosses setting threshold value and then shows " exchange is abnormal ", " electricity if having DC voltage abnormal and having alternating current-direct current mixed running failure
Reduce off-flavor is normal " it is alternately displayed with " exchanging abnormal "；
Under parameter setting page, the voltage height that video-stream processor module 3 is set crosses the border the low parameter of crossing the border of parameter value, voltage
Value, alternating voltage cross the border parameter value；
Under historical record interface, altering piezoelectric voltage and time when electric fault is altered in the display storage of memory module 4, number
According to storage using dynamic memory pattern, when detecting that the ac voltage scurried into changes more than 2V, storage action can be carried out, is gone through
Data storage item number is 1000 in Records of the Historian record.
The LED light 52 includes power supply indicator and working station indicator, and power supply indicator is used to show equipment
Power supply situation, when equipment is opened and when having power supply power supply, power supply indicator is bright, and otherwise, power supply indicator goes out, and working condition refers to
Show that lamp includes work, normal, three indicator lights of alarm, be respectively used to represent whether equipment works, whether equipment work is normal, accuses
Alert output module 6 whether outputting alarm；
The push-button unit 53 includes parameter setting keys and parameter and confirms button, parameter setting key include preceding page button and
Page button afterwards, parameter confirm that button includes confirming button and returns to button；
Under the system mode page, confirm that button can be turned on and off the work of sound alarm unit by long-press, work as length
By return button can entry time setting, by preceding page button can enter parameter setting page, by rear page button can enter history remember
Record the page；
It under parameter setting page, can modify by preceding page button or rear page button to parameter, page button is joined before short-press
Number plus 1, page button is not put before pinning, and parameter page after 1 second plus 10, short-press subtracts 1 by bond parameter, pins rear page button and does not put,
Parameter subtracted 10 every 1 second, and after the completion of parameter setting, Setting pattern is exited by button is returned；
Under historical record interface, the page-turning function of historical record can be realized by confirmation button, is returned to by button is returned
Nearest one page historical record page.
Fig. 3 is another embodiment that alternating current-direct current mixed running surveys note alarm device in DC circuit system of the invention
Structure diagram, as shown in figure 3, alternating current-direct current mixed running surveys the interface of note alarm device including being in the DC circuit system
The power interface of system power supply, power interface external direct current power supply, power supply voltage range is 48-300V of direct current, alarm output mould
The alarm output interface of block 6, alarm output interface are connect with alarm output module 6, external voice guard and visual alarm,
The communication interface of communication module 7, communication interface include RS232 interface and RS485 interfaces.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with its
The difference of its embodiment, the same or similar part cross-reference between each embodiment.For system embodiment
For, since it is substantially corresponding with embodiment of the method, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
It defends oneself bright.
Description of the invention provides for the sake of example and description, and is not exhaustively or will be of the invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those of ordinary skill in the art is enable to manage
The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (10)
1. alternating current-direct current mixed running surveys note alarm device in a kind of DC circuit system, which is characterized in that including：
DC partial voltage sampling module, exchange partial pressure sampling module, processor module；
The DC partial voltage sampling module is connect with processor module, for by the anode voltage-to-ground and cathode in straight-flow system
Voltage-to-ground is uploaded to processor module after being converted into digital signal by analog signal；
The exchange partial pressure sampling module is connect with processor module, for extracting the alternating voltage in DC circuit system point
Amount, and it is uploaded to processor module after alternating voltage is converted into digital signal by analog signal；
The processor module is used to set the running parameter of DC partial voltage sampling module, exchange partial pressure sampling module, Yi Jishe
Determine alarming threshold parameter, when alternating current-direct current mixed running is more than setting alarming threshold, send out warning information.
2. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 1, which is characterized in that
Memory module is further included, the data memory module is connect with the processor module, for storage processor module setting
Running parameter, and record alarm history data.
3. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 1, which is characterized in that
Further include display setup module, the display setup module is connect with the processor module, for monitoring DC voltage,
Alternating voltage, alarm history value are shown, alarming threshold value is set, and after being handled by processor module, are deposited
Storage is in data memory module.
4. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 1, which is characterized in that
Alarm output module is further included, the alarm output module is connect with the processor module, for being sent out to processor module
Alarm command alerted.
5. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 1, which is characterized in that
Communication module is further included, the communication module is connect with the processor module, for the data information of processor module to be sent out
It send to master system.
6. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 1, which is characterized in that
The processor module is 32 bit processor modules.
7. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 5, which is characterized in that
The communication module includes RS232 interface or RS485 interfaces.
8. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 4, which is characterized in that
The alarm output module includes sound alarm unit and light Alarm Unit；
After the alarm output module receives the alarm command that processor module is sent out, the sound of the alarm output module is accused
Alert unit sends out alerting tone, and the light Alarm Unit sends out warning light.
9. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 3, which is characterized in that
The display setup module includes display screen, LED light and push-button unit；
The display screen shows the DC partial voltage sampling module, the circuit parameter information of exchange partial pressure sampling module acquisition, place
Manage setting alarming threshold value information, the alarm history information of device module；
The LED light includes power supply indicator and working station indicator；
The push-button unit includes parameter setting keys and parameter confirms button.
10. alternating current-direct current mixed running surveys note alarm device in DC circuit system according to claim 9, feature exists
In the display screen is 2.8 inches of TFT display screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711386527.2A CN108152707A (en) | 2017-12-20 | 2017-12-20 | Alternating current-direct current mixed running surveys note alarm device in DC circuit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711386527.2A CN108152707A (en) | 2017-12-20 | 2017-12-20 | Alternating current-direct current mixed running surveys note alarm device in DC circuit system |
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Application publication date: 20180612 |