CN106253262A - A kind of natural gas system power distribution equipment and control method - Google Patents
A kind of natural gas system power distribution equipment and control method Download PDFInfo
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- CN106253262A CN106253262A CN201610624473.8A CN201610624473A CN106253262A CN 106253262 A CN106253262 A CN 106253262A CN 201610624473 A CN201610624473 A CN 201610624473A CN 106253262 A CN106253262 A CN 106253262A
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- signal
- natural gas
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- switch
- gas system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/06—Two-wire systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of natural gas system power distribution equipment and control method, including: the first switch, it is used for being switched on or switched off described natural gas system；Concentration of natural gas detector, for detecting the concentration of natural gas；C signal modular converter, it connects concentration of natural gas monitor, receives concentration of natural gas data and export concentration abnormality signal；Control unit, including controller, fault processing module and switch control module, fault processing module connects controller and switch control module, and controller receives concentration abnormality signal and sends alarm；Wherein, controller is by the transmission of concentration abnormality signal to fault processing module, and fault processing module receives concentration abnormality signal and sends and switch off signal to switch control module；Wherein, switch control module connects the first switch, and switch control module controls the first switch and closes.The power distribution equipment of the present invention sends alarm and disconnects the power supply circuits of natural gas system natural gas abnormal concentrations, improves the level of security of natural gas system.
Description
Technical field
The present invention relates to natural gas transportation art.It is more particularly related to a kind of natural gas system power distribution equipment
And control method.
Background technology
Natural gas system includes a series of devices such as Gas Exploitation acquisition means, natural gas transmission device and power distribution equipment, its
In, power distribution equipment is to metering and the distributor of control electric energy.Layout should meet the requirement that power system is properly functioning, it is simple to inspection
Repair, do not jeopardize the safety of the person and surrounding devices.Wherein, the power distribution equipment of natural gas system has particular/special requirement to safety, typically
Power distribution equipment be difficult to meet its safety requirements.
Summary of the invention
It is an object of the present invention to provide a kind of natural gas system power distribution equipment, detection of natural gas instrument is by the concentration of natural gas of detection
Abnormal signal transmission is to controller, and controller receives signal and sends alarm command to alarm unit, and alarm unit sends police
Report controls natural gas system switch simultaneously and forms open circuit, it is to avoid the danger that natural gas leaking causes, and meets natural gas system to joining
The safety requirements of electric installation.
It is a still further object of the present invention to provide the control method of a kind of natural gas system power distribution equipment, N number of right gas concentration
Concentration abnormality signal and concentration normal signal, fault processing module is exported respectively after C signal modular converter and controller process
With evaluation factor, concentration abnormality signal and concentration normal signal are estimated, and it is logical to control natural gas system according to evaluation factor
Electricity or power-off.
In order to realize according to object of the present invention and further advantage, it is provided that a kind of natural gas system power distribution equipment,
Including:
, including positive direct-current bus and negative dc bus, between described positive direct-current bus and negative dc bus, there is voltage in bus
Difference is for providing voltage to natural gas system；
First switch, it is connected on the connection circuit of natural gas system and positive direct-current bus, is used for being switched on or switched off institute
State the connection of natural gas system and bus；
Concentration of natural gas detector, it is for detecting the concentration of natural gas in air；
C signal modular converter, it connects concentration of natural gas monitor, described C signal change-over circuit reception concentration of natural gas
Data also export concentration abnormality signal；
Control unit, including controller, fault processing module and switch control module, described fault processing module connects control
Device processed and switch control module, described controller receives concentration abnormality signal and sends alarm；Wherein, controller is by concentration abnormality
Signal transmits to fault processing module, and described fault processing module receives concentration abnormality signal and sends and switch off signal to opening
Close control module；
Wherein, described switch control module connects the first switch, and described switch control module controls the first switch and closes.
Preferably, also include:
Voltage measurement unit, it connects described positive direct-current bus and negative dc bus respectively, is used for measuring supply voltage；
Current measuring unit, its be connected to described in be connected on the connection circuit of natural gas system and positive direct-current bus, use
Supply current in natural gas system.
Preferably, described voltage measurement unit includes:
Pressure measuring instrument, it is used for measuring described supply voltage and being converted into analog voltage signal；
U low pass filter, it connects pressure measuring instrument, and described U low pass filter receives analog voltage signal and to simulation
The noise of voltage signal filters；
U signal modular converter, it connects U low pass filter, the simulation electricity that described U signal change-over circuit reception process filters
Pressure signal is also converted into voltage output signal.
Preferably, described current measuring unit includes:
Current measuring instrument, it is for measuring the power supply current value of natural gas system and being converted into analog current signal；
I low pass filter, it connects current measuring instrument, for receiving analog current signal and making an uproar analog current signal
Sound filters；
I signal modular converter, it connects I low pass filter, is used for the analog current signal after receiving filtration and will simulate
Current signal is converted into current output signal.
Preferably, described control unit also includes:
Arc-detection module, it connects voltage measurement unit and current measuring unit, is used for judging whether that electric arc is also
Output and arc stiffness analogue signal；
Load detecting module, it connects current measuring unit, for being carried out with setting electric current by described current output signal
Compare and output loading is normal or abnormal signal；
Power detection module, its connection voltage measurement unit and current measuring unit, described power detection module receives institute
State voltage output signal and current output signal, and it is normal or different that bearing power and setting power are compared rear output
Regular signal；
Wherein, described arc-detection module, load detecting module and power detection module connect fault processing module, described
Fault processing module sends switch and opens or closes signal to switch control module, and switch control module controls the first switch and opens
Or close.
The purpose of the present invention realizes also by the control method of a kind of natural gas system power distribution equipment, including following step
Rapid:
Step 1, N number of concentration of natural gas detector monitor the concentration of natural gas of natural gas system diverse location simultaneously；I-th
Concentration of natural gas detector is by the concentration of natural gas of tReal-time Transmission is to C signal modular converter；
Step 2, C signal modular converter receive concentration of natural gasAnd to concentrationWith higher limitCompare:
WhenTime, C signal modular converter output concentration abnormality signal；
WhenTime, C signal modular converter output concentration normal signal；
Step 3, fault processing module receive n concentration abnormality signal and (N-n) individual concentration normal signal by controller,
And signal is estimated, when evaluation factor κ >=0.00172, described fault processing module sends and switches off signal；
Step 4, switch control module receive to switch off signal and control first and switch off, and make natural gas system break
Electricity.
Preferably, described evaluation factor κ is:
Wherein, jAFor the gas gas diffusivity at normal temperatures and pressures of natural gas, cm2/s；ψ is C signal modular converter
The concentration abnormality signal of corresponding i-th concentration of natural gas detector output or normal signal.
Preferably, when C signal modular converter exports concentration abnormality signal, ψ=1；When C signal modular converter exports concentration
Normal signal, ψ=0.
Preferably, as evaluation factor κ, < when 0.00172, described fault processing module sends switch connection signal, described
Switch control module receives switch connection signal and controls the first switch and remain turned on, and makes natural gas system remain powered on.
The present invention at least includes following beneficial effect: 1, power distribution equipment detection of natural gas instrument detects concentration of natural gas, right
Abnormal concentrations sends alarm and disconnects the power supply circuits of natural gas system, improves the level of security of natural gas system, meets natural
The gas system safety requirements to power distribution equipment.2, power distribution equipment coordinates its control method, comments abnormal concentration of natural gas
Estimate, the impact on system of the intelligent decision abnormal concentrations, thus control natural gas system and be switched on or switched off.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this
Invention research and practice and be understood by the person skilled in the art.
Accompanying drawing explanation
Fig. 1 is the annexation figure of the natural gas power distribution equipment of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition
Word can be implemented according to this.
Should be appreciated that used herein such as " have ", " comprising " and " including " term do not allot one or many
Other element individual or the existence of a combination thereof or interpolation.
Fig. 1 shows the natural gas system power distribution equipment one way of realization according to the present invention, including alarm unit, control
Unit and the first switch, natural gas system connects positive direct-current bus and negative dc bus as load, and the first switch is arranged on sky
So on the connection line of gas system and positive direct-current bus, for being switched on or switched off the power supply circuits of natural gas system: control unit
Connecting the first switch and alarm unit, the signal transmission that alarm unit is detected controls first to control unit, control unit
Switch on-off, thus be switched on or switched off the power supply circuits of natural gas system, natural gas system is protected.
As it is shown in figure 1, bus includes positive direct-current bus and negative dc bus, between described positive direct-current bus and negative dc bus
There is voltage difference for providing voltage to natural gas system.
First switch S1 is connected on the connection circuit of natural gas system and positive direct-current bus, is used for being switched on or switched off described
Natural gas system and the connection of bus；Wherein, the first switch S1 also sets up signal receiving module, is used for receiving switch control module
Switch off or connect signal, first switch S1 turns off or ON Action according to signal correspondence.
Alarm unit includes concentration of natural gas detector, C signal modular converter and alarm, and described concentration of natural gas detects
Instrument connects C signal modular converter, and multiple concentration of natural gas detectors are placed on the diverse location of natural gas system, it are supervised in real time
The concentration of the natural gas of the natural gas system diverse location surveyed is transmitted to C signal modular converter；C signal modular converter receives natural
Gas concentration, compares real-time concentration of natural gas with upper limit of concentration value, output concentration normal signal or concentration abnormality signal,
By " 0 " indicated concentration normal signal, with " 1 " indicated concentration abnormal signal；Wherein, described C signal modular converter connects controller,
Controller receives concentration normal signal or concentration abnormality signal；Its connection controller of alarm, when controller receives concentration abnormality
Signal, described alarm is reported to the police.
Control unit includes controller, fault processing module and switch control module, and described fault processing module connects control
Device processed and switch control module, described controller is used for receiving controller and receives concentration normal signal or concentration abnormality signal；Its
In, concentration normal signal or concentration abnormality signal are transmitted to fault processing module by controller, and described fault processing module receives
Signal, and send after signal is processed and switch off signal or switch to switch connection signal；Switch control module is electrically connected
Meeting described first switch S1, it receives and switches off signal or switch to switch connection signal, and sends the signal to first and open
Close the signal receiving module of S1, control the order that the first switch S1 performs to disconnect or connect.
In another embodiment, power distribution equipment also includes voltage measurement unit and current measuring unit；Voltage measurement unit
Connect described positive direct-current bus and negative dc bus respectively, be used for measuring supply voltage；Current measuring unit, it is connected to described
It is connected on the connection circuit of natural gas system and positive direct-current bus, for the supply current of natural gas system.Described voltage is surveyed
Amount unit includes pressure measuring instrument, U low pass filter and U signal modular converter, and pressure measuring instrument connects positive direct-current bus and bears
Dc bus, is used for measuring described supply voltage and being converted into analog voltage signal；U low pass filter connects pressure measuring instrument,
Described U low pass filter receives analog voltage signal and filters the noise of analog voltage signal；U signal modular converter is even
Connecing U low pass filter, described U signal change-over circuit receives the analog voltage signal through filtering and is converted into voltage output letter
Number.Described current measuring unit includes current measuring instrument, I low pass filter and I signal modular converter；Current measuring instrument is arranged on
On the connection circuit of natural gas system and positive direct-current bus, for measuring the power supply current value of natural gas system and being converted into simulation
Current signal；I low pass filter connects current measuring instrument, for receiving analog current signal the noise to analog current signal
Filter；I signal modular converter connects I low pass filter, is used for the analog current signal after receiving filtration and by electric for simulation
Stream signal is converted into current output signal.
In another embodiment, described control unit also includes arc-detection module, load detecting module and power detection
Module: as it is shown in figure 1, arc-detection module connects voltage measurement unit and current measuring unit, it receives voltage output signal
And current output signal, based on fault electric arc algorithm for pattern recognition, voltage output signal and current output signal are processed,
Judge whether there is electric arc between positive direct-current bus and negative dc bus and export arc stiffness analogue signal；Load detecting module is even
Connecing current measuring unit, it receives current output signal, and described current output signal is compared with setting electric current and exported
Load normal or abnormal signal, for judging that the supply current loading natural gas system is the most normal；Power detection module connects
Voltage measurement unit and current measuring unit, its reception voltage output signal and current output signal, and computational load power, will
Bearing power and setting power compare that rear output is normal or abnormal signal, for judging to load the merit of natural gas system
Rate is the most normal.Wherein, described arc-detection module, load detecting module and power detection module connect fault processing module,
Described fault processing module receives arc stiffness analogue signal, sends and switches off signal to switch control module, on-off control
Module controls the first switch S1 and disconnects, it is to avoid natural gas system is by electric arc influence；Described fault processing module is just receiving load
Often or abnormal signal, when receiving load normal signal, sending switch connection signal, switch control module controls the first switch S1 and connects
Lead to or be continuously turned on；When receiving load abnormal signal, send and switch off signal to switch control module, switch control module control
System the first switch S1 disconnects.Described fault processing module receives that power is normal or abnormal signal, when receiving power normal signal, sends out
Going out switch connection signal, switch control module controls the first switch S1 and connects or be continuously turned on；When receiving power abnormal signal, send out
Go out to switch off signal to disconnect to switch control module, switch control module control the first switch S1.
In another embodiment, described power distribution equipment also includes protection circuit, including switch S2, switch S3, switch S4, electricity
Resistance R, inductance L and electric capacity C, it is achieved precharge effect.In pre-charge process, switch S1 conducting, switch S2, S3 disconnect, switch
S4 turns on, thus realizes being pre-charged electric capacity C, can avoid damage load natural gas system.
The control method of a kind of natural gas system power distribution equipment, comprises the following steps:
Step 1, N number of concentration of natural gas detector monitor the concentration of natural gas of natural gas system diverse location simultaneously；Wherein,
I-th concentration of natural gas detector is by the concentration of natural gas of tReal-time Transmission is to C signal modular converter；
Step 2, C signal modular converter receive concentration of natural gasAnd to concentrationWith higher limitCompare:
WhenTime, C signal modular converter output concentration abnormality signal 1；
WhenTime, C signal modular converter output concentration normal signal 0；
Step 3, fault processing module receive n concentration abnormality signal and (N-n) individual concentration normal signal by controller,
And signal is estimated, described evaluation factor κ is:
Wherein, jAFor natural gas gas diffusivity at normal temperatures and pressures, cm2/s；ψiCorresponding for C signal modular converter
The concentration abnormality signal of i-th concentration of natural gas detector output or normal signal.When C signal modular converter exports concentration abnormality
Signal, ψi=1；When C signal modular converter exports concentration normal signal, ψi=0.
When evaluation factor κ >=0.00172, described fault processing module sends and switches off signal；Switch control module
Reception switches off signal and controls first and switch off, and makes natural gas system power-off.
As evaluation factor κ, < when 0.00172, described fault processing module sends switch connection signal, described on-off control mould
Block receives switch connection signal and controls the first switch and remain turned on, and makes natural gas system remain powered on.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed
Use.It can be applied to various applicable the field of the invention completely.For those skilled in the art, can be easily
Realize other amendment.Therefore, under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (9)
1. a natural gas system power distribution equipment, it is characterised in that including:
, including positive direct-current bus and negative dc bus, there is voltage difference between described positive direct-current bus and negative dc bus and use in bus
In providing voltage to natural gas system；
First switch, it is connected on the connection circuit of natural gas system and positive direct-current bus, is used for being switched on or switched off described sky
So gas system and connection of bus；
Concentration of natural gas detector, it is for detecting the concentration of natural gas in air；
C signal modular converter, it connects concentration of natural gas monitor, described C signal change-over circuit reception concentration of natural gas data
And export concentration abnormality signal；
Control unit, including controller, fault processing module and switch control module, described fault processing module connects controller
And switch control module, described controller receives concentration abnormality signal and sends alarm；Wherein, controller is by concentration abnormality signal
Transmission is to fault processing module, and described fault processing module receives concentration abnormality signal and sends and switch off signal to switching control
Molding block；
Wherein, described switch control module connects the first switch, and described switch control module controls the first switch and closes.
2. natural gas system power distribution equipment as claimed in claim 1, it is characterised in that also include:
Voltage measurement unit, it connects described positive direct-current bus and negative dc bus respectively, is used for measuring supply voltage；
Current measuring unit, its be connected to described in be connected on the connection circuit of natural gas system and positive direct-current bus, for sky
So supply current of gas system.
3. natural gas system power distribution equipment as claimed in claim 2, it is characterised in that described voltage measurement unit includes:
Pressure measuring instrument, it is used for measuring described supply voltage and being converted into analog voltage signal；
U low pass filter, it connects pressure measuring instrument, and described U low pass filter receives analog voltage signal and to analog voltage
The noise of signal filters；
U signal modular converter, it connects U low pass filter, the analog voltage letter that described U signal change-over circuit reception process filters
Number and be converted into voltage output signal.
4. natural gas system power distribution equipment as claimed in claim 3, it is characterised in that described current measuring unit includes:
Current measuring instrument, it is for measuring the power supply current value of natural gas system and being converted into analog current signal；
I low pass filter, it connects current measuring instrument, for receiving analog current signal and entering the noise of analog current signal
Row filters；
I signal modular converter, it connects I low pass filter, is used for the analog current signal after receiving filtration and by analog current
Signal is converted into current output signal.
5. natural gas system power distribution equipment as claimed in claim 4, it is characterised in that described control unit also includes:
Arc-detection module, it connects voltage measurement unit and current measuring unit, is used for judging whether electric arc and exporting
With arc stiffness analogue signal；
Load detecting module, it connects current measuring unit, for being compared with setting electric current by described current output signal
And output loading is normal or abnormal signal；
Power detection module, it connects voltage measurement unit and current measuring unit, the described power detection module described electricity of reception
Pressure output signal and current output signal, and bearing power and setting power are compared the normal or abnormal letter of rear output
Number；
Wherein, described arc-detection module, load detecting module and power detection module connect fault processing module, described fault
Processing module sends switch and opens or closes signal to switch control module, and switch control module controls the first switch and beats and open or close
Close.
6. the control method of a natural gas system power distribution equipment, it is characterised in that comprise the following steps:
Step 1, N number of concentration of natural gas detector monitor the concentration of natural gas of natural gas system diverse location simultaneously；I-th is natural
Gas concentration detector is by the concentration of natural gas of tReal-time Transmission is to C signal modular converter；
Step 2, C signal modular converter receive concentration of natural gasAnd to concentrationWith higher limitCompare:
WhenTime, C signal modular converter output concentration abnormality signal；
WhenTime, C signal modular converter output concentration normal signal；
Step 3, fault processing module receive n concentration abnormality signal and (N-n) individual concentration normal signal by controller, and right
Signal is estimated, and when evaluation factor κ >=0.00172, described fault processing module sends and switches off signal；
Step 4, switch control module receive to switch off signal and control first and switch off, and make natural gas system power-off.
7. the control method of natural gas system power distribution equipment as claimed in claim 6, it is characterised in that described evaluation factor κ
For:
Wherein, jAFor the gas gas diffusivity at normal temperatures and pressures of natural gas, cm2/s；ψ is that C signal modular converter is corresponding
The concentration abnormality signal of i-th concentration of natural gas detector output or normal signal.
8. the control method of natural gas system power distribution equipment as claimed in claim 7, it is characterised in that when C signal modulus of conversion
Block output concentration abnormality signal, ψ=1；When C signal modular converter exports concentration normal signal, ψ=0.
9. the control method of natural gas system power distribution equipment as claimed in claim 6, it is characterised in that when evaluation factor κ <
When 0.00172, described fault processing module sends switch connection signal, and described switch control module receives switch connection signal also
Control the first switch to remain turned on, make natural gas system remain powered on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624473.8A CN106253262B (en) | 2016-08-01 | 2016-08-01 | A kind of natural gas system power distribution equipment and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610624473.8A CN106253262B (en) | 2016-08-01 | 2016-08-01 | A kind of natural gas system power distribution equipment and control method |
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| Publication Number | Publication Date |
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| CN106253262A true CN106253262A (en) | 2016-12-21 |
| CN106253262B CN106253262B (en) | 2018-12-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101112U (en) * | 2014-10-20 | 2015-01-14 | 合肥燃气集团有限公司 | Based on the intelligent gas-meter system of STM32 |
| CN204424865U (en) * | 2014-11-14 | 2015-06-24 | 伊顿公司 | Power distribution equipment |
| CN105547579A (en) * | 2015-11-30 | 2016-05-04 | 蚌埠大洋传感系统工程有限公司 | Transmitter with explosion-proof function |
| CN205402252U (en) * | 2016-03-31 | 2016-07-27 | 丹东建成燃气安全技术有限公司 | Public clothes gas metering leaks alarm control ware |
-
2016
- 2016-08-01 CN CN201610624473.8A patent/CN106253262B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204101112U (en) * | 2014-10-20 | 2015-01-14 | 合肥燃气集团有限公司 | Based on the intelligent gas-meter system of STM32 |
| CN204424865U (en) * | 2014-11-14 | 2015-06-24 | 伊顿公司 | Power distribution equipment |
| CN105547579A (en) * | 2015-11-30 | 2016-05-04 | 蚌埠大洋传感系统工程有限公司 | Transmitter with explosion-proof function |
| CN205402252U (en) * | 2016-03-31 | 2016-07-27 | 丹东建成燃气安全技术有限公司 | Public clothes gas metering leaks alarm control ware |
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| Publication number | Publication date |
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| CN106253262B (en) | 2018-12-14 |
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