CN106353563A - Device and method for monitoring voltage quality of power grid - Google Patents
Device and method for monitoring voltage quality of power grid Download PDFInfo
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- CN106353563A CN106353563A CN201610874518.7A CN201610874518A CN106353563A CN 106353563 A CN106353563 A CN 106353563A CN 201610874518 A CN201610874518 A CN 201610874518A CN 106353563 A CN106353563 A CN 106353563A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Abstract
The invention relates to the technical field of power monitoring and dispatching, in particular to a device for monitoring voltage quality of a power grid. The device comprises a voltage collection module (1), a rectifying and filtering module (2), a voltage module (3), a voltage comparison module (4), a timing module (5), a counting module (6), an analyzing and processing module (7) and a display module (8), wherein the voltage module (3) comprises a high-voltage module (31), a low-voltage module (32) and a standard-voltage module (33). The device is mainly used for solving the problem of easiness in monitoring of the quality of the power grid. The invention also discloses a monitoring method. The device has the main beneficial effects that the recording monitoring data of the voltage quality of branch lines and the positioning efficiency is higher; the voltage quality, poor condition occurring time, time length and the like can be accurately obtained, and the dispatching on fault overhauling is more accurate; the defect of the voltage quality can be displayed and warned; the equipment is simple, and the reliability and creditability are higher.
Description
Technical field
The present invention relates to electric power monitoring and dispatching technique field, especially relate to a kind of grid voltage quality monitoring device and
Monitoring method.
Background technology
In order to meet the requirement for power supply reliability, stability, the quality of power supply and high-quality, quick service for the user, electric power
Company is frequently necessary to be monitored for the quality of voltage of electrical network.
Existing voltage quality monitoring is primarily present following defect:
(1) lack the Monitoring Data record for branched line, location efficiency is low；
(2) fault of the fault for burst and daily generation, due to randomness and the uncertainty of its time of origin, often no
Method accurately obtains data, cause actual really there is overvoltage Quality Down, and due to monitoring and time of origin inconsistent it is impossible to
Accurately judge；
(3) cannot be shown for quality of voltage fault and be reported to the police.
For this reason, corresponding voltage quality monitoring device is badly in need of in maintenance department, power scheduling part.
Content of the invention
In order to solve the above problems, the purpose of the present invention is to disclose a kind of grid voltage quality monitoring device and monitoring side
Method, they employ the following technical solutions to realize.
In the embodiment 1 of the present invention, a kind of grid voltage quality monitoring device, including voltage acquisition module, rectification filter
Ripple module, voltage module, voltage comparison module, timing module, counting module, analysis and processing module, display module, voltage module
Including high-pressure modular, low-voltage module, normal voltage module；The outfan of voltage acquisition module connects the input of rectification filtering module
End, the outfan of rectification filtering module connects the voltage sample input of voltage comparison module, the outfan of voltage comparison module
One tunnel connects the input of timing module, the input of another road of outfan connection count module of voltage comparison module, timing
The first input end of the outfan linking parsing processing module of module, the of the outfan linking parsing processing module of counting module
Two inputs, the outfan of analysis and processing module connects the input of display module, and the outfan of high-pressure modular connects voltage ratio
Compared with the high voltage input terminal of module, the outfan of low-voltage module connects the low pressure, input end of voltage comparison module, normal voltage module
Service voltage comparison module, timing module, counting module, analysis and processing module and display module electric power；Wherein:
Voltage acquisition module is used for Real-time Collection line voltage, and scaled line voltage value；
Rectification filtering module is used for carrying out voltage transformation to the line voltage of voltage acquisition module collection, forms DC voltage；
The voltage source of voltage module is stable direct current or alternating current power supply；
High-pressure modular is used for producing the upper voltage limit value that voltage ripple of power network is allowed, this upper voltage limit value and rectification filtering module
The DC voltage of output is adapted；
Low-voltage module is used for producing the lower voltage limit value that voltage ripple of power network is allowed, this lower voltage limit value and rectification filtering module
The DC voltage of output is adapted；
Normal voltage module is used for service voltage comparison module, timing module, counting module, analysis and processing module and display module
Electric power；
Upper voltage limit value that DC voltage that voltage comparison module is used for exporting rectification filtering module, high-pressure modular produce, low
The lower voltage limit value that die block produces is compared, and exports comparative result；
Timing module is used for recording the duration that each quality of voltage declines the initial time occurring and experience；
The number of times that counting module is used for quality of voltage is declined counts；
Analysis and processing module is used for integrated treatment, analysis voltage qualitative data；
Display module is used for showing the quality of line voltage and producing warning function.
In the embodiment 2 of the present invention, a kind of grid voltage quality monitoring device, including voltage acquisition module, rectification filter
Ripple module, voltage module, voltage comparison module, timing module, counting module, analysis and processing module, display module, warning mould
Block, voltage module includes high-pressure modular, low-voltage module, normal voltage module；The outfan of voltage acquisition module connects rectification filter
The input of ripple module, the outfan of rectification filtering module connects the voltage sample input of voltage comparison module, and voltage ratio is relatively
Outfan one tunnel of module connects the input of timing module, another road of outfan connection count module of voltage comparison module
Input, the first input end of the outfan linking parsing processing module of timing module, the outfan linking parsing of counting module
Second input of processing module, a road outfan of analysis and processing module connects the input of display module, analyzes and processes mould
Another road outfan of block connects the input of alarm module, and the high pressure of the outfan connection voltage comparison module of high-pressure modular is defeated
Enter end, the outfan of low-voltage module connects the low pressure, input end of voltage comparison module, normal voltage module service voltage compares mould
Block, timing module, counting module, analysis and processing module, display module and alarm module electric power；Wherein:
Voltage acquisition module is used for Real-time Collection line voltage, and scaled line voltage value；
Rectification filtering module is used for carrying out voltage transformation to the line voltage of voltage acquisition module collection, forms DC voltage；
The voltage source of voltage module is stable direct current or alternating current power supply；
High-pressure modular is used for producing the upper voltage limit value that voltage ripple of power network is allowed, this upper voltage limit value and rectification filtering module
The DC voltage of output is adapted；
Low-voltage module is used for producing the lower voltage limit value that voltage ripple of power network is allowed, this lower voltage limit value and rectification filtering module
The DC voltage of output is adapted；
Normal voltage module is used for service voltage comparison module, timing module, counting module, analysis and processing module and display module
Electric power；
Upper voltage limit value that DC voltage that voltage comparison module is used for exporting rectification filtering module, high-pressure modular produce, low
The lower voltage limit value that die block produces is compared, and exports comparative result；
Timing module is used for recording the duration that each quality of voltage declines the initial time occurring and experience；
The number of times that counting module is used for quality of voltage is declined counts；
Analysis and processing module is used for integrated treatment, analysis voltage qualitative data；
Display module is used for showing the quality of line voltage and producing warning function；
Alarm module is used for voice or the tinkle of bells is reported to the police.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described voltage ratio
Compared with module by the first integrated circuit ic 1, the second integrated circuit ic 2, first resistor r11, second resistance r12,3rd resistor r21,
4th resistance r22 is constituted, and the first integrated circuit and the second integrated circuit are all integrated operational amplifiers, first resistor r11 one end
Connect the negative input end v11 of the first integrated circuit, second resistance r12 one end connects the positive input terminal v12 of the first integrated circuit, the
Three resistance r21 one end connect the negative input end v21 of the second integrated circuit, the 4th resistance r22 one end connects the second integrated circuit
Positive input terminal v22, the outfan of other end connection high-pressure modular of first resistor r11, the other end of the 4th resistance r22 connect low
The other end of the outfan of die block, the other end of second resistance r12 and 3rd resistor r21 and the outfan of rectification filtering module
It is connected, the first integrated circuit ic 1 is connected with the outfan of the second integrated circuit ic 2；The other end of first resistor r11 is electricity
The high voltage input terminal of pressure comparison module, the other end of the 4th resistance r22 is the low pressure, input end of voltage comparison module, second resistance
The exit that the other end of r12 is connected with the other end of 3rd resistor r21 is the voltage sample input of voltage comparison module,
The outfan that first integrated circuit ic 1 is connected with the second integrated circuit ic 2 is the outfan of voltage comparison module.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described first collects
The model of one-tenth circuit ic1 and the second integrated circuit ic 2 is all bg309.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described display mould
Block includes display screen or display screen and display lamp.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that at described analysis
Reason module is data analysis processor.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described warning mould
Block includes buzzer and loudspeaker.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described voltage is adopted
In collection module, there is transformator.
A kind of grid voltage quality monitoring method it is characterised in that employing grid voltage quality monitoring device, described electricity
Net voltage quality monitoring device includes voltage acquisition module, rectification filtering module, voltage module, voltage comparison module, timing mould
Block, counting module, analysis and processing module, display module, voltage module includes high-pressure modular, low-voltage module, normal voltage module；
The outfan of voltage acquisition module connects the input of rectification filtering module, and the outfan of rectification filtering module connects voltage ratio relatively
The voltage sample input of module, outfan one tunnel of voltage comparison module connects the input of timing module, and voltage ratio is compared with mould
The input of another road of outfan connection count module of block, the first of the outfan linking parsing processing module of timing module is defeated
Enter end, the second input of the outfan linking parsing processing module of counting module, the outfan of analysis and processing module connects and shows
Show the input of module, the outfan of high-pressure modular connects the high voltage input terminal of voltage comparison module, the outfan of low-voltage module
Connect voltage comparison module low pressure, input end, normal voltage module service voltage comparison module, timing module, counting module,
Analysis and processing module and display module electric power；Wherein: voltage acquisition module is used for Real-time Collection line voltage, and scaled
Line voltage value；Rectification filtering module is used for carrying out voltage transformation to the line voltage of voltage acquisition module collection, forms direct current
Voltage；The voltage source of voltage module is stable direct current or alternating current power supply；High-pressure modular is used for producing voltage ripple of power network to be permitted
The upper voltage limit value permitted, this upper voltage limit value is adapted with the DC voltage of rectification filtering module output；Low-voltage module is used for producing
The lower voltage limit value that raw voltage ripple of power network is allowed, the DC voltage phase that this lower voltage limit value is exported with rectification filtering module is fitted
Should；Normal voltage module is used for service voltage comparison module, timing module, counting module, analysis and processing module and display module
Electric power；Upper voltage limit value that DC voltage that voltage comparison module is used for exporting rectification filtering module, high-pressure modular produce, low
The lower voltage limit value that die block produces is compared, and exports comparative result；Timing module is used for recording under each quality of voltage
Initial time and the duration of experience that fall occurs；The number of times that counting module is used for quality of voltage is declined counts；At analysis
Reason module is used for integrated treatment, analysis voltage qualitative data；Display module is used for showing the quality of line voltage and producing warning
Effect；Described voltage comparison module is by the first integrated circuit ic 1, the second integrated circuit ic 2, first resistor r11, second resistance
R12,3rd resistor r21, the 4th resistance r22 are constituted, and the first integrated circuit and the second integrated circuit are all integrated operational amplifiers,
First resistor r11 one end connects the negative input end v11 of the first integrated circuit, second resistance r12 one end connects the first integrated circuit
Positive input terminal v12,3rd resistor r21 one end connect the negative input end v21 of the second integrated circuit, the 4th resistance r22 one end even
Meet the positive input terminal v22 of the second integrated circuit, the other end of first resistor r11 connects the outfan of high-pressure modular, the 4th resistance
The other end of r22 connects outfan, the other end of second resistance r12 and the other end of 3rd resistor r21 of low-voltage module and whole
The outfan of stream filtration module is connected, the first integrated circuit ic 1 is connected with the outfan of the second integrated circuit ic 2；First
The other end of resistance r11 is the high voltage input terminal of voltage comparison module, and the other end of the 4th resistance r22 is voltage comparison module
Low pressure, input end, the exit that the other end of second resistance r12 is connected with the other end of 3rd resistor r21 is voltage ratio compared with mould
The voltage sample input of block, the outfan that the first integrated circuit ic 1 is connected with the second integrated circuit ic 2 is voltage ratio compared with mould
The outfan of block；
Described grid voltage quality monitoring method comprises the steps of
Line voltage sampling step: the voltage of electrical network is carried out, by transformator, the electrical network sampling electricity that isolated buck obtains blood pressure lowering
Pressure；
Rectifying and wave-filtering step: the step that the voltage grid sampling of blood pressure lowering is carried out rectifying and wave-filtering, form direct current sampled voltage；
Voltage ratio compared with step: high voltage that the high-pressure modular of direct current sampled voltage and voltage module is produced, voltage module
The low-voltage that low-voltage module produces is compared and carries out exporting low level or high level, when low-voltage≤direct current sampled voltage≤height
During voltage, export low level, on the contrary output high level；
Timing and counting step: each low level time exporting is carried out with timing and the low level number of times of output is carried out
Metering, and row record when in chronological order；
Analyzing and processing and the step of display: counting and timing result are analyzed process and obtain result and shown.
A kind of grid voltage quality monitoring method it is characterised in that employing grid voltage quality monitoring device, described electricity
Net voltage quality monitoring device includes voltage acquisition module, rectification filtering module, voltage module, voltage comparison module, timing mould
Block, counting module, analysis and processing module, display module, alarm module, voltage module includes high-pressure modular, low-voltage module, standard
Voltage module；The outfan of voltage acquisition module connects the input of rectification filtering module, and the outfan of rectification filtering module is even
Connect the voltage sample input of voltage comparison module, outfan one tunnel of voltage comparison module connects the input of timing module,
The input of another road of outfan connection count module of voltage comparison module, the outfan linking parsing of timing module processes mould
The first input end of block, the second input of the outfan linking parsing processing module of counting module, the one of analysis and processing module
Road outfan connects the input of display module, and another road outfan of analysis and processing module connects the input of alarm module,
The outfan of high-pressure modular connects the high voltage input terminal of voltage comparison module, and the outfan of low-voltage module connects voltage comparison module
Low pressure, input end, normal voltage module service voltage comparison module, timing module, counting module, analysis and processing module, display
Module and alarm module electric power；Wherein: voltage acquisition module is used for Real-time Collection line voltage, and scaled line voltage
Value；Rectification filtering module is used for carrying out voltage transformation to the line voltage of voltage acquisition module collection, forms DC voltage；Voltage
The voltage source of module is stable direct current or alternating current power supply；High-pressure modular is used for producing on voltage ripple of power network allowed rations the power supply
Pressure value, this upper voltage limit value is adapted with the DC voltage of rectification filtering module output；Low-voltage module is used for producing line voltage
Fluctuate allowed lower voltage limit value, and this lower voltage limit value is adapted with the DC voltage of rectification filtering module output；Standard electric
Die block is used for service voltage comparison module, timing module, counting module, analysis and processing module and display module electric power；Voltage
The upper voltage limit value that DC voltage that comparison module is used for exporting rectification filtering module, high-pressure modular produce, low-voltage module produce
Raw lower voltage limit value is compared, and exports comparative result；Timing module is used for recording what each quality of voltage decline occurred
Initial time and the duration of experience；The number of times that counting module is used for quality of voltage is declined counts；Analysis and processing module is used
In integrated treatment, analysis voltage qualitative data；Display module is used for showing the quality of line voltage and producing warning function；Report to the police
Module is used for voice or the tinkle of bells is reported to the police；Described voltage comparison module is by the first integrated circuit ic 1, the second integrated circuit ic 2, first
Resistance r11, second resistance r12,3rd resistor r21, the 4th resistance r22 are constituted, and the first integrated circuit and the second integrated circuit are all
It is integrated operational amplifier, first resistor r11 one end connects the negative input end v11 of the first integrated circuit, second resistance r12 one end
Connect the positive input terminal v12 of the first integrated circuit, 3rd resistor r21 one end connects the negative input end v21 of the second integrated circuit, the
Four resistance r22 one end connect the positive input terminal v22 of the second integrated circuit, the other end of first resistor r11 connects high-pressure modular
Outfan, the other end of the 4th resistance r22 connect outfan, the other end of second resistance r12 and the 3rd resistor of low-voltage module
The outfan of the other end of r21 and rectification filtering module is connected, the first integrated circuit ic 1 is defeated with the second integrated circuit ic 2
Go out end to be connected；The other end of first resistor r11 is the high voltage input terminal of voltage comparison module, the other end of the 4th resistance r22
The i.e. low pressure, input end of voltage comparison module, the other end of second resistance r12 and drawing that the other end of 3rd resistor r21 is connected
Go out the voltage sample input that end is voltage comparison module, the first integrated circuit ic 1 is defeated with what the second integrated circuit ic 2 was connected
Go out the outfan that end is voltage comparison module；
Described grid voltage quality monitoring method comprises the steps of
Line voltage sampling step: the voltage of electrical network is carried out, by transformator, the electrical network sampling electricity that isolated buck obtains blood pressure lowering
Pressure；
Rectifying and wave-filtering step: the step that the voltage grid sampling of blood pressure lowering is carried out rectifying and wave-filtering, form direct current sampled voltage；
Voltage ratio compared with step: high voltage that the high-pressure modular of direct current sampled voltage and voltage module is produced, voltage module
The low-voltage that low-voltage module produces is compared and carries out exporting low level or high level, when low-voltage≤direct current sampled voltage≤height
During voltage, export low level, on the contrary output high level；
Timing and counting step: each low level time exporting is carried out with timing and the low level number of times of output is carried out
Metering, and row record when in chronological order；
Analyzing and processing and the step of display: counting and timing result are analyzed process and obtain result and shown and voice
Or the tinkle of bells warning.
The present invention has following main beneficial effect: the voltage quality monitoring data record of branched line can be positioned
In hgher efficiency；Time when can accurately obtain quality of voltage and occur bad and time span etc., the maintenance for fault is adjusted
Degree is more accurate；Quality of voltage defect can be shown and be reported to the police；Equipment is simple, and reliability, credibility are higher.
Brief description
Fig. 1 is the theory diagram of embodiment 1 of the present invention.
Fig. 2 is the theory diagram of voltage comparison module and periphery link block used in the present invention.
Fig. 3 is the theory diagram of embodiment 2 of the present invention.
Specific embodiment
For enabling place technical field personnel to be more clearly understood that and implement the present invention, below in conjunction with the accompanying drawings to being embodied as
Mode is described in more detail, and the label in accompanying drawing and implication are as follows: 1 voltage acquisition module, 2 rectifying and wave-filtering moulds
Block, 3 voltage modules, 31 high-pressure modulars, 32 low-voltage modules, 33 normal voltage modules, 4 voltage comparison module, 5
Timing module, 6 counting modules, 7 analysis and processing module, 8 display modules, 9 alarm modules.
Embodiment 1
Ask for an interview Fig. 1 and Fig. 2, a kind of grid voltage quality monitoring device, including voltage acquisition module 1, rectification filtering module 2, electricity
Die block 3, voltage comparison module 4, timing module 5, counting module 6, analysis and processing module 7, display module 8, voltage module 3 wraps
Include high-pressure modular 31, low-voltage module 32, normal voltage module 33；The outfan of voltage acquisition module 1 connects rectification filtering module 2
Input, the outfan of rectification filtering module 2 connects the voltage sample input of voltage comparison module 4, voltage comparison module 4
Outfan one tunnel connect timing module 5 input, another road of outfan connection count module 6 of voltage comparison module 4
Input, the first input end of the outfan linking parsing processing module 7 of timing module 5, the outfan of counting module 6 connects and divides
Second input of analysis processing module 7, the outfan of analysis and processing module 7 connects the input of display module 8, high-pressure modular 31
Outfan connect the high voltage input terminal of voltage comparison module 4, the outfan of low-voltage module 32 connects the low of voltage comparison module 4
Pressure input, normal voltage module 33 service voltage comparison module 4, timing module 5, counting module 6, analysis and processing module 7 and
Display module 8 electric power；Wherein:
Voltage acquisition module 1 is used for Real-time Collection line voltage, and scaled line voltage value；
Rectification filtering module 2 is used for carrying out voltage transformation to the line voltage of voltage acquisition module 1 collection, forms DC voltage；
The voltage source of voltage module 3 is stable direct current or alternating current power supply；
High-pressure modular 31 is used for producing the upper voltage limit value that voltage ripple of power network is allowed, this upper voltage limit value and rectifying and wave-filtering mould
The DC voltage of block 2 output is adapted；
Low-voltage module 32 is used for producing the lower voltage limit value that voltage ripple of power network is allowed, this lower voltage limit value and rectifying and wave-filtering mould
The DC voltage of block 2 output is adapted；
Normal voltage module 33 is used for service voltage comparison module 4, timing module 5, counting module 6, analysis and processing module 7 and shows
Show module 8 electric power；
The upper voltage limit that DC voltage that voltage comparison module 4 is used for exporting rectification filtering module 2, high-pressure modular 31 produce
The lower voltage limit value that value, low-voltage module 32 produce is compared, and exports comparative result；Described voltage comparison module 4 is by first
Integrated circuit ic 1, the second integrated circuit ic 2, first resistor r11, second resistance r12,3rd resistor r21, the 4th resistance r22 structure
Become, the first integrated circuit and the second integrated circuit are all integrated operational amplifiers, first resistor r11 one end connects the first integrated electricity
The negative input end v11 on road, second resistance r12 one end connect the positive input terminal v12 of the first integrated circuit, 3rd resistor r21 one end
Connect the negative input end v21 of the second integrated circuit, the 4th resistance r22 one end connects the positive input terminal v22 of the second integrated circuit, the
The other end of one resistance r11 connects the outfan of high-pressure modular 31, the other end of the 4th resistance r22 connects the defeated of low-voltage module 32
Go out end, the other end of second resistance r12 is connected with the outfan of the other end of 3rd resistor r21 and rectification filtering module 2, the
One integrated circuit ic 1 is connected with the outfan of the second integrated circuit ic 2；The other end of first resistor r11 is voltage ratio compared with mould
The high voltage input terminal of block 4, the other end of the 4th resistance r22 is the low pressure, input end of voltage comparison module 4, second resistance r12
The exit that the other end is connected with the other end of 3rd resistor r21 is the voltage sample input of voltage comparison module 4, first
The outfan that integrated circuit ic 1 is connected with the second integrated circuit ic 2 is the outfan of voltage comparison module 4；
Timing module 5 is used for recording the duration that each quality of voltage declines the initial time occurring and experience；
The number of times that counting module 6 is used for quality of voltage is declined counts；
Analysis and processing module 7 is used for integrated treatment, analysis voltage qualitative data；
Display module 8 is used for showing the quality of line voltage and producing warning function.
In this embodiment, such as line voltage sampled, form+10v DC voltage nominal value after rectification filtering module, if
The voltage pulsation that electrical network allows is 10%, then obtaining upper voltage limit value is 11v, lower voltage limit value 9v, if voltage ripple of power network, produces
In 9 11v, then the output of voltage comparison module is always high level to raw DC voltage value, when voltage ripple of power network leads generation
DC voltage value outside the scope of 9 11v, then the output of voltage comparison module is always low value, creates action of low-voltage pulse,
Recorded, the like, this device can be inserted in and access on the supply socket of family or auxiliary power circuit, so can be square
Just monitor the quality of line voltage, and can get a desired effect, easy to use, be easy to carry, compact.
Embodiment 2
Ask for an interview Fig. 3, and with reference to Fig. 1 and Fig. 2, a kind of grid voltage quality monitoring device, including voltage acquisition module 1, rectification filter
Ripple module 2, voltage module 3, voltage comparison module 4, timing module 5, counting module 6, analysis and processing module 7, display module 8,
Alarm module 9, voltage module 3 includes high-pressure modular 31, low-voltage module 32, normal voltage module 33；Voltage acquisition module 1 defeated
Go out the input that end connects rectification filtering module 2, the voltage of the outfan connection voltage comparison module 4 of rectification filtering module 2 is adopted
Sample input, outfan one tunnel of voltage comparison module 4 connects the input of timing module 5, the outfan of voltage comparison module 4
The input of another road connection count module 6, the first input end of the outfan linking parsing processing module 7 of timing module 5, meter
Second input of the outfan linking parsing processing module 7 of digital-to-analogue block 6, a road outfan of analysis and processing module 7 connects and shows
Show the input of module 8, another road outfan of analysis and processing module 7 connects the input of alarm module 9, high-pressure modular 31
Outfan connects the high voltage input terminal of voltage comparison module 4, and the outfan of low-voltage module 32 connects the low pressure of voltage comparison module 4
Input, normal voltage module 33 service voltage comparison module 4, timing module 5, counting module 6, analysis and processing module 7, display
Module 8 and alarm module 9 electric power；Wherein:
Voltage acquisition module 1 is used for Real-time Collection line voltage, and scaled line voltage value；
Rectification filtering module 2 is used for carrying out voltage transformation to the line voltage of voltage acquisition module 1 collection, forms DC voltage；
The voltage source of voltage module 3 is stable direct current or alternating current power supply；
High-pressure modular 31 is used for producing the upper voltage limit value that voltage ripple of power network is allowed, this upper voltage limit value and rectifying and wave-filtering mould
The DC voltage of block 2 output is adapted；
Low-voltage module 32 is used for producing the lower voltage limit value that voltage ripple of power network is allowed, this lower voltage limit value and rectifying and wave-filtering mould
The DC voltage of block 2 output is adapted；
Normal voltage module 33 is used for service voltage comparison module 4, timing module 5, counting module 6, analysis and processing module 7 and shows
Show module 8 electric power；
The upper voltage limit that DC voltage that voltage comparison module 4 is used for exporting rectification filtering module 2, high-pressure modular 31 produce
The lower voltage limit value that value, low-voltage module 32 produce is compared, and exports comparative result；Described voltage comparison module 4 is by first
Integrated circuit ic 1, the second integrated circuit ic 2, first resistor r11, second resistance r12,3rd resistor r21, the 4th resistance r22 structure
Become, the first integrated circuit and the second integrated circuit are all integrated operational amplifiers, first resistor r11 one end connects the first integrated electricity
The negative input end v11 on road, second resistance r12 one end connect the positive input terminal v12 of the first integrated circuit, 3rd resistor r21 one end
Connect the negative input end v21 of the second integrated circuit, the 4th resistance r22 one end connects the positive input terminal v22 of the second integrated circuit, the
The other end of one resistance r11 connects the outfan of high-pressure modular 31, the other end of the 4th resistance r22 connects the defeated of low-voltage module 32
Go out end, the other end of second resistance r12 is connected with the outfan of the other end of 3rd resistor r21 and rectification filtering module 2, the
One integrated circuit ic 1 is connected with the outfan of the second integrated circuit ic 2；The other end of first resistor r11 is voltage ratio compared with mould
The high voltage input terminal of block 4, the other end of the 4th resistance r22 is the low pressure, input end of voltage comparison module 4, second resistance r12
The exit that the other end is connected with the other end of 3rd resistor r21 is the voltage sample input of voltage comparison module 4, first
The outfan that integrated circuit ic 1 is connected with the second integrated circuit ic 2 is the outfan of voltage comparison module 4；
Timing module 5 is used for recording the duration that each quality of voltage declines the initial time occurring and experience；
The number of times that counting module 6 is used for quality of voltage is declined counts；
Analysis and processing module 7 is used for integrated treatment, analysis voltage qualitative data；
Display module 8 is used for showing the quality of line voltage and producing warning function；
Alarm module 9 is used for voice or the tinkle of bells is reported to the police.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described first collects
The model of one-tenth circuit ic1 and the second integrated circuit ic 2 can be all the suitable model of bg309 or other.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described display mould
Block includes display screen or display screen and display lamp.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that at described analysis
Reason module is data analysis processor, is commonly called as dsp.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described warning mould
Block includes buzzer and loudspeaker.
A kind of grid voltage quality monitoring device described in any of the above-described embodiment is it is characterised in that described voltage is adopted
In collection module, there is transformator.
Other modules in the present invention, all easily implement for the technical field personnel of place, not only can be according to function
Control oneself making, and can purchase from the market and obtain.
The present invention has following main beneficial effect: the voltage quality monitoring data record of branched line can be positioned
In hgher efficiency；Time when can accurately obtain quality of voltage and occur bad and time span etc., the maintenance for fault is adjusted
Degree is more accurate；Quality of voltage defect can be shown and be reported to the police；Equipment is simple, and reliability, credibility are higher.The present invention
Through using, the big fault of voltage night fluctuation range in the range of the rural power grids of many places has been repaired in reference effectively.
The present invention is not limited to above-mentioned preferred forms it will be appreciated that the design of the present invention can be by other a variety of shapes
Formula is implemented to use, and they also fall within protection scope of the present invention.
Claims (10)
1. a kind of grid voltage quality monitoring device, including voltage acquisition module (1), rectification filtering module (2), voltage module
(3), voltage comparison module (4), timing module (5), counting module (6), analysis and processing module (7), display module (8), voltage
Module (3) includes high-pressure modular (31), low-voltage module (32), normal voltage module (33)；The outfan of voltage acquisition module (1)
Connect the input of rectification filtering module (2), the outfan of rectification filtering module (2) connects the voltage of voltage comparison module (4)
Sampling input, outfan one tunnel of voltage comparison module (4) connects the input of timing module (5), voltage comparison module (4)
Another road of outfan connection count module (6) input, outfan linking parsing processing module (7) of timing module (5)
First input end, the second input of outfan linking parsing processing module (7) of counting module (6), analysis and processing module
(7) outfan connects the input of display module (8), and the outfan of high-pressure modular (31) connects voltage comparison module (4)
High voltage input terminal, the outfan of low-voltage module (32) connects the low pressure, input end of voltage comparison module (4), normal voltage module
(33) service voltage comparison module (4), timing module (5), counting module (6), analysis and processing module (7) and display module (8)
Electric power；Wherein:
Voltage acquisition module (1) is used for Real-time Collection line voltage, and scaled line voltage value；
The line voltage that rectification filtering module (2) is used for that voltage acquisition module (1) is gathered carries out voltage transformation, forms unidirectional current
Pressure；
The voltage source of voltage module (3) is stable direct current or alternating current power supply；
High-pressure modular (31) is used for producing the upper voltage limit value that voltage ripple of power network is allowed, this upper voltage limit value and rectifying and wave-filtering
The DC voltage that module (2) exports is adapted；
Low-voltage module (32) is used for producing the lower voltage limit value that voltage ripple of power network is allowed, this lower voltage limit value and rectifying and wave-filtering
The DC voltage that module (2) exports is adapted；
Normal voltage module (33) is used for service voltage comparison module (4), timing module (5), counting module (6), analyzing and processing
Module (7) and display module (8) electric power；
The upper limit that DC voltage that voltage comparison module (4) is used for exporting rectification filtering module (2), high-pressure modular (31) produce
The lower voltage limit value that magnitude of voltage, low-voltage module (32) produce is compared, and exports comparative result；
Timing module (5) is used for recording the duration that each quality of voltage declines the initial time occurring and experience；
The number of times that counting module (6) is used for quality of voltage is declined counts；
Analysis and processing module (7) is used for integrated treatment, analysis voltage qualitative data；
Display module (8) is used for showing the quality of line voltage and producing warning function.
2. a kind of grid voltage quality monitoring device, including voltage acquisition module (1), rectification filtering module (2), voltage module
(3), voltage comparison module (4), timing module (5), counting module (6), analysis and processing module (7), display module (8), warning
Module (9), voltage module (3) includes high-pressure modular (31), low-voltage module (32), normal voltage module (33)；Voltage acquisition mould
The outfan of block (1) connects the input of rectification filtering module (2), and the outfan of rectification filtering module (2) connects voltage ratio relatively
The voltage sample input of module (4), outfan one tunnel of voltage comparison module (4) connects the input of timing module (5), electricity
The input on another road of outfan connection count module (6) of pressure comparison module (4), the outfan of timing module (5) connects and divides
The first input end of analysis processing module (7), the second input of outfan linking parsing processing module (7) of counting module (6),
No. one outfan of analysis and processing module (7) connects the input of display module (8), and another road of analysis and processing module (7) is defeated
Go out the input that end connects alarm module (9), the outfan of high-pressure modular (31) connects the high input voltage of voltage comparison module (4)
End, the outfan of low-voltage module (32) connects the low pressure, input end of voltage comparison module (4), normal voltage module (33) supply electricity
Pressure comparison module (4), timing module (5), counting module (6), analysis and processing module (7), display module (8) and alarm module
(9) electric power；Wherein:
Voltage acquisition module (1) is used for Real-time Collection line voltage, and scaled line voltage value；
The line voltage that rectification filtering module (2) is used for that voltage acquisition module (1) is gathered carries out voltage transformation, forms unidirectional current
Pressure；
The voltage source of voltage module (3) is stable direct current or alternating current power supply；
High-pressure modular (31) is used for producing the upper voltage limit value that voltage ripple of power network is allowed, this upper voltage limit value and rectifying and wave-filtering
The DC voltage that module (2) exports is adapted；
Low-voltage module (32) is used for producing the lower voltage limit value that voltage ripple of power network is allowed, this lower voltage limit value and rectifying and wave-filtering
The DC voltage that module (2) exports is adapted；
Normal voltage module (33) is used for service voltage comparison module (4), timing module (5), counting module (6), analyzing and processing
Module (7) and display module (8) electric power；
The upper limit that DC voltage that voltage comparison module (4) is used for exporting rectification filtering module (2), high-pressure modular (31) produce
The lower voltage limit value that magnitude of voltage, low-voltage module (32) produce is compared, and exports comparative result；
Timing module (5) is used for recording the duration that each quality of voltage declines the initial time occurring and experience；
The number of times that counting module (6) is used for quality of voltage is declined counts；
Analysis and processing module (7) is used for integrated treatment, analysis voltage qualitative data；
Display module (8) is used for showing the quality of line voltage and producing warning function；
Alarm module (9) is used for voice or the tinkle of bells is reported to the police.
3. a kind of grid voltage quality monitoring device according to claim 1 or claim 2 is it is characterised in that described electricity
Pressure comparison module (4) is by the first integrated circuit ic 1, the second integrated circuit ic 2, first resistor r11, second resistance r12, the 3rd electricity
Resistance r21, the 4th resistance r22 are constituted, and the first integrated circuit and the second integrated circuit are all integrated operational amplifiers, first resistor
R11 one end connects the negative input end v11 of the first integrated circuit, second resistance r12 one end connects the positive input of the first integrated circuit
End v12,3rd resistor r21 one end connect the negative input end v21 of the second integrated circuit, the 4th resistance r22 one end connects the second collection
Become the positive input terminal v22 of circuit, the other end of first resistor r11 connects the outfan of high-pressure modular (31), the 4th resistance r22
The other end connects outfan, the other end of second resistance r12 and the other end of 3rd resistor r21 and the rectification of low-voltage module (32)
The outfan of filtration module (2) is connected, the first integrated circuit ic 1 is connected with the outfan of the second integrated circuit ic 2；First
The other end of resistance r11 is the high voltage input terminal of voltage comparison module (4), and the other end of the 4th resistance r22 is voltage ratio compared with mould
The low pressure, input end of block (4), the exit that the other end of second resistance r12 is connected with the other end of 3rd resistor r21 is electricity
The voltage sample input of pressure comparison module (4), the outfan that the first integrated circuit ic 1 is connected with the second integrated circuit ic 2
The i.e. outfan of voltage comparison module (4).
4. a kind of grid voltage quality monitoring device according to claim 3 is it is characterised in that described first integrated circuit
The model of ic1 and the second integrated circuit ic 2 is all bg309.
5. a kind of grid voltage quality monitoring device according to claim 3 is it is characterised in that described display module includes
Display screen or display screen and display lamp.
6. a kind of grid voltage quality monitoring device according to claim 3 is it is characterised in that described analysis and processing module
For data analysis processor.
7. a kind of grid voltage quality monitoring device according to claim 3 is it is characterised in that described alarm module includes
Buzzer and loudspeaker.
8. a kind of grid voltage quality monitoring device according to claim 3 is it is characterised in that described voltage acquisition module
In there is transformator.
9. a kind of grid voltage quality monitoring method is it is characterised in that employ grid voltage quality monitoring device, described electrical network
Voltage quality monitoring device includes voltage acquisition module (1), rectification filtering module (2), voltage module (3), voltage comparison module
(4), timing module (5), counting module (6), analysis and processing module (7), display module (8), voltage module (3) includes high pressing mold
Block (31), low-voltage module (32), normal voltage module (33)；The outfan of voltage acquisition module (1) connects rectification filtering module
(2) input, the outfan of rectification filtering module (2) connects the voltage sample input of voltage comparison module (4), voltage ratio
Connect the input of timing module (5) compared with outfan one tunnel of module (4), another road of outfan of voltage comparison module (4) is even
Connect the input of counting module (6), the first input end of outfan linking parsing processing module (7) of timing module (5), count
Second input of outfan linking parsing processing module (7) of module (6), the outfan of analysis and processing module (7) connects and shows
Show the input of module (8), the outfan of high-pressure modular (31) connects the high voltage input terminal of voltage comparison module (4), low pressure molding
The outfan of block (32) connects the low pressure, input end of voltage comparison module (4), and normal voltage module (33) service voltage compares mould
Block (4), timing module (5), counting module (6), analysis and processing module (7) and display module (8) electric power；Wherein: voltage acquisition
Module (1) is used for Real-time Collection line voltage, and scaled line voltage value；Rectification filtering module (2) is used for voltage
The line voltage that acquisition module (1) gathers carries out voltage transformation, forms DC voltage；The voltage source of voltage module (3) is stable
Direct current or alternating current power supply；High-pressure modular (31) is used for producing the upper voltage limit value that voltage ripple of power network is allowed, and this is rationed the power supply
The DC voltage that pressure value and rectification filtering module (2) export is adapted；Low-voltage module (32) is used for producing voltage ripple of power network institute
The lower voltage limit value allowing, the DC voltage that this lower voltage limit value and rectification filtering module (2) export is adapted；Standard electric pressing mold
Block (33) is used for service voltage comparison module (4), timing module (5), counting module (6), analysis and processing module (7) and display mould
Block (8) electric power；Voltage comparison module (4) produces for the DC voltage exporting rectification filtering module (2), high-pressure modular (31)
Upper voltage limit value, the lower voltage limit value that produces of low-voltage module (32) is compared, and exports comparative result；Timing module (5)
Decline the duration of the initial time occurring and experience for recording each quality of voltage；Counting module (6) is used for quality of voltage
The number of times declining is counted；Analysis and processing module (7) is used for integrated treatment, analysis voltage qualitative data；Display module (8) is used
In the display quality of line voltage and produce warning function；Described voltage comparison module (4) is by the first integrated circuit ic 1, second
Integrated circuit ic 2, first resistor r11, second resistance r12,3rd resistor r21, the 4th resistance r22 are constituted, the first integrated circuit
And second integrated circuit be all integrated operational amplifier, first resistor r11 one end connect the first integrated circuit negative input end
V11, the positive input terminal v12 of second resistance r12 one end connection the first integrated circuit, the connection second of 3rd resistor r21 one end are integrated
The negative input end v21 of circuit, the 4th resistance r22 one end connect the positive input terminal v22 of the second integrated circuit, first resistor r11
The other end connects the outfan of high-pressure modular (31), the other end of the 4th resistance r22 connects the outfan of low-voltage module (32), the
The other end of two resistance r12 is connected with the outfan of the other end of 3rd resistor r21 and rectification filtering module (2), the first collection
Circuit ic1 is become to be connected with the outfan of the second integrated circuit ic 2；The other end of first resistor r11 is voltage comparison module (4)
High voltage input terminal, the other end of the 4th resistance r22 is the low pressure, input end of voltage comparison module (4), second resistance r12 another
The exit that one end is connected with the other end of 3rd resistor r21 is the voltage sample input of voltage comparison module (4), first
The outfan that integrated circuit ic 1 is connected with the second integrated circuit ic 2 is the outfan of voltage comparison module (4)；
Described grid voltage quality monitoring method comprises the steps of
Line voltage sampling step: the voltage of electrical network is carried out, by transformator, the electrical network sampling electricity that isolated buck obtains blood pressure lowering
Pressure；
Rectifying and wave-filtering step: the step that the voltage grid sampling of blood pressure lowering is carried out rectifying and wave-filtering, form direct current sampled voltage；
Voltage ratio compared with step: high voltage that the high-pressure modular of direct current sampled voltage and voltage module is produced, voltage module
The low-voltage that low-voltage module produces is compared and carries out exporting low level or high level, when low-voltage≤direct current sampled voltage≤height
During voltage, export low level, on the contrary output high level；
Timing and counting step: each low level time exporting is carried out with timing and the low level number of times of output is carried out
Metering, and row record when in chronological order；
Analyzing and processing and the step of display: counting and timing result are analyzed process and obtain result and shown.
10. a kind of grid voltage quality monitoring method is it is characterised in that employ grid voltage quality monitoring device, described electrical network
Voltage quality monitoring device includes voltage acquisition module (1), rectification filtering module (2), voltage module (3), voltage comparison module
(4), timing module (5), counting module (6), analysis and processing module (7), display module (8), alarm module (9), voltage module
(3) high-pressure modular (31), low-voltage module (32), normal voltage module (33) are included；The outfan of voltage acquisition module (1) connects
The input of rectification filtering module (2), the outfan of rectification filtering module (2) connects the voltage sample of voltage comparison module (4)
Input, outfan one tunnel of voltage comparison module (4) connects the input of timing module (5), voltage comparison module (4) defeated
Go out the input holding another road connection count module (6), the of outfan linking parsing processing module (7) of timing module (5)
One input, the second input of outfan linking parsing processing module (7) of counting module (6), analysis and processing module (7)
No. one outfan connects the input of display module (8), and another road outfan of analysis and processing module (7) connects alarm module
(9) input, the outfan of high-pressure modular (31) connects the high voltage input terminal of voltage comparison module (4), low-voltage module (32)
Outfan connect voltage comparison module (4) low pressure, input end, normal voltage module (33) service voltage comparison module (4),
Timing module (5), counting module (6), analysis and processing module (7), display module (8) and alarm module (9) electric power；Wherein: electricity
Pressure acquisition module (1) is used for Real-time Collection line voltage, and scaled line voltage value；Rectification filtering module (2) is used for
The line voltage that voltage acquisition module (1) is gathered carries out voltage transformation, forms DC voltage；The voltage source of voltage module (3)
It is stable direct current or alternating current power supply；High-pressure modular (31) is used for producing the upper voltage limit value that voltage ripple of power network is allowed, should
The DC voltage that upper voltage limit value and rectification filtering module (2) export is adapted；Low-voltage module (32) is used for producing line voltage
Fluctuate allowed lower voltage limit value, and the DC voltage that this lower voltage limit value and rectification filtering module (2) export is adapted；Standard
Voltage module (33) be used for service voltage comparison module (4), timing module (5), counting module (6), analysis and processing module (7) and
Display module (8) electric power；Voltage comparison module (4) is used for DC voltage, the high-pressure modular exporting rectification filtering module (2)
(31) the lower voltage limit value that the upper voltage limit value that produces, low-voltage module (32) produce is compared, and exports comparative result；Meter
When module (5) be used for recording the duration that each quality of voltage declines the initial time occurring and experience；It is right that counting module (6) is used for
The number of times that quality of voltage declines is counted；Analysis and processing module (7) is used for integrated treatment, analysis voltage qualitative data；Display
Module (8) is used for showing the quality of line voltage and producing warning function；Alarm module (9) is used for voice or the tinkle of bells is reported to the police；Institute
State voltage comparison module (4) by the first integrated circuit ic 1, the second integrated circuit ic 2, first resistor r11, second resistance r12,
Three resistance r21, the 4th resistance r22 are constituted, and the first integrated circuit and the second integrated circuit are all integrated operational amplifiers, the first electricity
Resistance r11 one end connects the negative input end v11 of the first integrated circuit, second resistance r12 one end connects the just defeated of the first integrated circuit
Enter to hold v12,3rd resistor r21 one end to connect the negative input end v21 of the second integrated circuit, the 4th resistance r22 one end connection second
The positive input terminal v22 of integrated circuit, the other end of first resistor r11 connect the outfan of high-pressure modular (31), the 4th resistance r22
The other end connect the outfan of low-voltage module (32), the other end of second resistance r12 and the other end of 3rd resistor r21 and whole
The outfan of stream filtration module (2) is connected, the first integrated circuit ic 1 is connected with the outfan of the second integrated circuit ic 2；The
The other end of one resistance r11 is the high voltage input terminal of voltage comparison module (4), the other end of the 4th resistance r22 be voltage ratio relatively
The low pressure, input end of module (4), the exit that the other end of second resistance r12 is connected with the other end of 3rd resistor r21 is
The voltage sample input of voltage comparison module (4), the output that the first integrated circuit ic 1 is connected with the second integrated circuit ic 2
End is the outfan of voltage comparison module (4)；
Described grid voltage quality monitoring method comprises the steps of
Line voltage sampling step: the voltage of electrical network is carried out, by transformator, the electrical network sampling electricity that isolated buck obtains blood pressure lowering
Pressure；
Rectifying and wave-filtering step: the step that the voltage grid sampling of blood pressure lowering is carried out rectifying and wave-filtering, form direct current sampled voltage；
Voltage ratio compared with step: high voltage that the high-pressure modular of direct current sampled voltage and voltage module is produced, voltage module
The low-voltage that low-voltage module produces is compared and carries out exporting low level or high level, when low-voltage≤direct current sampled voltage≤height
During voltage, export low level, on the contrary output high level；
Timing and counting step: each low level time exporting is carried out with timing and the low level number of times of output is carried out
Metering, and row record when in chronological order；
Analyzing and processing and the step of display: counting and timing result are analyzed process and obtain result and shown and voice
Or the tinkle of bells warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874518.7A CN106353563A (en) | 2016-10-08 | 2016-10-08 | Device and method for monitoring voltage quality of power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874518.7A CN106353563A (en) | 2016-10-08 | 2016-10-08 | Device and method for monitoring voltage quality of power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353563A true CN106353563A (en) | 2017-01-25 |
Family
ID=57865924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610874518.7A Withdrawn CN106353563A (en) | 2016-10-08 | 2016-10-08 | Device and method for monitoring voltage quality of power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106353563A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128454A (en) * | 2018-08-24 | 2019-01-04 | 上海沪工焊接集团股份有限公司 | The improvement method of welding machine input voltage precision |
| CN117277591A (en) * | 2023-11-21 | 2023-12-22 | 国网辽宁省电力有限公司 | Power quality monitoring system |
-
2016
- 2016-10-08 CN CN201610874518.7A patent/CN106353563A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128454A (en) * | 2018-08-24 | 2019-01-04 | 上海沪工焊接集团股份有限公司 | The improvement method of welding machine input voltage precision |
| CN109128454B (en) * | 2018-08-24 | 2021-04-20 | 上海沪工焊接集团股份有限公司 | Method for improving input voltage precision of welding machine |
| CN117277591A (en) * | 2023-11-21 | 2023-12-22 | 国网辽宁省电力有限公司 | Power quality monitoring system |
| CN117277591B (en) * | 2023-11-21 | 2024-01-26 | 国网辽宁省电力有限公司 | Power quality monitoring system |
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Application publication date: 20170125 |