CN205509664U - Photovoltaic grid -connected inverter monitoring system - Google Patents
Photovoltaic grid -connected inverter monitoring system Download PDFInfo
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- CN205509664U CN205509664U CN201620334473.XU CN201620334473U CN205509664U CN 205509664 U CN205509664 U CN 205509664U CN 201620334473 U CN201620334473 U CN 201620334473U CN 205509664 U CN205509664 U CN 205509664U
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- voltage
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- acquisition terminal
- inverter
- monitoring system
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Abstract
The utility model discloses a photovoltaic grid -connected inverter monitoring system, including remote monitoring center, electric wire netting acquisition terminal, dc -to -ac converter acquisition terminal and power module, the dc -to -ac converter acquisition terminal includes treater, a carrier communication module and a sensor module, and a sensor module handles the operation back with the data of collection through the treater, gives remote monitoring center for remote monitoring center, electric wire netting acquisition terminal with the local electric wire netting data transmission who gathers with data transmission through a carrier communication module. Realized among the grid -connected PV power generation system system can judge whether miniature dc -to -ac converter damages to the functions such as fault detection of solar cell panel's fault monitoring and dc -to -ac converter.
Description
Technical field
This utility model belongs to technical field of electric power, relates to a kind of photovoltaic DC-to-AC converter suppressing harmonic wave and electromagnetic interference, especially relates to
And to a kind of photovoltaic combining inverter monitoring system.
Background technology
Photovoltaic DC-to-AC converter occupies critical role in photovoltaic generating system, is monitored its running status being to ensure that whole generating system
Unite properly functioning key.Flourish along with photovoltaic generation industry, the malfunction monitoring problem that photovoltaic DC-to-AC converter brings the most more is come
More being paid close attention to by people, serious photovoltaic panel or fault of converter not only affect the properly functioning of power equipment itself, grid-connected
Also electrical network will be impacted during operation.
Summary of the invention
According to above the deficiencies in the prior art, technical problem to be solved in the utility model is to propose a kind of photovoltaic combining inverter
Monitoring system, monitors the operational factor of inverter in real time by the long-range monitoring node of inverter, by Parameter analysis, monitors inversion
The operation conditions of device.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of photovoltaic combining inverter monitoring system,
Including remote monitoring center, electrical network acquisition terminal, inverter acquisition terminal and power module, described inverter acquisition terminal includes
Processor, first carrier communication module and first sensor module, first sensor module by gather data at processor
After reason computing, send the data to remote monitoring center by first carrier communication module, the local that electrical network acquisition terminal will gather
Electric network data is sent to remote monitoring center.
Described first sensor module include DC current collecting unit, DC voltage collecting unit, AC voltage sampling unit and
AC current collecting unit, correspondence gathers inverter DC terminal and the voltage exchanging end, electric current respectively.Described DC voltage collection
Unit includes Hall voltage sensor and low pass filter.Described power module includes Switching Power Supply, LM7815, LM7915 tri-end
Regulated power supply and AMS1117 manostat, Switching Power Supply through LM7815 and LM7915 three-terminal voltage-stabilizing power supply transfer to ± 15V give suddenly
That voltage sensor and low pass filter are powered, and being converted into 3.3V power supply through AMS1117 manostat is that processor is powered.Described inverse
Become device acquisition terminal and also include that the first relay control module, the first relay control module include AC relay and direct current relay
Device, AC relay is connected to AC voltage sampling unit and AC current collecting unit, and DC relay is connected to DC current
Collecting unit, DC voltage collecting unit, processor output low and high level controls the break-make of AC-DC relay.Described electrical network is adopted
Collection terminal includes that the second carrier communication module and the second sensor assembly and controller, the second sensor assembly gather local power net electricity
Pressure value, after controller analyzes and processes, is uploaded to remote monitoring center by the second carrier communication module.Described electrical network gathers eventually
End also includes that the second relay control module, the second relay control module connect the second sensor assembly, and controller is by output
Low and high level gives the second relay control module, controls the second sensor assembly Acquisition Circuit break-make.Described remote monitoring center bag
Including computer monitor end and the 3rd carrier communication module, computer monitor end is gathered eventually by the 3rd carrier communication module poll management electrical network
End, inverter acquisition terminal.
This utility model provides the benefit that: achieve in grid-connected photovoltaic system the malfunction monitoring of solar panel and inverse
The functions such as the fault detect of change device, system can interpolate that whether Miniature inverter damages.
Accompanying drawing explanation
Below the content expressed by this specification accompanying drawing and the labelling in figure are briefly described:
Fig. 1 is the inverter acquisition terminal structure chart of detailed description of the invention of the present utility model.
Fig. 2 is the electrical network acquisition terminal structure chart of detailed description of the invention of the present utility model.
Fig. 3 is the remote monitoring center structure chart of detailed description of the invention of the present utility model.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, each component that detailed description of the invention of the present utility model is the most involved
Mutual alignment between shape, structure, each several part and annexation, the effect of each several part and operation principle, manufacturing process and behaviour
Make using method etc., be described in further detail, to help those skilled in the art to inventive concept of the present utility model, skill
Art scheme has more complete, accurate and deep understanding.
Main thought of the present utility model is: monitoring system includes that remote monitoring center, electrical network acquisition terminal and inverter gather eventually
End, by the monitoring parameter of electrical network acquisition terminal, inverter acquisition terminal is uploaded to remote monitoring center in real time, remotely monitors
Data are analyzed processing by center, it is achieved the malfunction monitoring to inverter.
In photovoltaic DC-to-AC converter long distance control system, each photovoltaic DC-to-AC converter will be disposed a monitor node, complete inverter
The collection of operational factor, process and wireless data sending function, inverter acquisition terminal includes that core processor, first carrier are logical
Letter module, first sensor module, display alarm and key-press module, first sensor module completes inverter DC terminal and exchanges
The measurement of alterating and direct current current voltage of end, first sensor module include DC current collecting unit, DC voltage collecting unit,
AC voltage sampling unit and AC current collecting unit, the data gathered are processed after computing by sensor through core processor,
Realize data by first carrier communication module to exchange, finally node data is sent to remote monitoring center.Core processor master
The AD conversion of the data of acquisition module to be completed and calculation process, to judge whether operational factor transfinites；First carrier communication mould
Block mainly completes the communication of internodal data；Display alarm and key-press module be mainly used in show inverter collect operational factor,
Start alarm module when operational factor exceedes limit value, key-press module is then arranged for output parameter, and power module is each node
Energy is provided.
Inverter acquisition terminal also includes that the first relay control module, the first relay control module include that AC relay is with straight
Current relay, relay control module is electrically connected to processor, is connected with first carrier communication module by RS485 interface, hands over
DC relay is connected respectively and is accessed exchange end and the DC terminal of inverter, processor output low and high level control alternating current-direct current relay
The break-make of device.
This utility model uses LV25-P Hall voltage sensor to complete DC voltage and ac voltage measurement, and ac current measurement selects
Use LTS6-NP Hall current sensor.The measurement scope of LV25-P Hall voltage sensor is relatively wide, the output letter of DC voltage
Needing to process through modulate circuit before number delivering to core processor again, the low pass filter of modulate circuit is used for filtering unidirectional current
Higher hamonic wave in the sensor output voltage of pressure.Hall AC current sensor uses+5V power supply to power, and believes with DC voltage
Number identical, need to add low pass filter to filter higher hamonic wave.
The Switching Power Supply of power module one ± 24V of employing is as main power supply, through LM7815 and LM7915 three-terminal voltage-stabilizing electricity
Source transfers to ± and 15V powers to the integrated transporting discharging of Hall voltage sensor and modulate circuit, and 15V power conversion is 5V by LM7805
Power to current sensor, then be converted into 3.3V power supply through AMS1117 and be core processor and wireless transport module is powered.
Electrical network acquisition terminal includes the second carrier communication module and the second sensor assembly and controller, in electrical network acquisition terminal
Two sensor assemblies gather local power net magnitude of voltage and are uploaded to remote monitoring center, and the second sensor assembly is with first sensor mould
Block is identical, gathers DC voltage, current value, alternating voltage, current value.
Electrical network acquisition terminal also includes that the second relay control module, the second relay control module include AC relay and direct current
Relay, the second relay control module is electrically connected to controller, is connected with carrier communication module by RS485 interface, hands over straight
Current relay series connection respectively enters exchange end and the DC terminal of local power net, controller output low and high level control alternating current-direct current relay
The break-make of device.
When local power net (cell panel) output voltage is more than the startup voltage of Miniature inverter, detect at remote monitoring center
Inverter ac is zero, then judge that this Miniature inverter damages.When photovoltaic module generation open fault, output voltage is equal to
Open-circuit voltage, output electric current is equal to zero.When photovoltaic module is short-circuited fault, output voltage is equal to zero.When photovoltaic module list
Body cell piece be short-circuited fault time, the output electric current of assembly will not change, and output voltage can reduce.
Remote monitoring center includes computer monitor end and the 3rd carrier communication module, and computer monitor end passes through the 3rd carrier communication module
Complete the poll management to all of electrical network acquisition terminal and inverter acquisition terminal, data acquisition, record and show each terminal
Duty.3rd Power Line Carrier Communication Module receives the collection of computer monitor end transmission, control command is converted to carrier wave letter
Number and be sent to each terminal, receive carrier signal that control terminal for data acquisition transmits and be converted to rs 232 serial interface signal, being gone here and there by RS485
Line interface is sent to computer monitor end.
Above in conjunction with accompanying drawing, this utility model is exemplarily described, it is clear that this utility model implements not by above-mentioned side
The restriction of formula, as long as have employed the improvement of the various unsubstantialities that method of the present utility model design is carried out with technical scheme, or not
Improved design of the present utility model and technical scheme are directly applied to other occasion, all at protection domain of the present utility model
Within.Protection domain of the present utility model should be as the criterion with the protection domain that claims are limited.
Claims (8)
1. photovoltaic combining inverter monitoring system, it is characterised in that include remote monitoring center, electrical network acquisition terminal, inverse
Becoming device acquisition terminal and power module, described inverter acquisition terminal includes processor, first carrier communication module and the first sensing
Device module, the data gathered are processed after computing, by first carrier communication module by number by first sensor module through processor
According to being sent to remote monitoring center, the local power net data of collection are sent to remote monitoring center by electrical network acquisition terminal.
Photovoltaic combining inverter the most according to claim 1 monitoring system, it is characterised in that described first sensor module
Including DC current collecting unit, DC voltage collecting unit, AC voltage sampling unit and AC current collecting unit, respectively
Corresponding collection inverter DC terminal and the voltage exchanging end, electric current.
Photovoltaic combining inverter the most according to claim 2 monitoring system, it is characterised in that described DC voltage gathers single
Unit includes Hall voltage sensor and low pass filter.
Photovoltaic combining inverter the most according to claim 3 monitoring system, it is characterised in that described power module includes out
Closing power supply, LM7815, LM7915 three-terminal voltage-stabilizing power supply and AMS1117 manostat, Switching Power Supply is through LM7815 and LM7915
Three-terminal voltage-stabilizing power supply transfers to ± and 15V powers to Hall voltage sensor and low pass filter, is converted into 3.3V through AMS1117 manostat
Power supply is that processor is powered.
Photovoltaic combining inverter the most according to claim 2 monitoring system, it is characterised in that described inverter acquisition terminal
Also include that the first relay control module, the first relay control module include AC relay and DC relay, exchange relay
Device is connected to AC voltage sampling unit and AC current collecting unit, and DC relay is connected to DC current collecting unit, straight
Stream voltage acquisition unit, processor output low and high level controls the break-make of AC-DC relay.
Photovoltaic combining inverter the most according to claim 1 monitoring system, it is characterised in that described electrical network acquisition terminal bag
Including the second carrier communication module and the second sensor assembly and controller, the second sensor assembly gathers local power net magnitude of voltage and passes through
After controller analyzing and processing, it is uploaded to remote monitoring center by the second carrier communication module.
Photovoltaic combining inverter the most according to claim 6 monitoring system, it is characterised in that described electrical network acquisition terminal is also
Including the second relay control module, the second relay control module connects the second sensor assembly, and controller is by output height
Level gives the second relay control module, controls the second sensor assembly Acquisition Circuit break-make.
Photovoltaic combining inverter the most according to claim 1 monitoring system, it is characterised in that described remote monitoring center bag
Including computer monitor end and the 3rd carrier communication module, computer monitor end is gathered eventually by the 3rd carrier communication module poll management electrical network
End, inverter acquisition terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620334473.XU CN205509664U (en) | 2016-04-20 | 2016-04-20 | Photovoltaic grid -connected inverter monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620334473.XU CN205509664U (en) | 2016-04-20 | 2016-04-20 | Photovoltaic grid -connected inverter monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205509664U true CN205509664U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620334473.XU Expired - Fee Related CN205509664U (en) | 2016-04-20 | 2016-04-20 | Photovoltaic grid -connected inverter monitoring system |
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| CN (1) | CN205509664U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346899A (en) * | 2017-08-28 | 2017-11-14 | 国网江西省电力公司电力科学研究院 | A kind of photovoltaic power station system stability assessment method and system |
| WO2023000826A1 (en) * | 2021-07-20 | 2023-01-26 | 阳光电源股份有限公司 | Inverter and alternating current fault identification method for photovoltaic system |
-
2016
- 2016-04-20 CN CN201620334473.XU patent/CN205509664U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346899A (en) * | 2017-08-28 | 2017-11-14 | 国网江西省电力公司电力科学研究院 | A kind of photovoltaic power station system stability assessment method and system |
| CN107346899B (en) * | 2017-08-28 | 2020-08-11 | 国网江西省电力公司电力科学研究院 | Photovoltaic power station system stability assessment method and system |
| WO2023000826A1 (en) * | 2021-07-20 | 2023-01-26 | 阳光电源股份有限公司 | Inverter and alternating current fault identification method for photovoltaic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20170420 |