CN116722758B - Micro inverter control system - Google Patents
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- CN116722758B CN116722758B CN202311005706.2A CN202311005706A CN116722758B CN 116722758 B CN116722758 B CN 116722758B CN 202311005706 A CN202311005706 A CN 202311005706A CN 116722758 B CN116722758 B CN 116722758B
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- 238000000034 method Methods 0.000 claims description 15
- 230000005855 radiation Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 9
- 230000006872 improvement Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000005457 optimization Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000013139 quantization Methods 0.000 claims description 3
- 231100000279 safety data Toxicity 0.000 claims description 3
- 238000011895 specific detection Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 2
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- 230000002708 enhancing effect Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20945—Thermal management, e.g. inverter temperature control
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The invention discloses a micro-inverter control system, which particularly relates to the field of inverter control.
Description
Technical Field
The invention relates to the technical field of inverter control, in particular to a micro inverter control system.
Background
In the current power system, the micro-inverter control system plays an increasingly important role, the technology not only can convert a direct-current power supply into alternating current, but also can carry out power grid interconnection, the micro-inverter control system plays a vital role due to instability and intermittence of renewable energy, and can convert unstable direct-current power into stable alternating-current power supply through accurate control and communication functions and realize seamless connection with a smart grid, and the micro-inverter control system becomes a key technology for promoting clean energy transformation and power system optimization along with the development of renewable energy and the smart grid.
The existing inverter control system does not adopt advanced circuit design and control algorithm, can not realize high-efficiency energy conversion when converting direct-current energy into alternating-current energy, does not have an accurate power regulation function, can not adjust output power in real time according to power requirements, and can not ensure stability and reliability of the system under various working conditions.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a micro-inverter control system to solve the above-mentioned problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a micro-inverter control system, comprising:
region dividing module: the method comprises the steps of dividing a target inverter region into control subareas according to the equal number, numbering each subarea, and marking the subareas as 1,2, … … and n respectively;
an input module: receiving input signals of a target inverter, including current, voltage, temperature and humidity, and control signals from a human-computer interface, and converting the input signals into digital signals;
and a detection module: detecting the received digital signals, and simultaneously monitoring and recording the working state and environmental parameters of the target inverter;
and a power density improving module: analyzing the working state of the target inverter and making corresponding improvement measures;
and the early warning module is used for: estimating the risk rate of the target inverter according to the working state parameters and the environment parameters of the target inverter, and sending an early warning to a remote control module;
and a remote control module: receiving early warning, and carrying out remote optimization control and fault removal on the target inverter through intelligent management;
database: the system is used for storing the safe working state parameters of the target inverter and storing the standard working parameters used by the target inverter;
the input signal is converted into a digital signal, and the specific conversion mode is as follows:
referring to the data of the sampler used by the target inverter, according to the preset sampling rate of the sampler data used by the target inverter, sampling the input signal by the sampler according to the preset sampling rate, discretizing the input signal in time to obtain a series of discrete sample values, numbering, and respectively recording as；
Will beCarrying out quantization processing by a quantizer, mapping into discrete numerical values, representing the discrete numerical values as corresponding ternary codes, and encoding the corresponding ternary codes into a digital signal form according to a ternary encoding mode for output;
the detection module detects the working state and the environmental parameters of the target inverter, and the specific detection mode is as follows:
laying a plurality of circuits provided with temperature and humidity sensors in each control subarea of a target inverter area, wherein the circuits provided with the temperature and humidity sensors are in one-to-one correspondence with each control subarea, one end of each circuit is positioned in each appointed monitoring subarea of the target inverter area, the circuits are marked as the circuit tail ends of each control subarea of the target inverter area, and the other ends of the circuits are positioned in a monitoring area corresponding to the target inverter and are marked as the starting ends of the circuits;
performing voltage and current test on each control subarea in the target inverter area to obtain target inverter working state parameters of each control subarea of the target inverter area, wherein the working state parameters of the target inverter comprise current, voltage, frequency and power, and the current, the voltage, the frequency and the power of the target inverter are respectively marked asWhere i=1, 2, … …, m, i denotes the number of the i-th control sub-region;
the method comprises the steps of monitoring environmental parameters of inverters of all control subareas of a target inverter through a temperature and humidity sensor to obtain the environmental parameters of the inverters of all control subareas of the target inverter, wherein the environmental parameters of the target inverter comprise temperature and humidity, and the temperature and the humidity of the inverters of all control subareas of the target inverter are respectively recorded asWhere j is represented as the number of the j-th control sub-region, j=1, 2, … …, v;
the specific analysis mode of the detection module to the working state of the target inverter is as follows:
current of target inverter for each control subarea of target inverter areaVoltage->Frequency->Power ofTemperature->Humidity->Substituted into formula
The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the operating state proportionality coefficient of the inverter of each control subarea in the target inverter area, wherein ∈>、/>、/>And +.>Respectively expressed as preset inverter current influence factor, voltage influence factor, frequency influence factor and power influence factor, a is expressed as natural constant,/or->、/>、/>And +.>Expressed as a preset error value allowed during operation of the inverter,/>The temperature and humidity of the inverter, respectively expressed as each control sub-area of the target inverter area;
comparing the working state proportionality coefficient of the inverter of each control subarea of the target inverter area with the standard working state proportionality coefficient of the inverter of each control subarea of the preset target inverter area, if the working state proportionality coefficient of the inverter corresponding to a certain control subarea is larger than or equal to the standard working state proportionality coefficient of the inverter of each control subarea of the preset target inverter area, indicating that the inverter corresponding to the control subarea is in a normal working state, otherwise, indicating that the inverter corresponding to the control subarea is in an abnormal working state;
the power density improving module calculates the heat radiation performance coefficient of the target inverter in the following specific calculation modes:
referring to production parameters of a target inverter through a production instruction, obtaining the surface area of the target inverter of each control subarea of the target inverter area, and recording the surface area of the target inverter of each control subarea of the target inverter area as S;
obtaining the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operation by using the temperature sensor of each control subarea of the target inverter area, and recording the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operation as the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operationEnsuring that the input power of the target inverter of each control subarea of the target inverter area is the same, and recording the temperature of the target inverter of each control subarea of the target inverter area after a period of time after the target inverter works for a period of time>Analysis->，/>Obtaining the temperature change index of the target inverter in each control subarea of the target inverter area；
Analyzing the heat dissipation coefficient of the target inverter in each control sub-area of the target inverter areaThe method comprises the steps of carrying out a first treatment on the surface of the Wherein->Risk influencing factor corresponding to preset temperature change, < ->An influence factor for influencing the target inverter in each control region of the target inverter region;
the heat radiation performance of the target inverter is improved, and the specific improvement mode is as follows:
wherein the influencing factorThe heat radiation structure comprises a heat radiation structure of a target inverter, the area of an air outlet and heat radiation materials;
counting the radiator types of the target inverters in each control subarea of the target inverter area, determining that the radiator types of the target inverters in each control subarea of the target inverter area are consistent, classifying the radiator performance of the target inverters according to the service time of the target inverters, counting the radiator performance grades of all the target inverters, comparing the radiator performance grades of the target inverters with the preset standard radiator performance grades of the target inverters, counting the target inverters with the radiator performance grades lower than the preset standard radiator performance grades of the target inverters, numbering the target inverters with the radiator performance grades lower than the preset standard radiator performance grades of the target inverters, and recording as；
Arranging staff pairsReplacing the radiator and ensuring that the replaced radiator is of the same type;
the early warning module is specifically used for:
setting the standard temperature of each control subarea in the target inverter area as by actual measurementThe standard humidity is set to->J is the j-th control sub-area, j=1, 2, … …, v, and the standard use time length and the actual use time length of the statistical target inverter are respectively recorded as R Label (C) ，R Real world By targeted inversion of each control sub-region of the targeted inverter regionLine detection of the inverter, obtaining the actual operating power of the target inverter +.>；
Analyzing risk index of target inverter in each control subarea of target inverter area
；
Wherein the method comprises the steps of、/>And->For the safety influence factors corresponding to the temperature and humidity, the using time and the power in the preset target inverter area, +.>The allowable difference value between the standard power of the preset target inverter and the actual power of the target inverter is expressed;
the risk index zeta of the target inverter in each control subarea of the target inverter area and the risk index threshold value of the target inverter in each control subarea of the preset standard target inverter area are obtainedIn contrast, if the risk index ζ of the target inverter in each control sub-region of the target inverter region is not 0 to +_>Zeta, the early warning module sends out early warning to the remote control module, wherein->ζ is denoted as the risk index threshold value +.>And the allowable difference value of the risk index zeta of the target inverter in each control subarea of the target inverter area.
As a further improvement of the invention, the processing mode of the early warning signal by the remote control module is as follows:
when the early warning sent by the early warning module is received, the remote control module automatically finds out the target inverter in the abnormal working state in each control subarea of the target inverter area, sends a command to the detection module, the detection module receives the command, detects the target inverter in the abnormal working state to obtain the abnormal parameters of the target inverter in the abnormal working state, feeds the abnormal parameters of the target inverter back to the remote control module, and the remote control module compares the abnormal parameters of the target inverter with safety data in the database to obtain a comparison result, and makes a solution to the comparison result to eliminate faults.
The invention has the technical effects and advantages that:
1. high-efficiency energy conversion: the micro inverter control system adopts advanced circuit design and control algorithm, and realizes high-efficiency energy conversion when converting direct-current energy into alternating-current energy, which means that the system can maximally utilize renewable energy and reduce energy loss.
2. Accurate power adjustment: the inverter control system has an accurate power regulation function, and can regulate output power in real time according to power requirements. Therefore, the user can control the distribution of energy according to actual conditions, and more flexible and intelligent energy management is realized.
3. High reliability: advanced fault detection and protection mechanisms are adopted in the micro inverter control system, so that stability and reliability of the system under various working conditions are ensured. The system can operate normally even in severe environments, thereby significantly reducing maintenance and replacement costs.
Drawings
FIG. 1 is a diagram illustrating a system module connection according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a micro inverter control system, which includes a region dividing module, an input module, a detection module, a power density enhancing module, an early warning module, a remote control module, and a database.
The area dividing module is connected with the input module, the input module is connected with the detection module, the detection module is connected with the power density lifting module and the remote control module, the power density lifting module is connected with the early warning module, the early warning module is connected with the remote control module, and the remote control module is connected with the database.
The region dividing module is used for dividing the target inverter region into control subareas according to the equal number, and numbering each subarea, which is respectively marked as 1,2, … … and n.
The input module receives input signals of the target inverter, including current, voltage, temperature, humidity, and control signals from a human-machine interface, and converts the input signals into digital signals.
In one possible design, the input module converts the input signal into a digital signal, specifically in the following manner:
referring to the data of the sampler used by the target inverter, according to the preset sampling rate of the sampler data used by the target inverter, sampling the input signal by the sampler according to the preset sampling rate, discretizing the input signal in time to obtain a series of discrete sample values, numbering, and respectively recording as；
Will beAnd carrying out quantization processing by a quantizer, mapping into discrete numerical values, representing the discrete numerical values as corresponding ternary codes, and encoding the corresponding ternary codes into a digital signal form according to a ternary encoding mode for output.
The detection module detects the received digital signals and monitors and records the working state and the environmental parameters of the target inverter.
In one possible design, the detection module detects the working state and the environmental parameter of the target inverter, and the specific detection mode is as follows:
laying a plurality of circuits provided with temperature and humidity sensors in each control subarea of a target inverter area, wherein the circuits provided with the temperature and humidity sensors are in one-to-one correspondence with each control subarea, one end of each circuit is positioned in each appointed monitoring subarea of the target inverter area, the circuits are marked as the circuit tail ends of each control subarea of the target inverter area, and the other ends of the circuits are positioned in a monitoring area corresponding to the target inverter and are marked as the starting ends of the circuits;
performing voltage and current test on each control subarea in the target inverter area to obtain target inverter working state parameters of each control subarea of the target inverter area, wherein the working state parameters of the target inverter comprise current, voltage, frequency and power, and the current, the voltage, the frequency and the power of the target inverter are respectively marked asWhere i=1, 2, … …, m, i denotes the number of the i-th control sub-region;
environmental parameter monitoring is carried out on the inverters of each control subarea of the target inverter through the temperature and humidity sensor, so that the environmental parameters of the inverters of each control subarea of the target inverter are obtained, wherein the environmental parameters of the target inverter comprise temperature and temperatureHumidity, the temperature and humidity of the inverter in each control subarea of the target inverter are respectively recorded asWhere j is denoted as the number of the j-th control sub-region, j=1, 2, … …, v.
Further, the specific analysis mode of the detection module to the working state of the target inverter is as follows:
current of target inverter for each control subarea of target inverter areaVoltage->Frequency->Power ofTemperature->Humidity->Substituted into formula
The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the operating state proportionality coefficient of the inverter of each control subarea in the target inverter area, wherein ∈>、/>、/>And +.>Respectively expressed as preset inverter current influence factor, voltage influence factor, frequency influence factor and power influence factor, a is expressed as natural constant,/or->、/>、/>And +.>Expressed as a preset error value allowed during operation of the inverter,/>The temperature and humidity of the inverter, respectively expressed as each control sub-area of the target inverter area;
comparing the working state proportionality coefficient of the inverter of each control subarea of the target inverter area with the preset standard working state proportionality coefficient of the inverter of each control subarea of the target inverter area, if the working state proportionality coefficient of the inverter corresponding to a certain control subarea is larger than or equal to the preset standard working state proportionality coefficient of the inverter of each control subarea of the target inverter area, the inverter corresponding to the control subarea is indicated to be in a normal working state, otherwise, the inverter corresponding to the control subarea is indicated to be in an abnormal working state.
The power density increasing module is used for analyzing the working state of the target inverter and making corresponding improvement measures.
In one possible design, the power density enhancing module calculates the heat dissipation coefficient of the target inverter by:
referring to production parameters of a target inverter through a production instruction, obtaining the surface area of the target inverter of each control subarea of the target inverter area, and recording the surface area of the target inverter of each control subarea of the target inverter area as S;
obtaining the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operation by using the temperature sensor of each control subarea of the target inverter area, and recording the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operation as the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operationEnsuring that the input power of the target inverter of each control subarea of the target inverter area is the same, and recording the temperature of the target inverter of each control subarea of the target inverter area after a period of time after the target inverter works for a period of time>Analysis->，/>Obtaining the temperature change index of the target inverter in each control subarea of the target inverter area；
Analyzing the heat dissipation coefficient of the target inverter in each control sub-area of the target inverter areaThe method comprises the steps of carrying out a first treatment on the surface of the Wherein->Risk influencing factor corresponding to preset temperature change, < ->To influence the influence factors of the target inverter in each control region of the target inverter region.
Further, the heat dissipation performance of the target inverter is improved, and the specific improvement mode is as follows:
wherein the influencing factorThe heat radiation structure comprises a heat radiation structure of a target inverter, the area of an air outlet and heat radiation materials;
counting the radiator types of the target inverters in each control subarea of the target inverter area, determining that the radiator types of the target inverters in each control subarea of the target inverter area are consistent, classifying the radiator performance of the target inverters according to the service time of the target inverters, counting the radiator performance grades of all the target inverters, comparing the radiator performance grades of the target inverters with the preset standard radiator performance grades of the target inverters, counting the target inverters with the radiator performance grades lower than the preset standard radiator performance grades of the target inverters, numbering the target inverters with the radiator performance grades lower than the preset standard radiator performance grades of the target inverters, and recording as；
Arranging staff pairsAnd replacing the radiator, and ensuring that the replaced radiator is of the same type.
And the early warning module estimates the risk rate of the target inverter according to the working state parameters and the environment parameters of the target inverter and sends early warning to the remote control module.
In one possible design, the heat dissipation of the target inverter is improved in a specific manner that:
setting the standard temperature of each control subarea in the target inverter area as by actual measurementThe standard humidity is set to->J is the j-th control sub-area, j=1, 2, … …, v, and the standard use time length and the actual use time length of the statistical target inverter are respectively recorded as R Label (C) ，R Real world The actual working power of the target inverter is obtained by detecting the line of the target inverter of each control subarea of the target inverter area>；
Analyzing risk index of target inverter in each control subarea of target inverter area
；
Wherein the method comprises the steps of、/>And->For the safety influence factors corresponding to the temperature and humidity, the using time and the power in the preset target inverter area, +.>The allowable difference value between the standard power of the preset target inverter and the actual power of the target inverter is expressed;
the risk index zeta of the target inverter in each control subarea of the target inverter area and the risk index threshold value of the target inverter in each control subarea of the preset standard target inverter area are obtainedIn contrast, if the risk index ζ of the target inverter in each control sub-region of the target inverter region is not 0 to +_>Zeta, the early warning module sends out early warning to the remote control module, wherein->Zeta is shown as the preset standard meshRisk index threshold value of target inverter in each control subarea of target inverter area +.>And the allowable difference value of the risk index zeta of the target inverter in each control subarea of the target inverter area.
The remote control module is used for receiving the early warning, and performing remote optimization control on the target inverter through intelligent management and performing fault removal.
In one possible design, the early warning module specifically includes:
the risk index zeta of the target inverter in each control subarea of the target inverter area and the risk index threshold value of the target inverter in each control subarea of the preset standard target inverter area are obtainedIn contrast, if the risk index ζ of the target inverter in each control sub-region of the target inverter region is not 0 to +_>Zeta, the early warning module sends out early warning to the remote control module, wherein->ζ is denoted as the risk index threshold value +.>And the allowable difference value of the risk index zeta of the target inverter in each control subarea of the target inverter area.
The database is used for storing the safe working state parameters of the target inverter and storing the standard working parameters used by the target inverter.
In this embodiment, the method includes dividing a target inverter region to obtain each control sub-region of the target inverter region, converting an input signal of a target inverter in each control sub-region of the target inverter region into a digital signal, detecting the digital signal to obtain a working state of the target inverter in each control sub-region of the target inverter region, performing power density promotion on the target inverter according to the working state of the target inverter in each control sub-region of the target inverter region, sending an early warning to a remote control module for the target inverter in an abnormal working state, comparing the safety data in a database by the remote control module to obtain a comparison result, and taking measures on the comparison result.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. A micro-inverter control system, comprising:
region dividing module: the method comprises the steps of dividing a target inverter region into control subareas according to the equal number, numbering each subarea, and marking the subareas as 1,2, … … and n respectively;
an input module: receiving input signals of a target inverter, including current, voltage, temperature and humidity, and control signals from a human-computer interface, and converting the input signals into digital signals;
and a detection module: detecting the received digital signals, and simultaneously monitoring and recording the working state and environmental parameters of the target inverter;
and a power density improving module: analyzing the working state of the target inverter and making corresponding improvement measures;
and the early warning module is used for: estimating the risk rate of the target inverter according to the working state parameters and the environment parameters of the target inverter, and sending an early warning to a remote control module;
and a remote control module: receiving early warning, and carrying out remote optimization control and fault removal on the target inverter through intelligent management;
database: the system is used for storing the safe working state parameters of the target inverter and storing the standard working parameters used by the target inverter;
the input signal is converted into a digital signal, and the specific conversion mode is as follows:
referring to the data of the sampler used by the target inverter, according to the preset sampling rate of the sampler data used by the target inverter, sampling the input signal by the sampler according to the preset sampling rate, discretizing the input signal in time to obtain a series of discrete sample values, numbering, and respectively recording as；
Will beCarrying out quantization processing by a quantizer, mapping into discrete numerical values, representing the discrete numerical values as corresponding ternary codes, and encoding the corresponding ternary codes into a digital signal form according to a ternary encoding mode for output;
the detection module detects the working state and the environmental parameters of the target inverter, and the specific detection mode is as follows:
laying a plurality of circuits provided with temperature and humidity sensors in each control subarea of a target inverter area, wherein the circuits provided with the temperature and humidity sensors are in one-to-one correspondence with each control subarea, one end of each circuit is positioned in each appointed monitoring subarea of the target inverter area, the circuits are marked as the circuit tail ends of each control subarea of the target inverter area, and the other ends of the circuits are positioned in a monitoring area corresponding to the target inverter and are marked as the starting ends of the circuits;
performing voltage and current test on each control subarea in the target inverter area to obtain target inverter working state parameters of each control subarea of the target inverter area, wherein the working state parameters of the target inverter comprise current, voltage, frequency and power, and the current, the voltage, the frequency and the power of the target inverter are respectively marked asWhere i=1, 2, … …, m, i denotes the number of the i-th control sub-region;
the method comprises the steps of monitoring environmental parameters of inverters of all control subareas of a target inverter through a temperature and humidity sensor to obtain the environmental parameters of the inverters of all control subareas of the target inverter, wherein the environmental parameters of the target inverter comprise temperature and humidity, and the temperature and the humidity of the inverters of all control subareas of the target inverter are respectively recorded asWhere j is represented as the number of the j-th control sub-region, j=1, 2, … …, v;
the specific analysis mode of the detection module to the working state of the target inverter is as follows:
current of target inverter for each control subarea of target inverter areaVoltage->Frequency->Power->Temperature->Humidity->Substituted into formula
The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the operating state proportionality coefficient of the inverter of each control subarea in the target inverter area, wherein ∈>、/>、/>And +.>Respectively expressed as preset inverter current influence factor, voltage influence factor, frequency influence factor and power influence factor, a is expressed as natural constant,/or->、/>、/>And +.>Expressed as a preset error value allowed during operation of the inverter,/>The temperature and humidity of the inverter, respectively expressed as each control sub-area of the target inverter area;
comparing the working state proportionality coefficient of the inverter of each control subarea of the target inverter area with the standard working state proportionality coefficient of the inverter of each control subarea of the preset target inverter area, if the working state proportionality coefficient of the inverter corresponding to a certain control subarea is larger than or equal to the standard working state proportionality coefficient of the inverter of each control subarea of the preset target inverter area, indicating that the inverter corresponding to the control subarea is in a normal working state, otherwise, indicating that the inverter corresponding to the control subarea is in an abnormal working state;
the power density improving module calculates the heat radiation performance coefficient of the target inverter in the following specific calculation modes:
referring to production parameters of a target inverter through a production instruction, obtaining the surface area of the target inverter of each control subarea of the target inverter area, and recording the surface area of the target inverter of each control subarea of the target inverter area as S;
obtaining the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operation by using the temperature sensor of each control subarea of the target inverter area, and recording the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operation as the temperature of the target inverter of each control subarea of the target inverter area before the starting of the operationEnsuring that the input power of the target inverter of each control subarea of the target inverter area is the same, and recording the temperature of the target inverter of each control subarea of the target inverter area after a period of time after the target inverter works for a period of time>Analysis->，/>Obtaining the temperature change index +/of the target inverter in each control sub-area of the target inverter area>；
Analyzing the heat dissipation coefficient of the target inverter in each control sub-area of the target inverter areaThe method comprises the steps of carrying out a first treatment on the surface of the Wherein->Risk influencing factor corresponding to preset temperature change, < ->An influence factor for influencing the target inverter in each control sub-area of the target inverter area;
the heat radiation performance of the target inverter is improved, and the specific improvement mode is as follows:
wherein the influencing factorThe heat radiation structure comprises a heat radiation structure of a target inverter, the area of an air outlet and heat radiation materials;
counting the radiator types of the target inverters in each control subarea of the target inverter area, determining that the radiator types of the target inverters in each control subarea of the target inverter area are consistent, classifying the radiator performance of the target inverters according to the service time of the target inverters, counting the radiator performance grades of all the target inverters, comparing the radiator performance grades of the target inverters with the preset standard radiator performance grades of the target inverters, counting the target inverters with the radiator performance grades lower than the preset standard radiator performance grades of the target inverters, numbering the target inverters with the radiator performance grades lower than the preset standard radiator performance grades of the target inverters, and recording as；
The staff is arranged with the number ofThe target inverter of (1) is used for replacing the radiator and ensuring that the replaced radiator is of the same type;
the early warning module is specifically used for:
setting the standard temperature of each control subarea in the target inverter area as by actual measurementThe standard humidity is set to->J is the j-th control sub-area, j=1, 2, … …, v, and the standard use time length and the actual use time length of the statistical target inverter are respectively recorded as R Label (C) ，R Real world The actual working power of the target inverter is obtained by detecting the line of the target inverter of each control subarea of the target inverter area>；
Analyzing risk index of target inverter in each control subarea of target inverter area
；
Wherein the method comprises the steps of、/>And->For the safety influence factors corresponding to the temperature and humidity, the using time and the power in the preset target inverter area, +.>The allowable difference value between the standard power of the preset target inverter and the actual power of the target inverter is expressed;
the risk index zeta of the target inverter in each control subarea of the target inverter area and the risk index threshold value of the target inverter in each control subarea of the preset standard target inverter area are obtainedComparing, if the purpose isThe risk index ζ of the target inverter in each control sub-region of the target inverter region is not 0 to +.>Zeta, the early warning module sends out early warning to the remote control module, wherein->ζ is denoted as the risk index threshold value +.>And the allowable difference value of the risk index zeta of the target inverter in each control subarea of the target inverter area.
2. The micro-inverter control system of claim 1, wherein the remote control module processes the early warning signal in the following manner:
when the early warning sent by the early warning module is received, the remote control module automatically finds out the target inverter in the abnormal working state in each control subarea of the target inverter area, sends a command to the detection module, the detection module receives the command, detects the target inverter in the abnormal working state to obtain the abnormal parameters of the target inverter in the abnormal working state, feeds the abnormal parameters of the target inverter back to the remote control module, and the remote control module compares the abnormal parameters of the target inverter with safety data in the database to obtain a comparison result, and makes a solution to the comparison result to eliminate faults.
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