CN101446615A - Solar battery management method - Google Patents
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- CN101446615A CN101446615A CNA2008102415386A CN200810241538A CN101446615A CN 101446615 A CN101446615 A CN 101446615A CN A2008102415386 A CNA2008102415386 A CN A2008102415386A CN 200810241538 A CN200810241538 A CN 200810241538A CN 101446615 A CN101446615 A CN 101446615A
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Abstract
The invention discloses a solar array management method, which comprises the following steps: detecting the open circuit voltage, the working voltage, the open circuit current, the working current and the total working current of each solar array one by one every two self-inspection periods; determining whether a fault occurs in the solar array according to the open circuit voltage, the working current, the open circuit current and the working circuit and, if so, adding one to a counter; and determining whether the number of the counter is equal to a preset value and, if so, sending alarm. The fault can be determined according to the fact that the number of the counter is equal to the preset value other than according to one result, thereby maximally reducing error determination, obviating false alarm and improving alarm accuracy.
Description
Technical field
The present invention relates to a kind of solar battery management method.
Background technology
The solar battery Managed Solution is different because of different manufacturers at present, but different shortcomings is all arranged, and only solar battery has been carried out the judgement of losing of over-voltage and over-current judgement and square formation as the solar battery management.Malfunction for other can't be discerned and handle, and causes the confusion of battery management and invalid easily.And erroneous judgement appears in existing solar battery Managed Solution easily, and can not detect real fault.
Summary of the invention
Technical matters to be solved by this invention is exactly in order to overcome above deficiency, to have proposed a kind of solar battery management method, reducing erroneous judgement.
Technical matters of the present invention is solved by following technical scheme:
A kind of solar battery management method comprises the steps: the first step: every one after the overhaul period one by one open-circuit voltage, operating voltage, open-circuit current, working current and the total working current to each road solar battery detect; Second step: judge according to described open-circuit voltage, operating voltage, open-circuit current, working current whether this road solar battery breaks down, and when being, make counter add 1; Whether the 3rd step: judging that counter counts reaches preset value, and warning when being.
Preferably, described fault comprises that working current is too small unusual, 21), judge whether total working current of solar battery satisfies Isont≤n*C the too small unusual detection method of described working current is as follows:, if enter 22), wherein Isont is total working current of solar battery, n is total way of solar battery, and C is the electric current threshold value that whether carries out the too small judgement of electric current; * represent multiplication sign: judge 22), successively whether each road square formation working current satisfies Ison_i≤B, and B is the too small judgement threshold value of working current, exist working current too small unusual if then show this road square formation; If otherwise enter 23), wherein Ison_i is the working current of i road square formation; 23), judge successively whether each road square formation working current satisfies
Exist working current too small unusual if then show this road square formation, wherein N1, N2 ... Ni ... Nn is the pole plate initial configuration number of each road square formation, and Ni is the configurable number of i road square formation; M is the too small judgement of a working current configuration threshold number, when total working current of solar battery greater than specified total current one half of the input of solar battery, m is 1, otherwise m is 2.
Described fault comprises that operating voltage is unusual, the detection method that described operating voltage is unusual is as follows: judge successively whether each road square formation operating voltage satisfies | Vson_i-Vbus|≤A, if not showing that then this road square formation operating voltage is unusual, wherein Vson_i is an i road square formation operating voltage, Vbus is a busbar voltage, and A is that the square formation operating voltage is judged threshold value unusually.
Described fault comprises that also square formation loses, described square formation lose comprise that the part square formation is lost and all square formations lose, the determination methods that described part square formation is lost is as follows: there is first state in part road square formation, and described first state continues 1-2 hour continuously; Described first state is for existing working current too small unusual, and open-circuit voltage satisfies | Voc_i-Vbus|≤D, and wherein Voc_i is an i road square formation open-circuit voltage, D is that square formation is lost open-circuit voltage and judged threshold value; The determination methods that described whole square formation is lost is as follows: the open-circuit voltage of all square formations satisfies | and total work electric current I sont of Voc_i-Vbus|≤D, solar battery is less than maximum error of measuring, and continues 48-96 hour continuously.
Described fault also comprises square formation open-circuit current abnormal failure, the detection method of described square formation open-circuit current abnormal failure is: whether the open-circuit current of judging each road square formation successively satisfies Ioc_i 〉=C, if then there is the open-circuit current abnormal failure in this road square formation, wherein Ioc_i is the open-circuit current of i road square formation, and C is that the square formation open-circuit current is judged threshold voltage unusually.
Described fault also comprises the too high fault of square formation open-circuit voltage, the detection method of the too high fault of described square formation open-circuit voltage is: whether the open-circuit voltage of judging each road square formation successively satisfies Voc_i 〉=E, if then there is the too high fault of open-circuit voltage in this road square formation, wherein Voc_i is the open-circuit voltage of i road square formation, and E judges threshold value for the square formation open-circuit voltage; Described fault comprises that also the square formation working current crosses major break down, the detection method that described square formation working current is crossed major break down is: whether the working current of judging each road square formation successively satisfies Ison_i 〉=F, wherein Ison_i is the working current of i road square formation, and F is that the overcurrent of i road square formation is judged threshold value.
In described second step, counter comprises the too small counter of working current, and when certain road square formation exists working current too small when unusual, the too small counter of described working current adds 1; The too small counter of working current judges whether numeration reaches the first counting preset value in described the 3rd step, and reports to the police when being.
In described second step, counter comprises operating voltage anomalous counts device, and when certain road square formation existed operating voltage unusual, operating voltage anomalous counts device added 1; Operating voltage judges unusually whether numeration reaches the first counting preset value in described the 3rd step, and reports to the police when being.
In described second step, counter comprises open-circuit current anomalous counts device, and when certain road square formation existed open-circuit current unusual, open-circuit current anomalous counts device added 1; Open-circuit current judges unusually whether numeration reaches the first counting preset value in described the 3rd step, reports to the police when being and reduces the even charging voltage of this road square formation or all do not fill.
Counter comprises the too high failure counter of open-circuit voltage in described second step, and when certain road square formation existed open-circuit voltage too high, the too high failure counter of described open-circuit voltage added 1, and with the switching tube conducting of corresponding square formation; The too high failure counter of open-circuit voltage judges whether numeration reaches the second counting preset value in described the 3rd step, and reports to the police when being; Counter comprises the excessive failure counter of working current in described second step, and when certain road square formation existed working current excessive, the excessive failure counter of described working current added 1, and the switching tube of corresponding square formation is disconnected; The excessive failure counter of working current judges whether numeration reaches the second counting preset value in described the 3rd step, and reports to the police when being.
The beneficial effect that the present invention is compared with the prior art is:
We do not carry out with result once solar battery management method of the present invention for failure judgment, but have just judged fault when reaching the counting preset value, reduce erroneous judgement to greatest extent, avoid false alarm, improve the warning accuracy.
Description of drawings
Fig. 1 is the schematic flow sheet of the solar battery management method of the specific embodiment of the invention.
Embodiment
Also in conjunction with the accompanying drawings the present invention is described in further details below by concrete embodiment.
As shown in Figure 1, a kind of solar battery management method comprises the steps:
The first step: every one after the overhaul period one by one open-circuit voltage, operating voltage, open-circuit current, working current and the total working current to each road solar battery detect.
We adopt the solar battery timer-controlled self-inspection, can be from the overhaul period according to sunlight state, automatic adjusting on daytime with the different of night, adopt self check in about 10 minutes once during daytime, when evening or sunlight are very weak then half an hour ~ one hour just self check is once, can both fault can be in time detected like this, the loss of the solar energy utilization ratio that causes because of self check can be reduced again to greatest extent.
During self check, the state that every road square formation all has an independent conducting, disconnects separately, an all-pass and complete disconnected state are arranged again between all square formations simultaneously, the maximum rising edge time that each square formation switching time is according to the square formation input or switching tube is opened or turn-offed when withdrawing from during self check, maximum negative edge time, the sampling period that is produced by the program run cycle decide, and guarantee that each self check state can both correctly sample the square formation voltage and the square formation electric current of state at that time.Promptly switch duration and be according to two maximum sampling periods and add that maximum rising edge time of switching tube and maximum negative edge time decide, duration just can obtain the best switching duration than above-mentioned three time sums bigger (adding a little allowance).Separately conducting, disconnection separately, all-pass, complete disconnected be not all to need to measuring amount, but the checking that may complement each other prevents that unitary sampling from makeing mistakes.
Working current, operating voltage when the sample that self check detects comprises each square formation and works independently, open-circuit voltage and open-circuit current when each square formation disconnects, the total work electric current during the whole conducting of all square formations, the total current when all square formations all disconnect.We just can carry out the duty of square formation is comprehensively monitored according to top these several amounts:
Second step: judge according to described open-circuit voltage, operating voltage, open-circuit current, working current whether this road solar battery breaks down, and when being, make counter add 1.
Whether the 3rd step: judging that counter counts reaches preset value, and warning when being.
Fault in above-mentioned second step comprises following several.
The too high fault of square formation open-circuit voltage:
Fault in described second step comprises the too high fault of square formation open-circuit voltage.It is judged by the open-circuit voltage of the every road of direct detection square formation.
The detection method of the too high fault of described square formation open-circuit voltage is: whether the open-circuit voltage of judging each road square formation successively satisfies Voc_i 〉=E, if then there is the too high fault of open-circuit voltage in this road square formation, wherein Voc_i is the open-circuit voltage of i road square formation, and E judges threshold value for the square formation open-circuit voltage.Its open-circuit has surpassed the ceiling voltage upper limit E of this road square formation configuration when a certain road square formation disconnects, and shows that there is the too high fault of open-circuit voltage in this road square formation.This illustrates that there is too much phenomenon in this road square formation solar panel on serial number, or this road square formation may have been introduced an incorrect input source from other place.Cause the switching tube overvoltage to damage easily.
Counter comprises the too high failure counter of open-circuit voltage in described second step, and when certain road square formation existed open-circuit voltage too high, the too high failure counter of described open-circuit voltage added 1, and with the switching tube conducting of corresponding square formation.Voltage can be dragged down like this, prevent from that switching tube both end voltage difference is too high switching tube is punctured.The too high failure counter of open-circuit voltage judges whether numeration reaches the second counting preset value in described the 3rd step, and reports to the police when being.
The square formation working current is crossed major break down:
Fault in described second step comprises that the square formation working current crosses major break down, and it is to judge according to the working current of every road square formation reality.
The detection method that described square formation working current is crossed major break down is: whether the working current of judging each road square formation successively satisfies Ison_i 〉=F, and wherein Ison_i is the working current of i road square formation, and F is that the overcurrent of i road square formation is judged threshold value.When its working current has surpassed the maximum current upper limit F of this road square formation configuration when a certain road square formation is worked, illustrate that there is too much phenomenon in this road square formation solar panel on incidence number, or this road square formation may have been introduced an incorrect input source from other place.Cause the switching tube overload to damage easily.
Counter comprises the excessive failure counter of working current in described second step, and when certain road square formation existed working current excessive, the excessive failure counter of described working current added 1, and the switching tube of corresponding square formation is disconnected.Can prevent that like this electric current from crossing senior general's switching tube and damaging.The excessive failure counter of working current judges whether numeration reaches the second counting preset value in described the 3rd step, and reports to the police when being.
For the different faults counting is different, excessive for square formation overtension and square formation working current, owing to judge that threshold value is higher, interference or measuring error are little to their influences, and failure count just can be accused fault 1 ~ 2 time.Promptly the second counting preset value is 1 ~ 2 time.More than two kinds of faults just can carry out corresponding square formation control strategy processing, for example switching tube conducting or the disconnection of corresponding square formation when unusual earlier detecting for the first time.
Square formation operating voltage abnormal failure:
Fault in described second step comprises the operating voltage abnormal failure, and it is that the operating voltage when in running order is judged according to every road square formation.
The detection method that described operating voltage is unusual is as follows: judge successively whether each road square formation operating voltage satisfies | Vson_i-Vbus|≤A, if not showing that then this road square formation operating voltage is unusual, wherein Vson_i is an i road square formation operating voltage, Vbus is a busbar voltage, and A is that the square formation operating voltage is judged threshold value unusually.For reducing erroneous judgement, do not fail to judge again simultaneously, we select A=1 ~ 2V.Its operating voltage is higher than busbar voltage 1 ~ 2V when above when this road square formation switching tube is in conducting state, illustrating that this road square formation charge circuit is in up-set condition, may be that the charge circuit that switching tube opens circuit, drive signal disconnected or other failure cause causes is obstructed.Can carry out corresponding fault judgement and maintenance according to this alarm.
In described second step, counter comprises operating voltage anomalous counts device, and when certain road square formation existed operating voltage unusual, operating voltage anomalous counts device added 1.Operating voltage judges unusually whether numeration reaches the first counting preset value in described the 3rd step, and reports to the police when being.
The too small abnormal failure of working current:
Fault in described second step comprises that working current is too small unusual, and it is that real work electric current during according to the independent conducting of every road square formation is judged.
21), judge whether total working current of solar battery satisfies Isont≤n*C the too small unusual detection method of described working current is as follows:, if enter 22), wherein Isont is total working current of solar battery, n is total way of solar battery, and C is the electric current threshold value that whether carries out the too small judgement of electric current; * represent multiplication sign; 22) judge, successively whether each road square formation working current satisfies Ison i≤B, and B is the too small judgement threshold value of working current, exist working current too small unusual if then show this road square formation; If otherwise enter 23), wherein Ison_i is the working current of i road square formation; 23), judge successively whether each road square formation working current satisfies
Exist working current too small unusual if then show this road square formation, wherein N1, N2 ... Ni ... Nn is the pole plate initial configuration number of each road square formation, and Ni is the configurable number of i road square formation; M is the too small judgement of a working current configuration threshold number, when total working current of solar battery greater than specified total current one half of the input of solar battery, m is 1, otherwise m is 2.
In described second step, counter comprises the too small counter of working current, and when certain road square formation exists working current too small when unusual, the too small counter of described working current adds 1.The too small counter of working current judges whether numeration reaches the first counting preset value in described the 3rd step, and reports to the police when being.
The real work electric current of every road square formation is that the maximum short circuit current, illumination condition at that time, temperature of the number in parallel of the solar module that disposed with they this roads and each cell panel etc. determines.It will physical condition such as compare according to working current, each road square formation solar module parallel connection of other road square formation and judge, when its measured value than prevailing condition under estimated value when differing too big, illustrate this road square formation have the part solar module impaired or lose, there are up-set conditions such as fault in charge circuit.The too small judging point of working current should be greater than square formation current detecting maximum error, simultaneously should be less than the minimum value (reducing erroneous judgement) of this road square formation actual capabilities output under the prevailing condition.
Too small when unusual when the square formation working current occurring, illustrate that this road square formation exists that charge circuit is disconnected, the input sky is opened jumping, square formation partial loss or all lost fault.The open-circuit current abnormal factors to be taken into account when the square formation working current is too small, when existing open-circuit current unusual, may cause the too small judgement of square formation working current not go out, so will take into account producing the unusual square formation electric current of open-circuit current, unless every road square formation has the current sensing means of oneself.The square formation working current is too small also will be judged in conjunction with the initial proportioning of square formation pole plate (solar panel), initial proportioning is little, the electric current of failure judgement is corresponding also can be reduced, also will consider the influence of measuring least error simultaneously, whether its decision gate limit value is consistent with the initial proportioning of working current of every road square formation pole plate according to the working current of every road square formation when the inferior self check.Because sun power pole plate operating characteristic approximate current source during the work of break-make type controller for solar, when illumination condition was consistent, single pole plate output current was also approximate the same.When multiply by the square formation way less than 2A, total square formation working current (select for use 2A to be because current measurement errors is 1A usually, do not fail to judge again simultaneously for guaranteeing not judge by accident as far as possible, in the value of selecting for use should can be included in normal fault again greater than maximum error of measuring simultaneously substantially), then do not carry out the too small unusual judgement of working current, when total working current multiply by the square formation way greater than 2A, as certain road square formation electric current during less than 1A (or maximum current measurement error value), think that then this road square formation electric current is too small, the corresponding failure counter adds 1; (illustrate: generally when being listed as above current value greater than 1A (or maximum current measurement error value) but less than pole plate group of the initial proportioning of square formation pole plate as certain road square formation electric current, the pole plate array of every road square formation is that the pole plate group row of model of the same race are formed in parallel, and the electric current of each group pole plate group row is approximately equalised.) we think that this road square formation working current is too small, the corresponding failure counter adds 1, this fault exists some pole plate damage or stolen situation in certain road square formation usually, as ought always having four tunnel square formations, every road square formation pole plate group row proportioning is 3:3: 3: 2, every road square formation electric current of correspondence is 9: 3: 9 when certain self check: in the time of 6, this moment, the electric current of each pole plate group row was 9/3=3A (actual is to average by each pole plate group row electric current of each road square formation), because the electric current of the second tunnel square formation, thinks then that the second tunnel square formation electric current is too small unusual less than the electric current of two pole plate group row of pole plate proportioning.
The open-circuit current abnormal failure:
Fault in described second step comprises the open-circuit current abnormal failure, and it is that its actual charge circuit electric current is judged during according to this road square formation open circuit.
The detection method of described square formation open-circuit current abnormal failure is: whether the open-circuit current of judging each road square formation successively satisfies Ioc_i 〉=C, if then there is the open-circuit current abnormal failure in this road square formation, wherein Ioc_i is the open-circuit current of i road square formation, and C is that the square formation open-circuit current is judged threshold voltage unusually.
In described second step, counter comprises open-circuit current anomalous counts device, and when certain road square formation existed open-circuit current unusual, open-circuit current anomalous counts device added 1.Open-circuit current anomalous counts device judges whether numeration reaches the first counting preset value in described the 3rd step, reports to the police when being and reduces the even charging voltage of this road square formation or all do not fill.
Under the normal condition, the open-circuit current of square formation should be zero, and its Rule of judgment should be the measuring error upper limit that is greater than the square formation electric current.As when current measurement errors is 1A, Rule of judgment should be greater than 1A.There is part group (or road) switching tube to have short circuit or drive signal hardover failure in all square formation groups (road) of open-circuit current declaration of exception.According to square formation configuration when the value of each road open-circuit current can determine the square formation road of breaking down, and take corresponding square formation control strategy, may cause accumulator super-charge danger when preventing this fault of long-term existence, as stop all to fill or the even charging voltage upper lower limit value of system being turned down, the value of turning down is associated with way that breaks down and current value, the way that breaks down is many more or electric current is big more, and the value of turning down is also many more or directly exempt from all to fill, till trouble shooting.
The counting unusual for the square formation operating voltage, that the square formation working current is too small and the square formation working current is unusual since solar illuminating amount, temperature, busbar voltage etc. change, criterion is dynamic, comprehensively judge according to the electric current and voltage state of each road square formation at that time, total square formation input current, the situations such as square formation electric current when all disconnecting, erroneous judgement so just appears easily, so counts is corresponding will get some morely, but can increase the workload of compute chip such as CPU or DSP too much.Constantly be cleared owing to the continuous variation of illumination condition in the real work and make tale can't reach requirement, when alarm takes place and can't produce alarm.Our comprehensive various actual conditions, through finding after the test of many times: when when the overhaul period is 5 ~ 10 minutes, the first counting preset value is got 4 ~ 10 times, and cycle length is long more, and the first counting preset value just reduces.
Square formation is lost fault:
Fault in described second step comprises that also square formation loses, and square formation is lost and carried out according to square formation open-circuit voltage, square formation working current binding time Rule of judgment simultaneously.Described square formation is lost and is comprised that the part square formation is lost and whole square formation is lost.
The determination methods that described part square formation is lost is as follows: there is first state in part road square formation, and described first state continues 1-2 hour continuously; Described first state is for existing working current too small unusual, and open-circuit voltage satisfies | Voc_i-Vbus|≤D,, wherein Voc_i is an i road square formation open-circuit voltage, D is that square formation is lost open-circuit voltage and judged threshold value.The determination methods that described whole square formation is lost is as follows: the open-circuit voltage of all square formations satisfies | and total work electric current I sont of Voc_i-Vbus|≤D, solar battery is less than maximum error of measuring, and continues 48-96 hour continuously.Total work electric current I sont of solar battery should be zero when all square formation was lost in theory, but because the existence of measuring error, we get final product total work electric current I sont that Rule of judgment is defined as solar battery less than maximum error of measuring.
Lose when being meant part square formation open-circuit voltage or square formation working current normal range of operation for the part square formation, and in addition part square formation open-circuit voltage and busbar voltage difference absolute value 1 ~ 2V with interior (selecting for use 1 ~ 2V to prevent that the measuring error while from can accurately distinguish square formation minimum open circuit voltage and maximum busbar voltage difference) in, there is the too small abnormal failure of square formation working current in they simultaneously, these two kinds of exception condition duration very long (as above 1 hour) of while, think that then the unusual square formation of this part appearance satisfies the part square formation and loses Rule of judgment, accuse corresponding road square formation and lose.When square formation open-circuit voltage and busbar voltage difference absolute value do not have (less than the maximum error of measuring electric current) at 1 ~ 2V with interior while square formation working current simultaneously this condition duration very long (as surpassing two ~ four days, most of accumulator BACKUP TIME) think that then square formation all loses.
Square formation is lost mainly and is carried out timing with the time that reaches loss condition, partial loss was judged by full 1 ~ 2 hour of continuous integration time, because of this is great alarm, get full 1 ~ 2 hour of continuous integration time and judge that can accusing the while of being out of order as early as possible is not prone to erroneous judgement again, because voltage and electric current have all carried out repeatedly self check in 1 ~ 2 hour, probability of errors is minimum simultaneously.All lose then is to judge with full 2 ~ 4 days of continuous integration time, as long as because there is light (low light level was also arranged during the cloudy day) solar battery open-circuit voltage also can surpass busbar voltage, it also is 2 ~ 4 days that most of solar energy system of while is joined the accumulator charging time, if greatly mist or polar night weather, sent square formation in 2 ~ 4 days and lose alarm and can remind the user to enable standby power supply (as oily machine etc.).
Order for fault judgement does not have sequencing, and the user can freely select.
We do not carry out with result once solar battery management method of the present invention for failure judgment, but repeatedly judge according to the significance level of fault, reduce erroneous judgement to greatest extent, avoid false alarm, improve the warning accuracy.Simultaneously we carry out the policy control scheme of different modes according to the different faults state of square formation, to guarantee to utilize to greatest extent sun power, can in time detect and report fault again simultaneously.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a solar battery management method is characterized in that comprising the steps:
The first step: every one after the overhaul period one by one open-circuit voltage, operating voltage, open-circuit current, working current and the total working current to each road solar battery detect;
Second step: judge according to described open-circuit voltage, operating voltage, open-circuit current, working current whether this road solar battery breaks down, and when being, make counter add 1;
Whether the 3rd step: judging that counter counts reaches preset value, and warning when being.
2. solar battery management method according to claim 1 is characterized in that: described fault comprises that working current is too small unusual, and the too small unusual detection method of described working current is as follows:
21) whether total working current of judging solar battery satisfies Isont≤n*C, if enter 22), wherein Isont is total working current of solar battery, and n is total way of solar battery, and C is the electric current threshold value that whether carries out the too small judgement of electric current; * represent multiplication sign:
22) judge successively whether each road square formation working current satisfies Ison_i≤B, and B is the too small judgement threshold value of working current, exist working current too small unusual if then show this road square formation; If otherwise enter 23), wherein Ison_i is the working current of i road square formation;
23) judge successively whether each road square formation working current satisfies
Exist working current too small unusual if then show this road square formation, wherein N1, N2 ... Ni ... Nn is the pole plate initial configuration number of each road square formation, and Ni is the configurable number of i road square formation; M is the too small judgement of a working current configuration threshold number, when total working current of solar battery greater than specified total current one half of the input of solar battery, m is 1, otherwise m is 2.
3. solar battery management method according to claim 2, it is characterized in that: described fault comprises that operating voltage is unusual, the detection method that described operating voltage is unusual is as follows: judge successively whether each road square formation operating voltage satisfies | Vson_i-Vbus|≤A, if not showing that then this road square formation operating voltage is unusual, wherein Vson_i is an i road square formation operating voltage, Vbus is a busbar voltage, and A is that the square formation operating voltage is judged threshold value unusually.
4. solar battery management method according to claim 3 is characterized in that: described fault comprises that also square formation loses, described square formation lose comprise that the part square formation is lost and all square formations lose,
The determination methods that described part square formation is lost is as follows: there is first state in part road square formation, and described first state continues 1-2 hour continuously; Described first state is for existing working current too small unusual, and open-circuit voltage satisfies | Voc_i-Vbus|≤D, and wherein Voc_i is an i road square formation open-circuit voltage, D is that square formation is lost open-circuit voltage and judged threshold value;
The determination methods that described whole square formation is lost is as follows: the open-circuit voltage of all square formations satisfies | and total work electric current I sont of Voc_i-Vbus|≤D, solar battery is less than maximum error of measuring, and continues 48-96 hour continuously.
5. solar battery management method according to claim 4, it is characterized in that: described fault also comprises square formation open-circuit current abnormal failure, the detection method of described square formation open-circuit current abnormal failure is: whether the open-circuit current of judging each road square formation successively satisfies Ioc_i 〉=C, if then there is the open-circuit current abnormal failure in this road square formation, wherein Ioc_i is the open-circuit current of i road square formation, and C is that the square formation open-circuit current is judged threshold voltage unusually.
6. solar battery management method according to claim 5, it is characterized in that: described fault also comprises the too high fault of square formation open-circuit voltage, the detection method of the too high fault of described square formation open-circuit voltage is: whether the open-circuit voltage of judging each road square formation successively satisfies Voc_i 〉=E, if then there is the too high fault of open-circuit voltage in this road square formation, wherein Voc_i is the open-circuit voltage of i road square formation, and E judges threshold value for the square formation open-circuit voltage;
Described fault comprises that also the square formation working current crosses major break down, the detection method that described square formation working current is crossed major break down is: whether the working current of judging each road square formation successively satisfies Ison_i 〉=F, wherein Ison_i is the working current of i road square formation, and F is that the overcurrent of i road square formation is judged threshold value.
7. solar battery management method according to claim 2 is characterized in that: in described second step, counter comprises the too small counter of working current, and when certain road square formation exists working current too small when unusual, the too small counter of described working current adds 1; The too small counter of working current judges whether numeration reaches the first counting preset value in described the 3rd step, and reports to the police when being.
8. solar battery management method according to claim 3 is characterized in that: in described second step, counter comprises operating voltage anomalous counts device, and when certain road square formation existed operating voltage unusual, operating voltage anomalous counts device added 1; Operating voltage judges unusually whether numeration reaches the first counting preset value in described the 3rd step, and reports to the police when being.
9. solar battery management method according to claim 5 is characterized in that: in described second step, counter comprises open-circuit current anomalous counts device, and when certain road square formation existed open-circuit current unusual, open-circuit current anomalous counts device added 1; Open-circuit current judges unusually whether numeration reaches the first counting preset value in described the 3rd step, reports to the police when being and reduces the even charging voltage of this road square formation or all do not fill.
10. solar battery management method according to claim 6 is characterized in that:
Counter comprises the too high failure counter of open-circuit voltage in described second step, and when certain road square formation existed open-circuit voltage too high, the too high failure counter of described open-circuit voltage added 1, and with the switching tube conducting of corresponding square formation; The too high failure counter of open-circuit voltage judges whether numeration reaches the second counting preset value in described the 3rd step, and reports to the police when being;
Counter comprises the excessive failure counter of working current in described second step, and when certain road square formation existed working current excessive, the excessive failure counter of described working current added 1, and the switching tube of corresponding square formation is disconnected; The excessive failure counter of working current judges whether numeration reaches the second counting preset value in described the 3rd step, and reports to the police when being.
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| CN2008102415386A CN101446615B (en) | 2008-12-19 | 2008-12-19 | Solar battery management method |
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| CN101446615A true CN101446615A (en) | 2009-06-03 |
| CN101446615B CN101446615B (en) | 2012-03-07 |
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| CN2008102415386A Expired - Fee Related CN101446615B (en) | 2008-12-19 | 2008-12-19 | Solar battery management method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102508123A (en) * | 2011-09-29 | 2012-06-20 | 广州松下空调器有限公司 | Detection method of abnormal discharge of negative ion generator |
| CN103140765A (en) * | 2010-10-07 | 2013-06-05 | 东芝三菱电机产业***株式会社 | Failure detecting apparatus |
| CN104950199A (en) * | 2015-05-28 | 2015-09-30 | 江苏固德威电源科技有限公司 | Multipath PV input mode recognition method |
| CN112596490A (en) * | 2020-02-28 | 2021-04-02 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Industrial robot fault detection method and device, computer equipment and storage medium |
| CN113554224A (en) * | 2021-07-20 | 2021-10-26 | 上海航天测控通信研究所 | Fault diagnosis method and system combining multipoint statistics with health trend prediction |
| CN113834979A (en) * | 2020-06-24 | 2021-12-24 | 新唐科技股份有限公司 | Processing circuit and processing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2874156B2 (en) * | 1994-04-13 | 1999-03-24 | キヤノン株式会社 | Power generation system |
| JP4556677B2 (en) * | 2005-01-18 | 2010-10-06 | オムロン株式会社 | Power conditioner with built-in curve tracer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103140765A (en) * | 2010-10-07 | 2013-06-05 | 东芝三菱电机产业***株式会社 | Failure detecting apparatus |
| US9153953B2 (en) | 2010-10-07 | 2015-10-06 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Fault detection apparatus |
| CN102508123A (en) * | 2011-09-29 | 2012-06-20 | 广州松下空调器有限公司 | Detection method of abnormal discharge of negative ion generator |
| CN102508123B (en) * | 2011-09-29 | 2014-04-16 | 广州松下空调器有限公司 | Detection method of abnormal discharge of negative ion generator |
| CN104950199A (en) * | 2015-05-28 | 2015-09-30 | 江苏固德威电源科技有限公司 | Multipath PV input mode recognition method |
| CN112596490A (en) * | 2020-02-28 | 2021-04-02 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Industrial robot fault detection method and device, computer equipment and storage medium |
| CN112596490B (en) * | 2020-02-28 | 2021-09-07 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Industrial robot fault detection method and device, computer equipment and storage medium |
| CN113834979A (en) * | 2020-06-24 | 2021-12-24 | 新唐科技股份有限公司 | Processing circuit and processing method |
| CN113834979B (en) * | 2020-06-24 | 2023-12-15 | 新唐科技股份有限公司 | Processing circuit and processing method |
| CN113554224A (en) * | 2021-07-20 | 2021-10-26 | 上海航天测控通信研究所 | Fault diagnosis method and system combining multipoint statistics with health trend prediction |
| CN113554224B (en) * | 2021-07-20 | 2022-11-25 | 上海航天测控通信研究所 | Fault diagnosis method and system combining multipoint statistics with health trend prediction |
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