CN105139104A - System and method for operating data analysis of component in photovoltaic power station - Google Patents
System and method for operating data analysis of component in photovoltaic power station Download PDFInfo
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Abstract
The present invention relates to a system and a method for operating data analysis of a component in a photovoltaic power station, and belongs to the field of power systems. The system comprises: an environmental collector, used for periodically collecting irradiance information at the photovoltaic power station; a communication server, used for sending the irradiance information that is collected by the environmental collector to a data processing server; a data processing server, used for analyzing the irradiance information to determine a weather condition under which the photovoltaic power station operates; and a display terminal, used for displaying an analysis result of the data processing server. The system further comprises a generated power collector, used for periodically collecting generated power information of the photovoltaic power station. With adoption of the structure, the system and the method for operating data analysis of the component in the photovoltaic power station extract good data in a sunny day. During the power station operating days in coincidence with the good data in the sunny day, interference factors that affect component operation, comprising weather, manual maintenance and equipment failure, can be eliminated.
Description
Technical field
The present invention relates to field of power, particularly relate to photovoltaic plant, specifically refer to a kind of system and method for photovoltaic plant inner assembly Operational Data Analysis.
Background technology
Photovoltaic plant is made up of equipment such as Source of Gateway Meter, boosting change, inverter, header box, group string and photovoltaic cell components, and wherein photovoltaic cell component is formed by several monomer solar cell package, is the least unit of composition photovoltaic plant.Photovoltaic cell component, as part most important in solar power system, is responsible for effect sun power being converted to electric energy.
When the assembly in photovoltaic plant goes out the problems such as elder generation is aging, in standing, monitoring cannot monitor the attenuation of assembly and analyze, cause that the conversion ratio of assembly reduces, output power reduces, if do not processed timely problem component, the generated energy of photovoltaic plant can be directly caused to reduce, cause owner investment to return this cycle stretch-out.
But the ruuning situation of assembly is comparatively large by the impact of weather, comprises the factor such as intensity of illumination, cloud cover and all can cause larger fluctuation to the ruuning situation of assembly; Meanwhile, stand in maintenance or equipment failure also can have an impact to the working condition of photovoltaic module.Therefore, how these weather conditions, artifact and factor of equipment failure to be got rid of, and then monitor the ruuning situation of photovoltaic module and analyze, be a great problem faced in photovoltaic plant.
At present the monitoring of most of photovoltaic plant can only be accurate on the group string under header box on the market, and cannot monitor the service condition of assembly and analyze.Although some intelligent photovoltaic components can be monitored single component, its cost is too high, for most domestic photovoltaic plant without actual application value.
Summary of the invention
The object of the invention is the shortcoming overcoming above-mentioned prior art, provide a kind of system and method for photovoltaic plant inner assembly Operational Data Analysis that can extract fine day good data, run in a few days, can get rid of the disturbing factor affecting assembly operating in the power station meeting fine day good data.
To achieve these goals, the system and method for photovoltaic plant inner assembly Operational Data Analysis of the present invention has following formation:
This is used for the system of photovoltaic plant inner assembly Operational Data Analysis, and its principal feature is, described system comprises:
Environment collector, in order to periodically to gather the irradiance information at photovoltaic plant place;
The communication server, in order to be sent to data processing server by the irradiance information of described environment collector collection;
Data processing server, in order to analyze described irradiance information to judge the weather condition that described photovoltaic plant runs;
Display terminal, in order to show the analysis result of described data processing server.
Further, described system also comprises:
Generated output collector, in order to periodically to gather the generated output information of photovoltaic plant.
Further, described data processing server comprises:
Fine day judge module, the weather condition run in order to the photovoltaic plant described in judging according to described irradiance information;
Whether maintenance judge module, exist maintenance situation or equipment failure situation in order to the photovoltaic plant described in judging according to described irradiance information and described generated output information.
Again further, described data processing server also comprises:
Decay judge module, in order to the assembly operating index a of the photovoltaic plant according to following formulae discovery, and the attenuation of photovoltaic plant inner assembly described in judging according to described assembly operating index:
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers.
The invention still further relates to a kind of method of photovoltaic plant inner assembly Operational Data Analysis, its principal feature is, described method comprises the following steps:
(1) the environment collector described in periodically gathers the irradiance information at described photovoltaic plant place;
(2) described irradiance information is sent to described data processing server by the communication server described in;
(3) the irradiance information described in data processing server analysis described in, and analysis result is sent to described display terminal;
(4) analysis result of the data processing server described in display terminal display described in.
Further, described step (3) is specially:
(3.a.1) the maximum irradiance information of photovoltaic plant in one day described in the data server described in obtains;
(3.a.2) data server described in judge before and after described maximum irradiance information whether Δ t exists when being more than or equal to described maximum irradiance information;
If when (3.a.3) before and after described maximum irradiance information, the existence of Δ t is more than or equal to described maximum irradiance information, then the photovoltaic plant described in exporting to described display terminal works in the result of non-fine day; Then step (3.a.5) is continued;
If (3.a.4) before and after described maximum irradiance information, Δ t does not exist when being more than or equal to described maximum irradiance information, then the photovoltaic plant described in exporting to described display terminal works in the result of fine day; Then step (3.a.5) is continued;
(3.a.5) data server described in draws the irradiance information curve of this day, and is sent to described display terminal, and the horizontal ordinate of described irradiance information curve is time point, and ordinate is irradiance information.
Further, described system also comprises generated output collector, further comprising the steps of in described step (1):
Described generated output collector periodically gathers the generated output information of photovoltaic plant.
Again further, described data processing server comprises maintenance judge module, whether there is maintenance situation or equipment failure situation in order to the photovoltaic plant described in judging according to described irradiance information and described generated output information; Further comprising the steps of after described step (3.a.5):
(3.b.1) whether the generated output information described in data server described in judges is along with time variations is consistent with the variation tendency of described irradiance information;
If (3.b.2) described generated output information along with time variations consistent with the variation tendency of described irradiance information, there is not maintenance situation and there is not the situation of equipment failure in the photovoltaic plant described in then described data server sends to described display terminal, then continues step (3.b.5);
If (3.b.3) described generated output information along with the variation tendency of time variations and described irradiance information inconsistent, there is the situation of maintenance situation or equipment failure in the photovoltaic plant described in then described data server sends to described display terminal, then continues step (3.b.5);
(3.b.5) data server described in draws generated output information histogram in described irradiance information curve, and the horizontal ordinate of described histogram is time point, and ordinate is generated output information.
Again further, described data processing server also comprises: decay judge module, further comprising the steps of after described step (3.b.5):
(3.c.1) the assembly operating index a of the photovoltaic plant of decay judge module according to following formulae discovery described in;
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers;
(3.c.2) attenuation of the photovoltaic plant inner assembly described in the data server described in judges according to described operating index, and this attenuation is sent to described display terminal.
Again further, further comprising the steps of after described step (3.c.2):
(3.c.3) whether the operating index described in the data server described in judges reaches threshold value;
If (3.c.4) described operating index reaches threshold value, then described display terminal prompting user needs to repair or replace described photovoltaic plant inner assembly;
If (3.c.5) described operating index does not reach threshold value, then continue step (3.c.3).
Have employed the system and method for photovoltaic plant inner assembly Operational Data Analysis in this invention, compared with prior art, there is following beneficial effect:
(1) impact of weather condition on assembly generating trend is excluded;
(2) exclude due to manually maintenance or equipment failure, on the impact of assembly generating trend;
(3) the assembly operating index by proposing, is quantified as concrete numerical value by the operation conditions of assembly, to monitor the operation conditions of assembly and to analyze;
(4) do not need extra hardware spending, as intelligent assembly etc., save power plant construction and O&M cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the system for photovoltaic plant inner assembly Operational Data Analysis of the present invention.
Irradiance information curve map when Fig. 2 is fine day of the present invention.
Fig. 3 is fine day of the present invention and without irradiance information curve map when maintenance situation and equipment failure situation and generated output information histogram.
Embodiment
In order to more clearly describe technology contents of the present invention, conduct further description below in conjunction with specific embodiment.
System and method for photovoltaic plant inner assembly Operational Data Analysis of the present invention, solves following technical matters:
Propose and realize a kind of new method, extracting fine day good data; Run in a few days in the power station meeting fine day good data, the disturbing factor affecting assembly operating can be got rid of, comprise weather, artificial maintenance and equipment failure;
On the basis of fine day good data, propose a kind of new assembly operating index, for the ruuning situation of photovoltaic cell component in monitor optical overhead utility, and analyze the aging conditions of departures inner assembly;
Refer to shown in Fig. 1, this system being used for photovoltaic plant inner assembly Operational Data Analysis comprises:
Environment collector, in order to periodically to gather the irradiance information at photovoltaic plant place;
The communication server, in order to be sent to data processing server by the irradiance information of described environment collector collection;
Data processing server, in order to analyze described irradiance information to judge the weather condition that described photovoltaic plant runs;
Display terminal, in order to show the analysis result of described data processing server.
In a preferred embodiment, described system also comprises:
Generated output collector, in order to periodically to gather the generated output information of photovoltaic plant.
In a preferred embodiment, described data processing server comprises:
Fine day judge module, the weather condition run in order to the photovoltaic plant described in judging according to described irradiance information;
Whether maintenance judge module, exist maintenance situation or equipment failure situation in order to the photovoltaic plant described in judging according to described irradiance information and described generated output information.
In a preferred embodiment, described data processing server also comprises:
Decay judge module, in order to the assembly operating index a of the photovoltaic plant according to following formulae discovery, and the attenuation of photovoltaic plant inner assembly described in judging according to described assembly operating index:
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers.
The invention still further relates to a kind of method of photovoltaic plant inner assembly Operational Data Analysis, described method comprises the following steps:
(1) the environment collector described in periodically gathers the irradiance information at described photovoltaic plant place;
(2) described irradiance information is sent to described data processing server by the communication server described in;
(3) the irradiance information described in data processing server analysis described in, and analysis result is sent to described display terminal;
(4) analysis result of the data processing server described in display terminal display described in.
In a preferred embodiment, described step (3) is specially:
(3.a.1) the maximum irradiance information of photovoltaic plant in one day described in the data server described in obtains;
(3.a.2) data server described in judge before and after described maximum irradiance information whether Δ t exists when being more than or equal to described maximum irradiance information;
If when (3.a.3) before and after described maximum irradiance information, the existence of Δ t is more than or equal to described maximum irradiance information, then the photovoltaic plant described in exporting to described display terminal works in the result of non-fine day; Then step (3.a.5) is continued;
If (3.a.4) before and after described maximum irradiance information, Δ t does not exist when being more than or equal to described maximum irradiance information, then the photovoltaic plant described in exporting to described display terminal works in the result of fine day; Then step (3.a.5) is continued;
(3.a.5) data server described in draws the irradiance information curve of this day, and is sent to described display terminal, and the horizontal ordinate of described irradiance information curve is time point, and ordinate is irradiance information.
In a preferred embodiment, refer to shown in Fig. 2, system judges the algorithm of fine day and realizes as follows:
A the every 5min of () environment collector gathers a terrestrial solar radiation degree, and deliver to data processing server by data; In the irradiance value of every day, certain exist a maximal value (Max);
B (), before the irradiance Max value moment, the irradiation value of t-Δ t, is necessarily less than the irradiation value of t;
C (), after the irradiance Max value moment, the irradiation value of t+ Δ t, is necessarily less than the irradiation value of t.
Satisfy condition (a), (b), (c) irradiation value curve by after data server process, display terminal shows as shown in Figure 2.Fig. 2 represents that the operation weather on power station same day is fine day, and wherein para-curve is drawn by the irradiation value gathered at every turn and formed.
In a preferred embodiment, described system also comprises generated output collector, further comprising the steps of in described step (1):
Described generated output collector periodically gathers the generated output information of photovoltaic plant.
In a preferred embodiment, described data processing server comprises maintenance judge module, whether there is maintenance situation or equipment failure situation in order to the photovoltaic plant described in judging according to described irradiance information and described generated output information; Further comprising the steps of after described step (3.a.5):
(3.b.1) whether the generated output information described in data server described in judges is along with time variations is consistent with the variation tendency of described irradiance information;
If (3.b.2) described generated output information along with time variations consistent with the variation tendency of described irradiance information, there is not maintenance situation and there is not the situation of equipment failure in the photovoltaic plant described in then described data server sends to described display terminal, then continues step (3.b.5);
If (3.b.3) described generated output information along with the variation tendency of time variations and described irradiance information inconsistent, there is the situation of maintenance situation or equipment failure in the photovoltaic plant described in then described data server sends to described display terminal, then continues step (3.b.5);
(3.b.5) data server described in draws generated output information histogram in described irradiance information curve, and the horizontal ordinate of described histogram is time point, and ordinate is generated output information.
In a preferred embodiment, refer to shown in Fig. 3, power station generated output collector gathers a generated output information every 15min, and on deliver to data processing server.If the situation of change of generated output is consistent with the parabolical trend of fine day irradiation value, (when namely terrestrial solar radiation value is in rising trend, power station generated output becomes ascendant trend equally; When terrestrial solar radiation value is on a declining curve, power station generated output becomes downtrending equally), then system judges that power station prosthetic on same day maintenance or equipment failure situation occur.The generated output of each time point is after data processing server, and the generated output in each moment is presented at display terminal interface with the form of histogram by system.
In a preferred embodiment, described data processing server also comprises: decay judge module, further comprising the steps of after described step (3.b.5):
(3.c.1) the assembly operating index a of the photovoltaic plant of decay judge module according to following formulae discovery described in;
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers;
(3.c.2) attenuation of the photovoltaic plant inner assembly described in the data server described in judges according to described operating index, and this attenuation is sent to described display terminal.
In a preferred embodiment, further comprising the steps of after described step (3.c.2):
(3.c.3) whether the operating index described in the data server described in judges reaches threshold value;
If (3.c.4) described operating index reaches threshold value, then described display terminal prompting user needs to repair or replace described photovoltaic plant inner assembly;
If (3.c.5) described operating index does not reach threshold value, then continue step (3.c.3).
When irradiance information and generated output information processing complete, the assembly operating efficiency that system is defined by this patent, judges the degrade condition of power station assembly.Wherein assembly operating effectiveness formula is defined as follows:
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers;
The impact of different installed capacity of power station has been excluded in this formula; Exclude due to different dimensions, Various Seasonal in this formula, and the difference of the irradiance caused.
In a preferred embodiment, data processing server, by the assembly operating index after calculating, terminal was shown according to month.User can be clear find out the aging conditions of assembly in power station, when the attenuation rate of assembly reaches threshold value, remind power station change assembly or keep in repair.
This motion proposes a kind of system and method for photovoltaic plant inner assembly Operational Data Analysis, solve due to circumstance complication, stand in operation changeable, the photovoltaic plant caused cannot carry out the problem of effective monitoring to the operation conditions of assembly.
Have employed the system and method for photovoltaic plant inner assembly Operational Data Analysis in this invention, compared with prior art, there is following beneficial effect:
(1) impact of weather condition on assembly generating trend is excluded;
(2) exclude due to manually maintenance or equipment failure, on the impact of assembly generating trend;
(3) the assembly operating index by proposing, is quantified as concrete numerical value by the operation conditions of assembly, to monitor the operation conditions of assembly and to analyze;
(4) do not need extra hardware spending, as intelligent assembly etc., save power plant construction and O&M cost.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (10)
1. for a system for photovoltaic plant inner assembly Operational Data Analysis, it is characterized in that, described system comprises:
Environment collector, in order to periodically to gather the irradiance information at photovoltaic plant place;
The communication server, in order to be sent to data processing server by the irradiance information of described environment collector collection;
Data processing server, in order to analyze described irradiance information to judge the weather condition that described photovoltaic plant runs;
Display terminal, in order to show the analysis result of described data processing server.
2. the system for photovoltaic plant inner assembly Operational Data Analysis according to claim 1, is characterized in that, described system also comprises:
Generated output collector, in order to periodically to gather the generated output information of photovoltaic plant.
3. the system for photovoltaic plant inner assembly Operational Data Analysis according to claim 2, is characterized in that, described data processing server comprises:
Fine day judge module, the weather condition run in order to the photovoltaic plant described in judging according to described irradiance information;
Whether maintenance judge module, exist maintenance situation or equipment failure situation in order to the photovoltaic plant described in judging according to described irradiance information and described generated output information.
4. the system for photovoltaic plant inner assembly Operational Data Analysis according to claim 3, is characterized in that, described data processing server also comprises:
Decay judge module, in order to the assembly operating index a of the photovoltaic plant according to following formulae discovery, and the attenuation of photovoltaic plant inner assembly described in judging according to described assembly operating index:
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers.
5. realize a method for photovoltaic plant inner assembly Operational Data Analysis based on system according to claim 1, it is characterized in that, described method comprises the following steps:
(1) the environment collector described in periodically gathers the irradiance information at described photovoltaic plant place;
(2) described irradiance information is sent to described data processing server by the communication server described in;
(3) the irradiance information described in data processing server analysis described in, and analysis result is sent to described display terminal;
(4) analysis result of the data processing server described in display terminal display described in.
6. the method for photovoltaic plant inner assembly Operational Data Analysis according to claim 5, is characterized in that, described step (3) is specially:
(3.a.1) the maximum irradiance information of photovoltaic plant in one day described in the data server described in obtains;
(3.a.2) data server described in judge before and after described maximum irradiance information whether Δ t exists when being more than or equal to described maximum irradiance information;
If when (3.a.3) before and after described maximum irradiance information, the existence of Δ t is more than or equal to described maximum irradiance information, then the photovoltaic plant described in exporting to described display terminal works in the result of non-fine day; Then step (3.a.5) is continued;
If (3.a.4) before and after described maximum irradiance information, Δ t does not exist when being more than or equal to described maximum irradiance information, then the photovoltaic plant described in exporting to described display terminal works in the result of fine day; Then step (3.a.5) is continued;
(3.a.5) data server described in draws the irradiance information curve of this day, and is sent to described display terminal, and the horizontal ordinate of described irradiance information curve is time point, and ordinate is irradiance information.
7. the method for photovoltaic plant inner assembly Operational Data Analysis according to claim 6, it is characterized in that, described system also comprises generated output collector, further comprising the steps of in described step (1):
Described generated output collector periodically gathers the generated output information of photovoltaic plant.
8. the method for photovoltaic plant inner assembly Operational Data Analysis according to claim 7, it is characterized in that, described data processing server comprises maintenance judge module, whether there is maintenance situation or equipment failure situation in order to the photovoltaic plant described in judging according to described irradiance information and described generated output information; Further comprising the steps of after described step (3.a.5):
(3.b.1) whether the generated output information described in data server described in judges is along with time variations is consistent with the variation tendency of described irradiance information;
If (3.b.2) described generated output information along with time variations consistent with the variation tendency of described irradiance information, there is not maintenance situation and there is not the situation of equipment failure in the photovoltaic plant described in then described data server sends to described display terminal, then continues step (3.b.5);
If (3.b.3) described generated output information along with the variation tendency of time variations and described irradiance information inconsistent, there is the situation of maintenance situation or equipment failure in the photovoltaic plant described in then described data server sends to described display terminal, then continues step (3.b.5);
(3.b.5) data server described in draws generated output information histogram in described irradiance information curve, and the horizontal ordinate of described histogram is time point, and ordinate is generated output information.
9. the method for photovoltaic plant inner assembly Operational Data Analysis according to claim 8, it is characterized in that, described data processing server also comprises: decay judge module, further comprising the steps of after described step (3.b.5):
(3.c.1) the assembly operating index a of the photovoltaic plant of decay judge module according to following formulae discovery described in;
a＝(w/c/f)×1000×100％
Wherein, a is described assembly operating index, and w is the generated output information that described generated output collector gathers, and c is the installed capacity of described photovoltaic plant, and f is the irradiance information that described environment collector gathers;
(3.c.2) attenuation of the photovoltaic plant inner assembly described in the data server described in judges according to described operating index, and this attenuation is sent to described display terminal.
10. the method for photovoltaic plant inner assembly Operational Data Analysis according to claim 9, is characterized in that, further comprising the steps of after described step (3.c.2):
(3.c.3) whether the operating index described in the data server described in judges reaches threshold value;
If (3.c.4) described operating index reaches threshold value, then described display terminal prompting user needs to repair or replace described photovoltaic plant inner assembly;
If (3.c.5) described operating index does not reach threshold value, then continue step (3.c.3).
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| CN112766668A (en) * | 2021-01-05 | 2021-05-07 | 华翔翔能科技股份有限公司 | Power management method and system for roof photovoltaic device |
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Address after: 200122 Pudong New Area Pu circuit 489, Shanghai, 11 floor, Yan Qiao building. Applicant after: Shanghai Xuji Electric Co., Ltd. Applicant after: Xuji Group Co., Ltd. Applicant after: State Grid Corporation of China Address before: 200122 Pudong New Area Pu circuit 489, Shanghai, 11 floor, Yan Qiao building. Applicant before: Shanghai Xuji Electric Co., Ltd. Applicant before: Xuji Group Co., Ltd. Applicant before: State Grid Corporation of China |
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