CN117039956A - Electric energy quality comprehensive treatment system based on novel photovoltaic energy storage technology - Google Patents
Electric energy quality comprehensive treatment system based on novel photovoltaic energy storage technology Download PDFInfo
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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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
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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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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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
- 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
- H02J3/381—Dispersed generators
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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
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Abstract
The application discloses an electric energy quality comprehensive treatment system based on a novel photovoltaic energy storage technology, which relates to the technical field of electric energy treatment and solves the problems that reactive current is not monitored in the reactive compensation process, and the reactive compensation effect is poor due to electric energy abnormality.
Description
Technical Field
The application relates to the technical field of electric energy management, in particular to an electric energy quality comprehensive management system based on a novel photovoltaic energy storage technology.
Background
Photovoltaic power generation is a technology that uses the photovoltaic effect of a semiconductor interface to directly convert light energy into electrical energy; the photovoltaic energy storage system mainly comprises three parts of a solar panel (component), a controller and an inverter, so that electric energy is conveyed into energy storage equipment for storage, and photovoltaic energy storage is completed.
The application with the patent application number of CN110504687A provides a comprehensive treatment system and a comprehensive treatment method for electric energy quality, wherein the system comprises a first static switch, a second static switch, a bidirectional AC-DC converter, a bidirectional DC-converter, an energy storage medium, a current detection unit, an AC input end for connecting a power grid and an AC output end for connecting a load; the bidirectional AC/DC converter comprises a harmonic compensation control unit, a reactive compensation control unit, a voltage sag compensation control unit, a voltage short-time interruption compensation control unit and an energy storage control unit, which are respectively used for carrying out management such as harmonic compensation, reactive compensation, voltage sag compensation, voltage short-time interruption compensation, peak clipping and valley filling utilization and the like on the electric energy quality. The comprehensive power quality control system and method can provide low-harmonic, high-quality and uninterrupted high-quality power for loads, and have remarkable economic benefits for industries with strict power supply quality requirements, particularly advanced manufacturing industries.
In the process of electric energy management, aiming at some electric energy areas incapable of meeting the requirements, electric energy load needs to be reduced in a reactive compensation mode, so that electric energy quality is guaranteed, but reactive current is not monitored in the reactive compensation process, reactive compensation effect is easily deteriorated due to abnormal electric energy, and the reactive compensation effect of the whole management area is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a comprehensive power quality control system based on a novel photovoltaic energy storage technology, which solves the problem that reactive power current is not monitored in the reactive power compensation process, and the reactive power compensation effect is easily deteriorated due to abnormal power.
In order to achieve the above purpose, the application is realized by the following technical scheme: electric energy quality comprehensive treatment system based on new technique of photovoltaic energy storage includes:
the regional data acquisition end is used for acquiring and confirming the past power consumption data of different monitoring regions and transmitting the acquired power consumption data to the compensation period confirmation end;
the compensation period confirmation end confirms corresponding data of a single day in power consumption data passing from different monitoring areas, and then judges the period to be compensated belonging to the corresponding monitoring area in the confirmation process, wherein the specific mode is as follows:
from the acquired electricity data, a group of time periods T are confirmed, and the electricity parameters corresponding to different time points of different monitoring areas in the time period T are marked as YD i-k Wherein i represents different monitoring areas, k represents different time points, and analyzing the electricity utilization parameter YD i-k Whether or not to meet YD i-k Y1, wherein Y1 is a preset value, if yes, marking the corresponding electricity utilization parameter as a parameter to be compensated, and if not, not performing any treatment;
confirming the existence time period of the parameter according to the confirmed parameter to be compensated, confirming other time periods which belong to different time periods of the same monitoring area, marking intersecting intersection sections of the confirmed time periods of the corresponding monitoring area as time periods to be compensated, and marking different monitoring areas;
the reactive compensation center directly performs power allocation from the photovoltaic energy storage center according to the period to be compensated confirmed by the corresponding monitoring area, performs reactive compensation on the appointed monitoring area, and comprises a compensation parameter confirmation unit, a reactive current monitoring unit and a trend analysis unit, wherein the compensation parameter confirmation unit confirms the compensation parameter of each monitoring area in the specific mode that:
determining the maximum electricity consumption parameter generated in the period to be compensated from the period to be compensated determined by the corresponding monitoring area, and marking the maximum electricity consumption parameter as DL i Wherein i represents different surveillance areas;
using BC i ＝DL i Obtaining compensation parameter BC by xC 1 i WhereinC1 is a preset fixed coefficient factor, according to the confirmed compensation parameter BC i Reactive compensation processing is carried out on the appointed monitoring area in the corresponding period to be compensated;
the reactive current monitoring unit monitors reactive current in a monitoring area in the reactive compensation process, generates a reactive current monitoring waveform chart according to the monitoring value and the trend of specific time, and transmits the generated reactive current monitoring waveform chart to the trend analysis unit;
the trend analysis unit performs trend analysis on the reactive current monitoring waveform diagram, judges whether reactive current of a corresponding monitoring area is in a fluctuation state according to a specific analysis result, and judges whether the corresponding monitoring area has electricity utilization abnormality according to the fluctuation analysis result, wherein the specific mode is as follows:
from the confirmed reactive current monitoring waveform diagram, each fluctuation point is confirmed, wherein the trend of the front line segment and the rear line segment of each fluctuation point is opposite, and the current parameter confirmed by each fluctuation point is marked as LC t Wherein t represents different fluctuation points, and t=1, 2, … …, n, and t is 1, represents that the fluctuation point is located at the first position, and t is n, represents the last group of fluctuation points;
confirming the current parameter difference values of two adjacent fluctuation points, adopting the current parameter difference value/time interval = trend according to the time interval, confirming the trend corresponding to the line type between the two fluctuation points, and taking the trend as the change trend of the subsequent fluctuation point;
analyzing whether the change potential meets GS > 0, wherein GS represents the change potential, if so, marking the corresponding fluctuation point as a point to be processed, and if not, not performing any processing;
confirming the current parameter LSo of the point to be treated, wherein o represents different points to be treated, and simultaneously confirming the change potential corresponding to the point to be treated, which is marked as GSo, adoptingIdentifying a floating parameter FDo corresponding to the point to be treated, wherein a1 and a2 are both preset ratiosAn example coefficient factor, wherein lambda is a correction factor, and the value is 2.154; e is the base of natural logarithms;
and sorting the floating parameters FDo according to the time trend, if the values are gradually increased, the floating of the corresponding monitoring area is severe, the abnormal condition of electricity consumption exists, a fluctuation abnormal signal is generated and transmitted to an external display end, and otherwise, no processing is performed.
Preferably, the system further comprises a photovoltaic energy storage center, wherein the photovoltaic energy storage center comprises a parameter acquisition unit, a data grading unit, a time limit confirmation unit and a potential difference adjustment unit;
the industrial parameter acquisition unit is used for acquiring the capacity rate parameter of the photovoltaic equipment in real time and acquiring the past energy storage data of the energy storage equipment, wherein the energy storage data comprise the electric storage parameters;
the data grading unit is used for receiving energy storage data of the energy storage device, partitioning the corresponding energy storage parameters in the energy storage device under different energy storage states according to different energy storage parameters in the energy storage data, and dividing the energy storage energy belonging to the same energy storage parameter into a grading area, wherein the specific mode is as follows:
marking the capacity rate parameter of the photovoltaic equipment at the current moment as CN q Wherein q represents different photovoltaic devices, and then confirms the energy storage energy of the corresponding energy storage device, confirms the belonging rank region, and then confirms the corresponding electric storage parameter of the next rank region of the belonging rank region, and marks XD;
when CN q Generating a potential difference adjustment signal when XD is greater than XD, and transmitting the potential difference adjustment signal into the potential difference adjustment unit;
when CN q No treatment is needed when XD is less than or equal to XD
The time limit confirming unit is used for receiving the energy production rate parameter of the photovoltaic equipment, judging whether the power generation parameter of the photovoltaic equipment causes energy waste or loss according to the energy production rate parameter and the specific capacity of the energy storage equipment, generating a corresponding potential difference adjusting signal and transmitting the potential difference adjusting signal into the potential difference adjusting unit.
Further, the potential difference adjusting means adjusts the potential differenceReceiving the signal, and adjusting the potential difference generated inside the photovoltaic device according to the potential difference adjusting signal until the capacity rate parameter CN of the photovoltaic device q Stopping when XD is not more than.
Advantageous effects
The application provides a comprehensive power quality control system based on a novel photovoltaic energy storage technology. Compared with the prior art, the method has the following beneficial effects:
according to the method, through the past electricity consumption parameters of the corresponding areas, the periods to be compensated of different areas are confirmed, and then, in the confirmed periods to be compensated, reactive compensation parameters are confirmed according to the electricity consumption parameters, reactive compensation is carried out on the periods according to the parameters, in the compensation process, reactive current is monitored, corresponding fluctuation points and fluctuation trends are confirmed, corresponding floating parameters are confirmed, whether abnormal electricity consumption exists is judged according to the specific trend of the floating parameters, corresponding abnormal signals are timely generated and displayed, the overall effect of whole electric energy management is improved, and meanwhile, the accuracy of judging the abnormal electricity consumption is improved;
in the process of photovoltaic energy storage, the energy storage equipment is divided into a plurality of different steps according to different storage parameters corresponding to different storage capacities, and then, whether the photovoltaic capacity rate is larger than the storage parameters of the corresponding steps is confirmed, if so, the potential difference of the corresponding photovoltaic equipment needs to be adjusted, so that electric energy waste is avoided, and the energy storage equipment is prevented from excessively heating to cause the influence of internal working devices.
Drawings
FIG. 1 is a schematic diagram of a principal frame of the present application;
FIG. 2 is a schematic diagram of the internal principle of the reactive compensation center of the present application;
fig. 3 is a schematic diagram of the internal principle of the photovoltaic energy storage center of the present application.
Detailed Description
The following description of the embodiments of the present application 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 application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
Referring to fig. 1, the application provides a comprehensive power quality control system based on a new photovoltaic energy storage technology, which comprises an area data acquisition end, a compensation period confirmation end, a reactive compensation center and a photovoltaic energy storage center, wherein the area data acquisition end is electrically connected with an input node of the compensation period confirmation end, the compensation period confirmation end is electrically connected with an input node of the reactive compensation center, and the photovoltaic energy storage center is electrically connected with the input node of the reactive compensation center;
referring to fig. 2, the reactive compensation center includes a compensation parameter confirmation unit, a reactive current monitoring unit, and a trend analysis unit, wherein the compensation parameter confirmation unit, the reactive current monitoring unit, and the trend analysis unit are electrically connected in sequence from an output end to an input end;
referring to fig. 3, the photovoltaic energy storage center includes a parameter acquisition unit, a data classification unit, a time limit confirmation unit and a potential difference adjustment unit, wherein the parameter acquisition unit is electrically connected with an input node of the time limit confirmation unit, and the time limit confirmation unit is electrically connected with an input node of the potential difference adjustment unit;
the regional data acquisition end is used for acquiring and confirming the past power consumption data of different monitoring regions, transmitting the acquired power consumption data into the compensation period confirmation end, wherein the acquired power consumption data is all data of the previous month;
the compensation period confirmation end confirms corresponding data of a single day in power consumption data passing from different monitoring areas, and then judges a period to be compensated belonging to the corresponding monitoring area in the confirmation process, wherein the specific mode for carrying out the confirmation is as follows:
from the acquired electricity consumption data, a group of time periods T are confirmed, wherein T is generally valued for 24h, and the time periods T correspond to different time points of different monitoring areasThe applied electrical parameter is marked as YD i-k Wherein i represents different monitoring areas, k represents different time points, and analyzing the electricity utilization parameter YD i-k Whether or not to meet YD i-k More than Y1, wherein Y1 is a preset value, the specific value is drawn by an operator according to experience, if the specific value is satisfied, the corresponding power utilization parameter is marked as a parameter to be compensated, and if the specific value is not satisfied, no treatment is carried out;
confirming the existence time period of the parameter according to the confirmed parameter to be compensated, confirming other time periods which belong to different time periods of the same monitoring area, marking the intersecting cross section of the confirmed time period of the corresponding monitoring area as the time period to be compensated, and marking different monitoring areas differently.
Specifically, in the actual operation process, if the corresponding electricity utilization parameter exceeds the standard, the reactive current value is too large, and in this case, the reactive current needs to be effectively reduced in a reactive compensation mode, so that the system can be ensured to normally operate, and the corresponding power system cannot have excessive power burden.
The reactive compensation center directly performs power allocation from the photovoltaic energy storage center according to the period to be compensated confirmed by the corresponding monitoring area, and performs reactive compensation on the appointed monitoring area, wherein the compensation parameter confirmation unit confirms the compensation parameters of each monitoring area, and the confirmation mode is as follows:
determining the maximum electricity consumption parameter generated in the period to be compensated from the period to be compensated determined by the corresponding monitoring area, and marking the maximum electricity consumption parameter as DL i Wherein i represents different surveillance areas;
using BC i ＝DL i Obtaining compensation parameter BC by xC 1 i Wherein C1 is a preset fixed coefficient factor, the specific value of which is empirically determined by an operator according to the confirmed compensation parameter BC i And (3) carrying out reactive compensation treatment on the appointed monitoring area in the corresponding period to be compensated, and compensating in advance when the reactive compensation arrives, so as to ensure the normal operation of power transportation.
The reactive current monitoring unit monitors reactive current in a monitoring area in the reactive compensation process, generates a reactive current monitoring waveform chart according to the monitoring value and the trend of specific time, and transmits the generated reactive current monitoring waveform chart to the trend analysis unit;
the trend analysis unit is used for carrying out trend analysis on the reactive current monitoring waveform diagram, judging whether reactive current of a corresponding monitoring area is in a fluctuation state according to a specific analysis result, and judging whether electricity utilization abnormality exists in the corresponding monitoring area according to the fluctuation analysis result, wherein the specific analysis mode is as follows:
from the confirmed reactive current monitoring waveform diagram, each fluctuation point is confirmed, wherein the trend directions of the front line segment and the rear line segment of each fluctuation point are opposite, so that when one line segment trend of each fluctuation point is positive, the subsequent line segment trend is negative, and the current parameter confirmed by each fluctuation point is marked as LC t Wherein t represents different fluctuation points, and t=1, 2, … …, n, and t is 1, represents that the fluctuation point is located at the first position, and t is n, represents the last group of fluctuation points;
confirming the current parameter difference values of two adjacent fluctuation points, and according to the time interval, adopting the current parameter difference value/time interval = trend to confirm the trend of the line type between the two corresponding fluctuation points, and taking the trend as the change trend of the later fluctuation point, wherein the later fluctuation point is one fluctuation point at the rear end in the two fluctuation points;
analyzing whether the change potential meets GS > 0, wherein GS represents the change potential, if so, marking the corresponding fluctuation point as a point to be processed, and if not, not performing any processing;
confirming the current parameter LSo of the point to be treated, wherein o represents different points to be treated, and simultaneously confirming the change potential corresponding to the point to be treated, which is marked as GSo, adoptingIdentifying a floating parameter FDo corresponding to the point to be processed, wherein a1 and a2 are both preset scale factor and lambda is correction factorThe value is 2.154; e is the base of natural logarithms;
and sorting the floating parameters FDo according to the time trend, if the values are gradually increased, the floating of the corresponding monitoring area is severe, the abnormal condition of electricity consumption exists, a fluctuation abnormal signal is generated and transmitted to an external display end, and otherwise, no processing is performed.
When the corresponding compensation period is confirmed, if the monitoring area is not monitored in the specific compensation process, compensation parameters are not enough easily to influence the whole electric energy quality due to fluctuation of reactive current, so that the current fluctuation parameter generated in the compensation process is required to be monitored in the monitoring process, the trend between the floating value and the corresponding floating point is considered in the monitoring process, if the trend and trend are gradually increased, the situation that the corresponding reactive current still has severe fluctuation after compensation is represented, and the circuit is abnormal in the use process and needs to be processed in time;
example two
In the implementation process, compared to the above embodiment, the embodiment further includes:
the industrial parameter acquisition unit is used for acquiring capacity rate parameters of the photovoltaic equipment in real time and acquiring past energy storage data of the energy storage equipment, wherein the energy storage data comprise the energy storage parameters, and particularly, when the internal energy storage capacity of the energy storage equipment is different in the energy storage process of the energy storage equipment, the energy storage rate is also different, and when the capacity is more than 80% or less than 10%, the energy storage rate is slower;
the data grading unit is used for receiving energy storage data of the energy storage device, partitioning the corresponding energy storage parameters in the energy storage device under different energy storage states according to different energy storage parameters in the energy storage data, dividing the energy storage energy belonging to the same energy storage parameter into a plurality of grading areas, and dividing the energy storage parameter of the corresponding energy storage device into a plurality of grading areas, wherein each grading area corresponds to different energy storage energy and different energy storage parameters;
the time limit confirming unit is used for receiving the energy production rate parameter of the photovoltaic equipment, judging whether the power generation parameter of the photovoltaic equipment causes energy waste or loss according to the energy production rate parameter and the specific capacity of the energy storage equipment, generating a corresponding potential difference adjusting signal and transmitting the potential difference adjusting signal into the potential difference adjusting unit, wherein the specific mode for judging is as follows:
marking the capacity rate parameter of the photovoltaic equipment at the current moment as CN q Wherein q represents different photovoltaic devices, and then confirms the energy storage energy of the corresponding energy storage device, confirms the belonging rank region, and then confirms the corresponding electricity storage parameter of the next rank region of the belonging rank region, and marks XD, specifically, when electricity storage is started, the capacity rate of the photovoltaic device is not greater than the electricity storage parameter, if greater than the electricity storage parameter, the abnormality of the energy storage device is caused, and an operator can quickly find the abnormal situation;
when CN q Generating a potential difference adjustment signal when XD is greater than XD, and transmitting the potential difference adjustment signal into the potential difference adjustment unit;
when CN q No treatment is needed when XD is not more than or equal to XD.
Example III
In a specific implementation process, the embodiment further includes:
the potential difference adjusting unit receives the potential difference adjusting signal and adjusts the potential difference generated in the photovoltaic equipment according to the potential difference adjusting signal until the capacity rate parameter CN of the photovoltaic equipment q Stopping when XD is not more than.
Specifically, when energy is stored, the capacity rate at the current moment corresponds to the normal receiving of the energy storage equipment, but the electric storage parameter of the next-stage area can change, if the capacity rate is far greater than the electric storage parameter when the capacity rate is low, electric energy loss can be caused, the energy storage equipment is heated, redundant electric energy is converted into heat energy, the action can not only influence the internal working devices of the energy storage equipment, but also cause excessive waste of electric energy, the electric energy waste can not be caused by adopting the potential difference adjustment mode, excessive heating of the energy storage equipment can not be caused, and the excessive capacity rate is avoided from the source.
Example IV
This embodiment includes all of the three embodiments described above in the specific implementation.
Some of the data in the above formulas are numerical calculated by removing their dimensionality, and the contents not described in detail in the present specification are all well known in the prior art.
The above embodiments are only for illustrating the technical method of the present application and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present application may be modified or substituted without departing from the spirit and scope of the technical method of the present application.
Claims (7)
1. Electric energy quality comprehensive treatment system based on new technique of photovoltaic energy storage, its characterized in that includes:
the regional data acquisition end is used for acquiring and confirming the past power consumption data of different monitoring regions and transmitting the acquired power consumption data to the compensation period confirmation end;
the compensation period confirmation end confirms corresponding data of a single day in power consumption data passing from different monitoring areas, and then judges a period to be compensated belonging to the corresponding monitoring area in the confirmation process;
the reactive compensation center directly performs power allocation from the photovoltaic energy storage center according to the period to be compensated confirmed by the corresponding monitoring area, performs reactive compensation on the appointed monitoring area, and comprises a compensation parameter confirmation unit, a reactive current monitoring unit and a trend analysis unit, wherein the compensation parameter confirmation unit confirms the compensation parameter of each monitoring area;
the reactive current monitoring unit monitors reactive current in a monitoring area in the reactive compensation process, generates a reactive current monitoring waveform chart according to the monitoring value and the trend of specific time, and transmits the generated reactive current monitoring waveform chart to the trend analysis unit;
the trend analysis unit is used for carrying out trend analysis on the reactive current monitoring waveform diagram, judging whether reactive current of the corresponding monitoring area is in a fluctuation state according to a specific analysis result, and judging whether electricity utilization abnormality exists in the corresponding monitoring area according to a fluctuation analysis result.
2. The comprehensive power quality management system based on the new photovoltaic energy storage technology according to claim 1, wherein the specific mode of the compensation period confirmation end for confirming the period to be compensated in the monitoring area is as follows:
from the acquired electricity data, a group of time periods T are confirmed, and the electricity parameters corresponding to different time points of different monitoring areas in the time period T are marked as YD i-k Wherein i represents different monitoring areas, k represents different time points, and analyzing the electricity utilization parameter YD i-k Whether or not to meet YD i-k Y1, wherein Y1 is a preset value, if yes, marking the corresponding electricity utilization parameter as a parameter to be compensated, and if not, not performing any treatment;
confirming the existence time period of the parameter according to the confirmed parameter to be compensated, confirming other time periods which belong to different time periods of the same monitoring area, marking the intersecting cross section of the confirmed time period of the corresponding monitoring area as the time period to be compensated, and marking different monitoring areas differently.
3. The integrated power quality management system based on the new photovoltaic energy storage technology according to claim 1, wherein the compensation parameter confirmation unit confirms the compensation parameter of each monitoring area in the following specific manner:
determining the maximum electricity consumption parameter generated in the period to be compensated from the period to be compensated determined by the corresponding monitoring area, and marking the maximum electricity consumption parameter as DL i Wherein i represents different surveillance areas;
using BC i ＝DL i Obtaining compensation parameter BC by xC 1 i Wherein C1 is a predetermined fixed factor, based on the determined compensation parameter BC i Reactive compensation processing is carried out on the appointed monitoring area in the corresponding period to be compensated。
4. The comprehensive power quality management system based on the new photovoltaic energy storage technology according to claim 1, wherein the specific mode of determining whether the power consumption abnormality exists in the corresponding monitoring area by the trend analysis unit is as follows:
from the confirmed reactive current monitoring waveform diagram, each fluctuation point is confirmed, wherein the trend of the front line segment and the rear line segment of each fluctuation point is opposite, and the current parameter confirmed by each fluctuation point is marked as LC t Wherein t represents different fluctuation points, and t=1, 2, … …, n, and t is 1, represents that the fluctuation point is located at the first position, and t is n, represents the last group of fluctuation points;
confirming the current parameter difference values of two adjacent fluctuation points, adopting the current parameter difference value/time interval = trend according to the time interval, confirming the trend corresponding to the line type between the two fluctuation points, and taking the trend as the change trend of the subsequent fluctuation point;
analyzing whether the change potential meets GS > 0, wherein GS represents the change potential, if so, marking the corresponding fluctuation point as a point to be processed, and if not, not performing any processing;
confirming the current parameter LSo of the point to be treated, wherein o represents different points to be treated, and simultaneously confirming the change potential corresponding to the point to be treated, which is marked as GSo, adoptingConfirming a floating parameter FDo corresponding to a point to be processed, wherein a1 and a2 are preset scale factor factors, lambda is a correction factor, and the value is 2.154; e is the base of natural logarithms;
and sorting the floating parameters FDo according to the time trend, if the values are gradually increased, the floating of the corresponding monitoring area is severe, the abnormal condition of electricity consumption exists, a fluctuation abnormal signal is generated and transmitted to an external display end, and otherwise, no processing is performed.
5. The comprehensive power quality management system based on the novel photovoltaic energy storage technology according to claim 1, further comprising a photovoltaic energy storage center, wherein the photovoltaic energy storage center comprises a parameter acquisition unit, a data grading unit, a time limit confirmation unit and a potential difference adjustment unit;
the industrial parameter acquisition unit is used for acquiring the capacity rate parameter of the photovoltaic equipment in real time and acquiring the past energy storage data of the energy storage equipment, wherein the energy storage data comprise the electric storage parameters;
the data grading unit is used for receiving energy storage data of the energy storage device, partitioning the corresponding energy storage parameters in the energy storage device under different energy storage states according to different energy storage parameters in the energy storage data, dividing the energy storage energy belonging to the same energy storage parameter into a plurality of grading areas, and dividing the energy storage parameter of the corresponding energy storage device into a plurality of grading areas, wherein each grading area corresponds to different energy storage energy and different energy storage parameters;
the time limit confirming unit is used for receiving the energy production rate parameter of the photovoltaic equipment, judging whether the power generation parameter of the photovoltaic equipment causes energy waste or loss according to the energy production rate parameter and the specific capacity of the energy storage equipment, generating a corresponding potential difference adjusting signal and transmitting the potential difference adjusting signal into the potential difference adjusting unit.
6. The comprehensive power quality management system based on the new photovoltaic energy storage technology according to claim 5, wherein the time limit confirmation unit generates the potential difference adjustment signal in the following specific ways:
marking the capacity rate parameter of the photovoltaic equipment at the current moment as CN q Wherein q represents different photovoltaic devices, and then confirms the energy storage energy of the corresponding energy storage device, confirms the belonging rank region, and then confirms the corresponding electric storage parameter of the next rank region of the belonging rank region, and marks XD;
when CN q Generating a potential difference adjustment signal when XD is greater than XD, and transmitting the potential difference adjustment signal into the potential difference adjustment unit;
when CN q No treatment is needed when XD is not more than or equal to XD.
7. The comprehensive power quality control system based on the new photovoltaic energy storage technology according to claim 6, wherein the potential difference adjusting unit receives the potential difference adjusting signal and adjusts the potential difference generated inside the photovoltaic device according to the potential difference adjusting signal until the capacity rate parameter CN of the photovoltaic device q Stopping when XD is not more than.
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