CN117220344B - Isolated photovoltaic grid-connected control method and device - Google Patents
Isolated photovoltaic grid-connected control method and device Download PDFInfo
- Publication number
- CN117220344B CN117220344B CN202311464458.8A CN202311464458A CN117220344B CN 117220344 B CN117220344 B CN 117220344B CN 202311464458 A CN202311464458 A CN 202311464458A CN 117220344 B CN117220344 B CN 117220344B
- Authority
- CN
- China
- Prior art keywords
- equipment
- power
- power generation
- generation amount
- electric quantity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000005611 electricity Effects 0.000 claims abstract description 51
- 238000010248 power generation Methods 0.000 claims description 158
- 238000012423 maintenance Methods 0.000 claims description 12
- 238000011156 evaluation Methods 0.000 claims description 6
- 230000002354 daily effect Effects 0.000 description 38
- 230000000694 effects Effects 0.000 description 12
- 230000002159 abnormal effect Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides an isolated photovoltaic grid-connected control method and device, which are used for predicting generating capacity by acquiring historical weather data and weather forecast data, judging whether a region where a current photovoltaic device is positioned has a power failure risk according to power failure risk scanning, acquiring daily electric quantity of equipment supplied by the photovoltaic device, and judging whether real-time generating capacity needs to be isolated, split and stored according to a generating capacity prediction result, a judging result and the daily electric quantity; if the judgment is made, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion; if not, controlling the real-time generating capacity to enter a power grid system and an equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion; the first proportion and the second proportion are the electric quantity entering the power grid system and the electric quantity entering the equipment electricity storage module. The invention improves the accuracy of the prediction of the generated energy of the photovoltaic device so as to better schedule the generated energy.
Description
Technical Field
The invention relates to the technical field of photovoltaic control, in particular to an isolated photovoltaic grid-connected control method and device.
Background
Along with the rapid development of power technology, various kinds of control over power are more accurate, at present, photovoltaic power generation is applied more and more, but the electric quantity of photovoltaic power generation is affected by a plurality of factors, so that accurate prediction cannot be obtained, and therefore equipment which is powered by means of photovoltaic power generation cannot work stably, and the equipment has negative effects on normal operation of a plurality of important equipment which affect daily life of residents and a photovoltaic power station.
Disclosure of Invention
Therefore, the embodiment of the invention provides the isolated photovoltaic grid-connected control method and the isolated photovoltaic grid-connected control device, which improve the accuracy of the power generation amount prediction of the photovoltaic device and further can better schedule the power generation amount.
In order to solve the above problems, the present invention provides an isolated photovoltaic grid-connected control method, comprising: acquiring a real-time power generation amount and a tomorrow power generation amount prediction result of a solar photovoltaic device; the method for obtaining the power generation quantity prediction result of the tomorrow specifically comprises the following steps: acquiring historical weather data of the geographic position of the current photovoltaic device; acquiring tomorrow weather forecast data of a region where a current photovoltaic device is located, searching dates with similar data in historical weather data according to weather forecast data correspondence, and acquiring historical power generation capacity of the photovoltaic device under the dates; predicting the power generation amount of the open sun according to the historical power generation amount and the weather forecast data to obtain a power generation amount prediction result; acquiring operation data of a power grid system, and scanning the power failure risk of the power grid system to obtain a scanning result; judging whether the open sun of the area where the photovoltaic device is located has a power failure risk according to the scanning result, and obtaining a judging result; carrying out importance level assessment on equipment supplied by the current photovoltaic device power generation, defining an importance level and acquiring daily electricity consumption of the equipment under the corresponding importance level; judging whether the real-time generated energy is required to be isolated, split and stored according to the generated energy prediction result, the judgment result and the daily electric quantity; if yes, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion; if not, controlling the real-time generating capacity to enter a power grid system and an equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion; the first proportion and the second proportion are the electric quantity entering the power grid system and the electric quantity entering the equipment electricity storage module.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the prediction of the tomorrow power generation amount is accurately predicted by means of the geographic position, so that the longitude and latitude of the position of the photovoltaic system can be better known, the weather of the current region can be better observed, and meanwhile, the prediction can be more accurate by means of reference of the historical power generation amount. Meanwhile, whether the power grid is subjected to power failure risk scanning is further set, whether the area where the open solar photovoltaic system is located is provided with power failure risk or not is judged, the generated energy of the photovoltaic device is allocated in advance, the situation that the equipment is not supplied with electricity and the use is affected is avoided, meanwhile, information of the photovoltaic device is supplied to the equipment, importance level evaluation is conducted on the information, daily electricity of the equipment under each importance level is obtained, important equipment can be guaranteed preferentially when the electric quantity is allocated, basic operation is guaranteed, the power failure risk and the generated energy are predicted to be combined, the daily electricity of the important equipment is combined, the generated energy of the current photovoltaic equipment can be isolated and split better, the first proportioning and the second proportioning are followed during splitting, so that the split is more scientific, the normal operation of the equipment and the guarantee capability when abnormal conditions are met are guaranteed, normal electricity consumption of residents and basic operation of the power equipment are guaranteed as much as possible, and the daily life is not affected.
In one example of the present invention, predicting the power generation amount of the open day according to the historical power generation amount and in combination with the weather forecast data, to obtain the power generation amount prediction result, further includes: the method for calibrating the power generation quantity comprises the steps of establishing a power generation quantity calibration model, and calibrating a power generation quantity prediction result, and specifically comprises the following steps: dividing each day into a plurality of power generation time periods, counting the power generation amount of the photovoltaic device in each power generation time period, and comparing the power generation amount with a predicted power generation amount prediction result of each power generation time period to obtain a first calibration result; and calibrating the power generation quantity prediction result according to the first calibration result.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the generating capacity prediction result is calibrated by setting up the generating capacity calibration model, so that the generating capacity prediction result is more accurate, the follow-up generating capacity is isolated and shunted, the score is more accurate, the daily division into a plurality of generating time periods is set, the generating capacity of each generating time period and each predicted generating time period is compared, the generating capacity prediction result is calibrated, the follow-up generating capacity prediction result can be calibrated by means of the first calibration result, the generating capacity prediction result is more accurate, the follow-up isolation and shunting is more accurate and more fit with the actual condition, and then the normal operation of each device and the normal electricity consumption life of residents can be better ensured.
In one example of the present invention, calibrating the power generation amount prediction result according to the first calibration result further includes: defining the generated energy of a plurality of generating time periods as C n The predicted power generation amount prediction result for each corresponding power generation period is Y n The first calibration result h is calculated according to the following formula:wherein k is a calibration coefficient, and k > 0; the calibrated power generation amount prediction result is Y n ＇=Y n ±h。
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the generated energy of a plurality of generating time periods and the generated energy prediction result of each generating time period are calculated through setting, and the first calibration result is obtained through introducing the calibration coefficient, so that the first calibration result is more fit with the actual situation, the generated energy prediction result after subsequent calibration is more accurate, the follow-up science when the generated energy is isolated and shunted is guaranteed, the place where the required electric quantity is used can be better guaranteed, and the normal operation of equipment and the normal electricity consumption of residents are guaranteed.
In an example of the present invention, operation data of a power grid system is obtained, and a power outage risk scan is performed on the power grid system to obtain a scan result, and the method further includes: performing analog scanning on all the connected devices in the power grid system, and recording the current power supply quantity of all the connected devices as a first power supply quantity; assuming that one of the connected devices fails, counting the power supply quantity of all the connected devices as a second power supply quantity, comparing the first power supply quantity with the second power supply quantity to obtain the power supply quantity required by the current device, and recording the power supply range influenced by the current device; and judging whether the power supply range comprises the area where the photovoltaic device is located, and if so, judging that the power failure risk exists.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: by setting up to carry out the simulation scanning to the equipment that operates in the electric wire netting system to when assuming that certain equipment breaks down, the power supply volume of all connected equipment and the power supply volume when all equipment normally operates simultaneously, and then can obtain the reduction of the different power supply volume when every equipment breaks down through the comparison of two power supply volumes, then when sending the trouble, can fix a position the equipment of sending the trouble fast, and then can judge the scope of influence of current equipment fast, not only follow-up can conveniently to the maintenance of fault equipment, also make the convenience and can influence photovoltaic device's electricity generation to current fault equipment and make faster judgement, guarantee photovoltaic device power generation area's normal operating and can provide fine judgement basis for the shunting photovoltaic device generated energy, make the branch more accord with reality, can better guarantee resident's power consumption and equipment's normal operating.
In one example of the present invention, the required power supply amount of each device in the power grid system is recorded by means of analog scanning, and risk grading is performed on the power supply amount from large to small according to the size, which specifically includes: when the power supply quantity of the equipment is larger than or equal to a first threshold value, defining the current equipment as a first risk level; when the power supply quantity of the equipment is smaller than the first threshold value and larger than or equal to the second threshold value, defining the current equipment as a second risk level; when the power supply quantity of the equipment is smaller than the second threshold value, defining the current equipment as a third risk level; when the equipment of the first risk level fails or the equipment of the first risk level and the equipment of the second risk level are combined to fail, directly judging that the equipment has power failure risk; when the equipment with the second risk level fails, judging whether the equipment has power failure risk or not according to the power supply range which is specifically influenced by the equipment; and when the equipment with the third risk level fails, judging the probability of power failure risk, and inquiring the power grid system to obtain specific maintenance time.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the risk grading is carried out on the equipment with different power supply amounts in the power grid system, so that the equipment power supply amount is graded from large to small, when the equipment with the first risk grade fails or fails together with the equipment with the second risk grade, the current power failure risk is judged, a serious accident occurs to the power equipment at the moment, so that the influence is large, the power failure is judged, the influence range of the equipment is required to be paid attention to for judgment when the equipment with the second risk grade fails, and the probability of the small accident is high only when the equipment with the third risk fan fails, the specific maintenance time is inquired, the probability of the power failure is small, and the power failure is basically repaired in a short time, so that the judgment of the power failure is more accurate and more practical through the grading of different grades.
In one example of the present invention, the method for evaluating importance level of equipment supplied by current photovoltaic device power generation, defining importance level and obtaining daily electricity consumption of equipment under corresponding importance level further includes: carrying out importance level assessment according to the power supply influence of equipment supplied by each photovoltaic device power generation, and particularly dividing the power supply influence into a first importance level, a second importance level and a third importance level from large to small; the method comprises the steps of obtaining the sum of the daily electric quantity of equipment under each important grade, defining the sum of the daily electric quantity of the equipment under the first important grade as first guaranteed electric quantity, the sum of the daily electric quantity of the equipment under the second important grade as second guaranteed electric quantity, and the daily electric quantity of the equipment under the third important grade as third guaranteed electric quantity.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the power supply influence of the equipment supplied by the photovoltaic device power generation is evaluated in a grading manner, because the equipment with large power supply influence has a large scope of coverage, the indirectly influenced equipment is more, the normal operation of the equipment needs to be guaranteed preferentially, the equipment is in a first important grade, the daily electric quantity of the equipment is the first protection electric quantity, the power supply needs to be guaranteed preferentially when the equipment is isolated and shunted, the rest of the equipment is divided into a plurality of important grades according to the power supply influence, the grading is carried out through the power supply influence, the shunting is guaranteed to have a priority, the operation of the most basic of the equipment can be better guaranteed, the response capability and the processing capability can be improved when abnormal conditions occur, and the normal power utilization of residents can be guaranteed as much as possible.
In one example of the present invention, determining whether the real-time power generation amount needs to be isolated, shunted and stored according to the power generation amount prediction result, the determination result and the daily power amount further includes: when the power generation quantity prediction result is smaller than or equal to the first safety value and the judgment result is any one or combination of the power failure risks, the real-time power generation quantity is judged to be required to be isolated, split and stored.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: through judging when satisfying the generated energy prediction result and being less than first safe value or getting into when judging to have the power failure risk and keep apart the reposition of redundant personnel for the reposition of redundant personnel of photovoltaic device's generated energy is controlled more accurately, can consider more influence and factor, ensured the scientificity and the laminating nature of reposition of redundant personnel, make keep apart the power consumption that the reposition of redundant personnel can be better guarantee under the unusual condition and provide, make resident's power consumption life more have the guarantee.
In one example of the present invention, if the determination is yes, controlling the real-time power generation amount according to the first ratio, and controlling the real-time power generation amount to enter the grid system and the equipment power storage module, further comprising: under the first proportion, the electric quantity of the real-time generated energy entering the equipment power storage module is preferentially ensured to be larger than the first ensured electric quantity, the residual electric quantity ensures the second ensured electric quantity and the third ensured electric quantity, and the residual electric quantity enters the power grid system again; if the electric quantity entering the equipment power storage module is smaller than the first protection electric quantity under the first proportion, the use power of the equipment is reduced; and/or; and acquiring electric quantity from the power grid system.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the current entering the electricity storage module is preferentially ensured to be larger than the first protection electric quantity under the first proportion, namely the normal electricity consumption of the equipment with the largest influence is ensured, so that the equipment cannot stop working, the electricity consumption and the electricity generation of the whole lower supply chain are indirectly influenced, meanwhile, the rest of the second and third protection electric quantities are ensured, so that the distribution of the electricity utilization guarantee is more reasonable and scientific, and meanwhile, the electricity entering the equipment electricity storage module is also arranged under the first proportion, and the electricity consumption of the equipment is reduced when the electricity consumption entering the equipment electricity storage module is smaller than the first protection electric quantity; and/or; and acquiring electric quantity from the power grid system, ensuring the operation of a foundation to the greatest extent, and ensuring the electricity consumption and the power supply of the foundation as much as possible, so that the electricity consumption life of residents is ensured.
In one example of the present invention, if the determination is negative, controlling the real-time power generation amount according to a second ratio, controlling the real-time power generation amount to enter the grid system and the equipment power storage module, wherein the second ratio is greater than the first ratio, and includes: under the second proportion, the sum of the first guaranteed electric quantity, the second guaranteed electric quantity and the third guaranteed electric quantity is obtained as the guaranteed total quantity, the electric quantity of the real-time generated energy entering the equipment power storage module is larger than or equal to the guaranteed total quantity, and the residual electric quantity enters the power grid system.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: through setting up under the second ratio, the total electric quantity of guarantee total volume that obtains is daily normal work, promptly under the prerequisite of guaranteeing normal operating, unnecessary electric quantity gets into electric wire netting system and obtains the benefit, has improved the utilization ratio of generated energy, obtains the benefit under the prerequisite of guaranteeing basic operation for whole operational environment is more practical and scientific.
The invention also provides an isolated photovoltaic grid-connected control device, which comprises: the acquisition module is used for acquiring the real-time power generation amount of the solar photovoltaic device and the power generation amount prediction result of the open sun; the method for obtaining the power generation quantity prediction result of the tomorrow specifically comprises the following steps: acquiring historical weather data of the geographic position of the current photovoltaic device; acquiring tomorrow weather forecast data of a region where a current photovoltaic device is located, searching dates with similar data in historical weather data according to weather forecast data correspondence, and acquiring historical power generation capacity of the photovoltaic device under the dates; predicting the power generation amount of the open sun according to the historical power generation amount and the weather forecast data to obtain a power generation amount prediction result; acquiring operation data of a power grid system, and scanning the power failure risk of the power grid system to obtain a scanning result; judging whether the open sun of the area where the photovoltaic device is located has a power failure risk according to the scanning result, and obtaining a judging result; the judging module is used for carrying out importance level evaluation on equipment supplied by the current photovoltaic device power generation, defining an importance level and acquiring daily electricity quantity of the equipment under the corresponding importance level; judging whether the real-time generated energy is required to be isolated, split and stored according to the generated energy prediction result, the judgment result and the daily electric quantity; if yes, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion; if not, controlling the real-time generating capacity to enter the power grid system and the equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the geographical position, the weather forecast data and the historical generated energy are obtained through the obtaining module, the generated energy prediction result is obtained according to the geographical position, the weather forecast data and the historical generated energy, the power grid data are obtained through the obtaining module, the scanning structure is obtained according to the power grid data, and then the proportion and the distribution of the generated energy are judged through the judging module, so that the isolation and the distribution of the generated energy of the photovoltaic device are more practical, and the normal power utilization of current residents and the normal use of equipment can be ensured when abnormal conditions occur.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) The prediction of the tomorrow power generation amount is accurately predicted by means of the geographic position, so that the longitude and latitude of the position of the photovoltaic system can be better known, the weather of the current region can be better observed, and meanwhile, the prediction can be more accurate by means of reference of the historical power generation amount. Meanwhile, whether the power grid is subjected to power failure risk scanning is further set, whether the area where the open solar photovoltaic system is located is provided with power failure risk or not is judged, the generated energy of the photovoltaic device is allocated in advance, the situation that the equipment is not supplied with electricity and the use is affected is avoided, meanwhile, information of the photovoltaic device is supplied to the equipment, importance level evaluation is conducted on the information, daily electricity of the equipment under each importance level is obtained, important equipment can be guaranteed preferentially when the electric quantity is allocated, basic operation is guaranteed, the power failure risk and the generated energy are predicted to be combined, the daily electricity of the important equipment is combined, the generated energy of the current photovoltaic equipment can be isolated and split better, the first proportioning and the second proportioning are followed during splitting, so that the split is more scientific, the normal operation of the equipment and the guarantee capability when abnormal conditions are met are guaranteed, normal electricity consumption of residents and basic operation of the power equipment are guaranteed as much as possible, and the daily life is not affected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art;
fig. 1 is a flowchart of an isolated photovoltaic grid-connected control method according to an embodiment of the present invention;
fig. 2 is a block diagram of an isolated photovoltaic grid-connected control device according to an embodiment of the present invention.
Reference numerals illustrate:
100 is an isolated photovoltaic grid-connected control device; 110 is an acquisition module; 120 is a judgment module.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with present invention are described in detail with embodiments of the present invention including only some but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
[ first embodiment ]
Referring to fig. 1, an isolated photovoltaic grid-connected control method includes:
step S100: acquiring a real-time power generation amount and a tomorrow power generation amount prediction result of a solar photovoltaic device;
the method for obtaining the power generation quantity prediction result of the tomorrow specifically comprises the following steps:
step S110: acquiring historical weather data of the geographic position of the current photovoltaic device; acquiring tomorrow weather forecast data of a region where a current photovoltaic device is located, searching dates with similar data in historical weather data according to weather forecast data correspondence, and acquiring historical power generation capacity of the photovoltaic device under the dates; predicting the power generation amount of the open sun according to the historical power generation amount and the weather forecast data to obtain a power generation amount prediction result;
step S120: acquiring operation data of a power grid system, and scanning the power failure risk of the power grid system to obtain a scanning result; judging whether the open sun of the area where the photovoltaic device is located has a power failure risk according to the scanning result, and obtaining a judging result;
step S130: carrying out importance level assessment on equipment supplied by the current photovoltaic device power generation, defining an importance level and acquiring daily electricity consumption of the equipment under the corresponding importance level;
Step S140: judging whether the real-time generated energy is required to be isolated, split and stored according to the generated energy prediction result, the judgment result and the daily electric quantity;
step S150: if yes, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion; if not, controlling the real-time generating capacity to enter a power grid system and an equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion;
the first proportion and the second proportion are the electric quantity entering the power grid system and the electric quantity entering the equipment electricity storage module.
Specifically, the weather forecast includes weather type and environmental information, specifically includes sunny days, cloudy days, rainy days, foggy days, snowy days, etc., and the environmental information includes solar radiation intensity, highest temperature, lowest temperature, humidity, wind direction, etc.
Specifically, when searching and comparing weather with the weather forecast data in the historical weather data, the method can be specifically realized in the following way.
Firstly, it is to be understood that the daily generated energy of the photovoltaic device is recorded in real time and can be recorded in a generated energy log, and then the generated energy log is only required to be called to look up the generated energy of a specific time or a specific time period in a certain day.
For example, according to weather forecast data, it is known that the tomorrow weather is cloudy, the highest temperature is T1, the lowest temperature is T2, the illumination intensity is L1, at this time, historical weather data is referred to, it is assumed that in certain daily historical weather data, the highest temperature is T3, the lowest temperature is T4, the illumination intensity is L2, at this time, comparison is performed, if 102%. Gtoreq.T 1/T3 is greater than or equal to 98%, 102%. Gtoreq.T 2/T4 is greater than or equal to 98%, 103%. Gtoreq.L 1/L2 is greater than or equal to 97%, the weather data of the current historical date is defined as similar data, and the historical power generation of the current date is obtained.
Further, dividing each day into multiple power generation time periods, specifically dividing the time from sunrise to sunset into 4 equal parts, and calculating the power generation amount in each time period to obtain C n Specifically, C1, C2, C3, C4, and the predicted result of the generated energy is Y according to the historical generated energy and weather forecast data n I.e. Y1, Y2, Y3, Y4, according to the formulaAnd respectively calculating, wherein k is a calibration coefficient, and the k is data obtained by human experiments and can be adjusted according to actual conditions. The calibration of the first calibration result h can be performed in the historical weather data and the historical power generation amount, namely, the known two days of data are selected for actual simulation learning, the calibration can be applied after the calibration is completed, and then the calibration is updated according to different data every day, The result of the calibrated power generation is Y n ＇=Y n ±h。
Preferably, when the historical weather data is acquired, the acquired date cannot be excessively different from the month of the current date, and the difference is controlled within one month, for example, the current month is 8 months in 2023, so that the acquired historical date can only be acquired within 7-9 months in the historical year, and the generation of error weather is avoided, so that the weather data is more accurate.
Specifically, when the power outage risk scanning of the power grid system is executed, the connection equipment in the power grid system can be bus, line, generator and other equipment. The first threshold value and the second threshold value are artificially defined data, the size of the data is obtained according to experiments, and the data can be adaptively adjusted according to actual conditions.
Specifically, when the equipment fails, the power supply range is determined according to the power supply path of the current equipment, the power supply path can be inquired in the power grid system, so that the power supply range is rapidly determined, and because the change value of the power supply quantity of the power grid system when each equipment fails is obtained in the simulation scanning process, the position and data of the failed equipment can be rapidly determined, the power failure range is rapidly determined, and whether the region where the current photovoltaic device is located has the power failure risk or not can be further obtained.
Furthermore, the power grid equipment is risk-classified according to the power supply quantity, and the equipment at the first risk level indicates that the current equipment has a wider supply chain and a large power supply range, so that when a fault occurs, although the current area where the photovoltaic device is located is possibly not covered, the large-range power-off processing is possibly performed due to the maintenance requirement, and therefore the first risk level is defined, and the power-off risk needs to be directly judged. The equipment at the second risk level is judged according to whether the equipment affects the region where the photovoltaic device is located or not, and the equipment is generally not powered off in the region due to maintenance requirements, so that the equipment is judged according to the power supply range. The third risk level equipment is generally smaller, although the power supply range affects the region where the photovoltaic device is located, the maintenance is generally faster, and the power-off time is shorter, so that after inquiring about the specific maintenance time of the power grid system, the third risk level equipment can be judged according to the actual maintenance time, if the time is longer than 4 hours, the third risk level equipment is judged to have the power-off risk, and if the time is shorter than 4 hours, the third risk level equipment is not judged to have the power-off risk.
Preferably, the number of the failed devices can be multiple, such as 2, 3, etc., and can be adaptively adjusted according to practical situations.
Further, after the power generation amount prediction result and the power failure risk are determined, power distribution is performed according to the importance level of the equipment supplied by the photovoltaic device power generation.
Specifically, when the power generation amount prediction result is smaller than or equal to the first safety value and the judgment result is any one or combination of the power failure risk, the power generation amount of the photovoltaic device is isolated and split, the power generation amount is specifically distributed according to the first proportion, and if the power generation amount prediction result is not smaller than the first safety value and the judgment result is not the combination of the power failure risk, the power generation amount of the photovoltaic device is distributed according to the second proportion.
Preferably, the prediction of the tomorrow power generation amount is accurately predicted by means of the geographic position, so that the longitude and latitude of the position of the photovoltaic system can be better known, the weather of the current region can be better observed, and meanwhile, the reference is carried out by means of the historical power generation amount, so that the prediction can be more accurate. Meanwhile, whether the power grid is subjected to power failure risk scanning is further set, whether the area where the open solar photovoltaic system is located is provided with power failure risk or not is judged, the generated energy of the photovoltaic device is allocated in advance, the situation that the equipment is not supplied with electricity and the use is affected is avoided, meanwhile, information of the photovoltaic device is supplied to the equipment, importance level evaluation is conducted on the information, daily electricity of the equipment under each importance level is obtained, important equipment can be guaranteed preferentially when the electric quantity is allocated, basic operation is guaranteed, the power failure risk and the generated energy are predicted to be combined, the daily electricity of the important equipment is combined, the generated energy of the current photovoltaic equipment can be isolated and split better, the first proportioning and the second proportioning are followed during splitting, so that the split is more scientific, the normal operation of the equipment and the guarantee capability when abnormal conditions are met are guaranteed, normal electricity consumption of residents and basic operation of the power equipment are guaranteed as much as possible, and the daily life is not affected.
Specifically, according to the historical power generation amount and in combination with weather forecast data, predicting the power generation amount of the open sun to obtain a power generation amount prediction result, and further comprising: the method for calibrating the power generation quantity comprises the steps of establishing a power generation quantity calibration model, and calibrating a power generation quantity prediction result, and specifically comprises the following steps: dividing each day into a plurality of power generation time periods, counting the power generation amount of the photovoltaic device in each power generation time period, and comparing the power generation amount with a predicted power generation amount prediction result of each power generation time period to obtain a first calibration result; and calibrating the power generation quantity prediction result according to the first calibration result.
Preferably, the generating capacity prediction result is calibrated by setting up the generating capacity calibration model, so that the generating capacity prediction result is more accurate, the subsequent generating capacity is isolated and shunted, the current distribution is more accurate, the daily division into a plurality of generating time periods is set, the generating capacity of each generating time period and each predicted generating time period is compared, the generating capacity prediction result is calibrated, the subsequent generating capacity prediction result can be calibrated by means of the first calibration result, the generating capacity prediction result is more accurate, the subsequent isolation and shunting is more accurate and more fit with the actual condition, and then the normal operation of each device and the normal electricity consumption life of residents can be better ensured.
Specifically, calibrating the power generation amount prediction result according to the first calibration result further includes: defining the generated energy of a plurality of generating time periods as C n The predicted power generation amount prediction result for each corresponding power generation period is Y n The first calibration result h is calculated according to the following formula:wherein k is a calibration coefficient, and k > 0; the calibrated power generation amount prediction result is Y n ＇=Y n ±h。
Preferably, the generated energy of a plurality of generating time periods and the generated energy prediction result of each generating time period are calculated through setting, and the first calibration result is obtained through introducing the calibration coefficient, so that the first calibration result is more fit and actual, the generated energy prediction result after subsequent calibration is more accurate, the follow-up more scientific when the generated energy is isolated and shunted is guaranteed, the place where the required electric quantity is used can be better guaranteed, and the normal operation of equipment and the normal electricity consumption of residents are guaranteed.
Specifically, obtain the operation data of electric wire netting system, carry out the scanning of outage risk to electric wire netting system, obtain the scanning result, still include: performing analog scanning on all the connected devices in the power grid system, and recording the current power supply quantity of all the connected devices as a first power supply quantity; assuming that one of the connected devices fails, counting the power supply quantity of all the connected devices as a second power supply quantity, comparing the first power supply quantity with the second power supply quantity to obtain the power supply quantity required by the current device, and recording the power supply range influenced by the current device; and judging whether the power supply range comprises the area where the photovoltaic device is located, and if so, judging that the power failure risk exists.
Preferably, the simulation scanning is performed on the equipment operated in the power grid system, when a certain equipment fails, the power supply quantity of all connected equipment and the power supply quantity of all equipment in normal operation are assumed, and further, the reduction of different power supply quantities when each equipment fails can be obtained through the comparison of the two power supply quantities, then, the equipment for transmitting the failure can be rapidly positioned when the failure is transmitted, and further, the influence range of the current equipment can be rapidly judged, so that the maintenance of the failed equipment can be conveniently performed later, the faster judgment on whether the current failed equipment can influence the power generation of the photovoltaic device is also facilitated, the normal operation of the power generation area of the photovoltaic device is ensured, a good judgment basis can be provided for the power generation quantity of the shunt photovoltaic device, the current distribution is more practical, and the power consumption of residents and the normal operation of the equipment can be better ensured.
Specifically, the required power supply amount of each device in the power grid system is recorded in an analog scanning mode, and risk grading is carried out on the power supply amount from large to small according to the size, and the method specifically comprises the following steps: when the power supply quantity of the equipment is larger than or equal to a first threshold value, defining the current equipment as a first risk level; when the power supply quantity of the equipment is smaller than the first threshold value and larger than or equal to the second threshold value, defining the current equipment as a second risk level; when the power supply quantity of the equipment is smaller than the second threshold value, defining the current equipment as a third risk level; when the equipment of the first risk level fails or the equipment of the first risk level and the equipment of the second risk level are combined to fail, directly judging that the equipment has power failure risk; when the equipment with the second risk level fails, judging whether the equipment has power failure risk or not according to the power supply range which is specifically influenced by the equipment; and when the equipment with the third risk level fails, judging the probability of power failure risk, and inquiring the power grid system to obtain specific maintenance time.
Preferably, risk grading is carried out on equipment with different power supply amounts in a power grid system, so that the equipment power supply amount is graded from large to small, when equipment with a first risk grade fails or fails together with equipment with a second risk grade, the current power failure risk is judged, at the moment, a relatively serious accident occurs to the power equipment, so that the influence is large, the power failure is judged, when equipment with the second risk grade fails, the influence range of the equipment is required to be noted for judging, and when equipment with a third risk fan fails, the large probability is small, specific maintenance time is inquired, the probability of power failure is small, such as power failure is basically repaired in a short time, and therefore the judgment of the power failure is more accurate and more practical through the division of different grades.
Specifically, the method for evaluating the importance level of the equipment supplied by the current photovoltaic device power generation, defining the importance level, acquiring the daily electricity consumption of the equipment under the corresponding importance level, and further comprises: carrying out importance level assessment according to the power supply influence of equipment supplied by each photovoltaic device power generation, and particularly dividing the power supply influence into a first importance level, a second importance level and a third importance level from large to small; the method comprises the steps of obtaining the sum of the daily electric quantity of equipment under each important grade, defining the sum of the daily electric quantity of the equipment under the first important grade as first guaranteed electric quantity, the sum of the daily electric quantity of the equipment under the second important grade as second guaranteed electric quantity, and the daily electric quantity of the equipment under the third important grade as third guaranteed electric quantity.
Preferably, the grade evaluation is carried out on the power supply influence of the equipment supplied by the photovoltaic device power generation through setting, because the equipment with large power supply influence has a large scope of coverage, the indirectly influenced equipment is more, and therefore the normal operation of the equipment needs to be guaranteed preferentially, the equipment is in a first important grade, the daily electric quantity of the equipment is the first protection electric quantity, the priority is required to be guaranteed when the equipment is isolated and split, the rest of the equipment is also divided into a plurality of important grades according to the power supply influence, the grade division is carried out through the power supply influence, the split guarantee has a priority, the operation of the most basic can be better guaranteed, the response capability and the processing capability can be improved when the abnormal condition occurs, and the normal power utilization of residents can be guaranteed as much as possible.
Specifically, according to the power generation amount prediction result, the judgment result and the daily power amount, whether the real-time power generation amount needs to be isolated, shunted and stored is judged, and the method further comprises the following steps: when the power generation quantity prediction result is smaller than or equal to the first safety value and the judgment result is any one or combination of the power failure risks, the real-time power generation quantity is judged to be required to be isolated, split and stored.
Preferably, the power generation amount is more accurately controlled by judging whether the power generation amount is smaller than the first safety value or the power failure risk is judged, so that more influences and factors can be considered, the scientificity and the laminating performance of the power generation amount are guaranteed, the power consumption of residents can be better guaranteed under abnormal conditions, and the power consumption life of residents is guaranteed.
Specifically, if the judgment is yes, controlling the real-time generated energy to enter the power grid system and the equipment power storage module according to the first proportion, and further comprising: under the first proportion, the electric quantity of the real-time generated energy entering the equipment power storage module is preferentially ensured to be larger than the first ensured electric quantity, the residual electric quantity ensures the second ensured electric quantity and the third ensured electric quantity, and the residual electric quantity enters the power grid system again; if the electric quantity entering the equipment power storage module is smaller than the first protection electric quantity under the first proportion, the use power of the equipment is reduced; and/or; and acquiring electric quantity from the power grid system.
Preferably, the current entering the electricity storage module is preferentially ensured to be larger than the first protection electric quantity under the first proportion, namely the normal electricity consumption of the equipment with the largest influence is ensured, so that the equipment cannot stop working, the electricity consumption and the electricity generation of the whole lower supply chain are indirectly influenced, the rest of the second and third protection electric quantity are ensured, the distribution of the electricity utilization guarantee is more reasonable and scientific, and meanwhile, the electricity entering the equipment electricity storage module is also arranged under the first proportion, and the use power of the equipment is reduced; and/or; and acquiring electric quantity from the power grid system, ensuring the operation of a foundation to the greatest extent, and ensuring the electricity consumption and the power supply of the foundation as much as possible, so that the electricity consumption life of residents is ensured.
Specifically, if not, controlling the real-time generated energy to enter the power grid system and the equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion, and the method comprises the following steps: under the second proportion, the sum of the first guaranteed electric quantity, the second guaranteed electric quantity and the third guaranteed electric quantity is obtained as the guaranteed total quantity, the electric quantity of the real-time generated energy entering the equipment power storage module is larger than or equal to the guaranteed total quantity, and the residual electric quantity enters the power grid system.
Preferably, under the second proportion, the obtained total guaranteed electric quantity is the total electric quantity in daily normal operation, namely, under the premise of guaranteeing normal operation, the redundant electric quantity enters the power grid system to obtain benefits, the utilization rate of generated energy is improved, and the benefits are obtained under the premise of guaranteeing basic operation, so that the whole operation environment is more practical and scientific.
[ second embodiment ]
Referring to fig. 2, the present invention further provides an isolated photovoltaic grid-connected control apparatus 100, where the isolated photovoltaic grid-connected control apparatus 100 includes:
the acquisition module 110 is used for acquiring the real-time power generation amount of the solar photovoltaic device and the power generation amount prediction result of the open sun; the method for obtaining the power generation quantity prediction result of the tomorrow specifically comprises the following steps: acquiring historical weather data of the geographic position of the current photovoltaic device; acquiring tomorrow weather forecast data of a region where a current photovoltaic device is located, searching dates with similar data in historical weather data according to weather forecast data correspondence, and acquiring historical power generation capacity of the photovoltaic device under the dates; predicting the power generation amount of the open sun according to the historical power generation amount and the weather forecast data to obtain a power generation amount prediction result; acquiring operation data of a power grid system, and scanning the power failure risk of the power grid system to obtain a scanning result; judging whether the open sun of the area where the photovoltaic device is located has a power failure risk according to the scanning result, and obtaining a judging result; the judging module 120, the judging module 120 is used for evaluating the importance level of the equipment supplied by the current photovoltaic device power generation, defining the importance level and obtaining the daily electricity consumption of the equipment under the corresponding importance level; judging whether the real-time generated energy is required to be isolated, split and stored according to the generated energy prediction result, the judgment result and the daily electric quantity; if yes, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion; if not, controlling the real-time generating capacity to enter the power grid system and the equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion.
In a specific embodiment, the obtaining module 110 and the judging module 120 are matched to implement the isolated photovoltaic grid-connected control method of the first embodiment, which is not described herein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The isolated photovoltaic grid-connected control method is characterized by comprising the following steps of:
acquiring a real-time power generation amount and a tomorrow power generation amount prediction result of a solar photovoltaic device;
the obtaining of the tomorrow power generation amount prediction result specifically comprises the following steps:
acquiring current geographic position of the photovoltaic device and historical weather data of the geographic position;
acquiring weather forecast data of the current open day of the region where the photovoltaic device is located, searching dates with similar data in the historical weather data according to the weather forecast data, and acquiring the historical power generation amount of the photovoltaic device under the dates;
Predicting the daily power generation amount according to the historical power generation amount and the weather forecast data to obtain a power generation amount prediction result;
acquiring operation data of a power grid system, and scanning the power failure risk of the power grid system to obtain a scanning result; judging whether the open sun of the area where the photovoltaic device is located has a power failure risk according to the scanning result, and obtaining a judging result;
carrying out importance level assessment on equipment supplied by the current photovoltaic device power generation, defining an importance level and acquiring daily electricity consumption of the equipment under the corresponding importance level;
judging whether the real-time generated energy is required to be isolated, split and stored according to the generated energy prediction result, the judging result and the daily electric quantity;
if yes, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion;
if not, controlling the real-time power generation amount to enter the power grid system and the equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion;
the first proportion and the second proportion are the electric quantity entering the power grid system and the electric quantity entering the equipment electricity storage module.
2. The isolated photovoltaic grid-connected control method according to claim 1, wherein the predicting the power generation amount of the open day according to the historical power generation amount and in combination with the weather forecast data to obtain the power generation amount prediction result further comprises:
establishing a power generation amount calibration model, and calibrating the power generation amount prediction result, wherein the method specifically comprises the following steps:
dividing each day into a plurality of power generation time periods, counting the power generation amount of the photovoltaic device in each power generation time period, and comparing the power generation amount with a predicted power generation amount prediction result of each power generation time period to obtain a first calibration result;
and calibrating the power generation quantity prediction result according to the first calibration result.
3. The isolated photovoltaic grid-connected control method according to claim 2, wherein the calibrating the power generation amount prediction result according to the first calibration result further comprises:
defining the power generation amount of the plurality of power generation time periods as C n The predicted power generation amount prediction result of each corresponding power generation period is Y n The first calibration result h is calculated according to the following formula:
wherein k is a calibration coefficient, and k > 0;
the power generation amount prediction result after calibration is Y n ＇=Y n ±h。
4. The isolated photovoltaic grid-connected control method according to claim 1, wherein the obtaining operation data of a power grid system, performing power failure risk scanning on the power grid system to obtain a scanning result, further comprises:
performing analog scanning on all the connecting devices in the power grid system, and recording the current power supply quantity of all the connecting devices as a first power supply quantity;
assuming that one of the connected devices fails, counting the power supply quantity of all the connected devices as a second power supply quantity, comparing the first power supply quantity with the second power supply quantity to obtain the power supply quantity required by the current device, and recording the power supply range influenced by the current device;
and judging whether the power supply range comprises the area where the photovoltaic device is located, and if so, judging that the power failure risk exists.
5. The isolated photovoltaic grid-connected control method according to claim 4, wherein,
recording the required power supply quantity of each device in the power grid system in an analog scanning mode, and carrying out risk grading on the power supply quantity from large to small according to the size, wherein the method specifically comprises the following steps of:
when the power supply quantity of the equipment is larger than or equal to a first threshold value, defining the current equipment as a first risk level;
When the power supply quantity of the equipment is smaller than the first threshold value and larger than or equal to the second threshold value, defining the current equipment as a second risk level;
when the power supply quantity of the equipment is smaller than the second threshold value, defining the current equipment as a third risk level;
when the equipment of the first risk level fails or the equipment of the first risk level and the equipment of the second risk level are combined to fail, directly judging that the equipment has power failure risk;
when the equipment with the second risk level fails, judging whether the equipment has power failure risk or not according to the power supply range which is specifically influenced by the equipment;
and when the equipment with the third risk level fails, judging the probability of power failure risk, and inquiring the power grid system to obtain specific maintenance time.
6. The isolated photovoltaic grid-connected control method according to claim 1, wherein the step of evaluating the importance level of the equipment currently supplied by the photovoltaic device for power generation, defining the importance level, and acquiring the daily electricity consumption of the equipment under the corresponding importance level further comprises:
carrying out importance level assessment according to the power supply influence of equipment supplied by power generation of each photovoltaic device, and dividing the power supply influence into a first importance level, a second importance level and a third importance level according to the power supply influence from large to small;
The method comprises the steps of obtaining the sum of the daily electric quantity of equipment under each important grade, defining the sum of the daily electric quantity of the equipment under the first important grade as first guaranteed electric quantity, the sum of the daily electric quantity of the equipment under the second important grade as second guaranteed electric quantity, and the daily electric quantity of the equipment under the third important grade as third guaranteed electric quantity.
7. The isolated photovoltaic grid-connected control method according to claim 6, wherein the determining whether the real-time power generation amount needs to be isolated and split and stored according to the power generation amount prediction result, the determination result, and the daily power consumption amount, further comprises:
and when the power generation amount prediction result is smaller than or equal to a first safety value and the judgment result is any one or combination of the power failure risks, judging that the real-time power generation amount needs to be isolated, split and stored.
8. The isolated photovoltaic grid-connected control method according to claim 7, wherein if the determination is yes, controlling the real-time power generation amount to enter a grid system and an equipment power storage module according to a first ratio, and further comprising:
under the first proportion, the electric quantity of the real-time generated energy entering the equipment power storage module is preferentially ensured to be larger than the first ensured electric quantity, the residual electric quantity ensures the second ensured electric quantity and the third ensured electric quantity, and the residual electric quantity enters the power grid system again;
If the electric quantity entering the equipment power storage module is smaller than the first protection electric quantity under the first proportion, the use power of the equipment is reduced; and/or; and acquiring electric quantity from the power grid system.
9. The isolated photovoltaic grid-connected control method according to claim 8, wherein if the judgment is no, controlling the real-time power generation amount to enter the grid system and the equipment power storage module according to a second ratio, wherein the second ratio is greater than the first ratio, and comprises:
and under the second proportion, acquiring the sum of the first guaranteed electric quantity, the second guaranteed electric quantity and the third guaranteed electric quantity as a guaranteed total quantity, and enabling the electric quantity of the real-time generated energy entering the equipment power storage module to be greater than or equal to the guaranteed total quantity, wherein the residual electric quantity enters the power grid system.
10. An isolated photovoltaic grid-connected control device, characterized in that the isolated photovoltaic grid-connected control device comprises:
the acquisition module is used for acquiring the real-time power generation amount of the solar photovoltaic device and the power generation amount prediction result of the open sun; the obtaining of the tomorrow power generation amount prediction result specifically comprises the following steps: acquiring current geographic position of the photovoltaic device and historical weather data of the geographic position; acquiring weather forecast data of the current open day of the region where the photovoltaic device is located, searching dates with similar data in the historical weather data according to the weather forecast data, and acquiring the historical power generation amount of the photovoltaic device under the dates; predicting the daily power generation amount according to the historical power generation amount and the weather forecast data to obtain a power generation amount prediction result; acquiring operation data of a power grid system, and scanning the power failure risk of the power grid system to obtain a scanning result; judging whether the open sun of the area where the photovoltaic device is located has a power failure risk according to the scanning result, and obtaining a judging result;
The judging module is used for carrying out importance level evaluation on equipment currently supplied by the photovoltaic device power generation, defining an importance level and acquiring daily electricity quantity of the equipment under the corresponding importance level; judging whether the real-time generated energy is required to be isolated, split and stored according to the generated energy prediction result, the judging result and the daily electric quantity; if yes, controlling the real-time generated energy to enter a power grid system and an equipment power storage module according to a first proportion; if not, controlling the real-time power generation amount to enter the power grid system and the equipment power storage module according to a second proportion, wherein the second proportion is larger than the first proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311464458.8A CN117220344B (en) | 2023-11-07 | 2023-11-07 | Isolated photovoltaic grid-connected control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311464458.8A CN117220344B (en) | 2023-11-07 | 2023-11-07 | Isolated photovoltaic grid-connected control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117220344A CN117220344A (en) | 2023-12-12 |
| CN117220344B true CN117220344B (en) | 2024-04-09 |
Family
ID=89037426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311464458.8A Active CN117220344B (en) | 2023-11-07 | 2023-11-07 | Isolated photovoltaic grid-connected control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117220344B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016084396A1 (en) * | 2014-11-27 | 2016-06-02 | 京セラ株式会社 | Power control device, power control method, and power control system |
| CN115333170A (en) * | 2022-10-17 | 2022-11-11 | 国网浙江省电力有限公司宁波供电公司 | Distributed power supply grid-connected scheduling method and device and power grid operation system |
| CN116436077A (en) * | 2023-04-04 | 2023-07-14 | 重庆跃达新能源有限公司 | Flexible power supply system and method based on photovoltaic energy storage |
-
2023
- 2023-11-07 CN CN202311464458.8A patent/CN117220344B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016084396A1 (en) * | 2014-11-27 | 2016-06-02 | 京セラ株式会社 | Power control device, power control method, and power control system |
| CN115333170A (en) * | 2022-10-17 | 2022-11-11 | 国网浙江省电力有限公司宁波供电公司 | Distributed power supply grid-connected scheduling method and device and power grid operation system |
| CN116436077A (en) * | 2023-04-04 | 2023-07-14 | 重庆跃达新能源有限公司 | Flexible power supply system and method based on photovoltaic energy storage |
Non-Patent Citations (1)
| Title |
|---|
| 计及光伏预测的直流微电网能量调度研究;张东 等;智慧电力;第46卷(第02期);第28-33页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117220344A (en) | 2023-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20180046924A1 (en) | Whole-life-cycle power output classification prediction system for photovoltaic systems | |
| Luther et al. | Solar photovoltaic (PV) roadmap for Singapore (A summary) | |
| Spertino et al. | Maintenance activity, reliability, availability, and related energy losses in ten operating photovoltaic systems up to 1.8 MW | |
| Yang et al. | A novel ARX-based multi-scale spatio-temporal solar power forecast model | |
| ES2426400T3 (en) | Energy network and control of it | |
| EP2537222A2 (en) | Energy generating system and control thereof | |
| CN116454951A (en) | Light energy storage control system and method | |
| CN115333170B (en) | Distributed power supply grid-connected scheduling method and device and power grid operation system | |
| CN105335560A (en) | Photovoltaic generation power volatility and automatic generation control reserve demand computing method thereof | |
| CN111612244B (en) | QRA-LSTM-based method for predicting nonparametric probability of photovoltaic power before day | |
| Malvoni et al. | Improvements in the predictions for the photovoltaic system performance of the Mediterranean regions | |
| Chung | Estimating solar insolation and power generation of photovoltaic systems using previous day weather data | |
| Haba | Monitoring solar panels using machine learning techniques | |
| Ahmed et al. | An assessment of the solar photovoltaic generation yield in Malaysia using satellite derived datasets | |
| Banguero et al. | A verification study for grid-connected 20 kW solar PV system operating in Chocó, Colombia | |
| CN110632681A (en) | Machine learning-based short-term and imminent early warning method and system for afternoon thunderstorm of power grid | |
| KR20200003490A (en) | Monitoring system for Renewable energy power plant | |
| CN111159619A (en) | Power distribution network planning method based on distributed power supply coordination mechanism | |
| CN116896063B (en) | Intelligent control method and system for power transformation and distribution | |
| CN117220344B (en) | Isolated photovoltaic grid-connected control method and device | |
| CN114386833A (en) | Elasticity evaluation and mobile energy storage regulation and control method for active power distribution network | |
| Elena et al. | Multi-agent system for smart grids with produced energy from photovoltaic energy sources | |
| Deng et al. | A survey of the researches on grid-connected solar power generation systems and power forecasting methods based on ground-based cloud atlas | |
| Ensslin et al. | Online-monitoring and prediction of wind power in german transmission system operation centres | |
| Krauter et al. | Micro-Inverters: An Update and Comparison of Conversion Efficiencies and Energy Yields |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |