A power distribution method and system for a microgrid

Abstract

The present invention relates to the technical field of microgrids, and in particular to a power distribution method and system for a microgrid. The present invention solves the problem of how to deal with the difficulty in accurately predicting electricity demand due to large changes in construction plans in an area to be constructed, which may lead to insufficient power supply. The present invention provides a power distribution method for a microgrid, comprising: obtaining the initial power supply of a main power supply circuit in the area to be constructed within a target time period; determining the construction progress of the current collection cycle according to the construction plan, and predicting the maximum power consumption of the area to be constructed in a future collection cycle according to the construction progress and the construction plan; calculating the power difference between the maximum power consumption and the initial power supply; when the power difference is less than or equal to a first adjustment threshold, supplying power through a mobile energy storage power supply; when the power difference is greater than the first adjustment threshold, obtaining the duration of the power difference, and adjusting the construction plan for the future collection cycle according to the duration and the power difference.

Description

Technical Field

[0001] The present invention relates to the technical field of microgrids, and in particular to a power distribution method and system for a microgrid. Background Art

[0002] As a flexible, reliable, and self-managing power supply system, microgrids have become an important solution for new power supply. The power infrastructure in the area to be constructed is often not yet complete, so temporary power supply solutions are needed during construction. However, due to the large variability in the work progress during the construction process, the original power supply solution may be unable to meet the new power demand, resulting in power shortages or high power pressure. Existing technologies often lack flexibility and adaptability when dealing with such dynamic changes, and are unable to effectively adjust power supply solutions to meet the ever-changing power demand during construction. Therefore, in order to ensure construction progress and safety, an efficient and flexible microgrid power distribution method is urgently needed to adapt to the fluctuations in power demand during construction. Summary of the Invention

[0003] The problem solved by the present invention is: how to deal with the problem of insufficient power supply caused by the difficulty in accurately predicting the power demand due to large changes in construction plans in the area to be built.

[0004] To solve the above problems, an embodiment of the present invention provides a power distribution method for a microgrid, which includes: the microgrid is used to supply power to the area to be constructed, obtain a construction plan for the area to be constructed within a target time period, and calculate the theoretical maximum power consumption of the area to be constructed within the target time period according to the construction plan; determine the initial power supply of the main power supply circuit of the microgrid based on the theoretical maximum power consumption; divide the target time period into multiple collection cycles, determine the construction progress of the current collection cycle according to the construction plan, and predict the maximum power consumption of the area to be constructed in the future collection cycle according to the construction progress and the construction plan; when the maximum power consumption is greater than the initial power supply, calculate the power difference between the maximum power consumption and the initial power supply; when the power difference is less than or equal to a first adjustment threshold, power the power-consuming devices in the construction plan through a mobile energy storage power supply; when the power difference is greater than the first adjustment threshold, obtain the duration of the power difference, and adjust the construction plan for the future collection cycle according to the duration and the power difference; count the number of adjustments to the construction plan within the target time period, and adjust the initial power supply according to the number of adjustments.

[0005] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the construction plan directly affects the electricity demand. By analyzing the construction plan, the electricity consumption of the power-consuming equipment in the target time period can be predicted, so as to better adjust the power supply strategy. The calculation of the theoretical maximum power consumption fully takes into account the power demand and usage time of each power-consuming equipment in the construction plan, so that the initial power supply of the microgrid can be reasonably determined according to the theoretical maximum power consumption to ensure that the initial power supply of the microgrid can meet the electricity demand during the peak period of electricity consumption in the construction plan, avoiding the impact of insufficient power supply on the construction progress. By decomposing the target time period into multiple collection cycles, the construction process can be monitored and managed more carefully. The electricity demand changes during the process can be detected in time to identify problems and make adjustments. The acquisition of construction progress in the current collection cycle is helpful to judge the electricity demand in the future collection cycle, so as to more accurately and reasonably predict the maximum power consumption. The maximum power consumption can help understand the future maximum power demand and judge whether there is sufficient power supply in the future collection cycle. The setting of the first adjustment threshold and the power difference can select the appropriate processing method when power resources are tight. The stability of power supply and demand can be determined by the duration, and the adjustment content of the construction plan can be minimized. By analyzing the number of adjustments, it can be effectively evaluated whether the arrangement of the construction plan and the setting of the initial power supply capacity are reasonable.

[0006] In one embodiment of the present invention, a microgrid is used to supply power to an area to be constructed, obtain a construction plan for the area to be constructed within a target time period, and calculate the theoretical maximum power consumption of the area to be constructed within the target time period based on the construction plan, specifically including: determining the theoretical working time period of each power-consuming device within the target time period based on the construction plan; obtaining the output power and operating time of the power-consuming device within the same theoretical working time period, and determining the theoretical power consumption based on the output power and operating time; and selecting the maximum value of the theoretical power consumption as the theoretical maximum power consumption of the area to be constructed within the target time period.

[0007] Compared with the existing technology, the technical effects achieved by adopting this technical solution are as follows: the theoretical working time period reflects the expected usage time period of each power-consuming equipment, which helps to reasonably calculate the theoretical power consumption of each power-consuming equipment; the output power determines the power that can be consumed by the power-consuming equipment under normal operating conditions, and is the basic factor for calculating the theoretical power consumption; the combination of operating time and output power can more accurately estimate the theoretical power consumption of each power-consuming equipment; the theoretical power consumption reflects the power consumption of the area to be constructed within the target time period, and provides data support for the calculation of the theoretical maximum power consumption.

[0008] In one embodiment of the present invention, the initial power supply of the main power supply circuit of the microgrid is determined based on the theoretical maximum power consumption, specifically including: obtaining the first power generation of the photovoltaic panel within the target time period based on the weather forecast; calculating the total power of the first power generation and the theoretical maximum power consumption, and recording the total power as the initial power supply.

[0009] Compared with the existing technology, the technical effects achieved by adopting this technical solution are: first, the calculation of power generation takes into account the power supply of the photovoltaic system within the target time period, which helps to more accurately and reasonably predict the initial power supply capacity of the microgrid.

[0010] In one embodiment of the present invention, the target time period is divided into multiple collection cycles, the construction progress of the current collection cycle is determined according to the construction plan, and the maximum power consumption of the area to be constructed in the future collection cycle is predicted according to the construction progress and the construction plan, specifically including: dividing the target time period into multiple collection cycles according to equal time intervals; recording the collection cycle of the ongoing construction plan as the current collection cycle, and recording the collection cycle after the current collection cycle as the future collection cycle; at the end of the current collection cycle, judging the completion rate of the current collection cycle according to the construction progress, determining the power-consuming equipment that needs to extend the working time according to the completion rate, and recording it as the overtime equipment; calculating the expected working time of the overtime equipment in the future collection cycle according to the completion rate; and predicting the maximum power consumption of the area to be constructed in the future collection cycle according to the expected working time and the construction plan.

[0011] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: by dividing the time intervals into equal intervals, it ensures that each collection cycle has a consistent time length, making the monitoring of construction progress and power demand more accurate and effective. The completion rate provides a quantitative assessment of the construction progress, enabling staff to understand the actual progress of the construction plan in a timely manner, helping to promptly identify possible delays or problems in the construction. The calculation of the expected working time can determine the impact of overtime equipment on the power consumption of future collection cycles, further improving the accuracy of the maximum power consumption to ensure the smooth progress of the construction plan.

[0012] In one embodiment of the present invention, the maximum power consumption of the area to be constructed in a future collection cycle is predicted based on the expected working time and the construction plan, specifically including: determining the overlapping time period of the expected working time and the future collection cycle based on the extended working time; obtaining the power-consuming equipment working in the overlapping time period in the future collection cycle according to the construction plan, and recording it as the target equipment; obtaining the unit power of the timeout equipment, and calculating the peak power consumption of the overlapping time period in the future collection cycle according to the unit power and the output power of the target equipment; obtaining the expected maximum power consumption in the future collection cycle according to the construction plan, when the peak power consumption is greater than the expected maximum power consumption, the peak power consumption is the maximum power consumption; when the peak power consumption is less than or equal to the expected maximum power consumption, the power-consuming equipment is powered by the main supply circuit.

[0013] Compared with the existing technology, the technical effects achieved by adopting this technical solution are: the identification and determination of the overlapping time period helps the staff to discover the potential peak of electricity demand in advance, facilitates timely prevention measures, and ensures sufficient power support in the subsequent construction stage. The identification of target equipment can clearly understand the source of electricity consumption in the overlapping time period, making the prediction of the maximum power consumption more accurate. The calculation of peak power consumption helps to timely predict the power demand in the overlapping time period and ensure the stability of power supply. By comparing the peak power consumption with the expected maximum power consumption, the maximum power consumption can be reasonably determined so that the power supply strategy can be adjusted in time.

[0014] In one embodiment of the present invention, when the power difference is greater than a first adjustment threshold, the duration of the power difference is obtained, and the construction plan of the future collection period is adjusted according to the duration and the power difference, specifically including: setting the first adjustment threshold according to the initial power supply; when the power difference exceeds the first adjustment threshold with an upward trend, the time point when the power difference is equal to the first adjustment threshold is recorded as the first turning point; when the power difference breaks through the first adjustment threshold with a downward trend, the time point when the power difference is equal to the first adjustment threshold is recorded as the second turning point; determining the initial time point and the end time point according to the time length of the future collection period, and calculating the duration according to the initial time point, the end time point, the first turning point and the second turning point; adjusting the construction plan of the future collection period according to the duration and the power difference.

[0015] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: through the identification of the first turning point and the second turning point, it can help staff to timely discover the changing trend of the power difference, so as to make a quick response during the construction process and avoid construction delays caused by power shortages. The length of time that the power difference exceeds the first adjustment threshold is calculated by the duration. In the case of tight power supply, the duration can be used to more accurately judge whether it is necessary to adjust the construction plan to ensure the stability of the power supply.

[0016] In one embodiment of the present invention, the construction plan of the future collection period is adjusted according to the duration and the power difference, specifically including: setting an overload time threshold according to the conductor material and service life of the main supply circuit; when the power difference is greater than the first adjustment threshold and the duration is less than the overload time threshold, the power-consuming equipment can be powered by a mobile energy storage power supply; when the power difference is greater than the first adjustment threshold and the duration is greater than or equal to the overload time threshold, the construction plan is adjusted according to the power difference.

[0017] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the setting of the overload time threshold takes into account the conductor material and service life of the main power supply circuit, so that the staff can more reasonably and accurately evaluate the safe overload time of the main power supply circuit overload operation based on the current carrying capacity and aging degree of the conductor.

[0018] In one embodiment of the present invention, the number of adjustments to the construction plan within the target time period is counted, and the initial power supply is adjusted according to the number of adjustments, specifically including: setting a second adjustment threshold, counting the number of adjustments to the construction plan within the target time period; when the number of adjustments is less than the second adjustment threshold, maintaining the initial power supply unchanged; when the number of adjustments is greater than or equal to the second adjustment threshold, setting a first correction coefficient according to the number of adjustments; and adjusting the initial power supply according to the first correction coefficient.

[0019] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the second adjustment threshold serves as the upper limit of the number of adjustments, which can help staff determine whether there is a problem with the setting of the initial power supply, thereby reducing the risk of insufficient power supply during construction. The setting of the first correction coefficient fully considers the impact of the number of adjustments on the initial power supply, ensuring that the adjusted power supply can meet the needs of the adjusted construction plan.

[0020] In one embodiment of the present invention, a microgrid distribution system is also provided. The microgrid distribution method recorded in the above embodiment is applied to the distribution system, and the distribution system includes: a detection module, the detection module is used to detect the construction progress of the current acquisition cycle; a calculation module, the calculation module is used to calculate the power difference; a judgment module, the judgment module is used to judge the size of the power difference and the first adjustment threshold; a storage module, the storage module is used to store the construction plan of the area to be constructed within the target time period. The distribution system has all the technical features of the above distribution method, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 One of the flow charts of a power distribution method for a microgrid;

[0022] Figure 2 This is a second flow chart of a power distribution method for a microgrid;

[0023] Figure 3 This is a third flow chart of a power distribution method for a microgrid;

[0024] Figure 4 This is a fourth flow chart of a power distribution method for a microgrid;

[0025] Figure 5 A schematic diagram of a power distribution system of a microgrid;

[0026] Description of reference numerals:

[0027] 100 - power distribution system; 110 - detection module; 120 - calculation module; 130 - judgment module; 140 - storage module. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] [First embodiment]

[0030] See also Figure 1 In a specific embodiment, the present invention provides a power distribution method for a microgrid, the power distribution method comprising:

[0031] S100: The microgrid is used to supply power to the area to be constructed, obtain a construction plan for the area to be constructed within a target time period, and calculate a theoretical maximum power consumption of the area to be constructed within the target time period based on the construction plan;

[0032] S200, determining the initial power supply of the main power supply circuit of the microgrid based on the theoretical maximum power consumption;

[0033] S300: Divide the target time period into multiple collection cycles, determine the construction progress of the current collection cycle according to the construction plan, and predict the maximum power consumption of the area to be constructed in the future collection cycles based on the construction progress and the construction plan;

[0034] S400, when the maximum power consumption is greater than the initial power supply, calculating the power difference based on the maximum power consumption and the initial power supply;

[0035] S500: When the power difference is less than or equal to the first adjustment threshold, power the power-consuming equipment in the construction plan through the mobile energy storage power supply;

[0036] S600: When the power difference is greater than the first adjustment threshold, obtain the duration of the power difference, and adjust the construction plan for the future collection period according to the duration and the power difference;

[0037] S700: Count the number of times the construction plan is adjusted within the target time period, and adjust the initial power supply according to the number of times.

[0038] In step S100, the area to be constructed refers to a specific geographical area that is under construction or has not yet been fully built, including a construction site, a scientific research facility project or other development project site. The target time period refers to a specific time range for construction in the area to be constructed. During this time range, only the microgrid is usually used for power supply. The construction plan refers to the specific construction arrangement of the area to be constructed within the target time period.

[0039] It should be noted that in some construction areas, the construction of project-related power infrastructure has not been completed, resulting in insufficient power resources available for construction projects. For example, in the early stages of construction, the construction of relevant power infrastructure has not been completed, which limits the ability to supply power in parallel, resulting in the construction plan relying on a single circuit for power supply. However, in order to complete the construction project as soon as possible, construction will usually not start until the power infrastructure is completed. In the subsequent construction stage, as the construction plan progresses, other supporting facilities will be gradually constructed accordingly.

[0040] In step S200, the theoretical maximum power consumption refers to the maximum power consumption value required for the construction area within the target time period, which is estimated according to the construction plan. The initial power supply is the preliminary power supply capacity of the main power supply circuit determined based on the theoretical maximum power consumption. Usually, the initial power supply should be greater than or equal to the theoretical maximum power consumption to ensure the smooth progress of construction activities.

[0041] In step S300, the collection period refers to the period of time during which the electricity demand and construction progress of the area to be constructed are monitored and data collected within the target time period. The collection period is usually 1 to 4 hours, preferably 1.5 hours, 2 hours, and 2.5 hours. The construction progress refers to the degree of completion of the construction plan of the area to be constructed within the current collection period. The maximum power consumption refers to the maximum electricity demand that may be reached by the area to be constructed within the future collection period.

[0042] In step S500, the first adjustment threshold refers to an upper limit of a power difference set in the microgrid, and its value range is usually affected by the initial power supply, generally 40% to 60% of the initial power supply, preferably 40%, 45% and 50%. The mobile energy storage power supply refers to a movable power storage device, usually composed of a battery pack, which can provide power support at the construction site or other areas requiring temporary power supply. The power of the mobile energy storage power supply is usually 20% to 50% of the maximum power consumption of the area to be constructed, preferably 20%, 30% and 35%. Power-consuming equipment refers to various equipment and tools that require power supply during the construction process, including power tools, lighting equipment and construction machinery.

[0043] In step S600 , the duration refers to the sum of the lengths of time during which the power difference value is continuously higher than the first adjustment threshold value in a future collection period.

[0044] In step S700, the number of adjustments refers to the number of times the construction plan is modified or adjusted during the target time period due to changes in the power difference caused by changes in the construction progress. After each adjustment, the number of adjustments is recorded as 1. The adjustment of the previous collection cycle on the same day will usually affect the construction plan of the next collection cycle. Therefore, multiple adjustments in adjacent collection cycles on the same day are regarded as 1. In addition, in order to avoid affecting the construction plan of the next day, it is necessary to ensure that the completion rate of the day meets the requirements of the original construction plan.

[0045] The construction plan directly affects electricity demand. By analyzing the construction plan, the power consumption of power-consuming devices within the target time period can be predicted, thereby better adjusting the power supply strategy. The calculation of the theoretical maximum power consumption fully considers the power demand and usage time of each power-consuming device in the construction plan. Therefore, the initial power supply of the microgrid can be reasonably determined based on the theoretical maximum power consumption to ensure that the initial power supply of the microgrid can meet the power demand during the peak power consumption period in the construction plan and avoid the impact of insufficient power supply on the construction progress. Breaking down the target time period into multiple collection cycles can more carefully monitor and manage changes in power demand during the construction process, so as to promptly identify problems and make adjustments. Acquiring the construction progress within the current collection cycle helps to determine the power demand in the future collection cycle, thereby more accurately and reasonably predicting the maximum power consumption. The maximum power consumption can help understand the future maximum power demand and determine whether there is sufficient power supply in the future collection cycle. The setting of the first adjustment threshold and the power difference can select the appropriate treatment method when power resources are tight. The stability of power supply and demand is determined by the duration, minimizing the adjustment content of the construction plan. By analyzing the number of adjustments, the reasonableness of the construction plan arrangement and the setting of the initial power supply capacity can be effectively evaluated.

[0046] [Second embodiment]

[0047] See also Figure 1 In a specific embodiment, the microgrid is used to supply power to the area to be constructed, obtain a construction plan for the area to be constructed within a target time period, and calculate the theoretical maximum power consumption of the area to be constructed within the target time period based on the construction plan, specifically including:

[0048] S110, determining the theoretical working time period of each power-consuming device within the target time period according to the construction plan;

[0049] S120, obtaining the output power and operating time of the power-consuming device within the same theoretical working time period, and determining the theoretical power consumption based on the output power and operating time;

[0050] S130: Select the maximum value of the theoretical power consumption as the theoretical maximum power consumption of the area to be constructed within the target time period.

[0051] In steps S110 to S130, the theoretical working time period refers to the scheduled working time period of each power-consuming device in the construction plan within the target time period, the output power refers to the rated power of each power-consuming device within the same theoretical working time period, the running time refers to the time length from the start of operation to the end of operation of each power-consuming device within the same theoretical working time period, and the theoretical power consumption W t It refers to the running time t r The power consumption of each power-consuming device is W when it is continuously running at its output power P1. t The calculation formula is as follows:

[0052] W t = P1× t r .

[0053] The theoretical working time period reflects the expected usage time period of each power-consuming device, which helps to reasonably calculate the theoretical power consumption of each power-consuming device. The output power determines the power that can be consumed by the power-consuming device under normal operating conditions and is the basic factor for calculating the theoretical power consumption. The combination of operating time and output power can more accurately estimate the theoretical power consumption of each power-consuming device. The theoretical power consumption reflects the power consumption of the area to be constructed during the target time period, providing data support for the calculation of the theoretical maximum power consumption.

[0054] [Third embodiment]

[0055] See also Figure 1 In a specific embodiment, determining the initial power supply of the main power supply circuit of the microgrid based on the theoretical maximum power consumption specifically includes:

[0056] S210, obtaining a first power generation amount of the photovoltaic panel within a target time period according to the weather forecast;

[0057] S220: Calculate the total power of the first power generation and the theoretical maximum power consumption, and record the total power as the initial power supply.

[0058] In step S210 and step S220, the first power generation refers to the total amount of electric energy that can be generated by the photovoltaic panel according to the expected sunshine conditions within the target time period. The calculation formula of the first power generation W1 is:

[0059] W1=P2×t1×η.

[0060] Where P2 is the rated power of the photovoltaic panel in kW, t1 is the expected effective sunshine time in h, and η is the conversion efficiency, usually expressed as a percentage.

[0061] Initial power supply W i The theoretical maximum power consumption W m The sum of the first power generation W1 is calculated as follows:

[0062] W i =W m +W1.

[0063] The calculation of the first power generation takes into account the power supply of the photovoltaic system within the target time period, which helps to more accurately and reasonably predict the initial power supply capacity of the microgrid.

[0064] [Fourth embodiment]

[0065] See also Figure 2 In a specific embodiment, the target time period is divided into multiple collection cycles, the construction progress of the current collection cycle is determined according to the construction plan, and the maximum power consumption of the construction area in the future collection cycle is predicted based on the construction progress and the construction plan, specifically including:

[0066] S310, dividing the target time period into multiple collection periods at equal time intervals;

[0067] S320: Record the collection period of the ongoing construction plan as the current collection period, and record the collection period after the current collection period as the future collection period;

[0068] S330: At the end of the current collection cycle, the completion rate of the current collection cycle is determined based on the construction progress, and the power-consuming devices that need to extend their working time are determined based on the completion rate and recorded as overtime devices;

[0069] S340, calculating the estimated working time of the timeout device in the future collection cycle based on the completion rate;

[0070] S350: Predict the maximum power consumption of the area to be constructed in a future collection cycle based on the expected working hours and the construction plan.

[0071] In step S310 and step S320 , the equal time interval means that when the target time period is divided into multiple collection cycles, the duration of each collection cycle is equal.

[0072] For example, when the target time period is 8 hours and the time intervals are equal and are all 2 hours, the target time period can be divided into 4 collection cycles, and the duration of each collection cycle is 2 hours.

[0073] In steps S330 to S350, the completion rate refers to the ratio of the completed construction progress in the current collection cycle to the original construction progress planned by the construction plan. The overtime equipment refers to the power-consuming equipment that fails to complete the work within the expected time due to technical problems or insufficient human resources at the end of the current collection cycle and needs to extend its working time. The expected working time refers to the additional working time required for the overtime equipment to complete the remaining tasks in the future collection cycle based on the completion rate of the current collection cycle and the construction plan.

[0074] It should be noted that when the overdue equipment will affect the subsequent construction plan, the difference in power consumption when the two power-consuming equipment are in use should be considered when calculating the maximum power consumption. When the overdue equipment will not affect the subsequent construction plan, the power consumption of the overdue equipment can be directly calculated.

[0075] By dividing the data into equal time intervals, ensuring that each collection cycle has a consistent length, the monitoring of construction progress and power demand is more accurate and effective. The completion rate provides a quantitative assessment of construction progress, allowing staff to promptly understand the actual progress of the construction plan and help to promptly identify potential delays or problems in construction. The calculation of the expected working time can determine the impact of overtime equipment on the power consumption of future collection cycles, further improving the accuracy of the maximum power consumption to ensure the smooth progress of the construction plan.

[0076] [Fifth embodiment]

[0077] See also Figure 2 In a specific embodiment, the maximum power consumption of the area to be constructed in the future collection period is predicted based on the expected working hours and the construction plan, specifically including:

[0078] S351. Determine the time period of overlap between the expected working hours and the future collection period based on the extended working hours;

[0079] S352. According to the construction plan, obtain the power-consuming devices operating in the overlapping time period in the future collection cycle and record them as target devices;

[0080] S353. Obtain the unit power of the timed-out device, and calculate the peak power consumption of the overlapping time period in the future collection cycle based on the unit power and the output power of the target device;

[0081] S354. According to the construction plan, obtain the expected maximum power consumption in the future collection period. When the peak power consumption is greater than the expected maximum power consumption, the peak power consumption is the maximum power consumption.

[0082] S355. When the peak power consumption is less than or equal to the expected maximum power consumption, power is supplied to the power-consuming devices through the main power supply circuit.

[0083] In steps S351 to S355, the overlap time period refers to the intersection time period between the expected working time of the overdue equipment and the working time scheduled in the construction plan in the future collection cycle. During this time period, the unfinished construction progress of the current collection cycle and the construction progress scheduled in the construction plan in the future collection cycle will be carried out simultaneously, which may lead to an increase in power demand. According to the construction plan in the future collection cycle, the power-consuming equipment that will be operated in the overlap time period is determined to be the target equipment. The unit power refers to the rated power of the overdue equipment under normal operating conditions. The peak power consumption refers to the maximum power consumption in the overlap time period calculated based on the power demand of the target equipment and the overdue equipment. The expected maximum power consumption refers to the maximum power consumption predicted according to the construction plan in the future collection cycle. The calculation formula of the peak power consumption W2 is:

[0084] W2=(P t +P e )×t2.

[0085] Among them, P t is the output power of the target device in kW, P e is the unit power of the timeout device in kW, and t2 is the duration of the overlap period in hours.

[0086] For example, if a device with a timeout needs to complete 4% of its work between 13:00 and 15:00 in the current collection cycle, but due to insufficient operator skills, the device only completes 3% of its work within 2 hours. The remaining 1% of the work requires the device to continue working for 30 minutes. If the future collection cycle is 15:00-17:00, and the time period during which the device with a timeout continues to work for 30 minutes is 15:30-16:00, the overlapping time period is 15:30-16:00. According to the construction plan, the output power of the target device in the overlapping time period is 8 kW, and the unit power of the device with a timeout is 4 kW. The calculated peak power consumption is 6 kW·h. If the expected maximum power consumption during the future collection cycle of 15:00-17:00 is 2 kW·h, the maximum power consumption is the peak power consumption, which is 6 kW·h.

[0087] The identification and determination of overlapping time periods helps workers discover potential peaks in electricity demand in advance, facilitates timely preventive measures, and ensures sufficient power support in the subsequent construction phase. The identification of target equipment can clearly understand the source of electricity consumption during the overlapping time period, making the prediction of maximum power consumption more accurate. The calculation of peak power consumption helps to timely predict the power demand during the overlapping time period and ensure the stability of power supply. By comparing the peak power consumption with the expected maximum power consumption, the maximum power consumption can be reasonably determined so that the power supply strategy can be adjusted in time.

[0088] [Sixth embodiment]

[0089] See also Figure 3 In a specific embodiment, when the power difference is greater than a first adjustment threshold, the duration of the power difference is obtained, and the construction plan of the future collection period is adjusted according to the duration and the power difference, specifically including:

[0090] S610, setting a first adjustment threshold according to the initial power supply;

[0091] S620: When the power difference exceeds the first adjustment threshold with an upward trend, the time point when the power difference equals the first adjustment threshold is recorded as a first turning point;

[0092] S630: When the power difference breaks through the first adjustment threshold with a downward trend, the time point when the power difference equals the first adjustment threshold is recorded as a second turning point;

[0093] S640: Determine an initial time point and an end time point based on the length of the future acquisition cycle, and calculate the duration based on the initial time point, the end time point, the first turning point, and the second turning point;

[0094] S650. Adjust the construction plan for the future collection cycle according to the duration and the power difference.

[0095] In steps S610 to S630, the first turning point refers to the time point when the power difference reaches the first adjustment threshold during the process of the power difference changing from low to high until it exceeds the first adjustment threshold, and the second turning point refers to the time point when the power difference drops from high to low and falls below the first adjustment threshold.

[0096] In step S640, the time difference between the first turning point and the second turning point adjacent thereto in the time axis direction within the target time period is calculated. , duration t d That is the time difference The sum is calculated as follows:

[0097] .

[0098] It should be noted that when the initial time point of the future acquisition period is greater than or equal to the first adjustment threshold and the end time point is less than the first adjustment threshold, the initial time point is recorded as the first turning point; when the initial time point is greater than the first adjustment threshold and the end time point is greater than the first adjustment threshold, the initial time point is recorded as the first turning point and the end time point is recorded as the second turning point; when the initial time point is less than or equal to the first adjustment threshold and the end time point is less than the first adjustment threshold, the first turning point and the second turning point are obtained according to the method of step S620 and step S620; when the initial time point is less than or equal to the first adjustment threshold and the end time point is greater than the first adjustment threshold, the end time point is recorded as the second turning point.

[0099] By identifying the first turning point and the second turning point, workers can promptly discover the changing trend of the power difference so that they can respond quickly during the construction process and avoid construction delays caused by power shortages. The duration of time the power difference exceeds the first adjustment threshold is calculated. In the case of tight power supply, the duration can be used to more accurately determine whether it is necessary to adjust the construction plan to ensure the stability of the power supply.

[0100] [Seventh embodiment]

[0101] See also Figure 3 In a specific embodiment, adjusting the construction plan of the future collection period according to the duration and the power difference specifically includes:

[0102] S651. Set an overload time threshold based on the conductor material and service life of the main power supply circuit;

[0103] S652: When the power difference is greater than the first adjustment threshold and the duration is less than the overload time threshold, the power consuming device may be powered by the mobile energy storage power supply;

[0104] S653: When the power difference is greater than the first adjustment threshold and the duration is greater than or equal to the overload time threshold, adjust the construction plan according to the power difference.

[0105] In steps S651 to S653, the conductor material refers to the material used for the conductor used to transmit current in the main power supply circuit, such as copper and aluminum. The overload time threshold refers to the maximum duration that the main power supply circuit can safely withstand an overload state. Within the overload time threshold, although the current of the main power supply circuit exceeds its rated current load, the main power supply circuit can still operate safely. The calculation formula of the overload time threshold t3 is as follows:

[0106] When the conductor material is copper and the service life is 3 years or less, 1h≤t3≤2h;

[0107] When the conductor material is aluminum and the service life is 3 years or less, 0.5h≤t3≤1h;

[0108] When the conductor material is copper and the service life is more than 3 years, 0.5h≤t3≤1h;

[0109] When the conductor material is aluminum, the service life is more than 3 years and 0.25h≤t3≤0.5h.

[0110] For example, when the initial power supply is 4kW·h, the first adjustment threshold is 1.6kW·h, the maximum power consumption is 6kW·h, and the power of the mobile energy storage power supply is 1.2kW·h, the power difference is 2kW·h, and the power difference is greater than the first adjustment threshold. The conductor material is copper, the service life is 3 years or less, and the duration of the main supply circuit is 1 hour. In this case, the mobile energy storage power supply is used for power supply. During the power supply process of the mobile energy storage power supply, the power difference will be appropriately reduced, which is recorded as the corrected power difference. When the predicted duration of the main supply circuit is 2.3 hours, the construction plan can be adjusted according to the corrected power difference.

[0111] The overload time threshold is set based on the conductor material and age of the main power supply circuit, allowing staff to more reasonably and accurately assess the safe overload time for overload operation of the main power supply circuit based on the conductor's current carrying capacity and degree of aging.

[0112] [Eighth embodiment]

[0113] See also Figure 4 In a specific embodiment, the number of times the construction plan is adjusted within the target time period is counted, and the initial power supply is adjusted according to the number of adjustments, specifically including:

[0114] S710: Set a second adjustment threshold and count the number of construction plan adjustments within the target time period;

[0115] S720: When the number of adjustments is less than the second adjustment threshold, maintain the initial power supply unchanged;

[0116] S730: When the number of adjustments is greater than or equal to the second adjustment threshold, set a first correction coefficient according to the number of adjustments;

[0117] S740: Adjust the initial power supply according to the first correction coefficient.

[0118] In steps S710 to S740, the second adjustment threshold refers to the upper limit of the number of times the construction plan can be adjusted within the target time period. The second adjustment threshold N is usually 1 to 3 times. The first correction coefficient is a coefficient set according to the actual number of times the construction plan can be adjusted within the target time period. It is used to adjust the initial power supply. The calculation formula of the first correction coefficient k1 is as follows:

[0119] N=1 times, k1=1.0;

[0120] N = 2 times, k1 = 1.2;

[0121] N≥3 times, k1=1.5.

[0122] It should be noted that the number of adjustments is used to monitor and evaluate the rationality of the initial power supply setting and the stability of the construction plan. When the number of adjustments is large, it means that the initial power supply set according to the theoretical maximum power consumption of the power-consuming equipment is unreasonable and cannot meet the actual construction needs.

[0123] For example, when the number of adjustments is 3, the initial power supply is 4 kW·h, and the first correction coefficient is 1.5, then the adjusted initial power supply can be calculated to be 6 kW·h.

[0124] The second adjustment threshold, as the upper limit of the number of adjustments, can help staff determine whether there is a problem with the initial power supply setting, thereby reducing the risk of insufficient power supply during construction. The setting of the first correction coefficient fully considers the impact of the number of adjustments on the initial power supply, ensuring that the adjusted power supply can meet the needs of the construction plan.

[0125] Ninth embodiment

[0126] See also Figure 5 In one embodiment of the present invention, a microgrid power distribution system 100 is further provided. The microgrid power distribution method described in the above embodiment is applied to the power distribution system 100. The power distribution system 100 includes: a detection module 110, the detection module 110 is used to detect the construction progress of the current collection cycle; a calculation module 120, the calculation module 120 is used to calculate the power difference; a judgment module 130, the judgment module 130 is used to judge the size of the power difference and the first adjustment threshold; a storage module 140, the storage module 140 is used to store the construction plan of the area to be constructed within the target time period. The power distribution system has all the technical features of the above-mentioned power distribution method, which will not be described in detail here.

[0127] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A power distribution method for a microgrid, characterized in that: The power distribution method comprises: The microgrid is used to supply power to the area to be constructed, obtain a construction plan for the area to be constructed within a target time period, and calculate a theoretical maximum power consumption of the area to be constructed within the target time period based on the construction plan; Determining the initial power supply of the main power supply circuit of the microgrid according to the theoretical maximum power consumption; Dividing the target time period into multiple collection cycles, determining the construction progress of the current collection cycle according to the construction plan, and predicting the maximum power consumption of the area to be constructed in the future collection cycle according to the construction progress and the construction plan; When the maximum power consumption is greater than the initial power supply, calculating the power difference according to the maximum power consumption and the initial power supply; When the power difference is less than or equal to a first adjustment threshold, powering the power-consuming equipment in the construction plan through a mobile energy storage power supply; setting the first adjustment threshold according to the initial power supply amount; When the power difference exceeds the first adjustment threshold with an upward trend, the time point when the power difference is equal to the first adjustment threshold is recorded as a first turning point; When the power difference breaks through the first adjustment threshold in a downward trend, the time point when the power difference equals the first adjustment threshold is recorded as a second turning point; Determine an initial time point and an end time point according to the time length of the future acquisition period, and calculate the duration according to the initial time point, the end time point, the first turning point, and the second turning point; Adjust the construction plan of the future collection period according to the duration and the power difference; The number of times the construction plan is adjusted within the target time period is counted, and the initial power supply is adjusted according to the number of adjustments.

2. The power distribution method of the microgrid according to claim 1, characterized in that: The microgrid is used to supply power to the area to be constructed, obtain a construction plan for the area to be constructed within a target time period, and calculate the theoretical maximum power consumption of the area to be constructed within the target time period based on the construction plan, specifically including: Determine the theoretical working time period of each power-consuming device within the target time period according to the construction plan; Obtaining the output power and operating time of each of the power-consuming devices within the same theoretical working time period, and determining the theoretical power consumption based on the output power and the operating time; The maximum value of the theoretical power consumption is selected as the theoretical maximum power consumption of the area to be constructed within the target time period.

3. The power distribution method of the microgrid according to claim 2, characterized in that: Determining the initial power supply capacity of the main power supply circuit of the microgrid according to the theoretical maximum power consumption specifically includes: Obtaining a first power generation amount of the photovoltaic panel within the target time period according to the weather forecast; The total amount of the first power generation amount and the theoretical maximum power consumption is calculated, and the total amount of power is recorded as the initial power supply amount.

4. The power distribution method of the microgrid according to claim 3, characterized in that: The step of dividing the target time period into a plurality of collection cycles, determining the construction progress of the current collection cycle according to the construction plan, and predicting the maximum power consumption of the area to be constructed in a future collection cycle according to the construction progress and the construction plan specifically includes: Dividing the target time period into a plurality of acquisition cycles at equal time intervals; Recording the collection period during which the construction plan is being implemented as the current collection period, and recording the collection period after the current collection period as the future collection period; When the current collection cycle ends, the completion rate of the current collection cycle is determined according to the construction progress, and the power-consuming devices that need to extend their working time are determined according to the completion rate and recorded as overtime devices; Calculating the expected working time of the timed-out device in the future collection cycle according to the completion rate; The maximum power consumption of the area to be constructed in a future collection cycle is predicted based on the expected working time and the construction plan.

5. The power distribution method of the microgrid according to claim 4, characterized in that: The predicting of the maximum power consumption of the area to be constructed in a future collection period based on the expected working time and the construction plan specifically includes: Determining the overlapping time period between the estimated working time and the future collection period according to the extended working time; According to the construction plan, the power-consuming devices operating in the overlapping time period during the future collection week are obtained and recorded as target devices; Obtaining the unit power of the timed-out device, and calculating the peak power consumption of the overlapping time period in the future collection cycle based on the unit power and the output power of the target device; According to the construction plan, an expected maximum power consumption in a future collection period is obtained. When the peak power consumption is greater than the expected maximum power consumption, the peak power consumption is the maximum power consumption. When the peak power consumption is less than or equal to the expected maximum power consumption, the power consuming device is powered by the main power supply circuit.

6. The power distribution method of the microgrid according to claim 5, characterized in that: The adjusting the construction plan of the future collection period according to the duration and the power difference specifically includes: Setting an overload time threshold according to the conductor material and service life of the main power circuit; When the power difference is greater than the first adjustment threshold and the duration is less than the overload time threshold, the power consuming device may be powered by the mobile energy storage power supply; When the power difference is greater than the first adjustment threshold and the duration is greater than or equal to the overload time threshold, the construction plan is adjusted according to the power difference.

7. The power distribution method of the microgrid according to claim 6, characterized in that: The counting of the number of times the construction plan is adjusted within the target time period, and adjusting the initial power supply according to the number of times the construction plan is adjusted, specifically includes: Setting a second adjustment threshold and counting the number of adjustments to the construction plan within the target time period; When the number of adjustments is less than the second adjustment threshold, maintaining the initial power supply unchanged; When the number of adjustments is greater than or equal to the second adjustment threshold, setting a first correction coefficient according to the number of adjustments; The initial power supply amount is adjusted according to the first correction coefficient.

8. A power distribution system for a microgrid, characterized in that: The power distribution method of a microgrid according to any one of claims 1 to 7 is applied to the power distribution system, wherein the power distribution system comprises: A detection module, the detection module is used to detect the construction progress of the current collection cycle; A calculation module, configured to calculate the power difference; a judgment module, configured to judge a difference between the power difference and the first adjustment threshold; A storage module is used to store the construction plan of the area to be constructed within a target time period.

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