Power Scheduling Method

Abstract

The present application relates to a power dispatching method, which first receives a power dispatching instruction sent by a host computer, generates a corresponding demand power-time curve for the received power dispatching instruction, then cuts the demand power-time curve to obtain multiple segmented demand power-time curves, and each energy storage system sends the adjustable power-time curve generated by itself to an energy manager; the energy manager matches the adjustable power-time curve for each segmented demand power-time curve, based on multi-segment subdivision matching to improve the matching accuracy, then calculates the total power matched by the multiple adjustable power-time curves matched for each segmented demand power-time curve, compares the calculated result with the demand dispatching power of the corresponding segmented demand power-time curve, and further generates different dispatching strategies based on the difference in the comparison results.

Description

Technical Field

[0001] The present application relates to the technical field of power scheduling, and in particular to a power scheduling method. Background Art

[0002] As the proportion of energy storage, renewable energy, and controllable loads in distribution networks continues to increase, using these decentralized and flexible resources to provide services to the power grid or customers with electricity needs, and how to fully tap the regulatory potential of these resources has become an important direction for current smart grid construction.

[0003] However, current energy storage, renewable energy, controllable loads and other energies have problems such as uneven distribution, inconsistent specifications and low utilization, which leads to a lot of energy not being used and wasted, or being idle due to low utilization, resulting in energy waste; in terms of providing services to the power grid or customers with demand for electricity, there are undesirable situations such as uneven energy supply and easy interruption during the service process. Summary of the invention

[0004] Based on this, it is necessary to provide a power scheduling method to address the problems of traditional energy storage, renewable energy, controllable loads, etc. that are not utilized and are wasted, or are idle due to low utilization rates; and to provide services to the power grid or customers with electricity needs, such as the energy supply being not smooth and the power outage being prone to occur during the service process.

[0005] The present application provides a power scheduling method, comprising:

[0006] Based on the time dimension and power dimension of the power demand, a power demand power-time curve is generated;

[0007] Specifically, the energy manager obtains the power scheduling instruction sent by the host computer;

[0008] The energy manager parses the power scheduling instruction, obtains the demand power-time curve based on the time dimension and power dimension of the power demand, writes the demand power-time curve into the power scheduling request message, and broadcasts the power acquisition request message to each energy storage system; the horizontal axis of the demand power-time curve is time, and the vertical axis is the demand power at each time node.

[0009] The obtained power demand power-time curve is cut based on the power demand dimension to obtain a plurality of time-continuous segmented power demand power-time curves, wherein the power demand in each segmented power demand power-time curve is fixed;

[0010] Specifically, each energy storage system cuts the obtained demand power-time curve based on the power dimension to obtain a plurality of segmented demand power-time curves that are continuous in time, and the demand power in each segmented demand power-time curve is a fixed value.

[0011] Based on the adjustable time dimension and adjustable power dimension of each energy storage station, an adjustable power-time curve of each energy storage station is generated;

[0012] Specifically, each energy storage system reads the adjustable power table, generates an adjustable power histogram of each energy storage system based on the adjustable power table, and sends the adjustable power histogram to the energy manager; the horizontal axis of the adjustable power histogram has multiple time intervals, and the vertical axis has the adjustable power corresponding to each time interval.

[0013] Matching the adjustable power-time curves of multiple energy storage stations to each segmented power demand power-time curve based on the time dimension;

[0014] Specifically, the energy manager receives the adjustable power histograms of all energy storage systems, and matches the adjustable power histograms of multiple energy storage systems for each segmented power demand power-time curve based on the time dimension.

[0015] Calculate the power sum of each segmented power demand power-time curve matching the adjustable power-time curves of multiple energy storage stations to obtain the matching total power;

[0016] Specifically, the energy manager calculates the total amount of power of each segmented power demand power-time curve matching the adjustable power histograms of multiple energy storage systems to obtain the matching adjustable power of each segmented power demand power-time curve.

[0017] Determine whether the total power matched by each segment power demand power-time curve is greater than the required power in the corresponding segment power demand power-time curve;

[0018] Specifically, the energy manager determines whether the matching adjustable power of each segmented power demand power-time curve is greater than or equal to the demand dispatching power of the corresponding segmented power demand power-time curve.

[0019] If the total power matched by each segment power demand power-time curve is greater than or equal to the required power in the corresponding segment power demand power-time curve, it is predicted that the power scheduling demand is met;

[0020] Specifically, if the energy manager determines that the matching adjustable power of each segmented power demand power-time curve is greater than or equal to the demand scheduling power in the corresponding segmented power demand power-time curve, the energy manager sends a message to the upper computer to meet the power scheduling requirements.

[0021] If the total power matched by any segmented power demand power-time curve is less than the required power in the corresponding segmented power demand power-time curve, it is predicted that the power scheduling demand is not met.

[0022] Specifically, if the energy manager determines that the matching adjustable power of any segmented power demand power-time curve is less than the demand scheduling power in the corresponding segmented power demand power-time curve, the energy manager sends a message to the upper computer that the power scheduling demand is not met.

[0023] Furthermore, the obtained power demand power-time curve is cut based on the power demand dimension to obtain a plurality of time-continuous segmented power demand power-time curves, wherein the power demand in each segmented power demand power-time curve is fixed, including:

[0024] Analyze the power demand-time curve to obtain multiple segments with fixed power in the power demand-time curve;

[0025] Select a line segment with fixed power;

[0026] Analyze the line segment with fixed power to obtain the required power, start time node and end time node of the line segment with fixed power;

[0027] The required power, the starting time node and the ending time node of the obtained line segment with fixed power are defined as a segmented power demand power-time curve;

[0028] Return to the step of selecting a line segment with a fixed power until each line segment with a fixed power has been selected once.

[0029] Specifically, each energy storage system cuts the obtained demand power-time curve based on the power dimension to obtain a plurality of segmented demand power-time curves that are continuous in time, and the demand power in each segmented demand power-time curve is a fixed value, including:

[0030] Analyze the power demand-time curve to obtain multiple segments with fixed power in the power demand-time curve;

[0031] Select a line segment with fixed power;

[0032] Analyze the line segment with fixed power to obtain the required power, start time node and end time node of the line segment with fixed power;

[0033] The required power, the starting time node and the ending time node of the obtained line segment with fixed power are defined as a segmented power demand power-time curve;

[0034] Return to the step of selecting a line segment with a fixed power until each line segment with a fixed power has been selected once.

[0035] Furthermore, the generating of the adjustable power-time curve of each energy storage station based on the adjustable time dimension and the adjustable power dimension of each energy storage station includes:

[0036] Select an energy storage station;

[0037] Analyze the energy storage station to obtain the average daily usage time range and available power of the energy storage station;

[0038] Create a two-dimensional coordinate system of energy storage station unused time-available power;

[0039] Fill the daily average usage time range and available power of the energy storage station into the two-dimensional coordinate system of unused time-available power of the energy storage station to obtain the adjustable power-time curve of the energy storage station;

[0040] Return to the step of selecting an energy storage station until each energy storage station has been selected once.

[0041] Specifically, each energy storage system reads the adjustable power table, generates an adjustable power histogram of each energy storage system according to the adjustable power table, and sends the adjustable power histogram to the energy manager; the horizontal axis of the adjustable power histogram has multiple time intervals, and the vertical axis has the adjustable power corresponding to each time interval, including:

[0042] Select an energy storage system;

[0043] Analyze the energy storage system to obtain the daily average working time distribution data of the energy storage system in the past month, and analyze the daily average working time distribution data to obtain each working time node of the energy storage system within 24 hours;

[0044] Obtain the working power of the energy storage system at each working time node;

[0045] Read the adjustable power table, use the working time node as the index, and query the power lower limit value of each working time node from the adjustable power table;

[0046] Subtract the lower power limit of each working time node from the working power of each working time node to obtain the adjustable power of each working time node;

[0047] Define the available power of each non-working node as 0;

[0048] Establish a two-dimensional rectangular coordinate system with time as the horizontal axis and power as the vertical axis, fill the adjustable power of each working time node into the two-dimensional rectangular coordinate system as a coordinate point, fill the adjustable power of each non-working time node into the two-dimensional rectangular coordinate system, and generate an adjustable power histogram with a time span of 24 hours;

[0049] Return to selecting an energy storage system until each energy storage system has been selected once.

[0050] Furthermore, the method of matching the adjustable power-time curves of multiple energy storage stations for each segmented power demand power-time curve based on the time dimension includes:

[0051] Select a segmented power demand power-time curve;

[0052] Analyze the segmented power demand power-time curve to obtain the demand time range of the segmented power demand power-time curve;

[0053] Select an adjustable power-time curve of an energy storage station;

[0054] Analyze the adjustable power-time curve of the energy storage station to obtain the adjustable time range of the adjustable power-time curve of the energy storage station;

[0055] Determine whether the demand time range is within the adjustable time range;

[0056] If the demand time range is within the adjustable time range, the adjustable power-time curve of the energy storage station is defined as the matching curve of the segmented power demand power-time curve;

[0057] If the demand time range is not within the adjustable time range, return to execute the selection of an adjustable power-time curve of an energy storage station until the adjustable power-time curve of each energy storage station has been selected once;

[0058] Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0059] Specifically, the energy manager receives the adjustable power histograms of all energy storage systems, and matches the adjustable power histograms of multiple energy storage systems for each segmented power demand power-time curve based on the time dimension, including:

[0060] Select a segmented power demand power-time curve;

[0061] Analyze the segmented power demand power-time curve to obtain a time range of the segmented power demand power-time curve, and define the time range as a first time range;

[0062] Select an adjustable power histogram of an energy storage system;

[0063] Parsing the adjustable power histogram of the energy storage system to obtain at least one adjustable time range of the adjustable power histogram of the energy storage system, and defining the time range as a second time range; the adjustable time range of the adjustable power histogram is the sum of multiple consecutive time intervals in which the adjustable power is not 0;

[0064] Determining whether the first time range is within any second time range;

[0065] If the first time range is within any second time range, the adjustable power histogram of the energy storage system is defined as a matching histogram of the segmented power demand power-time curve;

[0066] If the demand time range is not within any second time range, return to execute selecting an allocatable power histogram of an energy storage system until the allocatable power histogram of each energy storage system has been selected once;

[0067] Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0068] Furthermore, the power sum of the adjustable power-time curves of multiple energy storage stations that match each segmented power demand power-time curve is calculated to obtain the matched total power, including:

[0069] Select a segmented power demand power-time curve;

[0070] Analyze the segmented power demand power-time curve to obtain multiple matching curves of the segmented power demand power-time curve;

[0071] Calculate the sum of the power of the multiple matching curves that can be allocated based on the time range of the segmented power demand power-time curve, and record the sum of the power as the total power of the matching of the segmented power demand power-time curve;

[0072] Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0073] Specifically, the energy manager calculates the total amount of power of each segmented power demand power-time curve matching the adjustable power histograms of multiple energy storage systems to obtain the matching adjustable power of each segmented power demand power-time curve, including:

[0074] Select a segmented power demand power-time curve;

[0075] Obtain all matching histograms of the power demand-time curve of the segment;

[0076] Calculate the adjustable power of each matching histogram within the first time range;

[0077] Calculate the sum of the adjustable power of all matching histograms within the first time range, and use the sum as the matching adjustable power of the segmented power demand power-time curve;

[0078] Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0079] Furthermore, before respectively calculating the power sum of each segmented power demand power-time curve matching the adjustable power-time curves of multiple energy storage stations to obtain the matched total power, the method includes:

[0080] Determine whether there are new energy storage stations;

[0081] If there is a new energy storage station, the configuration information and adjustable information of the new energy storage station are obtained, and the adjustable power-time curve of the new energy storage station is generated based on the adjustable information of the new energy storage station.

[0082] Specifically, before the energy manager calculates the total amount of power of each segmented power demand power-time curve matching the adjustable power histograms of multiple energy storage systems to obtain the matching adjustable power of each segmented power demand power-time curve, the method further includes:

[0083] The energy manager determines whether there is a new energy storage system;

[0084] If there is a new energy storage system, the energy manager sends a power dispatch request message to the new energy storage system separately;

[0085] The energy manager receives the adjustable power histogram sent by the newly added energy storage system;

[0086] The energy manager matches the available power histogram of the newly added energy storage system to each segment power demand power-time curve based on the time dimension;

[0087] The subsequent steps are to calculate the sum of the powers of each segmented power demand power-time curve matching the adjustable power-time curves of multiple energy storage systems, and obtain the matching adjustable power of each segmented power demand power-time curve.

[0088] Furthermore, after predicting that the power scheduling requirement is met if the total power matched by each segmented power demand power-time curve is greater than or equal to the power requirement in the corresponding segmented power demand power-time curve, the method further includes:

[0089] Select a segmented power demand power-time curve;

[0090] Analyze the segmented power demand power-time curve to obtain multiple matching curves of the segmented power demand power-time curve;

[0091] Selecting multiple target matching curves based on the required power of the segmented power demand power-time curve, so that the sum of the adjustable powers of the multiple target matching curves is equal to the required power of the segmented power demand power-time curve;

[0092] Subtracting multiple target matching curves from all matching curves to obtain multiple remaining matching curves, and defining the obtained multiple matching curves as spare matching curves;

[0093] Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0094] Specifically, if the energy manager determines that the matching adjustable power of each segmented power demand power-time curve is greater than or equal to the demand scheduling power in the corresponding segmented power demand power-time curve, the energy manager sends a message to the upper computer that meets the power scheduling demand, and the method further includes:

[0095] Select a segmented power demand power-time curve;

[0096] Analyze the segmented power demand power-time curve to obtain all matching histograms of the segmented power demand power-time curve;

[0097] Select at least one matching histogram as a target matching histogram based on the demand power of the segmented power demand power-time curve, so that the sum of the adjustable power of all target matching histograms within the first time range is greater than or equal to the demand dispatching power in the segmented power demand power-time curve;

[0098] The remaining matching histograms except the target matching histogram among all matching histograms of the segmented power demand power-time curve are defined as spare matching histograms of the segmented power demand power-time curve;

[0099] Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0100] Furthermore, after predicting that the power scheduling requirement is not met if the total power matched by any segmented power demand power-time curve is less than the power requirement in the corresponding segmented power demand power-time curve, the method further includes:

[0101] The total power of the multiple matching curves matching the segment power demand power-time curve is less than the segment power demand power-time curve in the power demand of the corresponding segment power demand power-time curve, and defines the segment power demand power-time curve as unsatisfied;

[0102] Selecting a power-time curve of an unsatisfied segment power demand;

[0103] Based on the unmet segment power demand power-time curve, calculate the total amount of power missing from the unmet segment power demand power-time curve;

[0104] Determine whether the ratio of the total amount of power missing from the unsatisfied segmented power demand power-time curve to the power demand in the segmented power demand power-time curve is greater than N;

[0105] If the ratio of the total amount of power missing from the unsatisfied segment power demand power-time curve to the power demand in the segment power demand power-time curve is greater than N, the scheduling is abandoned;

[0106] If the ratio of the total amount of power missing from the unmet segmented power demand power-time curve to the power demand in the unmet segmented power demand power-time curve is less than or equal to N, then based on the total amount of power missing from the unmet segmented power demand power-time curve, a power adjustment demand is sent to multiple energy storage stations that match the unmet segmented power demand power-time curve;

[0107] Return to the step of selecting a power-time curve for an unsatisfied segment power demand until each power-time curve for an unsatisfied segment power demand has been selected once.

[0108] Specifically, if the energy manager determines that the matching adjustable power of any segmented power demand power-time curve is less than the demand scheduling power in the corresponding segmented power demand power-time curve, the energy manager sends a message to the upper computer that the power scheduling demand is not met. Then, the method further includes:

[0109] The total power matched by the segmented power demand power-time curve is less than the power demand in the corresponding segmented power demand power-time curve, and is defined as the segmented power demand power-time curve that does not meet the power scheduling demand;

[0110] Selecting a segmented power demand power-time curve that does not meet the power dispatch demand;

[0111] All matching histograms of the power-time curve of the segmented power demand are defined as histograms that fail to meet the power dispatch demand;

[0112] Based on the segmented power demand power-time curve that does not meet the power scheduling demand, calculate the adjustable power quantity missing from the segmented power demand power-time curve that does not meet the power scheduling demand;

[0113] Determine whether the ratio of the adjustable power quantity missing from the segmented power demand power-time curve that does not meet the power dispatching demand to the demand dispatching power quantity in the segmented power demand power-time curve is greater than N;

[0114] If the ratio of the missing adjustable power of the segmented power demand power-time curve that does not meet the power dispatch demand to the required dispatch power in the segmented power demand power-time curve is greater than N, the dispatch is abandoned;

[0115] If the ratio of the adjustable power missing from the unmet segmented power demand power-time curve to the demand dispatched power in the unmet segmented power demand power-time curve is less than or equal to N, then based on the adjustable power missing from the unmet segmented power demand power-time curve, a power adjustment demand is sent to multiple energy storage systems that match the unmet segmented power demand power-time curve;

[0116] Return to the step of selecting a power-time curve for an unsatisfied segment power demand until each power-time curve for an unsatisfied segment power demand has been selected once.

[0117] Further, the calculating of the total amount of power missing from the unsatisfied segmented power demand power-time curve based on the unsatisfied segmented power demand power-time curve includes:

[0118] The calculation formula for the total amount of power missing from the power-time curve of the unsatisfied segmented power demand is as shown in Formula 1;

[0119] Formula 1;

[0120] in, The total amount of power missing from the power-time curve that does not meet the segment power demand; The total power required to meet the power-time curve of the unsatisfied segment power demand; The total power matched by the power-time curve of the unmet segment power demand; is the preset proportion of standby power.

[0121] Specifically explained as follows: the calculating, based on the segmented power demand power-time curve that does not meet the power scheduling demand, the adjustable power amount missing from the segmented power demand power-time curve that does not meet the power scheduling demand includes:

[0122] The calculation formula for the adjustable power that is missing from the power-time curve of the segmented power demand is as shown in Formula 1;

[0123] Formula 1;

[0124] in, The adjustable power that is missing from the power-time curve that does not meet the segmented power demand; Dispatching power for unmet segmented power demand in power-time curve; To match the power-time curve of the unsatisfied segment power demand with adjustable power; is the preset proportion of standby power.

[0125] Furthermore, the method of sending power adjustment requirements to multiple energy storage stations matching the power-time curve of the unmet segmented power demand based on the total amount of power missing from the power-time curve of the unmet segmented power demand includes:

[0126] Analyzing the multiple matching curves of the power-time curve matching the unsatisfied segmented power demand to obtain the number of the multiple matching curves of the power-time curve matching the unsatisfied segmented power demand;

[0127] Calculate the quotient of the total amount of power missing from the power-time curve of the unmet segmented power demand and the number of matching curves to obtain a power adjustment amount for each matching curve;

[0128] The power adjustment amount is sent to each energy storage station corresponding to the matching curve.

[0129] Specifically, the method uses the adjustable power quantity missing from the power-time curve of the unmet segmented power demand as a reference, and sends a power adjustment demand to multiple energy storage systems that match the power-time curve of the unmet segmented power demand, including:

[0130] Obtaining the number of histograms of all unsatisfied power scheduling demands of the unsatisfied segmented power demand power-time curve;

[0131] Calculate the ratio of the adjustable power quantity missing from the power-time curve of the unsatisfied segmented power demand to the number of histograms of all unsatisfied power scheduling demands, and the obtained ratio is the power quantity adjustment quantity of each histogram of unsatisfied power scheduling demands;

[0132] The power adjustment amount request message is sent in the form of broadcast to each energy storage system corresponding to the histogram that does not meet the power scheduling demand.

[0133] The present application relates to a power dispatching method, which first receives a power dispatching instruction sent by a host computer, generates a corresponding demand power-time curve for the received power dispatching instruction, then cuts the demand power-time curve to obtain multiple segmented demand power-time curves, and each energy storage system sends the adjustable power-time curve generated by itself to an energy manager; the energy manager matches the adjustable power-time curve for each segmented demand power-time curve, based on multi-segment subdivision matching to improve the matching accuracy, then calculates the total power matched by the multiple adjustable power-time curves matched for each segmented demand power-time curve, compares the calculated result with the demand dispatching power of the corresponding segmented demand power-time curve, and further generates different dispatching strategies based on the difference in the comparison results. BRIEF DESCRIPTION OF THE DRAWINGS

[0134] Figure 1 A schematic diagram of a flow chart of a power scheduling method provided in one embodiment of the present application.

[0135] Figure 2 A schematic diagram of matching a segmented power demand power-time curve with adjustable power-time curves of multiple energy storage stations in a power scheduling method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0136] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0137] like Figure 1As shown, in one embodiment of the present application, the power scheduling method includes the following S100 to S900:

[0138] S100: The energy manager obtains a power scheduling instruction sent by a host computer.

[0139] Specifically, the energy manager is used to receive power scheduling instructions sent by the host computer, and analyze the power scheduling instructions sent by the host computer, and then adapt the power scheduling instructions sent by the host computer to a suitable energy storage system. At the same time, the energy manager can also send instructions or information to multiple energy storage systems, and the energy manager collects information sent by multiple energy storage systems.

[0140] S200, the energy manager parses the power dispatch instruction, obtains the demand power-time curve based on the time dimension and power dimension of the power demand, writes the demand power-time curve into the power dispatch request message, and broadcasts the power dispatch request message to each energy storage system; the horizontal axis of the demand power-time curve is time, and the vertical axis is the demand power at each time node.

[0141] S300, each energy storage system cuts the obtained demand power-time curve based on the power dimension to obtain a plurality of segmented demand power-time curves that are continuous in time, and the demand power in each segmented demand power-time curve is a fixed value.

[0142] Specifically, the segmented demand power-time curve refers to a part of the demand power-time curve, and all the segmented demand power-time curves constitute a complete demand power-time curve based on the continuity of time.

[0143] S400, each energy storage system reads the adjustable power table, generates an adjustable power histogram of each energy storage system according to the adjustable power table, and sends the adjustable power histogram to the energy manager; the horizontal axis of the adjustable power histogram has multiple time intervals, and the vertical axis has the adjustable power corresponding to each time interval.

[0144] Specifically, the adjustable power table is a table filled in by the energy storage system through its own operating data, and the table includes the corresponding adjustable power of the energy storage system at different times of the day. The adjustable power corresponding to all times and each time of the day constitutes the adjustable power table.

[0145] S500: The energy manager receives the adjustable power histograms of all energy storage systems, and matches the adjustable power histograms of multiple energy storage systems for each segmented power demand power-time curve based on the time dimension.

[0146] Specifically, matching the adjustable power histograms of multiple energy storage systems for each segmented power demand power-time curve refers to retrieving the adjustable power histograms of all energy storage systems based on the time dimension direction in each segmented power demand power-time curve, and screening out the adjustable power histograms of all energy storage systems that meet the conditions in the time dimension direction as the adjustable power histograms of the successfully matched energy storage systems.

[0147] S600, the energy manager calculates the total amount of power of each segmented power demand power-time curve matching the adjustable power histogram of multiple energy storage systems, and obtains the matching adjustable power of each segmented power demand power-time curve.

[0148] Specifically, the sum of the electric quantities in the corresponding time dimension in the adjustable power histograms of the multiple energy storage systems that successfully match the power-time curve of each segmented power demand is taken as the sum of the electric quantities in the adjustable power histograms of the multiple energy storage systems.

[0149] S700, the energy manager determines whether the matching adjustable power of each segment power demand power-time curve is greater than or equal to the demand dispatching power of the corresponding segment power demand power-time curve.

[0150] S800, if the energy manager determines that the matching adjustable power of each segment power demand power-time curve is greater than or equal to the demand scheduling power in the corresponding segment power demand power-time curve, the energy manager sends a message to the upper computer to meet the power scheduling demand.

[0151] Specifically, the matching adjustable power of each segmented power demand power-time curve is compared with the demand dispatching power of the corresponding segmented power demand power-time curve. Only when the result of comparing the matching adjustable power of each segmented power demand power-time curve with the demand dispatching power of the corresponding segmented power demand power-time curve is that the matching adjustable power of the segmented power demand power-time curve is greater than or equal to the demand dispatching power of the corresponding segmented power demand power-time curve, can the energy manager send a message to the upper computer to meet the power dispatching demand.

[0152] S900, if the energy manager determines that the matching adjustable power of any segment power demand power-time curve is less than the demand scheduling power in the corresponding segment power demand power-time curve, the energy manager sends a message to the upper computer that the power scheduling demand is not met.

[0153] In this embodiment, the energy manager first receives the power dispatching instruction sent by the host computer, and generates a corresponding demand power-time curve for the received power dispatching instruction, and then sends the generated demand power-time curve to each energy storage system. The energy storage system obtains multiple segmented demand power-time curves by cutting the demand power-time curve, and the energy storage system sends its own generated adjustable power histogram to the energy manager; the energy manager matches the adjustable power histogram for each segmented demand power-time curve, and improves the matching accuracy through multi-segment subdivision matching, and then matches the multiple adjustable power histograms matched for each segmented demand power-time curve with adjustable power calculation, compares the calculated result with the demand dispatching power of the corresponding segmented demand power-time curve, and further generates a deployment strategy based on the comparison result.

[0154] In one embodiment of the present application, each of the energy storage systems cuts the obtained demand power-time curve based on the power dimension to obtain a plurality of time-continuous segmented demand power-time curves, wherein the demand power in each segmented demand power-time curve is a fixed value, including the following S301 to S305:

[0155] S301, analyzing the power demand-time curve to obtain a plurality of line segments with fixed power in the power demand-time curve.

[0156] S302, selecting a line segment with fixed power.

[0157] S303, parsing the line segment with fixed power to obtain the required power, the start time node and the end time node of the line segment with fixed power.

[0158] S304, defining the required power, the start time node and the end time node of the obtained line segment with fixed power as a segmented power required power-time curve.

[0159] S305, returning to the step of selecting a line segment with a fixed power until each line segment with a fixed power has been selected once.

[0160] Specifically, a fixed-power line segment refers to a line segment in the demand power-time curve where the power value remains unchanged; a fixed-power line segment can also represent a line segment in the demand power-time curve where the power value fluctuates within a preset range; and the power values ​​in the segmented power demand power-time curve are not 0 in the continuous time from the start time node to the end time node.

[0161] In this embodiment, the demand power-time curve is divided into multiple segments to obtain multiple segmented power demand power-time curves, and the power value in each segmented power demand power-time curve is fixed or the power value fluctuates within a certain range, thereby obtaining multiple segmented power demand power-time curves. By dividing the demand power-time curve into multiple segmented power demand power-time curves, it is only necessary to dispatch electricity for each segmented power demand power-time curve to meet the dispatched electricity of the entire demand power-time curve. This dispatching electricity method is convenient for calculation and precise matching.

[0162] In one embodiment of the present application, each energy storage system reads an adjustable power table, generates an adjustable power histogram of each energy storage system according to the adjustable power table, and sends the adjustable power histogram to the energy manager; the horizontal axis of the adjustable power histogram has multiple time intervals, and the vertical axis has the adjustable power corresponding to each time interval, including the following S401 to S408:

[0163] S401, select an energy storage system.

[0164] S402, analyzing the energy storage system to obtain the daily average working time distribution data of the energy storage system in the most recent month, and analyzing the daily average working time distribution data to obtain each working time node of the energy storage system within 24 hours.

[0165] S403, obtaining the working power of each working time node of the energy storage system.

[0166] S404, read the adjustable power table, use the working time node as an index, and query the power lower limit value of each working time node from the adjustable power table.

[0167] S405: Subtract the power lower limit value of each working time node from the working power of each working time node to obtain the adjustable power of each working time node.

[0168] S406: Define the adjustable power of each node during non-working hours as 0.

[0169] S407, establish a two-dimensional plane rectangular coordinate system with time as the horizontal axis and power as the vertical axis, fill the adjustable power of each working time node as a coordinate point into the two-dimensional plane rectangular coordinate system, fill the adjustable power of each non-working time node into the two-dimensional plane rectangular coordinate system, and generate an adjustable power histogram with a time span of 24 hours.

[0170] S408, returning to the step of selecting an energy storage system until each energy storage system has been selected once.

[0171] Specifically, the adjustable power histogram of the energy storage system is obtained by analyzing the working time of the energy storage system; when the power lower limit value of a working time node of the energy storage system is equal to the working power of the energy storage system at that time, the adjustable power at this time is also zero; the working time refers to the time when the energy storage system is in the operation stage.

[0172] In this embodiment, the working power of each working time node of the energy storage system is obtained, and the working power of each working time node obtained is compared with the power lower limit of the corresponding time node in the adjustable power table of the energy storage system to obtain the adjustable power of each time node, and the corresponding adjustable power is filled into the two-dimensional rectangular coordinate system in time sequence to obtain an adjustable power histogram.

[0173] like Figure 2 As shown, Figure 2 1, 2, and 3 refer to different segmented power demand power-time curves; the multiple coordinate systems corresponding to the segmented power demand power-time curve labeled 1 are the adjustable power histograms of multiple energy storage systems matched thereto; the corresponding time periods T0 to T1 of the segmented power demand power-time curve labeled 1 are all included in the adjustable power histogram t0 to t1 of each energy storage system; in one embodiment of the present application, the energy manager receives the adjustable power histograms of all energy storage systems, and matches the adjustable power histograms of multiple energy storage systems for each segmented power demand power-time curve based on the time dimension, including the following S501 to S508:

[0174] S501, selecting a segmented power demand power-time curve.

[0175] S502, analyzing the segmented power demand power-time curve to obtain a time range of the segmented power demand power-time curve, and defining the time range as a first time range.

[0176] S503: Select an adjustable power histogram of an energy storage system.

[0177] S504, parsing the adjustable power histogram of the energy storage system to obtain at least one adjustable time range of the adjustable power histogram of the energy storage system, and defining the time range as a second time range; the adjustable time range of the adjustable power histogram is the sum of multiple consecutive time intervals in which the adjustable power is not 0.

[0178] S505: Determine whether the first time range is within any second time range.

[0179] S506: If the first time range is within any second time range, define the adjustable power histogram of the energy storage system as a matching histogram of the segmented power demand power-time curve.

[0180] S507: If the demand time range is not within any second time range, return to execute selecting an adjustable power histogram of an energy storage system until the adjustable power histogram of each energy storage system has been selected once.

[0181] S508, returning to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0182] Specifically, the time range in the time range of the segmented electricity demand power-time curve refers to a continuous time period having a first starting time node and a first ending time node; the adjustable time range in at least one adjustable time range of the adjustable power histogram of the energy storage system refers to a continuous time period having a second starting time node and a second ending time node, and the second starting time node is less than or equal to the first starting time node and the second ending time node is greater than or equal to the first ending time node; of course, the power values ​​within the second starting time node and the second ending time node are not zero.

[0183] There may be multiple continuous time intervals in the adjustable power histogram of an energy storage system, and each continuous time interval may have its own independent matching segmented power demand power-time curve.

[0184] In this embodiment, by setting the second time range in the time dimension of the adjustable power histogram of the energy storage system to include the first time range of the segmented power demand power-time curve as a limiting condition, the adjustable power histogram that meets this condition is defined as a matching histogram. This matching method can ensure that the adjustable power histogram of the energy storage system in the time dimension and the power dimension can provide continuous power output for the segmented power demand power-time curve.

[0185] In one embodiment of the present application, the energy manager calculates the total amount of power of each segmented power demand power-time curve matching the adjustable power histograms of multiple energy storage systems, and obtains the matching adjustable power of each segmented power demand power-time curve, including the following S601 to S605:

[0186] S601, selecting a segmented power demand power-time curve.

[0187] S602: Obtain all matching histograms of the segmented power demand power-time curve.

[0188] S603, calculating the adjustable power of each matching histogram within the first time range.

[0189] S604, calculating the sum of the adjustable power of all matching histograms within the first time range, and using the sum as the matching adjustable power of the segmented power demand power-time curve.

[0190] S605, returning to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0191] In this embodiment, by taking the first time range corresponding to a segmented power demand power-time curve as the time reference, the adjustable power quantities of all matching histograms matched by the segmented power demand power-time curve within the first time range are summed up and calculated, and the total adjustable power quantity obtained is the matching adjustable power quantity of the segmented power demand power-time curve.

[0192] In one embodiment of the present application, before the energy manager calculates the total amount of power of each segmented power demand power-time curve matching the adjustable power histograms of multiple energy storage systems to obtain the matching adjustable power of each segmented power demand power-time curve, the method further includes the following S606 to S610:

[0193] S606: The energy manager determines whether there is a new energy storage system.

[0194] S607: If there is a new energy storage system, the energy manager sends a power scheduling request message to the new energy storage system separately.

[0195] S608: The energy manager receives the adjustable power histogram sent by the newly added energy storage system.

[0196] S609, the energy manager matches the adjustable power histogram of the newly added energy storage system for each segmented power demand power-time curve based on the time dimension.

[0197] S610, executing the subsequent steps of respectively calculating the sum of the powers of each segmented power demand power-time curve that matches the adjustable power-time curves of multiple energy storage systems, to obtain the matching adjustable power of each segmented power demand power-time curve.

[0198] Specifically, the newly added energy storage system refers to whether there is an energy storage system newly connected to the energy manager in the system where the energy manager serves as the upper processing device.

[0199] In this embodiment, the energy manager determines whether there is a newly connected energy storage system. When there is a newly connected energy storage system, the adjustable power histogram sent to the newly added energy storage system is executed in sequence, and the energy manager matches the adjustable power histogram of the newly added energy storage system for each segmented power demand power-time curve based on the time dimension, etc. until the matching is completed for each newly added energy storage system.

[0200] In one embodiment of the present application, if the energy manager determines that the matching adjustable power of each segmented power demand power-time curve is greater than or equal to the demand scheduling power in the corresponding segmented power demand power-time curve, then after the energy manager sends a message to the upper computer that the power scheduling demand is met, the method further includes the following S801 to S805:

[0201] S801, selecting a segmented power demand power-time curve.

[0202] S802, analyzing the segmented power demand power-time curve to obtain all matching histograms of the segmented power demand power-time curve.

[0203] S803, selecting at least one matching histogram as a target matching histogram based on the demand power of the segmented power demand power-time curve, so that the sum of the adjustable power of all target matching histograms within the first time range is greater than or equal to the demand scheduling power in the segmented power demand power-time curve.

[0204] S804: defining all the matching histograms of the segmented power demand power-time curve except the target matching histogram as spare matching histograms of the segmented power demand power-time curve.

[0205] S805, returning to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

[0206] Specifically, the target matching histogram refers to at least one matching histogram randomly selected from all matching histograms that match the segmented power demand power-time curve, and the adjustable power of all target matching histograms of the segmented power demand power-time curve is only greater than or equal to the demand scheduling power in the segmented power demand power-time curve.

[0207] The spare matching histogram refers to the matching histogram remaining after removing all target matching histograms from all matching histograms matching the power-time curve of the segmented power demand.

[0208] In this embodiment, all matching histograms matching the segmented power demand power-time curve are randomly screened and the adjustable power of the randomly screened matching histograms are accumulated until the accumulated sum of the adjustable power is equal to the demand scheduling power in the segmented power demand power-time curve, then the random screening is stopped and the remaining matching histograms are used as alternatives; this method not only meets the power demand of the segmented power demand power-time curve but also has certain logistical guarantees.

[0209] In one embodiment of the present application, if the energy manager determines that the matching adjustable power of any segmented power demand power-time curve is less than the demand scheduling power in the corresponding segmented power demand power-time curve, the energy manager sends a message to the upper computer that the power scheduling demand is not met, and the method further includes the following S901 to S900:

[0210] S901, a segmented power demand power-time curve in which the total power matched by the segmented power demand power-time curve is less than the power demand in the corresponding segmented power demand power-time curve is defined as a segmented power demand power-time curve that does not meet the power scheduling demand.

[0211] S902, selecting a segmented power demand power-time curve that does not meet the power scheduling demand.

[0212] S903: define all matching histograms of the segmented power demand power-time curve as histograms that fail to meet the power scheduling demand.

[0213] S904: Based on the power-time curve of the segmented power demand that does not meet the power scheduling demand, calculate the adjustable power quantity missing from the power-time curve of the segmented power demand that does not meet the power scheduling demand.

[0214] S905: Determine whether the ratio of the adjustable power quantity missing from the segmented power demand power-time curve that does not meet the power scheduling demand to the demand scheduling power quantity in the segmented power demand power-time curve is greater than N.

[0215] S906: If the ratio of the missing adjustable power of the segmented power demand power-time curve that does not meet the power scheduling requirement to the required scheduling power in the segmented power demand power-time curve is greater than N, the scheduling is abandoned.

[0216] S907: If the ratio of the adjustable power missing from the power-time curve of the unmet segmented power demand to the demand-scheduled power in the power-time curve of the unmet segmented power demand is less than or equal to N, then based on the adjustable power missing from the power-time curve of the unmet segmented power demand, a power adjustment demand is sent to multiple energy storage systems that match the power-time curve of the unmet segmented power demand.

[0217] S908, returning to the step of selecting a power-time curve for an unmet segmented power demand, until each power-time curve for an unmet segmented power demand has been selected once.

[0218] Specifically, the missing adjustable power refers to the total power required to meet the power scheduling demand of the segmented power demand power-time curve that does not meet the power scheduling demand and the backup power scheduling demand, minus the adjustable power matched by the current segmented power demand power-time curve that does not meet the power scheduling demand.

[0219] In this embodiment, saturation matching is performed by taking the total demand of the power scheduling demand of the segmented power demand power-time curve that meets the unmet power scheduling demand and the standby power scheduling demand as the benchmark, so that after completing the matching under this condition, a guaranteed power scheduling can be provided for the segmented power demand power-time curve that meets the unmet power scheduling demand.

[0220] In one embodiment of the present application, the step of calculating the adjustable power amount missing from the segmented power demand power-time curve that does not meet the power scheduling demand based on the segmented power demand power-time curve that does not meet the power scheduling demand includes the following S904a:

[0221] S904a, the calculation formula of the adjustable power missing from the power-time curve of the segmented power demand is as shown in Formula 1;

[0222] Formula 1;

[0223] in, The adjustable power that is missing from the power-time curve that does not meet the segmented power demand; Dispatching power for unmet segmented power demand in power-time curve; To match the power-time curve of the unsatisfied segment power demand with adjustable power; is the preset proportion of standby power.

[0224] Specifically, the preset proportion of standby power refers to the proportion of the standby power dispatching demand to the overall power dispatching demand of the power-time curve of the unmet segmented power demand.

[0225] In one embodiment of the present application, the step of sending a power adjustment request to multiple energy storage systems matching the power-time curve of the unsatisfied segmented power demand based on the adjustable power quantity missing from the power-time curve of the unsatisfied segmented power demand is performed, including the following S907a to S907c:

[0226] S907a, obtaining the number of histograms of all unsatisfied power scheduling demands of the unsatisfied segmented power demand power-time curve.

[0227] S907b, calculating the ratio of the adjustable power missing from the power-time curve of the unmet segmented power demand to the number of histograms of all unmet power scheduling demands, and the obtained ratio is the power adjustment amount of each histogram of unmet power scheduling demands.

[0228] S907c: Send the power adjustment amount request message in the form of broadcast to each energy storage system corresponding to the histogram that does not meet the power scheduling demand.

[0229] Specifically, by evenly distributing the missing adjustable power to all histograms that do not meet the power scheduling requirements, the specific power that needs to be adjusted for each histogram that does not meet the power scheduling requirements is obtained, and the information of the adjusted specific power is sent to the energy storage system corresponding to each histogram that does not meet the power scheduling requirements.

[0230] In this embodiment, a time adjustment requirement for the first time range corresponding to the segmented power demand power-time curve of the unmet power scheduling demand can also be sent to the remaining histograms after removing all the histograms of the unmet power scheduling demand. When each of the remaining histograms accepts adjustment, the adjustable power of the corresponding histogram is accumulated to the matching adjustable power of all the previous histograms of the unmet power scheduling demand, until the sum of the two meets the demand scheduling power of the segmented power demand power-time curve of the unmet power scheduling demand, then the sending of the time scheduling requirement is stopped.

[0231] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0232] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A power scheduling method, characterized in that: The power scheduling method comprises: Based on the time dimension and power dimension of the power demand, a power demand power-time curve is generated; The obtained power demand power-time curve is cut based on the power demand dimension to obtain a plurality of time-continuous segmented power demand power-time curves, wherein the power demand in each segmented power demand power-time curve is fixed; Based on the adjustable time dimension and adjustable power dimension of each energy storage station, an adjustable power-time curve of each energy storage station is generated; Matching the adjustable power-time curves of multiple energy storage stations to each segmented power demand power-time curve based on the time dimension; The method of matching the adjustable power-time curves of multiple energy storage stations for each segmented power demand power-time curve based on the time dimension includes: Select a segmented power demand power-time curve; Analyze the segmented power demand power-time curve to obtain the demand time range of the segmented power demand power-time curve; Select an adjustable power-time curve of an energy storage station; Analyze the adjustable power-time curve of the energy storage station to obtain the adjustable time range of the adjustable power-time curve of the energy storage station; Determine whether the demand time range is within the adjustable time range; If the demand time range is within the adjustable time range, the adjustable power-time curve of the energy storage station is defined as the matching curve of the segmented power demand power-time curve; If the demand time range is not within the adjustable time range, return to execute the selection of an adjustable power-time curve of an energy storage station until the adjustable power-time curve of each energy storage station has been selected once; Returning to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once; Calculate the power sum of each segmented power demand power-time curve matching the adjustable power-time curves of multiple energy storage stations to obtain the matching total power; Determine whether the total power matched by each segment power demand power-time curve is greater than the required power in the corresponding segment power demand power-time curve; If the total power matched by each segment power demand power-time curve is greater than or equal to the required power in the corresponding segment power demand power-time curve, it is predicted that the power scheduling demand is met; If the total power matched by any segmented power demand power-time curve is less than the required power in the corresponding segmented power demand power-time curve, it is predicted that the power scheduling demand is not met.

2. The power scheduling method according to claim 1, characterized in that: The obtained power demand power-time curve is cut based on the power demand dimension to obtain a plurality of time-continuous segmented power demand power-time curves, wherein the power demand in each segmented power demand power-time curve is fixed, including: Analyze the power demand-time curve to obtain multiple segments with fixed power in the power demand-time curve; Select a line segment with fixed power; Analyze the line segment with fixed power to obtain the required power, start time node and end time node of the line segment with fixed power; The required power, the starting time node and the ending time node of the obtained line segment with fixed power are defined as a segmented power demand power-time curve; Return to the step of selecting a line segment with a fixed power until each line segment with a fixed power has been selected once.

3. The power scheduling method according to claim 2, characterized in that: The method of generating an adjustable power-time curve of each energy storage station based on the adjustable time dimension and the adjustable power dimension of each energy storage station includes: Select an energy storage station; Analyze the energy storage station to obtain the average daily usage time range and available power of the energy storage station; Create a two-dimensional coordinate system of energy storage station unused time-available power; Fill the average unused time range and available power of the energy storage station every day into the unused time-available power two-dimensional coordinate system of the energy storage station to obtain the adjustable power-time curve of the energy storage station; Return to the step of selecting an energy storage station until each energy storage station has been selected once.

4. The power scheduling method according to claim 3, characterized in that: The method of respectively calculating the power sum of each segmented power demand power-time curve matching the adjustable power-time curves of multiple energy storage stations to obtain the matched total power includes: Select a segmented power demand power-time curve; Analyze the segmented power demand power-time curve to obtain multiple matching curves of the segmented power demand power-time curve; Calculate the sum of the power of the multiple matching curves that can be allocated based on the time range of the segmented power demand power-time curve, and record the sum of the power as the total power of the matching of the segmented power demand power-time curve; Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

5. The power scheduling method according to claim 4, characterized in that: Before respectively calculating the power sum of each segmented power demand power-time curve matching the adjustable power-time curves of multiple energy storage stations to obtain the matched total power, the method includes: Determine whether there are new energy storage stations; If there is a new energy storage station, the configuration information and adjustable information of the new energy storage station are obtained, and the adjustable power-time curve of the new energy storage station is generated based on the adjustable information of the new energy storage station.

6. The power scheduling method according to claim 5, characterized in that: After predicting that the power scheduling requirement is met if the total power matched by each segmented power demand power-time curve is greater than or equal to the power requirement in the corresponding segmented power demand power-time curve, the method further includes: Select a segmented power demand power-time curve; Analyze the segmented power demand power-time curve to obtain multiple matching curves of the segmented power demand power-time curve; Selecting multiple target matching curves based on the required power of the segmented power demand power-time curve, so that the sum of the adjustable powers of the multiple target matching curves is equal to the required power of the segmented power demand power-time curve; Subtracting multiple target matching curves from all matching curves to obtain multiple remaining matching curves, and defining the obtained multiple matching curves as spare matching curves; Return to the step of selecting a segmented power demand power-time curve until each segmented power demand power-time curve has been selected once.

7. The power scheduling method according to claim 6, characterized in that: After predicting that the power scheduling requirement is not met if the total power matched by any segmented power demand power-time curve is less than the power requirement in the corresponding segmented power demand power-time curve, the method further includes: The total power of the multiple matching curves matching the segment power demand power-time curve is less than the segment power demand power-time curve in the power demand of the corresponding segment power demand power-time curve, and defines the segment power demand power-time curve as unsatisfied; Selecting a power-time curve of an unsatisfied segment power demand; Based on the unmet segment power demand power-time curve, calculate the total amount of power missing from the unmet segment power demand power-time curve; Determine whether the ratio of the total amount of power missing from the unsatisfied segmented power demand power-time curve to the power demand in the segmented power demand power-time curve is greater than N; If the ratio of the total amount of power missing from the unsatisfied segment power demand power-time curve to the power demand in the segment power demand power-time curve is greater than N, the scheduling is abandoned; If the ratio of the total amount of power missing from the unmet segmented power demand power-time curve to the power demand in the unmet segmented power demand power-time curve is less than or equal to N, then based on the total amount of power missing from the unmet segmented power demand power-time curve, a power adjustment demand is sent to multiple energy storage stations that match the unmet segmented power demand power-time curve; Return to the step of selecting a power-time curve for an unsatisfied segment power demand until each power-time curve for an unsatisfied segment power demand has been selected once.

8. The power scheduling method according to claim 7, characterized in that: The calculating, based on the unmet segmented power demand power-time curve, of the total amount of power missing from the unmet segmented power demand power-time curve comprises: The calculation formula for the total amount of power missing from the power-time curve of the unsatisfied segmented power demand is as shown in Formula 1; Formula 1; in, The total amount of power missing from the power-time curve that does not meet the segment power demand; The total power required to meet the power-time curve of the unsatisfied segment power demand; The total power matched by the power-time curve of the unmet segment power demand; is the preset proportion of standby power.

9. The power scheduling method according to claim 8, characterized in that: The method uses the total amount of power missing from the power-time curve of the unsatisfied segmented power demand as a reference, and sends a power adjustment request to multiple energy storage stations that match the power-time curve of the unsatisfied segmented power demand, including: Analyzing the multiple matching curves of the power-time curve matching the unsatisfied segmented power demand to obtain the number of the multiple matching curves of the power-time curve matching the unsatisfied segmented power demand; Calculate the quotient of the total amount of power missing from the power-time curve of the unmet segmented power demand and the number of matching curves to obtain a power adjustment amount for each matching curve; The power adjustment amount is sent to each energy storage station corresponding to the matching curve.

Images