Priority load-based power supply placement and induction control system

Abstract

When supplying power to a load with set priority, if the connection destination is determined while including power sources with insufficient available power as candidates, misplacement, connection delays, and switching failures are likely to occur. [Solution] The control device 10 calculates the required power supply for the load to be powered, excludes power sources 21 to 23 that have less than this required power supply from the candidates, and then selects and places or guides a power source from the remaining power sources to be controlled for connection or placement. If no candidates remain, the same process is performed for each partial load, and when the remaining period of the selected power source falls below the standard, it is reconfigured.

Description

Technical Field

[0001] The present invention relates to a power supply system that supplies power from a plurality of power sources to a plurality of loads. In particular, based on the required supply power for the power supply target load, a power source with insufficient available power is excluded from the candidates, and only the remaining power sources after the exclusion are selected as the selection targets. The connection destination or arrangement destination thereof is controlled, the connection or movement of the power source is induced as necessary, and further, it relates to a power source arrangement and induction control system that reconfigures according to the remaining period.

Background Art

[0002] In times of disaster, power outages, or supply-demand imbalances, technologies are used that sequentially supply power to lighting, communication equipment, medical devices, air conditioners, and other loads from the ones with higher priorities using batteries, generators, in-vehicle power supplies, and other distributed power sources.

[0003] However, in conventional control, even when determining the power supply possibility by focusing on the total capacity of each power source or the theoretical combination, there are cases where it does not integrally control which power source to move or connect to which connection destination and in which order to switch. Also, if a power source with available power less than the required supply power of the power supply target load is selected while remaining in the candidates, connection operations and movement inductions may be executed in vain, leading to a delay in starting power supply or a switching failure.

[0004] Furthermore, when it is not possible to handle the entire power supply target load, if the transition order to partial power supply is not determined, it is likely to perform partial selection first and then remove ineligible power sources, resulting in a decrease in the reproducibility of the processing results. In addition, even if the remaining periods of each power source change after the actual operation starts, the configuration for re-excluding, selecting, arranging, or inducing again according to the remaining periods is not sufficient.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention aims to provide a power supply allocation and induction control system that maintains an order constraint of always excluding power supplies that do not provide the necessary power to operate the load to be powered, and then selecting only from the remaining power supplies, while controlling the connection destination or placement destination of the selected power supply at the actual machine level, and further applies the same order of processing to partial load units if it is not possible to handle the entire load to be powered, and can be reconfigured according to the remaining period during operation. [Means for solving the problem]

[0006] The power supply placement and guidance control system of the present invention comprises: a supply request calculation unit that calculates the required power supply to a load to be powered; an exclusion unit that obtains the current available power supply of each power supply and excludes power supplies with less than the required power supply from the candidates; a selection unit that selects at least one power supply from the excluded candidate power supplies; and a placement and guidance control unit that controls the power supply path, connection destination or placement destination so that the selected power supply supplies power to the load to be powered, and guides the connection or movement of the power supply as necessary.

[0007] Furthermore, if no candidate power sources remain after exclusion for the entire load to be powered, the load to be powered is divided into multiple partial loads based on priority or function. For each partial load, the required power supply is calculated, power sources with less than the required power supply are excluded, power sources are selected after exclusion, and then allocated or guided in this order. After allocation or guidance, the remaining period of the selected power source is calculated, and if this remaining period is less than the standard period, the same process is repeated for the partial load or the load to be powered to be reconfigured. [Effects of the Invention]

[0008] According to the present invention, since power sources that do not meet the required power supply are excluded before selection, unnecessary switching commands and movement guidance for power sources that cannot be connected or have insufficient capacity can be suppressed. Furthermore, since the order constraint, which is applied only after exclusion, is common to both full load and partial load conditions, the reproducibility and explainability of the process are enhanced. In addition, by reconfiguring in the same order when the remaining period decreases, the arrangement or guidance of power supply destinations can be continuously updated while suppressing power supply interruptions. [Brief explanation of the drawing]

[0009] [Figure 1] A block diagram showing the overall configuration of the power supply arrangement and induction control system 1. [Figure 2] A flowchart showing the processing sequence executed by the control device 10. [Figure 3] A schematic diagram showing power supply configuration and inductive operation with reconfiguration based on the remaining lifespan. [Figure 4] A schematic diagram showing power supply configuration and inductive operation for partial load units. [Figure 5] This flowchart shows the process for reconfiguring the supply configuration based on the remaining period during the supply period. [Modes for carrying out the invention]

[0010] The power supply arrangement and induction control system 1 shown in Figure 1 comprises a control device 10, a plurality of power supplies 21, 22, 23, a load group 30 including a plurality of loads, a power supply path switching unit 50, and an induction terminal 60. The power supplies 21, 22, 23 may be stationary batteries, portable batteries, generators, vehicle-mounted power supplies, or similar power supply devices. The load group 30 includes at least a plurality of loads with set priorities, and in this embodiment includes a first priority load 31, a second priority load 32, and a third priority load 33.

[0011] The control device 10 includes a load information acquisition unit 11, a power supply information acquisition unit 12, a target load determination unit 13, a supply request calculation unit 14, an exclusion unit 15, a selection unit 16, an arrangement / induction control unit 17, a reconfiguration determination unit 18, and a storage unit 19. These may be implemented by one or more processors executing a program, or some or all of them may be configured with dedicated circuits.

[0012] The load information acquisition unit 11 acquires the current required power, operating mode, priority, and connection destination information for each load. The power supply information acquisition unit 12 acquires the current available power, equivalent residual energy, connection availability status, mobility availability status, and current location or connection location for each power supply.

[0013] In this specification, "required power supply" means the power necessary to operate the powered load or partial load in a predetermined functional state. Furthermore, "supplyable power" means the maximum power that each power source can continuously supply to the corresponding connection point in its current state.

[0014] The load determination unit 13 determines the loads to be powered according to the priority of the loads. For example, a predetermined number of loads may be selected from the highest priority loads to be powered, or the loads to be powered may be determined in units of pre-registered load groups.

[0015] The supply request calculation unit 14 calculates the required power supply P_req for the load G, where p_i is the required power for each load i included in the load G to be supplied with power. P_req = Σ p_i (i∈G) It is calculated as follows. Similarly, for partial load G_k, P_req(k) = Σ p_i (i∈G_k) It is calculated as follows.

[0016] The exclusion unit 15 compares the available power supply P_avail(j) of each power supply j with the required power supply P_req or P_req(k), P_avail(j) < P_req or P_avail(j) < P_req(k) exclude the power source that meets this condition from the candidates. Therefore, the candidate set C is C = { j | P_avail(j) ≧ P_req} defined as, and for the sub - load G_k C(k) = { j | P_avail(j) ≧ P_req(k)} is defined as such.

[0017] The selection unit 16 only selects the power sources included in the candidate set C or C(k) after exclusion. The essence of the present invention lies not in the mathematical optimization calculation itself, but in the control sequence that makes a selection only after exclusion and reflects the selection result in the actual power supply path switching and connection or movement guidance. Therefore, the selection unit 16 may be configured to select the power source with the highest priority in the candidate set according to the priority table for each connection point stored in the storage unit 19.

[0018] The placement and guidance control unit 17 outputs a switching command to the power supply path switching unit 50 so that the selected power source is connected to the connection point corresponding to the power supply target load, and outputs guidance information including the connection destination, movement path, and connection procedure to the guidance terminal 60 as necessary. In this specification, "placement" means allocating a power source to a predetermined connection point and forming or changing a physical or electrical power supply path. "Guidance" means giving guidance information for reaching and connecting to the connection destination or placement destination to an operator or a movable power source.

[0019] In the process shown in FIG. 2, first, in S101, load information and power source information are acquired. In S102, the target load determination unit 13 determines the power supply target load. In S103, the supply requirement calculation unit 14 calculates the required supply power. In S104, the exclusion unit 15 excludes the power sources with power less than the required supply power from the candidates.

[0020] Next, in S105, the presence or absence of candidate power supplies is determined, and only if candidates exist, in S106 the selection unit 16 selects a power supply from the excluded power supplies, and in S107 the placement / induction control unit 17 performs placement or induction. Therefore, the selection process is always performed only after the exclusion process, and power supplies that were excluded are never selected.

[0021] If no candidate power sources exist in S105, the target load determination unit 13 divides the power supply target load into multiple partial loads according to priority or functional unit in S111. Then, steps S103, S104, S105, S106, and S107 are repeated in the same order for each partial load. Therefore, even when transitioning to partial control, the order of calculating the required power supply, excluding power sources with less than the required power supply, selecting the excluded power sources, and arranging or inducting them is maintained.

[0022] After placement or induction, the reconstruction determination unit 18 calculates the remaining period T_rem(j) for each selected power source j. When the equivalent residual energy is Q_rem(j) and the supplied power assigned to the power source is P_assigned(j), the remaining period T_rem(j) is: T_rem(j) = Q_rem(j) / P_assigned(j) It can be calculated as follows. For generators, etc., the value obtained by converting the remaining fuel amount to electrical energy can be used as Q_rem(j). When considering the efficiency coefficient η(j), T_rem(j) = η(j) × Q_rem(j) / P_assigned(j) That is also acceptable.

[0023] The reconfiguration determination unit 18 starts reconfiguration when the remaining period T_rem(j) is less than the reference period T_th, or when it is predicted that the remaining period will be less than the sum of the movement time and switching time required for relocation. During reconfiguration, the unit calculates the required power supply, excludes power sources with less than the required power supply, and selects the excluded power sources again in the same order for the relevant power supply target load or partial load.

[0024] Furthermore, power sources whose remaining period is less than the aforementioned reference period may be treated as unselected in the next selection, thereby preventing the re-selection of power sources that are expected to shut down in the near future.

[0025] The memory unit 19 stores a load priority table, a power supply priority table by connection point, a reference period T_th, connection availability information for each connection point, and attribute information for each power supply. Therefore, the present invention is implemented not merely as a calculation process, but as a control system that involves actual power supply path switching and power supply connection or movement guidance.

[0026] Although the example given illustrates assigning one power source to each partial load, multiple power sources may be assigned to each partial load for redundancy or alternating operation, as long as each power source meets the required power supply for that partial load.

[0027] Furthermore, the power supply configuration, the number of connection points, the type of load, and the priority setting method can be changed as appropriate, and the present invention can be applied to power supply control during emergencies or times of supply and demand shortages in hospitals, shelters, factories, information and communication facilities, commercial facilities, or event venues. [Examples]

[0028] In the example shown in Figure 3, the first priority load 31 is emergency lighting with a required power of 2.0 kW, and the second priority load 32 is communication equipment with a required power of 3.0 kW; these are designated as the powered loads G_A. The first power source 21 has a supplyable power of 5.0 kW and equivalent residual energy of 20 kWh, the second power source 22 has a supplyable power of 8.0 kW and equivalent residual energy of 40 kWh, and the third power source 23 has a supplyable power of 3.0 kW and equivalent residual energy of 15 kWh.

[0029] At this time, the supply request calculation unit 14 determines the required power supply for G_A, P_req = 2.0 + 3.0 = 5.0kW The calculation is as follows. The excluded section 15 excludes the third power supply 23 from the candidates because 3.0kW < 5.0kW, leaving the first power supply 21 and the second power supply 22 as candidates.

[0030] If the storage unit 19 stores a power priority table for the first connection point 41 in the order "21, 22, 23", the selection unit 16 selects the first power supply 21. The arrangement and induction control unit 17 outputs a switching command to the power supply path switching unit 50 to connect the first power supply 21 to the first connection point 41, and outputs connection guidance to the induction terminal 60 as needed.

[0031] If 5.0kW is allocated to Power Source 21, the remaining period is: T_rem(21) = 20 / 5.0 = 4.0 hours Therefore, if the equivalent residual energy of the first power source 21 is 3.75 kWh after 3.25 hours of operation, T_rem(21) = 3.75 / 5.0 = 0.75 hours As a result, if the reference period T_th is set to 1.0 hour, the reconstruction determination unit 18 starts reconstruction and removes the first power supply 21 from the candidates for next selection. If the exclusion process is performed again using P_req=5.0kW, the third power supply 23 is still excluded and the second power supply 22 is selected. As a result, preparations for switching to the second power supply 22 can be made without interrupting the power supply to the first connection point 41.

[0032] Next, let's assume that the third priority load 33 is an air conditioning system with a required power of 4.0 kW, and that the power-supplied load G_B is the sum of the first priority load 31, the second priority load 32, and the third priority load 33. In this case, the required power supply is: P_req = 2.0 + 3.0 + 4.0 = 9.0kW This is the result.

[0033] Since the first power supply 21 is 5.0kW, the second power supply 22 is 8.0kW, and the third power supply 23 is 3.0kW, the exclusion unit 15 excludes all of these power supplies, which have a supply capacity of less than 9.0kW, from the candidates for the entire load G_B to be powered. At this point, there are no candidate power supplies remaining, so the target load determination unit 13 divides G_B into a high-priority partial load G_1={31,32} and a partial load G_2={33}.

[0034] For partial load G_1, the required power supply is 5.0kW, so the third power supply 23 is excluded, and either the first power supply 21 or the second power supply 22 becomes a candidate. For partial load G_2, the required power supply is 4.0kW, so the third power supply 23 is excluded, and the second power supply 22 becomes a candidate. Therefore, in this embodiment, instead of directly selecting for the entire load, the exclusion process is performed for the entire load to confirm that no candidates remain, and then the calculation, exclusion, and selection of the required power supply are performed again for each partial load in the correct order, so that the first power supply 21 can be placed at the first connection point 41 and the second power supply 22 can be placed at the second connection point 42. [Industrial applicability]

[0035] This invention can be widely used in disaster response facilities, hospitals, evacuation centers, communication facilities, data centers, factories, commercial facilities, shared facilities in apartment buildings, event venues, and other facilities where it is necessary to continue supplying power to priority loads during power outages or periods of tight supply and demand. [Explanation of symbols]

[0036] 1. Power supply placement and induction control system

[0037] 10 Control device

[0038] 11 Load information acquisition section

[0039] 12 Power information acquisition section

[0040] 13. Target Load Determination Unit

[0041] 14 Supply request calculation section

[0042] 15 Exclusion section

[0043] 16 Selection Section

[0044] 17. Arrangement and Guidance Control Unit

[0045] 18 Reconstruction determination unit

[0046] 19 Memory section

[0047] 21 1st power supply

[0048] 22 2nd power supply

[0049] 23 Third power supply

[0050] 30 load groups

[0051] 31 1st priority load

[0052] 32 2nd priority load

[0053] 33 3rd priority load

[0054] 41. First connection point

[0055] 42 Second connection point

[0056] 50 Power supply path switching section

[0057] 60 Guidance terminals

Claims

[Claim 1] A power supply arrangement and induction control system that controls the power supply path between multiple power sources and the load to be powered, A target load determination unit that determines the load to be powered from a plurality of loads with set priorities, A power supply request calculation unit calculates the required power supply to operate the aforementioned powered load, An exclusion unit that obtains the available power supply from each power source and excludes power sources from the candidates that have less than the required power supply, A selection unit that selects at least one power supply from the power supplies that were not excluded by the exclusion unit, A placement / guidance control unit controls the connection destination or placement destination of the power supply selected by the selection unit, and guides the connection or movement of the power supply, so that the power supply selected by the selection unit supplies power to the load to be powered. A reconstruction determination unit that calculates the remaining period of the power supply, Equipped with, The following are performed in this order: determination of the target load by the target load determination unit, calculation of the required power supply by the supply request calculation unit, exclusion of power sources with less than the required power supply by the exclusion unit, selection of the excluded power sources by the selection unit, and arrangement or induction by the arrangement / induction control unit. If the exclusion unit leaves no candidate power sources for the entire load to be powered, the load to be powered is divided into multiple partial loads according to priority, and for each partial load, the calculation of the required power supply, exclusion of power sources with less than the required power supply, selection of the excluded power sources, and placement or induction are performed in the order described above. The reconstruction determination unit monitors the remaining period of the selected power supply after placement or induction, and if the remaining period falls below the reference period, it re-executes the calculation of the required power supply, the exclusion of power supplies with less than the required power supply, and the selection of power supplies after exclusion in the order described above for the partial load or the load to be powered by the selected power supply, thereby reconstructing the system. The reconstruction determination unit excludes power supplies whose remaining period is less than the reference period from the next selection candidates. The arrangement and guidance control unit outputs at least one of the following for the power supply selected by the selection unit or the power supply selected by the reconfiguration: a switching command to the power supply path switching unit and connection destination guidance information to the guidance terminal. A power supply placement and induction control system characterized by the following features.

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