WO2014155625A1 - 電力供給制御装置 - Google Patents
電力供給制御装置 Download PDFInfo
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- WO2014155625A1 WO2014155625A1 PCT/JP2013/059365 JP2013059365W WO2014155625A1 WO 2014155625 A1 WO2014155625 A1 WO 2014155625A1 JP 2013059365 W JP2013059365 W JP 2013059365W WO 2014155625 A1 WO2014155625 A1 WO 2014155625A1
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- load
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- power supply
- loads
- power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/10—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using selector switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2639—Energy management, use maximum of cheap power, keep peak load low
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/58—The condition being electrical
- H02J2310/60—Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
Definitions
- the present invention relates to a power supply control device that controls supply of power from a power supply device to each load.
- the power obtained from the power supply device is small, so that sufficient power to operate all loads was obtained from the power system before the power failure. However, after a power failure occurs, sufficient power may not be obtained from the power supply to operate all loads.
- a technology for limiting the load that supplies power from the power supply device in the event of a power failure is known.
- a power supply system described in Japanese Patent Application Laid-Open No. 2007-236023 divides a plurality of loads of a house into a load group LA and a load group LB, and supplies power from the battery only to the load group LB at the time of a power failure.
- the power supply system sets priorities for a plurality of loads included in the load group LB, and estimates the power reserve based on the remaining capacity of the battery and the estimated power consumption of each load. When it is small, power is supplied only to a load having a high priority.
- control system described in Japanese Patent Application Laid-Open No. 2008-11612 is subject to power supply by the generator unit in order from the power load having the highest priority when the output of the generator unit is lower than the predicted power demand.
- the power load is selected in such a range that the total predicted power demand does not exceed the total output of the generator unit or the like.
- the above-described technique for limiting the load to which power is supplied from the power supply device in the event of a power failure simply specifies the load to which power is to be supplied from the power supply device in the event of a power failure according to priority. For this reason, even though there is a load that can supply power from the power supply device, the load may not be specified as a load to which power is to be supplied from the power supply device because the priority is low.
- the load M1 is first specified as a load to be supplied with power according to the priority order, and then the load M2 is specified as a load to be supplied with power.
- the load M3 is specified as a load to which power is to be supplied, the power supply capability of the power supply apparatus is exceeded, so that the load M3 is not specified as a load to which power is to be supplied.
- the load M4 having a lower priority than the load M3 is not specified as a load to which power is to be supplied.
- the power supply device even if there is no capacity to supply power to the load M3 with high power consumption, it is possible that there is power to supply power to the load M4 with low power consumption. In this case, although there is a load capable of supplying power, supply of power to the load is not realized.
- the process for specifying the load to which power is to be supplied from the power supply apparatus is set with a priority. It is performed only for a load that has not been prioritized.
- the power supply device After performing the process of identifying the load to which power is to be supplied from the power supply device for the load with the priority set, the power supply device has a surplus power, and some of the loads with no priority set have power. However, such power supply is not realized.
- the above prior art has a problem that the power supply to the load at the time of a power failure is restricted more than necessary due to the priority order determined for the load.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to limit the power supply to the load more than necessary when the power system stops such as a power failure because of the priority order determined for the load.
- An object of the present invention is to provide a power supply control device capable of preventing the occurrence of the failure.
- a first power supply control device of the present invention is a power supply control device that controls supply of power from a power supply device to a plurality of loads, and the power supply device includes the plurality of loads.
- a circuit for connecting the power supply device in parallel, a plurality of switches provided in the circuit, each for switching between connection and disconnection between the power supply device and the plurality of loads, and setting a priority order for the plurality of loads A priority order setting unit and one load selected from the plurality of loads according to the priority order, and the total power consumption of the selected load and the load specified as the connection target is the output of the power supply device
- the selected load is specified as a connection target, and the total power consumption of the selected load and the load specified as the connection target is in front If it is not equal to or lower than the output upper limit value, the load specifying process in which the selected load is not specified as a connection target is repeatedly performed on all of the plurality of loads, and the load
- the second power supply control device of the present invention is the above-described first power supply control device of the present invention, wherein the measurement unit that measures the power consumption of each of the loads, and each of the measurement units measured by the measurement unit.
- a storage unit that stores a measurement value of power consumption of the load, and the load specifying unit uses the measurement value of the power consumption of each load measured by the measurement unit and stored in the storage unit. It is characterized by calculating the total power.
- the third power supply control device of the present invention switches whether the power system or the power supply device is connected to each load in the first or second power supply control device of the present invention described above.
- a power switching unit wherein the load identifying unit executes the load identifying process when the power system is shut off and the power supply device is connected to each load by the power switching unit.
- the fourth power supply control device of the present invention is a power supply control device that controls the supply of power from the power supply device to the plurality of loads, and for connecting the plurality of loads in parallel to the power supply device.
- a plurality of switches provided in the circuit, each of which switches between connection and disconnection between the power supply device and the plurality of loads, a part of the plurality of loads as a priority load, and the rest
- a priority setting unit that sets non-priority load and sets priority only for the priority load, and selects one priority load according to the priority, and the priority specified as the selected priority load and connection target
- the selected priority load is identified as a connection target, and the selected priority load Contact If the total power consumption with the priority load specified as the target is not less than or equal to the output upper limit value, the priority load specifying process of not specifying the selected priority load as the connection target is performed for all priority loads.
- the priority load specifying unit that is repeatedly performed, and the priority load specifying unit performs the priority load specifying process on all the priority loads, and then selects one non-priority load in ascending order of power consumption.
- a non-priority load specifying process for specifying a non-priority load as a connection target is repeatedly performed as long as the total power consumption of the selected non-priority load and the load specified as the connection target is equal to or less than the output upper limit value.
- a fifth power supply control device of the present invention is the above-described fourth power supply control device of the present invention, wherein a measurement unit that measures power consumption of each load and each of the measurement units measured by the measurement unit.
- a storage unit that stores a measurement value of power consumption of the load, wherein the priority load specifying unit and the non-priority load specifying unit are measured by the measurement unit and stored in the storage unit. The total power consumption is calculated using the measured values.
- the sixth power supply control device of the present invention switches whether the power system or the power supply device is connected to each load in the above-described fourth or fifth power supply control device of the present invention.
- a power supply switching unit wherein the priority load specifying unit and the non-priority load specifying unit are configured such that when the power system is cut off for each load by the power supply switching unit and the power supply device is connected, the priority is specified.
- the load specifying process and the non-priority load specifying process are executed.
- the present invention it is possible to prevent the power supply to the load from being restricted more than necessary when the power system is stopped due to the priority order determined for the load.
- FIG. It is explanatory drawing which shows the power supply control apparatus by embodiment of this invention with a power supply apparatus, a load, etc.
- FIG. It is explanatory drawing which shows an example of the load management table in the electric power supply control apparatus by embodiment of this invention. It is explanatory drawing which shows the other example of the load management table in the electric power supply control apparatus by embodiment of this invention.
- FIG. 1 shows a power supply control device and the like according to an embodiment of the present invention.
- the power supply control device 1 according to the embodiment of the present invention is configured such that when the supply of power from the power system 2 to the loads L1 to L8 is stopped due to a power failure, the power supply device 3 as the power supply device loads the load L1 to L1. It is a device that controls the supply of power to L8.
- the power supply control device 1 is provided in a consumer and controls power supply to the loads L1 to L8 in the consumer.
- the power supply control device 1 includes a distribution board 4, a personal computer (hereinafter referred to as “PC”) 5, and a switching control device 6.
- PC personal computer
- the power system 2 is connected to the distribution board 4 via an external circuit breaker 7 or the like.
- the power distribution device 3 is connected to the distribution board 4.
- the power supply device 3 is a device that takes out the electric power stored in the storage battery 9 of the electric vehicle 8 and supplies it to the distribution board 4 side, for example.
- a plurality of (for example, eight) loads L1 to L8 are connected to the distribution board 4.
- the loads L1 to L8 include, for example, electric devices such as lighting, fire alarms, refrigerators, air conditioners, and television devices.
- an electric circuit 11 for selectively supplying the power from the power system 2 and the power from the power supply device 3 to the loads L1 to L8 is formed.
- the electric circuit 11 includes a main line 12, and an external circuit breaker 7 connected to the power system 2 and the power supply device 3 are connected to the main line 12 in parallel with each other.
- a branch circuit unit 13 is connected to the trunk line 12.
- the branch circuit unit 13 includes a plurality of lines for connecting a plurality of loads L1 to L8 to the main line 12, and the loads L1 to L8 are respectively connected in parallel to the main line 12 via these lines. ing.
- a load switch 21 that switches between connection and disconnection between the load L 1 and the trunk line 12 is connected in the middle of the line connecting the load L 1 and the trunk line 12.
- the load switch 21 is, for example, a circuit breaker.
- a current transformer (CT) 31 for measuring a current flowing into the load L1 through the line is connected to the line connecting the load L1 and the main line 12.
- load switches 22 to 28 and current transformers 32 to 38 are also connected to lines connecting the loads L2 to L8 and the main line 12, respectively.
- the current transformers 31 to 38 are specific examples of measuring units.
- a power breaker 14 that switches between connection and disconnection between the power system 2 and the trunk line 12 is provided.
- the power breaker 14 is, for example, a wiring breaker with UVT (undervoltage trip device).
- the power breaker 14 is closed during normal operation (when the power system is in operation) and connects between the power system 2 and the trunk line 12, but when power supply from the power system 2 stops due to a power failure, This is detected and automatically opened, and the power system 2 and the trunk line 12 are disconnected.
- a current transformer 15 for measuring a current flowing from the power system 2 to the trunk line 12 is connected to the distribution board 4.
- a closing switch 16 that switches connection and disconnection between the power supply device 3 and the trunk line 12 is provided.
- the closing switch 16 is, for example, a manual switching type switch.
- the closing switch 16 is normally open, and disconnects between the power supply device 3 and the trunk line 12. The user can manually close the input switch 16 to connect the power supply device 3 and the trunk line 12.
- the closing switch 16 is a specific example of the power switching unit together with the power circuit breaker 14.
- the switching control device 6 is a device that controls the distribution board 4 together with the PC 5, and an interface circuit, a control circuit, and the like are provided therein. Connected to the switching control device 6 are a PC 5, a current transformer 15, a power circuit breaker 14, a closing switch 16, current transformers 31 to 38, and load switches 21 to 28.
- the switching control device 6 receives the current values measured by the current transformer 15 and the current transformers 31 to 38 from the current transformer 15 and the current transformers 31 to 38, and outputs them to the PC 5. Further, the switching control device 6 receives the trip signal output from the power breaker 14 and outputs a notification signal corresponding to the received trip signal to the PC 5.
- the switching control device 6 detects on / off of the closing switch 16 and outputs a detection signal corresponding to the detection result to the PC 5. Further, the switching control device 6 receives a command signal output from the PC 5, and outputs a control signal corresponding to the received command signal to the load switch specified by the command signal among the load switches 21 to 28. . The load switch opens and closes according to the control signal.
- the switching control device 6 is a specific example of the switching control unit together with the PC 5.
- the PC 5 includes a CPU (central processing unit) 41 and a storage unit 42. Further, the PC 5 includes an operation input unit 43 including a keyboard and a pointing device, and an information display unit 44 including a display device. Furthermore, the PC 5 has an interface (not shown) for transmitting / receiving information to / from the switching control device 6.
- the CPU 41 performs (a) priority setting processing, (b) power consumption calculation processing, and (c) load identification processing, as will be described later, in accordance with a computer program installed in the PC 5 in advance.
- the storage unit 42 is a storage device such as a hard disk drive device or a flash memory.
- the storage unit 42 stores a load management table (see FIG. 2 or FIG. 3).
- PC 5 is a specific example of a priority order setting unit, a load specifying unit, a priority load specifying unit, and a non-priority load specifying unit.
- a load management table T1 is a table showing the management state of each of the loads L1 to L8.
- the “load number” is information for identifying each of the loads L1 to L8.
- “Priority / non-priority” is information indicating whether each of the loads L1 to L8 is a load with a priority set or a load with no priority set.
- “Priority” is information indicating the priority of each load for which a priority is set.
- Power consumption is a power consumption value of each of the loads L1 to L8.
- “Connection / cutoff” is information indicating whether each of the loads L1 to L8 is connected to the main line 12 or is cut off.
- the “selection flag” is information indicating whether or not each of the loads L1 to L8 has been selected in the load specifying process described later.
- the lower load management table T2 in FIG. 2, the upper load management table T3 in FIG. 3, and the lower load management table T4 in FIG. 4 are the same as the upper load management table T1 in FIG. It is a load management table under different settings or at different points in time, and therefore the values recorded in the load management table are different.
- the power supply control device 1 performs priority order setting processing under the control of the CPU 41 of the PC 5.
- the priority order setting process is a process for setting priority, non-priority setting, and priority order for each of the loads L1 to L8 in accordance with a user input.
- the load to be connected to the trunk line 12 is specified so that the power consumption of the load is less than or equal to the output upper limit value set according to the output capability of the power supply device 3.
- a load with priority set hereinafter referred to as “priority load”
- a load with no priority set hereinafter referred to as “non-priority load”.
- the criteria for specifying the load to be connected to the trunk line 12 are different.
- the priority load to be connected to the trunk line 12 is specified in consideration of the priority set for each priority load. Therefore, the power supply control device 1 performs priority order setting processing in preparation for execution of the load specifying processing, and sets priority, non-priority setting, and priority load for each of the loads L1 to L8 in accordance with user input. Set the priority.
- the CPU 41 of the PC 5 displays a setting input screen for performing priority and non-priority setting inputs and priority order setting inputs for the priority loads for the loads L1 to L8. Is displayed on the information display unit 44.
- the user can operate the operation input unit 43 of the PC 5 while looking at the setting input screen, and can input priority setting, non-priority setting input, and priority setting input regarding the priority loads for each of the loads L1 to L8. .
- the priority and non-priority settings for the loads L1 to L8 and the priority order settings for the priority loads input by the user are stored in the storage unit 42 as a part of the load management table (see FIG. 2 or FIG. 3).
- the user can set priorities for all of the loads L1 to L8, or select some loads from the loads L1 to L8, set priorities for the selected loads, and prioritize the remaining loads. It is possible to set no ranking. It is also possible not to set the priority order for all of the loads L1 to L8. Further, the user can change the priority setting for the loads L1 to L8, the non-priority setting, and the priority setting for the priority load at any time.
- the power consumption calculation process is a process of calculating the power consumption of each of the loads L1 to L8 during normal operation (when the power system is operating) and storing the calculated power consumption in the storage unit 42.
- the power supply control device 1 performs a power consumption calculation process in preparation for execution of the load specifying process, and calculates the power consumption of each of the loads L1 to L8.
- the power consumption calculation process is performed as follows, for example. That is, the current transformers 31 to 38 always measure the current flowing into the loads L1 to L8 for each load, and always output the measured current value to the switching control device 6. Subsequently, the switching control device 6 outputs the current value output from the current transformers 31 to 38 to the PC 5 for each load. Subsequently, the PC 5 receives these current values, and the CPU 41 of the PC 5 calculates the power consumption of the loads L1 to L8 for each load using the received current values. The CPU 41 continuously calculates power consumption for each of the loads L1 to L8, and stores the calculated power consumption value in a temporary storage area of the storage unit 42 at a predetermined time interval (for example, every 1 second).
- the power consumption values of the loads L1 to L8 are accumulated in the temporary storage area of the storage unit 42.
- the CPU 41 refers to the power consumption value of the load L1 accumulated in the temporary storage area of the storage unit 42 every predetermined time, for example, every 10 minutes, and the load L1 accumulated for 10 minutes retroactively from that time point.
- the maximum power consumption value among the power consumption values is specified, and the specified power consumption value is stored in another area of the storage unit 42 as a part of the load management table (see FIG. 2).
- the CPU 41 erases all the power consumption values of the load L1 accumulated in the temporary storage area of the storage unit 42.
- the CPU 41 performs the same process for the power consumption values of the loads L2 to L8 accumulated in the temporary storage area of the storage unit 42. As a result, the maximum power consumption value for the last 10 minutes of the loads L1 to L8 is recorded for each load in the load management table shown in FIG. When the calculation of the power consumption of the load is performed in the load specifying process described later, the latest power consumption value recorded in the load management table is used.
- the load specifying process is a process of specifying a load to which power should be supplied from the power supply device 3 at the time of a power failure.
- the load specifying process is a process for specifying a load to be connected to the main line 12 when the power system is disconnected from the main line 12 due to a power failure and the power supply device 3 is connected to the main line 12. It is.
- FIG. 2 shows the load management table at the start of the load specifying process in the first example
- the lower part of FIG. 2 shows the load management table at the end of the load specifying process in the first example.
- the priorities are set for the loads L1 to L3 among the loads L1 to L8 by the setting input performed in advance by the user, and the priorities are not set for the loads L4 to L8. Therefore, the loads L1 to L3 are priority loads, and the loads L4 to L8 are non-priority loads. Further, priority orders are set in this order for the priority loads L1, L2, and L3.
- the power consumption of the loads L1 to L8 is 500W, 200W, 300W, 300W, 400W, 200W, 100W, and 80W in order.
- one priority load is selected according to the priority order, and the total power consumption of the selected priority load and the load specified as the connection target is set in advance according to the output capability of the power supply device 3.
- the output upper limit value is less than or equal to the output upper limit value, the selected priority load is identified as a connection target, and the priority load is immediately connected to the trunk line 12.
- the total power consumption of the selected priority load and the load specified as the connection target is not less than or equal to the output upper limit value
- the selected priority load is not specified as the connection target. In this case, the priority load is maintained in a state where it is cut off from the trunk line 12.
- the said output upper limit is an appropriate value (for example, 1200 W) below the output rating (for example, 1500 W) of the power supply device 3, for example.
- the process of selecting one non-priority load in ascending order of power consumption and specifying the selected non-priority load as a connection target includes the selected non-priority load and the load specified as the connection target. As long as the total power consumption is less than or equal to the above output upper limit value, it is repeated. If all non-priority loads are selected during that time, the process ends.
- the priority load L1 having the highest priority is selected from the priority loads L1 to L3.
- the priority load L1 there is no load specified as a connection target.
- the total power consumption of the selected priority load and the load specified as the connection target is given priority. It becomes equal to the power consumption of the load L1, and becomes 500W. Since this power consumption is 1200 W or less, which is the output upper limit value, the priority load L1 is specified as a connection target and immediately connected to the trunk line 12.
- the priority load L2 having the second highest priority is selected.
- the load specified as the connection target is the priority load L1.
- the total power consumption of the priority load L2 and the priority load L1 is 700W. Since this power consumption is 1200 W or less, the priority load L2 is specified as a connection target and immediately connected to the trunk line 12.
- the priority load L3 having the third highest priority is selected.
- the loads specified as connection targets are the priority loads L1 and L2.
- the total power consumption of the priority load L3 and the priority loads L1 and L2 is 1000W. Since this power consumption is 1200 W or less, the priority load L3 is specified as a connection target and immediately connected to the trunk line 12.
- the non-priority load L8 with the smallest power consumption is selected from the non-priority loads L4 to L8.
- the loads specified as connection targets are the priority loads L1 to L3.
- the total power consumption of the non-priority load L8 and the priority loads L1 to L3 is 1080W. Since this power consumption is 1200 W or less, the non-priority load L8 is specified as a connection target and immediately connected to the trunk line 12.
- the non-priority load L7 with the second lowest power consumption is selected.
- the loads specified as connection targets are the priority loads L1 to L3 and the non-priority load L8.
- the total power consumption of the non-priority load L7, the priority loads L1 to L3, and the non-priority load L8 is 1180W. Since this power consumption is 1200 W or less, the non-priority load L7 is specified as a connection target and immediately connected to the trunk line 12.
- the non-priority load L6 with the third lowest power consumption is selected.
- the loads specified as connection targets are the priority loads L1 to L3 and the non-priority loads L7 and L8.
- the total power consumption of the non-priority load L6, the priority loads L1 to L3, and the non-priority loads L7 and L8 is 1380W. Since this power consumption exceeds 1200 W, the non-priority load L6 is not specified as a connection target, and a state where it is cut off from the trunk line 12 is maintained. Then, the load specifying process ends.
- the lower load management table T2 in FIG. 2 shows the state of the load management table at this point.
- the power supply device 3 has a surplus power of 200 W. Within the range, the loads L7 and L8 for which priority is not set can be connected.
- the power supply control device 1 has a load that can be connected within the range of the remaining power of the power supply device 3 even after the connection of the load set with the priority is finished. Connect such a load. Therefore, according to the power supply control device 1 of the present invention, it is possible to prevent the power supply to the load during a power failure from being restricted more than necessary due to the priority order determined for the load. In addition, since loads with no priority set are connected in order of increasing power consumption, many loads can be connected.
- FIG. 3 shows the load management table at the start of the load specifying process in the second example
- the lower part of FIG. 3 shows the load management table at the end of the load specifying process in the second example.
- the priorities are set for the loads L1 to L8 by the setting input made in advance by the user. Therefore, the loads L1 to L8 are priority loads, and there is no non-priority load. Further, priority orders are set in this order for the priority loads L1, L2, L3, L4, L5, L6, L7, and L8.
- the power consumption of the loads L1 to L8 is the same as in the first example.
- the priority loads L1 to L8 are specified as connection targets in descending order of priority, and are connected to the trunk line 12, respectively. This process is the same as the process in the first example.
- the priority load L4 having the fourth highest priority is selected.
- the loads specified as connection targets are the priority loads L1 to L3.
- the total power consumption of the priority load L4 and the priority loads L1 to L3 is 1300W. Since this power consumption exceeds 1200 W which is the output upper limit value, the priority load L4 is not specified as a connection target, and a state where it is cut off from the trunk line 12 is maintained.
- the priority load L5 having the fifth highest priority is selected, as in the case of the priority load L4, the priority load L5 is not specified as a connection target and is kept disconnected from the trunk line 12.
- the priority load L6 having the sixth highest priority is not specified as a connection target and is kept disconnected from the trunk line 12.
- the priority load L7 having the seventh highest priority is selected.
- the loads specified as connection targets are the priority loads L1 to L3.
- the total power consumption of the priority load L7 and the priority loads L1 to L3 is 1100W. Since this power consumption is 1200 W or less, the priority load L7 is specified as a connection target and immediately connected to the trunk line 12.
- the priority load L8 having the eighth highest priority is selected.
- the loads specified as connection targets are the priority loads L1 to L3 and L7.
- the total power consumption of the priority load L8 and the priority loads L1 to L3 and L7 is 1180W. Since this power consumption is 1200 W or less, the priority load L8 is specified as a connection target and immediately connected to the trunk line 12.
- the load specifying process is completed.
- the lower load management table T4 in FIG. 3 shows the state of the load management table at this point.
- the loads L1 to L3 are specified according to the priority order, and then the next load L4 is specified according to the priority order.
- the load L4 is specified, the power consumption of the loads L1 to L4 is determined. Therefore, the load L4 is skipped without specifying and an attempt is made to specify a lower priority load.
- the loads L7 and L8 can be identified and connected. Therefore, according to the load specifying process, more loads can be connected as compared to the case where the loads are simply connected according to the priority order.
- step S ⁇ b> 1: YES when the supply of power from the power system 2 is stopped due to a power failure (step S ⁇ b> 1: YES), the power breaker 14 detects this and automatically opens, and the power system 2 and the trunk line 12 are connected. Shut off (step S2).
- a trip signal is output from the power breaker 14 to the switching control device 6, and a notification signal is output from the switching control device 6 to the PC 5 in response to the trip signal.
- the PC 5 recognizes that the power system 2 has stopped based on the notification signal. Subsequently, the PC 5 outputs a command signal instructing to open all the load switches 21 to 28 to the switching control device 6. In response to the command signal, a control signal is output from the switching control device 6 to each load switch 21. In response to the control signal, each load switch 21 to 28 is opened, and all loads L 1 to L 8 are transmitted from the trunk line 12. Blocked. Subsequently, the CPU 41 of the PC 5 turns off the selection flags for all the loads L1 to L8 (step S3).
- step S4 when the user turns on the input switch 16 to start the power supply from the power supply device 3, the switching control device 6 detects that and outputs a detection signal to the PC 5, and the CPU 41 of the PC 5 Recognizes that the closing switch 16 is turned on based on the detection signal (step S4: YES). Subsequently, the CPU 41 determines whether or not the total power consumption of all the loads L1 to L8 is equal to or less than the output upper limit value (step S5). When the total power consumption of all the loads L1 to L8 is equal to or less than the output upper limit value (step S5: YES), the CPU 41 switches the command signal for instructing to close all the load switches 21 to 28. Output to the control device 6.
- a control signal is output from the switching control device 6 to the load switches 21 to 28, the load switches 21 to 28 are closed according to the control signal, and all the loads L1 to L8 are connected to the main line. 12 is connected. Subsequently, the CPU 41 turns on the selection flags for all the loads L1 to L8 (step S6), and ends the load specifying process.
- step S7 determines whether there is a priority load with the selection flag turned off. ). If there is a priority load with the selection flag off (step S7: YES), the CPU 41 selects a priority load with the highest priority from among the priority loads with the selection flag off (step S8).
- the CPU 41 determines whether or not the total power consumption of the priority load selected in step S8 and the load already closed at this time and connected to the trunk line 12 is equal to or less than the output upper limit value. Is determined (step S9).
- the CPU 41 outputs a command signal instructing to close the load switch corresponding to the priority load selected in step S8 to the switching control device 6.
- a control signal is output from the switching control device 6 to the load switch.
- step S8 the load switch corresponding to the priority load selected in step S8 is closed, and the priority load selected in step S8 is connected to the trunk line 12. Subsequently, the CPU 41 turns on the priority load selection flag selected in step S8 (step S10), and returns the process to step S7.
- step S9 NO
- the CPU 41 turns on the priority load selection flag selected in step S8 (step S10), and returns the process to step S7.
- the priority load selected in step S8 is maintained in the state of being cut off from the trunk line 12.
- step S7 determines whether there is a non-priority load with the selection flag turned off, as shown in FIG. (Step S12). If there is a non-priority load with the selection flag turned off (step S12: YES), the CPU 41 selects a non-priority load with the smallest power consumption from the non-priority loads with the selection flag turned off (step S13). ).
- the CPU 41 determines whether or not the total power consumption of the non-priority load selected in step S13 and the load already closed at this time and connected to the trunk line 12 is equal to or less than the output upper limit value. Is determined (step S14).
- CPU41 outputs the command signal which instruct
- a control signal is output from the switching control device 6 to the load switch.
- step S13 the load switch corresponding to the non-priority load selected in step S13 is closed, and the non-priority load selected in step S13 is connected to the trunk line 12. Subsequently, the CPU 41 turns on the selection flag for the non-priority load selected in step S13 (step S15), and returns the process to step S12.
- step S14 NO
- the CPU 41 turns on the selection flag for the non-priority load selected in step S13 (step S16), and ends the load specifying process.
- the non-priority load selected in step S13 is maintained in the state of being disconnected from the trunk line 12.
- the non-priority load that is not selected in the load specifying process is also maintained in a state where it is cut off from the trunk line 12.
- step S12 if there is no non-priority load with the selection flag turned off in step S12 (step S12: NO), the load specifying process ends.
- steps S7 to S11 in FIG. 4 are specific examples of the priority load specifying process
- steps S12 to S16 in FIG. 5 are specific examples of the non-priority load specifying process.
- the power supply control device 1 of the present invention it is possible to prevent the power supply to the loads L1 to L8 from being restricted more than necessary during a power failure because of the priority order determined for the load. Can do. Further, according to the power supply control device 1, the actual power consumption of the loads L1 to L8 is acquired by the current transformers 31 to 38, stored, and stored in the case of a power failure, the loads L1 to L8 acquired immediately before that are stored. It is determined whether or not the loads L1 to L8 are connected to the trunk line 12 using the actual power consumption of L8. Therefore, a load that can be connected can be reliably connected according to a specific situation immediately before a power failure, and flexible and highly accurate power supply control according to various situations can be realized.
- the power supply control device 1 it is possible to recognize the power failure and turn-on switch 16 for connecting the power supply device 3 to the trunk line 12, and automatically perform the load specifying process according to this and connect. A heavy load is connected to the trunk line 12. Therefore, the user can continue to use the load around a high priority load without performing a complicated operation after the occurrence of a power failure.
- the case where the power supply device 3 that takes out the electric power stored in the storage battery 9 of the electric vehicle 8 and supplies it to the distribution board 4 side is used as an example of the power supply device.
- a storage battery or a power generation device may be used as the power supply device.
- the output upper limit value set according to the output capability of the power supply device 3 is used as a reference for determining the load connectable to the trunk line 12, and this output upper limit value is used as the power supply device.
- the output upper limit value may be equal to the output rated value of the power supply device 3. For example, when a storage battery is used as the power supply device, the output upper limit value may be changed according to the remaining amount of the storage battery.
- each time a load is specified as a connection target in the load specifying process the load is immediately connected to the trunk line 12.
- the present invention is not limited to this. For example, after specifying all loads to be connected to the main line 12, all specified loads may be connected to the main line 12.
- the load identifying process is performed at the time of a power failure is taken as an example, but the present invention is not limited to this. You may perform load specific processing, when an electric power system stops for reasons other than a power failure.
- Switching control device switching control unit 7 External circuit breaker 11 Electric circuit (circuit) 12 trunk line 13 branch unit 14 power circuit breaker (power switching unit) 15 Current transformer 16 Input switch (power supply switching part) 21-28 Load switch (switch) 31-38 Current transformer (measurement unit) 41 CPU (priority setting unit, load specifying unit, priority load specifying unit, non-priority load specifying unit) 42 Storage unit L1-L8 Load
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Abstract
Description
図1は、本発明の実施形態による電力供給制御装置等を示している。図1において、本発明の実施形態による電力供給制御装置1は、停電により電力系統2から負荷L1~L8への電力の供給が停止した際に、電源装置としての電源供給装置3から負荷L1~L8への電力の供給を制御する装置である。本実施形態において、電力供給制御装置1は、需要家に設けられ、需要家において負荷L1~L8への電力供給を制御する。
図2の上段は負荷管理テーブルの一例を示している。図2において、負荷管理テーブルT1は各負荷L1~L8の管理状態を示すテーブルである。負荷管理テーブルT1において、「負荷番号」は、負荷L1~L8のそれぞれを識別するための情報である。「優先/非優先」は、各負荷L1~L8が優先順位の設定された負荷であるか、優先順位の設定されていない負荷であるかを示す情報である。「優先順位」は、優先順位が設定された各負荷の優先順位を示す情報である。「消費電力」は、各負荷L1~L8の消費電力値である。「接続/遮断」は、各負荷L1~L8が基幹線路12と接続されているか、遮断されているかを示す情報である。「選択フラグ」は、後述する負荷特定処理において、各負荷L1~L8が選択されたか否かを示す情報である。なお、図2の下段の負荷管理テーブルT2、図3の上段の負荷管理テーブルT3、および図4の下段の負荷管理テーブルT4は、図2の上段の負荷管理テーブルT1と同じものであるが、異なる設定下、あるいは異なる時点の負荷管理テーブルであり、そのため、負荷管理テーブル中に記録された値がそれぞれ異なる。
電力供給制御装置1は、PC5のCPU41の制御のもと、優先順位設定処理を行う。優先順位設定処理は、利用者の入力に従い、各負荷L1~L8についての優先、非優先の設定および優先順位の設定を行う処理である。
また、電力供給制御装置1は、PC5のCPU41の制御のもと、消費電力算出処理を行う。消費電力算出処理は、通常時(電力系統稼働時)において、各負荷L1~L8の消費電力を算出し、算出した各消費電力を記憶部42に記憶する処理である。
また、電力供給制御装置1は、PC5のCPU41の制御のもと、負荷特定処理を行う。負荷特定処理は、停電時に、電源供給装置3から電力を供給すべき負荷を特定する処理である。具体的には、負荷特定処理は、停電により電力系統が基幹線路12から遮断され、かつ電源供給装置3が基幹線路12に接続されたときに、基幹線路12に接続すべき負荷を特定する処理である。
2 電力系統
3 電源供給装置(電源装置)
4 分電盤
5 パーソナルコンピュータ(切換制御部)
6 切換制御装置(切換制御部)
7 外部遮断器
11 電気回路(回路)
12 基幹線路
13 分岐ユニット
14 電源遮断器(電源切換部)
15 変流器
16 投入スイッチ(電源切換部)
21~28 負荷開閉器(開閉器)
31~38 変流器(計測部)
41 CPU(優先順位設定部、負荷特定部、優先負荷特定部、非優先負荷特定部)
42 記憶部
L1~L8 負荷
Claims (6)
- 電源装置から複数の負荷への電力の供給を制御する電力供給制御装置であって、
前記電源装置に前記複数の負荷を並列に接続するための回路と、
前記回路に設けられ、前記電源装置と前記複数の負荷との間の接続、遮断をそれぞれ切り換える複数の開閉器と、
前記複数の負荷に優先順位を設定する優先順位設定部と、
前記複数の負荷の中から前記優先順位に従って1つの負荷を選択し、当該選択された負荷と接続対象として特定されている負荷との消費電力の合計が前記電源装置の出力能力に応じて設定された出力上限値以下である場合には、当該選択された負荷を接続対象として特定し、当該選択された負荷と接続対象として特定されている負荷との消費電力の合計が前記出力上限値以下でない場合には、当該選択された負荷を接続対象として特定しないといった負荷特定処理を、前記複数の負荷のすべてに対して繰り返し行う負荷特定部と、
前記負荷特定部により接続対象として特定された負荷に対応する前記開閉器を切換制御し、当該接続対象として特定された負荷を前記電源装置に接続する切換制御部とを備えていることを特徴とする電力供給制御装置。 - 前記各負荷の消費電力を計測する計測部と、
前記計測部により計測された前記各負荷の消費電力の計測値を記憶する記憶部とを備え、
前記負荷特定部は、前記計測部により計測されて前記記憶部に記憶された前記各負荷の消費電力の計測値を用いて前記消費電力の合計を計算することを特徴とする請求項1に記載の電力供給制御装置。 - 前記各負荷に電力系統を接続するか前記電源装置を接続するかを切り換える電源切換部を備え、
前記負荷特定部は、前記電源切換部により前記各負荷に対して前記電力系統が遮断されかつ前記電源装置が接続されたときに、前記負荷特定処理を実行することを特徴とする請求項1または2に記載の電力供給制御装置。 - 電源装置から複数の負荷への電力の供給を制御する電力供給制御装置であって、
前記電源装置に前記複数の負荷を並列に接続するための回路と、
前記回路に設けられ、前記電源装置と前記複数の負荷との間の接続、遮断をそれぞれ切り換える複数の開閉器と、
前記複数の負荷のうちの一部を優先負荷とし、残部を非優先負荷とし、前記優先負荷に対してのみ優先順位を設定する優先順位設定部と、
前記優先順位に従って1つの優先負荷を選択し、当該選択された優先負荷と接続対象として特定されている優先負荷との消費電力の合計が、前記電源装置の出力能力に応じて設定された出力上限値以下である場合には、当該選択された優先負荷を接続対象として特定し、当該選択された優先負荷と接続対象として特定されている優先負荷との消費電力の合計が前記出力上限値以下でない場合には、当該選択された優先負荷を接続対象として特定しないといった優先負荷特定処理をすべての優先負荷に対して繰り返し行う優先負荷特定部と、
前記優先負荷特定部によりすべての優先負荷に対して前記優先負荷特定処理が行われた後、消費電力の小さい順に1つの非優先負荷を選択し、当該選択された非優先負荷を接続対象として特定する非優先負荷特定処理を、当該選択された非優先負荷と接続対象として特定されている負荷との消費電力の合計が前記出力上限値以下である限り繰り返し行う非優先負荷特定部と、
前記優先負荷特定部および前記非優先負荷特定部により接続対象として特定された負荷に対応する前記開閉器を切換制御し、当該接続対象として特定された負荷を前記電源装置に接続する切換制御部とを備えていることを特徴とする電力供給制御装置。 - 前記各負荷の消費電力を計測する計測部と、
前記計測部により計測された前記各負荷の消費電力の計測値を記憶する記憶部とを備え、
前記優先負荷特定部および前記非優先負荷特定部は、前記計測部により計測されて前記記憶部に記憶された前記各負荷の消費電力の計測値を用いて前記消費電力の合計を計算することを特徴とする請求項4に記載の電力供給制御装置。 - 前記各負荷に電力系統を接続するか前記電源装置を接続するかを切り換える電源切換部を備え、
前記優先負荷特定部および前記非優先負荷特定部は、前記電源切換部により前記各負荷に対して前記電力系統が遮断されかつ前記電源装置が接続されたときに、前記優先負荷特定処理および前記非優先負荷特定処理を実行することを特徴とする請求項4または5に記載の電力供給制御装置。
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- 2013-03-28 US US14/780,309 patent/US20160156195A1/en not_active Abandoned
- 2013-03-28 CN CN201380075093.8A patent/CN105144536A/zh active Pending
- 2013-03-28 WO PCT/JP2013/059365 patent/WO2014155625A1/ja active Application Filing
- 2013-03-28 KR KR1020157030991A patent/KR101756884B1/ko active IP Right Grant
- 2013-03-28 EP EP13880344.0A patent/EP2980952A4/en not_active Withdrawn
- 2013-03-28 JP JP2014513847A patent/JP5586811B1/ja active Active
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Also Published As
Publication number | Publication date |
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JP5586811B1 (ja) | 2014-09-10 |
KR101756884B1 (ko) | 2017-07-11 |
US20160156195A1 (en) | 2016-06-02 |
JPWO2014155625A1 (ja) | 2017-02-16 |
EP2980952A4 (en) | 2016-12-28 |
KR20150136123A (ko) | 2015-12-04 |
CN105144536A (zh) | 2015-12-09 |
EP2980952A1 (en) | 2016-02-03 |
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