JP2009219188A - Power supply control system, power supply controller, and traffic information equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently use a fuel cell while an operation of traffic information equipment is continued even when disaster occurs. <P>SOLUTION: A power supply controller 1 outputs backup power received from the fuel cell 3 to a general power distribution line L3. When disaster occurrence information is received from an information station 5, a disaster occurrence discrimining part discriminates that disaster has occured. A supply destination selecting part switches a supply destination of backup power to the general power distribution line L4 or a backup power distribution line L3. When traffic information equipment 2 detects power failure of commercial power on a commercial power supply line L2, it selects backup power, in place of the commercial power as operating power. A light-emitting part 24 performs light-emitting operation with backup power as the operating power. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power supply control system, a power supply control device, and a traffic information device.

  Due to the recent rapid increase in awareness of the global environment, the number of households in ordinary households introducing household fuel cells and solar power generation facilities is increasing.

  On the other hand, for traffic signals and the like, traffic lights and the like are operated by commercial power (power purchase) purchased from an electric power company. In the event of a power outage due to a disaster or the like, there is a problem that traffic lights are turned off and traffic is disrupted. As a countermeasure, traffic lights with built-in generators are installed at major intersections. However, the traffic lights with built-in generators are expensive, and such traffic lights are not widely used because they require maintenance work such as periodic start-up confirmation tests and fuel quality control. There is a point.

In order to solve such a problem, a traffic management system that supplies power from an emergency fuel cell to a traffic light when a power failure occurs has been considered (for example, see Patent Document 1).
JP 2006-019035 A

  However, although the technique disclosed in Patent Document 1 solves the problems of mechanical start-up test and fuel deterioration, an expensive fuel cell is used only at the time of power failure. It cannot be said that it is appropriate.

  Moreover, if the electric power supplied from the fuel cell installed in each home is always supplied to the traffic light or the like, the fuel cell can be used efficiently. However, there is a problem in that the user cannot freely use all the power supplied from the fuel cell, and the convenience of the user who installed the generator or the like is impaired.

  An object of this invention is to provide the power supply control system, power supply control apparatus, and traffic information apparatus which solve the subject mentioned above.

  In order to solve the above problems, a power supply control system of the present invention includes a power supply control device that outputs first power supplied from a first power source to a general power distribution line, and a second power supplied from a second power source. In a power supply control system configured with a traffic information device that operates using power as power for operation, the power supply control device receives the first power when receiving disaster occurrence information transmitted from the outside. , A supply destination selection unit that outputs to the general distribution line and the backup distribution line, and the traffic information device is connected to the backup distribution line and detects a power outage of the second power. And a power receiving destination selecting unit that selects the first power instead of the second power as the operation power when the power failure detection unit detects a power failure of the second power, Used as operating power to either of the preceding selection portions has selected the first power and said second power, and a traffic information related operation unit for executing a predetermined traffic information related operations.

  In order to solve the above-described problem, the power supply control device of the present invention is a power supply control device that outputs backup power supplied from a backup power source to a general power distribution line. When the occurrence information is received, a supply destination selection unit that outputs the backup power to the general distribution line and the backup distribution line is provided.

  The power supply control device of the present invention can supply commercial power to the traffic information device based on whether a power supply restoration signal is transmitted from the traffic information device that receives the backup power output to the backup distribution line. A power supply state determination unit that determines whether or not the power supply has been restored, and a current detection unit that detects that the backup power is not consumed, and the supply destination selection unit is configured to supply commercial power to the traffic information device. When the current detection unit detects that the backup power is not consumed when the power supply state determination unit determines that the power has been restored, the backup power may be output only to the general distribution line.

  The power supply control device of the present invention measures the current level of the current flowing on the general distribution line when receiving the disaster occurrence information, and based on a comparison between the measured current level and a predetermined reference current level. And a shut-off portion that shuts off the general power distribution line.

  In order to solve the above problems, the traffic information device of the present invention operates using commercial power supplied from a commercial power supply as operating power, and is connected to a backup power distribution line to which backup power is supplied. In the traffic information device, when the power failure detection unit detects a power failure of the commercial power and the power failure detection unit detects the power failure of the commercial power, the operation power is replaced with the commercial power instead of the backup power. A power receiving destination selecting unit that selects power, and a traffic information related operation that executes a predetermined traffic information related operation using either the commercial power or the backup power selected by the power receiving destination selecting unit as operation power And an operation unit.

  The power failure detection unit of the traffic information device according to the present invention detects a power failure after detecting a power failure based on a comparison between a power level of commercial power supplied from a commercial power source and a predetermined power level. When the power supply disappears, a power supply restoration signal indicating that the supply of commercial power has been restored may be transmitted to the power supply control device connected to the backup power distribution line.

  According to the present invention, the power supply control device that outputs the first power supplied from the first power source to the general distribution line, and the traffic that operates using the second power supplied from the second power source as the operating power. In a power supply control system composed of information devices, the power supply control device, when receiving disaster occurrence information transmitted from the outside, outputs the first power to the general distribution line and the backup distribution line. When the traffic information device is connected to the backup power distribution line and detects a power outage of the second power, the traffic information device selects the first power instead of the second power as the power for operation, and the selected first power Since either one of the second electric power is used as the operation electric power and the predetermined traffic information related operation is executed, the operation of the traffic information device is continued even when a disaster occurs, and the fuel cell (the first power supply) Efficiently it can be utilized.

  Hereinafter, a power supply control system (including a power supply control device and a traffic information device) according to an embodiment of the present invention will be described.

  First, the overall configuration of the power supply control system of this embodiment will be described. As shown in FIG. 1, the power supply control system includes a power supply control device 1, a traffic light 2, a fuel cell 3, a commercial power supply 4, an information station 5, a transformer 6, and an electrical device 7. .

  In this example, the case where the user's power generation facility ("first power supply" and "backup power supply") is the fuel cell 3 will be described as an example. A private power generation facility such as a solar power generation facility may be used.

  The power supply control device 1 is installed, for example, in a general household of a user who owns the fuel cell 3.

  The power supply control device 1 outputs the electric power input to the input side (primary side) from the output side (secondary side), thereby causing the traffic light 2 corresponding to a predetermined supply destination (load connected to the output side). And power to the electrical equipment 7).

  On the input side of the power supply control device 1, a “power supply line L1” and a “commercial power supply line L2” are arranged. Further, a “backup distribution line L3” and a “general distribution line L4” are arranged on the output side of the power supply control device 1.

  The power supply line L1 is a wiring for the power supply control device 1 to receive power output from the fuel cell 3 that is the “first power supply”. Hereinafter, the power supplied from the fuel cell 3 to the power supply control device 1 is referred to as “backup power” (“first power”).

  The commercial power supply line L <b> 2 is a wiring for the power supply control device 1 and the traffic light 2 to receive commercial power (“second power”) output from the commercial power source 4 that is the “second power source”.

  The backup power distribution line L3 is a wiring for the traffic light 2 to receive the backup power (first power) output from the power supply control device 1.

  The general power distribution line L4 is a wiring for the electric device 7 to receive each power output from the power supply control device 1 (commercial power from the commercial power source 4 and backup power from the fuel cell 3).

  The power supply control device 1 supplies the backup power supplied from the fuel cell 3 to at least one of the traffic light 2 connected to the backup power distribution line L3 and the predetermined electric device 7 connected to the general power distribution line L4. Output.

  The traffic light 2 is a “traffic information device”, and executes a “predetermined traffic information-related operation” (for example, a lighting operation of a light emitting element instructing start or stop of a vehicle). The traffic light 2 can receive backup power (first power) from the dedicated power transmission line L5 and commercial power (second power) from the commercial power supply line L2 on the input side.

  The traffic light 2 operates with commercial power (second power) supplied from the commercial power supply 4 via the commercial power supply line L2 during normal times (for example, when no disaster has occurred).

  In addition, the traffic light 2 operates with the backup power supplied from the power supply control device 1 via the backup power distribution line L3 when the commercial power supplied from the commercial power supply 4 is interrupted. The traffic information device that receives power from the power supply control device 1 via the backup power distribution line L3 is not limited to the traffic light 2, but may be other predetermined devices (for example, a display device for displaying traffic guidance information). .

  The fuel cell 3 is, for example, a private power generation facility owned by a user individually installed in a general household, and is a “first power source” and a “backup power source”. The fuel cell 3 supplies backup power to the power supply control device 1 via the power supply line L1.

  The commercial power supply 4 is, for example, a power generation facility installed at a power plant operated by an electric power company and capable of generating a large amount of power, and is a “second power source”. The commercial power supply 4 supplies commercial power to the power supply control device 1 and the traffic light 2 via the commercial power supply line L2 when no disaster has occurred.

  The information station 5 transmits disaster occurrence information (for example, general emergency disaster bulletin) indicating that a disaster has occurred via the communication line L6. The information station 5 may be a government agency such as the Japan Meteorological Agency, for example.

  The transformer 6 converts the voltage level of the backup power output from the power supply control device 1 through the backup power distribution line L3 into a voltage level for operating the traffic light 2. Further, the transformer 6 outputs backup power (first power) having the converted voltage level to the traffic light 2 via the dedicated power transmission line L5.

  The electric device 7 is an electric device that receives the backup power and the commercial power output by the power supply control device 1 via the general power distribution line L4 and executes a predetermined operation. The electrical device 7 may be, for example, a general household lighting device, a household electrical appliance (for example, a washing machine, a refrigerator, a television) or an information processing device (for example, a computer), and the number thereof may be an arbitrary natural number.

  Next, the configuration of the power supply control device 1 on the power receiving side of the backup power output from the fuel cell 3 will be described.

  The power supply control device 1 includes a control unit 11, a communication unit 12, a supply destination selection unit 13, a cutoff unit 14, and a current detection unit 15.

  The control part 11 is comprised by CPU (central processing unit) and memory, for example, and controls operation | movement of the electric power supply control apparatus 1 whole. For example, the control unit 11 instructs the supply destination selection unit 13 to select the supply destination of the backup power received from the fuel cell 3 depending on whether disaster occurrence information (disaster emergency bulletin) has been transmitted from the information station 5. Instruct.

  As illustrated in FIG. 2, the control unit 11 includes a disaster occurrence determination unit 111, a power supply state determination unit 112, and a supply destination selection instruction unit 113.

  The disaster occurrence determination unit 111 executes “disaster occurrence determination processing” and determines whether or not a disaster has occurred based on whether or not the communication unit 12 has received the disaster occurrence information transmitted from the information station 5. Determine. The timing at which the disaster occurrence determination unit 111 determines whether or not a disaster has occurred is arbitrary, but in the present embodiment, the disaster occurrence determination processing is executed every predetermined period.

  The disaster occurrence determination unit 111 determines that a disaster has occurred when the communication unit 12 receives the disaster occurrence information transmitted from the information station 5.

  The power supply state determination unit 112 executes “supply state determination processing”, and a “power supply restoration signal” indicating that the supply state of commercial power to the traffic light 2 has shifted from “power failure” to “power supply” On the basis of whether or not the signal has been transmitted, the supply state of commercial power to the traffic light 2 (whether or not commercial power is supplied to the traffic signal 2) is determined.

  When the power supply restoration signal is transmitted from the traffic light 2, the power supply state determination unit 112 shifts the supply state of commercial power to the traffic signal 2 from “power failure” to “powering”, that is, commercial power to the traffic light 2. It is determined that the power supply has been restored.

  The supply destination selection instruction unit 113 executes “supply destination selection instruction processing”, and each determination result by the disaster occurrence determination unit 111 and the power supply state determination unit 112 and a demand state signal described later input from the current detection unit 15 Accordingly, the supply destination selection unit 13 is instructed to select the supply destination of the backup power.

  When the disaster occurrence determination unit 111 determines that a disaster has occurred, the supply destination selection instruction unit 113 sets the backup power supply destination (output destination) output from the fuel cell 3 to the backup power distribution line L3 and the general purpose. Instruct the power distribution line L4 to select.

  The supply destination selection instruction unit 113 then backs up the traffic signal 2 when the power supply state determination unit 112 determines that the supply state of the commercial power to the traffic signal 2 has shifted from “power failure” to “power supply”. When a demand state signal indicating that power is not consumed is input from the current detector 15, an instruction is given to select only the general power distribution line L4 as the supply destination of the backup power output from the fuel cell 3. To do. At this time, the supply destination selection unit 13 releases the connection to the backup power distribution line L3 while maintaining the connection to the general power distribution line L4.

  It should be noted that the memory (not shown) of the control unit 11 has a demand for backup power via the backup power distribution line L3 (the supply signal 2 of the supply destination is consuming backup power). “Demand presence / absence determination information 114” for 15 to detect is stored. The format of the demand presence / absence determination information 114 is not particularly limited. The memory is used for storing disaster occurrence information received from the information station 5 by the communication unit 12.

  The communication part 12 is comprised with a communication module, for example. The communication unit 12 executes “communication processing” and receives the disaster occurrence information transmitted from the information station 5 through the communication line L6.

  The supply destination selection part 13 is comprised with a switch, for example. The supply destination selection unit 13 executes “supply destination selection processing” and selects a supply destination of the backup power output from the fuel cell 3 in accordance with an instruction from the supply destination selection instruction unit 113.

  More specifically, the supply destination selection unit 13 selects any one of the backup power supply line L3 and the general power distribution line L4 as the backup power supply destination and the general power distribution line L4 alone. Choose. In other words, when the backup power distribution line L3 and the general power distribution line L4 are selected, the supply destination selection unit 13 outputs the backup power (first power) to the general power distribution line L4 and the backup power distribution line L3. To do.

  The interruption | blocking part 14 is comprised with a breaker, for example, and at the time of disaster occurrence, it limits the electric power demand by the electric equipment 7, and plays the role which avoids the reduction | decrease of the backup electric power supplied to the signal apparatus 2. FIG.

  The shut-off unit 14 executes “shut-off process” and measures the current level of the current flowing on the general power distribution line L4 when the disaster occurrence determination unit 111 determines that a disaster has occurred. Based on the comparison between the measured value of the current level of the current flowing on the general distribution line L4 and a predetermined reference current level (for example, a predetermined reference current value), the interrupting unit 14 The general power distribution line L4 for supplying backup power is shut off. For example, when the measured value of the current level on the general distribution line L4 is larger than a predetermined reference current level (for example, the reference current value) as a result of the comparison, the blocking unit 14 blocks the general distribution line L4. To do.

  The current detection unit 15 is configured by, for example, a current detector. On the output side of the current detector 15, a backup power distribution line L <b> 3 for supplying backup power to the traffic light 2 is disposed.

  The current detection unit 15 executes “current detection processing”, measures the current level (for example, current value) of the current flowing on the backup distribution line L3, and monitors the measured current level (current value). Thereby, the current detection unit 15 determines whether or not there is a demand for backup power at the connection destination of the backup power distribution line L3 (whether or not the backup power output on the backup power distribution line L3 is consumed).

  Here, the method for detecting whether or not there is a demand for backup power is not limited. For example, the current value (current level) in the backup distribution line L3 measured by the current detection unit 15 and the “predetermined reference current level”. A general detection method that detects the presence or absence of demand (consumption) of backup power based on a comparison result with a predetermined reference current value (for example, “0”) may be used. In this case, a predetermined reference current value (for example, “0”) is registered in advance in the demand presence / absence determination information 114. The current detection unit 15 compares the measured value of the current level of the current flowing on the backup power distribution line L3 with a predetermined reference current level. As a result of the comparison, the current level on the backup power distribution line L3 is the reference current level. When it is determined that the backup power is below, it is detected that the backup power (first power) is not consumed. When detecting that it is not consumed, the supply destination selection unit 13 selects the general power distribution line L4 as the supply destination of the backup power.

  Note that the current detection unit 15 displays a “demand state signal” indicating a state of demand for backup power (whether or not there is demand) in accordance with a result of detection of demand for backup power (a result of detection that the first power is not consumed). ”Is output to the supply destination selection instruction unit 113.

  For example, when the current detection unit 15 detects that there is a demand for backup power (when the traffic light 2 consumes backup power by operating using the backup power), there is a demand for backup power. A demand state signal indicating this is output to the supply destination selection instruction unit 113. For example, when it is detected that there is no demand for backup power, a demand state signal indicating that is output to the supply destination selection instruction unit 113.

  Next, the configuration of the traffic light 2 will be described in detail.

  As shown in FIG. 1, the traffic light 2 includes a control unit 21, a power failure detection unit 22, a power receiving destination selection unit 23, and a light emitting unit 24. Hereinafter, the power for the light emitting unit 24, which is the “traffic information related operation unit”, to perform the light emitting operation is referred to as “operation power”.

  The control part 21 is comprised by CPU (central processing unit) and memory, for example, and controls operation | movement of the signal apparatus 2 whole.

  As illustrated in FIG. 3, the control unit 21 includes a power receiving destination selection instruction unit 211.

  The power receiving destination selection instructing unit 211 executes “power receiving destination selection instructing process”, and uses the dedicated power transmission line L5 and commercial power supply as a power receiving destination of the operating power supplied to the light emitting unit 24 based on a power supply state signal described later. The power receiver selection unit 23 is instructed to select one of the lines L2. As described above, the dedicated power transmission line L5 is connected to the backup power distribution line L3 via the transformer 6.

  For example, the power receiving destination selection instructing unit 211 instructs the power receiving destination selecting unit 23 to select the dedicated power transmission line L5 as the power receiving destination when a power supply state signal indicating that the commercial power is in a power failure is input.

  In addition, for example, the power receiving destination selection instruction unit 211 instructs the power receiving destination selection unit 23 to select the commercial power supply line L2 as a power receiving destination when a power supply state signal indicating that commercial power is being supplied is input. To do.

  The memory (not shown) of the control unit 21 stores “power supply state determination information 212” for the power failure detection unit 22 to detect that the commercial power supplied from the commercial power source 4 is in a power failure. ing. The format of the power supply state determination information 212 is not particularly limited.

  The power failure detection unit 22 is configured to supply commercial power from the commercial power source 4 based on the commercial power level (for example, power value) received from the commercial power source 4 via the commercial power distribution line L2. Is detected), a power failure in the commercial power supply line L2 is detected.

  Here, the power failure detection method is not limited. For example, based on the result of the magnitude comparison between the power value of the commercial power received from the commercial power supply 4 and a predetermined reference power value (for example, “0”), The general detection method which detects the power failure of commercial power may be sufficient. In this case, a predetermined reference power value (for example, “0”) is registered in advance in the power supply state determination information 212. The power failure detection unit 22 compares the measured value of the power level of the commercial power with a predetermined reference power level (reference power value). As a result of the comparison, the power level on the commercial power supply line L2 is less than or equal to the reference power level. When it is determined that there is a power failure, it is detected that the commercial power (second power) is out of power. When it is detected that a power failure is occurring, the power receiving destination selecting unit 23 selects the dedicated power transmission line L5 to which the backup power (first power) is supplied as the power receiving destination for the operation power.

  The power failure detection unit 22 indicates the supply state of commercial power (power supply or power failure) according to the detection result that the supply of commercial power from the commercial power source 4 (second power source) is stopped (power failure). A “power supply state signal” that is a signal is output to the control unit 21. For example, when the power failure detection unit 22 detects a power failure of the commercial power, the power failure detection unit 22 outputs a power supply state signal indicating that the commercial power from the commercial power source 4 is in a power failure.

  Further, when the supply state of the commercial power shifts from “power failure” to “power feeding”, the power failure detection unit 22 controls the power supply control through the data line L7 to indicate that the commercial power has been restored. It transmits to the control part 11 of the apparatus 1.

  The power receiving destination selection unit 23 selects either backup power or commercial power as the operation power for the light emitting unit 24.

  The power receiving destination selecting unit 23 selects the commercial power supply line L2 as the power receiving destination of the operating power when the power failure detecting unit 22 does not detect a commercial power outage. That is, when commercial power is supplied, the power receiving destination selecting unit 23 outputs the commercial power input from the commercial power supply 4 via the commercial power supply line L2 to the light emitting unit 24.

  In addition, when the power failure detection unit 22 detects a power outage of commercial power, the power receiving destination selection unit 23 is a dedicated power transmission line L5 connected to the backup power distribution line L3 via the transformer 6 as a power receiving destination for operation power. Select. That is, at the time of a commercial power failure, the power receiving destination selection unit 23 outputs the backup power output from the power supply control device 1 to the backup power distribution line L3 to the light emitting unit 24.

  The light-emitting unit 24 is a “traffic information-related operation unit” that is configured by a light-emitting element such as an LED and that performs a light-emitting operation based on the operation power supplied via the power receiving destination selection unit 23. The control unit 21 may control the light emitting operation state of the light emitting unit 24 so that the light emitting operation state is continuously turned on or blinked.

  Next, the power supply control system having the above-described configuration is used as a backup power supply destination (output destination) according to the determination result of the disaster occurrence, the commercial power supply state to the traffic light 2, and the backup power consumption state. The “power supply control process” for selecting the traffic light 2 or the traffic light 2 and the electric device 7 will be described.

  As a premise for explanation, it is assumed that the information station 5 has not transmitted disaster occurrence information and the commercial power source 4 is supplying commercial power.

  First, the operation of the power supply control device 1 when performing a series of power supply control processes will be described.

  In the power supply control device 1, in a normal time when no disaster has occurred (when no disaster occurrence information is transmitted from the information station 5), the disaster occurrence determination unit 111 performs a disaster by “disaster occurrence determination processing”. It is determined that it is not. At this time, the supply destination selection instruction unit 113 instructs the supply destination selection unit 13 to select the general power distribution line L4 as the supply destination of the backup power output from the fuel cell 3 by the “supply destination selection instruction process”. To do.

  As illustrated in FIG. 4, the supply destination selection unit 13 executes “supply destination selection processing (step S <b> 11)” according to the instruction of the supply destination selection instruction unit 113 and selects the general power distribution line L <b> 4 as the supply destination of backup power. To do. As a result, the backup power output from the fuel cell 3 is supplied to the electrical equipment 7 connected to the general power distribution line L4. In this state, the supply destination selection unit 13 maintains the supply of the commercial power output from the commercial power supply 4 via the commercial power supply line L <b> 2 to the electric device 7.

  The connection state in the supply destination selection unit 13 when the general power distribution line L4 is selected as the backup power supply destination by the supply destination selection process (step S11) is shown in the supply destination selection unit 13 of FIG. Shown in solid line.

  Here, the disaster occurrence determination unit 111 executes the “disaster occurrence determination process (step S12)”, and determines whether the communication unit 12 has received the disaster occurrence information transmitted from the information station 5, thereby Determine whether or not

  When the disaster occurrence determination unit 111 determines that a disaster has occurred, the supply destination selection instruction unit 113 instructs the supply destination selection unit 13 to select the backup power distribution line L3 and the general power distribution line L4.

  The supply destination selection unit 13 executes “supply destination selection processing (step S13)”, and selects the backup power distribution line L3 and the general power distribution line L4 as backup power supply destinations according to the instruction of the supply destination selection instruction unit 113. To do. Accordingly, the backup power output from the fuel cell 3 is supplied not only to the electric device 7 connected to the general power distribution line L4 but also to the traffic light 2 connected to the backup power distribution line L3.

  The connection state in the supply destination selection unit 13 when the backup power distribution line L3 and the general power distribution line L4 are selected as the backup power supply destination by the supply destination selection process (step S13) is shown in FIG. This is indicated by a solid line in the first selection unit 13.

  Thereafter, the power supply state determination unit 112 executes “supply state determination processing (step S14)”, and the supply of commercial power to the traffic light 2 is restored based on whether or not a power supply restoration signal is transmitted from the traffic light 2. It is determined whether or not. When the traffic light 2 detects the restoration of the supply of commercial power and a power supply restoration signal indicating that is transmitted, the power supply state determination unit 112 determines that the supply of commercial power to the traffic light 2 has been restored (step) S14; Yes).

  Subsequently, the current detection unit 15 executes “current detection processing (step S15)”, and based on the current value on the backup distribution line L3 measured by itself, the traffic signal 2 has no demand for backup power. Determine if. When the traffic light 2 determines that there is no demand for backup power, the current detection unit 15 outputs a demand state signal indicating that there is no demand for backup power to the supply destination selection instruction unit 113.

  In the supply destination selection instruction unit 113, the power supply state determination unit 112 determines that the supply of commercial power to the traffic light 2 has been restored, and a demand state signal indicating that the traffic light 2 is not consuming backup power is a current detection. In response to the output from the unit 15, “supplier selection instruction processing” is executed. The supply destination selection instruction unit 113 instructs the supply destination selection unit 13 to select the general power distribution line L4 as the supply destination of the backup power.

  The supply destination selection unit 13 executes “supply destination selection processing (step S16)” according to the instruction of the supply destination selection instruction unit 113, and selects only the general power distribution line L4 as the supply destination of backup power. Thereby, when a disaster recovers, backup power is supplied only to the electric equipment 7 via the general power distribution line L4 used in normal times. The operation in the power supply control device 1 when performing a series of power supply control processes is thus completed.

  Next, the operation of the traffic light 2 when performing a series of power supply control processes will be described.

  When a commercial power failure has not occurred, the power failure detection unit 22 of the traffic light 2 detects that the commercial power has not failed due to the “power failure detection process”. At this time, the power receiving destination selection instructing unit 211 instructs the power receiving destination selecting unit 23 to select the commercial power supply line L2 as the power receiving destination of the operation power of the light emitting unit 24.

  As illustrated in FIG. 5, the power receiving destination selection unit 23 executes “power receiving destination selection processing (step S <b> 21)” in accordance with an instruction from the power receiving destination selection instruction unit 211, and selects the commercial power supply line L <b> 2 as the power receiving destination. Thereby, the commercial power output from the commercial power supply 4 is supplied to the light emitting unit 24 connected to the commercial power supply line L2.

  The connection state in the power receiving destination selection unit 23 when the commercial power supply line L2 is selected as the power receiving destination for the operation power by the power receiving destination selection process (step S21) is shown in FIG. Indicated by the solid line.

  Thereafter, the power failure detection unit 22 executes “power failure detection process (step S22)”, and determines whether or not the supply of commercial power from the commercial power source 4 to the traffic light 2 is stopped. When it is determined that the supply of commercial power from the commercial power source 4 to the traffic light 2 has been stopped, a power supply state signal indicating a commercial power outage is output.

  The power receiving destination selection instructing unit 211 receives the backup power output from the power transmission dedicated line L5 as the operation power supplied to the light emitting unit 24 in response to the input of the power supply state signal indicating that a power failure is occurring. The power receiver selection unit 23 is instructed to select.

  The power receiving destination selecting unit 23 executes “power receiving destination selecting process (step S23)”, and selects the dedicated power transmission line L5 according to the instruction of the power receiving destination selecting instruction unit 211. As a result, the backup power supplied by the power supply control device 1 via the backup power distribution line L3 is supplied to the light emitting unit 24.

  The connection state in the power receiving destination selection unit 23 when the dedicated power transmission line L5 is selected as the power receiving destination for the operation power by the power receiving destination selection process (step S23) is shown in FIG. Shown in solid line. Thereby, even if commercial power is during a power failure, the light emission operation of the light emitting unit 24 is continued, and the operation of the traffic light 2 is continued.

  Thereafter, the power failure detection unit 22 repeatedly executes the “power failure detection process (step S24)” every predetermined period. When the power failure detection unit 22 detects that the supply of commercial power from the commercial power source 4 has not been restored (power recovery) (step S24; No), the supply of backup power through the backup power distribution line L3 is maintained. .

  When the supply of commercial power from the commercial power source 4 is restored (recovered), the power failure detection unit 22 detects that the commercial power has been restored (step S24; Yes), and indicates that there is no commercial power failure (during power supply). The power supply state signal shown is output to the power receiving destination selection instruction unit 211.

  The power receiving destination selection instructing unit 211 instructs the power receiving destination selecting unit 23 to select the commercial power supply line L2 in response to the input of the power supply state signal indicating that there is no power failure.

  The power receiving destination selecting unit 23 executes “power receiving destination selecting process (step S25)”, and selects the commercial power supply line L2 in accordance with an instruction from the power receiving destination selecting instruction unit 211. As a result, when the commercial power is restored, the commercial power output via the commercial power supply line L <b> 2 that is normally used is supplied to the light emitting unit 24.

  Further, when the supply of commercial power is restored, the power failure detection unit 22 changes the supply state of commercial power from “during power failure” to “powering” via the data line L7. A power supply restoration signal indicating the restoration is transmitted to the control unit 11 of the power supply control device 1 (step S26).

  As described above, according to the embodiment of the present invention, the power supply control system includes a first power source (for example, a fuel cell or a solar power generation facility) installed in a home and an information station 5 (for example, the Japan Meteorological Agency). In combination with disaster occurrence information (emergency disaster bulletins) sent from government agencies, etc., private power generation facilities (fuel cell 3 and solar power) that are spreading in the home only when a power outage is likely to occur Backup power supplied from a power generation facility or the like is preferentially supplied to the traffic light 2.

  Thereby, it is possible to continue the lighting operation by the traffic light and the display operation of the traffic information by the display device even at the time of a commercial power failure, and to reduce the loss of convenience for the user.

  As a result, power supply backup (supply of backup power) to traffic information devices such as traffic lights can be implemented economically, and traffic disruption due to a disaster blackout can be suppressed.

  Various modifications can be made without departing from the scope of the present invention.

  In the above-described explanation example, the case where all the components 21 to 24 are stored in the housing of the traffic light 2 (“traffic information device”) has been described as an example, but the configuration of the traffic light 2 is limited to this. Absent. For example, a housing that stores the components 21 to 23 that play a role in controlling the supply of power for operation and a component (light emitting unit 24) that performs a predetermined operation by being supplied with power for operation are stored. The traffic light 2 may be configured separately from the housing.

It is a figure which shows the structure of the electric power supply control system according to embodiment of this invention. It is a figure which shows the structure of the control part which the electric power supply control apparatus shown in FIG. 1 has. It is a figure which shows the structure of the control part which the traffic signal (traffic information apparatus) shown in FIG. 1 has. It is a flowchart which shows operation | movement of a power supply control apparatus at the time of performing the power supply control in the power supply control system of this invention. It is a flowchart which shows operation | movement of a traffic light at the time of performing the power supply control in the power supply control system of this invention. It is a figure which shows the 1st example of the connection state in an electric power supply control system. It is a figure which shows the 2nd example of the connection state in an electric power supply control system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply control apparatus 2 Traffic light 3 Fuel cell 4 Commercial power supply 5 Information station 6 Transformer 7 Electric equipment 11 Control part 12 Communication part 13 Supply destination selection part 14 Blocking part 15 Current detection part 111 Disaster occurrence determination part 112 Power supply state determination part 113 Supply destination selection instruction unit 114 Demand presence / absence determination information 21 Control unit 22 Power failure detection unit 23 Power reception destination selection unit 24 Light emitting unit 211 Power reception destination selection instruction unit 212 Power supply state determination information L1 Power supply line L2 Commercial power supply line L3 Backup power distribution Line L4 General power distribution line L5 Dedicated power transmission line L6 Communication line L7 Data line

Claims (6)

The power supply control device that outputs the first power supplied from the first power source to the general distribution line, and the traffic information device that operates using the second power supplied from the second power source as the operating power. In the power supply control system
The power supply control device includes:
When receiving the disaster occurrence information transmitted from the outside, having a supply destination selection unit that outputs the first power to the general distribution line and the backup distribution line,
The traffic information device is connected to the backup power distribution line,
A power failure detection unit for detecting a power failure of the second power;
When the power failure detection unit detects a power failure of the second power, as the operation power, instead of the second power, a power receiving destination selection unit that selects the first power;
Power supply control including a traffic information related operation unit that executes a predetermined traffic information related operation using either the first power or the second power selected by the power receiving destination selection unit as operation power system. A power supply control device that outputs backup power supplied from a backup power source to a general distribution line,
A power supply control apparatus comprising: a supply destination selection unit that outputs the backup power to the general power distribution line and the backup power distribution line when disaster occurrence information transmitted from the outside is received. Based on whether a power supply restoration signal has been transmitted from the traffic information device receiving the backup power output to the backup power distribution line, it is determined whether or not the supply of commercial power to the traffic information device has been restored. A power supply state determination unit;
A current detection unit for detecting that the backup power is not consumed,
The supplier selection unit
When the power supply state determination unit determines that the supply of the commercial power to the traffic information device has been restored, the backup power is detected when the current detection unit detects that the backup power is not consumed. The power supply control device according to claim 2, wherein the power supply control device is output only to the general power distribution line.   When the disaster occurrence information is received, the current level of the current flowing on the general distribution line is measured, and the general distribution line is cut off based on a comparison between the measured current level and a predetermined reference current level. The power supply control device according to claim 2, further comprising: a blocking unit that performs the operation. A traffic information device that operates using commercial power supplied from a commercial power source as operating power and is connected to a backup power distribution line to which backup power is supplied,
A power failure detection unit that detects a power failure of the commercial power;
When the power failure detection unit detects a power failure of the commercial power, as the operating power, instead of the commercial power, a power receiving destination selection unit that selects the backup power,
A traffic information device including a traffic information related operation unit that performs a predetermined traffic information related operation using either the commercial power or the backup power selected by the power receiving destination selection unit as operation power. The power failure detection unit is
Based on a comparison between a power level of the commercial power supplied from the commercial power source and a predetermined power level, after detecting a power failure of the commercial power,
The power supply restoration signal indicating that the supply of the commercial power is restored when the power failure is no longer detected is transmitted to a power supply control device connected to the backup power distribution line. Traffic information equipment as described in.

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