JP6396104B2 - Supervisory control device, supervisory control method, and program - Google Patents

Description

  Embodiments described herein relate generally to a monitoring control device, a monitoring control method, and a program.

  For building facilities such as buildings, as power sources necessary for commercial power outages when the power supply from the power company has ceased, for example, (1) Safety power source stipulated in the electrical equipment technical standards, (2) Emergency power source under the Fire Service Act, (3) Preliminary power sources in the Building Standard Law are stipulated. (1) is a security power source or a business power source for maintaining the function of the electrical equipment. (2) is an emergency power supply for maintaining the functions of fire fighting equipment (fire hydrant, sprinkler, fire smoke exhausting equipment, etc.). The Fire Service Act stipulates that this emergency power supply can be operated continuously for 60 minutes or more at the rated load, that the fuel oil has a capacity of 2 hours or more, and that the voltage is established within 40 seconds. (3) is a reserve power supply for maintaining the functions of disaster prevention facilities (emergency lighting, smoke exhausters, etc.). The Building Standard Law stipulates that this standby power supply can be operated continuously for 30 minutes or more at the rated load, and that voltage is established within 40 seconds.

  Conventionally, after power is supplied to fire-fighting equipment and disaster prevention equipment (hereinafter referred to as “emergency load”) by an emergency power generator, etc. during a commercial power outage, power is also supplied to other security loads. Many. There are cases where self-load control is performed during the operation. In the self-loading load control, the surplus capacity is supplied to a load other than the emergency load after power generated by the emergency generator is supplied to the emergency load. At this time, on / off control of a load other than the emergency load is performed so that power is not supplied to a load exceeding the power generation capacity of the emergency generator.

  As described above, self-generated load control is an operation that uses the power generation capacity of the emergency generator as efficiently as possible so that power can be supplied to as many loads as possible without exceeding the power generation capacity of the emergency generator. I do. However, when commercial power outages continue and fuel cannot be replenished, proper operation may be required in consideration of the remaining fuel.

JP 2009-197696 A

  The problem to be solved by the present invention is to provide a monitoring control device, a monitoring control method, and a program capable of appropriately operating a generator based on an operation continuation target time and remaining fuel.

The monitoring control device of the embodiment includes a storage unit, a reception unit, and an operation time control calculation unit. The storage unit stores the load capacity and priority order of a plurality of power loads, and the relationship between the power generated by the generator and the fuel consumption per unit time. The receiving unit receives the remaining fuel amount of the generator. The operation time control calculation unit is configured so that the generator continues the target time based on the relationship between the generated power of the generator stored in the storage unit and the fuel consumption per unit time and the remaining fuel amount received by the receiving unit. The target generated power for power generation is calculated, and the power load to be operated is selected according to the priority order so that the total load capacity of the operating power load is within the target generated power. The operation time control calculation unit outputs an error when the target generated power is lower than the lower limit value.

The block diagram of the monitoring control system of embodiment. The functional block diagram of the supervisory control slave station of embodiment. The functional block diagram of the supervisory control master station of embodiment. The functional block diagram of the monitoring control terminal of embodiment. The figure which shows the load management data of embodiment. The figure which shows the relationship between the output of the generator of embodiment, and the fuel consumption per unit time. The figure which shows the control setting input screen which the monitoring control terminal of embodiment displays. The figure which shows the control status display screen which the monitoring control terminal of embodiment displays. The flowchart which shows the monitoring control process of the monitoring control system of embodiment. The flowchart which shows the operation time control process of the monitoring control system of embodiment. The flowchart which shows the rated operation control process of the monitoring control system of embodiment. The flowchart which shows the operation continuation time calculation process of the monitoring control system of embodiment.

  Hereinafter, a monitoring control device, a monitoring control method, and a program according to embodiments will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a monitoring control system according to an embodiment. The monitoring control system shown in the figure includes a monitoring control slave station 10, a monitoring control slave station 20, a monitoring control master station 30, and a monitoring control terminal 40. The supervisory control slave station 10, supervisory control slave station 20, supervisory control master station 30, and supervisory control terminal 40 are connected to a supervisory control network 90 using TCP (Transmission Control Protocol) / IP (Internet Protocol) or the like. Is done.

  The supervisory control slave station 10 monitors and controls the commercial power receiving / transforming equipment 51 and the power generation equipment 52 that generates power during a commercial power failure. The power generation facility 52 includes a generator that generates power using fuel. The supervisory control slave station 20 performs monitoring and control with respect to an electric load (hereinafter referred to as “load”) such as the emergency load 61 and the security / general load 62. In the figure, one emergency load 61 and one security / general load 62 are shown, but a plurality of emergency loads 61 and security / general loads 62 may be provided. The emergency load 61 is, for example, a fire fighting facility or a disaster prevention facility. The safety / general load 62 is a safety load or a general load other than the emergency load. While commercial power is being supplied, power is supplied from the receiving / transforming equipment 51 to the emergency load 61 and the security / general load 62. When supply of commercial power is stopped due to a power failure, power is supplied from the power generation facility 52 to the emergency load 61 and the security / general load 62. The power receiving / transforming equipment 51, the power generation equipment 52, the emergency load 61, and the security / general load 62 are equipment to be monitored and controlled in the monitoring control system.

  The supervisory control system includes a power failure state signal input from the power receiving / transforming facility 51, a generated power signal input and remaining fuel signal input from the power generation facility 52, an input state signal input from the emergency load 61 and the safety / general load 62, and safety.・ Minimum capture of the on / off control signal output to the general load 62 as the monitoring control target signal. The power failure state signal is a signal for notifying a power failure or power recovery. The generated power signal is a signal for notifying the measured value of the generated power of the generator included in the power generation facility 52. The remaining fuel signal is a signal for notifying the remaining fuel amount of the power generation facility 52. The input state signal is a signal for notifying whether the load is on (on) or off (off). The on / off control signal is a signal for controlling on or off of the load.

  The supervisory control slave station 10 and the supervisory control slave station 20 send and receive signals to and from the management target facility through contact and analog communication, communication by various transmissions, and the like. The supervisory control slave station 10 and the supervisory control slave station 20 exchange signals with the supervisory control master station 30 and the supervisory control terminal 40 via the supervisory control network 90.

The supervisory control system of the present embodiment performs control that takes into consideration the balance between the generator continuation possible time and the importance of the load to be supplied with power, which has not been conventionally performed.
For example, a commercial power outage may occur due to a major earthquake and the like, and it may become impossible to expect the fuel supply of the emergency generator for a while. In such a situation, it is required to extend the operation continuation time of the emergency generator even if the load for supplying power is limited, rather than the operation that maximizes the efficiency of the emergency generator. There is a case. The supervisory control system of the present embodiment determines the importance of the safety / general load 62 and the time during which the generator can continue to operate with the remaining fuel when the safety / general load 62 is supplied in addition to the emergency load 61. In addition, the on / off control of the security / general load 62 is performed.

  In addition, in the conventional generator monitoring, there are the following two main methods for calculating the generator continuation possible time. The first method is a calculation method based on the rating of the generator and the remaining fuel amount. For example, when the rating is 250 kW, the remaining fuel is 180 L, and the fuel required for the output of 250 kW is 60 L per hour, the operation continuation possible time is calculated as 3 hours. The second method is a method of calculating the operation continuation time from the amount of fuel consumed in the latest fixed time after the generator establishes voltage and starts supplying power to the power load, and the remaining fuel amount. is there. In such a conventional calculation method, the first method cannot calculate the generator operation continuation time when control is performed to suppress the output of the generator in order to increase the operation continuation time. In the second method, the operation cannot be performed unless the operation with the output actually suppressed is performed for a certain period of time. Therefore, the supervisory control system of the present embodiment enables calculation in advance of the generator operation continuation possible time when the operation is performed with a load lower than the rated value without actually operating.

  FIG. 2 is a functional block diagram showing an internal configuration of the supervisory control slave station 10, and only functional blocks related to the present embodiment are extracted and shown. The supervisory control slave station 20 has the same configuration as the supervisory control slave station 10. The supervisory control slave station 10 includes a signal input / output unit 11, a signal conversion processing unit 12, and a communication processing unit 13. The signal input / output unit 11 exchanges signals with the monitoring control target equipment. The signal conversion processing unit 12 converts a signal with the monitoring control target facility into a monitoring control signal that can be handled by the monitoring control system. For example, the signal conversion processing unit 12 converts a contact signal into a digital signal. The signal conversion processing unit 12 performs the reverse conversion. The communication processing unit 13 transmits and receives signals via the monitoring control network 90.

  FIG. 3 is a functional block diagram showing an internal configuration of the supervisory control master station 30, and only functional blocks related to the present embodiment are extracted and shown. The monitoring control master station 30 is a monitoring control device that includes a communication processing unit 31, a storage unit 32, a control setting registration unit 33, a calculation unit 34, and a control state display control unit 38.

The communication processing unit 31 transmits a signal via the monitoring control network 90.
The storage unit 32 stores various data such as the control mode, the generator output lower limit, the load management data, the relationship between the generator output and the fuel consumption per unit time.
The control mode indicates which mode is rated operation control or operation time control. The rated operation control is generally called self-generated load control. The rated operation control is control for turning on / off the safety / general load 62 so as to achieve an output of the rated capacity of the generator for the purpose of efficient operation of the generator. The operation time control is control for turning on / off the safety / general load 62 for the purpose of continuing the power supply from the generator for a target time.
The generator output lower limit indicates the lower limit value of the generated power for the generator to operate normally.
The load management data indicates the load capacity and priority of each load. In this embodiment, the load is divided into control target load groups, and the load capacity and priority are managed for each load group.

  The control setting registration unit 33 receives the control setting input by the user from the monitoring control terminal 40. The control setting includes one or more of a control mode, a target operation continuation possible time, a generator output lower limit, and load management data. The control setting registration unit 33 writes the received control setting in the storage unit 32.

The calculation unit 34 includes an operation time control calculation unit 35, a rated operation control calculation unit 36, and an operation continuation possible time calculation unit 37.
The operation time control calculation unit 35 is based on the relationship between the generated power of the generator stored in the storage unit 32 and the fuel consumption per unit time, and the remaining fuel amount notified from the monitoring control slave station 10. The target generated power for the generator to continuously generate power for the target time is calculated. The operation time control calculation unit 35 selects the security / general load 62 to be operated according to the priority order so that the total load capacity is within the calculated target generated power.
The rated operation control calculation unit 36 performs the same rated operation control as before. The rated operation control calculation unit 36 turns on / off the safety / general load 62 so that the output of the rated capacity of the generator is obtained.

  Based on the relationship between the power generated by the generator stored in the storage unit 32 and the fuel consumption per unit time, the operation continuation possible time calculation unit 37 continues the power generation of the current power generation value. The amount of fuel consumption per unit time required in this case is calculated. The measurement value of the current generated power of the generator is notified from the monitoring control slave station 10. The operation continuation possible time calculation unit 37 calculates the operation continuation possible time when the generator continues to generate power with the remaining fuel from the calculated fuel consumption per unit time and the remaining fuel amount. Further, the operation continuation possible time calculation unit 37 uses the value of the generated power specified by the user instead of the measured value of the current generated power of the generator, and uses the remaining fuel to calculate the generated power value specified by the generator. The operation continuation possible time when power generation is continued can be calculated in the same manner.

  The control state display control unit 38 transmits information on the current control state to the monitoring control terminal 40. The control state information includes the value of the generated power of the current generator, the remaining fuel amount, the generator operation continuation time, the load input level, and the load group on / off state. The load input level indicates to what extent the power is supplied to the load of the priority order. The load group on / off state indicates whether power is supplied to each load group (on) or whether the power is cut off (off).

  FIG. 4 is a functional block diagram showing the internal configuration of the monitoring control terminal 40, and only the functional blocks related to the present embodiment are extracted and shown. The monitoring control terminal 40 includes a communication processing unit 41, an input unit 42, a display unit 43, a control setting input screen processing unit 44, and a control status display screen processing unit 45.

  The communication processing unit 41 transmits a signal via the monitoring control network 90. The input unit 42 is a user interface such as buttons, a keyboard, and a mouse for the user to input. The display unit 43 is a display that displays a screen. The control setting input screen processing unit 44 causes the display unit 43 to display a control setting input screen for inputting control settings. The control setting input screen processing unit 44 transmits the control setting input to the control setting input screen by the user through the input unit 42 to the monitoring control master station 30. The control state display screen processing unit 45 causes the display unit 43 to display a control state display screen including information on the control state notified from the monitoring control master station 30.

  FIG. 5 is a diagram showing load management data. The load management data is information in which a load group is associated with a priority order and a rated load of the group. In the figure, the emergency load 61 is registered in the load management data as a load group having the highest priority. The emergency load 61, which has the highest priority, is an object that must be supplied with power, and thus is not subject to on / off control. In general, the security load and the general load have a lower priority than the emergency load 61, but the security load may have the same priority as the emergency load 61.

  FIG. 6 is a diagram showing the relationship between the output of the generator and the fuel consumption per unit time. In the figure, the relationship between the output of the generator and the fuel consumption per unit time is shown as a characteristic curve. The storage unit 32 stores the relationship between the output of the generator and the fuel consumption per unit time as a characteristic curve shown in the figure. The output of the generator and the fuel consumption per unit time are used as parameters. A characteristic curve calculation formula may be stored.

  FIG. 7 is a diagram showing a control setting input screen displayed by the monitoring control terminal 40. The control setting input screen shown in the figure includes rated operation control or operation time control selection buttons A11 and A12, a target operation continuation time setting field A13, and a generator output lower limit setting field A14. Further, the control setting input screen includes a plurality of sets of a load group setting field A15, a priority setting field A16, and a load capacity setting field A17. In addition, the control setting input screen includes a setting button A18 for instructing the monitoring control master station 30 to set the input control setting.

  FIG. 8 is a diagram illustrating a control state display screen displayed by the monitoring control terminal 40. The control status display screen shown in the figure includes a display of the value of the current generated power of the generator, the amount of remaining fuel, the generator operation continuation time, the load input level, and the load group on / off status.

Next, the operation of the monitoring control system will be described.
First, the control setting is registered in the monitoring control master station 30 by the monitoring control terminal 40.
When the user inputs a control setting execution instruction via the input unit 42 of the monitoring control terminal 40, the control setting input screen processing unit 44 transmits a control setting inquiry to the monitoring control master station 30. The control setting registration unit 33 of the monitoring control master station 30 reads the current control setting from the storage unit 32 and returns the read control setting. The control setting input screen processing unit 44 of the monitoring control terminal 40 causes the display unit 43 to display a control setting input screen in which the received control settings are set as buttons and setting fields by default. The user inputs one or more of the operation mode, the target operation continuation time, the generator output lower limit, the load group priority, and the load capacity on the control setting input screen via the input unit 42 of the monitoring control terminal 40, and the setting button Select A18. The control setting input screen processing unit 44 transmits the control setting changed by the user input to the monitoring control master station 30. The control setting registration unit 33 of the monitoring control master station 30 registers the control setting received from the monitoring control terminal 40 in the storage unit 32. The control settings can be changed at any time.

  When a commercial power failure occurs, the supervisory control system performs general power failure control in which the power generation facility 52 supplies power to the emergency load 61 by an emergency generator or the like. The power failure control may be performed by the on-site panel side sequence of the power receiving / transforming equipment 51, or may be performed by the supervisory control slave station 10, the supervisory control master station 30, or another control device. When the emergency generator is started in response to the command and the rated voltage is established, the normal system supplying power from the power receiving / transforming facility 51 is switched to the emergency system supplying power from the power generating facility 52, and the emergency load 61 Power is supplied to

  FIG. 9 is a flowchart showing the monitoring control process of the monitoring control system. The supervisory control system starts power supply from the power generation facility 52 to the emergency load 61 by the emergency system and starts the supervisory control process shown in the figure after the power failure process is completed. Exit.

  The computing unit 34 of the supervisory control master station 30 determines whether the control mode stored in the storage unit 32 is operation time control or rated operation control (step S105). When the calculation unit 34 determines that the operation time control is performed (step S105: operation time control), the operation time control calculation unit 35 executes an operation time control process shown in FIG. 10 described later (step S110). When the calculation unit 34 determines that the rated operation control is performed (step S105: rated operation control), the rated operation control calculation unit 36 executes a rated operation control process shown in FIG. 11 described later (step S115).

  After the process of step S105 or step S110, the operation continuation possible time calculation part 37 performs the operation continuation possible time calculation process shown in FIG. 12 mentioned later (step S120). The computing unit 34 determines whether or not the commercial power has been restored depending on whether or not a signal for notifying the restoration of the power receiving / transforming equipment 51 has been received from the supervisory control slave station 10 (step S125). If the calculation unit 34 determines that the commercial power has not been recovered (step S125: NO), the calculation unit 34 repeats the processing from step S105. If the calculation unit 34 determines that the commercial power has been restored (step S125: YES), the calculation unit 34 ends the process. The supervisory control system performs conventional power recovery processing, and switches the emergency system that supplies power from the power generation facility 52 to the normal system that supplies power from the power receiving / transforming facility 51.

FIG. 10 is a flowchart showing the operation time control process of the monitoring control system, and shows the details of the process of step S110 of FIG.
The operation time control calculation unit 35 of the monitoring control master station 30 determines whether or not the setting of the target operation continuation possible time is stored in the storage unit 32 (step S205). When it is determined that the target operation continuation time is set (step S205: YES), the operation time control calculation unit 35 instructs the monitoring control slave station 10 to measure the remaining fuel amount. The signal conversion processing unit 12 of the monitoring control slave station 10 converts the remaining fuel signal input from the power generation facility 52 to the signal input / output unit 11 into a remaining fuel signal for monitoring control, and performs monitoring control via the communication processing unit 13. Notify the master station 30. The communication processing unit 31 of the monitoring control master station 30 outputs the received remaining fuel signal to the operation time control calculation unit 35 (step S210).

  The operation time control calculation unit 35 divides the remaining fuel amount (L) indicated by the remaining fuel signal received from the monitoring control slave station 10 by the target operation continuation possible time (h) to obtain the target used fuel amount per unit time ( L / h) is calculated. The operation time control calculation unit 35 calculates an output (kW) corresponding to the target fuel consumption (L / h) as a target output from the characteristic curve stored in the storage unit 32 (step S215). The target output is a target operation continuation possible time and generated power targeted for the generator to generate power.

  The operation time control calculation unit 35 determines whether or not there is an output lower limit setting based on whether or not the lower limit output set value is registered in the storage unit 32 (step S220). The lower limit output set value is the larger of the generator output lower limit and the rated load of the emergency load 61. When only one of the generator output lower limit and the rated load of the emergency load 61 is registered in the storage unit 32, the registered one is set as the lower limit output set value. Therefore, the operation time control calculation unit 35 determines that there is an output lower limit setting when at least one of the generator output lower limit and the rated load of the emergency load 61 is stored in the storage unit 32 (step S220: YES). ). The rated load of the emergency load 61 is a total value of the load capacities of the load groups registered in the load management data with the highest priority indicating that it is an emergency load.

  The operation time control calculation unit 35 determines whether or not the target output calculated in step S215 is larger than the lower limit output set value (step S225). When it is determined that the target output is larger than the lower limit output set value (step S225: YES), the operation time control calculation unit 35 instructs the monitoring control slave station 10 to measure the generated power. The signal conversion processing unit 12 of the monitoring control slave station 10 converts the generated power signal input from the power generation facility 52 to the signal input / output unit 11 into a generated power signal for monitoring control, and performs monitoring control via the communication processing unit 13. Notify the master station 30. The communication processing unit 31 of the monitoring control master station 30 outputs the received generated power signal to the operation time control calculation unit 35 (step S230).

  The operation time control calculation unit 35 determines whether or not the generator output set in the generated power signal as the measurement value of the generated power is larger than the target output calculated in step S215 (step S235). When it is determined that the generator output is equal to or lower than the target output (step S235: NO), the operation time control calculation unit 35 turns on power to some of the security / general loads 62 based on the priority (step S240).

  For example, the operation time control calculation unit 35 refers to the load management data stored in the storage unit 32 so that the total rated load of the selected load group does not exceed the target output in order from the highest priority. Select a load group. The operation time control calculation unit 35 transmits a control signal instructing to start power supply to a load group that is not currently supplied with power among the selected load groups, to the monitoring control slave station 20. The signal conversion processing unit 12 of the supervisory control slave station 20 converts the control signal received from the supervisory control master station 30 and starts supplying power to the security / general load 62 included in the load group designated by the control signal. The on / off signal is output.

  Or the operation time control calculating part 35 refers to the load management data memorize | stored in the memory | storage part 32, and selects the load group with the highest priority among the load groups which are not supplying power now. The operation time control calculation unit 35 transmits a control signal instructing to start power supply to the selected load group to the monitoring control slave station 20.

  Alternatively, the operation time control calculation unit 35 subtracts the generator output from the target output to calculate the increased target output. The operation time control calculation unit 35 refers to the load management data stored in the storage unit 32, and selects the rated load of the selected load group in order from the highest priority among the load groups not currently supplying power. Select a load group so that the total does not exceed the increase target output. The operation time control calculation unit 35 transmits a control signal instructing to start power supply to the selected load group to the monitoring control slave station 20.

  On the other hand, when it is determined that the generator output is larger than the target output (step S235: YES), the operation time control calculation unit 35 shuts off the power to some of the security / general loads 62 based on the priority ( Step S245).

  For example, the operation time control calculation unit 35 refers to the load management data stored in the storage unit 32 so that the total rated load of the selected load group does not exceed the target output in order from the highest priority. Select a load group. The operation time control calculation unit 35 outputs a control signal instructing to cut off power supply to a load group that is not included in the selected load group among the load groups of the safety load and the general load that are currently supplying power. Transmit to the supervisory control slave station 20. The signal conversion processing unit 12 of the supervisory control slave station 20 converts the control signal received from the supervisory control master station 30 and cuts off the power supply to the security / general load 62 included in the load group designated by the control signal. The on / off signal is output.

  Alternatively, the operation time control calculation unit 35 refers to the load management data stored in the storage unit 32 and selects the load group having the lowest priority among the load groups currently supplying power. The operation time control calculation unit 35 transmits a control signal instructing to cut off power supply to the selected load group to the monitoring control slave station 20.

  Alternatively, the operation time control calculation unit 35 subtracts the target output from the generator output to calculate a reduction target output. The operation time control calculation unit 35 refers to the load management data stored in the storage unit 32, and selects the rated load of the selected load group in descending order of priority from among the load groups currently supplying power. Select load groups until the total is equal to or greater than the reduction target output. The operation time control calculation unit 35 transmits a control signal instructing to cut off power supply to the selected load group to the monitoring control slave station 20.

  In step S225, when the operation time control calculation unit 35 determines that the target output is equal to or lower than the lower limit output set value (step S225: NO), it outputs an error message (step S250). For example, the operation time control calculation unit 35 transmits an error message to the monitoring control terminal 40, and the monitoring control terminal 40 causes the display unit 43 to display the received error message.

  After the process of step S240, step S245, or step S250, the monitoring control system ends the operation time control process and executes the process of step S120 of FIG.

FIG. 11 is a flowchart showing the rated operation control process of the monitoring control system, and shows the details of the process of step S115 of FIG.
The rated operation control calculation unit 36 of the monitoring control master station 30 instructs the monitoring control slave station 10 to measure the generated power. The signal conversion processing unit 12 of the monitoring control slave station 10 converts the generated power signal input from the power generation facility 52 to the signal input / output unit 11 into a generated power signal for monitoring control, and performs monitoring control via the communication processing unit 13. Notify the master station 30. The communication processing unit 31 of the monitoring control master station 30 outputs the received remaining fuel signal to the rated operation control calculation unit 36 (step S305).

The rated operation control calculation unit 36 determines whether or not the generator output set as the measurement value of the generated power in the generated power signal is smaller than the output upper limit of the generator (step S310). The output upper limit is a value close to the rated output of the generator, and is a value set lower than the rated output in consideration of safety. When it is determined that the generator output is smaller than the output upper limit (step S310: YES), the rated operation control calculation unit 36 turns on the power to some of the safety / general loads 62 based on the priority (step S315). . On the other hand, when the rated operation control calculation unit 36 determines that the output of the generator is higher than the output upper limit (step S310: YES), it supplies power to some of the security / general loads 62 based on the priority. Shut off (step S320).
After the process of step S315 or step S320, the supervisory control system ends the rated operation control process and executes the process of step S120 of FIG.

FIG. 12 is a flowchart showing the operation continuation possible time calculation process of the monitoring control system, and shows the details of the process of step S120 of FIG.
The operation continuation possible time calculation unit 37 of the monitoring control master station 30 instructs the monitoring control slave station 10 to measure the remaining fuel amount. The signal conversion processing unit 12 of the monitoring control slave station 10 converts the remaining fuel signal input from the power generation facility 52 to the signal input / output unit 11 into a remaining fuel signal for monitoring control, and performs monitoring control via the communication processing unit 13. Notify the master station 30. The communication processing unit 31 of the monitoring control master station 30 outputs the received remaining fuel signal to the operation continuation possible time calculation unit 37 (step S405).

  Further, the operation continuation possible time calculation unit 37 of the monitoring control master station 30 instructs the monitoring control slave station 10 to measure the generated power. The signal conversion processing unit 12 of the monitoring control slave station 10 converts the generated power signal input from the power generation facility 52 to the signal input / output unit 11 into a generated power signal for monitoring control, and performs monitoring control via the communication processing unit 13. Notify the master station 30. The communication processing unit 31 of the monitoring control master station 30 outputs the received generated power signal to the operation continuation possible time calculation unit 37 (step S410).

The operation continuation possible time calculation unit 37 uses the characteristic curve stored in the storage unit 32 to consume fuel per unit time corresponding to the generator output (kW) set in the generated power signal as a measured value of the generated power. The amount (L / h) is calculated (step S415). The operation continuation time calculation unit 37 calculates the operation continuation time (h) by dividing the remaining fuel amount (L) indicated by the remaining fuel signal by the fuel consumption amount (L / h) calculated in step S415 ( Step S420).
The monitoring control system ends the operation continuation possible time calculation process and executes the process of step S125 of FIG.

  In the above processing, the monitoring control master station 30 instructs the monitoring control slave station 10 to measure the remaining fuel amount and the generated power. However, the monitoring control slave station 10 outputs the remaining fuel signal and power generation at regular intervals. A power signal may be transmitted. In this case, the supervisory control master station 30 performs the above processing using the newest remaining fuel signal and generated power signal.

When the user inputs a control state display instruction through the input unit 42 of the monitoring control terminal 40, the control state display screen processing unit 45 transmits a control state inquiry to the monitoring control master station 30. The control state display control unit 38 of the monitoring control master station 30 transmits information on the current control state to the monitoring control terminal 40. The control state information includes the latest information on the generated power of the generator and the remaining fuel amount, the generator operation continuation time calculated by the operation continuation time calculation unit 37 based on the information, and the current load input level. And load group on / off status. The control state display control unit 38 acquires the load group on / off state from the monitoring control slave station 20. For example, the control state display control unit 38 transmits a load application state inquiry to the supervisory control slave station 20. The supervisory control slave station 20 determines the on / off status of each load group based on the input status signals input from the emergency load 61 and the safety / general load 62, and sends it to the supervisory control master station 30 via the communication processing unit 13. Notice. The control state display screen processing unit 45 of the monitoring control terminal 40 receives the control state display screen including the control state information from the monitoring control master station 30 and displays the control state display screen on the display unit 43.
Note that the monitoring control system may display the control state display screen on the monitoring control terminal 40 after the process of step S120 in FIG.

According to the embodiment described above, the supervisory control system performs general self-load control when in the rated operation control mode. On the other hand, in the operation time control mode, the supervisory control system sets the target generator based on the characteristic curve representing the relationship between the generated power of the generator and the fuel consumption per unit time and the measured remaining fuel. Calculates the target output that allows continuous operation. The supervisory control system sequentially performs on / off control of the group of the safety load and the general load based on the priority order and the load capacity of the group so that the generator output becomes the target power. However, if the generator output is too low, the efficiency will be significantly reduced, and it will be difficult to restart due to accumulation of soot. The emergency load 61 must be supplied with power. Therefore, when the target power falls below the lower limit value of the generator output or the rated load of the emergency load 61, the supervisory control system displays an error message and performs the operation time control because the target operation continuation time is not appropriate. Absent.
Furthermore, according to the above-described embodiment, the supervisory control system calculates and displays how many hours operation is possible when the current generator output continues.

The monitoring control system calculates the generator operation continuation time when the current generator output is continued in the operation continuation time calculation process of FIG. 12, but the generator output specified by the user is calculated. You may calculate the operation continuation possible time of the generator at the time of continuing.
For example, the user inputs a generator output and an instruction to execute an operation continuation time calculation through the input unit 42 of the monitoring control terminal 40. The monitoring control terminal 40 transmits the input generator output and the instruction to execute the operation continuation time calculation to the monitoring control master station 30. The operation continuation possible time calculation part 37 of the monitoring control master station 30 performs the operation continuation possible time calculation process of FIG. However, the operation continuation possible time calculation unit 37 does not execute the process of step S410, and performs the calculation using the generator output received from the monitoring control terminal 40 in step S415 instead of the measured generator output. The operation continuation possible time calculation unit 37 outputs the calculated operation continuation possible time to the monitoring control terminal 40. The monitoring control terminal 40 causes the display unit 43 to display the received operation continuation possible time.
The operation continuation time calculated based on the generator output specified by the user in this way allows the user to determine the target operation continuation time, or to manually control the power supply to the safety load or general load. It can be used as a judgment material.

  In addition, when the user sets the target operation continuation time longer than the upper limit when performing the control setting, the operation time control calculation unit 35 of the monitoring control master station 30 performs the processing of steps S210 to S215 in FIG. The target output may be set as the lower limit output set value without executing. Thereby, it can be made to drive | operate in the state with the least electric power consumption of a generator so that driving | operation continuation possible time becomes the longest. The control state display control unit 38 of the supervisory control master station 30 has a control state including the operation continuation time when the generator is operated with the least amount of power consumption after the process of step S120 in FIG. Information is output to the monitoring control terminal 40. The control state display control unit 38 may further transmit a message indicating that the set target operation continuation possible time and the target operation continuation possible time are too long. The control state display screen processing unit 45 of the monitoring control terminal 40 causes the display unit 43 to display the control state information and message received from the monitoring control master station 30 on the control state display screen.

  According to the above-described embodiment, when the power supply of the emergency generator cannot be expected for a while at the time of supplying the generator after a commercial power outage due to a major earthquake or the like, the generator is limited even if the load for supplying power is limited. Operation that extends the operation continuation time can be selected. For example, in a hospital, the generator supply target at the time of a power failure is determined in advance. However, due to a disaster, commercial power recovery, emergency generator fuel supply, and patient transport by emergency transportation are not readily available, and the expected time to recovery can be operated under normal control of the emergency generator. It can be over time. In such a case, the supervisory control system according to the present embodiment turns on / off loads other than the emergency load in consideration of the balance between the expected time until the situation recovery (= the target operation continuation time) and the importance of the load. Can be automatically controlled. As a result of this control, it is possible to perform operations such as limiting the other loads while giving priority to the power supply for the injured patient's life, and extending the operation continuation time of the emergency generator.

According to at least one embodiment described above, by having the operation time control calculation unit, the remaining fuel can be used for the load according to the priority of the load so that the generator can continue operation until the target time. The power supply can be controlled.
In addition, according to at least one embodiment described above, by having the operation continuation time calculation unit, it is possible to calculate the generator operation continuation time when the generator is operated with a load lower than the rating. it can.

  The functions of the supervisory control slave station 10, the supervisory control slave station 20, the supervisory control master station 30, and the supervisory control terminal 40 in the above-described embodiment may be realized by a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program held for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Surveillance control slave station, 11 ... Signal input / output part, 12 ... Signal conversion process part, 13 ... Communication process part, 20 ... Surveillance control slave station, 30 ... Supervisory control master station, 31 ... Communication process part, 32 ... Memory 33 ... Control setting registration unit 34 ... Calculation unit 35 ... Operation time control calculation unit 36 ... Rated operation control calculation unit 37 ... Drivable operation time calculation unit 38 ... Control state display control unit 40 ... Monitoring Control terminal 41 ... Communication processing unit 42 ... Input unit 43 ... Display unit 44 ... Control setting input screen processing unit 45 ... Control state display screen processing unit 51 ... Substation equipment 52 ... Power generation equipment 61 ... Emergency load, 62 ... Security / general load, 90 ... Supervisory control network

Claims (7)

A storage unit that stores the load capacity and priority of a plurality of power loads, and the relationship between the power generated by the generator and the fuel consumption per unit time;
A receiver for receiving the remaining fuel amount of the generator;
The generator continuously generates power for a target time based on the relationship between the generated power of the generator stored in the storage unit and the fuel consumption per unit time and the remaining fuel amount received by the receiving unit. An operation time control calculation unit that calculates a target generated power for operation and selects the power load to be operated according to the priority order so that the total load capacity of the operating power load is within the target generated power When,
Equipped with a,
The said operation time control calculating part is a monitoring control apparatus which outputs an error, when the said target generated electric power is lower than a lower limit . The power load is classified into an emergency load and another load and stored in the storage unit,
The monitoring control apparatus according to claim 1, wherein the priority of emergency loads is set higher than the priority of other loads. The receiving unit further receives a power generation value of the generator,
Necessary when the generator continues to generate the generated power value received by the receiver based on the relationship between the generated power of the generator stored in the storage unit and the fuel consumption per unit time The fuel consumption per unit time is calculated, and from the calculated fuel consumption per unit time and the remaining fuel amount received by the reception unit, power generation of the generated power value received by the reception unit is generated. The monitoring control apparatus according to claim 1, further comprising a driving continuation time calculating unit that calculates a driving continuation time when the machine continues. A supervisory control method executed by the supervisory control device,
A receiving step for receiving the remaining fuel amount of the generator;
The generator continuously generates power for a target time based on the relationship between the generated power of the generator stored in the storage unit and the fuel consumption per unit time and the remaining fuel amount received in the receiving step. The target generated power is calculated, and the load capacity and priority of the plurality of power loads stored in the storage unit are referred to, and the total load capacity of the operating power loads is within the target generated power. An operation time control processing step for selecting the power load to be operated according to the priority order, and
I have a,
In the operation time control processing step, a monitoring control method for outputting an error when the target generated power is lower than a lower limit value . In the receiving step further receives the generated power value of the generator,
Necessary when the generator continues to generate the generated power value received in the receiving step based on the relationship between the generated power of the generator stored in the storage unit and the fuel consumption per unit time. The fuel consumption per unit time is calculated, and from the calculated fuel consumption per unit time and the remaining fuel amount received in the reception step, power generation of the generated power value received in the reception step is calculated. A further operation continuation time calculating step for calculating an operation continuation possible time when the generator continues ,
The monitoring control method according to claim 4 . On the computer,
A receiving step for receiving the remaining fuel amount of the generator;
The generator continuously generates power for a target time based on the relationship between the generated power of the generator stored in the storage unit and the fuel consumption per unit time and the remaining fuel amount received in the receiving step. The target generated power is calculated, and the load capacity and priority of the plurality of power loads stored in the storage unit are referred to, and the total load capacity of the operating power loads is within the target generated power. An operation time control processing step for selecting the power load to be operated according to the priority order, and
Was executed,
In the operation time control processing step, a program that outputs an error when the target generated power is lower than a lower limit value . In the receiving step, further receiving the generated power value of the generator,
In the computer,
Based on the relationship between the fuel consumption per power generation unit time of the generator to be stored in the storage unit, required when the generator electric power generation of the generator power value received in the receiving step is continued to calculate the fuel consumption per unit such time, from the remaining amount of fuel received in calculating fuel consumption and the receiving step per unit time obtained by the power generation of the generator power value received Te said receiving step smell The program according to claim 6, further executing an operation continuation time calculation step for calculating an operation continuation time when the generator is continued.

Images