JP2007330002A - Power monitoring measurement control system of micro-grid, its power monitoring measurement control method and power monitoring measurement control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a power monitoring measurement control system which can surely prevent a reverse power flow or reselling caused by the change of a demand, and to obtain a power monitoring measurement control method and a power monitoring measurement control program. <P>SOLUTION: The micro-grid 1 includes a power customer facility LM at a micro-grid power receiving point for receiving the supply of commercial system point power P1 from a general electric power supplier power network 2, other power customer facilities L1... LL, and one or more distributed power supplies K1... KK which feed power to these facilities. The micro-grid operates a maximum power fluctuation value by receiving power measurement values of a maximum value and a minimum value of the commercial system point power P1 at each instantaneous time band, receives the maximum power fluctuation value of the past same instantaneous time band and compares it with the operated maximum power fluctuation value, creates a power generation plan of the next day of each distributed power supply on the basis of the larger maximum power fluctuation value, and performs the operation control of a current day on the basis of the power generation plan. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power monitoring measurement control system in a microgrid, a power monitoring measurement control method thereof, and a power monitoring measurement control program thereof.

  The microgrid is designed to optimally control multiple small-scale power generation facilities and multiple demand facilities to smooth electricity demand, improve facility utilization rates, and improve energy utilization rates. Research is underway as a system that stably supplies low-cost products.

  Here, the power supply is first limited in terms of the power supply contract, which means that reverse power flow from the distributed power source to the commercial power system is prohibited unless contracted and permitted. In addition, resale of power purchased from the commercial power system may be prohibited due to restrictions in the business law.

Conventionally, a technique for preventing power from flowing back from a distributed power source to a commercial power system has been considered. A load device that controls the amount of active power consumption is provided (see, for example, Patent Document 1). In addition, reverse power flow detection means is provided for detecting the occurrence of reverse power flow in the power system of the power company. When reverse power flow occurs, the main power supply circuit of the main power generator and the sub power of the sub power generator Some supply circuits are configured by providing instantaneous circuit interruption means for instantaneously interrupting the supply circuit (see, for example, Patent Document 2). In addition, although the concept of preventing reverse power flow is not included, power is distributed to a plurality of power consumers including a power consumer with a distributed power source in a predetermined area, and power supply and demand between these consumers is performed at a low cost. In order to stabilize the power system, the energy storage facility for storing the energy input to or output from the distributed power source, the predetermined amount of power purchased by the power trading device and the distributed power source Distribute the total amount of generated power to the electricity consumers in the community according to each power demand. If there is a difference between the total power demand and the total supply, the difference is resolved. As described above, there is a power demand control device that controls the operation of the distributed power source via the distributed power source control device to adjust the power supply and demand (see, for example, Patent Document 3). In addition, the current power control system monitors the balance between supply and demand for 30 minutes of integrated power without considering fluctuations, makes a power generation plan for distributed power sources, and performs the same amount control for 30 minutes to control the operation on the day. What is called is also used.
Japanese Patent Laid-Open No. 05-056564 (summary of first page, FIG. 1) JP 2002-374628 A (1st page abstract, FIG. 1) Japanese Patent Laid-Open No. 2002-010500 (first page abstract, FIG. 1)

  However, the conventional technology merely measures the reverse power flow or the risk thereof and prevents the reverse power flow, or adjusts the power supply and demand using energy storage equipment and distributed power control. There were problems due to blocking and delay in performance following changes in supply and demand. In addition, the actual fluctuation in power demand has a large fluctuation in a short time due to the input of a switch of a rotary machine such as a pump or an elevator. Thus, it was not possible to cope with the prevention of reverse power flow due to actual power fluctuations occurring in a short time.

  It is an object of the present invention to provide a microgrid power monitoring measurement control system, a power monitoring measurement control method thereof, and a power monitoring measurement control program thereof that can accurately prevent a reverse power flow caused by a change in supply and demand.

  In order to solve the above-described problems, the present invention includes a power consumer facility of a microgrid receiving point that receives supply of commercial grid power from a general electric utility power grid, and one or more distributed power sources that supply power to the power grid. It is a power monitoring measurement control system in a microgrid, which calculates the maximum power fluctuation value by receiving the maximum and minimum power measurement values of commercial grid point power for each instantaneous time zone, and within the instantaneous time zone at the same time In response to the maximum power fluctuation value in the past, based on the maximum power fluctuation value that is larger than the calculated maximum power fluctuation value, the power generation plan for the next day of each distributed power source is performed. A microgrid power monitoring and measurement control system having a power generation plan formulation means for performing operation control on the day is assumed. Accordingly, it is possible to sense a large fluctuation that occurs in a short time due to a switch input of a rotary machine such as a pump or an elevator in an actual fluctuation in power demand, and to cope with prevention of reverse power flow due to an actual fluctuation in electric power. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. It is possible to accurately prevent reverse currents caused by changes in supply and demand.

  In addition, if the power generation plan for the next day and the operation control on the day for each distributed power source is a microgrid power monitoring measurement control system that is provided with the condition of preventing the reverse power flow of the distributed power generation power to the commercial grid point. It is possible to detect a large fluctuation that occurs in a short time due to a switch input of a rotary machine such as a pump or an elevator in an actual fluctuation in power demand, and to cope with prevention of reverse power flow due to an actual power fluctuation.

  In addition, for each instantaneous time period, below the maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the power consumer facility demand power predicted value of the microgrid power receiving point. If the power monitoring measurement control system of the microgrid that determines the power generation plan value for the next day of the distributed power supply in the instantaneous time zone is used, it is possible to accurately prevent the reverse power flow from the microgrid to the commercial grid point.

  Further, if the distributed power source is a microgrid power monitoring measurement control system in which the power supply cost is selected from the lowest power generation cost up to the maximum power generation plan value, the power cost can be appropriately reduced.

  In addition, if the microgrid power monitoring measurement control system in which the selection of stacking of the distributed power sources up to the power supply amount equal to or less than the maximum power generation plan value is performed by predicting any failure of the distributed power sources is performed. It is possible to suppress an increase in cost caused by the failure of the distributed power source.

  In addition, an abnormality detection threshold value is set for the measured value of commercial grid point power, and when this measured value exceeds the threshold value, a corrected power generation plan is immediately calculated and re-directed to the distributed power source. In the case of the control system, it is possible to execute the corrected power generation plan by setting the abnormality detection threshold value and to take an appropriate countermeasure.

  On the other hand, the present invention provides a power consumer facility of a microgrid power receiving point that receives supply of commercial grid power from a general electric utility power network, another power consumer facility, and one or more distributed types that supply power to these facilities. A power monitoring and measurement control system in a microgrid including a power supply, which receives the maximum and minimum measured values of commercial grid point power and commercial grid point power for each instantaneous time zone, Calculate the power fluctuation value, and based on the maximum power fluctuation value that is larger than the maximum power fluctuation value of the past in the same time instant time zone, perform the power generation plan for the next day of each distributed power source, A microgrid power monitoring measurement control system that performs operation control on the day based on this power generation plan. As a result, it is possible to detect large fluctuations that occur in a short time due to switch inputs of rotating machines such as pumps and elevators in actual demand power fluctuations, and to accurately prevent reverse power flow and resale prevention due to actual power fluctuations. It becomes possible. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. By controlling the operation, reverse flow and resale caused by changes in supply and demand can be accurately prevented.

  In addition, the power generation plan on the next day of each of the distributed power sources and the operation control on the same day prevent reverse power flow of the distributed power generation power to the commercial grid point, and the other power demand from the commercial interconnection point in the microgrid. With a microgrid power monitoring measurement control system that requires the prevention of resale of commercial power to facilities, large fluctuations that occur in a short time due to switch inputs of rotating machines such as pumps and elevators in actual demand power fluctuations. It can detect and respond to prevention of reverse power flow and resale due to actual power fluctuations.

  Further, for each instantaneous time zone, a maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the predicted power demand value of all the customer facilities, and a micro grid power receiving point The instantaneous time between the predicted value of power demand for all power facilities other than the customer facilities and the minimum power generation plan value obtained by adding the larger maximum power fluctuation value of the commercial interconnection tidal power compared to the power generation point. If it is a microgrid power monitoring measurement control system that determines the power generation plan value for the next day of the distributed power source in the belt, it will accurately prevent the reverse power flow from the microgrid to the commercial grid point and the resale of commercial power Can do.

  In addition, even when the maximum power generation plan value and the minimum power generation plan value are reversed in value, the power of the microgrid that determines the power generation plan value of the next day of the distributed power source in the instantaneous time period between them. With the monitoring measurement control system, even if the maximum power generation plan value and the minimum power generation plan value are reversed, the reverse power flow from the microgrid to the commercial grid point can be prevented and It is possible to effectively prevent the resale of electric power.

  In addition, the power generation plan value for the next day of the distributed power source in the instantaneous time period in the meantime is calculated based on the maximum power fluctuation value of the commercial grid point power and the maximum power fluctuation value of the commercial interconnection point power flow. Total power demand other than house equipment is estimated to be the estimated power demand value of the customer equipment at the microgrid power receiving point [maximum power fluctuation value of commercial interconnection point ÷ (maximum power fluctuation value of commercial interconnection point + In the case of a microgrid power monitoring measurement control system determined by adding a value obtained by multiplying the value obtained by multiplying the commercial grid point maximum power fluctuation value)], the maximum power generation plan value and the minimum power generation plan value are reversed. Even when the value becomes the value, it is possible to more accurately prevent the reverse power flow from the microgrid to the commercial grid point and the commercial power resale.

  The distributed power source includes operation control means for selecting commercial power as a value obtained by subtracting the generated power from the estimated power demand value of all power consumer equipment by selecting and stacking the distributed power sources in ascending order of power generation cost. The distributed power source having a power generation cost lower than the power cost is set to the predicted power demand value of all power consumer facilities other than the microgrid power receiving point customer facility. The maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the total power consumer facility demand power prediction value does not exceed the minimum power generation plan value added with the value. The power generation cost is selected in ascending order of power generation cost, and the value obtained by subtracting the power generation power accumulated from the estimated power demand for all power customer facilities is used as commercial power, and the value is calculated as the minimum power generation plan value. If it is not possible to build up only with a distributed power source with a power generation cost lower than that of electric power, we will further select a distributed power source higher than commercial power in order from the lowest power generation cost until the minimum power generation plan value is reached. When the value obtained by subtracting the generated power accumulated from the predicted power demand value is used as commercial power, and it is stacked only with a distributed power source with a power generation cost lower than the commercial power above the maximum power generation plan value, until the maximum power generation plan value is reached. By selecting a stack and making it a microgrid power monitoring measurement control system that uses the value obtained by subtracting the generated power accumulated from the predicted power demand for all power customer facilities as the commercial power, the power cost can be reduced, and the economy Is.

  In addition, when the maximum power generation plan value and the minimum power generation plan value are reversed, the power generation capacity is subtracted from the power generation capacity of the distributed power source with constant power reception control. If it is a power monitoring measurement control system of a microgrid that accumulates distributed power sources in the order of cheaper power generation cost to the value and subtracts the power generation plan value from the total power consumer facility demand power predicted value as commercial power, Even when the maximum power generation plan value and the minimum power generation plan value are reversed, the power cost can be reduced, which is economical.

  In addition, the power monitoring and measurement control of the microgrid, in which the selection of stacking of the distributed power sources up to the amount of power supply that does not exceed the demand of the total power customer facility power is performed by predicting any failure of the distributed power sources If it is a system, even if a failure occurs in any of the distributed power sources, it is possible to pursue economic efficiency and prevent resale.

  In addition, an abnormality detection threshold value is set for both the measured value of commercial grid point power and the measured value of commercial grid point power, and when any of these measured values exceeds the threshold value, the measurement is performed from the threshold value. Immediately calculate the corrected power generation plan using the value obtained by adding the maximum maximum power fluctuation value in the same time instant time zone as the new maximum maximum power fluctuation value in the same time instant time zone. If the microgrid power monitoring measurement control system that re-directs to the distributed power source is set, it is possible to execute the corrected power generation plan by setting the abnormality detection threshold, and to take an appropriate countermeasure.

  On the other hand, the present invention provides power in a microgrid including a power consumer facility at a microgrid power receiving point that receives supply of commercial grid power from a general electric utility power grid, and one or more distributed power sources that supply power thereto. A monitoring measurement control method, the step of calculating the maximum power fluctuation value by receiving the maximum and minimum power measurement values of the commercial grid point power for each instantaneous time zone, and the past in the instantaneous time zone at the same time Receiving a maximum power fluctuation value and selecting a larger maximum power fluctuation value compared to the calculated maximum power fluctuation value; and A power monitoring measurement control method for a microgrid including a step of performing a power generation plan on the next day of a distributed power source and a step of performing operation control on the day based on the power generation plan. By this method, it is possible to sense a large fluctuation that occurs in a short time due to a switch input of a rotary machine such as a pump or an elevator in an actual demand power fluctuation, and to cope with prevention of reverse power flow due to the actual power fluctuation. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. In this way, reverse power flow caused by changes in supply and demand can be prevented accurately.

  In addition, the step of performing the power generation plan for the next day for each of the distributed power sources and the step of performing the operation control for the current day include the power of the microgrid on the condition that the reverse power flow prevention of the distributed power generation power to the commercial grid point is a condition With the monitoring measurement control method, it is possible to sense a large fluctuation that occurs in a short time due to a switch input of a rotating machine such as a pump or an elevator in actual demand power fluctuation, and to cope with prevention of reverse power flow due to actual power fluctuation.

  Further, the step of carrying out the power generation plan for the next day of each of the distributed power sources is the larger maximum power fluctuation value of the commercial grid point power compared to the power consumer facility demand power predicted value for each instantaneous time period. If the microgrid power monitoring measurement control method that determines the power generation plan value for the next day of the distributed power source in the instantaneous time zone below the maximum power generation plan value obtained by subtracting, the reverse power flow from the microgrid to the commercial grid point Prevention can be achieved accurately.

  In addition, if the power generation measurement and control method of the microgrid includes a step of selecting the distributed power source from the lowest power generation cost to the power supply amount below the maximum power generation plan value, the power cost can be appropriately reduced. Can do.

  Further, the method of selecting and stacking the distributed power sources up to the power supply amount equal to or less than the maximum power generation plan value is a microgrid power monitoring measurement control method performed by predicting any failure of the distributed power sources. For example, it is possible to suppress an increase in cost caused by a failure of the distributed power source.

  In addition, when a threshold value for abnormality detection is set in the measured value of the commercial grid point power, and the measured value exceeds the threshold value, a corrected power generation plan is immediately calculated and the microgrid including the step of re-commanding the distributed power source is included. With the power monitoring measurement control method, the corrected power generation plan can be executed by setting a threshold value for abnormality detection, and an appropriate countermeasure can be taken.

  On the other hand, the present invention provides a power consumer facility of a microgrid power receiving point that receives supply of commercial grid power from a general electric utility power network, another power consumer facility, and one or more distributed types that supply power to these facilities. A power monitoring and measurement control method in a microgrid including a power supply, which receives the maximum and minimum measured values of the commercial grid point power and commercial grid point power for each instantaneous time zone, The step of calculating the power fluctuation value, the step of selecting the larger maximum power fluctuation value compared with the maximum power fluctuation value of the past maximum in the same time instant time zone, respectively, and the larger of each comparison A microgrid power monitor including a step of performing a power generation plan for the next day of each of the distributed power sources based on a maximum power fluctuation value, and a step of performing operation control for the day based on the power generation plan And the control method. As a result, it is possible to detect large fluctuations that occur in a short time due to switch inputs of rotating machines such as pumps and elevators in actual demand power fluctuations, and to accurately prevent reverse power flow and resale prevention due to actual power fluctuations. It becomes possible. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. By controlling the operation, reverse flow and resale caused by changes in supply and demand can be accurately prevented.

  In addition, the step of performing the power generation plan for the next day of each of the distributed power sources and the step of performing the operation control on the day include prevention of reverse power flow of the distributed power generation power to the commercial grid point, and commercial interconnection points in the microgrid. If the microgrid power monitoring measurement control method is based on prevention of resale of commercial power to other power demand facilities from the above, it is possible to reduce the shortage caused by switch input of a rotary machine such as a pump or elevator in actual demand power fluctuations. It can detect large fluctuations that occur in time and can respond to prevention of reverse power flow and resale due to actual power fluctuations.

  Further, the step of carrying out the power generation plan for the next day of each of the distributed power sources is the largest maximum power fluctuation of the commercial grid point power compared to the predicted power demand value of all the customer facilities for each instantaneous time period. The maximum power fluctuation value of the larger of the commercial interconnection point tidal power compared to the maximum power generation plan value minus the value and the predicted power demand value of all power customers other than the customer equipment at the microgrid receiving point If the microgrid power monitoring measurement control method for determining the power generation plan value for the next day of the distributed power source in the instantaneous time zone between the minimum power generation plan value plus the It is possible to accurately prevent the reverse power flow and the resale of commercial power.

  Further, in the step of performing the power generation plan on the next day for each of the distributed power sources, even when the maximum power generation plan value and the minimum power generation plan value have reversed values, the instantaneous time zone If the microgrid power monitoring and measurement control method for determining the power generation plan value for the next day of the distributed power source is used, the maximum power generation plan value and the minimum power generation plan value may be reversed. Therefore, it is possible to effectively prevent the reverse power flow from the microgrid to the commercial grid point and the resale of commercial power.

  Further, the step of performing a power generation plan for the next day of each of the distributed power sources includes a power generation plan value for the next day of the distributed power source in the instantaneous time period between the maximum power fluctuation value of the commercial grid point power and a commercial interconnection point. From the maximum power fluctuation value of the tidal power, the predicted power demand value for all power customer equipment other than the customer equipment at the microgrid power receiving point, If the microgrid power monitoring measurement control method is set to a value obtained by multiplying the value obtained by multiplying power fluctuation value ÷ (commercial interconnection point maximum power fluctuation value + commercial grid point maximum power fluctuation value) ”, the maximum power generation plan Even when the value and the minimum power generation plan value are reversed values, it is possible to more accurately prevent the reverse power flow from the microgrid to the commercial grid point and the commercial power resale. .

  In addition, it includes a step of selecting the stacked power sources in order of increasing power generation cost and making the commercial power a value obtained by subtracting the generated power accumulated from the predicted value of the total power consumer equipment demand power. In addition, the distributed power source having a power generation cost lower than the commercial power cost is set to the predicted value of the total power consumer facility demand power other than the microgrid power receiving point customer facility. The maximum power generation plan value obtained by subtracting the comparatively larger maximum power fluctuation value of the commercial grid point power from the total power consumer facility demand power prediction value exceeding the minimum power generation plan value including the power fluctuation value. The power generation cost that does not exceed the power generation cost is selected in ascending order, and the value obtained by subtracting the generated power generation from the predicted value of the total power consumer equipment demand power is used as the commercial power. If the planned value cannot be stacked with only the distributed power source with the power generation cost cheaper than the commercial power, the distributed power source higher than the commercial power is selected in order of the lowest power generation cost until the minimum power generation planned value is just reached. When the value obtained by subtracting the accumulated power generated from the predicted power demand for power customer facilities is commercial power, the maximum power generation plan value is calculated when the power generation cost is higher than the maximum power generation plan value and only with distributed power sources with a power generation cost lower than that of the commercial power. If it is a microgrid power monitoring measurement control method in which the value obtained by subtracting the generated power accumulated from the predicted value of the total power consumer equipment demand power is used as commercial power, the power cost is reduced. Can be economical.

  In addition, when the maximum power generation plan value and the minimum power generation plan value are reversed, the power generation capacity is subtracted from the power generation capacity of the distributed power source with constant power reception control. A power monitoring measurement control method for a microgrid including a step of stacking distributed power sources in order of low power generation cost up to a predetermined value, and subtracting the power generation plan value from the total power consumer facility demand power prediction value to obtain commercial power; In this case, even when the maximum power generation plan value and the minimum power generation plan value are reversed, the power cost can be reduced, which is economical.

  In addition, the power of the microgrid in which the step of selecting and stacking the distributed power sources up to the amount of power supply that does not exceed the demand of the total power customer facility power is performed by predicting any failure of the distributed power sources If the monitoring measurement control method is used, even if a failure occurs in any of the distributed power sources, it is possible to pursue economic efficiency and prevent resale.

  In addition, an abnormality detection threshold is set for both the measured value of the commercial grid point power and the measured value of the commercial grid point power, and when any of these measured values exceeds the threshold, the measurement is performed from the threshold. Immediately calculate the corrected power generation plan using the value obtained by adding the maximum maximum power fluctuation value in the same time instant time zone as the new maximum maximum power fluctuation value in the same time instant time zone. If the microgrid power monitoring measurement control method includes the step of re-directing to the distributed power source, the correction power generation plan can be executed by setting the abnormality detection threshold value, and an appropriate countermeasure can be taken. .

  On the other hand, the present invention provides power in a microgrid including a power consumer facility at a microgrid power receiving point that receives supply of commercial grid power from a general electric utility power grid, and one or more distributed power sources that supply power thereto. A microgrid power monitoring and measurement control program for causing a computer to execute monitoring and measurement control. When the computer receives the maximum and minimum power measurement values of commercial system point power for each instantaneous time zone, the maximum power fluctuation A procedure for calculating a value, a procedure for receiving a maximum power fluctuation value in the past in the same time instant time zone, and selecting a larger maximum power fluctuation value compared with the calculated maximum power fluctuation value; A procedure for performing a power generation plan for the next day for each of the distributed power sources based on the larger maximum power fluctuation value in comparison, and a procedure for performing operation control for the day based on the power generation plan; And a for executing, the microgrid power monitoring measurement control program. By this program, it is possible to detect a large fluctuation that occurs in a short time due to a switch input of a rotary machine such as a pump or an elevator in an actual fluctuation in demand power, and to cope with prevention of reverse power flow due to actual fluctuation in power. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. In this way, reverse power flow caused by changes in supply and demand can be prevented accurately.

  In addition, the procedure for performing the power generation plan for each distributed power source on the next day and the procedure for performing the operation control for the current day include the power of the microgrid on the condition that the reverse power flow prevention of the distributed power generation power to the commercial system point is a condition If the monitoring measurement control program is used, it is possible to sense a large fluctuation that occurs in a short time due to a switch input of a rotating machine such as a pump or an elevator in an actual demand power fluctuation, and to cope with prevention of reverse power flow due to the actual power fluctuation.

  Further, the procedure for performing the power generation plan for the next day of each of the distributed power sources is the largest maximum power fluctuation of the commercial grid point power compared to the predicted value of the power consumer facility demand power for each instantaneous time period. If the microgrid power monitoring measurement control program determines the power generation plan value for the next day of the distributed power source in the instantaneous time zone below the maximum power generation plan value minus the value, the reverse power flow from the microgrid to the commercial grid point Can be accurately prevented.

  Further, if the procedure for selecting the distributed power source from the order of cheaper power generation cost to the power supply amount below the maximum power generation plan value is a microgrid power monitoring measurement control program for causing a computer to execute, Electric power costs can be reduced appropriately.

  In addition, a microgrid power monitoring measurement control program in which the procedure for selecting and stacking the distributed power sources up to a power supply amount equal to or less than the maximum power generation plan value is performed by predicting any failure of the distributed power sources, In this case, it is possible to suppress an increase in cost caused by a failure of the distributed power source.

  Further, when a threshold value for abnormality detection is set to the measured value of the tidal current power at the commercial system point, and the measured value exceeds the threshold value, a procedure for immediately calculating a corrected power generation plan and re-instructing the distributed power source is performed by the computer. If the microgrid power monitoring and measurement control program is to be executed at the same time, it is possible to execute the corrected power generation plan by setting the abnormality detection threshold value and to take an appropriate countermeasure.

  On the other hand, the present invention provides a power consumer facility of a microgrid power receiving point that receives supply of commercial grid power from a general electric utility power network, another power consumer facility, and one or more distributed types that supply power to these facilities. A power monitoring and measurement control program for a microgrid for causing a computer to execute power monitoring and measurement control in a microgrid including a power supply. The procedure for calculating each maximum power fluctuation value by receiving the measurement value of each maximum value and minimum value, and the maximum maximum power fluctuation value compared to the maximum power fluctuation value in the past at the same time instant time zone. A procedure for selecting a power fluctuation value, a procedure for performing a power generation plan for the next day of each of the distributed power sources based on the larger maximum power fluctuation value compared to each other, and this power generator For executing a procedure for operation control of the day based on, and microgrids power monitoring measurement control program. As a result, it is possible to detect large fluctuations that occur in a short time due to switch inputs of rotating machines such as pumps and elevators in actual demand power fluctuations, and to accurately prevent reverse power flow and resale prevention due to actual power fluctuations. It becomes possible. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. By controlling the operation, reverse flow and resale caused by changes in supply and demand can be accurately prevented.

  Further, the procedure for performing the power generation plan for the next day of each of the distributed power sources and the procedure for performing the operation control on the same day include the prevention of reverse power flow of the distributed power generation power to the commercial grid point and the commercial interconnection within the microgrid. If it is a microgrid power monitoring and measurement control program that prevents commercial power from being resold to other power demand facilities from the point, it depends on switch inputs of rotating machines such as pumps and elevators in actual demand power fluctuations It can detect large fluctuations that occur in a short time, and can respond to prevention of reverse power flow and resale prevention due to actual power fluctuations.

  Further, the procedure for performing the power generation plan for the next day of each of the distributed power sources is the largest maximum power fluctuation of the commercial grid point power from the predicted power demand value for all the customer facilities for each instantaneous time period. The maximum power fluctuation value of the larger of the commercial interconnection point tidal power compared to the maximum power generation plan value minus the value and the predicted power demand value of all power customers other than the customer equipment at the microgrid receiving point If the power monitoring measurement control program for the microgrid that determines the power generation plan value for the next day of the distributed power source in the instantaneous time zone between It is possible to accurately prevent the reverse power flow and the resale of commercial power.

  Further, in the procedure for performing the power generation plan for the next day of each distributed power source, even when the maximum power generation plan value and the minimum power generation plan value are reversed, the instantaneous time zone If the power monitoring measurement control program for the microgrid that determines the power generation plan value for the next day of the distributed power source is used, the maximum power generation plan value and the minimum power generation plan value may be reversed. Therefore, it is possible to effectively prevent the reverse power flow from the microgrid to the commercial grid point and the resale of commercial power.

  Further, the procedure for carrying out the power generation plan for the next day of each of the distributed power sources includes the power generation plan value for the next day of the distributed power source in the instantaneous time period between the maximum power fluctuation value of the commercial grid point power and the commercial interconnection point. From the maximum power fluctuation value of the tidal power, the predicted power demand value for all power customer equipment other than the customer equipment at the microgrid power receiving point, If the microgrid power monitoring measurement control program is set to a value obtained by multiplying the value obtained by multiplying power fluctuation value ÷ (commercial interconnection point maximum power fluctuation value + commercial grid point maximum power fluctuation value) ”, the maximum power generation plan Even when the value and the minimum power generation plan value are reversed values, it is possible to more accurately prevent the reverse power flow from the microgrid to the commercial grid point and the commercial power resale. .

  In addition, a part for selecting the stacked power sources in order from the lowest power generation cost and causing the computer to execute a procedure in which a value obtained by subtracting the generated power accumulated from the predicted value of the total power consumer equipment demand power is used as commercial power is provided. This step usually includes the distributed power source having a power generation cost lower than the commercial power cost to the predicted power demand value of all power customer facilities other than the microgrid power point customer facility. The comparatively larger maximum power fluctuation value of the commercial grid point power from the total power consumer facility demand power predicted value exceeding the minimum power generation plan value obtained by adding the larger maximum power fluctuation value. The power generation cost that does not exceed the maximum power generation plan value minus the power generation cost is selected in ascending order of power generation cost, and the generated power is subtracted from the predicted power demand value for all power customers' facilities. If the value is commercial power, and the minimum power generation plan value cannot be stacked with only distributed power sources with a power generation cost lower than that of commercial power, the minimum power generation plan value is set in the order of lower power generation costs. The distribution power is selected until the total power consumer equipment demand power predicted value is subtracted from the accumulated power generation power, and the power generation cost is lower than the maximum power generation plan value and lower than the power generation cost. In the case of power accumulation, the power grid is selected until the maximum power generation plan value is just reached, and the power monitoring and measurement control of the microgrid using commercial power as the value obtained by subtracting the power generation power accumulated from the predicted power demand for all power consumers If it is a program, the power cost can be reduced and it is economical.

  In addition, when the maximum power generation plan value and the minimum power generation plan value are reversed, the power generation capacity is subtracted from the power generation capacity of the distributed power source with constant power reception control. Including a portion for causing a computer to execute a procedure in which distributed power sources are stacked in ascending order of power generation cost up to a predetermined value, and a value obtained by subtracting the power generation plan value from the total power consumer facility demand power predicted value is used as commercial power If the grid power monitoring measurement control program is used, it is economical because the power generation cost can be reduced even when the maximum power generation plan value and the minimum power generation plan value are reversed. .

  In addition, the power of the microgrid, in which the procedure of selecting and stacking the distributed power sources up to the power supply amount that does not exceed the demand of the total power customer facility power is performed by predicting any failure of the distributed power sources If the monitoring measurement control program is used, it is possible to pursue economic efficiency and prevent resale even when a failure occurs in any of the distributed power sources.

  In addition, an abnormality detection threshold is set for both the measured value of the commercial grid point power and the measured value of the commercial grid point power, and when any of these measured values exceeds the threshold, the measurement is performed from the threshold. Immediately calculate the corrected power generation plan using the value obtained by adding the maximum maximum power fluctuation value in the same time instant time zone as the new maximum maximum power fluctuation value in the same time instant time zone. If the microgrid power monitoring and measurement control program includes a part for causing the computer to execute the procedure for re-directing to the distributed power source, the modified power generation plan can be executed by setting the abnormality detection threshold value. Corrective action can be taken.

  According to the present invention, the maximum power fluctuation value is calculated by receiving the maximum and minimum power measurement values of the commercial grid point power for each instantaneous time zone, and the maximum maximum power fluctuation in the same time instant time zone is calculated. A power generation plan for the next day of each distributed power source based on the larger maximum power fluctuation value compared to the calculated maximum power fluctuation value, and the operation control of the day based on this power generation plan By adopting a microgrid power monitoring measurement control system having a plan formulation means, it is possible to sense a large fluctuation occurring in a short time in actual demand power fluctuation and to prevent reverse power flow due to actual power fluctuation. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. It is possible to accurately prevent reverse currents caused by changes in supply and demand.

  Further, according to the present invention, the step of calculating the maximum power fluctuation value by receiving the maximum and minimum power measurement values of the commercial grid point power for each instantaneous time zone, and the past in the instantaneous time zone at the same time In response to the maximum power fluctuation value, the step of selecting a larger maximum power fluctuation value compared to the calculated maximum power fluctuation value, and each variance based on the larger maximum power fluctuation value A method for monitoring and controlling the power of the microgrid including a step of performing a power generation plan for the next day of the type power supply and a step of performing operational control on the day based on the power generation plan, so that a short time in actual demand power fluctuation can be obtained. It is possible to detect large fluctuations that occur in the system and to prevent reverse power flow due to actual power fluctuations. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. It is possible to accurately prevent reverse currents caused by changes in supply and demand.

  Further, according to the present invention, the computer receives the maximum value and the minimum power measurement value of the commercial grid point power for each instantaneous time zone, and calculates the maximum power fluctuation value. In response to the largest maximum power fluctuation value in comparison with the calculated maximum power fluctuation value and the larger maximum power fluctuation value compared with the calculated maximum power fluctuation value, By using the microgrid power monitoring and measurement control program to execute the procedure for performing the power generation plan for each distributed power source the next day and the procedure for performing the operation control for the day based on this power generation plan, It can detect large fluctuations in power fluctuations in a short period of time and cope with prevention of reverse power flow due to actual power fluctuations. By making use of the fact that shortening the time period interval tends to be closer to actual power fluctuations, the power generation plan value for the next day is determined in advance according to the maximum fluctuation value of power demand for each instantaneous time period. It is possible to accurately prevent reverse currents caused by changes in supply and demand.

  Embodiments of the present invention will be described below with reference to the drawings.

  The following embodiments of the present invention relate to a microgrid including other power consumer equipment in addition to the power consumer equipment at the microgrid power receiving point, but other than the power consumer equipment at the microgrid power receiving point. The following description can be similarly applied to the microgrid in the case where there is no other electric power consumer equipment by assuming that there is no other electric power consumer equipment.

  FIG. 1 is a configuration diagram of a microgrid including a microgrid power monitoring measurement control system according to an embodiment of the present invention. As shown in FIG. 1, the microgrid 1 includes a power consumer facility LM at a microgrid power receiving point that receives supply of commercial grid point power from a general electric utility power network (power company) 2, and another power consumer facility L <b> 1. To LL, and one or more distributed power sources K1 to KK for supplying power to them, which are exemplified by K units such as wind power generators, solar power generators, fuel cells, gas engines, etc. It includes a power monitoring measurement control system 5 that monitors and controls the power of the home equipment L1 to LL and the distributed power sources K1 to KK. As shown in FIG. 1, the general electric utility power network (electric power company) 2, the power customer equipment LM, the distributed power sources K1 to KK, and the customer equipment L1 to LL are connected by a power cable KB. The power monitoring measurement control system 5 controls the power consumer equipment LM, the distributed power sources K1 to KK, and the power consumer equipment L1 to LL in the microgrid 1 by the measurement / control line 5C.

  Here, the power at the commercial system point O1 at the entrance of the microgrid 1 is defined as the commercial system point power P1, and the reverse power flow at the commercial system point O1 is defined as the reverse power flow RP1 (indicated by a dotted line arrow). Also, the power at the commercial interconnection point O2 in the microgrid 1 is the commercial interconnection point power P2, and the reverse power RP2 of this commercial interconnection power P2 is the reverse power RP2 (the resale power It is also referred to as a hatched arrow in FIG. Further, the power from the distributed power sources K1,..., KK is indicated as PK1,..., PKK, and the power to the other power consumer facilities L1,. . These pieces of power information are transmitted to the power monitoring measurement control system 5 as information from the power equipment 8 in FIG. 2B. Further, the sum of PL1,..., PLL is P3.

(Basic definition in the present invention)
Here, in further developing the description, the commercial system point power, the commercial interconnection point power, and the instantaneous time zone (in this embodiment, for each one minute), which are the basic definition items in the present invention. The definition contents for each maximum power fluctuation value are as follows.

Commercial system point power = total power customer facility power-total generated power of distributed power source: Formula (x)
Commercial interconnection point tidal power = Total power generated by distributed power source-Total power customer facility power other than microgrid power receiving point customer facility ... Formula (y)
Each maximum power fluctuation value for each instantaneous time zone (in this embodiment, for each one minute) is
Maximum power fluctuation value of commercial grid point power = Maximum value for each instantaneous time zone in equation (x)-Minimum value Maximum power fluctuation value of commercial interconnection point power flow = Maximum value for each instantaneous time zone of equation (y)- minimum value

  Furthermore, the instantaneous time zone described above is a time zone of 1 minute in this embodiment, which will be described later, but 30 seconds to 5 minutes is desirable in consideration of the response time of the computer in order to keep the tracking accuracy without any problem. . This is because commercial grid point power and commercial interconnection point power are the power obtained by subtracting the total power generated by the distributed power source from the total power customer facility power, and other than the microgrid power point customer facility from the total distributed power generated power If the power generation adjustment with respect to the load fluctuation of the distributed power source with constant power reception control is slow, the time fluctuation of the commercial grid point power and commercial interconnection point power will also increase. The maximum power fluctuation value in the instantaneous time zone also becomes large.

Depending on the type of demand load equipment in the microgrid, the demand load fluctuation has various characteristics such as the magnitude of power fluctuation, fluctuation cycle, etc., and is a composite characteristic of the equipment, whether the power fluctuation cycle is in seconds or in minutes It is also uncertain whether the power fluctuations are periodic or not.
Here, if the instantaneous time period is set in seconds, the maximum power fluctuation value can be obtained by the maximum and minimum values that are close to the actual demand load fluctuation period. In response to the power generation command, power generation cannot be adjusted in seconds, which is not a realistic setting. If the instantaneous time zone is set to a sufficient unit, it is a synthesis of load characteristics with various fluctuation cycles, but there are many actual load fluctuations within the period, and power generation targets that emphasize backflow and resale prevention that anticipate large load fluctuations Although it is a command, since a frequent power generation target command that considers the economics of distributed power sources cannot be made, it is not a realistic setting. The embodiment is described with an instantaneous time zone set to 1 minute in consideration of a distributed power source with slow followability and economy.

  Next, FIG. 2A shows a configuration of the power monitoring measurement control system 5. Here, the power monitoring measurement control system 5 includes a micro grid receiving point power consumer facility LM, a plurality of other power consumer facilities L1,..., LL, a plurality of measurement terminals 51a, and a commercial interconnection point O2. , A plurality of measurement / control terminals 51b connected to the distributed power supply K1... KK, and a central processing unit CPU connected to the plurality of measurement terminals 51a and the plurality of measurement / control terminals 51b via communication means IT. Consists of The central processing unit CPU includes a storage device U-1 including various databases or programs, an arithmetic processing unit U-2 operated by the program, a display unit U-3, and a communication unit U-4 corresponding to the communication means IT.

  FIG. 2B is a basic control block diagram of the next day power generation plan of the power monitoring measurement control system 5 of the microgrid in FIG.

  Each measurement terminal 51 (51a, 51b) measures the power measurement data 51D from the power facility 8, such as each power consumer facility, commercial grid point, commercial grid point, distributed power source, and the like. The demand power measurement data 52D is transmitted to the demand power database 61. Further, the maximum power fluctuation value of the commercial grid point power P1 and the commercial interconnection point power flow P2 is calculated for each instantaneous time zone, and the instantaneous time zone maximum power fluctuation value 53D is transmitted to the database 62.

  The demand power database 61 is a database of each power consumer facility demand power measurement data 61D measured in the past.

  The database 62 receives the instantaneous time zone maximum power fluctuation value 53D (indicating the commercial power point maximum power fluctuation value, the commercial grid point power flow maximum power fluctuation value), and the maximum power fluctuation value for each past maximum instantaneous time zone. 24 hours database.

  The facility characteristic database 63 is a database of characteristics of each distributed power source (for example, power generation capacity of the distributed power source, load followability, operational restrictions, power generation cost, cost purchased from commercial system points).

  The demand power prediction means 65 generates demand power prediction data 65D from the demand power data 61D and the predicted temperature at the corresponding time.

  The next day power generation plan formulation means 71 prevents reverse power flow based on the demand power prediction data 65D, the maximum power fluctuation value 62D for the maximum instantaneous time zone from the database 62, and the facility characteristic data 63D from the facility characteristic database 63. -Reverse flow / resale prevention control means 72 for determining the total generated power of the distributed power source for preventing resale power, and economic distribution for distributing the total generated power to the most economical commercial system power and each distributed power source generated power The distributed power generation power and commercial grid power for the next day are planned by the control means 73. The formulated next day power generation plan data 71D is transmitted to the operation control means 81 at a predetermined time. The control terminal 91 and later will be described in the following description of FIG. 2C.

  FIG. 2C is a basic control block diagram of on-the-day operation control of the power monitoring measurement control system 5 of the microgrid in FIG.

  Each measurement terminal 51 measures power measurement data 51D from the power equipment 8, such as each power consumer equipment, commercial grid point, commercial interconnection point, distributed power source, and the like, and demand power measurement data 52D of each power consumer equipment. Is transmitted to the demand power database 61. Further, the maximum power fluctuation value of the commercial grid point power P1 and the commercial interconnection point power flow P2 is calculated for each instantaneous time zone, and the instantaneous time zone maximum power fluctuation value 53D is transmitted to the database 62. When the commercial connection point O2 or the measurement terminal 51b at the commercial connection point O2 detects an abnormality based on the abnormality detection set value, each distributed power generation power measurement data 54D and abnormality detection are immediately sent to the emergency correction power generation plan formulation means 75 on that day. Information 55D is transmitted.

  The demand power database 61 is a database of each power consumer facility demand power measurement data 61D measured in the past.

  The database 62 receives the instantaneous time zone maximum power fluctuation value 53D (indicating the commercial power point maximum power fluctuation value, the commercial grid point power flow maximum power fluctuation value), and the maximum power fluctuation value for each past maximum instantaneous time zone. 24 hours database.

  The facility characteristic database 63 is a database of characteristics of each distributed power source (for example, power generation capacity of the distributed power source, load followability, operational restrictions, power generation cost, cost purchased from commercial system points).

  The demand power prediction means 65 generates demand power prediction data 65D from the demand power data 61D and the predicted temperature at the corresponding time.

  The operation control means 81 periodically commands each control terminal 91 a distributed power generation target value command 81D based on the next day power generation plan data 71D sent from the next day power generation plan formulation means 71.

  Each control terminal 91 arranged for each distributed power source transmits a power generation target value command 91D to the corresponding distributed power source.

  Each of the distributed power sources K1 to KK controls the generated power based on the power generation target value command 91D from the control terminal.

  On the day, when the emergency power generation plan formulation means 75 receives each distributed power generation power measurement data 54D and abnormality detection information 55D from the measurement terminal 51, the maximum power fluctuation value 62D for the maximum instantaneous time zone, demand power prediction data On the day, emergency power generation plan data 75D is calculated from 65D, facility characteristic data 63D, and each distributed power generation power measurement data 54D, and transmitted to the operation control means 81.

  The operation control means 81 periodically commands each control terminal 91 a distributed power generation target value command 81D based on the emergency power generation plan data 75D on the day. Each control terminal 91 arranged for each distributed power source transmits a power generation target value command 91D to the corresponding distributed power source. Each of the distributed power sources K1 to KK controls the generated power based on the power generation target value command 91D from the control terminal.

  FIG. 3 is an explanatory diagram showing a flow of processing in the power monitoring measurement control system of the microgrid in FIG. The above description of FIGS. 2B and 2C explains the flow of processing in the power monitoring measurement control system of FIG. 3 in more detail.

  In step S1 (demand forecast (previous day)), demand power forecast data for the next day at the stage of the previous day is obtained.

  For each power consumer facility, the next day demand power forecast data is obtained from the past actual demand power and the next day forecast temperature.

  Graph S1G1 is LM power customer facility demand power prediction data, graph S1G2 is L1 power customer facility demand power prediction data, and so on. Total power consumer facility demand power forecast data (hereinafter, referred to as all power customer facility demand power forecast data other than LM).

  Furthermore, what added LM electric power consumer equipment demand power prediction data to the above all electric power consumer equipment demand power prediction data other than LM is called total electric power consumer equipment demand power prediction data, and shows it in graph S1G3.

  The graph S2G1 is shown on the same graph so that the graph S1G2 and the graph S1G3 can be distinguished.

  In step S2 (power generation plan (previous day)), the formula (1) and the flow F4 in FIG. 9 or the flow F4 from the power demand forecast data of the power consumer equipment (here, LM) and all the power consumer equipment with power flow restrictions are shown. Formula (2) of No. 9 and flow F5 are satisfied, and power generation plan data for the next day is formulated (FIG. 9 will be described in detail later). That is, as shown in the graph S2G2, the power generation plan data on the next day that satisfies the power flow constraint is larger than the total power customer facility demand power prediction data (graph S1G2) other than the LM, and the total power customer facility demand power prediction data (graph S1G3) Data is formulated in a smaller range.

  In step S3 (operation control (on the day)), a power generation target value is commanded at a period determined for each distributed power source, for example, every minute based on the power generation plan data formulated on the previous day from the previous day when the date is changed. Operation control is performed (flow F1 in FIG. 9 and F4 and F5 in FIGS. 12 to 14, which will be described in detail later). However, the commercial grid point power P1 and the commercial grid point power P2 are constantly monitored. This state is shown in graph S3G1. In the case where the power generation plan data is contained between the total power customer facility actual demand power ZD and the total power customer facility actual demand power LMD other than LM, and the power generation plan data is very consistent as the operation control value. is there.

  In step S4 (emergency correction power generation plan (on the day)), when the commercial grid point power P1 and the commercial grid point power flow P2 fall below the abnormality detection set value, the distributed power source is switched to prevent reverse power flow and resale. The power generation target value command 91D is given (the processing of the flow F2 in FIG. 10 and F4 and F5 in FIGS. 12 to 14 or the processing in the flow F3 in FIG. 11 and F4 and F5 in FIGS. 12 to 14 is executed. To do). This state is shown in graph S4G1. The actual power generation plan data deviated from the previous day deviates from the total power customer facility actual demand power ZD and the total power customer facility actual demand power LMD other than the LM, and commercial power resale occurs. The above calculation processing is performed to prevent commercial power resale, and the power generation target value command 91D is given to the distributed power source to avoid the occurrence of commercial power resale by using the emergency correction power generation plan data as the operation control value as in the graph S4G2. To do.

  FIG. 4 is an explanatory diagram showing the definition of the maximum power fluctuation value. 4A shows the commercial grid point maximum power fluctuation value 303, and FIG. 4B shows the commercial interconnection point maximum power fluctuation value 313.

  In FIG. 4A, the vertical axis represents power (kW) and the horizontal axis represents time. The solid line in the figure shows the fluctuation of the commercial system point power 301 (commercial system point power P1). In this embodiment, the instant time zone unit is set to 1 minute interval, and the difference between the maximum value and the minimum value of the fluctuation value of the commercial system point power 301 for 1 minute is taken, and the commercial system point maximum power fluctuation value in that time zone is taken. 303. An abnormality detection setting value 305 that determines an abnormality when the value is equal to or less than the setting value is determined as indicated by the lowermost dotted line.

  In FIG.4 (b), a vertical axis | shaft shows electric power (kW) and a horizontal axis shows time. The solid line in the figure shows the fluctuation of commercial interconnection point power flow 311 (commercial interconnection point power flow P2). In this embodiment, the instantaneous time zone unit is set to 1 minute interval, and the difference between the maximum value and the minimum value of the fluctuation value of the commercial interconnection point power flow 311 for 1 minute is taken, and the commercial interconnection point current flow in that time zone is taken. The maximum power fluctuation value 313 is defined. An abnormality detection set value 315 that determines an abnormality when the value is equal to or less than the set value is determined as indicated by a dotted line at the bottom.

  FIG. 5 is an explanatory diagram of operation control of the distributed power supply in the power monitoring measurement control system of the microgrid of the present embodiment, where the vertical axis indicates power (kW) and the horizontal axis indicates time. One minute of the same time zone as the commercial grid point maximum power fluctuation value 303 and the commercial interconnection point power flow maximum power fluctuation value 313 is extracted and displayed in FIG.

  The distributed power source is at a power level between the total power customer facility power (the power required by all customer facilities) 401 of the micro grid and the total power customer facility power 403 other than the micro grid receiving point customer facility LM. The sum total of the generated electric power 411, 413, 415, 417, 419 is determined as a planned value. The distributed power generation power 411, 413, 415, and 417 are power generation constant control type distributed power generation power that controls power generation to be constant, and the distributed power generation power 419 is a commercial system point power (all power customers). The power generated by the distributed power source is adjusted so that the power obtained by subtracting the sum of the distributed power source generated power 411, 413, 415, 417, 419 from the facility power 401 becomes constant at the power reception constant control value 421 in this time zone. It is. Distributed power source generated power 411, 413, 415, and 417 for constant power generation is composed of a base power source that is not good at rapid output adjustment, such as a fuel cell. The distributed power generation power 419 for which power reception constant control is performed is constituted by a power source whose output adjustment with respect to demand load fluctuations is relatively quick compared to a base power source such as a gas engine.

  FIG. 6 is an explanatory diagram of a power generation plan value formulation procedure (1) in the microgrid power monitoring measurement control system 5 of the present embodiment. The vertical axis in FIG. 6 indicates power (kW), the horizontal axis indicates time, and the procedure for selecting the power generation plan value when the maximum value of the power generation plan is greater than the minimum value of the power generation plan based on FIG. It is.

  The maximum commercial power point maximum power fluctuation value 303MAX in this time zone (for example, 12: 0 to 12:01) is the commercial power of this time zone (12: 0 to 12:01) in FIG. This is the maximum value in the past in the system point maximum power fluctuation value 303.

  In addition, the largest commercial interconnection point power flow maximum power fluctuation value 313MAX in this time zone (12: 0 to 12:01) is the commercial power in this time zone (12: 0 to 12:01) in FIG. This is the maximum value in the past in the interconnection point tidal current maximum power fluctuation value 313.

  The power generation plan value (maximum) 545 in this time zone (12: 00 to 12:01) is the maximum commercial power point maximum power fluctuation in this time zone from the one-minute integrated value 531 predicted for the total power consumer equipment demand power. This is a value obtained by subtracting the value 303MAX.

  In addition, the power generation plan value (minimum) 543 in this time zone (12: 0 to 12:01) is the largest commercial value in this time zone, which is the accumulated value for one minute 533 predicted for the demand power of all power customer facilities other than LM. This is a value obtained by adding the interconnection point tidal current maximum power fluctuation value 313MAX.

  The power generation plan value 541 in this time zone (12: 0 to 12:01) in consideration of the economic efficiency when the expression (1) described later is satisfied is larger than the power generation plan value (minimum) 543, and the power generation plan value (maximum). It is set to be smaller than 545.

  FIGS. 7 and 8 are explanatory diagrams of the power generation plan value formulation procedure (2) in the microgrid power monitoring measurement control system of the present embodiment. The vertical axis in FIG. 7 indicates power (kW), the horizontal axis indicates time, and the power generation plan value selection procedure when the maximum value of the power generation plan <the minimum value of the power generation plan is described.

  The maximum commercial power point maximum power fluctuation value 303MAX in this time zone (for example, 12: 0 to 12:01) is the commercial power of this time zone (12: 0 to 12:01) in FIG. This is the maximum value in the past in the system point maximum power fluctuation value 303.

  In addition, the largest commercial interconnection point power flow maximum power fluctuation value 313MAX in this time zone (12: 0 to 12:01) is the commercial power in this time zone (12: 0 to 12:01) in FIG. This is the maximum value in the past in the interconnection point tidal current maximum power fluctuation value 313.

  The power generation plan value (maximum) 645 in this time zone (12: 00 to 12:01) is the largest commercial system point maximum power fluctuation in this time zone from the one-minute integrated value 531 predicted for the total power consumer equipment demand power. This is a value obtained by subtracting the value 303MAX.

  In addition, the power generation plan value (minimum) 643 in this time zone (12: 0 to 12:01) is the largest commercial value in the past in this time zone to the integrated value 533 predicted for the demand power of all power consumer equipment other than LM. This is a value obtained by adding the interconnection point tidal current maximum power fluctuation value 313MAX.

  Since the power generation plan value (maximum) 645 and the power generation plan value (minimum) 643 in this time zone are the maximum value of the power generation plan <the minimum value of the power generation plan, the following equation (1) There is no solution that satisfies Therefore, as shown in FIG. 8, a power generation plan value that satisfies the following equation (2) is selected.

Power demand forecast value of all power customers other than the power consumer equipment LM at the power receiving point of the microgrid + Maximum power fluctuation value of the commercial grid connection point ≤ Total power generation of the distributed power source ≤ Forecast power demand value of the total power customer equipment- Commercial system point maximum power fluctuation value (1)

  That is, the difference between the 1-minute integrated value 531 predicted for the total power consumer facility demand power and the 1-minute integrated value 533 for the predicted total power consumer facility demand power other than the microgrid power receiving point customer facility, that is, the microgrid power receiving point demand The point where the one-minute integrated value predicted for household equipment demand power is prorated by the ratio between the largest commercial interconnection point power flow maximum power fluctuation value 313MAX and the largest commercial grid point maximum power fluctuation value 303MAX (ratio between 612 and 631). The power generation plan value 641 for this time zone is selected.

Predicted power demand for all power customers other than microgrid receiving point customer equipment + Predicted power demand for microgrid receiving point customer equipment x Maximum power fluctuation value for commercial interconnection point ÷ (Maximum power fluctuation for commercial grid point power flow) Value + commercial system point maximum power fluctuation value) (2) formula

  Hereinafter, a control flow with the power monitoring measurement control system 5 in the microgrid of the above embodiment as a core will be described.

  FIG. 9 shows the power monitoring measurement control system 5 in the microgrid 1 of FIG. 1 when the instantaneous commercial interconnection point power and the instantaneous commercial grid point power are both normal values (both are equal to or higher than the abnormality detection set value). It is the control flow figure (drawing of flow F1) made into the core.

  In step F1S1, the measurement of the instantaneous commercial grid point power and the instantaneous commercial interconnection point power is performed, for example, at intervals of 1 second.

  In step F1S2, here, the maximum value and the minimum value in the measurement period of 1 minute are selected for the both powers as the instantaneous time zone.

  In step F1S3, the (maximum value-minimum value) for each of the above two electric powers is set to the instantaneous maximum power fluctuation value for one minute (time period), that is, the commercial system point maximum power fluctuation value, the commercial interconnection point power flow maximum. The power fluctuation value. Steps F1S2 and F1S3 have already been described based on FIG. 4A and FIG. 4B.

  In step F1S4, the maximum power fluctuation value for one minute is compared with the past same-time maximum power fluctuation value stored in the database 62 (FIG. 2C). If it is larger than the past maximum variation value at the same time, step F1S5 is reached. If it is smaller than the past same-time maximum fluctuation value, the process reaches step F1S99, and the past same-time maximum power fluctuation value stored in the database 62 is not overwritten and updated.

  In step F1S5, the calculated value of F1S3 is used as the past maximum power fluctuation value at the same time, and the maximum power fluctuation value at the corresponding time stored in the database 62 is overwritten and updated. This overwriting may be performed for both the instantaneous commercial interconnection point power and the instantaneous commercial grid point power or only one of them.

  On the other hand, in step F1S21, demand power measurement data 52D (FIG. 2C) of each power consumer facility is measured here at intervals of 1 minute (unit).

  In step F1S22, the measurement data per minute is stored in the demand power database 61 (FIG. 2C).

  In step F1S23, the demand power prediction means 65 (FIG. 2C) generates demand power prediction data 65D from the past demand power data 61D (FIG. 2C) and the predicted temperature at the corresponding time.

  In step F1S6, if the next day power generation plan data 71D already exists, the process reaches F1S7, and if not, the process returns to F1S1 and F1S21.

  In step F1S7, the next day power generation plan formulation means 71 (FIG. 2C) uses the total power customer facility demand predicted power other than the microgrid power receiving point customer facility, the total power customer facility demand predicted power, and the database 62 (FIG. 2C). Power generation value 62D (FIG. 2C) and facility characteristic data 63D (FIG. 2C), which are the largest in the past, stored in the past, considering the lowest power generation cost (flow F4). Formulate. In this case, the modified power generation plan is determined so as to satisfy the following expression (1).

Predicted power demand value of all power customers other than microgrid receiving point consumer equipment + Maximum power fluctuation value of commercial grid connection point ≤ Total generated power of distributed power source ≤ Predicted power demand value of all power customer equipment-Commercial power grid point Maximum power fluctuation value (1)

When the solution of the power generation plan that satisfies the above equation (1) is obtained, step F1S9 is reached. The description of this step F1S7 was also mentioned in the description of FIG. 5 and FIG.
In step F1S8, in step F1S7, a corrected power generation plan for the time zone when there is no solution of the power generation plan that satisfies the above equation (1) is performed. The corrected power generation plan value for this time zone is determined by the following equation (2).

Predicted power demand value of all power customers other than microgrid receiving point customer facilities + Predicted power demand value of microgrid receiving point customer facilities × Maximum power fluctuation value of commercial interconnection point ÷ (Maximum power fluctuation of commercial grid point power flow) Value + commercial system point maximum power fluctuation value) (2) formula

  Here, when the solution of the power generation plan is determined to a value satisfying the above expression (2), the process proceeds to step F1S9. The description of this step F1S8 was also mentioned in the description of FIG. 7 and FIG.

  In step F1S9, the operation control means 81 of the day re-receives the next day power generation plan data 71D and overwrites and updates the existing next day power generation plan data. After the update process, the process returns to F1S1 and F1S21.

  FIG. 10 is a control flow diagram with the power monitoring measurement control system 5 as the core when the instantaneous commercial interconnection point power flow is abnormal (smaller than the abnormality detection set value) in the microgrid of FIG. ).

  In step F2S1, the measurement of instantaneous commercial grid point power and instantaneous commercial interconnection point power is performed, for example, at 1 second intervals.

  In step F2S2, when the instantaneous commercial interconnection point power is smaller than the abnormality detection set value, abnormality detection information 55D (FIG. 2C) is generated.

In Step F2S3, the commercial interconnection power flow power is
The past maximum power fluctuation value at the same time + (abnormality detection setting value-instantaneous commercial interconnection point power flow at the moment when the abnormality detection setting value is exceeded) is defined as the instantaneous commercial interconnection point power flow maximum power fluctuation value for 1 minute. If the commercial system point power here is not less than the abnormality detection set value, it is performed in the same manner as in the normal state (similar to FIG. 9).

  In step F2S4, the past maximum power fluctuation value at the same time in the database 62 is overwritten with the above-mentioned commercial interconnection point power flow maximum power fluctuation value.

  On the other hand, in step F2S21, demand power measurement data 52D (FIG. 2C) of each power consumer facility is measured here at intervals of 1 minute (unit).

  In step F2S22, the measurement data per minute is stored in the demand power database 61 (FIG. 2C).

  In step F2S23, the demand power prediction means 65 (FIG. 2C) generates demand power prediction data 65D from the past demand power data 61D (FIG. 2C) and the predicted temperature at the corresponding time.

  In step F2S5, on the day of the emergency corrected power generation plan formulation means 75 (FIG. 2C), the total power customer facility power demand forecast value, the total power customer facility demand power forecast value other than the microgrid power receiving point customer facility, the database 62 From the past maximum instantaneous power fluctuation value 62D (FIG. 2C), facility characteristic data 63D (FIG. 2C) and each distributed power generation power measurement data 54D (FIG. 2C) stored in (FIG. 2C), A modified power generation plan for a distributed power source is formulated in consideration of the lowest power generation cost (Flow F4). This emergency correction power generation plan is determined so as to satisfy the above formula (1). When the solution of the power generation plan that satisfies the above equation (1) is obtained, step F2S7 is reached. In step F2S6, in step F2S5, an emergency correction power generation plan in a time zone when there is no solution of the power generation plan that satisfies the above equation (1) is performed. The emergency correction power generation plan value in this time zone is determined by the above equation (2). When the emergency correction power generation plan value is determined, the process proceeds to step F2S7.

  In step F2S7, the day-time operation control means 81 receives the emergency correction power generation plan data 75D and transmits a power generation target value command 81D based on the emergency correction power generation plan data to each control terminal 91. Return to F2S21.

  On the other hand, in step F2S8, the control terminal 91 commands a power generation target value command 81D to each distributed power source.

  In step F2S9, each distributed power source adjusts the generated power based on the commanded power generation target value command 81D to prevent commercial power resale.

  FIG. 11 is a control flow diagram (figure F3) centered on the power monitoring measurement control system 5 in the microgrid of FIG. 1 when the instantaneous commercial system point power is abnormal (when it is below the abnormality detection set value). is there.

  In step F3S1, the measurement of the instantaneous commercial grid point power and the instantaneous commercial interconnection point power is performed at intervals of 1 second, for example.

  In step F3S2, when the instantaneous commercial system point power is smaller than the abnormality detection set value, abnormality detection information 55D is generated.

In step F3S3, for commercial grid point power,
Maximum power fluctuation value at the same time in the past + (Abnormality detection setting value-Instantaneous commercial system point power at the moment of dividing the abnormality detection setting value)
Is the instantaneous commercial system maximum power fluctuation value for 1 minute. If the commercial interconnection point power flow here is not lower than the abnormality detection set value, it is performed in the same manner as normal (similar to FIG. 9).

  In step F3S4, the commercial grid point power in the past maximum power fluctuation value in the database 62 is overwritten with the commercial grid point maximum power fluctuation value.

  On the other hand, in step F3S21, the demand power measurement data 52D (FIG. 2C) of each power consumer facility is measured here at intervals of 1 minute (unit).

  In step F3S22, the minute measurement data is stored in the demand power database 61 (FIG. 2C).

  In step F3S23, the demand power prediction means 65 (FIG. 2C) generates demand power prediction data 65D from the past demand power data 61D (FIG. 2C) and the predicted temperature at the corresponding time.

  In step F3S5, on the day of the emergency correction power generation plan formulation means 75 (FIG. 2C), the predicted power demand value for all power customer facilities other than the microgrid power receiving point customer facility, the predicted power demand value for all power customer facilities, database 62 From the past maximum instantaneous power fluctuation value 62D (FIG. 2C), facility characteristic data 63D (FIG. 2C) and each distributed power generation power measurement data 54D (FIG. 2C) stored in (FIG. 2C), Develop an emergency correction power generation plan for the distributed power source considering the lowest power generation cost (Flow F4). In this case as well, this emergency correction power generation plan is determined so as to satisfy the above formula (1).

  When the solution of the power generation plan that satisfies the above equation (1) is obtained, step F3S7 is reached.

  In step F3S6, in step F3S5, an emergency correction power generation plan in a time zone when there is no solution of the power generation plan that satisfies the above equation (1) is performed. The emergency correction power generation plan value in this time zone is determined by the above equation (2). When the emergency correction power generation plan value is determined, the process proceeds to step F3S7.

  In step F3S7, the day-time operation control means 81 receives the emergency correction power generation plan data 75D and transmits a power generation target value command 81D based on the emergency correction power generation plan data to each control terminal 91. Return to F2S21.

  On the other hand, in step F3S8, the control terminal 91 commands a power generation target value command 81D to each distributed power source.

  In step F3S9, each distributed power source adjusts the generated power based on the commanded power generation target value command 81D to prevent the occurrence of reverse power flow to the commercial system point O1 (FIG. 1).

  Next, the calculation process of the power generation plan in consideration of the minimum power generation cost will be described with reference to FIGS.

  FIG. 12 is a flowchart corresponding to the power generation plan value formulation procedure (1) in FIG. 6 with the power monitoring measurement control system 5 in the power generation plan calculation process taking into account the minimum power generation cost in the microgrid in FIG. 1 as the core. (Figure of flow F4). 13 corresponds to the power generation plan value formulation procedure (1) in FIG. 6 and is a flow diagram (flow) centered on the power monitoring measurement control system 5 of the power generation plan calculation processing considering the lowest power generation cost following FIG. It is a continuation figure of F4). Flow 4 is a calculation process of a power generation plan in consideration of the minimum power generation cost applied when the above equation (1) is satisfied.

In step F4S1, the economic distribution means 73 (FIG. 2C)
Total power consumer equipment demand power forecast value-commercial system point maximum power fluctuation value ... Formula F401,
All power consumer facility demand power predicted value other than microgrid power receiving point customer facility + commercial interconnection point tidal current maximum power fluctuation value ··· Formula F402 is calculated.

In step F4S2, from the facility characteristic data 63D of the power generation cost (total of fuel cost, maintenance cost, various expenses, etc.) (yen / kWh) of the distributed power source, and the power rate (yen / kWh) purchased from the commercial grid point,
Calculated value of Formula F402—Distributed type power supply with the lowest power generation cost (excluding distributed type power source with constant power reception control) transmittable capacity. Formula F403 is calculated.

In step F4S3, if the calculated value of expression F403 is greater than 0, in step F4S4,
Calculated value of Formula F403—Calculate Formula F404 which is the second cheapest distributed power source (excluding the distributed power source that performs constant power reception control).

In step F4S3, if the calculated value of expression F404 is greater than 0, in step F4S4,
Calculated value of Formula F404 -N + 1 The cheapest distributed power source (excluding the distributed power source with constant power reception control) transmittable capacity is calculated as the latest calculated value of Formula F404.

Similarly, when the calculation of step F4S3, step F4S4, step F4S3,... Is repeated and the calculation value of expression F404 becomes 0 or less for the first time, in step F4S5,
N-th lowest distributed power source (excluding distributed power source with constant power reception control) power generation cost—electric power price purchased from commercial grid point—formula F405 is calculated.

In step F4S6, when the calculated value of expression F405 is greater than 0, the power generation plan value of the Nth lowest distributed power source is determined in step F4S7.
Formula F402- (first lowest distributed power transmission capacity) + second lowest distributed power transmission capacity + ... + N-1 lowest distributed power transmission capacity).

In step F4S8,
Power generation cost of distributed power source for which power reception constant control is performed-electric power charge purchased from the commercial grid point. Formula F406 is calculated.

In step F4S9, when the calculated value of expression F406 is greater than 0, in step F4S10,
The constant power reception control value of the distributed power source that performs constant power reception control is designated as the total power consumer facility predicted power-calculated value of Formula F406.

In step F4S9, when the calculated value of the expression F406 is 0 or less, in step F4S11,
Instruct the constant power reception control value of the distributed power source with constant power reception as the maximum power fluctuation value of the commercial system.

  In Step F4S6, when the calculated value of Formula F405 is 0 or less, the process reaches FIG.

In step F4S12 of FIG.
M-th lowest distributed power source (excluding distributed power source with constant power reception control) power generation cost-power charge purchased from the commercial system.

In step F4S13, when the calculated value of the expression F407 is larger than 0, in step F4S14,
(1st cheapest distributed power transmission capacity +... + M-1 first cheapest distributed power transmission capacity) -calculated value of Formula F401. Formula F408 is calculated.

In step F4S15, when the calculated value of Expression 408 is larger than 0, in step F4S16,
The power generation plan value of the M-1st cheapest distributed power source is used as the calculated value of the M-1st cheapest distributed power transmission capacity-Formula F408. Instructed as system point maximum power fluctuation value.

In step F4S15, when the calculated value of expression F408 is 0 or less, in step F4S17,
Power generation cost of distributed power source for which power reception constant control is performed-electric power charge purchased from the commercial grid point. Formula F406 is calculated.

In step F4S18, when the calculated value of the expression F406 is larger than 0, in step F4S19,
The power generation plan value of the M-1st cheapest distributed power source is set as the M-1st cheapest distributed power transmission capacity, and the power receiving constant control value of the distributed power source that performs constant power receiving control is the commercial power point maximum power fluctuation value. -Specify as the calculated value of Formula F408.

In step F4S18, when the calculated value of expression F406 is 0 or less, in step F4S20,
The power generation plan value of the M-1st cheapest distributed power source is set as the M-1st cheapest distributed power transmission capacity, and the power receiving constant control value of the distributed power source that performs constant power receiving control is the commercial power point maximum power fluctuation value. Instruct as.

In step F4S13, when the calculated value of expression F407 is 0 or less, in step F4S21,
(First lowest-cost distributed power transmission capacity +... + M-th lowest distributed power transmission capacity) -Calculated value of Formula F401 Formula F409 is calculated.

In step F4S22, when the calculated value of the expression F409 is larger than 0, in step F4S23,
The power generation cost of the M-th lowest distributed power source—the power generation cost of the distributed power source for which power reception constant control is performed. Formula F410 is calculated.

In step F4S24, when the calculated value of expression F410 is greater than 0, in step F4S25,
The power generation plan of the M-th lowest distributed power source is designated as 0, and the constant power reception control value of the distributed power source that performs constant power reception control is designated as the maximum power fluctuation value of the commercial system.

In step F4S24, when the calculated value of the expression F410 is 0 or less, in step F4S26, the power generation plan value of the Mth lowest distributed power source is set.
As the calculated value of the Mth lowest distributed power transmission capacity-Formula F409, the constant power reception control value of the distributed power source for which power reception is controlled is instructed as the maximum power fluctuation value of the commercial system point.

In step F4S22, when the calculated value of expression F409 is 0 or less,
As M = M + 1, the process returns to step F4S13.

  Similarly, the calculation of F4S13, F4S22, F4S13,... Is repeated until all of the power generation plan value of the distributed power source that does not perform constant power reception control and the constant power reception control value of the distributed power source that performs constant power reception control are determined. The economic distribution control means 73 is completed.

  Next, FIG. 14 shows a power monitoring measurement control system for power generation plan calculation processing considering the lowest power generation cost in the microgrid 1 of FIG. 1, corresponding to the power generation plan value formulation procedure (2) of FIGS. It is a flow figure (figure F5) which made 5 the core. The flow F5 is a power generation plan calculation process that takes into consideration the minimum power generation cost that is applied when the power generation plan value is determined by the above equation (2).

In step F5S1, the economic distribution control means 73 (FIG. 2C)
Predicted value of total power customer facility demand other than microgrid receiving point customer facility + predicted value of microgrid receiving point power customer facility demand × commercial interconnection point maximum power fluctuation value ÷ (commercial interconnection point tidal current maximum power Fluctuation value + commercial system point maximum power fluctuation value) (2) is calculated.

In step F5S2, from the facility characteristic data 63D including the power generation cost (total of fuel cost, maintenance cost, various expenses, etc.) Yen / kWh of the distributed power source, and the power rate Yen / kWh purchased from the commercial grid point,
Calculated value of equation (2)-1/2 of the distributed power transmission capacity capable of constant power reception control-2nd lowest distributed power generation cost (excluding the distributed power source controlled constant power transmission capacity) ... Formula F501 is calculated.

If the calculated value of the expression F501 is larger than 0 in step F5S3, in step F5S4,
Calculated value of Formula F501—Calculates the second cheapest distributed power source (excluding the distributed power source with constant power reception control) transmittable capacity Formula F502.

In step F5S3, if the calculated value of expression F502 is greater than 0, in step F5S4,
Calculated value of Formula F502 -N + 1 The cheapest distributed power source (excluding the distributed power source with constant power reception control) transmittable capacity is calculated as the latest calculated value of Formula F502.

Similarly, when the calculation of step F5S3, step F5S4, step F5S3,... Is repeated and the calculation value of the expression F502 becomes 0 or less for the first time, in step F5S5,
The power generation plan value of the Nth lowest distributed power supply is calculated as the Nth lowest distributed power transmission capacity-formula F502.
The constant power reception control value of the distributed power source that performs constant power reception control is the total power consumer facility demand forecast power minus the calculated value of equation (2).

  Thus, all of the power generation plan value of the distributed power source that is not subjected to constant power reception control and the constant power reception control value of the distributed power source that is subjected to constant power reception are determined, and the operation of the economic distribution control means 73 is completed.

  As described above, the power monitoring measurement control system of the microgrid according to the present invention determines the power generation plan value for the next day in advance according to the maximum fluctuation value of the power demand for each instantaneous time zone, and performs the operation control of the day based on this. It is useful as a system that can quickly and accurately handle changes in supply and demand, and is particularly suitable for industrial production and use.

1 is a configuration diagram of a microgrid including a microgrid power monitoring measurement control system according to an embodiment of the present invention. FIG. It is a basic block diagram of the electric power monitoring measurement control system of the microgrid of FIG. It is a basic control block diagram of the next day power generation plan of the power monitoring measurement control system of the micro grid of FIG. FIG. 2 is a basic control block diagram of the day operation control of the microgrid power monitoring measurement control system 5 of FIG. 1. It is explanatory drawing which shows the flow of a process in the electric power monitoring measurement control system of the micro grid of FIG. (A) is explanatory drawing of the definition of the maximum electric power fluctuation value of commercial system point electric power in the electric power monitoring measurement control system of the microgrid of FIG. (B) is explanatory drawing of the definition of the maximum electric power fluctuation value of commercial connection point tidal power in the electric power monitoring measurement control system of the microgrid of FIG. It is explanatory drawing of the operation control of the distributed power supply in the electric power monitoring measurement control system of the micro grid of FIG. It is explanatory drawing of the formulation procedure (1) of the electric power generation plan value in the electric power monitoring measurement control system of the micro grid of FIG. It is explanatory drawing of the formulation procedure (2) -1 of the electric power generation plan value in the electric power monitoring measurement control system of the micro grid of FIG. It is explanatory drawing of the formulation procedure (2) -2 of the electric power generation plan value in the electric power monitoring measurement control system of the micro grid of FIG. FIG. 2 is a control flow diagram (flow F1) centering on a power monitoring measurement control system when the instantaneous commercial interconnection point power and instantaneous commercial grid point power are both normal values in the microgrid of FIG. 1; FIG. 2 is a control flow diagram (flow F <b> 2) centered on a power monitoring measurement control system when the instantaneous commercial interconnection point power flow in the microgrid of FIG. 1 is an abnormal value. FIG. 2 is a control flow diagram (flow F3) centering on a power monitoring measurement control system when instantaneous commercial system point power in the microgrid of FIG. 1 is an abnormal value. FIG. 5 is a flowchart (flow F4) corresponding to the power generation plan value formulation procedure (1) in FIG. 5 centered on the power monitoring measurement control system of the power generation plan calculation processing in consideration of the minimum power generation cost in the microgrid in FIG. is there. The flow diagram (continuation of flow F4) centering on the power monitoring measurement control system of the power generation plan calculation processing considering the lowest power generation cost following FIG. 12, corresponding to the power generation plan value formulation procedure (1) of FIG. is there. Flow diagram centered on the power monitoring and measurement control system for power generation plan calculation processing considering the lowest power generation cost in the microgrid in FIG. 1 corresponding to the power generation plan value formulation procedure (2) in FIGS. F5).

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Microgrid, 2 General electric power company electric power network (electric power company), 5 Electric power monitoring measurement control system, 5C Measurement / control line, 8 Electric power equipment, 51 Each measuring terminal, 51a Other electric power consumer equipment L1 ... LL Measurement terminal 51b connected to commercial interconnection point O2 and distributed power source K1... KK, measurement / control terminal connected to KK, 51D power measurement data, 52D power demand measurement data for each power consumer facility, 53D instantaneous Time zone maximum power fluctuation value, 54D distributed power generation measurement data, 55D anomaly detection information, 61 demand power database, 61D data measured for each power consumer facility measured in the past, 62 database, 62D maximum power fluctuation per instantaneous time zone Value, 63 equipment characteristic database, 63D equipment characteristic data, 65 demand power prediction means, 65D demand power forecast data 71 Next day power generation plan formulation means, 71D Next day power generation plan data, 72 Reverse power flow / resale prevention control means, 73 Economic distribution control means, 75 Day emergency correction power generation plan formulation means, 75D Day emergency generation plan data, 81 Operation control means, 81D Distributed power generation target value command, 91 (51b) Each control terminal, 91D Power generation target value command, 301 Commercial system point power (commercial system point power P1), 303 Commercial system point maximum power fluctuation value, 305 Abnormality detection set value 311 Commercial interconnection point tidal current power (commercial interconnection point tidal power P2), 313 Commercial interconnection point tidal current maximum power fluctuation value, 315 Abnormality detection set value, 401 Micro grid all power customer facility power (all customer facility power) 403, 413, 413, all power customer facility power other than 403 microgrid receiving point customer facility LM 15, 417, 419 Distributed power generation power, 421 Power reception constant control value, 303MAX This time zone (e.g., 12: 0 to 12:01), the largest commercial system point maximum power fluctuation value in the past, 313MAX this time zone (12: 0 to 12:01) The largest commercial interconnection point tidal current maximum power fluctuation value in the past, 531 Total power customer facility demand power predicted 1 minute integrated value, 533 LM All power customer facility demand power forecast 1 minute integrated value, 541 Power generation plan value in this time zone (12: 0 to 12:01) considering economics when satisfying the formula (1), 543 This time zone (12: 0 to 12:01) Power generation plan value (minimum), 545 Power generation plan value (maximum) in this time zone (12: 0 to 12:01), ratio of 612 and 631 The largest commercial interconnection point tidal current maximum power fluctuation value 313 Ratio of AX and the maximum commercial power point maximum power fluctuation value 303MAX, 641 Power generation plan value in this time zone, 643 Power generation plan value (minimum) in this time zone (12: 0 to 12:01), 645 Time zone (12: 0 to 12:01) power generation plan value (maximum), CPU central processing unit, F1 to F5 flow, F1SI to F1S9, F1S21 to F1S23, F1S99, F2S1 to F2S9, F2S21 to F2S23, F3S1 to F3S9, F3S21 Thru F3S23, F4S1 thru F4S26, F5S1 thru F5S5 step, IT communication means, K1 thru KK distributed power source, KB power cable, LM microgrid power point power consumer equipment, L1 thru LL other power consumer equipment, LMD LM All power customer facility performance demand power, except O Commercial grid point, O2 commercial grid point, P1 commercial grid point power, P2 commercial grid point power, P3 PL1 to PLL total supply power, PK1 to PKK power from distributed power sources K1 to KK, PL1 to PLL power Power to customer facilities L1 to LL, RP1 reverse power flow, RP2 reverse power flow (resale power), S1, S2, S3, S4 steps, S1G1, S1G2, S1G3, S2G1, S2G2, S3G1, S4G1, S4G2 graph, U- DESCRIPTION OF SYMBOLS 1 Memory | storage device, U-2 arithmetic processing unit, U-3 display apparatus, U-4 communication apparatus, ZD Total electric power consumer equipment actual demand electric power, (1), (2), F401 thru | or F410, F501, F502 type | formula.

Claims (45)

A power monitoring measurement control system in a microgrid including a power consumer facility of a microgrid receiving point that receives commercial grid power from a general electric utility power grid, and one or more distributed power sources that supply power to the power grid ,
Calculate the maximum power fluctuation value by receiving the maximum and minimum power measurement values of the commercial grid point power for each instantaneous time zone, receive the maximum power fluctuation value of the past in the instantaneous time zone at the same time, Based on the maximum power fluctuation value that is larger than the calculated maximum power fluctuation value, the power generation plan formulation means performs a power generation plan on the next day of each of the distributed power sources and performs operation control on the day based on the power generation plan. Microgrid power monitoring measurement control system characterized by this.   2. The microgrid according to claim 1, wherein the power generation plan on the next day and the operation control on the day of the distributed power sources are on condition that the reverse power flow of the distributed power generation power to the commercial grid point is prevented. Power monitoring measurement control system. For each instantaneous time period,
Below the maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the power consumer facility demand power predicted value of the microgrid power receiving point,
The power monitoring measurement control system for a microgrid according to claim 1 or 2, wherein a power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined.   4. The microgrid power monitoring measurement control system according to claim 3, wherein the distributed power source is selected in a descending order of power generation cost from a power supply amount below the maximum power generation plan value. 5.   5. The microgrid according to claim 4, wherein the selection of stacking of the distributed power sources up to a power supply amount equal to or less than the maximum power generation plan value is performed by predicting any failure of the distributed power sources. Power monitoring measurement control system.   2. An abnormality detection threshold value is set for a measured value of commercial system point power, and when the measured value exceeds the threshold value, a corrected power generation plan is immediately calculated and re-commanded to the distributed power source. The microgrid power monitoring measurement control system according to any one of items 1 to 5. In a microgrid including a power consumer facility at a microgrid receiving point that receives commercial grid power from a general electric utility power grid, another power consumer facility, and one or more distributed power sources that supply power to these facilities A power monitoring measurement control system,
Receiving the maximum and minimum measured values of commercial grid point power and commercial interconnection point power flow for each instantaneous time zone, calculate each maximum power fluctuation value, and within each instantaneous time zone at the same time Based on the maximum power fluctuation value that is larger than the maximum power fluctuation value in the past, the power generation plan for the next day of each of the distributed power sources is performed, and the operation control on the day is performed based on the power generation plan. Microgrid power monitoring measurement control system.   The power generation plan for the next day of each of the distributed power sources and the operation control on that day prevent the reverse power flow of the distributed power generation power to the commercial grid point, and from the commercial interconnection point in the microgrid to the other power demand facility The power monitoring measurement control system for a microgrid according to claim 7, which is subject to prevention of resale of commercial power. For each instantaneous time period,
A maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the all-customer facility power demand predicted value,
Between the power generation forecast value of all electric power consumer equipment other than the customer equipment at the power receiving point of the microgrid, and the minimum power generation plan value obtained by adding the larger maximum power fluctuation value of the commercial interconnection point power In addition,
The power monitoring measurement control system for a microgrid according to claim 7 or 8, wherein a power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined.   The power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined between the maximum power generation plan value and the minimum power generation plan value when the values are reversed. Item 10. The microgrid power monitoring measurement control system according to Item 9.   The power generation plan value for the next day of the distributed power source in the instantaneous time period between the maximum power fluctuation value of the commercial grid point power and the maximum power fluctuation value of the commercial interconnection point power flow, the customer facility of the microgrid power receiving point The estimated power demand for all power customers except for the power demand for the power demand for the facility at the microgrid receiving point is calculated as [maximum power fluctuation value for commercial interconnection point ÷ (maximum power fluctuation value for commercial interconnection point + commercial power) 11. The microgrid power monitoring measurement control system according to claim 10, wherein a value obtained by multiplying by the system point maximum power fluctuation value)] is determined. It includes an operation control means for selecting the distributed power source in order of increasing power generation cost and setting the value obtained by subtracting the generated power accumulated from the estimated power demand for all power consumer facilities as commercial power. For the distributed power source having a lower power generation cost, the maximum power fluctuation value of the larger one of the commercial interconnection point power is compared to the predicted power demand value of all the power customer facilities other than the micro grid receiving point customer facility. Generated power that does not exceed the maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the total power customer facility power demand prediction value exceeding the minimum power generation plan value added The value obtained by subtracting the accumulated generated power from the predicted value of the total power consumer equipment demand power is selected as the commercial power until the power generation cost is low.
If the minimum power generation plan value cannot be stacked only with a distributed power source having a power generation cost lower than that of commercial power, the power generation cost of the distributed power source higher than that of the commercial power is selected in order from the lowest power generation cost until the minimum power generation plan value is reached. , The value obtained by subtracting the generated power accumulated from the predicted power demand value of all power consumer equipment is commercial power,
When only the distributed power source with power generation cost cheaper than commercial power is more than the maximum power generation plan value, the stacking selection is performed until the maximum power generation plan value is just reached, and the power generation facility is estimated from the power demand forecast value for all power customers. 10. The microgrid power monitoring measurement control system according to claim 7, wherein a value obtained by subtracting the generated power is used as commercial power.   When the maximum power generation plan value and the minimum power generation plan value are reversed values, a value obtained by subtracting 1/2 of the transmittable capacity of the distributed power source that performs constant power reception control from the power generation plan value 12. The micro power supply according to claim 10, wherein distributed power sources are stacked in ascending order of power generation cost, and commercial power is obtained by subtracting the power generation plan value from the predicted power demand value of all power customers' facilities. Grid power monitoring measurement control system.   The stacked selection of the distributed power source up to a power supply amount that does not exceed the demand of the total power customer facility power is performed by predicting any failure of the distributed power source. 14. A power monitoring measurement control system for a microgrid according to 13.   An abnormality detection threshold is set for both the measured value of commercial grid point power and the measured value of commercial grid point power, and when any of these measured values exceeds the threshold, the measured value is calculated from the threshold. The value obtained by adding the maximum maximum power fluctuation value in the past at the same time instant time zone to the subtracted value is immediately calculated as the new maximum maximum power fluctuation value in the same time instant time zone, and the corrected power generation plan is immediately calculated. The microgrid power monitoring measurement control system according to any one of claims 7 to 14, wherein a re-command is issued to the distributed power source. A power monitoring measurement control method in a microgrid including a power consumer facility at a microgrid receiving point that receives commercial grid power from a general electric utility power grid, and one or more distributed power sources that supply power to the power grid ,
The step of calculating the maximum power fluctuation value by receiving the maximum and minimum power measurement values of the commercial system point power for each instantaneous time zone, and receiving the maximum maximum power fluctuation value in the same time instant time zone. A step of selecting a larger maximum power fluctuation value compared to the calculated maximum power fluctuation value, and a power generation plan for the next day of each distributed power source based on the larger maximum power fluctuation value And a step of performing operational control of the day based on the power generation plan.   The step of performing the power generation plan for the next day for each of the distributed power sources and the step of performing the operation control for the current day are conditional on prevention of reverse power flow of the distributed power generation power to a commercial grid point. Item 17. The microgrid power monitoring measurement control method according to Item 16. The step of performing the power generation plan for the next day of each of the distributed power sources, for each instantaneous time zone,
Below the maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the power consumer facility demand power predicted value,
The power monitoring measurement control method for a microgrid according to claim 16 or 17, wherein a power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined.   19. The microgrid power monitoring and measurement control method according to claim 18, further comprising a step of selecting the distributed power sources in order from the lowest power generation cost to the power supply amount equal to or less than the maximum power generation plan value.   21. The micro of claim 19, wherein the step of selecting and stacking the distributed power sources up to a power supply amount equal to or less than the maximum power generation plan value is performed by predicting any failure of the distributed power sources. Grid power monitoring measurement control method.   A threshold value for detecting an abnormality is set in the measured value of the commercial grid point power, and when the measured value exceeds the threshold value, a corrected power generation plan is immediately calculated and re-commanded to the distributed power source. The power monitoring measurement control method for a microgrid according to any one of claims 16 to 21. In a microgrid including a power consumer facility at a microgrid receiving point that receives commercial grid power from a general electric utility power grid, another power consumer facility, and one or more distributed power sources that supply power to these facilities A power monitoring measurement control method,
Receiving the maximum and minimum measured values of commercial grid point power and commercial interconnection point power for each instantaneous time zone, and calculating each maximum power fluctuation value; The step of selecting a larger maximum power fluctuation value compared to the maximum power fluctuation value in the past, and the next day power generation of each of the distributed power sources based on the larger maximum power fluctuation value compared to each other A power monitoring measurement control method for a microgrid, comprising: a step of performing a plan; and a step of performing operation control of the day based on the power generation plan.   The step of performing the power generation plan for the next day of each of the distributed power sources and the step of performing the operation control on the day include the prevention of reverse power flow of the distributed power generation power to the commercial grid point and the commercial grid point in the microgrid. 23. The power monitoring measurement control method for a microgrid according to claim 22, wherein the commercial power is prevented from being resold to another power demand facility. The step of performing a power generation plan for the next day of each of the distributed power sources,
For each instantaneous time period,
A maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the all-customer facility power demand predicted value,
Between the power generation forecast value of all electric power consumer equipment other than the customer equipment at the power receiving point of the microgrid, and the minimum power generation plan value obtained by adding the larger maximum power fluctuation value of the commercial interconnection point power In addition,
The power monitoring measurement control method for a microgrid according to claim 22 or 23, wherein a power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined. The step of performing a power generation plan for the next day of each of the distributed power sources,
Even when the maximum power generation plan value and the minimum power generation plan value are reversed, the power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined between them. The microgrid power monitoring measurement control method according to claim 24. The step of performing a power generation plan for the next day of each of the distributed power sources,
The power generation plan value for the next day of the distributed power source in the instantaneous time period between the maximum power fluctuation value of the commercial grid point power and the maximum power fluctuation value of the commercial interconnection point power flow, the customer facility of the microgrid power receiving point The predicted power demand value of all power customers except for the power demand forecast value at the microgrid power receiving point is calculated as [Maximum power fluctuation value of commercial grid connection point ÷ (Maximum power fluctuation value of commercial grid power flow + Commercial grid 26. The microgrid power monitoring measurement control method according to claim 25, wherein a value obtained by multiplying the value obtained by multiplying the maximum point power fluctuation value)] is determined. The distributed power source includes a step of selecting and stacking the distributed power source in ascending order of power generation cost, and subtracting the power generation power accumulated from the total power consumer facility demand power predicted value to obtain commercial power. The distributed power source having a power generation cost lower than the power cost is set to the predicted power demand value of all power consumer facilities other than the microgrid power receiving point customer facility. The maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the total power consumer facility demand power prediction value does not exceed the minimum power generation plan value added with the value. The value obtained by subtracting the generated power accumulated from the predicted power demand value of all the power customer facilities is selected as the commercial power, and the power generation cost is selected in ascending order of the power generation cost.
If the minimum power generation plan value cannot be stacked only with a distributed power source having a power generation cost lower than that of commercial power, the power generation cost of the distributed power source higher than that of the commercial power is selected in order from the lowest power generation cost until the minimum power generation plan value is reached. , The value obtained by subtracting the generated power accumulated from the predicted power demand value of all power consumer equipment is commercial power,
When only the distributed power source with power generation cost cheaper than commercial power is more than the maximum power generation plan value, the stacking selection is performed until the maximum power generation plan value is just reached, and the power generation facility is estimated from the power demand forecast value for all power customers. 25. The microgrid power monitoring measurement control method according to claim 22, wherein a value obtained by subtracting the generated power is used as commercial power.   When the maximum power generation plan value and the minimum power generation plan value are reversed values, a value obtained by subtracting 1/2 of the transmittable capacity of the distributed power source that performs constant power reception control from the power generation plan value 27. The method according to claim 25 or 26, further comprising the step of stacking distributed power sources in ascending order of power generation cost and setting commercial power as a value obtained by subtracting the power generation plan value from the total power consumer facility demand power predicted value. The microgrid power monitoring measurement control method described.   The step of selecting and stacking the distributed power sources up to a power supply amount that does not exceed the demand of the total power customer facility power is performed by predicting any failure of the distributed power sources. Item 29. The microgrid power monitoring measurement control method according to Item 27 or 28.   An abnormality detection threshold is set for both the measured value of commercial grid point power and the measured value of commercial grid point power, and if any of these measured values exceeds the threshold, the measured value is calculated from the threshold. The value obtained by adding the maximum maximum power fluctuation value in the past at the same time instant time zone to the subtracted value is immediately calculated as the new maximum maximum power fluctuation value in the same time instant time zone, and the corrected power generation plan is immediately calculated. 30. The microgrid power monitoring measurement control method according to any one of claims 22 to 29, further comprising a step of re-commanding to the distributed power source. Power monitoring and measurement control in a microgrid including a power consumer facility at a microgrid receiving point that receives commercial grid power from a general electric utility power grid and one or more distributed power sources that supply power to the computer. A microgrid power monitoring measurement control program for
The procedure to calculate the maximum power fluctuation value by receiving the maximum and minimum power measurement values of the commercial grid point power for each instantaneous time zone, and the largest maximum power fluctuation value in the same time instant time zone In response, the procedure for selecting the larger maximum power fluctuation value compared to the calculated maximum power fluctuation value, and the next day of each of the distributed power sources based on this larger maximum power fluctuation value A microgrid power monitoring measurement control program for executing a procedure for performing a power generation plan and a procedure for performing operation control on the day based on the power generation plan.   The procedure for performing the power generation plan for the next day for each of the distributed power sources and the procedure for performing the operation control for the current day are conditional on prevention of reverse power flow of the distributed power generation power to the commercial grid point. Item 32. The microgrid power monitoring measurement control program according to Item 31. The procedure for performing the power generation plan for the next day of each of the distributed power sources is, for each instantaneous time zone,
The power generation plan for the next day of the distributed power source in the instantaneous time zone is less than or equal to the maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the power consumer facility power demand prediction value. 33. The microgrid power monitoring measurement control program according to claim 31 or 32, wherein a value is determined.   34. The microgrid power monitoring measurement control program according to claim 33, further causing a computer to execute a procedure for stacking and selecting the distributed power source from the lowest power generation cost to a power supply amount equal to or less than the maximum power generation plan value. .   36. The procedure for selecting and stacking the distributed power sources up to a power supply amount equal to or less than the maximum power generation plan value is performed by predicting any failure of the distributed power sources. Microgrid power monitoring measurement control program.   Further, when a threshold value for abnormality detection is set to the measured value of the commercial grid point power, and when this measured value exceeds the threshold value, the computer immediately executes a procedure for calculating a corrected power generation plan and re-instructing the distributed power source. The power monitoring measurement control program for a microgrid according to any one of claims 31 to 35. In a microgrid including a power consumer facility at a microgrid receiving point that receives commercial grid power from a general electric utility power grid, another power consumer facility, and one or more distributed power sources that supply power to these facilities A microgrid power monitoring measurement control program for causing a computer to execute power monitoring measurement control,
The computer receives the maximum and minimum measured values of the commercial grid point power and commercial interconnection point power flow for each instantaneous time period, and calculates the maximum power fluctuation value, Based on the procedure for selecting the larger maximum power fluctuation value compared to the maximum power fluctuation value in the time period and the maximum power fluctuation value larger than each other, the distributed power sources A microgrid power monitoring measurement control program for executing a procedure for performing a power generation plan for the next day and a procedure for performing operation control for the current day based on the power generation plan.   The procedure for performing the power generation plan for the next day of each of the distributed power sources and the procedure for performing the operation control on the same day include the prevention of reverse power flow of the distributed power generation power to the commercial grid point, and the commercial grid point in the microgrid. 38. The microgrid power monitoring measurement control program according to claim 37, wherein the condition is that the commercial power is not resold to the other power demand facility. The procedure for performing the power generation plan for the next day of each distributed power source is as follows:
For each instantaneous time period,
The maximum power generation plan value obtained by subtracting the larger maximum power fluctuation value of the commercial grid point power from the demand forecast value of the power of all the customer facilities,
Between the power generation forecast value of all electric power consumer equipment other than the customer equipment at the power receiving point of the microgrid, and the minimum power generation plan value obtained by adding the larger maximum power fluctuation value of the commercial interconnection point power In addition,
39. The microgrid power monitoring measurement control program according to claim 37 or 38, wherein a power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined. The procedure for performing the power generation plan for the next day of each distributed power source is as follows:
Even when the maximum power generation plan value and the minimum power generation plan value are reversed, the power generation plan value for the next day of the distributed power source in the instantaneous time zone is determined between them. 40. The microgrid power monitoring measurement control program according to claim 39. The procedure for performing the power generation plan for the next day of each distributed power source is as follows:
The power generation plan value for the next day of the distributed power source in the instantaneous time period between the maximum power fluctuation value of the commercial grid point power and the maximum power fluctuation value of the commercial interconnection point power flow, the customer facility of the microgrid power receiving point The predicted power demand value of all power customers except for the power demand forecast value at the microgrid power receiving point is calculated as [Maximum power fluctuation value of commercial grid connection point ÷ (Maximum power fluctuation value of commercial grid power flow + Commercial grid 41. The microgrid power monitoring and measurement control program according to claim 40, wherein a value obtained by multiplying the value obtained by multiplying the maximum point power fluctuation value)] is determined. Including a part for causing a computer to execute a procedure of selecting a value obtained by subtracting the generated power accumulated from the predicted value of the total power consumer equipment demand power by selecting the distributed power source in order from the lowest power generation cost, In this step, the comparison of the commercial interconnection point power flow to the predicted power demand value of all the power consumer equipment other than the microgrid power receiving point customer equipment is normally used for the distributed power source having a power generation cost lower than the commercial power cost. Then, exceeding the minimum power generation plan value including the larger maximum power fluctuation value, subtracting the comparatively larger maximum power fluctuation value of the commercial grid point power from the predicted power demand value of all power consumers. A value obtained by subtracting the generated power from the predicted value of the total power consumer equipment demand power by selecting and stacking in order from the lowest power generation cost until the generated power not exceeding the maximum planned power generation value. And commercial power,
If the minimum power generation plan value cannot be stacked only with a distributed power source having a power generation cost lower than that of commercial power, the power generation cost of the distributed power source higher than that of the commercial power is selected in order from the lowest power generation cost until the minimum power generation plan value is reached. , The value obtained by subtracting the generated power accumulated from the predicted power demand value of all power consumer equipment is commercial power,
When only the distributed power source with power generation cost cheaper than commercial power is more than the maximum power generation plan value, the stacking selection is performed until the maximum power generation plan value is just reached, and the power generation facility is estimated from the power demand forecast value for all power customers. 39. The microgrid power monitoring measurement control program according to claim 37, wherein a value obtained by subtracting the generated power is commercial power.   When the maximum power generation plan value and the minimum power generation plan value are reversed values, a value obtained by subtracting 1/2 of the transmittable capacity of the distributed power source that performs constant power reception control from the power generation plan value A portion for causing a computer to execute a procedure of stacking distributed power sources in ascending order of power generation cost and setting commercial power as a value obtained by subtracting the power generation planned value from the predicted power demand value of all power consumers The power monitoring measurement control program for a microgrid according to claim 40 or 41.   The procedure for selecting and stacking the distributed power sources up to a power supply amount that does not exceed the demand of the total power customer facility power is performed by predicting any failure of the distributed power sources. Item 44. The microgrid power monitoring measurement control program according to Item 42 or 43. An abnormality detection threshold is set for both the measured value of commercial grid point power and the measured value of commercial grid point power, and if any of these measured values exceeds the threshold, the measured value is calculated from the threshold. The value obtained by adding the maximum maximum power fluctuation value in the past at the same time instant time zone to the subtracted value is immediately calculated as the new maximum maximum power fluctuation value in the same time instant time zone and the corrected power generation plan is immediately calculated. 45. The microgrid power monitoring measurement control program according to any one of claims 37 to 44, further comprising: a part for causing a computer to execute a procedure for re-commanding the distributed power source.

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