JP2008199855A - Distribution system excessive facility check system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extract a facility which causes excessive capacity provided in a distribution system. <P>SOLUTION: This distribution system excessive facility check system has an input device 5 for inputting an allowable coefficient for passing allowable current and a voltage drop limit for extracting an open/close device which is an excessive facility, an outside output device 4 which displays and prints the extracted excessive facility, a passing current/supply voltage calculating unit 13 which is executed by a computer 3 receiving a load data group and a system data group from a distribution line automatic system 2, and calculates the passing current/supply voltage data for each zone of the distribution line, an excessive capacity judgment reference setting unit 16 which stores the allowable coefficient of the passing allowable current and voltage drop limit, an excessive capacity open/close extracting unit 18 which extracts the open/close device which is excessive capacity, and a result output unit 20 which outputs the extracted open/close device to the outside output device 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an excess equipment check system that extracts excess equipment in a power distribution system.

  Generally, an apparatus that supports facility planning in a distribution line automatic control system supports a distribution system enhancement plan due to an increase in power demand.

  For example, the voltage / current calculation is performed for the distribution system, the deviation equipment that deviates from the current overload or the appropriate voltage is detected, the violation rate of the deviation equipment is obtained, and the violation resolution priority set according to the violation rate is determined. It is disclosed that a support facility for voltage / current optimization is selected and a system that is an optimal solution that satisfies the objective function for voltage / current optimization is calculated for the support facility (for example, Patent Document 1). reference).

In addition, forecast future power demand based on load data of past and present power demand, compare future power demand with the available capacity of each facility in the distribution system, and It is disclosed to extract a factor and derive a countermeasure work plan that eliminates the factor for equipment that exceeds the supplyable capacity (see, for example, Patent Document 2).
JP 2004-129404 A JP 2001-112171 A

  However, in the method disclosed in the prior art document, it is difficult to grasp and use the equipment having an excessive capacity.

  In recent years, from the viewpoint of reducing power demand and restraining capital investment, it is important to grasp equipment with excessive capacity in the distribution line system and suppress capital investment.

  Then, the objective of this invention is providing the system which can extract the installation used as the excess capacity provided in the power distribution system.

  The distribution system excess equipment check system according to the aspect of the present invention is connected to be able to receive information on the distribution system from a distribution line automation system that monitors and controls the distribution system, and the excess of the equipment provided in the distribution system. A system for checking equipment, wherein system information acquisition means for acquiring system information about the distribution system from the distribution line automation system, and load information acquisition means for acquiring load information about the distribution system from the distribution line automation system; Based on the grid information acquired by the grid information acquisition means and the load information acquired by the load information acquisition means, a passing current value passing through the section is calculated for each section into which the distribution lines are divided. In order to determine current value calculation means and whether or not the equipment is excessive equipment based on the passing current of the equipment Passing current reference value input means for inputting a passing current reference value that is a reference value, and the passing current value calculated by the passing current value calculation means based on the passing current reference value input by the passing current reference value input means If the current value is within the allowable range of the equipment provided on the distribution line, and the equipment allowable judgment means and the judgment result of the equipment tolerance judgment means allow, the passing current reference value input means The passing current value calculated by the passing current value calculating means based on the passing current reference value input by the within the range allowed by the equipment having a capacity smaller than the equipment determined by the equipment permission judging means If the determination result of the equipment allowable redetermining means and the equipment allowable redetermining means allow, the equipment determined by the equipment allowable determining means is overinstalled. A configuration in which a overcapacity detection means for detecting as.

  ADVANTAGE OF THE INVENTION According to this invention, the system which can extract the installation used as the excess capacity provided in the power distribution system can be provided.

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

(First embodiment)
FIG. 1 is a block diagram showing a configuration of a distribution system excess facility check system 1 according to the first embodiment of the present invention. In the following, the same parts are denoted by the same reference numerals, detailed description thereof is omitted, and different parts are mainly described. In the following embodiments, the same description is omitted.

  The distribution system excess facility check system 1 is connected to the distribution line automation system 2 through a communication path that can receive information.

  The distribution line automation system 2 includes a distribution line automatic control system, a distribution line monitoring control system, and the like, and is a system for monitoring and controlling distribution lines and switches constituting the distribution system.

  The power distribution system excess check system 1 includes a computer such as a workstation having a computer main body (hereinafter referred to as a computer) 3, an external output device 4, and an input device 5 having a calculation unit, a control unit, and a storage unit.

  Then, the computer 3 calculates the passing current / supply voltage required for the distribution system excess check system 1 using the set value input from the input device 4, various data received from the distribution line automation system 2, and software installed in advance. The unit 13, the excess capacity determination criterion setting unit 16, and the excess capacity switch extraction unit 18 are executed, and the calculation results are output to the external output device 4 via the result output unit 20.

  The computer may use a personal computer (personal computer) instead of the workstation. In the following embodiments, all computers have the same configuration and the same operation.

  The external output device 4 is a device for outputting the processing contents or processing results in the computer 3 to the outside by displaying or printing, and is, for example, a monitor or a printer.

  The input device 5 is a device for inputting information necessary for processing in the distribution system excess facility check system 1, and is, for example, a display for input, a keyboard, or a mouse.

  FIG. 2 is a data flow diagram of processing by the distribution system excess facility check system 1 according to the first embodiment.

  In FIG. 2, a load data group DT11 is a collection of data (information) related to the load of the distribution system. For example, a distribution line current supplied to a distribution line in the distribution system and a sending voltage supplied to the distribution line. Information is included.

  The system data group DT12 is a collection of data (information) related to the system of the distribution system. For example, information such as the impedance between the switches provided in the distribution system, the standard section load for each section, the allowable value of the switch equipment, etc. It is included. The allowable value of the switch equipment is, for example, a passing current allowed by the power supply side switch (switching allowable current).

  The passage current / supply voltage calculation unit 13 generates passage current / voltage data DT14 including information such as passage current or supply voltage for each section in the distribution system. Specifically, the passing current / supply voltage calculation unit 13 functions as follows. The passing current / supply voltage calculation unit 13 acquires the load data group DT11 and the system data group DT12 from the distribution line automation system 2. That is, the passing current / supply voltage calculation unit 13 has a function as system information acquisition means. And this passage current / supply voltage calculation part 13 distributes the distribution line current contained in load data group D11 using the standard section load of each section contained in system data group DT12, and thereby the power supply side switch Calculate the passing current. Further, the section supply voltage is calculated using the impedance between the switches included in the system data group 12 and the power source side switch passing current. These calculated passing current and supply voltage are passing current / supply voltage data DT14 in the figure.

  The passage current / supply voltage data DT14 is information configured as section information 1 to m for each section as shown in FIG. The information 1 to m for each section includes the equipment serial number of the power supply side switch, the passing current of the power supply side switch (hereinafter referred to as “power supply side switch passing current”), and the voltage supplied to the section (hereinafter, “ "Section supply voltage") is included. Here, the equipment serial number of the power supply side switch is a serial number assigned to the switch provided in the power distribution system.

  The excess capacity determination reference setting unit 16 is set with an excess capacity determination reference value DT17 which is a reference for determining the facilities provided in the distribution system as excess capacity. The excess capacity determination reference setting unit 16 sets the excess capacity determination reference value DT17 based on the data input from the input device 5.

  This excess capacity determination reference value DT17 is information serving as a reference for determining whether or not the equipment provided in the distribution system has an excess capacity, and as shown in FIG. And a voltage drop limit (V). The permissible coefficient of the permissible passage current is a coefficient by which the permissible passage current of the switch can be obtained by multiplying the permissible current of the switch. The voltage drop limit is a value indicating a limit of an allowable voltage drop amount.

  The excess capacity switch extraction unit 18 determines whether or not the facility (switch) in the distribution system has an excess capacity, and creates excess capacity facility data DT19 that is information about the facility (switch) determined to be an excess capacity. Specifically, the excess capacity switch extractor 18 obtains the excess capacity facility data DT19 based on the passing current / supply voltage data DT14, the excess capacity determination reference value DT17, and the allowable value of the switch facility of the system data group DT12. create. That is, the excess capacity switch extractor 18 has functions as an equipment allowance determining means and an excess equipment detecting means. Further, the excess capacity switch extractor 18 has a function as an equipment allowable re-determination means for detecting again whether the equipment is within the allowable range in order to detect the excess equipment as will be described later.

  As shown in FIG. 5, the excess capacity equipment data DT19 is information relating to the excess capacity equipment. Information of each power supply side switch of excess capacity extracted by the excess capacity switch extraction unit 18 is stored in excess capacity facility information 1 to n. Each excess capacity equipment information 1 to n includes equipment type * 1, equipment serial number * 2, and determination reference map * 3. The facility type * 1 represents the type of facility. The equipment type indicates a switch when “1”, a span when “2”, and an automatic voltage regulator (SVR) when “3”. Here, the SVR is a kind of device that compensates the voltage of the distribution line. In the present embodiment, the equipment type is “1” indicating a switch. The equipment serial number is a serial number for each equipment type. In the present embodiment, the equipment serial number is a serial number of the switch. The determination reference map represents a reference determined as excess capacity. When the first bit indicates the first bit, it is excessive due to the passage current determination (determination based on the allowable coefficient of the allowable passage current). When the second bit indicates it is excessive due to the voltage drop determination (determination based on the voltage drop limit) ) Respectively. In the present embodiment, the determination reference map indicates the first bit.

  The result output unit 20 performs processing for outputting the calculation result in the computer 3 to the external output device 4. Specifically, the result output unit 20 is information based on the passing current / supply voltage data DT14 calculated by the passing current / supply voltage calculation unit 13 and the excess capacity facility data DT19 created by the excess capacity switch extraction unit 18. Is output (displayed on the screen or printed).

  FIG. 6 is an image diagram showing a screen format H1 for displaying the passing current / supply voltage data DT14. The passing current / supply voltage data DT14 can be displayed as section information for each distribution line. FIG. 7 is an image diagram showing a screen format H2 for displaying excess capacity facility data. In the excess capacity equipment data DT19 of FIG. 2, the data of the display part PR1 shown in FIG. 7 is displayed. The screen formats H1 (FIG. 6) and H2 (FIG. 7) are configured so that they can be displayed in the same manner in other embodiments or embodiments in which these are combined.

  Next, a calculation method of the passing current / supply voltage data DT14 in the passing current / supply voltage calculation unit 13 according to this embodiment will be described with reference to FIG.

  The distribution line LN1 connected to the feeder circuit breaker (FCB) of the substation is divided into five sections K1 to K5 by four switches S1 to S4, and the sections K1, K2, and K3 are sequentially arranged from the power source side. , K4, K5. The distribution line LN1 is supplied with a voltage 6600 [V] (sending voltage) and a current 100 [A] (distribution line current) from a substation bus on the power source side. Since a normal load is not connected to the section between the feeder circuit breaker FCB and the first switch S1, the standard section load in the section K1 is 0 [kW]. The standard section load of each section K2 to K5 is 10 [kW]. The impedance value between the switches in each section K1 to K5 is 0.5 [Ω].

  The passage current / supply voltage calculation unit 13 calculates the passage current / supply voltage data DT14 using the following equations (1) to (3).

Power supply side switch passing current = Σ (interval load in each section on the load side from the power supply side switch) = inflow current-section load in the power supply side section (1)
Section load = distribution line current × standard section load of section to be obtained / Σ (standard section load of each section) (2)
Voltage drop amount in the desired section = (Inflow current + Outflow current) / 2 x Impedance value between the switches in the required section ... Formula (3)
Next, a specific calculation method of the passage current / supply voltage data DT14 by the passage current / supply voltage calculation unit 13 will be described.

  The section load of each section K1-K5 is calculated | required. Here, since the standard section load of the section K1 is 0 [kW], the section load of the section K1 calculates 0 [A]. From equation (2), section load of section K2 = distribution line current × standard section load of section K2 / Σ (standard section load of sections K1 to K5) = 100 [A] × 10 [Ω] / 40 [Ω] = 25 [A] is calculated. Similarly, section load = 25 [A] of each section K3 to K5 is calculated.

  The passing current of each power supply side switch S1-S4 is calculated | required. From formula (1), the passing current of the power supply side switch S1 = Σ (the section loads of the sections K2 to K5 on the load side from the power supply side switch S1) = 25 [A] × 4 = 100 [A] is calculated. . Passing current of power switch S2 = inflow current (passing current of power switch S1) −section load of section K2 = 100 [A] −25 [A] = 75 [A] is calculated. Similarly, 50 [A] and 25 [A] are calculated as the passing currents of the power supply side switches S3 and S4. That is, the passing currents of the power supply side switches S1 to S4 can be estimated as passing currents passing through the corresponding sections K2 to K5 of the power supply side switches S1 to S4.

  The supply voltage of each section K1-K5 is calculated | required.

  First, the supply voltage in the section K1 is obtained. From equation (3), voltage drop amount in section K1 = (distribution line current + passing current in power supply side switch S1) / 2 × impedance value between switches in section K1 = (100 [A] +100 [A]) /2×0.5 [Ω] = 50 [V] is calculated. Therefore, supply voltage in section K1 = sending voltage−voltage drop amount in section K1 = 6600 [V] −50 [V] = 6550 [V] is calculated.

  Next, the supply voltage of the section K2 is obtained. From equation (3), voltage drop amount in section K2 = (passing current of power supply side switch S1 + passing current of power supply side switch S2) / 2 × impedance value between switches in section K2 = (100 [A] +75 [A]) / 2 × 0.5 [Ω] ≈44 [V] is calculated. Therefore, the supply voltage of the section K2 = the supply voltage of the section K1−the voltage drop amount of the section K2 = 6550 [V] −44 [V] = 6506 [V] is calculated.

  Similarly, the supply voltages of the sections K3, K4, and K5 are calculated as 6475 [V], 6456 [V], and 6450 [V], respectively.

  In this way, the passing current / supply voltage calculation unit 13 calculates the passing current of the power supply side switches S1 to S4 in each section and the supply voltage in each section K1 to K5 in the passing current / supply voltage data DT14.

  Next, a method for extracting excess capacity equipment (switch) in the excess capacity switch extraction unit 18 will be described.

  The excess capacity switch extraction unit 18 uses the allowable coefficient of the permissible passage current included in the excess capacity determination reference value DT17 to determine whether the power supply side switch is an excess facility for each switch section included in the system data group DT12. Determine whether or not. The excess capacity switch extraction unit 18 calculates a value obtained by multiplying the switch allowable passage current included in the system data group DT12 by the allowable coefficient of the allowable passage current. The excess capacity switch extractor 18 further compares the power supply side switch passing current of each section included in the passing current / supply voltage data DT14 with the value obtained by multiplying the switch passing allowable current by the allowable coefficient of the passing allowable current. To do. That is, the excess capacity switch extractor 18 determines whether the mounted switch is within an allowable range.

  As a result of the comparison, the excess capacity switch extractor 18 determines that the switch passing allowable current multiplied by the allowable coefficient of the allowable passing current is larger than the power supply switch passing current. The same calculation and comparison are performed again using the allowable switch passage current. That is, the excess capacity switch extractor 18 determines again whether or not a switch having a capacity one size smaller than the mounted switch is within the allowable range.

  As a result of the comparison again, if the recalculated switch passage allowable current is larger than the power supply side switch passage current, the excess capacity switch extraction unit 18 uses the power supply side switch in the section as the excess capacity equipment and the excess capacity equipment. Register in the data DT19. The excess capacity switch extractor 18 detects an excess capacity switch by registering it in the excess capacity equipment data DT19.

  In this way, the excess capacity switch extractor 18 extracts excess capacity equipment from the power supply side switches in each section, and creates excess capacity equipment data DT19.

  According to this embodiment, the value which estimates each of the power supply side switch passing current and the section supply voltage for every section in an arbitrary system state can be automatically calculated. Therefore, the operator reduces the work load such as monitoring and control of the power distribution system by operating based on the estimated values of the power supply side switch passing current and the section supply voltage for each section in any system. be able to.

  Further, in an arbitrary system state, it is possible to extract an excess capacity facility (switch) that is a facility having a surplus capacity with respect to an allowable value of the facility (switch). Therefore, by grasping the excess capacity equipment (switches), it is possible to avoid over-investment of equipment and support effective use of existing equipment.

  Furthermore, as shown in the screen format H1, the data obtained by the distribution system excess facility check system 1 is displayed side by side for each distribution line, section, etc., so that the operator can easily grasp the state of the distribution system. be able to. Further, as shown in the screen format H2, the data obtained by the distribution system excess facility check system 1 is associated with the facility extracted as excess capacity and the type of the facility, and is output for each distribution line. It is possible to easily grasp a list of excess facilities of the distribution system and data of the excess facilities. Moreover, the screen format H2 can be similarly displayed in combination with equipment other than the switch described as excess equipment in other embodiments.

(Second Embodiment)
FIG. 9 is a block diagram showing a configuration of a distribution system excess facility check system 1A according to the second embodiment.

  The distribution system excess facility check system 1A is the same except that the computer 3 is replaced with the computer 3A in the distribution system excess facility check system 1 shown in FIG. The computer 3A is obtained by adding a switch optimum capacity calculation unit 30 to the computer 3 shown in FIG.

  FIG. 10 is a data flow diagram of processing by the distribution system excess facility check system 1A according to the second embodiment.

  The switch optimum capacity calculation unit 30 calculates the optimum capacity of the switch extracted as excess capacity equipment in the distribution system, and creates the optimum capacity data DT31 for each equipment. The passing current / supply voltage data DT14, excess Based on the capacity determination reference value DT17, the switch passing allowable current included in the system data group DT12, and the excess capacity equipment data DT19, the optimum capacity data DT31 for each equipment is created. The optimal switch capacity calculation unit 30 determines the optimal capacity of the switches registered in the excess capacity equipment data DT19 among the mounted switches included in the system data group DT12.

  As shown in FIG. 11, the optimum capacity data for each facility DT31 is information of a configuration divided into pieces of optimum capacity information 1 to n. Each optimum capacity information 1 to n includes items of equipment type * 1, equipment serial number * 2, and optimum capacity * 3. The equipment type * 1 represents the kind of equipment. When it is “1”, it indicates a switch, when it is “2”, it indicates a span, and when it is “3”, it indicates SVR. In the present embodiment, the equipment type is “1” indicating a switch. The equipment serial number is a serial number for each equipment type, and is a serial number of the switch in this embodiment. The optimum capacity is the optimum capacity for each equipment type, and is the capacity of the switch in this embodiment.

  The optimal switch capacity calculation unit 30 determines the excess capacity based on the power-source-side switch passing current included in the passing current / supply voltage data DT14 and the switch passing allowable current of a switch having a size smaller than the switch. A value obtained by multiplying the allowable coefficient of the allowable passing current included in the value DT17 is compared.

  As a result of the comparison, when the allowable switch passage current multiplied by the allowable coefficient of the allowable passage current is larger than the current passing through the power supply side switch, the optimum switch capacity calculation unit 30 further opens and closes a capacitor that is one size smaller than the switch. The value obtained by multiplying the permissible current of the switch by the permissible coefficient of the permissible current of the switch is compared.

  The switch optimal capacity calculation unit 30 repeats these processes by reducing the size of the switch by one size until the power-source-side switch passing current exceeds the switch-passing allowable current, and the power-side switch passing current is switched. The minimum capacity that does not exceed the allowable current passing through the switch is registered in the optimal capacity data DT31 for each facility as the optimal capacity of the switch.

  In this way, the switch optimal capacity calculation unit 30 determines the optimal capacities of all switches registered in the excess capacity facility data DT19 among the mounted switches included in the system data group DT12.

  The result output unit 20 includes the passing current / supply voltage data DT14 created by the passing current / supply voltage calculation unit 13, the excess capacity facility data DT19 created by the excess capacity switch extraction unit 18, and the switch optimum capacity calculation unit. The information on the result based on the optimum capacity data DT31 for each facility created by 30 is output to the external output device 4.

  FIG. 12 is an image diagram showing a screen format H3 for displaying the excess capacity equipment data DT19 and the optimum capacity data for each equipment DT31. The optimum capacity data for each facility DT31 is displayed as data on the display part PR2, in particular. The screen format H3 is configured so that it can be displayed in the same manner in other embodiments or embodiments in which these are combined.

  According to this embodiment, in addition to the effect by 1st Embodiment, the switch optimal capacity | capacitance in arbitrary system states can be extracted. Therefore, by grasping the optimum switch capacity of the excess capacity facility (switch), it is possible to more appropriately support avoidance of excessive investment of the facility and effective use of the existing facility.

  Further, as in the screen format H3, the data obtained by the distribution system excess equipment check system 1 is associated with the equipment extracted as excess capacity, the type of equipment, and the optimum capacity, and output for each distribution line. Accordingly, it is possible to easily grasp a list of excess facilities of the power distribution system and data of the excess facilities by an operator or the like. Moreover, the screen format H3 can be similarly displayed in combination with equipment other than the switch described as excess equipment in other embodiments.

(Third embodiment)
FIG. 13: is a block diagram which shows the structure of the distribution system excessive equipment check system 1B which concerns on 3rd Embodiment.

  The distribution system excess facility check system 1B is the same as the distribution system excess facility check system 1 shown in FIG. 1 except that the computer 3 is replaced with a computer 3B. The computer 3B is the same except that the excess capacity switch extraction unit 18 of the computer 3 shown in FIG.

  FIG. 14 is a data flow diagram of processing by the distribution system excess facility check system 1B according to the third embodiment.

  The system data group DT12 includes information related to the allowable value of the spanning facility and the like. The allowable value of the span installation is, for example, the span passage allowable current of the span group.

  The excess capacity span extraction unit 40 determines whether or not the facility (span facility) in the distribution system has an excess capacity, and creates excess capacity facility data DT19A, which is information related to the facility (span facility) determined to be excess capacity. To do. That is, the excess capacity span extraction unit 40 has functions as an equipment allowance determination unit and an excess equipment detection unit. In addition, the excess capacity span extraction unit 40 has a function as an equipment allowable re-determination unit in order to detect again whether the equipment is within the allowable range in order to detect the excess equipment as will be described later.

  The excess capacity span extraction unit 40 creates excess capacity facility data DT19A based on the passing current / supply voltage data DT14, the excess capacity determination reference value DT17, and the permissible span facilities included in the system data group DT12. As shown in FIG. 5, the excess capacity equipment data DT19A is information in the same format as the excess capacity equipment data DT19. In the present embodiment, the equipment type is “2” indicating the span, and the equipment serial number is the serial number of the span equipment. The determination reference map indicates the second bit indicating excess due to the voltage drop determination.

  The result output unit 20 outputs information based on the passage current / supply voltage data DT14 created by the passage current / supply voltage calculation unit 13 and the excess capacity facility data DT19A created by the excess capacity span extraction unit 40. Output to. The excess capacity equipment data DT19A is displayed as data on the display part PR3 of the screen format H2 shown in FIG.

  A method for extracting excess capacity equipment (span equipment) in the excess capacity span extraction unit 40 will be described.

  The excess capacity span extraction unit 40 takes one route from the power supply side switch to the load side switch for each section implemented in the system data group DT12, and disassembles the system for each route to each load side switch. These routes are overlapped, and overlapping span groups are defined as one block. The excess capacity span extracting unit 40 calculates the passing current of each block in each section based on the power source side switch passing current of the passing current / supply voltage data DT14.

  With reference to FIG. 15, the method for extracting excess capacity equipment (span equipment) in the excess capacity span extraction unit 40 will be described.

  The section of the distribution system shown in FIG. 15 includes a power supply side switch S11, load side switches S12 to S14, and utility poles D1 to D17.

  The excess capacity span extraction unit 40 divides this distribution system into a route RT1 from the power supply side switch S11 to the load side switch S12, a route RT2 from the power supply side switch S11 to the load side switch S13, and the power supply side. It breaks down into three routes, the route RT3 from the switch S11 to the load side switch S14.

  The excess capacity span extraction unit 40 superimposes the routes RT1 to RT3, considers the overlapping span group as one block, and decomposes it into five blocks BR1 to BR5. As illustrated in FIG. 16, the excess capacity span extracting unit 40 generates intermediate data DT19A1 indicating the range of each of the blocks BR1 to BR5. The block BR1 is a span surrounded by the utility pole D1 and the utility pole D2. The block BR2 is a span surrounded by the utility pole D2 and the utility pole D7. The block BR3 is a span surrounded by the utility pole D2 and the utility pole D10. The block BR4 is a span surrounded by the utility pole D10 and the utility pole D13. The block BR5 is a span surrounded by the utility pole D10 and the utility pole D17.

  The excess capacity span extracting unit 40 assumes that the load is uniformly distributed to the utility poles in the section for the passing current of each block. The excess capacity span extraction unit 40 calculates the power poles on the load side including the most power-side power poles of the blocks BR1 to BR5 from the load amount per power pole obtained by dividing the current passing through the power source side switch by the number of power poles in the section. Calculate based on the number.

  Here, when the power supply side switch passage current in the section is 14A, how to obtain the passage current of each of the blocks BR1 to BR5 will be described. The number of load side utility poles (including the most power source side utility poles) of each of the blocks BR1 to BR5 is as follows, as in the intermediate data DT19A2 shown in FIG. The block BR1 has a total of 14 blocks of D1, D2, D3, D4, D5, D6, D8, D9, D10, D11, D12, D14, D15, and D16. The block BR2 has a total of five blocks D2, D3, D4, D5, and D6. The block BR3 has a total of nine blocks D2, D8, D9, D10, D11, D12, D14, D15, and D16. The block BR4 has a total of three blocks D10, D11, and D12. The block BR5 has a total of four blocks D10, D14, D15, and D16. Moreover, since the number of utility poles in a section is the same as that of the block BR1, it is 14. Therefore, the load amount per power pole is as follows: load amount per power pole = power source side switch passing current / number of power poles within the section = 14 A / 14 = 1 A / line. The passing current of the block BR1 is the load amount per power pole × the number of load-side power poles of the block BR1 = 1A / 14 × 14 = 14A. Similarly, the passing currents of the other blocks BR2 to BR5 are obtained as follows. The passing current of the block BR2 is 5A. The passing current of the block BR3 is 9A. The passing current of the block BR4 is 3A. The passing current of the block BR5 is 4A.

  The excess capacity span extraction unit 40 compares the passage current of each of the blocks BR1 to BR5 with the span passage allowable current of each block inner diameter group, which is the allowable value of the span installation included in the system data group DT12. That is, the excess capacity span extraction unit 40 determines whether or not the span span installed is within an allowable range.

  As a result of the comparison, the excess capacity span extracting unit 40, when the span passage allowable current exceeds the block passage current, the span passage permissible current having a capacity one size smaller than the wire size between the span and the block passage. Compare the currents again. That is, it is determined again whether or not the excess capacity span extraction unit 40 and the span installation having a capacity one size smaller than the installed span installation are within the allowable range.

  As a result of the comparison again, the excess capacity span extraction unit 40 registers the span as excess capacity equipment in the excess capacity equipment data DT19A when the span passage allowable current exceeds the block passage current. The excess capacity span extraction unit 40 detects excess capacity span facilities by registering in the excess capacity facility data DT19A.

  When the span is extracted as excess capacity, the excess capacity span extraction unit 40 has a drop value obtained by subtracting the supply voltage of each section from the send voltage for the section and the load side section of the section, It is determined whether or not the voltage drop limit of the excess capacity determination reference value DT17 is exceeded. When the excess capacity span extraction unit 40 does not exceed the voltage drop limit of the excess capacity determination reference value DT17 as a result of the determination, the distribution line to which the section belongs with the capacity of the wire between the spans being one size smaller. The section supply voltage is calculated. The excess capacity span extraction unit 40 determines whether or not the drop value obtained by subtracting the supply voltage of each section from the send voltage for all the recalculated sections exceeds the voltage drop limit of the excess capacity determination reference value DT17. Determine. When the excess capacity span extraction unit 40 does not exceed the voltage drop limit of the excess capacity determination reference value DT17 as a result of this determination, the excess capacity span extraction unit 40 registers the span as the excess capacity facility in the excess capacity facility data DT19A.

  According to this embodiment, the value which estimates each of the power supply side switch passing current and the section supply voltage for every section in an arbitrary system state can be automatically calculated. Therefore, the operator reduces the work load such as monitoring and control of the power distribution system by operating based on the estimated values of the power supply side switch passing current and the section supply voltage for each section in any system. be able to. Moreover, in an arbitrary system state, it is possible to extract an excess capacity facility (span facility) that is a facility having a surplus with respect to an allowable value of the facility (span facility). Therefore, by grasping the excess capacity equipment (spanning equipment), it is possible to support over-investment of equipment and effective use of existing equipment.

(Fourth embodiment)
FIG. 18 is a block diagram illustrating a configuration of a distribution system excess facility check system 1C according to the fourth embodiment.

  The distribution system excess facility check system 1C is the same except that the computer 3B is replaced with the computer 3C in the distribution system excess facility check system 1B shown in FIG. The computer 3C is obtained by adding a span optimal capacity calculation unit 41 to the computer 3B shown in FIG.

  FIG. 19 is a data flow diagram of processing in the distribution system excess facility check system 1C according to the third embodiment.

  The span optimum capacity calculation unit 41 calculates the optimum capacity of the span equipment extracted as the excess capacity equipment in the distribution system, and creates the optimum capacity data DT31A for each equipment.

  The span optimum capacity calculation unit 41 includes the passage current / supply voltage data DT14, the voltage drop limit included in the excess capacity determination reference value DT17, the span passage allowable current of the span group included in the system data group DT12, and the excess capacity. Based on the equipment data DT19A, the optimum capacity data DT31A for each equipment is created.

  The span optimal capacity calculation unit 41 calculates the passing current of each block for each section to be mounted in the system data group. The method of obtaining the passing current of each block is the same as the method of obtaining the passing current of each block in the excess capacity span extracting unit 40 described in the third embodiment. Note that the optimum span capacity calculation unit 41 may use the passing current of each block obtained by the excess capacity span extraction unit 40.

  The inter-diameter optimum capacity calculation unit 41 compares the inter-diameter permissible current having a capacity smaller by one size than the wire size between the inner diameters of the blocks and the passage current of the blocks. As a result of the comparison, when the span passage allowable current exceeds the block passage current, the span optimum capacity calculation unit 41 subtracts the supply voltage of each section from the send voltage for the section and the section. Calculate the drop value. The span optimal capacity calculation unit 41 determines whether or not the drop value exceeds the voltage drop limit included in the excess capacity determination reference value DT17. If the voltage drop limit is not exceeded as a result of the determination, the optimum span diameter capacity calculation unit 41 compares the span passage allowable current and the block passage current with a capacity that is one size smaller than the wire size. The span optimal capacity calculation unit 41 has a drop value obtained by subtracting the supply voltage of each section from the send voltage with respect to the load side section of the section where the block passage current exceeds the span passage allowable current. Until the voltage drop limit is exceeded in any section, the capacity (electric wire size) of the span equipment is reduced by one size and these processes are repeated.

  Thereby, the optimum span calculation capacity calculation unit 41 does not exceed the span passage allowable current, and subtracts the supply voltage of each section from the send voltage for the load side section of the section. The minimum capacity where the drop value does not exceed the voltage drop limit is determined as the optimum span capacity. The span optimal capacity calculation unit 41 registers the span optimal capacity in the optimal capacity data DT31A for each facility.

  In this way, the optimum span capacity calculation unit 41 determines the optimum capacity of all span facilities registered in the excess capacity equipment data DT19A among the mounted span equipment included in the system data group DT12.

  The result output unit 20 includes the passage current / supply voltage data DT14 created by the passage current / supply voltage calculation unit 13, the excess capacity facility data DT19A created by the excess capacity span extraction unit 40, and the span optimal capacity calculation unit. Information based on the optimum capacity data for each facility DT31A created by 41 is output to the external output device 4. The optimal capacity data DT31A for each facility is displayed as data of the display part PR4 of the screen format H3 shown in FIG.

  According to this embodiment, in addition to the effect by 3rd Embodiment, the span optimal capacity | capacitance in arbitrary system states can be extracted. Therefore, by grasping the optimum capacity of the excessive capacity facility (span facility), it is possible to more appropriately support avoidance of excessive investment of the facility and effective use of the existing facility.

(Fifth embodiment)
FIG. 20 is a block diagram illustrating a configuration of a distribution system excess facility check system 1D according to the fifth embodiment.

  The distribution system excess facility check system 1D is the same as the distribution system excess facility check system 1 shown in FIG. 1 except that the computer 3 is replaced with a computer 3D. The computer 3D is the same except that the excess capacity switch extractor 18 of the computer 3 shown in FIG. 1 is replaced with an excess capacity SVR extractor 50.

  FIG. 21 is a data flow diagram of processing by the distribution system excess facility check system 1D according to the fifth embodiment.

  The system data group DT12 includes information related to the allowable value of SVR. The allowable value of SVR is, for example, the allowable current of passing through SVR.

  The excess capacity SVR extraction unit 50 determines whether or not the equipment (SVR) in the power distribution system has an excess capacity, and creates excess capacity equipment data DT19B, which is information related to the equipment (SVR) determined to be an excess capacity. That is, the excess capacity SVR extraction unit 50 has functions as an equipment allowable determination means and an excess equipment detection means. Further, the excess capacity SVR extraction unit 50 has a function as an equipment allowable re-determination unit in order to detect again whether the equipment is within the allowable range in order to detect the excess equipment as will be described later.

  The excess capacity SVR extraction unit 50 creates excess capacity equipment data DT19B based on the passing current / supply voltage data DT14, the excess capacity determination reference value DT17, and the allowable value of the SVR equipment included in the system data group DT12. As shown in FIG. 5, the excess capacity equipment data DT19B is information in the same format as the excess capacity equipment data DT19. In the present embodiment, the equipment type is “3” indicating SVR, and the equipment serial number is an SVR serial number. The determination reference map indicates the first bit representing excess due to the passage current determination.

  The result output unit 20 outputs information based on the passage current / supply voltage data DT14 created by the passage current / supply voltage calculation unit 13 and the excess capacity facility data DT19B created by the excess capacity SVR extraction unit 50 to the external output device 4. Output to. As the excess capacity equipment data DT19B, data of the display part PR5 of the screen format H2 shown in FIG. 7 is displayed.

  A method for extracting excess capacity equipment (SVR) in the excess capacity SVR extraction unit 50 will be described.

  The excess capacity SVR extraction unit 50 determines whether or not the SVR is an excess facility for each SVR mounting section included in the system data group DT12. The excess capacity SVR extraction unit 50 adds the excess capacity determination reference value DT17 to the power supply side switch passage current of each section included in the passage current / supply voltage data DT14 and the allowable current of SVR of each section included in the system data group DT12. A value obtained by multiplying a permissible coefficient of the permissible passage current is compared. Here, the power supply side switch passing current is estimated to be a current passing through the SVR. That is, the excess capacity SVR extraction unit 50 determines whether or not the mounted SVR is within an allowable range.

  As a result of comparison, if the allowable SVR passage current is larger than the power supply side switch passage current, the excess capacity SVR extraction unit 50 is smaller by one size than the power supply side switch passage current of the passage current / supply voltage data DT14 and the SVR. The SVR allowable passage current calculated based on the allowable coefficient of the allowable passage capacity of the SVR and the allowable capacity determination reference value DT17 is compared again. That is, the excess capacity SVR extraction unit 50 determines again whether or not the SVR having a capacity one size smaller than the mounted SVR is within the allowable range.

  When the SVR passage allowable current is larger than the power supply side switch passage current as a result of comparison again, the excess capacity SVR extraction unit 50 registers the SVR as excess capacity equipment in the excess capacity equipment data DT19B. The excess capacity SVR extraction unit 50 detects an excess capacity switch by registering it in the excess capacity equipment data DT19B.

  According to this embodiment, the value which estimates each of the power supply side switch passing current and the section supply voltage for every section in an arbitrary system state can be automatically calculated. Therefore, the operator reduces the work load such as monitoring and control of the power distribution system by operating based on the estimated values of the power supply side switch passing current and the section supply voltage for each section in any system. be able to. Further, in an arbitrary system state, it is possible to extract an excess capacity facility (SVR) that is a facility having a surplus with respect to an allowable value of the facility (SVR). Therefore, by grasping the excess capacity facility (SVR), it is possible to support the avoidance of excessive investment of the facility and the effective use of the existing facility.

(Sixth embodiment)
FIG. 22 is a block diagram illustrating a configuration of a distribution system excess facility check system 1E according to the sixth embodiment.

  The distribution system excess facility check system 1E is the same except that the computer 3D is replaced with the computer 3E in the distribution system excess facility check system 1D shown in FIG. The computer 3E is obtained by adding an SVR optimum capacity calculation unit 51 to the computer 3D shown in FIG.

  FIG. 23 is a data flow diagram of processing in the distribution system excess facility check system 1E according to the sixth embodiment.

  The SVR optimum capacity calculation unit 51 calculates the optimum capacity of the SVR extracted as excess capacity equipment in the distribution system, and creates optimum capacity data for each equipment DT31B.

  The SVR optimum capacity calculation unit 51 includes the power-side switch passing current included in the passing current / supply voltage data DT14, the allowable coefficient of the allowable passing current included in the excess capacity determination reference value DT17, and the SVR included in the system data group DT12. Based on the allowable passage current and the excess capacity equipment data DT19B, the optimum capacity data DT31B for each equipment is created.

  The SVR optimum capacity calculation unit 51, for each SVR mounting section included in the system data group DT12, passes the power switch side current of the passing current / supply voltage data DT14 and the allowable passing current of the SVR having a size smaller than the SVR. Are compared with a value obtained by multiplying the excess capacity determination reference value DT17 by a permissible coefficient of a permissible passage current.

  When the SVR allowable passage current is larger than the power supply side switch passage current as a result of the comparison, the SVR optimum capacity calculating unit 51 multiplies the allowable allowable current of the allowable passage current by the allowable passage current of the SVR having a capacity smaller by one size. Compare with

  The SVR optimum capacity calculation unit 51 repeats these processes while reducing the SVR by one size each time until the power supply side switch passage current exceeds the SVR passage allowable current, and the power supply side switch passage current becomes the SVR passage allowable current. Is registered in the optimum capacity data DT31 for each facility as the SVR optimum capacity.

  In this way, the SVR optimum capacity calculation unit 51 determines the optimum capacity of all the SVRs registered in the excess capacity equipment data DT19B among the mounted SVRs included in the system data group DT12.

  The result output unit 20 is created by the passage current / supply voltage data DT14 created by the passage current / supply voltage calculation unit 13, the excess capacity facility data DT19B created by the excess capacity SVR extraction unit 50, and the SVR optimum capacity calculation unit 51. Information based on the optimal capacity data for each facility DT31B is output to the external output device 4. The optimum capacity data for each facility DT31B is displayed as data of the display part PR6 of the screen format H3 shown in FIG.

  According to the present embodiment, the SVR optimum capacity in any system state can be extracted in addition to the operational effects of the fifth embodiment. Therefore, by grasping the optimum capacity of the excess capacity facility (SVR), it is possible to more appropriately support avoidance of excessive investment of the facility and effective use of the existing facility.

(Seventh embodiment)
FIG. 24 is a block diagram illustrating a configuration of a distribution system excess facility check system 1F according to the seventh embodiment.

  The distribution system excess facility check system 1F is the same except that the computer 3E is replaced with the computer 3F in the distribution system excess facility check system 1E shown in FIG. In the computer 3E shown in FIG. 22, the computer 3F uses the SVR optimum for the excess capacity determination criterion setting unit 16 as the excess capacity determination criterion setting unit 16A, the passing current / supply voltage calculation unit 13 as the passing current / supply voltage calculation unit 13A. The capacity calculation unit 51 is replaced with the SVR optimum capacity calculation unit 51A, and an SVR optimum position calculation unit 60 and a transient system data creation unit 62 are added.

  FIG. 25 is a data flow diagram of processing by the distribution system excess facility check system 1F according to the seventh embodiment.

  The excess capacity determination reference setting unit 16A is set with an excess capacity determination reference value DT17A which is a reference for determining the excess capacity of the distribution system facility by the input device 5. As shown in FIG. 26, the excess capacity determination reference value DT17A is similar to the excess capacity determination reference value DT17 shown in FIG. 4, and the SVR number determination value (unit), the SVR passing current upper limit value (A) corresponding to the SVR capacity, and This is a setting value in which the voltage drop excess amount (V) for each of the required SVR units from 1 to 3 is added.

  The reference value DT17A1, which is a part of the excess capacity determination reference value DT17A, includes the voltage drop excess amount (V) for each required number of SVR units from one to three units. As shown in FIG. 27, the reference value DT17A1 is a reference value for determining the required number of SVRs for the voltage drop amount (V). The reference value DT17A1 is 600V <voltage drop amount <1200V, the required number of SVR is 1, 1200V ≦ voltage drop amount <1800V, the required number of SVR is 2, 1800V ≦ voltage drop amount <2400V The required number of SVR is set to three.

  The SVR optimum position calculation unit 60 is based on a transient system data group DT63, passing current / supply voltage data DT14, and excess capacity determination reference value DT17A, which will be described later, and SVR optimum position data DT61 indicating an optimum position for installing the SVR. Is calculated.

  As shown in FIG. 28, the SVR optimum position data DT61 has items of the total number and SVR information 1 to n. Each SVR information 1 to n includes an SVR installation section serial number, an SVR installation utility pole serial number, and an SVR capacity. The SVR installation section serial number is a section serial number of the SVR installation section. The SVR installation utility pole serial number is the utility pole serial number of the SVR installation utility pole. The SVR capacity is the capacity [kVA] of the SVR.

  The transient system data creation unit 62 creates the transient system data DT63 excluding the SVR information, based on the system data group 12 received from the distribution line automation system 2. That is, the transient system data creation unit 62 has a function as system information acquisition means. When the SVR optimum position data DT61 is registered, the transient system data creation unit 62 adds the registered SVR optimum position data DT61 based on the registered SVR optimum position data DT61 and the system data group DT12. A system data group DT63 is created. Thereafter, the computer 3F performs processing in the passing current / supply voltage calculation unit 13A and the SVR optimum position calculation unit 51, and repeatedly performs processing until the voltage drop in all routes is eliminated.

  In the passing current / supply voltage calculation unit 13 shown in FIG. 23, the passing current / supply voltage calculation unit 13 </ b> A replaces the system data group DT <b> 12 from the distribution line automation system 2 with a transient system data creation unit 62 and a transient system. Information from the system data group DT63 is acquired, and the passing current / supply voltage data DT14 is calculated. The calculation method of the passage current / supply voltage data DT14 in the passage current / supply voltage calculation unit 13A is the same as that in the first embodiment.

  The SVR optimum capacity calculation unit 51A determines that the SVR passage current is the SVR passage allowable current based on the transient system data group DT63, the passage current / supply voltage data 14, and the SVR passage current upper limit value included in the excess capacity determination reference value DT17. The minimum capacity that does not exceed the SVR optimum capacity is registered as the SVR capacity of the SVR optimum position data DT61. The calculation method of the SVR optimum capacity in the SVR optimum capacity calculation unit 51A is the same as the calculation method of the SVR optimum capacity in the SVR optimum capacity calculation unit 51 of the sixth embodiment except that the transient system data group DT63 is used instead of the system data group 12. It is the same except for the point provided.

  The result output unit 20 outputs information based on the SVR optimum position data DT61 created by the SVR optimum position calculating unit 60 and the SVR optimum capacity calculating unit 51 to the external output device 4. For example, as shown in FIG. 29, the result output unit 20 outputs a screen format H4 displaying the SVR optimum position data DT61. The screen format H4 is configured so that it can be displayed in the same manner in other embodiments or embodiments in which these are combined.

  Next, a method for calculating the SVR optimum position data DT61 in the SVR optimum position calculation unit 60 will be described.

  The SVR optimum position calculation unit 60 calculates a voltage drop amount based on the transient system data group DT63, the passing current / supply voltage data DT14, and the excess capacity reference value 17, and the calculation method is the first implementation. It is the same as the form.

  The SVR optimum position calculation unit 60 searches for a section where the section supply voltage exceeds the voltage drop excess limit for each distribution line supply route.

  When an excessive voltage drop section is detected by this search, the required number of SVRs is calculated based on the maximum voltage drop amount of the supply route in the distribution line and the limit of excess voltage drop for each required SVR of the excess capacity reference value 17. . Then, the calculated required number of SVRs is registered as the total number of SVR optimum position data DT61.

  The SVR optimum position calculation unit 60 uses the transient power data generation unit 62 and the passing current / supply voltage calculation unit 13 as the start interval, and uses the transient power supply data generation unit 62 and the passing current / supply voltage calculation unit 13 as the start period. Is repeated for the required number of SVR.

  The SVR optimum position calculation unit 60 sets the section in which the voltage drop excess has been eliminated as the SVR installation section, and registers the SVR installation position serial number in the SVR optimum position data DT61.

  The SVR optimum position calculation unit 60 sets the utility pole in which no other equipment is installed among the utility poles in the section as the SVR installation utility pole, and registers it in the SVR installation utility pole serial number of the SVR optimum position data DT61.

  With reference to FIG. 30, a method of calculating SVR installation position data DT61 will be described.

  The SVR optimum position calculation unit 60 first calculates that the most power source side section where the voltage drop is occurring is the section K3 (procedure 1). Next, the section K3 is set as the first SVR installation position (procedure 2). Next, voltage calculation is performed using the section K3 as the SVR installation position, and a section K5, which is the most power supply side section where a voltage drop has occurred as a result of the voltage calculation, is calculated. Then, the section K5 is set as the second SVR installation position (procedure 3).

  As a result, when the SVR optimal position calculation unit 60 calculates the SVR installation position, the SVR optimal position calculation unit 60 reflects it in the transient system data group DT63, and repeats this for the required number of SVRs, thereby calculating the optimal installation positions of all the SVRs. be able to.

  According to the present embodiment, in addition to the effects of the sixth embodiment, SVR optimum position data DT61 in an arbitrary system state is calculated, thereby obtaining information regarding SVR such as the SVR installation position and the required number of SVR. Therefore, it is possible to more appropriately support the avoidance of over-investment of facilities and the effective use of existing facilities.

  Further, the SVR installation position and the SVR optimum capacity are provisionally determined, reflected in the transient system data group DT63, and a series of processes for calculating the SVR installation position and the SVR optimum capacity is repeated again, whereby a more optimal SVR installation position and The SVR optimum capacity can be calculated.

(Eighth embodiment)
FIG. 31 is a block diagram showing a configuration of a distribution system excess facility check system 1G according to the eighth embodiment.

  The distribution system excess facility check system 1G is the same except that the computer 3F is replaced with the computer 3G in the distribution system excess facility check system 1F shown in FIG. The computer 3G is obtained by adding an excess capacity span extraction unit 40 and an optimum span calculation unit 41 to the computer 3F shown in FIG. The excess capacity span extraction unit 40 is the same as that described in the third embodiment. The inter-span optimal capacity calculation unit 41 is the same as that described in the fourth embodiment.

  FIG. 32 is a data flow diagram of processing by the distribution system excess facility check system 1G according to the eighth embodiment.

  When the optimum span capacity calculation unit 41 calculates the optimum capacity of the span equipment, the optimum capacity data 31A for each equipment is created and reflected in the transient system data group DT63. When calculating the SVR optimum capacity, the SVR optimum capacity calculating unit 51A creates SVR optimum position data DT61 and reflects it in the transient system data group DT63. When calculating the SVR installation position, the SVR optimal position calculation unit 60 creates SVR optimal position data DT61 and reflects it in the transient system data group DT63.

  The span optimal capacity calculation unit 41, the SVR optimal capacity calculation unit 51A, and the SVR optimal position calculation unit 60 perform processing based on the transient system data group DT63 reflecting the calculated information. By updating the transient system data group DT63 and alternately processing each of the optimal span calculation unit 41, the optimal SVR calculation unit 51A, and the optimal SVR position calculation unit 60, the capacity of the span installation in the distribution line , The optimum capacity of the SVR and the installation position of the SVR are calculated.

  The result output unit 20 is information based on the SVR optimum position data DT61 created by the SVR optimum position calculator 60 and the SVR optimum capacity calculator 51, and the equipment-specific optimum capacity data DT31 created by the span optimum capacity calculator 41. Is output to the external output device 4.

  According to the present embodiment, it is possible to obtain the operational effects of the fourth embodiment and the seventh embodiment. In addition, by combining the distribution system excess equipment check system according to the fourth embodiment and the seventh embodiment, calculation of the optimal span capacity, the optimum SVR position (including the necessary number of SVR), and the optimum SVR capacity can be calculated. Since the process is repeated, the optimum voltage improvement can be performed.

(Other embodiments)
In each embodiment, the excessive capacity facility has been described as a switch, a span device, and an SVR, but is not limited to these facilities. If it is the equipment provided in the power distribution system, it is possible to extract excess capacity equipment or calculate the optimum capacity by performing the same determination and calculation.

  In each embodiment, the switch, the span equipment, or the SVR, which are the objects of the excess capacity equipment, are described separately for convenience of explanation, but these equipments can be arbitrarily combined. Also, other equipment not described in each embodiment can be combined in the same manner. Further, by combining output (display / printing) in the same manner, it is possible to obtain effects such as grasping the extracted excess equipment and its capacity.

  In each embodiment, the load data group DT11 and the system data group DT12 are respectively received in a lump, but various data included in each may be received individually, or may be obtained by being divided into several parts. Alternatively, the received data may be duplicated.

  In each embodiment, the value (capacity to be passed, amount of voltage drop, etc.) relating to the capacity smaller by one size used in the processing unit for extracting excess capacity equipment (switch, spanning equipment, SVR, etc.) is based on what. You may ask for it. For example, it may be included in the system data group DT12 received from the distribution line automation system, may be stored in advance in the computer 3 or the like, or a value related to a capacity one size smaller than the original capacity may be obtained. . These can be appropriately selected according to the system to be applied.

  The computer may have any configuration as long as it has a calculation unit and a control unit (for example, an element such as a CPU (central processing unit)) and a storage unit (for example, a hard disk or a memory). Therefore, it may be a computer system in which two or more computers or an arbitrary number of storage devices (for example, storage) are networked so that information can be transmitted and received.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

The block diagram which shows the structure of the distribution system excess equipment check system which concerns on the 1st Embodiment of this invention. The flowchart of the data by the process in the distribution system excess equipment check system which concerns on 1st Embodiment. The data structure figure which shows the structure of the passage current / supply voltage data which concerns on 1st Embodiment. The data structure figure showing the structure of the excess capacity judging reference value concerning a 1st embodiment. The data structure figure showing the structure of excess capacity equipment data concerning each embodiment. The image figure which shows the screen format which displays the passage current / supply voltage data based on 1st Embodiment. The image figure which shows the screen format which displays the excess capacity equipment data which concerns on 1st Embodiment. The electric power system figure for demonstrating the calculation method of the passage current / supply voltage data in the passage current / supply voltage calculation part which concerns on 1st Embodiment. The block diagram which shows the structure of the distribution system excess equipment check system which concerns on 2nd Embodiment. The data flow figure by the process in the distribution system excess equipment check system which concerns on 2nd Embodiment. The data structure figure which shows the structure of the optimal capacity | capacitance capacity | capacitance data for every installation which concerns on 2nd Embodiment. The image figure which shows the screen format which displays the excess capacity | capacitance equipment data which concern on 2nd Embodiment, and the optimal capacity | capacitance data for every equipment. The block diagram which shows the structure of the distribution system excess equipment check system which concerns on 3rd Embodiment. The flowchart of the data by the process in the distribution system excess equipment check system which concerns on 3rd Embodiment. The electric power system figure for demonstrating the extraction method of the excess capacity installation in the excess capacity span extraction part which concerns on 3rd Embodiment. The data structure figure which shows the structure of the intermediate data of the excess capacity equipment data which concerns on 3rd Embodiment. The data structure figure which shows the structure of the intermediate data of the excess capacity equipment data which concerns on 3rd Embodiment. The block diagram which shows the structure of the distribution system excess equipment check system which concerns on 4th Embodiment. The data flow figure by the process in the distribution system excess equipment check system which concerns on 4th Embodiment. The block diagram which shows the structure of the distribution system excess equipment check system which concerns on 5th Embodiment. The data flow figure by the process in the distribution system excess equipment check system which concerns on 5th Embodiment. The block diagram which shows the structure of the distribution system excess equipment check system which concerns on 6th Embodiment. The flowchart of the data by the process in the distribution system excess equipment check system which concerns on 6th Embodiment. The block diagram which shows the structure of the distribution system excess equipment check system which concerns on 7th Embodiment. The data flow figure by the process in the distribution system excess installation check system which concerns on 7th Embodiment. The data structure figure showing the structure of the excess capacity judging reference value concerning a 7th embodiment. The data structure figure showing the structure of a part of excess capacity judging reference value concerning a 7th embodiment. The data structure figure showing the structure of SVR optimal position data concerning a 7th embodiment. The image figure which shows the screen format which displays the SVR optimal position data which concerns on 7th Embodiment. The flowchart for demonstrating the procedure of the calculation method of SVR installation position data which concerns on 7th Embodiment. The block diagram which shows the structure of the distribution system excessive equipment check system which concerns on 8th Embodiment. The data flow figure by the process in the distribution system excess installation check system which concerns on 8th Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Distribution system excess equipment check system, 2 ... Distribution line automation system, 3 ... Computer, 4 ... External output device, 5 ... Input device, 13 ... Passing current / supply voltage calculation part, 16 ... Excess capacity determination criteria setting part, 18 ... excess capacity switch extraction unit, 20 ... result output unit.

Claims (10)

It is a system that is connected so as to be able to receive information on the power distribution system from a distribution line automation system that monitors and controls the power distribution system, and checks excess equipment among the facilities provided in the power distribution system,
System information acquisition means for acquiring system information related to the distribution system from the distribution line automation system;
Load information acquisition means for acquiring load information related to the distribution system from the distribution line automation system;
Based on the system information acquired by the system information acquisition means and the load information acquired by the load information acquisition means, a passing current for calculating a passing current value passing through the section for each section into which the distribution lines are divided A value calculating means;
Passing current reference value input means for inputting a passing current reference value that is a reference value for determining whether the facility is an excess facility based on the passing current of the facility;
Whether the passing current value calculated by the passing current value calculating means based on the passing current reference value input by the passing current reference value input means is within a range allowed by the equipment provided in the distribution line. Facility acceptance judging means for judging whether or not,
When the determination result of the facility permission determining means permits, the passing current value calculated by the passing current value calculating means based on the passing current reference value input by the passing current reference value input means is the facility Facility allowable re-determination means for determining whether the capacity of the facility smaller than the facility determined by the permission determination means is within the allowable range;
An over-distribution-system excess equipment check system, comprising: an excess equipment detection means for detecting the equipment determined by the equipment tolerance judgment means as an excess equipment when the judgment result of the equipment tolerance redetermination means permits. When the determination result of the facility allowable re-determination means permits, the passing current value calculated by the passing current value calculating means based on the passing current reference value input by the passing current reference value input means is the Optimum capacity calculation that determines the capacity of the equipment until it is outside the range allowed by the equipment provided on the distribution line, and calculates the smallest capacity as the optimum capacity within the range allowed by the equipment. The distribution system excess equipment check system according to claim 1, further comprising: means. An output unit that outputs the output for each distribution line in association with the facility detected by the excess facility detection unit, the optimal capacity of the facility calculated by the optimal capacity calculation unit, and the type of the facility; The distribution system excess equipment check system according to claim 2.   The distribution system excess equipment check system according to claim 1 or 2, wherein the equipment is a switch. The facility is a spanning facility,
Voltage drop limit input means for inputting a voltage drop limit indicating a voltage drop limit of the distribution line;
Based on the passing current value calculated by the passing current value calculating means and the system information acquired by the system information acquiring means, a voltage drop for calculating a voltage drop amount of the section for each section into which the distribution lines are divided A quantity calculating means,
The excess equipment detection means inputs the voltage drop amount calculated by the voltage drop amount calculation means based on the capacity smaller than the span equipment determined by the equipment tolerance determination means by the voltage drop limit input means. 2. The distribution system excess facility check system according to claim 1, wherein when the voltage drop limit is not exceeded, the span installation is detected as an excess facility. When the determination result of the facility allowable re-determination means permits, the capacity of the facility is decreased until the passing current value is out of the allowable range of the facility or the voltage drop amount exceeds the voltage drop limit. And an optimum capacity calculating means for calculating, as an optimum capacity, a minimum capacity within which the passing current value is within a range allowed by the equipment and the voltage drop amount does not exceed the voltage drop limit. The distribution system excess equipment check system according to claim 5, wherein:   The distribution facility excess facility check system according to claim 1 or 2, wherein the facility is a voltage compensation device that compensates a voltage of a distribution line. It is a system that is connected so as to be able to receive information on the power distribution system from a distribution line automation system that monitors and controls the power distribution system, and checks excess equipment among the facilities provided in the power distribution system,
System information acquisition means for acquiring system information related to the distribution system from the distribution line automation system;
Load information acquisition means for acquiring load information related to the distribution system from the distribution line automation system;
Transient system information creating means for creating transient system information that is information related to a system obtained by removing the distribution voltage compensation device provided on the distribution line from the system information acquired by the system information acquiring unit;
Based on the transient system information created by the transient system information creating means and the load information obtained by the load information obtaining means, a passing current value passing through the section is determined for each section into which the distribution lines are divided. A passing current value calculating means for calculating,
Voltage compensation device passage current reference value input means for inputting a voltage compensation device passage current reference value, which is a reference value for determining whether or not the voltage compensation device is an excess facility based on the passage current of the voltage compensation device; ,
Based on the voltage compensation device passage current reference value input by the voltage compensation device passage current reference value input device, the passage current value calculated by the passage current value calculation device is the voltage provided to the distribution line. Voltage compensation device tolerance determination means for determining whether or not the compensation device is within a permissible range;
When the determination result of the voltage compensator allowance determination unit permits, the passage current value calculation unit calculates the voltage compensator passage current reference value input by the voltage compensator passage current reference value input unit. Voltage compensation device allowable re-determination means for determining whether or not the passing current value is within a range allowed by the voltage compensation device with a capacity smaller than that of the voltage compensation device determined by the voltage compensation device permission determination means;
If the determination result of the voltage compensator allowable re-determination means permits, excess voltage compensator detection means for detecting the voltage compensator determined by the equipment allowance determination means as excess equipment;
Based on the passing current value calculated by the passing current value calculating means and the transient system information created by the transient system information creating means, the voltage drop amount of the section is calculated for each section into which the distribution lines are divided. A voltage drop amount calculating means for calculating;
Overvoltage distribution system, comprising: voltage compensation device installation number calculation means for calculating the number of installed voltage compensation devices in the distribution system based on the voltage drop amount calculated by the voltage drop amount calculation means Equipment check system. Based on the voltage drop amount calculated by the voltage drop amount calculation means, the voltage compensation device installation position calculation means for calculating the installation position of the voltage compensation device in the distribution system,
The transient system information creating means reflects the installation position of the voltage compensator calculated by the voltage compensator installation position calculating means in the transient system information,
When the transient system information is reflected by the transient system information creating unit until the voltage compensation device installation position calculating unit satisfies the installed number of the voltage compensation devices calculated by the voltage compensation device installation number calculating unit, The distribution system excess facility check system according to claim 8, wherein an installation position of the voltage compensator is calculated. Whether or not the span equipment is excessive equipment, span span equipment passage current reference value input means for inputting a span equipment passage current reference value that is a reference value for determining based on the passage current of the span equipment,
Based on the span equipment passage current reference value input by the span equipment passage current reference value input means, the passage current value calculated by the passage current value calculation means is the span provided in the distribution line. Spacing equipment tolerance judging means for judging whether or not the equipment is within the allowable range;
When the determination result of the span equipment permission judgment means permits, the passage current value calculation means is calculated based on the span equipment passage current reference value input by the span equipment passage current reference value input means. The spanning facility permissible re-determination unit that determines whether the passing current value is within a range permitted by the spanning facility with a capacity that is smaller than the spanning facility determined by the spanning facility allowance determining unit;
Voltage drop limit input means for inputting a voltage drop limit indicating a voltage drop limit of the distribution line;
The voltage drop calculated by the voltage drop amount calculation unit based on the capacity smaller than the span installation determined by the span installation allowance determination unit when the determination result of the span installation allowable re-determination unit permits. If the amount does not exceed the voltage drop limit input by the voltage drop limit input means, excess span equipment detection means for detecting the span equipment as excess equipment;
If the determination result of the span span equipment re-determination means permits, the span span facility until the passing current value falls outside the range permitted by the span span facility or the voltage drop amount exceeds the voltage drop limit. Optimum capacity calculation for determining as the optimum capacity the smallest capacity within which the passing current value is within the allowable range of the span equipment and the amount of voltage drop does not exceed the voltage drop limit. Means,
When the transient system information is reflected by the transient system information creation means, the excess capacity is detected by the excess span equipment detection means and the optimum capacity is calculated by the optimum capacity calculation means. Item 10. The distribution system excess facility check system according to Item 9.

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