JP2009081941A - Switch controller for circuit breaker of dispersed power source system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch controller for the breaker of a dispersed power source system, which can improve the flexibility in setting of array information of an upstream breaker in a power path until reaching just before the breaker of the dispersed power source system from a receiving breaker from a system power source. <P>SOLUTION: The switch controller 200 for the breaker 52G of the dispersed power source system 100, which performs system-interconnected or self-sustaining operation, is constituted so that its setting expression may be set by at least four to nine parameters CB1-CB9, the first logical symbol, which means series connection, the second logical symbol, which means parallel connection, and a dividing symbol, which divides a part of array information as a group of breakers, for array information of upstream breakers 52R and 52, which are arrayed in the power path P until reaching just before the breaker 52G of the dispersed power source system 100 from a receiving breaker 52R from the system power source 300. It controls the switching of the breaker 52G of the dispersed power source system 100 on the basis of the open/close state of the power path settled by the setting formula. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an open / close control device for a circuit breaker of a distributed power supply device that performs grid connection or independent operation.

  Conventionally, when performing grid interconnection or independent operation with a distributed power supply device, the power path from the power receiving circuit breaker from the system power supply to just before the circuit breaker of the distributed power supply device is considered from the viewpoint of safety, etc. In many cases, circuit breakers are arranged according to user equipment conditions.

  FIG. 8 is a diagram illustrating an example of a schematic configuration of a conventional power facility that performs grid interconnection or independent operation with the distributed power supply device 100.

As shown in FIG. 8, a plurality of upstream circuit breakers 52 (52 ₁ ) are usually provided in the power path P from the power receiving circuit breaker 52R from the system power supply 300 to the position immediately before the circuit breaker 52G of the distributed power supply device 100. , 52 ₂ ,...

  FIG. 9 is a schematic diagram showing an arrangement state of the circuit breakers in the power path P shown in FIG. 8, FIG. 9 (a) shows an example thereof, and FIG. 9 (b) shows another example. ing.

In the arrangement shown in FIG. 9A, the circuit breakers 52 ₁ , 52 ₂ , and 52 ₃ provided between the power receiving circuit breaker 52R and the circuit breaker 52G are connected in series. Further, in the arrangement state shown in FIG. 9 (b), between the series connected power receiving breakers 52R and breaker 52G, breaker 52 ₁ connected in parallel, 52 ₂ are connected to the circuit breaker 52 ₃ series ing. The upstream circuit breakers 52R, 52 ₁ , 52 ₂ ,... In the market are not limited to the arrangement state as shown in FIG.

  By the way, the switching control device 200 ′ that controls the switching of the circuit breaker 52G disposed immediately before the distributed power supply device 100 depends on the switching state of the upstream circuit breaker arranged in the power path P and positioned upstream of the circuit breaker 52G. The circuit breaker 52G is controlled to open and close. That is, the switching control device 200 ′ opens and closes the circuit breaker 52G in a state where it is recognized whether or not electric power is supplied from the system power supply 300 to the load L side based on the switching signal from the upstream circuit breaker. .

  Specifically, the switching control device 200 ′ performs system interconnection by closing the circuit breaker 52G when it recognizes that power is being supplied from the system power supply 300 to the load L side, while the system power supply 300 When it is recognized that electric power is not supplied from the load L to the load L side, the circuit breaker 52G is closed to perform a self-supporting operation.

  However, as described above, since the upstream circuit breaker for recognizing the presence or absence of power supply from the system power supply 300 to the load L side is in various arrangement states depending on the user's equipment status, the switching control device 200 'In order to recognize whether or not power is supplied from the system power supply 300 to the load L side by judging the open / closed state of the power path corresponding to the arrangement state of the upstream circuit breakers that are different for each user, Was configured (customized).

  Alternatively, the opening / closing control device 200 ′ is pre-set with a model formula having three limited variables: CB1 * CB2 * CB3, and is upstream for recognizing whether power is supplied from the system power supply 300 to the load L side. The circuit breaker array information can be input to these three variables. Here, the variables CB1, CB2, and CB3 are for the switching control device 200 'to calculate the switching signal from the upstream circuit breaker, and "*" is a logical product sign that means serial connection.

  In the switching control device 200 ′, when the number of upstream circuit breakers is three or less, the arrangement information of the upstream circuit breakers can be directly assigned to the variables CB1, CB2, and CB3. Invite. That is, on the site, array information obtained by appropriately dividing array information of four or more upstream circuit breakers into three circuit breaker groups connected in series is assigned to the variables CB1, CB2, and CB3 of the model formula, respectively. In addition, it is possible to recognize whether or not electric power is supplied from the system power supply 300 to the load L side by the switching signals from these upstream circuit breakers.

This will be specifically described by taking as an example the case where there are four upstream circuit breakers (52R, 52 ₁ , 52 ₂ , 52 ₃ ) in the power path P shown in FIG.

For example, in the arrangement state shown in FIG. 9 (a), assigns the sequence information of the circuit breaker 52R to variable CB1, the sequence information of the series connection of the circuit breaker 52 ₁ and circuit breaker 52 _2, individually separately for each user " assigned to the variable CB2 "= CB2a * CB2b" using CB2a * computable configured as CB2b "(customized) to repeater T1, allocate more sequence information of the circuit breaker 52 ₃ to the variable CB3. Thereby, the model formula: CB1 * CB2 * CB3 can be changed to CB1 * CB2a * CB2b * CB3 by the repeater T1 separately arranged. Therefore, the switching control device 200 ′ can recognize whether or not electric power is supplied from the system power supply 300 to the load L side by the switching signal S from the upstream circuit breakers 52R, 52 ₁ , 52 ₂ , 52 _3. .

Specifically, when all of the circuit breakers 52R, 52 ₁ , 52 ₂ , and 52 ₃ are closed, the circuit breakers 52R, 52 ₁ , 52 ₂ , and 52 _{3 are changed} to variables CB1, CB2a, CB2b, and CB3, respectively. The logical signal “1” is input, and the calculation result of the model formula: CB1 * CB2 * CB3 = CB1 * CB2a * CB2b * CB3 becomes “1”. In this case, power is supplied from the system power supply 300 to the load L side. Further, when at least one circuit breaker _{52R, 52 1, 52 2,} 52 3 are opened, breaker _{52R, 52 1, 52 2,} 52 3 from the variable CB1, CB2a, at least one CB2b, CB3 The logical signal “0” is input, and the calculation result of the model formula: CB1 * CB2 * CB3 = CB1 * CB2a * CB2b * CB3 becomes “0”. In this case, power is not supplied from the system power supply 300 to the load L side.

Further, in the arrangement state shown in FIG. 9B, the arrangement information of the circuit breaker 52R is assigned to the variable CB1, and the arrangement information of the parallel connection of the circuit breaker 52 ₁ and the circuit breaker 52 ₂ is separately “for each user”. CB2a + CB2b "assigned to the variable CB2" = CB2a + CB2b "using repeaters T2 computed allow configured (customized) as a further allocates the sequence information of the circuit breaker 52 ₃ to the variable CB3. Thereby, the model formula: CB1 * CB2 * CB3 can be changed to CB1 * (CB2a + CB2b) * CB3 by the repeater T2 separately arranged. Therefore, the switching control device 200 ′ can recognize whether or not electric power is supplied from the system power supply 300 to the load L side by the switching signal S from the upstream circuit breakers 52R, 52 ₁ , 52 ₂ , 52 _3. . Here, “+” is a symbol of logical sum meaning parallel connection, and “(”, “)” is a part of the arrangement information of the upstream circuit breakers 52R, 52 ₁ , 52 ₂ , 52 ₃ as a group. It is a delimiter symbol that delimits as a circuit breaker group.

When Specifically, breaker 52R, 52 _1, 52 _2, 52 at least one of the breaker 52R, 52 ₃ both closed and breaker 52 _1, 52 ₂ of the ₃ is closed, breaker 52R , 52 ₃ from the variable CB1, CB3 respectively is input logic signal "1" to and breaker 52 _1, 52 ₂ from the variable CB2a, is input logic signal "1" to at least one of CB2b, model formula: CB1 * The calculation result of CB2 * CB3 = CB1 * (CB2a + CB2b) * CB3 is “1”. In this case, power is supplied from the system power supply 300 to the load L side. Also, when at least one of the circuit breakers 52R, 52 ₃ among the circuit breakers 52R, 52 ₁ , 52 ₂ , 52 ₃ is open and / or when both of the circuit breakers 52 ₁ , 52 ₂ are open, The logic signal “0” is input to at least one of the variables CB 1 and CB ₃ from the devices 52 R and 52 ₃ and / or the logic signal “0” is input to both the variables CB _{2 a} and CB _{2 b} from the circuit breakers 52 ₁ and 52 ₂ . The calculation result of the model formula: CB1 * CB2 * CB3 = CB1 * (CB2a + CB2b) * CB3 is “0”. In this case, power is not supplied from the system power supply 300 to the load L side.

  As described above, in any conventional technique, when setting the arrangement information of the upstream circuit breaker in the power path from the power receiving circuit breaker from the system power supply to the position immediately before the circuit breaker of the distributed power supply device, It is very inconvenient because it is necessary to carry out complicated work such as customizing the switching control device or separately arranging a customized repeater for the switching control device for which the model formula is set.

In addition, there are the following Patent Documents 1 and 2 as references in the related technical field. That is, Patent Document 1 discloses a consumer power facility including an integrated controller that manages parameters necessary for controlling a plurality of power generation units and an operation indicator. Patent Document 2 discloses a device for creating a single-line diagram for a power receiving facility.
JP 2000-116195 A JP 2002-78199 A

  Therefore, the present invention provides a distributed power supply device capable of improving the degree of freedom in setting the arrangement information of the upstream circuit breaker in the power path from the power receiving circuit breaker from the system power supply to just before the circuit breaker of the distributed power supply device. An object of the present invention is to provide an open / close control device for a circuit breaker.

  In order to solve the above-described problem, the present invention provides a circuit breaker switching control device for a distributed power supply device that performs grid interconnection or autonomous operation, and includes a circuit breaker for receiving power from a system power supply immediately before the circuit breaker of the distributed power supply device. At least 4 to 9 pre-installed so that an open / close signal corresponding to the open / close state of the upstream circuit breaker is input with respect to the array information of the upstream circuit breaker arranged in the power path up to A group of circuit breakers including a variable, a first logic symbol representing a series connection of the upstream circuit breakers, a second logic symbol representing a parallel connection of the upstream circuit breakers, and a part of the arrangement information of the upstream circuit breakers The setting formula is configured to be settable by a delimiter symbol divided as a group, and based on the switching state of the power path calculated from the switching signal of the upstream circuit breaker by the set setting formula, the circuit breaker of the distributed power supply device Open / close control Providing switching controller for circuit breaker of the dispersed power supply and performs.

  According to the circuit breaker switching control device of the distributed power supply apparatus according to the present invention, the at least 4 to 9 variables and the upstream circuit breaker connected in series with respect to the arrangement information of the upstream circuit breaker in the power path. The first logical symbol (specifically a logical product symbol) meaning the above, the second logical symbol (specifically the logical sum symbol) meaning the parallel connection of the upstream circuit breakers, and the delimiter symbol (Specifically, parentheses) and a setting equation can be set, and based on the switching state of the power path calculated from the switching signal of the upstream circuit breaker by the set setting equation, Since the circuit breaker switching control is performed, it is not necessary to customize the switching control device for each user as in the prior art. For example, there are 4 upstream circuit breakers for recognizing whether power is supplied from the system power source to the load side. More than Also, it is possible to assign sequence information said upstream breaker directly to the variable. That is, it is possible to improve the degree of freedom in setting the upstream breaker arrangement information in the power path.

  In the switching control device for the circuit breaker of the distributed power supply apparatus according to the present invention, the variable, the first logic symbol, the second logic symbol, and the separator are displayed on a screen (for example, a pressure-sensitive screen) that can be operated. It is preferable that the selection information can be input and the arrangement information of the upstream circuit breakers to be set is displayed on the screen by the selection input operation on the screen. Thus, when setting the arrangement information of the upstream circuit breaker, the input operation of the variable, the first and second logic symbols, and the delimiter is performed easily and quickly while checking the setting information. be able to.

  As described above, according to the present invention, the degree of freedom in setting the arrangement information of the upstream circuit breaker in the power path from the power receiving circuit breaker from the system power supply to the position immediately before the circuit breaker of the distributed power supply device is improved. It is possible to provide an open / close control device for a circuit breaker of a distributed power supply device capable of performing the above.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the following embodiment is an example which actualized this invention, Comprising: The thing of the character which limits the technical scope of this invention is not.

  FIG. 1 is a diagram illustrating an example of a schematic configuration of a power facility including an embodiment of an opening / closing control device according to the present invention. In the power equipment shown in FIG. 1, the same reference numerals are given to substantially the same components as those of the conventional power equipment shown in FIG.

The power facility shown in FIG. 1 supplies power from the distributed power supply apparatus 100 in a state where the system power supply 30 and the distributed power supply apparatus 100 are connected in parallel to perform a connected operation and the system power supply 30 is disconnected. One of the self-sustained operation to be performed is performed. In this power facility, a plurality of upstream circuit breakers 52R, 52 (52 ₁ , 52) are connected to the power path P from the power receiving circuit breaker 52R from the system power supply 300 to the circuit breaker 52G of the distributed power supply device 100. ₂ , ...) are arranged.

  The circuit breaker 52G is disposed immediately before the distributed power supply device 100. The switching control device 200 has at least 4 to 9 variables, a first logic symbol, and an upstream circuit breaker arrangement information for recognizing whether power is supplied from the system power supply 300 to the load L side, The setting formula can be set by the second logic symbol and the delimiter symbol, and the open / close state of the power path calculated from the open / close signal S corresponding to the open / close state of the upstream circuit breaker is set by the set set formula. Based on this, the switching control of the circuit breaker 52G of the distributed power supply apparatus 100 is performed.

  FIG. 2 is a block diagram illustrating a schematic configuration of the opening / closing control device 200. As shown in FIG. 2, the opening / closing control device 200 includes a control unit 210 and an input operation unit 220.

The control unit 210 can connect a plurality of upstream circuit breakers 52R, 52 ₁ , 52 ₂ ,... Arranged in the power path P. The input operation unit 220 is connected to the control unit 210 and can set a setting expression (calculation expression) by inputting variables and symbols described later by an input operation by an operator.

  The control unit 210 includes a processing unit 211 such as a CPU (Central Processing Unit) and a storage unit 212 such as a ROM (Read Only Memory) and a RAM (Random Access Memory). By opening the program from the storage unit 212 and executing the read control program, the circuit breaker 52G is controlled to open and close.

  Specifically, the control unit 210 performs at least 4 to 9 variables (that is, 4 or more variables), a first logic symbol, and a second logic symbol for the arrangement information of the connected upstream circuit breakers. The setting formula can be set by the delimiter.

  Here, the variables are nine variables CB1 to CB9, and are provided in advance so that an opening / closing signal S from an upstream circuit breaker to be connected is input. The switching signal S from the connected upstream circuit breaker is a logic signal indicating “0” when the upstream circuit breaker is open and indicating “1” when the upstream circuit breaker is closed. . That is, the upstream circuit breaker transmits a logic signal of “0” to the switching control device 200 when it is open, and transmits a logic signal of “1” to the switching control device 200 when it is closed. ing.

  Note that the number of variables is set to nine here from the viewpoint that if the number of variables is about nine from past empirical statistics, it can be almost handled. However, the number of variables may be 10 or more (for example, 20 or 30) as necessary.

  The first logical symbol is a logical product (AND) symbol (here, “*”) that means a series connection of upstream circuit breakers. The second logical symbol is a logical sum (OR) symbol (in this case, “+”) that means a parallel connection of upstream circuit breakers. The delimiter symbol is a parenthesis symbol (here, “(”, “)”) that delimits part of the arrangement information of the connected upstream circuit breakers as a group of circuit breaker groups. This delimiter is a function that gives priority to the inner calculation that is divided over the outer calculation that is divided by dividing the array information into circuit breaker groups (that is, by delimiting variables that are logically operated). Have

  And the control part 210 performs switching control of the circuit breaker 52G of the distributed power supply apparatus 100 based on the switching state of the electric power path calculated from the switching signal S of the connected upstream circuit breaker by the set setting formula. It is configured as follows.

  According to the switching control device 200 described above, a setting equation corresponding to the arrangement information of the connected upstream circuit breakers can be set, and the power calculated from the switching signal S of the upstream circuit breaker by this setting equation. Since the circuit breaker 52G of the distributed power supply device 100 is controlled to open / close based on the open / close state of the path, it is not necessary to customize the open / close control apparatus for each user as in the prior art, and the open / close signal S is input in the power path P. Of course, when there are three or less upstream circuit breakers, even if there are four or more upstream circuit breakers, the arrangement information of those upstream circuit breakers can be assigned to the variables as they are. Therefore, it is possible to easily and immediately cope with various circuit breaker arrangements of the upstream circuit breakers in the power path P.

  More specifically, referring to FIGS. 3 and 4, FIG. 3 is a diagram illustrating an example of the display screen 221 of the input operation unit 220 in the opening / closing control device 200 illustrated in FIGS. 1 and 2.

  In the present embodiment, the input operation unit 220 is connected to an input system and an output system of the control unit 210 (see FIG. 2), and is a display input operation unit capable of input operation. As shown in FIG. 3, the display input operation unit 220 can input an opening / closing signal S from an upstream circuit breaker connected to the control unit 210 to the control unit 210 by an input operation by an operator. The output information from the control unit 210 can be displayed as an image. A typical example of the display input operation unit 220 is a resistance pressure-sensitive touch panel device or an electrostatic touch panel device.

  Then, the control unit 210 displays the variables CB1 to CB9, the first logical symbol “*”, the second logical symbol “+”, and the separators “(”, “)” on the display screen 221 of the display input operation unit 220. The arrangement information of the upstream circuit breakers to be set can be displayed by a selection input operation on the display screen 221.

  In the opening / closing control apparatus 200 having such a configuration, it is possible to easily input the variables CB1 to CB9, the logical symbols “*”, “+”, and the delimiters “(”, “)” and confirm the setting information. it can.

  The display screen 221 of the display input operation unit 220 shown in FIG. 3 includes a variable display selection area α1 that displays the variables CB1 to CB9 so that selection input is possible, a first logical symbol “*”, a second logical symbol “+”, and a separator. A symbol display selection area α2 for displaying the symbol “(”, “)” so as to allow selective input, an input information display area α3 for displaying information input by the input operation, and information input by the input operation A confirmation operation area α4 for performing the input operation is displayed. Further, the display screen 221 also displays an erasing operation area α5 for performing an input operation for erasing a variable or symbol input by the input operation (here, erasing the most recent variable or symbol by one character). Yes. Note that, among the variables CB1 to CB9, a variable that is once selected and displayed in the input information display area α3 is in a selective input disabled state until it is deleted.

  4 is a schematic diagram illustrating an example of an arrangement state of the upstream circuit breaker and the circuit breaker 52G disposed immediately before the distributed power supply device 100 in the power path P (P1) illustrated in FIG. 1, and FIG. FIG. 4B shows a signal input correspondence table of the upstream circuit breakers 52R, 52B2, and 52FG2 connected to the control unit 210 and the variables CB1, CB2, and CB3 corresponding to the upstream circuit breakers 52R, 52B2, and 52FG. The arrangement state of is shown. The shaded portion in FIG. 4B indicates a circuit breaker connected to the control unit 210. The same applies to FIG. 6B and FIG. 7B described later.

  In the example of the power path P1 in FIG. 4, the upstream circuit breakers 52R, 52B2, and 52FG2 are made to correspond to the variables CB1 to CB4. Accordingly, the variables CB1 to CB4 are selected from the variables CB1 to CB9.

  That is, as shown in FIG. 4B, since the upstream circuit breakers 52R, 52B2, and 52FG2 are connected in series, the setting formula: CB1 * CB2 * CB3 is established from the correspondence shown in FIG. 4A. . Accordingly, the variable CB1 corresponding to the circuit breaker 52R displayed in the variable display selection area α1 on the display screen 221 is input by the operator (specifically, the operator's input to the display position of the variable CB1 on the screen 221). After selection input (by touch operation) and input to the control unit 210 via a predetermined communication means (for example, RS485 communication), the variable CB1 is displayed in the input information display area α3. Next, the first logical symbol “*” of the product displayed in the symbol display selection area α2 of the display screen 221 is input by an operation (specifically, the display position of “*” on the screen 221 is touched). ) When selected, the symbol “*” is displayed next to the variable CB1 in the input information display area α3. Similarly, the variable CB2, the symbol “*”, and the variable CB3 are sequentially displayed in the input information display area α3. At this time, if an erroneous input is made, it can be re-input by an input operation to the display position of the erasing operation area α5.

  Then, in the state where the setting formula: CB1 * CB2 * CB3 is input, an input operation is performed to the display position of the finalized operation area α4, thereby confirming the setting formula.

  FIG. 5 is a conceptual diagram of the control of the control unit 210 that processes the setting formula input by the display input operation unit 220 when the circuit breaker 52G of the distributed power supply apparatus 100 is controlled to open and close.

  In the present embodiment, the control unit 210 stores the input setting formula in the storage unit 212, and the upstream circuit breaker switching state for determining the switching state of the upstream circuit breaker based on the parameter A. And a determination function F. In the control unit 210, after the setting formula (CB1 * CB2 * CB3 in the example of FIG. 4) input by the display input operation unit 220 is stored in the storage unit 212 as the parameter A, as shown in FIG. Then, it is substituted into the upstream circuit breaker switching state determination function F. Thus, the control unit 210 obtains the calculation result of the setting formula: CB1 * CB2 * CB3 input to the parameter A based on the switching signal (logic signal) S from the connected circuit breaker. It is possible to recognize whether or not power is supplied to the load L side (that is, power supply is not present when the operation result is “0”, and power is present when the operation result is “1”).

  6 is a schematic diagram illustrating another example of the arrangement state of the upstream circuit breaker and the circuit breaker 52G disposed immediately before the distributed power supply device 100 in the power path P (P2) illustrated in FIG. (A) shows the signal input correspondence table of the upstream circuit breakers 52S1, 52S2, 52HB, 52FG, and 52BG connected to the control unit 210 and the variables CB1, CB2, CB3, CB4, and CB5 corresponding thereto. (B) has shown the arrangement | sequence state of the circuit breaker in the electric power path | route P2.

  In the power path P2 of this example, the upstream circuit breakers 52S1, 52S2, 52HB, 52FG, and 52BG are made to correspond to the variables CB1 to CB5. Accordingly, the variables CB1 to CB5 are selected from the variables CB1 to CB9.

  6B, the upstream circuit breaker 52S1 is connected in parallel to the upstream circuit breakers 52S2 and 52HB connected in series, and the upstream circuit breakers 52FG and 52BG connected in series are connected in series. Therefore, the setting equation: (CB1 + CB2 * CB3) * CB4 * CB5 is established from the correspondence shown in FIG. Accordingly, similarly, the symbol “(”, variable CB1, symbol “+”, variable “CB2”, symbol “*”, variable CB3, symbol “)”, symbol “*”, variable CB4, symbol “*”, variable After the input operation of CB5 is performed in order, the setting formula: (CB1 + CB2 + CB3) * CB4 * CB5 is input, and the input operation is performed to the display position of the fixed operation area α4, thereby fixing the setting formula. As a result, the control unit 210 moves from the system power supply 300 to the load L side according to the calculation result of the setting formula: (CB1 + CB2 + CB3) * CB4 * CB5 calculated based on the switching signal (logic signal) S from the connected circuit breaker. It is possible to recognize whether or not power is being supplied (that is, no power supply when the operation result is “0”, and there is power supply when the operation result is “1”).

  Further, FIG. 7 is a schematic diagram illustrating still another example of the arrangement state of the upstream circuit breaker and the circuit breaker 52G disposed immediately before the distributed power supply device 100 in the power path P (P3) illustrated in FIG. 7 (a) shows a signal input correspondence table of the upstream circuit breakers 52S1, 52S2, 52B, 52GB2, 52GT, 52GB1 and variables CB1, CB2, CB3, CB4, CB5, CB6 corresponding to the upstream circuit breakers 52S1, 52S2, 52B, 52GB, 52GB. FIG. 7B shows an arrangement state of the circuit breakers in the power path P3.

  In the power path P3 of this example, the upstream circuit breakers 52S1, 52S2, 52B, 52GB2, 52GT, and 52GB1 are made to correspond to the variables CB1 to CB6. Accordingly, the variables CB1 to CB6 are selected from the variables CB1 to CB9.

  That is, as shown in FIG. 7B, the upstream circuit breaker 52B is connected in series to the upstream circuit breakers 52S2 and 52GB2 connected in parallel, the upstream circuit breaker 52S1 is connected in parallel thereto, and further connected in series thereto. Since the upstream circuit breakers 52GT and 52GB1 are connected in series, the setting formula: (CB1 + (CB2 + CB4) * CB3) * CB5 * CB6 is established from the correspondence shown in FIG. After the input operation is performed in the same manner, the setting formula: (CB1 + (CB2 + CB4) * CB3) * CB5 * CB6 is input, and the input operation is performed to the display position of the finalized operation area α4. Is done. As a result, the control unit 210 determines that the system power supply 300 is based on the calculation result of the setting formula: (CB1 + (CB2 + CB4) * CB3) * CB5 * CB6 calculated based on the switching signal (logic signal) S from the connected circuit breaker. It is possible to recognize whether or not power is being supplied from the power source to the load L side (that is, no power is supplied when the operation result is “0”, and there is power supply when the operation result is “1”).

It is a figure which shows an example of schematic structure of the electric power equipment provided with one Embodiment of the switching control apparatus which concerns on this invention. It is a block diagram which shows schematic structure of an opening / closing control apparatus. It is a figure which shows an example of the display screen of the display input part in the opening / closing control apparatus shown in FIG.1 and FIG.2. It is the schematic which shows an example of the arrangement | sequence state of the circuit breaker arrange | positioned just before the upstream circuit breaker and the distributed power supply device in the electric power path shown in FIG. 1, Comprising: (a) is an upstream circuit breaker connected to the control part. FIG. 5B is a diagram showing a signal input correspondence table of variables corresponding thereto, and FIG. 5B is a diagram showing an arrangement state of circuit breakers in the power path. It is a conceptual diagram of control of the control part which processes the setting type | formula input in the display input operation part in controlling opening / closing of the circuit breaker of a distributed power supply device. It is the schematic which shows the other example of the arrangement | sequence state of the circuit breaker arrange | positioned just before the upstream circuit breaker and the distributed power supply device in the electric power path shown in FIG. 1, Comprising: FIG. It is a figure which shows the signal input correspondence table | surface of the circuit breaker and the variable corresponding to it, and the figure (b) is a figure which shows the arrangement | sequence state of the circuit breaker in the electric power path | route. It is the schematic which shows the further another example of the arrangement | sequence state of the circuit breaker arrange | positioned just before the upstream circuit breaker and the distributed power supply device in the electric power path shown in FIG. 1, Comprising: (a) is connected to the control part. It is a figure which shows the signal input correspondence table | surface of an upstream circuit breaker and the variable corresponding to it, and the figure (b) is a figure which shows the arrangement | sequence state of the circuit breaker in the electric power path | route. It is a figure which shows an example of schematic structure of the conventional electric power equipment which performs a grid connection or a self-sustained operation with a distributed power supply device. It is the schematic which shows the arrangement | sequence state of the circuit breaker in the electric power path | route shown in FIG. 8, Comprising: FIG. (A) is a figure which shows the example, FIG. (B) is a figure which shows another example.

Explanation of symbols

52 upstream circuit breaker 52G circuit breaker 52R of distributed power supply 52R receiving circuit breaker 100 distributed power supply apparatus 200 switching controller 221 display screen 300 system power supply CB1 to CB9 variable P (P1 to P3) power path

Claims (2)

In a circuit breaker switching control device for a distributed power supply that performs grid connection or independent operation,
With respect to the arrangement information of the upstream circuit breaker arranged in the power path from the circuit breaker for receiving power from the system power supply to just before the circuit breaker of the distributed power supply device,
At least 4 to 9 variables prepared in advance so that an open / close signal corresponding to the open / close state of the upstream circuit breaker is input;
A first logic symbol meaning a series connection of the upstream circuit breakers;
A second logic symbol meaning a parallel connection of the upstream circuit breakers;
A configuration formula can be set by a delimiter that divides a part of the arrangement information of the upstream circuit breaker as a group of circuit breakers,
The circuit breaker of the distributed power supply apparatus performs switching control of the circuit breaker of the distributed power supply apparatus based on the open / closed state of the power path calculated from the switching signal of the upstream circuit breaker by the set setting formula Open / close control device. In the switching control device of the circuit breaker of the distributed power supply device according to claim 1,
Displaying the variable, the first logical symbol, the second logical symbol, and the delimiter symbol on a screen that can be input and operated,
The circuit breaker switching control device of the distributed power supply apparatus, wherein the arrangement information of the upstream circuit breakers to be set is displayed on the screen by a selection input operation to the screen.

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