JP2008017673A - Circuit breaker operation determination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit breaker operation determination system capable of preventing a failure in a power system by grasping, before operation, such an operation of the circuit breaker which likely causes a problem in the power system. <P>SOLUTION: The determination system comprises an open/close state memory means 5 which stores the open/close state of the circuit breaker in the power system, a premise condition memory means 4 which stores a premise condition that is a premise for permitting the operation of each circuit breaker, a simulated operation commanding means 1 for commanding the simulated operation of the circuit breaker for determining permission of the operation, and a determination means 2 which determines the permission of the operation of the circuit breaker by comparing the premise condition for the operation that has been compared with the open/close state of the circuit breaker that is stored in the open/close state memory means 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a circuit breaker operation determination system that determines whether or not a power circuit breaker can be operated in a power plant, power station, factory, or the like.

When opening and closing the circuit breaker in the power system, the operator reads the sequence diagram, etc., determines whether the preconditions for the circuit breaker operation to be performed will be satisfied, and predicts the ripple effect of the circuit breaker operation to determine whether the actual operation is possible Was judging. As described above, the switching operation of the circuit breaker in the power system depends on the experience and image ability of the operator.
In addition, in order to supplement the experience and image ability of the operator, there is known a power system simulation method that simulates an accident in the power system and trains the operation of the power system when a failure occurs (for example, Patent Document 1). reference).

Japanese Patent Laid-Open No. 5-199647

However, in power systems such as power plants, power stations, large-scale plants, etc., since the number of circuit breakers in the system is large, the effects of the second and third operations become complicated, and an inexperienced operator judges. It is difficult. For this reason, when the actual operation is performed in a state where the operator cannot recognize whether the preconditions for the circuit breaker operation are satisfied or whether the actual operation is possible, there is a possibility that problems such as a power failure and an accident may occur.
In addition, the simulation method described in Patent Document 1 is useful for training a recovery operation for a predictable power system failure. However, the simulation method can not only cope with an unforeseen trouble, but can also cause a problem in the power system. There has been a problem that it is impossible to grasp the operation of the vessel in advance and prevent the failure of the power system.

  Therefore, the present invention provides a circuit breaker operation determination system capable of grasping a circuit breaker operation that may cause a problem in the power system before the operation and preventing a failure of the power system.

  In order to solve the above-mentioned problem, the present invention provides an open / close state storage means for storing the open / close state of a circuit breaker in the power system, and a precondition storage means for storing a precondition as a premise of whether or not each breaker can be operated. The operation of the circuit breaker is compared by comparing the operation condition of the circuit breaker stored in the opening / closing state storage means with a simulated operation instruction means for instructing a simulated operation of the circuit breaker for determining whether or not the operation is possible. A circuit breaker operation determination system including determination means for determining availability is provided.

  Further, in the present invention, when the determination unit determines that the circuit breaker can be operated, the switching state storage unit replaces the switching state of the circuit breaker in the power system with the state after the operation. The circuit breaker operation determination system described in 1. is provided.

  Moreover, this invention provides the circuit breaker operation determination system of Claim 1 or 2 which made it display the location where preconditions are not satisfied, when the said determination means determines that operation of a circuit breaker is impossible. Is.

  Moreover, this invention provides the circuit breaker operation determination system in any one of Claim 1 thru | or 3 with which the said determination means was provided with the display means which displays the energization state in an electric power grid | system.

  In the present invention, the precondition storage unit includes a unit that stores a fixed condition such as an energized state in the power system or an open / closed state of the circuit breaker, and the determination unit includes a unit that determines whether the fixed condition is successful. The circuit breaker operation determination system according to any one of claims 1 to 4 is provided.

  The present invention also includes a control device that opens and closes a circuit breaker in an electric power system, wherein the simulation operation instruction means receives an actual operation signal input from the circuit breaker and instructs a simulation operation, and the determination means includes a circuit breaker. The circuit breaker operation determination system according to any one of claims 1 to 5, wherein when the operation is determined to be possible, the actual operation signal is output to the control device.

  According to the circuit breaker operation determination system according to the present invention, the open / close state storage means for storing the open / close state of the circuit breaker in the electric power system, and the precondition storage means for storing the preconditions on which each circuit breaker can be operated are stored. And a simulated operation instruction means for instructing a simulated operation of the circuit breaker for determining whether or not the operation is possible, and comparing the preconditions of the instructed operation with the open / close state of the breaker stored in the open / close state storage means. By having a configuration comprising judgment means for judging whether or not the operation is possible, even an inexperienced operator can quickly and surely grasp the establishment of the preconditions for the circuit breaker operation and the availability of the actual operation, and erroneous operation of the circuit breaker It is possible to prevent the occurrence of problems such as power outages and accidents in the power system.

  Further, in the present invention, when the determination unit determines that the circuit breaker can be operated, the switching state storage unit replaces the switching state of the circuit breaker in the power system with the state after the operation. By having the structure described in the above, there is an effect that it is possible to instruct whether or not to operate by instructing the next simulated operation in the opened / closed state of the circuit breaker after the operation.

  Further, the present invention provides the precondition by having the configuration according to claim 1 or 2, wherein the determination means displays a location where the precondition is not satisfied when it is determined that the operation of the circuit breaker is impossible. There is an effect that it is possible to easily grasp the location where the failure is not established.

  Moreover, this invention has the structure in any one of the Claims 1 thru | or 3 with which the said determination means was provided with the display means which displays the energization state in an electric power grid | system, The energization in the electric power grid | system after an operation There is an effect that the state can be grasped before actual operation.

  In the present invention, the precondition storage unit includes a unit that stores a fixed condition such as an energized state in the power system or an open / closed state of the circuit breaker, and the determination unit includes a unit that determines whether the fixed condition is successful. By having the configuration according to any one of claims 1 to 4, when it is necessary to fix the energized state or the open / close state of the circuit breaker for inspection and repair of the equipment in the system, it is ensured. There is an effect that the fixed state can be maintained.

  The present invention also includes a control device that opens and closes a circuit breaker in an electric power system, wherein the simulation operation instruction means receives an actual operation signal input from the circuit breaker and instructs a simulation operation, and the determination means includes a circuit breaker. When the actual operation signal of the circuit breaker is input by having the configuration according to any one of claims 1 to 5, wherein the actual operation signal is output to the control device when it is determined that the operation is possible. Therefore, it is possible to reliably prevent a circuit breaker operation that causes a problem in the power system because the actual operation signal is output to the control device and the circuit breaker is operated only when the operation is possible. is there.

Embodiments of the present invention will be described based on examples shown in the drawings.
The circuit breaker operation determination system according to the present invention includes an open / close state storage unit 5 that stores the open / close state of a circuit breaker in the power system, and a precondition storage unit 4 that stores a precondition that is a precondition for the operation of each circuit breaker. And the simulated operation instruction means 1 for instructing the simulated operation of the circuit breaker for determining whether or not the operation can be performed, and comparing the preconditions of the instructed operation with the open / close state of the circuit breaker stored in the open / close state storage means 5 It is comprised from the determination means 2 which determines the operation possibility of a container.

In the embodiment shown in FIG. 1, the circuit breaker operation determination system includes a simulated operation instruction means 1, a determination means 2, a display means 3, a precondition storage means 4, and an open / close state storage means 5.
As shown in FIGS. 5 and 6, the precondition storage unit 4 stores a precondition for the operation to be established for each operation content of each circuit breaker. The “+” symbol in the figure indicates an AND condition, and the operation on the right side of the arrow is established when the condition on the left side of the arrow is satisfied.

  As shown in FIG. 4, the open / close state storage means 5 stores circuit breaker data in the electric power system, and stores the open / close state (automatic on, automatic open, manual on, manual open, trip) of each circuit breaker. It is configured to be able to. In addition, when the determination unit 2 determines that the circuit breaker can be operated, the switching state storage unit 5 replaces the switching state of the circuit breaker in the power system with the state after the operation, so that the second and third simulations are performed. The operation can be determined.

  As shown in FIG. 4, the simulated operation instruction means 1 includes means for displaying operation details that can be operated for each circuit breaker, and selects the operation content of the circuit breaker to be operated from now on. It is comprised so that it can instruct | indicate.

The judging means 2 compares the preconditions for the operation instructed by the simulated operation instructing means 1 with the open / close state of the circuit breaker stored in the open / close state storage means 5, and operates the circuit breaker to be operated from now on. It is configured so that it can be determined. As shown in FIGS. 5 and 6, the determination means 2 includes means for displaying a precondition for the operation instructed by the simulated operation instruction means 1, and the precondition when the operation of the circuit breaker is determined to be impossible. It is made possible to display a place where is not established. Moreover, the determination means 2 is provided with a display means 3 for displaying the energization state in the power system, and can display the problem location together with the determination result.
Further, when the determination means 2 determines that the circuit breaker can be operated, the determination means 2 displays that effect so that the open / close state of the circuit breaker stored in the open / close state storage means 5 can be replaced with the state after the operation. is there.

  In the embodiment shown in FIG. 2, the circuit breaker operation determination system includes a control device 8 that opens and closes the circuit breaker in the power system, and the simulated operation instruction means 1 receives the actual operation signal of the circuit breaker and performs a simulated operation. When the determination means 2 determines that the circuit breaker can be operated, an actual operation signal can be output to the control device 8. The breaker operation determination system can be provided by being incorporated in a plant computer that manages the plant, and the open / close state storage means 5 can update the open / close state of each breaker according to the actual operation signal of the control device 8. is there.

  As shown in FIG. 2, the precondition storage unit 4 is provided with a fixed condition storage unit 6 that stores a fixed condition such as an energized state in the power system or an open / close state of the circuit breaker. The fixed condition storage means 6 is provided with a fixed condition input means 7 for inputting a place where it is necessary to fix the energized state or the open / closed state of the circuit breaker for inspection / repair of the circuit breaker or the electric device. I can do it.

The determination means 2 includes means for determining whether or not a fixed condition is met. When it is determined that the precondition is satisfied, the circuit breaker switching state replaced with the post-operation state and the fixed condition storage means 6 are stored. The fixed conditions can be compared to determine whether the fixed conditions are successful. The determination means 2 outputs an actual operation signal to the control device 8 when it is determined that the fixed condition is satisfied, and the display means 3 displays the problem location together with the determination result when it is determined that the fixed condition is not satisfied. It is.
In the embodiment shown in FIG. 2, the configuration other than the above is the same as the configuration of the first embodiment.

Next, the operation of the circuit breaker operation determination system shown in FIG. 2 will be described with reference to FIG.
When the simulated operation instruction unit 1 receives an input of a simulated operation or an actual operation signal of a circuit breaker, the determination unit 2 is instructed to perform the simulated operation. The determination means 2 reads the circuit breaker open / close state and precondition from the open / close state storage means 5 and the precondition storage means 4 and compares the precondition and the open / close state to determine whether the circuit breaker can be operated. When the determination unit 2 determines that the precondition is not satisfied, the determination unit 2 displays a location where the precondition is not satisfied on the display unit 3.

  On the other hand, when the determination unit 2 determines that the precondition is satisfied, the determination unit 2 replaces the open / close state of the circuit breaker stored in the open / close state storage unit 5 with the state after the simulation operation, and sets the fixed condition from the fixed condition storage unit 6. The open / closed state after reading and replacement is compared with the fixed condition to determine whether the fixed condition is successful. When the determination unit 2 determines that the fixed condition is not established, the determination unit 2 displays a location where the fixed condition is not established on the display unit 3, and when it is determined that the fixed condition is established, displays a determination result indicating that the breaker operation is possible. At this time, when the simulated operation instruction unit 1 receives an actual operation signal of the circuit breaker, the determination unit 2 outputs the actual operation signal to the control device 8 to execute the circuit breaker operation.

  With the circuit breaker operation determination system shown in FIG. 2, it is possible to quickly and reliably grasp the success or failure of the preconditions for circuit breaker operation, and when a circuit breaker operation is performed, other circuit breakers can be automatically turned on or opened automatically. It is possible to confirm whether the fixed condition is not changed by executing.

The block diagram which shows one Example of the circuit breaker operation determination system which concerns on this invention. The block diagram which shows the other Example of the circuit breaker operation determination system which concerns on this invention. The flowchart which shows the operation | movement of the one Example. The figure which shows one Example of the simulation operation instruction | indication means. The figure which shows an example of a precondition. The figure which shows an example of a precondition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Simulated operation instruction means 2 Judgment means 3 Display means 4 Precondition storage means 5 Opening / closing state storage means 6 Fixed condition storage means 7 Fixed condition input means 8 Controller

Claims (6)

  Open / close state storage means for storing the open / close state of the circuit breakers in the power system, precondition storage means for storing preconditions for preconditions for the operation of each circuit breaker, and simulated operation of the circuit breaker for determining whether or not to operate Circuit breaker operation comprising simulated operation instruction means for instructing, and determination means for comparing the circuit breaker opening / closing state stored in the opening / closing state storage means to determine whether the circuit breaker can be operated or not Judgment system.   2. The circuit breaker operation according to claim 1, wherein when the determination unit determines that the circuit breaker can be operated, the switching state storage unit replaces the switching state of the circuit breaker in the power system with a state after the operation. Judgment system.   The circuit breaker operation determination system according to claim 1 or 2, wherein when the determination unit determines that the operation of the circuit breaker is impossible, the location where the precondition is not satisfied is displayed.   The circuit breaker operation determination system according to any one of claims 1 to 3, wherein the determination unit includes a display unit that displays an energization state in the power system.   The precondition storage unit includes a unit that stores a fixed condition such as an energized state in a power system or a switching state of a circuit breaker, and the determination unit includes a unit that determines whether the fixed condition is successful. The circuit breaker operation determination system according to any one of 4. A control device that opens and closes a circuit breaker in an electric power system, wherein the simulation operation instruction means receives an actual operation signal of the circuit breaker and instructs a simulation operation, and the determination means determines that the circuit breaker can be operated The circuit breaker operation determination system according to any one of claims 1 to 5, wherein the actual operation signal is output to the control device when the operation is performed.

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