JP5459709B2 - Design support method, design support apparatus, and design support program for electric power equipment - Google Patents

Description

  The present invention relates to a design support method, a design support apparatus, and a design support program for a power device, and is particularly useful when applied to the design of a container for a power device in which arc discharge occurs due to a ground fault, a short-circuit accident, or the like. is there.

  In various types of power equipment used in a state close to space, there is a concern that sudden internal pressure that may cause various public disasters may occur when an arc short circuit occurs. Therefore, when developing power equipment such as switchboards, transformers, gas insulated lines, etc., in which arc discharge occurs due to ground faults, short circuit accidents, etc., pressure generated in the container of the power equipment due to the occurrence of arcs Container design that assumes

  In the development and design of this type of power equipment container according to the prior art, the pressure resistance design etc. is performed on the assumption that the pressure in the container increases in proportion to the arc energy obtained from the assumed arc current and arc voltage. .

  Incidentally, Patent Document 1 describes that “the pressure increase due to the arc is proportional to the arc energy (refer to page 2, left column, lines 9 to 10 in the upper column”). Describes that “the pressure increase value due to the arc is proportional to the current (see paragraphs [0030] and [0031]).” Further, Patent Document 3 states that “the pressure vibration in the container is caused by a resonance phenomenon. (See paragraph [0011]).

JP 59-41106 A JP-A-6-289090 JP 9-168214 A

  On the other hand, the inventors of the present application have been studying the effects of the arc current value, the electrode gap length, etc. in a certain closed container size, aiming at the elucidation of the characteristics regarding the internal pressure increase due to the arc and the establishment of the evaluation method.

  As part of this characteristic elucidation, the increase in internal pressure when the closed container size was changed was examined. Generally, the larger the size of the sealed container, the smaller the internal pressure rise value if the other conditions are the same. However, depending on the volume and shape of the sealed container, a larger pressure rise than expected is generated. I have found that there are cases.

  Therefore, the conventional design method that performs pressure resistance design etc. on the assumption that the pressure in the container also increases in proportion to the arc energy obtained from the assumed arc current and arc voltage may not always be rational, In such a case, a proposal for a more appropriate design method is required.

  At the same time, it is considered that the present invention can be applied to a rational design even in an application in which a pressure based on arc energy is positively used, for example, when the arc is extinguished.

  In view of the above-described conventional technology, the present invention is a power device for rational design of a power device including a container design based on the characteristics of pressure change in the container using an generated arc as an energy source. An object of the present invention is to provide a design support method, a design support apparatus, and a design support program.

  The present invention is based on the knowledge obtained as a result of examining the pressure increase in the container when the size of the sealed container is changed while the arc current value and the electrode conditions are constant. That is, when the closed vessel volume is increased with the arc energy constant, the maximum internal pressure rise basically decreases to the same extent as the increase in volume, but under certain specific conditions, It has been found that the amplitude of the vibration waveform of the pressure increase becomes relatively large and larger than expected from the degree of increase in volume.

  Therefore, a plurality of types of arcs having different energies are generated in a container having a predetermined volume, and a pressure characteristic representing a temporal pressure change at a specific position in the container in this case is detected, and vibration amplitude and vibration in each pressure characteristic are detected. When the ratio to the center was obtained, it was found that the characteristic of the ratio with respect to the arc energy had a maximum value. Therefore, it is considered that a rational container design can be performed so that the rise in pressure in the container does not increase rapidly by setting an appropriate value while avoiding the arc energy that gives the maximum value as described above. On the other hand, there is a case where the arc energy is actively used in this type of electric power equipment. In such a case, however, a rational design can be obtained by obtaining the arc energy near the maximum value. Can be done.

  Based on such knowledge, the first aspect of the present invention is the generation of a specific position in the container by a plurality of types of arcs that are generated based on electric power and are different in energy and are maintained for the same time at a predetermined position in the container in which the power equipment is stored. Finding the ratio between the vibration amplitude and the vibration center of each pressure characteristic in a specific period or moment based on the pressure characteristic representing the temporal pressure change, obtaining the maximum value of the ratio in the characteristic representing the ratio to the energy, The power equipment design support method is characterized in that the power equipment including the container is designed using the maximum value.

  According to this aspect, since the power device including the container is designed using the maximum value of the ratio between the vibration amplitude and the vibration center of each pressure characteristic based on a plurality of types of arc energy, the case of the container Therefore, it is possible to easily avoid the arc condition that gives the maximum value and to design a rational container.

  On the other hand, it is also possible to positively use arc energy that gives a maximum value. For example, when the pressure generated by the arc is used for extinguishing the arc, a predetermined design of the power device may be performed in the vicinity of the arc condition that gives the maximum value.

  Here, each of the pressure characteristics can be obtained by calculating the pressure at the specific position by generating the simulated energy of the arc that gives the pressure characteristics at the predetermined position where the generation of the arc is assumed. it can.

  In this case, since it is not necessary to obtain the pressure at a specific position by experiment, it is possible to realize a rational container design at that speed and at a low cost. By the way, this type of experiment requires a great deal of cost and time, and there are cases where a desired experiment cannot be performed due to restrictions on the experimental equipment.

  Further, it is preferable that the specific period or instant is a period or instant including the end of the duration of each arc.

  In this case, since the information at the moment when the pressure rises most can be used, the characteristic of the ratio can be obtained with high accuracy and good quality accordingly.

  According to a second aspect of the present invention, the temporal pressure at a specific position in the container is generated by a plurality of types of arcs that are generated based on electric power at different positions in the container that houses the power equipment and that have different energy and last for the same time. First, a ratio between a vibration amplitude and a vibration center of each pressure characteristic in a specific period or moment is obtained based on a pressure characteristic representing a change, and information representing the ratio is output together with information representing the corresponding energy. And a second calculation means for obtaining a maximum value of the ratio with respect to the energy based on the information indicating the ratio and the information indicating the energy. It is in.

  According to this aspect, since the ratio between the vibration amplitude that gives the maximum value and the vibration center is known, when the design target is the container, the design is such that the arc condition that generates the energy that gives the ratio is avoided. By doing this, it is possible to suppress an unexpected pressure increase in the container and contribute to a rational container design.

  On the other hand, when the arc energy that gives the maximum value is actively used, for example, when the pressure generated by the arc is used for extinguishing the arc, a predetermined value of the electric power device is set near the arc condition that gives the maximum value. Design should be done.

  Here, information on parameters for specifying the container, information representing the energy of the arc that gives the pressure characteristics, information representing the duration of the arc, and a predetermined position in the container assuming the occurrence of each arc. Information representing each pressure characteristic by calculating each pressure characteristic representing a temporal pressure change at the specific position by energy of each arc given to the predetermined position based on information representing and information representing the specific position The first calculation means obtains a ratio between the vibration amplitude and the vibration center of each pressure characteristic at a specific moment based on information representing each pressure characteristic. In addition, information representing the ratio can be output together with information representing the energy corresponding to the ratio.

  In this case, pressure characteristics related to a plurality of arc energies can be obtained by calculation (simulation) simply by inputting predetermined basic information such as information on parameters for specifying the container to the third calculation means. Therefore, it is not necessary to experimentally determine the pressure at a specific position, and a rational container design can be realized at that speed and at a low cost. Incidentally, this type of experiment is very expensive and time consuming, and is similar to the above-described case in that a desired experiment may not be performed due to restrictions on the experimental equipment.

  Further, the specific period or moment is preferably a period or moment including an end of the duration of each arc.

  In this case, since the information at the moment when the pressure rises most can be used, the characteristic of the ratio can be obtained with high accuracy and good quality accordingly.

  According to a third aspect of the present invention, a temporal pressure at a specific position in the container is generated by a plurality of types of arcs that are generated based on electric power at a predetermined position in a container that houses a power device and that has different energy and lasts the same time. A first processing step for causing an electronic calculator to calculate a ratio between a vibration amplitude and a vibration center of each pressure characteristic in a specific period or moment based on a pressure characteristic representing a change; and a characteristic representing the ratio to the energy And a second processing step for causing a computer to calculate the maximum value of the ratio.

  According to this aspect, not only can the unexpected pressure rise in the container be suppressed and contribute to rational container design, but also when the arc energy is actively used, the vibration amplitude that gives the maximum value and Since the ratio to the vibration center can be calculated by an electronic computer, desired information in this case can be obtained quickly and inexpensively.

  Here, information on parameters for specifying the container, information representing the energy of the arc that gives the pressure characteristics, information representing the duration of the arc, and a predetermined position in the container assuming the occurrence of each arc. Each pressure characteristic is calculated by causing a computer to calculate each pressure characteristic representing a temporal pressure change at the specific position by the energy of each arc given to the predetermined position based on the information representing and the information representing the specific position. It is desirable to further include a third processing step for outputting information representing the above as input information for the first processing step.

  In this case, the pressure characteristics that are the basis for determining the ratio between the vibration amplitude of each pressure characteristic and the vibration center can also be obtained by calculation using an electronic computer. This is because it is possible to cause the electronic computer to calculate the ratio between the vibration amplitude and the vibration center that gives a maximum value that can contribute to a typical container design more quickly and inexpensively. As a result, the desired information in this case can be obtained more quickly and inexpensively.

  According to the present invention, it is possible to design a power device including a container in consideration of the value of arc energy at which the vibration amplitude of the pressure increase in the container suddenly increases. Energy can be set to an appropriate value. As a result, when the design object is a container, it can contribute to the design of a rational container that suppresses the pressure rise as much as possible. That is, in consideration of the pressure increase for each arc energy, by setting the arc energy to an appropriate value, the pressure increase in the container can be suppressed. For example, power equipment such as switchboards, transformers, gas insulated lines, etc. It can greatly contribute to optimization of design and cost reduction of the equipment.

  On the other hand, it is also possible to positively use arc energy that gives a maximum value. For example, the pressure generated by the arc can be used for extinguishing the arc. In this case, the most efficient use of arc energy can be realized by performing a predetermined design of the electric power device in the vicinity of the arc condition that gives the maximum value.

It is explanatory drawing which shows an example of the container of the electric power apparatus constructed | assembled in order to acquire the basic information of the various characteristics of this invention. It is a block diagram which shows the design support apparatus of the container of the electric power equipment which concerns on embodiment of this invention. It is a graph which shows the pressure characteristic which is a time change of the pressure in the specific position in a container when the arc of specific energy is generated. It is a graph which shows the ratio of the average value of the vibration amplitude in a specific period, and the average value of a vibration center of the pressure characteristic in the specific position in a container regarding each arc energy. It is a graph which shows the average value in the specific period of the pressure characteristic in the specific position in a container regarding each arc energy. It is a graph which shows the average value of the vibration amplitude in the specific period of the pressure characteristic in the specific position in a container regarding each arc energy.

  Hereinafter, embodiments of the present invention will be described in detail. Although the present embodiment will be described with respect to the case where the design target is a container of a power device, it is not necessary to be limited to this. It can be widely applied to the design of each part of electric power equipment that generates an arc in a sealed container.

FIG. 1 is an explanatory diagram conceptually showing a container of a power device that is a target of design support according to this embodiment. As shown in the figure, the container I stores power equipment having the possibility of arc discharge inside, for example, elements constituting a switchboard, a transformer, a gas insulated line, and the like. The container I in the present embodiment is formed by making two cylinders having a diameter of 0.496 m orthogonal to each other, has a volume of 0.52 m ^3, and has a plurality of different sizes generated at a predetermined position A by AC power of commercial frequency. This is for simulating the kind of arc energy and simulating the pressure characteristic which is the time characteristic of the pressure generated at the specific position B in the container I in this case. Of course, the shape and volume of the container I are not limited to those shown in FIG.

FIG. 2 is a block diagram showing a design support apparatus for a container of a power device according to an embodiment of the present invention. As shown in the figure, the input device 1 includes information on parameters for specifying the container I to be designed (the shape, dimensions and volume (parameters shown in FIG. 1) of the container I, etc.), Represents information representing the energy of each arc that generates a plurality of types of pressure, information representing the duration of each arc (same between each arc), and a predetermined position A in the container I assuming the occurrence of each arc. Information and information indicating the specific position B are input, and each input information is sent to the pressure characteristic calculation unit 2. In this embodiment, an arc having a duration of 0.1 sec is input with respect to five types of energy of 95 (kJ), 252 (kJ), 475 (kJ), 713 (kJ), and 951 (kJ). I made it. Further, the arc energy in this case simulates that given by an alternating current having a frequency of 50 Hz, and the arc energy obtained by multiplying the arc energy by a predetermined coefficient k _p is inputted to the predetermined position A.

  The pressure characteristic calculation unit 2 calculates each pressure characteristic representing a temporal pressure change at the specific position B based on energy of each arc applied to the predetermined position A based on each information input from the input device 1 to calculate each pressure. Outputs information indicating characteristics. An example of the pressure characteristic obtained by the pressure characteristic calculation unit 2 is shown in FIG. This figure shows the case where the energy is 475 (kJ).

As shown in FIG. 3, the pressure characteristic indicates a characteristic in which the vibration center P _MEAN rises linearly while oscillating at a period T _osc caused by a pressure wave reciprocally reflected in the container I. Here, in order to avoid complications in the figure, illustration of pressure characteristics at each energy other than 475 (kJ) is omitted, but similar pressure characteristics were obtained with respect to other energies. That is, the vibration center P _MEAN rises linearly while oscillating at a period caused by a commercial alternating current (50 (Hz)). Here, as a matter of course, the linear rise characteristic of the vibration center _PMEAN becomes a steep characteristic as the arc energy increases, but the amplitude initially increases as the arc energy increases. A simulation result was obtained that the arc energy became smaller as the arc energy increased. Similar results were obtained in experiments conducted under the same conditions as in the simulation. Then, it came to the idea to compare the ratio between the vibration amplitude P _AMP and the vibration center P _MEAN in the pressure characteristics for each arc energy.

The vibration amplitude / vibration center calculation unit 3 shown in FIG. 2 is a vibration of each pressure characteristic in a specific period or moment based on each pressure characteristic (five types in the case of this embodiment) regarding each arc output from the pressure characteristic calculation unit 2. A ratio (P _AMP / P _MEAN ) between the amplitude and the vibration center is obtained, and information representing the ratio (P _AMP / P _MEAN ) is output together with information representing the corresponding arc energy. Here, there is no particular limitation on the specific period or moment, but the period or moment including the end of the duration of each arc is optimal. In this case, the data of the period during which the pressure rises most can be used, and accordingly, the characteristic of the ratio (P _AMP / P _MEAN ) can be obtained with high accuracy and appropriateness. In the case of the present embodiment, the specific period is set to 0.09 sec to 0.11 sec in the pressure characteristics corresponding to each arc energy. The specific period includes 0.1 sec, which is the arc duration in this embodiment. Here, the ratio (P _AMP / P _MEAN ) need not be limited to a specific period. It is also possible to use values of the vibration amplitude P _AMP and the vibration center P _MEAN at a specific moment (most preferably the end of the duration of the arc giving the maximum pressure).

The maximum value calculation unit 4 corresponds to information indicating the ratio (P _AMP / P _MEAN ) between the vibration amplitude and the vibration center, which is the output of the vibration amplitude / vibration center calculation unit 3, and each ratio (P _AMP / P _MEAN ). Based on the information representing energy, the maximum value of the ratio (P _AMP / P _MEAN ) for each energy is obtained, and information on this maximum value is output to the output display unit 5.

The output display unit 5 is a graph representing the characteristic of the ratio (P _AMP / P _MEAN ) with respect to each arc energy as well as the arc energy information giving the maximum value and the result of the predetermined information processing in the vibration amplitude / vibration center calculation unit 3. Is visualized as

FIG. 4 is a graph showing the characteristics visualized and displayed on the output display unit 5. As shown in the figure, in the graph, the horizontal axis represents the value of each energy, and the vertical axis represents the ratio (P _AMP / P _MEAN ) between the vibration amplitude P _AMP and the vibration center P _MEAN . Therefore, the designer of the container I can know the maximum value of the pressure by referring to the graph, and can also visually recognize the characteristic (graph shape) of the ratio (P _AMP / P _MEAN ) in this case. .

  As a result, according to the present embodiment, the container I can be designed in consideration of the value of arc energy at which the vibration amplitude of the pressure increase in the container I rapidly increases. That is, the arc energy obtained from the arc current and arc voltage can be set to an appropriate value by performing a design that avoids the arc condition that gives the energy. As a result, it is possible to support the rational design of the container I that suppresses the pressure rise as much as possible.

  Here, the results of the basic experiments and simulations performed in constructing the power equipment container design support apparatus according to the present invention realized in the embodiment as described above will be described.

  In this basic experiment, a plurality of types of arcs having a predetermined energy were generated at a predetermined position A of the container I shown in FIG. 1, and a plurality of pressure characteristics were obtained by detecting the pressure characteristics at a specific position B with a pressure sensor. A similar condition was also simulated. The conditions of such experiments or simulations are, for example, considering accident conditions in actual equipment such as a switchboard. As described above, the characteristics shown in FIGS. 3 and 4 can be obtained in the simulation.

Here, the dependence of the vibration center P _{MEAN on} the arc energy is further investigated. The result is shown in FIG. The figure shows the characteristic of the average value in the period of 0.09 sec to 0.11 sec in the pressure characteristic corresponding to the arc energy as in the above embodiment.

Referring to FIG. 5, it can be seen that the vibration center _PMEAN increases almost in proportion to the increase in arc energy. Here, white circles in the figure are experimental results (experiment was conducted for only three types of 95 (kJ), 252 (kJ), and 475 (kJ) for convenience of equipment; the same applies hereinafter). The simulation results are almost the same.

On the other hand, the dependence of the vibration amplitude P _{AMP on} the arc energy is as shown in FIG. This figure is also an average value of a period of 0 sec to 0.11 sec in the pressure characteristic corresponding to each arc energy. Referring to FIG. 6, it can be seen that the vibration amplitude P _AMP is not proportional to the increase in arc energy, but may increase rapidly or slightly depending on the value of arc energy. Here, the white circles in the figure are the experimental results, which almost coincide with the simulation results of the black circles.

  With reference to the results of FIG. 5 and FIG. 6, it is considered that the actual phenomenon is accurately reflected even if the pressure characteristics shown in FIG. 3 are obtained by calculation (simulation). Therefore, according to the power equipment design support apparatus shown in FIG. 2, it is possible to perform a simulation that accurately reflects an actual phenomenon.

  As a result, it is understood that it is reasonable to use simulation when obtaining information for the design support. This is because the experiment requires a great amount of time and money, and the experiment may not be performed due to limitations of the experimental equipment.

As a result of the above, when designing a container I of a power device that may generate an arc inside, it is necessary to estimate the mechanical strength that can withstand the occurrence of an arc due to a ground fault or short circuit accident. Therefore, it became clear that it is important to grasp the ratio (P _AMP / P _MEAN ) of the vibration amplitude _AMP to the vibration center P _MEAN of the pressure generated by the arc. That is, according to the characteristic indicative of an arcing energy dependence of the ratio in FIG. _{4 (P AMP / P MEAN)} , increases with increasing arc energy ratio _{(P AMP /} P _MEAN) is, the arc energy is 475 (kJ) In some cases, the maximum value is shown, and at higher arc energy, it decreases slightly. Considering the characteristics of this ratio (P _AMP / P _MEAN ), the ratio (P _AMP / P _MEAN ) can be kept small if the arc energy is set not to be about 475 (kJ). For example, if the arc energy is set to 252 (kJ), it can be reduced to about ½ of the ratio (P _AMP / P _MEAN ) when the arc energy is 475 (kJ). Further, as can be seen from FIG. 5, the vibration center P _MEAN can also be reduced to about ½. Thus, in order to set the arc energy low, it is necessary to keep the arc current and arc voltage low. In order to keep the arc current low, for example, it is conceivable to use a current limiting device. In order to keep the arc voltage low, for example, it is conceivable to shorten the distance between conductors that may cause a ground fault or a short circuit accident.

  In the above-described embodiment, the case where commercial AC power is used as power for generating an arc has been described. However, the present invention can be similarly applied to DC power.

In the above embodiment, each pressure characteristic is obtained by calculation by the pressure characteristic calculation unit 2. However, at least the vibration amplitude / vibration center calculation unit 3 and the maximum value calculation unit 4 are provided. For example, the desired arc energy that gives the maximum value of the ratio (P _AMP / P _MEAN ) can be known. In this case, the vibration amplitude / vibration center calculation unit 3 separately prepares the same information as the output information obtained as a result of the predetermined calculation by the pressure characteristic calculation unit 2 in the above embodiment, and the vibration amplitude / vibration center calculation unit It is necessary to input to 3. The output information obtained as a result of the predetermined calculation by the pressure characteristic calculation unit 2 generates, for example, a plurality of types of arcs of a predetermined energy at a predetermined position A of the container I, and the pressure at a specific position B by each arc at this time is a pressure. It can be obtained by measuring with a sensor.

  In addition, the functions of the vibration amplitude / vibration center calculation unit 3 and the maximum value calculation unit 4 or the pressure characteristic calculation unit 2, the vibration amplitude / vibration center calculation unit 3 and the maximum value calculation unit 4 in the above embodiment are programmed in the computer program. In this case, the computer equipped with the program can be substantially constructed as a design support apparatus for a container of a power device according to the above embodiment, that is, a simulator.

In the above-described embodiment, the case where the maximum value of the ratio (P _AMP / P _MEAN ) is detected and the container is designed with energy that avoids the arc energy that gives this maximum value has been described. It is also conceivable that the resulting pressure is actively used for arc extinction in a circuit breaker or the like. In this case, the power device may be designed so that arc energy near the maximum value can be used.

  INDUSTRIAL APPLICABILITY The present invention can be effectively used in an industrial field in which a container for a power device that may generate an arc inside is designed, manufactured, and sold.

I container 2 pressure characteristic calculation unit 3 vibration amplitude / vibration center calculation unit 4 maximum value calculation unit A predetermined position B specific position P _AMP vibration amplitude P _MEAN vibration center (P _AMP / P _MEAN ) ratio

Claims (8)

It is generated on the basis of power at a predetermined position in a container for storing electric power equipment, and energy is different, and is specified based on a pressure characteristic representing a temporal pressure change at a specific position in the container due to a plurality of types of arcs that last for the same time Obtain the ratio of the vibration amplitude and vibration center of each pressure characteristic in the period or moment,
A power device design support method, wherein a maximum value of the ratio in the characteristic representing the ratio to the energy is obtained, and the power device including the container is designed using the maximum value. In the electric power equipment design support method according to claim 1,
Each of the pressure characteristics is obtained by calculating the pressure at the specific position by simulating the energy of the arc giving the pressure characteristics at the predetermined position where the arc is assumed to be generated. Design support method for electric power equipment. In the power equipment design support method according to claim 1 or 2,
The specified period or moment is a period or moment including the end of the duration of each arc. It is generated on the basis of power at a predetermined position in a container for storing electric power equipment, and energy is different, and is specified based on a pressure characteristic representing a temporal pressure change at a specific position in the container due to a plurality of types of arcs that last for the same time. A first computing means for obtaining a ratio between a vibration amplitude and a vibration center of each pressure characteristic in a period or an instant, and outputting information representing the ratio together with information representing the energy corresponding thereto;
2. A power equipment design support apparatus comprising: a second computing unit that obtains a maximum value of the ratio with respect to the energy based on the information representing the ratio and the information representing the energy. In the design support apparatus of the electric power equipment described in Claim 4,
Information relating to parameters for specifying the vessel, information representing the energy of the arc giving each pressure characteristic, information representing the duration of the arc, information representing a predetermined position in the vessel assuming the occurrence of each arc, and Based on the information representing the specific position, each pressure characteristic representing the temporal pressure change at the specific position is calculated based on the energy of each arc applied to the predetermined position, and information representing the pressure characteristic is output. A third computing means;
The first calculation means obtains a ratio between the vibration amplitude and the vibration center of each pressure characteristic at a specific moment based on the information representing each pressure characteristic, and the information representing the ratio corresponds to each of the information A power equipment design support apparatus characterized by being configured to output together with information representing energy. In the electric power equipment design support apparatus according to claim 4 or claim 5,
The power device design support apparatus characterized in that the specific period or moment is a period or moment including the end of the duration of each arc. It is generated on the basis of power at a predetermined position in a container for storing electric power equipment, and energy is different, and is specified based on a pressure characteristic representing a temporal pressure change at a specific position in the container due to a plurality of types of arcs that last for the same time. A first processing step for causing an electronic calculator to calculate a ratio between a vibration amplitude and a vibration center of each pressure characteristic in a period or moment;
And a second processing step for causing a computer to calculate a maximum value of the ratio in the characteristic representing the ratio to the energy. In the electric power equipment design support program according to claim 7,
Information relating to parameters for specifying the vessel, information representing the energy of the arc giving each pressure characteristic, information representing the duration of the arc, information representing a predetermined position in the vessel assuming the occurrence of each arc, and Information representing each pressure characteristic by causing an electronic calculator to calculate each pressure characteristic representing a temporal pressure change at the specific position by the energy of each arc applied to the predetermined position based on the information representing the specific position. Is further output as input information of the first processing step, and the power equipment container design support program.