JPH0719009Y2 - Data processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a data processing device, and in particular, collects a terminal voltage at a customer of a distribution line by sample measurement, and processes data in a predetermined format based on the collected voltage. Regarding the device.

[Conventional technology]

Distribution line consumers such as general households and factories regularly measure the terminal voltage on the distribution line and check and manage the voltage fluctuations.Based on this, a measurement record arrangement sheet is prepared and based on the Electricity Business Act. It is generally reported to the Ministry of International Trade and Industry.

To measure the terminal voltage on this distribution line, use 1
Connect the measuring device set to rotate once a day to either the output side of the columnar transformer in the distribution line or the input side of the retractable switch, and record the voltage fluctuation for 24 hours a day on the recording paper. Is normal. At the time of completing this measurement, remove the measuring instrument, remove the recording paper from the measuring instrument and attach it to the measurement record rearrangement sheet, then read the voltage fluctuation from the voltage waveform drawn on the recording paper and use it as the rearrangement sheet. The numbered sheet is prepared by filling in the data according to the provided items.

Further, in recent years, along with the computerization of measuring instruments, data processing for executing voltage sample measurement by a digital method has been adopted. This is to measure instantaneously the terminal voltage of the distribution line by sampling for 1 second or 1 minute, store the measured instantaneous value in RAM memory, and take out the above measured data from this RAM memory as appropriate and process the data with a personal computer. is doing.

[Problems to be solved by the device]

By the way, in the terminal voltage measurement using the above-mentioned discharge type round recording paper, since the measuring instrument equipped with the recording paper is large and heavy due to its mechanism, it is set on the distribution line at a high place such as the output side of the pillar transformer. The work to do is also very difficult, and because it is necessary to adjust the measuring instrument before using it,
The handling including the adjustment work was complicated and the workability was poor. In addition, when the above-mentioned recording paper is mounted on the measuring instrument, a mounting error such as a positional deviation is likely to occur, and a defect such as a missing recording may occur, which makes it difficult to perform highly accurate measurement.
Furthermore, since the above terminal voltage measurement is analog recording, it is difficult to read the voltage fluctuation from the voltage characteristics drawn on the recording paper that has been measured, and the visual reading error is large. Filling out the columns on the numbered sheet was also a cumbersome task.

Next, in the terminal voltage sample measurement by the digital method, there is no problem as described above, but if instantaneous value is measured by sampling for 1 second, if you try to record the voltage fluctuation for 24 hours a day, it will be a large amount of data. Requires a large memory capacity. Further, when the instantaneous value is measured by 1-minute sampling, the sampling interval is large, so that it is not possible to record the instantaneous voltage fluctuation, and there is a problem that accurate measurement data of the voltage fluctuation cannot be obtained.

Therefore, the present invention has been proposed in view of the above problems, and an object of the present invention is to provide a data processing device which facilitates simplification and high accuracy of terminal voltage sample measurement on a distribution line by a digital method. To provide.

[Means for Solving the Problems]

The technical means for achieving the above object in the present invention is to preset the start time of the voltage or current sample measurement on the wire to be measured and to set the voltage or current for 1 second with initial data set and input. The effective value is measured by sampling, the average value for 1 minute based on this sample measured value is arithmetically processed and stored as measurement data for every 1 minute, and the voltage or current of the current is measured based on the sample measured value for 1 second sampling. A data storage device that calculates the maximum value of fluctuation range and its generation time, and compresses and records the above-mentioned measured data and data items including the maximum value of fluctuation range and its generation time in the memory medium described later, and is removable from the data storage device. The measurement start time attached to the
A memory medium that stores and holds data items including initial data and measurement data, the maximum value of fluctuation range, and the time of occurrence thereof by a rewrite prevention program, and measurements collected from a data storage device via the memory medium. It is a data processing device comprising: a data arithmetic processing unit which calculates a maximum value, a minimum value and its generation time within a predetermined period based on data and processes the data together with other data items.

[Action]

When performing a voltage or current sample measurement on an electric wire to be measured using the data processing device according to the present invention, the voltage or current is sampled for 1 second by the data memory while the data memory is connected to the electric wire to be measured. The effective value is measured with, the average value for 1 minute based on this sample measured value is calculated and stored as measurement data for every 1 minute, and the current or voltage of the current or voltage is calculated based on the sample measured value for 1 second sampling. The maximum value of the fluctuation range and its occurrence time are calculated. In this data storage device, the amount of data is reduced by compressing and recording the measurement data, and since it is based on the sample measurement value obtained by 1 second sampling, it is possible to track and grasp even an instantaneous variation.

Next, the measurement start time and initial data preset and input to the data storage unit are transferred to the memory medium together with the measurement data stored and held in the data storage unit and the maximum value of the fluctuation range and the generation time thereof. In this memory medium, the measurement start time, the initial data, the measurement data, the maximum value of the fluctuation range and the generation time thereof are stored and held by the rewriting prevention program to collect data.

Then, the measurement data collected in the memory medium is arithmetically processed by the data arithmetic processor, and the maximum value, the minimum value and the generation time thereof within a predetermined period are output together with other data items.

〔Example〕

Embodiments of a data processing device according to the present invention are shown in FIGS.
Description will be given with reference to the drawings.

1 and 2 show two modes of the hardware configuration of the entire data processing apparatus of the present invention. In FIG. 1 and FIG.
(1) is a distribution line which is a measured line, and (2) is a drop switch provided in the distribution line (1) (1) drawn from a columnar transformer to a consumer such as a general household or a factory. (3)
(3 ') is a data memory connected to the distribution line (1) (1) on the input side of the retractable switch (2) with clip terminals (4) and (4), and is the data memory of FIG. (3) is described later
The IC memory card (7) is detachably mounted, and the data memory (3 ') of FIG. 2 has a built-in fixed memory (5).
A data collector (7 ') described later is detachably mounted and electrically connected to the fixed memory (5). (6)
(6 ') is a memory medium for collecting data from the data storage devices (3) and (3'). In the embodiment shown in FIG. 1, the IC memory card (7) is used as the memory medium (6) before measurement. It is mounted on (3) and used, and in FIG. 2, a data collector (7 ') as a memory medium (6) is mounted on a data storage (3') after measurement and used. Since the data stored and held in the IC memory card (7) and the data collector (7 ') needs to be processed by the data processor described later,
The data transfer device (8) transfers / edits the data to / from the floppy disk (9) which is the memory medium (6) (6 ') like the IC memory card (7) and the data collector (7'). Here, when the data is delivered to the floppy disk (9), it is edited by performing a predetermined process by the rewriting prevention program. Reference numeral (10) is a personal computer which is a data arithmetic processing unit for arithmetically processing the data input to the floppy disk (9) and outputting it for a predetermined data item.

When measuring the terminal voltage of the distribution line (1) (1) by the above data processing device and processing the data, the data shown in FIG.
In the case of both shown in the figure, first, the data collector (7 ') is connected to the data memory (3) (3'), and the data collector (7 ') to the data memory (3) (3') is connected. The measurement start time is preset in and the initial data such as the ID code number, measurement date, measurement location, etc. are set in advance. still,
In addition to presetting the measurement start time, the data memory (3) (3 ') is used for continuous measurement by data marching.
It is also possible to start the sample measurement at the same time when the is connected to the distribution line (1) (1). At this time, in the case shown in FIG. 1, when the IC memory card (7) is mounted in the data storage device (3) and the initial conditions are set and input to this IC memory card (7), as shown in FIG. , Set and input initial conditions in the fixed memory (5) in the data memory (3 '). After the initial setting by the data collector (7 '), the data storage devices (3), (3') are connected to the input side of the retractable switch (2) of the distribution line (1) (1) with the clip terminals (4) (4). ) To connect
In this state, sample measurement of the terminal voltage on the distribution lines (1) and (1) is started.

The sample measurement of the terminal voltage by the data storage devices (3) and (3 ') is performed as follows. That is, during 24 hours a day from the measurement start time, the effective value of the terminal voltage V is measured by sampling for 1 second as shown in FIG. 3 (a), and further as shown in FIG. 3 (b). The average value ▲ ▼ for 1 minute is calculated based on the sample measured value vi. The procedure of the above measurement and arithmetic processing is delayed so that the measurement of the terminal voltage V by the data storage devices (3) and (3 ') is executed every one second as shown in the flowchart of FIG. The sample measurement value vi of
When repeated, the added value Σvi is divided by 60 to calculate the average value ▲ ▼ described above. This measurement and calculation process is repeated 24 hours a day, and each average value ▲ ▼ and the time of occurrence are used as measurement data for each minute, and a data storage device (3)
(3 ') is compressed and recorded in the IC memory card (7) or the fixed memory (5). Further, in the flowchart of FIG. 4, the calculation processing of the maximum value of the fluctuation width in 1 second sampling is performed based on the flowchart of FIG. That is,
For sample measurement value vi by 1 second sampling, i
The sample measurement values vi and vi + ₁ (see FIG. 3 (a)) for the 1st and i + 1th are calculated, the parameter i is sequentially added, and the magnitude of the fluctuation width wi is compared to finally determine the fluctuation width wi. Maximum value
The wimax and its generation time are recorded in the IC memory card (7) or the fixed memory (5).

Next, after 24 hours a day have elapsed and the sample measurement of the terminal voltage V is completed, connect the data storage devices (3) and (3 ') to the distribution line (1).
Remove from (1) and collect data. In the case shown in FIG. 1, the IC memory card (7) is removed from the data storage unit (3) and transferred to the data transfer unit (8) to store the stored contents of the IC memory card (7) in the floppy disk (9).
Transfer to. Here, in order to secure the reliability of the data, the rewriting prevention program performs the data rewriting prevention processing. On the other hand, in the case shown in FIG. 2, the data storage device (3 ')
A data collector (7 ') is connected to the data collector (7') and the contents stored in the fixed memory (5) in the data memory (3 ') are transferred to the memory in the data collector (7'). 7 ') is reconnected to the data transfer device (8), and the stored contents of the memory of the data collector (7') are transferred to the floppy disk (9) by the data transfer device (8). Here, the same data rewriting prevention measures as in the case shown in FIG. 1 are taken.

Next, after the data is collected by the IC memory card (7) and the data collector (7 '), the floppy disk (9) is attached to the personal computer (10) to perform data processing. First, the terminal voltage V of the distribution line (1) (1) is measured as an effective value by sampling for 1 second, and the average value ▲ ▼ for 1 minute is obtained based on the sample measured value vi and the Based on the measurement data ▲ ▼, as shown in the flowchart of FIG. 6, the above measurement data is 30 minutes from the measurement start time to the measurement completion time 24 hours a day
Add ▼ in sequence, divide the added value by 30 and average Is calculated, and this is calculated by shifting the 30-minute unit from the measurement start time to the measurement completion time 24 hours a day by 1 minute
Moving average value in minutes To calculate. These moving averages The maximum value of the terminal voltage in 24 hours a day by comparing the size of minimum value And its occurrence time. In addition, the maximum value wimax of the fluctuation range wi calculated based on the sample measurement value vi by 1 second sampling by the data storage devices (3) and (3 ').
And the time of occurrence thereof are output as they are, and if necessary, as in the case of the sample measured value vi by sampling for 1 second as shown in the flowchart of FIG. Average value with the _first Fluctuation width wj is calculated, parameter j is sequentially added, the magnitude of the fluctuation width wj is compared, and finally the maximum value wj of fluctuation width wj is calculated.
It is also possible to output max and its occurrence time. The initial setting data such as the measurement start time, ID code number, measurement date, measurement location, etc., is output as it is. The data items output from the personal computer (10) described above are printed out on a predetermined sheet to prepare a terminal voltage measurement summary sheet, or transferred to a floppy disk (9) for recording and storage. Further, if necessary, it is possible to prepare a plot graph based on the measurement data (1) for each minute, similarly to an analog chart such as a discharge type circular recording paper.

[Effect of device]

According to the present invention, since it is not necessary to mount the discharge type round recording paper, the recording paper feeding device is unnecessary and the data storage device attached to the measured electric wire is small when measuring the voltage or current sample on the measured electric wire. -It is lightweight and the setting work is easy. Further, since adjustment work prior to use is not required, handling is easy and since data collection is performed using a memory medium, there is no visual reading error, and high-precision digital measurement can be realized. Furthermore, in the digital measurement of the present invention, the effective value is measured by sampling for 1 second,
Since the average value for each minute is used as the measurement data, a small memory capacity is required, and since it is based on the sample measurement value obtained by sampling for 1 second, it is possible to follow an instantaneous fluctuation and obtain accurate measurement data. With the data rewrite prevention measure, it is possible to provide a highly reliable data processing device of great practical value.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a data processing device according to the present invention, FIG. 2 is a schematic configuration diagram showing another embodiment of the present invention, and FIG. 3 (a) is a terminal in a distribution line. Voltage characteristic diagram against time when effective value is measured by sampling the voltage for 1 second,
FIG. 3 (b) is a voltage characteristic diagram with respect to time when the sample measured values of FIG. 3 (a) are averaged over 1 minute, and FIG. 3 (c).
Is a voltage characteristic diagram with respect to time when moving average of the sample measured value at 1 second sampling in FIG. 3 (a) for 30 minutes,
FIG. 4 is a flow chart for executing the terminal voltage sample measurement, FIG. 5 is a flow chart for executing the arithmetic processing of the maximum value of the fluctuation range in the terminal voltage sampling for 1 second, and FIG. 6 is a movement for 30 minutes. Maximum terminal voltage by averaging,
FIG. 7 is a flow chart for executing the minimum value calculation process, and FIG. 7 is a flow chart for executing the maximum value calculation process of the fluctuation width at the one-minute average value of the terminal voltage. (1) ... measured wire, (3) (3 ') ... data storage device, (6) ... memory medium, (10) ... data arithmetic processor, vi ... sample measured value, ▲ ▼ ... … Average value (measured data), wi ... fluctuation range, wimax ... maximum value.

Claims (1)

[Scope of utility model registration request] 1. A voltage or current sample measurement start time on an electric wire to be measured is preset, and the voltage or current is measured for an effective value by sampling for 1 second while initial data is set and input. The average value for 1 minute based on the value is calculated and stored as the measurement data for every 1 minute, and the maximum value of the fluctuation range of the voltage or current and its occurrence time are calculated based on the sample measured value by the 1 second sampling. A data storage device for calculating and compressing and recording the measured data, the maximum value of the fluctuation range, and the data item including the time of occurrence in a memory medium, and a data storage device that is detachably attached to the data storage device and transferred from the data storage device. The data items including the measurement start time, the initial data and the measured data, the maximum value of the fluctuation range and the time of their occurrence are stored in the rewrite prevention program. Based on the memory medium that holds and collects the data and the measurement data collected from the data storage device through the memory medium, the maximum value, the minimum value, and the time of occurrence thereof within a predetermined period are calculated and other A data processing device, which processes data together with data items, and a data processing device.