JPH08203756A - Method and device for recording operation state of high-voltage automatic voltage adjuster - Google Patents

Abstract

PURPOSE: To exactly grasp the operation state of a high-voltage automatic voltage adjuster by collecting the data for grasping the operation state of the high-voltage automatic voltage adjuster installed on a high-voltage distribution line. CONSTITUTION: This is equipped with a means which records the maximum value and the minimum value of the 30min shifting average voltage of the primary and secondary voltages in one day by recording the primary voltage inputted into the high-voltage automatic voltage adjuster 1 and the outputted secondary voltage temporally, and a means which records the primary and secondary voltage before and after changeover of tap and the number of times of changeover of tap. These several records are recorded temporally in a once data record means 16, and at the time of grasping of the operation state of the high-voltage automatic voltage adjuster 1, the data recorded in the data record means 16 are extracted, and these are fetched into a data analysis means 17 through an IC card reader 18, and are charted, and based on the charted data, the accuracy of voltage adjustment, the load condition, etc., of the high- voltage distribution line 2 can be grasped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in the middle of a high-voltage power distribution line to compensate for line voltage drop and improve secondary voltage change by switching and adjusting taps on the primary voltage side. In the high-voltage automatic voltage regulator described above, a method of recording information necessary for operation and management of the voltage regulator, and an improvement of the recording device thereof.

[0002]

2. Description of the Related Art Conventionally, in a high-voltage distribution line, it is generally difficult to comprehensively correct and adjust the voltage drop and the voltage fluctuation of the distribution line network only by adjusting the output voltage from the substation. A high-voltage automatic voltage regulator (commonly called SVR) is installed in the high-voltage distribution line as a device for adjusting the transmission voltage in each necessary section. The high-voltage automatic voltage regulator (hereinafter, referred to as voltage regulator) is generally composed of a voltage regulation transformer, a tap selector, and a control device thereof, and performs line voltage drop compensation in the high-voltage distribution line, In response to fluctuations in the secondary voltage (voltage on the load side output from the voltage regulator), the tap on the primary voltage side is switched and adjusted as appropriate by a command from the control device using the tap selector, and the secondary voltage is automatically adjusted. It is configured so that it can be maintained at a preset reference voltage.

[0003]

However, the voltage regulator is installed in every required section of the distribution line in order to maintain the voltage of the distribution line in the high-voltage distribution line at an appropriate value. When grasping the situation, for example, when collecting the operation information necessary for efficient operation management of the voltage regulator in the electric power company, such as voltage adjustment accuracy, load state, number of tap switching operations, etc. For example, to go to the voltage regulator where the inspector is installed, open the operation door of the control box containing the control device, and supply the drive power to the control device of the voltage regulator inside the control box. The primary and secondary voltages of the voltage regulator are measured under the hot line condition by using the voltage transformer provided in the control box, and the line voltage drop that also serves as backflow detection is compensated in the control box. Line voltage drop compensator (generally The secondary side current is measured at the output side of the current transformer provided for driving (also referred to as DC), and the tap itself of the tap selector is selected from the observation window provided in the voltage regulator. The current status of the voltage regulator was grasped by visually confirming which voltage was switched to the tap number position for outputting.

Further, when the supply voltage of the electric power from the low-voltage distribution line, which is supplied to a general customer from the high-voltage distribution line via the distribution transformer, changes in the vertical direction as compared with a predetermined voltage, for example. In an electric power company, by measuring the voltage on the low voltage side of a distribution transformer using a measuring instrument for a certain period of time,
The problem of voltage fluctuation in the distribution line on the customer side has been dealt with by grasping the voltage fluctuation on the general customer side and adjusting the output voltage to the load side by this.

However, as described above, in order to maintain the voltage of the distribution line in the high-voltage distribution line at an appropriate value, the user goes to the voltage regulator and measures the primary and secondary voltages and the number of tap changes. Or, to measure the voltage on the load side of the distribution transformer, the inspector had to carry out the above-mentioned measurement work each time with a measuring jig or inspection list, so the measurement work was very time-consuming. It was time consuming and troublesome.

Moreover, since it is very troublesome to manually measure every day, it is conceivable to set the measurement date of the voltage regulator or the like in advance or to perform the measurement on the equipment inspection date. Since the information necessary for the operation management of the voltage regulator and the like is irregularly collected as described above, the maintenance and operation management of the devices and the distribution lines can be efficiently and
It was difficult to do economically.

Further, when collecting the operation information of the voltage regulator, the inspector stays at the voltage regulator on the pole for a certain period of time to measure the voltage and current, check the tap switching frequency, and record. Therefore, in addition to requiring a great deal of labor, it is a work performed at a high place and under a live condition, and it is very dangerous and it is necessary to make an immediate improvement.

In view of the above problems, the present invention collects various data as information necessary for operation and maintenance of the operating condition of the high voltage automatic voltage regulator installed on the high voltage power distribution line, and collects the data. The data can be recorded in the data recording means once, and the recorded data can be freely taken out by the analysis means by the software of a general-purpose personal computer, and the various data can be graphically displayed on a display device using a required program. To display,
Comprehensive operation management of distribution lines including high-voltage automatic voltage regulators, such as checking whether the distribution line voltage management is appropriate by printing out on paper, grasping the distribution line load amount, etc. It is an object of the present invention to provide a recording method and a recording device for the operating status of a high-voltage automatic voltage regulator that enables the above.

[0009]

In order to achieve the above-mentioned object, the present invention relates to a high voltage automatic voltage regulator installed in each required section of a high voltage power distribution line, and a primary type which is broadly input to the automatic voltage regulator. The voltage (input voltage), the secondary voltage (output voltage) output from the automatic voltage regulator, the current flowing on the secondary side of the automatic voltage regulator, and the tap switching frequency of the tap selector are individually specified. To each of the detection means, the input signal conversion means for receiving the output signal from each of the detection means via the input interface and converting it into a digital signal, and the signal output from the input signal conversion means is preset. Arithmetic processing means for individually performing arithmetic processing according to the programmed program, and data recording means for periodically recording the various kinds of arithmetically processed data at predetermined time intervals,
Various data recorded in the data recording means are analyzed and displayed graphically in a graph or a list, etc., and directly displayed, or a data analysis means for printing out these is provided with an operation status recording device. , The operation information (various data) necessary for grasping the operation management of the high-voltage automatic voltage regulator collected and analyzed by this operation status recording device is acquired early and based on the information necessary for the operation management. This makes it possible to comprehensively manage and grasp distribution lines.

[0010]

The present invention records the operating status of the high voltage automatic voltage regulator and analyzes the recording after a predetermined time,
It is possible to comprehensively manage distribution lines by confirming whether or not the voltage management of distribution lines is properly carried out, and by properly understanding the load amount and voltage drop of distribution lines. When performing comprehensive management of, the primary voltage input to the input side of the high voltage automatic voltage regulator, the secondary voltage output from the output side, the number of tap switching of the tap selector,
Primary and secondary voltage before and after the tap switching,
The secondary current is detected by each detecting means individually, and the various detected data are stored in the storage device of the arithmetic processing means together with the time, and the arithmetic processing is performed by the setting program, and the total of one day is calculated. Data and data at the time of tap switching are output from the arithmetic processing means.

Among the data output from the arithmetic processing means, the aggregated data for one day is once a day (for example, 24:00), the cumulative value of the number of tap changes of the day, and the primary time detected timewise. And, the average value of the voltage on the secondary side is calculated every 30 minutes, and the maximum and minimum values of the primary and secondary voltages in one day are output. Also, the data at the time of tap switching is the data at tap switching. Before and after the primary and secondary voltage and secondary current, and the tap number indicating the tap position after tap switching calculated based on the voltage ratio between the primary voltage and secondary voltage after tap switching, and the number of tap switching When,
Further, tap switching times (month, day, hour, minute, second) are respectively output, and these various output data are temporarily recorded and held by the data recording means of the operation status recording device.

Then, the recorded and held data is taken out from the data recording means and analyzed by the data analysis means, if necessary, and displayed or printed out as a chart (graph or list). To grasp the operating status of the high-voltage automatic voltage regulator at the time of collecting data,
On the basis of the data analyzed by the data analysis means, when the number of tap changes sharply increases at a certain time, or when the up and down fluctuations of the primary and secondary voltages are remarkable, further, the current on the secondary side is When it is possible to understand when there is a sudden change, etc., this enables the high-voltage automatic voltage regulator that outputs the data, or the distribution line where this voltage regulator is installed,
It can be inferred that a phenomenon different from normal time had occurred,
As a result, it is convenient to get a clue to recheck the load condition of the distribution line and the voltage adjustment accuracy, etc., and it is possible to easily perform comprehensive management of the distribution line including the high voltage automatic voltage regulator. Becomes

Further, in the present invention, it is particularly easy to grasp the number of tap changes of the tap selector, and the tap change position is set to the primary voltage after the tap change which is the input / output voltage of the high voltage automatic voltage regulator. The voltage ratio with the next voltage can be easily calculated by arithmetic processing by the arithmetic processing means,
Since the operating condition recording device is configured so that it is possible to determine whether or not the calculated value of the voltage ratio falls within the allowable range of the voltage value of which tap number is set in advance, which tap position voltage is determined in a certain period. The rationalization of distribution line management can be achieved by using it as a judgment material to understand why it is often used, or whether there is a problem with the setting of the secondary voltage of the high-voltage automatic voltage regulator. It can be done in a convenient way.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. First, a schematic configuration of an operating condition recording device for a high voltage automatic voltage regulator according to the present invention will be described with reference to FIG.
In FIG. 1, 1 is a high voltage automatic voltage regulator (hereinafter referred to as SVR device) installed in a required section of the high voltage power distribution line 2,
As is well known, it is composed of a voltage adjusting transformer, a tap selector, and a control device. Reference numeral 3 denotes a primary voltage detector for detecting the primary voltage of the high-voltage distribution line 2 input to the SVR device 1 via the voltage transformer PT ₁ installed on the input side (primary voltage side) a of the SVR device 1. The primary voltage is detected by removing noise and harmonic noise. Reference numeral 4 is a secondary voltage detector that detects the secondary voltage output from the SVR device 1 via the voltage transformer PT ₂ that is also installed on the output side (secondary voltage side) b of the SVR device 1. First, the noise component is removed to detect the secondary voltage output from the SVR device 1 to the high-voltage power distribution line 2. Reference numeral 5 is a secondary current detection unit that detects a current on the secondary side via a current transformer CT installed on the output side b of the SVR device 1, and outputs noise from the SVR device 1 by removing noise components and the like as described above. The secondary current is detected.

Next, 6 counts the number of tap changes of a tap selector (not shown) incorporated in the SVR device 1,
For example, it is tap switching number measuring means (hereinafter referred to as tap switching detecting means) including an electromagnetic counter. And
The primary and secondary voltage detectors 3 and 4 and the secondary current detector 5
The primary / secondary voltage / secondary current signals respectively output from the voltage / current detection means A are composed of the primary / secondary voltage / secondary current signals (data) via the input interface 7. From the multiplexer 8 that switches sequentially,
The voltage / current signal (data) input to the A / D converter 9 which is an input signal converting means is converted into a digital signal, and the arithmetic processing means 10 including a microcomputer shown below is provided with tap switching information. It is input together with the measurement signal that detects the number of tap changes.

The arithmetic processing means 10 is an arithmetic processing device (hereinafter, CP) including an arithmetic circuit and a timer circuit 12.
U device) 11 and a first storage device (hereinafter referred to as ROM device) 13 that stores a predetermined program and constants
And a second storage device (hereinafter, referred to as a RAM device) 14 that temporarily stores input data and a calculation result, and performs a calculation process on data indicating the operating status of the SVR device 1 per day. In addition, L is an operation display lamp of the arithmetic processing means 10. Next, the programs and input data stored in the ROM device 13 and the RAM device 14 of the arithmetic processing means 10 will be described.

First, the ROM device 13 stores the following operation program and reference constants. (1), a program for integrating the number of tap switching times (number / day) (2), calculation of a moving average value of primary voltage and secondary voltage for 30 minutes, and primary and secondary voltage for 24 hours (1 day) Program for calculating maximum value and minimum value (3), program for storing processed data in data recording means such as an IC card (4), program for converting primary voltage, secondary voltage, secondary current into scale (5), constant monitoring program (6), program for calculating voltage ratio between primary voltage and secondary voltage after tap switching (7), tap based on voltage ratio between primary voltage and secondary voltage after tap switching A program (8) for determining the tap number (1st to 9th taps) of the switching position, and a preset tap switching position (1st to 9th) based on the standard voltage ratio between the primary voltage and the secondary voltage.
(9), tap switching data and 1-day total data
Program to be stored in M device 14

Next, the RAM device 14 stores the following input data and data of arithmetic processing results (see FIG. 4). (1), data before and after tap switching, time of tap switching (month, day, hour, minute, second), tap number indicating tap position after tap switching, integrated value of tap switching times, primary before tap switching, Secondary voltage and secondary current, primary and secondary voltage and secondary current after tap switching (2) 1-day aggregated data [time set once a day, for example, 24:00 (midnight) To record] (Fig. 3
reference). , Recording time (month, day 24:00:00), cumulative value of tap switching times per day, primary and secondary voltages, and maximum value of 30-minute moving average of these voltages, primary and secondary voltages And the minimum of the 30-minute moving average of these voltages

Next, reference numeral 15 in FIG. 1 denotes an output interface connected to the output end of the arithmetic processing means 10, and shows a daily operation record of the SVR equipment 1 which is arithmetically processed by the arithmetic processing means 10 and output. Various data are collected, and these data are stored as a daily operation record of the SVR device 1 in a data recording means 16 including an IC card or the like that is removably attached to an IC card interface (not shown) provided in the output interface 15. To be done. The data recording means 16 is an LSI
A memory card having a built-in memory and capable of storing the data for one day to several months depending on its storage capacity.

Next, 17 shown in FIG. 1 is a data recording means 1
6 shows a data analysis means for analyzing the data stored in FIG. 6 to chart the data or displaying it on the screen.
An IC card reader 18 that reads data stored in the data recording means 16 composed of a C card, and a signal output from the IC card reader 18 is analyzed by a data analysis program to obtain data indicating the operating status of the SVR device 1. The data analysis means 17 is composed of a general-purpose personal computer for displaying a chart (graph or list) in a required format, and a printer 19 for printing out the displayed chart.

As shown in FIG. 1, the operation status recording apparatus X in the SVR device 1 of the present invention includes a voltage / current detecting means A composed of primary and secondary voltage detecting sections 3 and 4 and a secondary current detecting section 5. The tap switching detection means 6, the input interface 7, the multiplexer 8, the A / D converter 9, the arithmetic processing means 10 for arithmetically processing the signals indicating the voltage / current, the tap switching frequency, etc., and the SVR device 1 A data recording means 16 for recording / storing various data describing the operating status via the output interface 15, and a data analysis means 17 for analyzing and displaying various data stored in the data recording means 16. Has been done.

Next, the operating condition recording device X records the operating condition of the SVR equipment 1 installed on the high voltage power distribution line 2 and displays it on the display device 18a of the personal computer by the data analysis means 17, or A case of printing out by making a chart or the like will be described. First, in the SVR device 1, the primary voltage of the input side a input from the high-voltage distribution line 2 causes the situation of the distribution line, that is, the situation of the line voltage with the increase or decrease of the load, that is, the line voltage drop with the increase or decrease of the load. Compensate and follow changes in load to SVR
In order to maintain the secondary voltage output from the output side b of the device 1 at the preset reference voltage, the secondary voltage can be automatically adjusted by tap switching. The reference voltage has a preset dead band width (for example, ± 1.5% of the reference voltage), and its set value is set. Normally, the voltage adjustment relay (generally referred to as 90 relay) is used. It is preset and adjusted by.

Next, the operation of the operation status recording device X will be sequentially described with reference to the flow chart shown in FIG.
Step 30 shown in FIG. 2 collects data indicating the operating status of the SVR device 1, and the data collected at this time is detected by the voltage transformers PT ₁ and PT ₂ and the current transformer CT. In the present embodiment, the primary voltage input to the SVR device 1 and the secondary voltage and secondary current output from the SVR device 1 correspond to the first and second voltage detection units 3 and 4 every one second in this embodiment. The processing unit 10 through the detecting unit 5 → the input interface 7 → the multiplexer 8 → the A / D converter 9
Are sequentially stored (stored) in the RAM device 14.

In step 31, the primary and secondary voltages stored in the RAM device 14 are individually accumulated every 30 minutes by a program stored in the ROM device 13, and the primary voltage in 30 minutes is calculated. The step of calculating the average value of the voltage and the secondary voltage by the CPU device 11 is shown. To calculate the average value by distinguishing the primary voltage and the secondary voltage for every 30 minutes means, for example, the primary voltage detected every 1 second from 10:00:00 to 10:30:00. Also, rather than calculating the secondary voltage individually and calculating the average voltage for 30 minutes, it is 10:01:01 to 10: 31: 1: 10, 10: 1: 02: 10 to 10:00 The time is always shifted every 1 second, such as 31 minutes and 2 seconds, and 30 minutes are divided into 1 sections, and the primary (18
00 data) and secondary voltage (1800 data) for 30 minutes average voltage is arithmetically processed by the CPU device 11 of the arithmetic processing means 10, and this is used as primary and secondary 30-minute moving average voltage. The calculated primary and secondary average voltage values are temporarily stored in the RAM device 14.

In step 32, the above step 31
The maximum value and the minimum value of the 30-minute moving average voltage calculated by the above are sequentially updated, and the 30-minute moving average voltage calculated while shifting every 1 second in step 31 is RO.
The program stored in the M device 13 compares and determines whether it is larger or smaller than the moving average voltage of 30 minutes before 1 second, and when it is larger, it is updated as the maximum value of the voltage at that time,
On the contrary, when it is smaller, it is updated as the minimum voltage of the time, and the maximum voltage and the minimum voltage are stored in the RAM device 14 of the arithmetic processing means 10, respectively. In this way, in step 32, the 30-minute moving average voltage is shifted every 1 second, and is constantly compared with the 30-minute moving average voltage one second before, and if it is higher, the data is updated as the maximum value of the voltage at that time. Conversely, when the voltage is low, the maximum value is not updated, and the voltage one second before remains as the maximum value.

If the minimum voltage is low, that is, if the voltage is lower than the minimum voltage one second ago, the ROM device 13
When the voltage is determined by the program in the above, the data is updated as the voltage of the minimum value, and when the 30-minute moving average voltage is larger than the minimum value but smaller than the maximum value, the voltage is the maximum, Since it is not related to the minimum voltage, it is not stored or updated. As a result, in step 32, the maximum and minimum values of the primary voltage and the secondary voltage are updated every one second, and the maximum and minimum values of the primary and secondary voltages at the update time are sequentially updated in the RAM device 14. Stored as data.

Step 33 is a step for determining whether or not a command signal for switching the tap is output to the tap selector by the voltage adjusting relay in the control device (not shown), and the switching signal is output. If not, the process proceeds to the next step 35. On the other hand, a tap switching command signal is output to the tap selector, and when this is detected in step 33, the process proceeds to step 34. As described above, the fact that the tap switching command signal is output to the tap selector means that, for example, in the high voltage distribution line 2 connected to the output side (secondary voltage side) b of the SVR device 1, When a load fluctuation occurs due to circumstances and the secondary voltage (for example, 6,800 V) of the SVR device 1 is out of the set range of the reference voltage, by switching the tap on the primary voltage side of the SVR device by the tap selector, The secondary voltage is maintained at a preset voltage to maintain the load-side voltage (secondary voltage) of the high-voltage power distribution line 2 within a set range, and the customer side is adversely affected by voltage fluctuations of the power distribution line. To prevent this.

When a tap switching command signal is detected in step 33, the process proceeds to step 34, in which the data immediately before the tap switching is stored in the RAM device 14 of the arithmetic processing means 10. As the data to be stored in the RAM device 14, the time (month / day-hour: minute: second) immediately before tap switching output from the timer circuit 12 of the arithmetic processing means 10 and the data input / output to the SVR device 1 are output. Voltage (primary voltage and secondary voltage) and SV
The secondary current flowing through the high-voltage distribution line 2 connected to the output side b of the R device 1 is stored as a set in the RAM device 14 (see FIG. 4). It goes without saying that the data of the primary voltage and the secondary voltage for calculating the moving average voltage for 30 minutes in step 31 is collected in the RAM device 14 in the same manner as described above.

Step 35 is for determining whether or not the tap selector has been switched, that is, a step for knowing whether or not the tap has been switched, and if the tap has been switched, the step is carried out. 36, or if tap switching has not been performed, the process proceeds to step 37 described later. Then, when the tap switching operation (driving the tap selector) is performed in the step 35, the data immediately after the taps are switched to the position where the predetermined voltage is obtained are stored in the step 36.
To collect by. As the data after tap switching, which is collected in this step 36, as shown in FIG. 4, the tap switching output from the timer circuit 12 of the arithmetic processing means 10 is performed (month / day-hour: minute: second). , The number of tap changes, and a fixed time (1 to several 10
Seconds), the primary voltage input to the SVR device 1 and the SV
The secondary voltage and secondary current output from the R device 1 and the data of the tap number indicating the tap switching position are collected and stored in the RAM device 14.

As a means for determining the tap number indicating the tap position after the tap switching, the voltage ratio between the primary voltage and the secondary voltage stored in the ROM device 13 of the arithmetic processing means 10 after the tap switching. The CPU device 11 of the arithmetic processing means 10 discriminates the voltage ratio and the tap number each time the tap is switched by a program for calculating the tap ratio and a program for determining the tap number indicating the tap switching position based on the voltage ratio. Is calculated to determine the tap number indicating the tap position after the tap switching. In determining the tap number, it is stored in advance in the ROM device 13, that is, based on the voltage ratio between the standard primary voltage and the secondary voltage, as shown in FIG. The determination is performed by referring to the reference constant (determination value) of the tap number indicating the set tap position.

As shown in FIG. 6, the reference constant (judgment value) for discriminating the tap number indicating the tap position after tap switching is set to 10 for the primary voltage corresponding to the tap number (1 to 9).
The primary voltage is set by subtracting 0V each, the secondary voltage is set to 6,800V in this embodiment, and the determination corresponding to each tap number is made by dividing the primary voltage by the secondary voltage at each tap number. The value (voltage ratio) is set,
As shown in FIG. 6, the voltage ratio is 1.029 for the tap number 1, 1.015 for the tap number 2, and 1.000 for the tap number 3, such that the tap number is 1. Each time the value is incremented by one, the determination values of the tap numbers before and after that are set with a difference in the range of 0.014 to 0.015. Therefore, the determination values from tap number 4 to tap number 9 are 0.014 to 0.
The difference is set to 015. As a result, for each tap number, it is possible to determine which tap number has been switched while maintaining the allowable range of ± 0.007.

Now, for example, in FIG.
A case will be described in which the tap number is determined by an example in which taps are switched at 51 minutes 52 seconds. FIG.
, The primary voltage before tap change is 6,396V
However, the secondary voltage is 6,612V, respectively,
When obtaining the voltage ratio of the two voltages, dividing the primary voltage by the secondary voltage (6,396 / 6,612) yields a reference constant of 0.967 (deleted after the fourth digit of the decimal point). When applied to the judgment value shown in FIG. 6, the difference between the reference constant of the tap number 5 (0.971) is −0.004, so the voltage ratio indicating the reference constant of 0.967 is the tap number 5. You can see that

Therefore, this time, a case will be described in which, when the tap number indicating 5 is switched, it is determined which tap this tap has been switched to. In FIG. 4, the primary voltage is 6,432 V and the secondary voltage is 6,750 V immediately after the tap number 5 is switched, and both voltages are divided to obtain the voltage ratio. It becomes 0.953. When this numerical value is applied to the judgment value shown in FIG. 6, the reference constant (0.9 of the tap number 6) is obtained.
56) is a difference of −0.003, and therefore the above 0.95
The voltage ratio indicating the reference constant of 3 corresponds to tap number 6, indicating that the tap has been switched to tap number 6.
As described above, since the reference constant of each tap number shown in FIG. 6 is stored in advance in the ROM device 13 of the arithmetic processing means 10, the primary voltage after tap switching is divided by the secondary voltage, and the divided value is obtained. The tap number after tap switching can be easily grasped by checking the tap constant in the range of ± 0.007 and matching with the tap constant of the tap number or approximating within the allowable range. However, all of these operations are performed by the arithmetic processing by the arithmetic processing means 10 in step 36 of the flowchart shown in FIG.

In step 38, the data after tap switching is changed to R.
The step of taking out from the AM device 14 and storing it in the data recording means 16 composed of an IC card inserted in the IC card interface is shown.
As shown in FIG. 4, the data stored in the data recording means 16 includes tap switching times, tap switching times, primary and secondary voltages and currents before tap switching, and primary and secondary voltages after tap switching. And the secondary current and the tap number indicating the tap position after tap switching. Next, step 37 indicates the time when the total data for one day is stored, and the storage time of the data in this example is midnight (24:00), and the total data stored at this time is 1 It is tabulated data indicating the maximum and minimum values of the 30-minute moving average voltage of the primary and secondary voltages and the number of tap switching in a day, and these data are stored in the data recording means 16 that collects the data before and after the tap switching. When it is not the data storage time, the process returns to step 30 to continue the data collection.

When the storage time of the aggregated data of one day is reached, that is, at midnight (24:00), the aggregated data of one day is arithmetically processed by the arithmetic processing means 10 in step 39, and the output interface It is stored in the data recording means 16 which has already stored tap switching data via 15. As shown in Fig. 3, the aggregated data for one day is RO
The maximum value of the 30-minute moving average voltage of the primary and secondary voltages calculated by the program for calculating the maximum value and the minimum value of the 30-minute moving average voltage of the primary and secondary voltages stored in the M device 13 per day. It is a minimum value and a cumulative value of tap switching times.

In step 40, the data collecting the operation status of the SVR device 1 is taken out from the data recording means 16, or
This is a step of judging whether or not the data recording means 16 may be taken out from an IC card interface (not shown) in order to take out the data, and when it is not necessary, the data recording means 1 may be directly put into the IC card interface.
Leave 6 installed and use it for the next day's data collection. When the data recording means 16 is taken out in step 40, the process proceeds to step 41, in which the data recording means 16 is processed through the IC card reader 18 and various data stored in the data recording means 16 is used by the data analysis program. The data analysis means 17 composed of a personal computer captures and analyzes the data, and the various data are displayed in tabular form on the display device 18a as shown in FIGS. 3 to 5 at step 42 or printed out by the printer 19. The display device 18
The operation status of the SVR equipment 1 and the high-voltage power distribution line 2 is grasped in step 43 based on the chart of the data displayed in a or the printed data.

The data in step 43 can be grasped in FIG. 3 by grasping the number of tap changes per day and the maximum and minimum values of the primary and secondary voltages on that day. By the 11th of the month,
When a day with a large number of tap changes, what is the maximum and minimum values of the primary and secondary voltages on that day, it can be estimated whether there are any special circumstances on the load side. As a result, An important information source for managing the high-voltage power distribution line 2, such as being able to refer to clues to change the reference voltage of the SVR device 1 and confirming the power usage status to the load side consumer. (Data).

Also, in FIG. 4, in one day,
The number of tap changes can be grasped, the number of taps changed in many cases, what are the primary and secondary voltages and the secondary current at that time, and at what time the tap change is performed. It is possible to immediately understand if it is being performed well, and by this, the operating status of the SVR equipment 1 can be well understood, and at what time the secondary current is increasing and decreasing, why it is, It can be used as a clue to change the distribution capacity on the load side when it is found that the load capacity is frequently used or reduced.
It is possible to grasp the operation status of the VR device 1 over a wide range, and thereby it is possible to perform comprehensive management of the high voltage power distribution line 2.

Further, since the data recording means 16 records the operating status of the SVR equipment 1 on a 24-hour basis, it is possible to carry out SV every day.
It is not necessary to grasp the operating status of the R equipment 1, and it is only necessary to replace the data recording means 16 at a certain time, so it is possible to easily grasp the operating status of a large number of SVR equipment 1. Further, until now, the tap switching status of the SVR device 1 could only be visually confirmed on site, but the device of the present invention sets the voltage ratio between the primary voltage and the secondary voltage after the tap switching in advance. , Which tap number this voltage ratio represents is stored in advance in the arithmetic processing means 10, and when tap switching is actually performed, the voltage ratio of the primary and secondary voltages at that time point. The arithmetic processing means 10 can easily grasp whether or not the voltage ratio is approximated to a voltage ratio indicating a tap number of a preset judgment value with a required allowable range. This is convenient since it can be recorded in the data recording means 16. Further, the present invention can be realized even if the data stored in the data recording means 16 is transmitted to a nearby substation or control station using a wireless or wired means and analyzed.

[0040]

As described above, according to the present invention, various data indicating the operating status of the high voltage automatic voltage regulator is recorded in real time, and the data is temporarily stored in the data recording means. Since the recorded data was made into a chart by taking out and analyzing by the data analysis means, the operation status of the high-voltage automatic voltage regulator was observed by the inspector of the equipment for a certain period of time on the pillar as in the past. Since it is possible to know in real time every 24 hours unlike the case where it is obtained, it is convenient that the operating status of the high voltage automatic voltage regulator can be quickly and surely known from the tabulated data.

In particular, when grasping the switching position of the tap for switching the tap voltage, the judgment value of the reference constant calculated based on the preset voltage ratio between the standard primary voltage and the secondary voltage is used. On the other hand, tap switching is performed by adopting a method of comparing the data calculated by the voltage ratio between the primary voltage and the secondary voltage after tap switching by the arithmetic processing means and determining the tap number after tap switching. In this case, it is possible to reliably record which tap number was switched as data, and to make a chart of this data.Therefore, in the high-voltage power distribution line, determine which tap number voltage is used on the load side. It is convenient because it can be done easily.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing an operating condition recording apparatus for a high voltage automatic voltage regulator according to the present invention.

FIG. 2 is a flow chart for explaining the operation status of the operation status recording device of the present invention.

FIG. 3 is a graph showing the operating conditions of the high-voltage automatic voltage regulator by outputting and displaying the maximum and minimum values of the 30-minute moving average voltage of the primary voltage and the secondary voltage and the cumulative value of the number of tap changes in one day. It is a figure.

FIG. 4 is a diagram in which primary and secondary voltages and secondary currents before and after tap switching, a tap switching frequency, and a tap switching position are output and displayed in the present invention.

5 is a graph of the data shown in FIG.

FIG. 6 is a diagram showing a standard determination value (voltage ratio) at each tap number.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High voltage automatic voltage regulator 2 High voltage distribution line 3 Primary voltage detection part 4 Secondary voltage detection part 5 Secondary current detection part 6 Tap switching frequency measuring means 10 Arithmetic processing means 11 Arithmetic processing device 13 First storage device 14 Second Storage device 16 data recording means 17 data analysis means 18 IC card reader 18a display device 19 printer

Claims (3)

[Claims] 1. A primary voltage input to a high-voltage automatic voltage regulator installed in a predetermined section of a high-voltage distribution line and a secondary voltage output from an output side are input to an arithmetic processing means at predetermined intervals. , The maximum value and the minimum value of the average value of the primary and secondary voltages within a predetermined time are sequentially updated, and the data showing the maximum value and the minimum value of the average value of the primary and secondary voltage in one day is recorded. When the tap voltage of the high-voltage automatic voltage regulator is adjusted, the primary and secondary voltages before and after tap switching, the secondary current, the tap switching frequency, and the primary and secondary voltages after tap switching are recorded. Is calculated by the arithmetic processing means to calculate the tap number at the tap switching position, and the data is recorded in the data recording means, and further various data recorded in the data recording means are analyzed by the data analysis means. A method for recording the operating status of a high-voltage automatic voltage regulator, characterized in that the voltage adjustment accuracy, load state, etc. of the high-voltage automatic voltage regulator are grasped based on a chart and based on this charted data. 2. The calculation of the tap number indicating the tap switching position is a judgment value serving as a reference constant calculated by a voltage ratio between a primary voltage and a secondary voltage preset corresponding to a predetermined number of tap numbers. And a voltage ratio calculated by arithmetic processing of the primary voltage and the secondary voltage after tap switching by the arithmetic processing means, and the voltage ratio calculated after the tap switching is
When approximated to a predetermined reference constant judgment value within a range of allowable numerical values, it is configured to calculate that a tap has been switched to a tap number of a tap position indicating the judgment value. Item 1. A method of recording the operating status of the high voltage automatic voltage regulator according to Item 1. 3. The primary voltage input to the high voltage automatic voltage regulator and the secondary voltage output from the output side are measured every predetermined time, and the average value of the primary and secondary voltages in one day is calculated. Means for recording the maximum and minimum values, and primary and secondary voltage before and after tap switching, secondary current, tap switching data, and tap number data indicating the tap position after tap switching. An operating condition recording device for a high-voltage automatic voltage regulator, comprising: a recording means; and a data analysis means for extracting and recording the data recorded in the data recording means at a required time.