KR0157648B1 - Time setting method of watt hour meter - Google Patents

Abstract

The present invention relates to a time setting method of a precision power supply device for power supply and supply, the setting / memory switch of the switch operation unit must be continuously turned on twice to switch to the setting mode, and the contents to be set next according to the blinking position of the display unit. By recognizing and setting the start time of the late night time zone with the numeric conversion switch and the completion of the setting with the / memory switch, the end time of the late time zone, the start time and end time of the day time zone, the start time and end time of the evening time zone By setting the start time and end time of the power factor measurement time zone, the current day of the week, year, month, day, scheduled meter reading, current hour and minute in order, it is easy to apply to changes in the rate system or power supply during use. will be.

Description

Time setting method of precision multi-function meter for power supply

1 is a block diagram showing the overall configuration of the present invention.

2 is an external front view showing the state of the display unit of the present invention (a) to (c).

3 is a flowchart showing the operation of the present invention.

* Explanation of symbols on the main parts of the drawings

2: central control processor 3: clock generator

6 hardware control processor 7 clock generator

8: switch control panel

The present invention relates to a time setting method of a precision power supply device for power supply, in particular, the time zone and the current year of the night time zone, day time zone, evening time zone and power factor measurement time zone. month. Work. Day of the week. city. The present invention relates to a time setting method of a precision power meter for power supply and supply so that the present time of minutes and the scheduled reading date are arbitrarily set.

The power supply precision multi-function instrument is used in combination with current transformer and transformer for measurement. It is installed in the commercial or industrial consumer to measure the precision power, power factor measurement power, power factor measurement free power and maximum power amount to user or meter reader. The details of the power supply will be provided for each time period.

In addition, the precision power meter for power supply and supply has the functions of a precision power meter, a power factor measurement power meter, a power factor measurement reactive power meter, and a time switch. The user should be able to adjust the measurement range or time zone according to the environment.

However, even in the conventional electronic meter, it is very complicated to adjust the time zone or measurement range set at the time of initial installation, and thus, there is a disadvantage that the already installed power meter must be replaced when the tariff system or the power supply method is changed.

Accordingly, the present invention is based on the measurement time zone and the current year according to the change of the billing system or the power supply system during the initial installation as well as during use. month. Work. city. minute. It is an object of the present invention to provide a time setting method of a precision power meter for power supply and supply so that the day of the week and the scheduled metering date are variably set.

To this end, in the present invention, the setting / memory switch of the switch operating unit must be turned on twice to set the mode, and the start time of the late night time zone is set by the number conversion switch while recognizing the contents to be set next according to the blinking position of the display unit. The end time of the night time zone, the start time and end time of the day time zone, the start time and end time of the evening time, the start time and end time of the power factor measurement time zone, Day of the week. year. By setting the month day, the scheduled meter reading date, and the current hour and minute in order, it is easy to apply to the change of the billing system or the power supply during use.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

By using the current value and voltage value detected through the current transformer (CT) and instrument transformer (PT) not shown in the figure, the effective pulse (WP) and the voltage of the wire The effective pulse WP and the phase value described above are obtained from a power measurement unit (not shown) that calculates an invalid pulse QP based on a phase value PE according to a short circuit or a ground fault and a voltage value proportional to an instantaneous reactive power. An input compensator 11 for receiving the PE and the invalid pulse QP, and compensating for the decrease and the change caused by the noise during signal transmission;

While receiving the normal effective pulse WP, the phase value PE, and the invalid pulse QP via the input compensator 11, the clock generator 3 receives a time setting clock to receive the effective power amount, the reactive power amount, and the like. A central control processor (2) for calculating a power factor pulse signal, an effective pulse compensation signal and an invalid pulse compensation signal by calculating a value for the power factor;

A time invalid pulse compensator 4 for receiving an invalid pulse compensation value from the central control processor 2 and outputting an invalid pulse correction signal to a power measurement unit;

The time-effective pulse compensation unit 5 receives the effective pulse compensation signal from the central control unit 2 and outputs the effective pulse compensation signal to the power measuring unit, and receives the electric power pulse signal from the central control unit 2. The clock for setting the time is received from the clock generator 7 and the time and time zone are timed out, while the setting / memory switch SW1, the number conversion switch SW2, and the maximum demand power return switch of the switch operation section 8 ( A hardware control processor 6 which receives a control signal according to a user's processing operation through SW3) and outputs various display signals;

Operating state of the electricity meter while selectively receiving the corresponding LED of the first display unit 10 while receiving the operation display signal, the reactive power meter operation display signal, the no-measurement display signal, and the correction display signal of the electricity meter from the hardware control processor 6, respectively. (kwh), the display driving unit 9 for notifying whether the reactive power meter (kvarh), the non-metered (or reverse current flow) state (non-metered), or the power failure state (blackout);

Accumulated power amount of the midnight time zone to the present through the second display unit 12 by receiving a display signal for the cumulative power meter up to the present (measurement day) of the late night time zone from 22:00 to 08:00 from the hardware control processing unit 6 A second display driving unit 11 for notifying 6 digits (for example, 6 digits including 2 decimal places, such as 1027.31 kwh),

Accumulated power amount from the hardware control processing unit 6 to the present (measurement date) of the accumulated power meter up to the present day (measurement date) of the day time zone from 08:00 to 18:00, and through the third display unit 14 A third display driver 13 for notifying 6 digits (for example, 3028.84 kwh),

Accumulated power amount from the hardware control processing unit 6 to the present (measurement day) of the cumulative power meter from 18:00 to 22:00 in the evening (reading date), and through the fourth display unit 16 to the present time in the evening Is input to the fourth display driver 15 for indicating 6 digits (e.g., 3134.26kwh) and the power factor display signal for power factor measurement from the hardware control processor 6, and the six digits (for example, 5th through 18). A fifth display driver 17 for notifying a cumulative amount of power in a power factor specific time period up to the present by a number of 0255.81 kwh;

Receiving the reactive power amount display signal for power factor measurement from the hardware control processor 6, the sixth display unit 20 informs the cumulative reactive power amount of the power factor measurement time period by six digits (for example, 0028.14 kva). The sixth display driver 19;

A seventh display driver 21 for receiving a screen display signal from the hardware control processor 6 and indicating whether or not to read the meter while expressing no display or meter reading through the seventh display unit 22;

The hardware control processor 6 receives the demand power indication signal for the current demand time of the day time zone from 08:00 to 18:00, and then, through the eighth display driver 24, reads the daytime An eighth display driver 23 for notifying the demand power for the current demand time period or the cumulative maximum demand power of the meter reading day with four digits;

The maximum demand power of the daytime period from 08:00 to 18:00 is input from the hardware control processor 6, and the maximum demand power of the daytime period until the present time after the last reading through the ninth display unit 4 is 4 A ninth display driver 25 informed by digits,

The maximum demand power of the evening time from 18:00 to 22:00 is input from the hardware control processor 6 and the maximum demand power of the evening time until the present time after the last meter reading is received through the tenth display unit 28. A tenth display driver 27 informed by digits,

Receives the demand power display signal for the current demand time of the evening time from 18:00 to 22:00 from the hardware control processing unit 6 through the eleventh display unit 30 to the present time of the evening time until the present An eleventh display driver 29 informing a 4-digit number of cumulative maximum demand power of demand power or meter reading day for a demand time period;

A twelfth display which receives a time display signal or a power factor display signal from the hardware control processor 6 and informs the elapsed minutes of the current demand time or the 100-percent power factor in 15 digits in two digits through the twelfth display unit 32. The driving unit 31,

The time display signal is inputted from the hardware control processing section 6, and the present time is displayed on the thirteenth display section 34 in four digits. Minute (12:29) or month to perform meter reading. The thirteenth display driver 33 for notifying work 10.24 is included.

The power supply precision composite meter of the present invention configured as described above is effective by a voltage value proportional to the instantaneous voltage by using the current value read by the current transformer CT in the power measurement unit and the voltage value read by the instrument transformer PT. Detects the invalid pulse QP by the reactive voltage value proportional to the pulse WP and the instantaneous reactive voltage and the phase values PE according to the ground fault or short circuit of the wire, and receives them through the input compensator 1. The central control processing unit 2 performs an operation to output a power amount pulse signal including contents of an effective power amount, a reactive power amount, and a power factor.

Therefore, the hardware control processor 6 receiving the above-mentioned electric power pulse signal detects the measured value according to the type and time zone of the measured value, and then, from the first display driver to the thirteenth display driver (9), (11), (13), First through thirteenth display portions 10 through (15), (17), (19), (21), (23), (25), (27), (29), (31), and (33). , (12), (14), (16), (18), (20), (22), (24), (26), (28), (30),

(32) and (34), in the case of the current screen as shown in (a) of FIG. 2, the operation of the electricity meter (kwh), the operation of the reactive electricity meter (kvarh), the no-measure or reverse current state and power failure , The cumulative amount of power in the late-night time zone to date, the cumulative power amount in the daytime period to date, the cumulative power amount in the evening time to date, the cumulative power amount in the power factor measurement time to date, and the cumulative power factor measurement time period to date It displays the amount of reactive power, the maximum demand power in the daytime period, the maximum demand power in the evening time, the evening power in the evening time, the elapsed time of the current time and the hour and minute of the current time,

In the case of the meter reading screen, as shown in (b) of FIG. 2, the operation and state of the meter reading, the cumulative amount of power in the midnight time zone, the cumulative amount of power in the daytime period of the meter reading, the cumulative power amount in the evening time, and the cumulative power amount in the power factor measuring time of the meter reading day The cumulative reactive power of the power factor measurement time of the meter reading day, the cumulative maximum demand power of the weekly time of the meter reading, the meter reading day, the maximum demand power of the daytime reading of the meter reading day, the maximum demand power of the evening time of the meter reading day, and the cumulative maximum demand of the evening time of the meter reading day Power quantity, power factor of percentage and month of meter reading day. Mark the day.

The user sets the time when the current screen and the meter screen are displayed alternately at the time interval set by the user, or when the user wants to install the product for the first time or when the user wants to use it again after being reset. It is checked whether the setting / memory switch SW1 of 8) is turned on (step 40), and if it is turned on, it is checked whether the setting / memory switch SW1 is turned on again (step 41).

If the number conversion switch SW2 is turned on (step 42) while the setting / memory switch SW1 is not turned on again (step 42), the current screen is displayed (step 43) because it is confirmed without changing the setting contents (step 43). If it is on, it is a process of setting the start time of the late night time zone, so that the left two digits of the second display unit 12 blink to inform the user (step 44).

Check whether the user has turned on the number conversion switch (SW2) (step 45), so that the user selects one from the state of repeating up to 23 by increasing the number from 00 to 1 for each turn-on time. If it is kept on for 2 seconds or more, the start time of late night time zone (e.g., 22) is set (step 46), and the setting / memory switch (SW1) is turned on (step 47). The right two digits of the second display portion 12 blink to set the end time of the next late night time zone (step 48).

After selecting the desired time 08 as the number conversion switch SW2 (step 49) in the same manner as above, and turning on the setting / memory switch SW1 (step 50), it is possible to set the start time of the weekly time zone. 3, the left two digits of the display portion 12 flash (step 51), and allow the user to select the desired time (e.g. 08) with the number conversion switch SW2 in the same way (step 52).

If the selection / memory switch SW1 is notified that the selection is completed (step 53), the right two digits of the third display unit 14 blink to set the end time (step 54), and the numerical conversion switch (SW2). Is used to select the same desired time (e.g., 18) (step 55), and recognizes that the setting / memory switch SW1 is completed (step 56).

Next, the left two digits of the fourth display unit 16 are blinked to select the start time of the evening zone (step 57), and the same desired time (for example, 18) is selected using the numerical conversion switch SW2 ( Step 58), the setting / memory switch SW1 is inputted to the completion state of the setting (step 59).

Then, if it recognizes this, it blinks two digits on the right to select the end time of the evening time step (step 60), and then selects the desired time (eg 22) with the number conversion switch SW2 as described above (step 61). The setting / memory switch SW1 is notified (step 62), and in the state of recognition, the left two digits of the fifth display unit 18 blink to set the start time of the reverse measurement time zone (step 63).

When the user selects the desired time (e.g. 08) using the numerical conversion switch (SW2) (step 64) and informs it of the setting / memory switch (SW1) (step 65), the power factor is measured by blinking the two digits on the right side. By selecting the end time of the time zone (step 66), the desired time (e.g. 22) is also selected by the number conversion switch SW2 (step 67), and then recognized by the setting / memory switch SW1 (step 68). ).

In this case, since the current day of the week is selected, SUN, MON, TUE, WED, THU, FRI, and SAT are flashed and expressed on the ninth display unit 26 by turning on the number conversion switch SW2. The display is sequentially displayed according to the number of times the switch SW2 is turned on. If the switch SW2 is continuously turned on, the switch SW2 is selected to be converted into two in one second (step 69). (The state that represents the day of the week on the screen configuration is

Becomes

After the user selects the correct day of the week (step 70) and turns on the setting / memory switch (SW2) (step 71), the four digits for the year display on the tenth display unit 28 blink (step 72), and the user Since the year display from 1991 to 2011 is displayed in sequence as the conversion switch SW2 is turned on, the correct year display is selected (step 73), and the setting / memory switch SW1 is turned on (step 74). After blinking the left two digits of the display unit 30 to select the current month (step 75), the user selects one of the months 01 to 12 (e.g. 12) by the number conversion switch SW2 (step 76). , The setting / memory switch SW1 is turned on (step 77), so that the right two digits blink to select work (step 78).

As the user turns on the number conversion switch (SW2) one by one, 1,3,5,7,8,10, December out of 31 days, 4,6,9, November out of 30 days, Is selected from 28 days in February of 28 years (step 79), and when the setting / memory switch SW1 is turned on (step 80), the twelfth display unit 32 blinks to select a meter reading date. (Step 81), the desired date is selected from 01 to 28 as the number conversion switch SW2 (step 82), and the setting / memory switch SW1 is notified of this (step 83).

Therefore, by blinking the left two digits of the thirteenth display section 34 to set the current hour (step 84), and selecting the correct number from 00 to 23 as the number conversion switch SW2 (step 85), setting / memory After the switch SW1 is notified (step 86), the right two digits blink again (step 87) to select the correct minute from 00 to 59 (step 88). When the setting / memory switch SW1 is notified that the setting is completed as described above (step 89), the colon of the thirteenth display unit 34 blinks to start counting seconds (step 90), and then displays the setting screen ( Step 91), the current screen is briefly shown (step 92), and then ends.

If the setting is not completed within a predetermined time (about 5 minutes) (step 93), all of the set values are canceled (step 94), and then returned to the beginning.

Therefore, according to the time setting method of the power supply and precision precision multimeter of the present invention, when the user first installs, resets and restarts the operation, or changes the time, the setting / memory switch of the switch operation unit 8 You can easily set or change the setting only with (SW1) and numeric conversion switch (SW2). It can be seen that the setting is possible.

Claims (4)

In the time setting method of the power supply-demand precision composite instrument, the hardware control processing unit 6 checks the state of turning on the setting / memory switch SW1 of the switch operation unit 6 once, and the setting / memory switch described above. (SW1) is turned on again so that the hardware control processor 6 blinks the left two digits of the second display unit 12 so that the start time of the late night time zone can be set by the numerical conversion switch SW2. When the setting / memory switch SW1 is turned on again, the hardware control processor 6 blinks the right two digits of the second display part 12 so that the end time of the late night time zone can be set by the numerical conversion switch SW2. And turning on the setting / memory switch SW1 again, the hardware control processing unit 6 blinks the left two digits of the third display unit 14 so that the numeric conversion switch SW2 is used in the daytime mode. Start time And turning on the setting / memory switch SW1 again, the hardware control processor 6 flashes the right two digits of the third display unit 14 to the number conversion switch SW2. Allowing the end time of the weekly time zone to be set, and when the setting / memory switch SW1 is turned on again, the hardware control processor 6 blinks the left two digits of the fourth display unit 16 to convert the number. Enabling setting of the start time of the evening time with the switch SW2; and turning on the setting / memory switch SW1 again, the hardware control processor 6 blinks the right two digits of the fourth display unit 16. FIG. And setting the end time of the evening time with the numerical conversion switch SW2, and turning on the setting / memory switch SW1 again, the hardware control processing unit 6 of the fifth display unit 18 2 characters left Flashing the cursor to set the start time of the reverse measurement time zone with the number conversion switch SW2 above, and when the setting / memory switch SW1 is turned on again, the hardware control processing unit 6 returns the fifth time. Flashing the right two digits of the display unit 18 so that the end time of the power factor measurement time zone can be set by the numeric conversion switch SW2; and when the setting / memory switch SW1 is turned on again, the hardware control processing unit ( 6), the third digit of the ninth display unit 26 blinks so that the day of the week can be selected according to the number of times the number conversion switch SW2 is turned on, and the setting / memory switch SW1 is turned on again. And blinking the four digits of the tenth display unit 28 in the hardware control processing unit 6 so that the current year can be set by the numerical conversion switch SW2, and the setting / memory switch SW1 is turned off. Come again Key surface hardware control processing unit 6 to flash the left two digits of the eleventh display unit 30 so that the current month can be set by the numeric conversion switch SW2, and the setting / memory switch SW1. To turn on again, the hardware control processor 6 flashes the right two digits of the eleventh display unit 30 so that the present day can be set by the number conversion switch SW2, and the setting / memory is performed. When the switch SW1 is turned on again, the hardware control processor 6 blinks the two digits of the twelfth display part 32 so that the meter reading date can be set by the numerical conversion switch SW2, and the setting / memory described above. When the switch SW1 is turned on again, the hardware control processing unit 6 flashes the left two digits of the thirteenth display unit 34 so that the current time can be set by the number conversion switch SW2. Set / Memory Switch (SW1) Turning on again, the hardware control processor 6 flashes the right two digits of the eleventh display unit 30 so that the current minute can be set by the number conversion switch SW2; and the setting / memory switch described above. And finally (SW1) is performed by the steps of completing the setting in the hardware control processing unit (6) time setting method of the power supply precision precision meter. The method of claim 1, wherein the hardware control processor (6) performs the time setting mode only when the setting / memory switch (SW1) is turned on twice. The power supply and demand according to claim 1, wherein the hardware control processing unit (6) is configured to start the counting of seconds by blinking the colon of the thirteenth display unit (34) when the setting / memory switch (SW1) is finally turned on. Time setting method of precision multi-function instrument. According to claim 1, wherein the hardware control processing unit 6 is a precision power supply for power supply characterized in that if all the mode of time setting is not performed within a certain time to cancel all set values and to return to the initial state How to set the time.