KR0157644B1 - Data control method of watt hour meter - Google Patents

Abstract

The present invention relates to a data control method of a precision power supply device for power supply, and determines whether the amount of power pulse signal input from the power measuring unit is an effective power amount or an active power amount, According to the unit of time divided by demand time unit by 15 minute unit, various accumulated power amount, maximum demand power amount and demand power amount of active power divided by power are calculated.In case of reactive power, power factor of reactive power distributed in power factor measurement time zone is calculated. The data of reactive power amount for power factor measurement of the effective power amount is calculated while calculating the data of reactive power amount for measurement.

Description

Data Control Method of Electric Power Supply Precision Complex Instruments

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

2 is a front view showing a state of the display unit of the present invention.

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

* Explanation of symbols for main parts of the drawings

2: central control processor 3, 7: clock generator

6 hardware control processing unit 8 switch operation unit

The present invention relates to a data control method of a precision power supply device for power supply, and in particular, installed in a commercial or industrial consumer, the user can use the amount of precision power for each time zone, effective power for power factor measurement, reactive power for power factor measurement, and demand power for each time zone. The data control method of the power supply precision multi-instrument meter to be known exactly in the

Here, the power supply precision complex meter measures the precise power amount, the effective power amount for power factor measurement, the reactive power amount for power factor measurement, and the maximum demand power in combination with the instrument current transformer and the transformer to inform the user of the correct value.

Therefore, in addition to the function of the electricity meter for measuring the effective power amount, it was necessary to have a combination of the functions of the reactive electricity meter and the time switch to measure the daily power amount and the maximum demand power amount.

However, conventionally, there is a hassle of installing a wattmeter to measure the amount of power (effective power) used by the customer, and additionally installing a separate device to measure the power factor or other precise power supply. Since there is little knowledge of the amount of electricity demanded over time or its cumulative value, there is a disadvantage such as the inability to plan the electricity use.

Accordingly, according to the present invention, the data control of the power supply and precision precision instrument for accurately processing data on the demand power amount by time, cumulative power amount by time, effective power amount by power factor measurement, and reactive power amount by power factor measurement using the measured power amount pulse signal Its purpose is to provide a method.

To this end, the present invention determines whether the power pulse signal input from the power measuring unit is the effective power or the reactive power, and the time divided by the time period divided by the time zone and demand time units of 15 minutes until the effective power amount Various cumulative electric powers, maximum demand electric powers, and demand electric powers of the divided effective electric powers are calculated according to the unit, and the data of the reactive power for the power factor measurement of the effective electric power is calculated while calculating the data of the reactive electric power.

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

Current power pulse signal (WP), reactive power pulse signal (QP) and phase value signals according to instantaneous power in a current measuring unit (not shown in the drawing) that receives a voltage value of a current value from a current transformer and a transformer (not shown). PE), and

An input compensator for receiving an active power pulse signal WP, an reactive power pulse signal QP, and a phase PE signal PE from the power measuring unit, and compensating for a change value caused by a weakened decrease and noise during signal transmission; 1) and time setting from the clock generator 3 while receiving the normal effective power pulse signal WP, the phase value signal PE and the reactive power pulse signal QP via the input compensator 1; It calculates the value of active power, reactive power and power factor by inputting the clock and outputs data according to cumulative power by time, effective power by power factor measurement, reactive power by power factor measurement, demand power by time and maximum demand by time. A central control unit (2),

A time invalid pulse compensation unit 4 which receives an invalid pulse compensation value from the central control unit 2 and outputs an invalid pulse compensation signal to the power measurement unit;

A time effective pulse compensation unit 5 for receiving an effective pulse compensation value from the central control processor 2 and outputting an effective pulse compensation signal to the power measurement unit;

Receiving the time setting clock from the clock generator 7 while receiving the data of the amount of power from the central control processing unit 2, the time of the current time and the time zone is displayed, and the setting / memory switch and the number of the switch operation unit 8 A hardware control processor 6 which receives a control signal according to a user's processing operation through a conversion switch and a maximum demand power return switch, and outputs various display signals;

The operating state of the electricity meter while selectively flashing the corresponding LED of the first display unit 10 while receiving the operation display signal, the reactive power meter operation display signal, the non-measurement display signal, and the power failure display signal of the electricity meter from the hardware control processor 6, respectively. (kwh), the first display driver 9 for notifying whether the reactive power meter (kva rh), the non-metered (or reverse current flow) state (non-metered), or a power failure state (blackout);

The hardware control processor 6 receives a display signal of the accumulated power amount up to the present (measurement date) of the late night time zone of 22:00 08:00 and receives the accumulated power amount of the weak time zone up to now through the second display unit 12. A second display driving unit 11 notified by the number of digits,

The display signal of the accumulated power amount from the hardware control processor 6 to the present (measurement date) of the day time zone of 08:00 18:00 is inputted, and the accumulated power amount of the daytime time zone up to the present is displayed through the third display unit 14. A third display driver 13 notified by six digits,

The display signal for the accumulated power amount from the hardware control processing unit 6 to the present (measurement date) of the evening time of 18:00 22:00 is inputted, and the accumulated power amount of the evening time zone to the present time is received through the fourth display unit 16. A fourth display driver 15 notified by six digits,

A fifth display driver 17 which receives the power factor measurement signal for power factor measurement from the hardware processor 6 and informs the cumulative amount of power in the power factor measurement time period by the six-digit number through the fifth display unit 18; ,

The sixth display driver 19 which receives the reactive power amount display signal for power factor measurement from the hardware control processor 6 and notifies the cumulative power amount of the power factor measurement time to the present by six digits through the sixth display driver 20. )Wow,

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 of 08:00 18:00 and the current time zone to the present time after the last reading through the eighth display driver 24. An eighth display driver 23 for notifying the demand power for the demand time or the cumulative maximum power demand for the meter reading day with four digits;

The maximum demand power of the daytime time from the hardware control processing unit 6 to 08:00 18:00 is input through the ninth display unit 26, and the maximum demand power of the daytime time until the present time is 4 digits. A ninth display driver 25 informed by numbers;

The maximum demand power of the evening time from the hardware control processing unit 6 is input to the evening time of 18:00 and 22:00, and the maximum demand power of the evening time to the present time after the meter reading through the tenth display unit 28 is 4 digits. A tenth display driver 27 informed by a number;

Receives the demand power display signal for the demand time of the evening time of 18:00 22:00 from the hardware control processing unit 6 through the eleventh display unit 30, the current demand of the evening time until the present time An eleventh display driver 29 for notifying the demand power for the time zone or the cumulative maximum power demand for the meter reading day with four digits;

A twelfth display for receiving the time display signal or the power factor display signal from the hardware control processor 6 and notifying the elapsed time of the current hanging time in units of 15 minutes or the power factor of 100 fractions in two digits through the twelfth display unit 32. The driving unit 31,

The display signal is inputted from the hardware control processor 6 to the thirteenth display driver 33 informing the thirteenth display unit 34 of the current hour / minute or month / day to be read. will be.

The effective power pulse signal, reactive power pulse signal, and phase value measured by the power measurement unit using the current value detected by the current transformer and the voltage value detected by the instrument transformer are used for the data control method of the power supply precision composite instrument of the present invention configured as described above. The hardware control data signal of the amount of power measured by time zone and type by receiving the clock for setting the time from the clock generator 3 in the central control processor 2 receiving the signal through the input compensator 1. The processing unit 2 receives the time setting clock from the clock generator 3 and outputs a data signal of the amount of power measured for each time zone and type to the hardware control processing unit 6 to display the first to thirteenth display units 10. Through (12), (14), (16), (18), (20), (22), (24), (26), (28), (30), (34), The hardware control processing unit (6) is timed through the clock generator (7) Provides accurate time information to the central control unit 2 by receiving a fixed clock, and assists the weighing operation when the weighing operation in the central control unit 2 is overwhelming (over-processing state of data) or malfunctions. While the first to the thirteenth display driver 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29 ), (31) and (33).

When the power amount pulse signal is input through the input compensation unit 1 (step 40), it is checked whether it is in a no-load state (step 41), and in the case of the no-load state, the non-measured state is displayed through the first display driver 9 ( In step 42), it is checked that the active power pulse signal or the effective power pulse signal is applied because the load state is not the no load state (step 43).

When the active power pulse signal is input, the time data is demanded every 15 minutes (00 minutes, 15 minutes, 30 minutes and 45 minutes from 15 minutes according to the clock for setting the time from the clock generators (3) and (7). Time divided into units (step 44), and are divided into three types of time zones: midnight hours from 22:00 to 08:00, day time from 08:00 to 18:00, and evening time from 18:00 to 22:00 (step 45). In step 46, the effective power amount pulse signal is divided and measured by the amount of power per unit time of the input effective power amount.

Therefore, if the current time is the late night time zone (step 47), the cumulative calculation of the amount of power input per unit time input during the late night time (step 48), the cumulative value is displayed on the second display driver 12 through the second display driver 11 While storing (step 49), if the current time is in the day time zone (step 50), and accumulates the amount of power per unit time input during the day time (step 51), the third display unit (13) through the third display driver (13) 14, the cumulative value is displayed and stored (step 52), and the cumulative value for each demand time unit (15 minutes) is displayed as the current demand power amount in the day time period of the eighth display unit 24 through the eighth display driver 23. (Step 53), and compare the demand power of the day time period after the last reading (step 54) to the ninth display part 26 through the ninth display driver 25 as the maximum power demand of the day time period. Save while displaying (step 55).

If the current time is in the evening time (step 56), the amount of power per unit time input during the evening time is cumulatively calculated (step 57), and stored while displaying the accumulated value on the fourth display unit 16 through the fourth display driver 15. At the same time (step 58), the cumulative value every 15 minutes of the demand time unit is displayed on the eleventh display unit 30 as the current demand power in the evening time through the eleventh display driver 29 (step 59), and the last meter reading Thereafter, the demand power of the daytime period is compared with each other (step 60), and the maximum value is stored while displaying on the tenth display unit 28 through the tenth display driver 27 as the maximum demand power of the evening time (step 61). .

If the power factor measurement time zone is arbitrarily set in comparison with the present time displayed on the thirteenth display unit 34 by the thirteenth display driver 33 (step 62), the amount of power per unit time inputted during that time is accumulated and calculated ( Step 63), the effective power amount for power factor measurement is displayed on the fifth display unit 18 via the fifth display driver 17 (step 64).

On the other hand, if the reactive power pulse signal is detected in step 43, it is divided and metered into the reactive power amount per unit time (step 65), and then the cumulative operation is performed (step 66), as long as it is input in the arbitrarily set power factor measurement time zone (step 66). The reactive power for power factor measurement is displayed on the sixth display unit 20 through the sixth display driver 19 (step 68).

Therefore, according to the data control method of the power supply and precision precision multimeter of the present invention, the central control processor 2 and the hardware control processor 6 which receive the signals of the effective power pulse, the reactive power pulse and the phase value calculated by the power measuring unit 6 ) Complementary operation, if the power pulse signal is input, check whether there is no load or load state, and after confirming the application of active power or reactive power again, divide the power amount per unit time in the case of active power, Depending on the amount of time dispensed and the demand time in 15-minute increments, the cumulative amount of power in the late-night time zone, the cumulative amount of power in the day time zone, the amount of demand in the day time zone, the maximum demand in the day time, the cumulative power in the evening time, the demand in the evening time, the maximum in the evening time It displays and saves the demanded power and the effective power for power factor measurement. If the ryeokryang is one according to input by to store and display the power factor reactive energy measuring electric energy to accurately quantify the different types of energy over time.

Claims (1)

In the data control method of the power supply precision complex meter which receives the power amount pulse signal from the power measurement unit and divides the time into the time zone and accumulates the accumulated power amount, the power amount pulse signal is input through the input compensation unit 1. Checking whether the central processing unit 2 receives the no-load state and displaying the same through the first display unit 9; and if the non-loading state is not loaded, the central processing unit 2 again checks whether the effective power pulse or the reactive power pulse is applied. And dividing the time into the three time zones of the late night time zone, the day time zone, and the evening time in the central processing unit 2, and then distributing the power into each unit time zone, and the amount of power from the central processing unit 2 as the time zone. Displaying and storing the maximum demand power in the daytime and evening time, and in the case of reactive power, the central processing unit (2). The data control method of the power supply and precision precision meter is performed in the step of distributing the reactive power per unit time and accumulating and calculating the reactive power per unit time in the power factor measurement time zone to display and drive the reactive power amount for power factor measurement. .