JPH07104044B2 - Central control device for midnight power water heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a microcomputer controller included in a midnight power water heater provided for each door, indicating the start time of energization of a heating device for the night water power water heater provided for each door. Centralized control of the midnight power water heater to prevent all the midnight power water heaters from turning on at the same time during the midnight time, and to prevent a temporary drop in power during the midnight time as much as possible by centralized control based on information from The present invention relates to a control device.

[Prior Art] FIG. 3 is a block diagram showing a conventional midnight power water heater provided for each house in a house described in, for example, a technical manual of March 1986. In the figure, (1) indicates water supply. mouth,
(2) is a hot water supply port, (3) is a can body that stores hot water, and this can body (3) has a water supply port (1) on the lower side surface and an oil supply port (2) at the center of the upper surface. . (4) is a heating device provided at the bottom of the can for heating water in the can,
(5) is a temperature detector that detects the temperature of water in the can, (6) is a microcomputer controller that controls energization of the heating device (4), (7) is the power source of the heating device (4), and (8) is heating. A switch provided in a connection path between the device (4) and the power supply (8).

Next, the operation will be described based on the flowchart shown in FIG. If the water temperature inside the can detected by the temperature detector (5) is less than or equal to the set value, it is judged whether or not it is the midnight power time zone of 23:00 (step ST4-1), and it is the midnight power time zone. For example, based on the required amount of hot water and the supply water temperature, the required energization time of the heating device, and the energization start time calculated by calculating backward from this required energization time to reach the boiling temperature at 7 am in the early morning,
Calculate the boiling temperature with a microcomputer (step (ST4
-2), it is determined whether it is the energization start time (ST4-3), and if it is the energization start time, the energization of the heating device is started (step
ST4-4), it is determined whether boiling is completed (step ST4−
5) If the boiling is completed, the energization of the heating device is completed (step ST4-6).

[Problems to be Solved by the Invention] Since the conventional midnight power water heater is configured as described above, the energization start time is calculated for each of the midnight power water heaters provided for each house, and FIG. It does not consider the demand curve of the power load shown in. Therefore, energization of the midnight power water heater does not always occur during a time period when the power load is low (0:00 to 7:00 in FIG. 5), and the power load ratio (minimum power / peak power) is slightly improved. There was a problem.

[Means for Solving Problems] A central control device for a midnight power water heater according to the present invention is connected to a midnight power water heater provided for each house and is stored in an internal memory and a detection signal of a detector for external weather conditions. A central processing unit for calculating an energization start command for the heating device of the midnight power water heater provided for each door by a power load turn for each of various conditions and a signal from the microcomputer controller of the night power heater It is equipped with a centralized controller.

Further, the central processing unit predicts the power load curve for the day based on the external weather conditions, the power load pattern, and the signal from the microcomputer controller.

[Operation] The centralized controller in the present invention centrally controls a plurality of midnight power water heaters provided for each house, and also predicts data such as season, day of the week, and outside temperature conditions, and the midnight power water heaters for each house. Collect data on the required energization time, calculate how to generate the midnight power load for this day, and make the power load factor the maximum value, and issue a command to the midnight power water heater of each house. Thus, it is possible to control the minimum power load of the late-night power charge to be as large as possible, and the power load ratio is improved.

Embodiments of the Invention Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 in which the same parts as those in FIG.
(10) is a signal line connecting between the microcomputer controller (6) of the midnight power water heater (9) and the interface section (11) of each house, (12) is a detector of external weather conditions such as outside temperature, ( 13) is an internal memory that stores the power load pattern for each condition, and (14) is the interface unit (1
1) Signals from the microcomputer controller (6) of the midnight electric power water heater (9) provided for each house and external weather conditions from the detector (12) and internal memory (1)
A central processing unit that calculates an energization start command for the midnight power water heater (9) of each house by a signal from 3), and (15) is the interface unit (11), memory (13), central processing unit (14). ) Is a centralized controller consisting of.

Next, the operation of the above embodiment will be described with reference to the flowchart of FIG. First, it is judged whether or not the time is in the midnight power time zone (step ST2-1), and if it is in the midnight power time zone, the microcomputer controller (6) of the midnight power water heater (9) of each house is used for the required energization time and energization. The start time, the boiling temperature, etc. are calculated (step ST2-2), and the calculation result is transmitted from the microcomputer controller (6) to the centralized controller (15) (step ST2-3). The central controller (15) in the central processing unit (14) predicts a power load curve for the day from data such as season, day of the week, and external weather conditions (step ST2-4).

Then, the central processing unit (14) calculates the energization start time of the midnight power water heater (9) of each house in order to maximize the minimum power load (step ST2-5), and the calculated energization start time is calculated for each house. It is output to the midnight power water heater (9) (step ST2-6).

After that, the midnight power water heater (9) of each house determines by the microcomputer controller (6) whether or not it is the energization start command time (step ST2-7), and if it is the energization start command time, the heating device is turned on. Then, (step ST2-8), it is determined whether or not the set temperature is reached (step ST2-9), and if the set temperature is reached, the heating device is turned off (step ST2-10).

[Effects of the Invention] As described above, according to the present invention, the energization required time calculated by the microcomputer controller of the midnight power water heater provided for each house is transmitted to the central centralized controller, and the centralized central controller controls the centralized controller. While predicting the power demand curve, calculate the energization start time of each house's midnight power water heater, transmit this energization start time to each house's midnight power water heater, and based on this transmitted energization start time, each house's midnight Since the heating device of the electric water heater is configured to be turned on by the microcomputer controller, it is possible to control the daily midnight power load so that the minimum power load is as large as possible, which helps to improve the power load factor, and the power generation facility of the power company. It has the effect of enabling stable driving.

[Brief description of drawings]

FIG. 1 is a block diagram showing a centralized control device for a midnight power water heater according to the present invention, FIG. 2 is a flow chart for explaining the operation of the centralized control device for the midnight power water heater, and FIG. 3 is a conventional midnight power device. Fig. 4 is a configuration diagram of the water heater, Fig. 4 is a flow chart for explaining the operation of the conventional midnight power water heater, and Fig. 5 is a power load curve. In the figure, (4) is a heating device, (6) is a microcomputer controller, (9) is a midnight power water heater, (12) is a detector,
(13) is an internal memory, (14) is a central processing unit,
(15) is a centralized controller. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A midnight power water heater provided for each house, having a can body for storing hot water heated by a heating device and a microcomputer controller for controlling energization of the heating device according to the hot water temperature and an input signal from the outside. , The night-time electric power water heater provided for each of the units is connected to the detection signal of the detector of the external weather conditions and the power load pattern for each condition stored in the internal memory and the signal from the microcomputer controller of the night-time electric water heater. A central central controller having a central processing unit that calculates an energization start command for the heating device of the midnight power water heater provided for each house is provided, and the central processing unit has the detection signal and the power load pattern. , The power load curve is predicted based on the signal from the microcomputer controller, and based on the prediction, the minimum midnight power load is calculated. The centralized control device for the midnight power water heater, which controls so that the electric power load of the electric water heater is as large as possible.