KR20030035435A - thermal-storage electric boiler - Google Patents

Abstract

PURPOSE: A regeneration control system is provided to efficiently operate an electricity distribution facility by preventing the shortage of the capacity of a line and a transformer. CONSTITUTION: A regeneration control system comprises a time switch(10) counting time, a heating element(40) generating heat by using supplied power, a regenerative temperature controller(20) collecting the heat generated from the heating element and supplying temperature-controlled heat, a regeneration controller(30) automatically controlling the supply time of mid-night electricity serially connected to the regenerative temperature controller, a main switch(MSW1) switching for supplying power to the heating element, and input switches(SW1,SW2). The generation controller outputs a signal for controlling the heating element corresponding to the control algorithm embedded in a microcontroller(31) serially connected to the regenerative temperature controller.

Description

Heat storage control system {thermal-storage electric boiler}

The present invention relates to a heat storage control system. More particularly, a heat storage control algorithm is installed in a built-in microcontroller by adding a heat storage controller connected in series to a mechanical time switch and a heat storage temperature controller to a heat storage electric boiler. It is possible to expect efficient operation and cost reduction of distribution facilities by estimating the amount of heat used and automatically controlling the start time of heat storage by distributing the midnight electric power demand to suppress the occurrence of maximum electric power demand. The present invention relates to a heat storage control system.

In general, power is relatively inexpensive for load averaging by distributing power demand that is concentrated in specific time zones as part of the demand management policy, and increasing demand for late-night (10 pm to 8 am) hours with low electricity usage. It has operated a midnight electricity tariff system and has been spreading heat storage and refrigerated late night power equipment. However, as the penetration rate of regenerative late-night power equipment increased, the peak demand at night exceeded the weekly peak demand, causing another problem such as exceeding transformer and line capacity of the distribution line.

The most popular type of regenerative electric boilers among the regenerative triangular power equipments is the regenerative control system used in the past, which is supplied with a midnight power through a mechanical time switch and controls the on / off of the heating element by sensing the internal temperature of the boiler. Regenerative temperature controller is attached. However, as the existing heat storage control device starts to accumulate at about 22 o'clock when the time switch is turned on, all of the late-night power equipments currently in use in the heat storage are integrated into the heat storage in consideration of the error of the time switch. There is a concern that power demand peaks at about 23 o'clock, one hour after power supply starts, and a peak in power demand occurs during the winter night, not during the summer week.

The present invention is to solve such a conventional problem, its purpose is to add a separate heat storage control device in series with a mechanical time switch and a heat storage temperature controller installed in the control device of the midnight power saving device, the heat storage capacity and heat storage rate In this regard, the remaining heat storage rate, the heat storage rate of the next day, and the amount of heat used are estimated from the apparatus for automatically controlling the supply time of the deep-core power, thereby delaying the heat storage start time, thereby suppressing the occurrence of the maximum power demand at night.

1 is a connection configuration diagram of a heat storage control system according to an embodiment of the present invention.

2 is an operation flowchart of a heat storage control system according to an embodiment of the present invention.

Code descriptions for the main parts of the drawings

10; time switch 20; regenerative temperature controller

30; Thermal controller 31; Microcontroller

40; heating element MSW1; main switch

SW1, SW2; input switch

DETAILED DESCRIPTION Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. . Other objects, features, and operational advantages, including the purpose, working effects, and the like of the present invention will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only by this embodiment, Various changes and modifications are possible within the scope without departing from the technical spirit of the present invention, as well as other equivalent embodiments will be found.

1 is a connection configuration diagram of a heat storage control system according to an embodiment of the present invention, Figure 2 is an operation flowchart of a heat storage control system according to an embodiment of the present invention.

The present invention relates to an apparatus and a method for automatically controlling a late-night power supply time of a regenerative boiler and a hot water heater, as shown in FIG. 1 or FIG. The heating element 40 for generating heat by supplying, the heat storage temperature controller 20 for supplying a regulated temperature by collecting the heat generated by the heating element 40, and the late-night power connected in series to the heat storage temperature controller 20 The heat storage controller 30 which automatically adjusts the supply time, the main switch MSW1 for switching operation to supply power to the heating element 40, and the input switches SW1 and SW2 are connected.

The heat storage controller 30 is connected to the heat storage temperature controller 20 in series by inputting the on / off contact signal of the heater, which is the time switch 10 or the heating element 40, and the heat storage tank internal microcontroller 31. According to the control algorithm built in the signal to control the heating element 40 is to be output.

The heat storage controller 30 calculates a heat storage delay time according to a built-in program in which the microcontroller 31 is built to allow heat storage control.

The heat storage control program has two modes of initial operation mode and automatic control operation mode.

The initial operation mode is operated on the first day of boiler operation or on the day of initial and button operation. In this mode, the average temperature of the heat storage tank is measured and the heat storage is performed for the automatic control operation mode while operating the boiler by the heat storage temperature controller 20. Calculate the rate of heat storage temperature rise over time. The day after the operation in the initial mode is operated by the heat storage controller 30 and from this time it is operated in the automatic control operation mode. In the automatic control operation mode, the heat storage starts when the predicted delay time, which is calculated every 1 minute from the start of the deep-core power contract usage time, is less than or equal to '0'. At this time, the prediction delay time is calculated as follows.

Forecast delay time to be.

Above Is the estimated heat storage delay time, Is the elapsed time from measurement time to the measurement time Is the minute time from the start time of contract usage time to the end time of heat storage Is the average temperature of the heat storage tank at the end of heat storage on the previous day, Is the average temperature of the heat storage tank at the end of heat storage on the previous day, Is the average temperature rise rate during the day before heat storage time.

In the present invention, in addition to the 10-hour system (22 o'clock to 8 o'clock next day), the 7-hour system (24 o'clock to 7 o'clock the next day), 1 + 9 hour system (21 to 22 (1 hour) + 24 o'clock to the next o'clock (9 hours) There are two additional options: midnight power bill menu. It is determined by changing the set value of. Is the constant time in minutes from the start time of the contract usage time to the end time of the heat storage. Apply = 510.

When operating in 7 hours mode, allow for 60 minutes If you apply = 360 and operate in 1 + 9 hour mode, you have 9 hours Apply = 450. In this case, automatic control operation is prevented at the start time (21 ~ 22 o'clock), which is supplied only for the first hour.

On the other hand, the present invention according to the first night power charge menu selected by the user Set the value and enter the initial operation mode. In the initial operation mode, the heat storage control is performed only by the heat storage temperature controller, and the heat storage controller 30 internally calculates the heat storage rate. From the second day, the operation is performed in the automatic control operation mode by the heat storage controller 30 to calculate the heat storage delay time and control the heat storage operation. The average heat storage temperature increase rate per unit time after starting the heat storage is calculated as follows.

The heat storage temperature to be.

Above Is the average temperature of the heat storage tank at the time when electric power is supplied to the heating element 40, Is the time when the power of the heating element 40 is turned on or off.

In addition, the average temperature inside the heat storage tank is to be.

Above Is the temperature measured from the temperature sensor from the top of the heat storage tank to the bottom.

The present invention works as described above by adding a heat storage controller connected in series to a mechanical time switch and a heat storage temperature controller in a heat storage electric boiler, and equipped with a heat storage control algorithm in a built-in microcontroller to estimate the heat storage remaining amount, the next day heat release rate, and the amount of heat used. By automatically controlling the start time of the heat storage, it is possible to distribute the midnight power demand to suppress the occurrence of the maximum power demand, thereby preventing the shortage of the line and the transformer capacity of the distribution system, and to effectively operate the power distribution equipment and reduce the cost.

Claims (4)

A time switch 10 for counting a predetermined time, a heat generator 40 for generating heat by power supply, a heat storage temperature controller 20 for collecting heat generated from the heat generator 40 and supplying a regulated temperature; Heat storage for automatically adjusting the supply time of the late night power connected in series with the main switch (MSW1) and the input switch (SW1) (SW2) and the heat storage temperature controller 20 to supply power to the heating element (40) In the controller 30 is connected, the heat storage controller 30 is The heating element is connected to the heat storage temperature controller 20 by inputting an on / off contact signal and a heat storage tank internal temperature to the time switch 10 or the heating element 40 in accordance with a control algorithm embedded in the built-in microcontroller 31. A heat storage control device connected to control the 40. The control algorithm embedded in the microcontroller in the heat storage controller 30 operates on the first day of operation of the boiler or the day of operation of the button and the operation of the button and measures the average temperature of the heat storage tank while operating the boiler by the heat storage temperature controller 20. And the initial operation mode for calculating the heat storage temperature rise rate during the heat storage time, and the operation by the heat storage controller 30 from the day after the operation in the initial operation mode and from this time every one minute from the start of the planting power contract use time A heat storage control method in which an automatic control operation mode in which heat storage starts is set and controlled when the estimated delay time calculated is '0' or less. The method of claim 2, wherein the predicted delay time calculated in the automatic control operation mode is calculated. Regenerative control method to perform regenerative control by calculating by substituting to. The heat storage temperature increase rate calculated by the heat storage temperature controller in the initial operation mode is The average temperature inside the heat storage tank is Heat storage control method to perform the heat storage control by the operation. Where Is the estimated heat storage delay time, Is the elapsed time from measurement time to the measurement time Is the minute time from the start time of contract usage time to the end time of heat storage Is the average temperature of the heat storage tank at the end of heat storage on the previous day, Is the average temperature of the heat storage tank at the end of heat storage on the previous day, Is the average temperature rise rate during the day before heat storage time. Above Is the average temperature of the heat storage tank at the time when electric power is supplied to the heating element 40, Is the time when the power of the heating element 40 is turned on or off. Above Is the temperature measured from the temperature sensor from the top of the heat storage tank to the bottom.