KR100360967B1 - Automatic water refilling system through whole consumption analysis and the method of the same - Google Patents

Abstract

The present invention relates to an apparatus and a method for automatically adjusting the water level / water pressure in the tank by the power load characteristics analysis, in particular the fluid in the tank or various tanks using the power in the time of the power load decreases during the day The present invention relates to an automatic water level / hydraulic pressure regulating device and a method thereof by analyzing a power load characteristic to be supplied.

The present invention is a water level detector for detecting the water level from the water tank system used for water supply, sewage or sewage treatment system, a power consumption detector for detecting the amount of power consumed during the day and outputting a signal, and periodically from the power consumption detector A control unit which detects the power load pattern flowing into the controller, sends a DC signal to adjust the water level according to the power load pattern after the signal detected by the water level detection unit is input, and a driving unit driven by the signal sent from the controller And a switching unit for controlling an AC current supplied to the driving unit by a DC signal sent from the control unit, and suppressing driving of the driving unit when the power consumption pattern input from the power consumption detecting unit to the control unit is a high load. By power load characteristic analysis, characterized in that The water level / hydraulic pressure automatic control device in a tank is a summary.

Description

Automatic water refilling system through whole consumption analysis and the method of the same}

The present invention relates to an apparatus and a method for automatically adjusting the water level / water pressure in the tank by the power load characteristics analysis, in particular, the fluid in the tank or various tanks using the power in the time of the power load decreases during the day The present invention relates to a water level / water pressure automatic control device and a method thereof in a tank by analyzing a power load characteristic for driving a motor of a pump to supply.

Looking at the existing power consumption load characteristics daily, the phenomenon of low load is repeated every time during lunch time. However, efforts to control the water level of the water tank or the sewage tank using the surplus power have been insufficient.

In fact, there is a problem that power consumption is biased in one direction when viewed nationwide by driving the dynamometer unintentionally when the position of the tank falls to a low level rather than considering the power consumption load pattern. As a result, power suppliers must over-invest in the basic facilities, such as installing new transmission and distribution facilities that exceed the unbalanced peak power requirements, and consumers must consume consumption that does not take advantage of the time-differentiated electricity tariff system. There is a problem that repeats the absurdity.

The present invention is to solve the above-mentioned problems, the water level in the tank by power load characteristics analysis that can improve the efficiency of power consumption by driving a pump motor for supplying water to the tank at a time of low power consumption during the day And a pressure regulating device and method.

The above object is a water level detector for detecting the water level from the water tank system used for water supply, sewage or sewage treatment system, a power consumption detector for detecting the amount of power consumed during the day and outputting a signal; The controller is configured to detect a power load pattern that is periodically introduced and to transmit a DC signal to adjust the water level according to the power load pattern after the signal detected by the water level detector is input. A driving unit and a switching unit for controlling the AC current supplied to the driving unit by a direct current signal sent from the control unit, the drive of the driving unit when the power consumption pattern input from the power consumption detection unit to the control unit is a high load This reduces power consumption during high load periods. It is achieved by the water level / water pressure automatic control device in the tank by the power load characteristics characterized in that.

In addition, the present invention is to detect the water level from the water tank system used for water supply, sewerage or sewage treatment system, the step of detecting the power load pattern consumed during the day, and the power load pattern when the detected water level is low water level Driving the pump motor to maintain the minimum safety level irrespective of the level, and when the detected water level is above the medium level, driving the pump motor only when the power load is low to supply water to the tank, In many cases, it is achieved by a method for automatically adjusting the water level / water pressure in the tank by analyzing the power load characteristics, characterized in that the step consisting of suppressing the driving of the pump motor.

1 is a view for showing the configuration of the present invention.

2 is a view for explaining a sensor array method according to the present invention.

3 is a view showing a state in which water level is sensed by the water.

4 is a graph showing a load curve in a lunch time zone.

<Description of the symbols for the main parts of the drawings>

10: control unit (micro controller) 20: water level detection unit

30: power consumption detector (digital electricity meter) 40: pump motor

50: switching unit

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

1 is a view for showing the configuration of the present invention, Figure 2 is a view for explaining a sensor array method according to the present invention, Figure 3 is a view showing a state in which the water level due to the water is sensed.

As shown in FIG. 1, the present invention can be largely divided into a digital power meter, which is a water level detector 20, a controller 10, a driver 40, and a power consumption detector 30.

The water tank in the water level detection unit 20 is a state in which a sensor decoder is attached to a water tank installed in an industrial and residential complex. Such a sensor decoder transfers a detected signal to the controller 10 using a horizontal / vertical sensor as shown in FIG. 2 as a basis. In addition, the sensor attachment position of the water tank can be divided into high water level, medium water level, and low water level, but the setting of the medium water level is below the normal half. Here, the sensor decoder detects the water level by installing the sensor vertically or horizontally. There is a horizontal / vertical sensor array method for detecting water level and a detection method using a water level sensor that detects the water level by using a beret. In the vertical sensor arrangement, a plurality of water level sensors are installed on the wall of the tank, and the water level is detected through the signal transmitted from the water level sensor. Next, the sensor is equipped with a lever so that it can rotate, and one side of the sensor has a smaller specific gravity than water. It is a method to detect the level of water by connecting the beret floating above the surface and installing the water level measurement controller at the other end to detect the signal of the controller linked according to the water level. It is also possible to use a method of mechanically connecting and opening and closing the water gate according to the water level. On the other hand, a data reception interrupt from the digital electricity meter, which is the power consumption detector 30, sends an ACK signal to the electricity meter according to the incoming signal and completes data reception. Clear the receive complete bit to set the next data inflow. The data from the digital electricity meter is stored in the memory device along with the time information and calculates a change in comparison with previous data.

In general, the determination of whether the change trend continues to T + 1 ▲ t, 2 ▲ t, 3 ▲ t, 4 ▲ t..10 ▲ t is based on the first 10 days of each month. The transmission signal transmitted from the digital power meter may be viewed as an interrupt method when viewed from the main system or a polling method when viewed from the digital power meter 30.

The method of data transmitted from the power consumption detection unit 30 or transmitted to the water tank control system also follows the RS232C protocol, but in some cases, may be directly installed by sensor encoding. However, RS232c is preferred for problems such as distance.

The control unit 10 serving as the main system requests the information on a time basis determined by the water tank control system. This is the polling method when viewed from the main system side. However, in the tank control system, special cases can interrupt the main system. As a result, an understanding of the control system between other systems can be obtained and it can act as an active response system. This case is mentioned later.

As described above, the load curve is formed, and when the low load pattern is induced, the current level information is received from the request sensor by the level measurement controller, which is another system component.

According to the defined mode of action for each level, the surface ascending operation is performed as long as the main system permits, up to the section of the power operation category. On the contrary, if the water level rise requirement is not met, the system actively requests the sump level information and executes the water level drop action to maximize the average load generation. However, in the case of water tanks, the level of water tanks is almost rare at noon. In general, driving a sewage tank dynamometer uses a late night time.

In other cases, when a water tank dynamometer is considered to be under control at the same time as a low load, the operation is reserved or preceded according to priority (water level rise-> sewer level fall). The drive of two dynamometers at the same time is controlled by automatic control system according to the degree of load pattern.

The control unit 40, which is the main system, may be composed of a general-purpose and a large-capacity system. The separation of uses is as follows.

General home: No auxiliary memory (with main memory)-> Imports about 10 days of back data

Group dwelling place (industrial and housing complex): With auxiliary memory (with extended memory)-> 1 month worth of data is taken as back data

The control unit 10 or the microcontroller is an element used in home appliances or industrial controllers as a general-purpose one-chip of the Intel series. The control unit 10 may have an EPROM or may be externally attached. Here, an external type is selected. The controller 10 clears the initial data in accordance with the date at the start. The basic date data is set in the same manner as the digital power meter which is the power consumption detector 30 described later. The main controller, the microcontroller, basically receives or transmits signals in two directions.

The microcontroller, which is the control unit 10, belongs to the 8051 series, but the C-MOS type low power 87C51 is applied to facilitate program upgrade. Program upgrades require that the connected dynamometer be powered out for only a short time, but the replacement time is so short that there is very little risk of causing special losses. Practically, the control of the motor, the dynamometer that is in charge of the fluid flow of the water tank, the sewage tank or the sewage tank, basically separates the power from the system. It is a measure to fundamentally eliminate the risk of damage to the power control system due to the inflow of reverse current due to the same power usage.

In addition, a battery pack that can prevent the evaporation of system data is installed in the place where the risk of unexpected power failure is many.

The digital power meter, which is a power consumption detector 30, is a device similar in meaning to a power meter currently used in various fields, but the result can be transmitted as a digital data to a general-purpose controller according to an interfacing. Explain.

The digital power meter, which is the power consumption detector 30, is a device that accumulates power consumption, and its operation type is a digital type. Unlike the conventional analog type, the background of the introduction is that the power consumption data can be digitized and linked with other systems.

In the present invention, the digital power meter is configured to transmit a power amount value using a buffer capable of waiting for the date, time, and power meter expression to be transmitted to the main system. The digital electricity meter equalizes basic information with the control unit 10, which is the main system, at the time when the date changes, and transmits the power consumption generated thereafter to the main system once every predetermined time. At this time, the electricity meter transmits the information according to the transfer control agreement with the control unit 1, which is the main system. As in the block diagram, the measurement data is stored in the buffer-> BUFFER FULL BIT SET-> Interrupt to the system-> Hand Repeat the steps of Shaking-> Buffer Data Transfer-> Buffer Clear Set-> Transfer Measurement Data Buffer. Data transmission protocol uses RX / TX, DCT, DTR, GND line in existing RS232C transmission line. If DCT is 0, the data flowing to RX is recognized as a command. If DCT is 1, the data flowing to RX is pure data. In general, the timing should be prior to the DCT signal. The same holds true for DTR.

In the absence of such a serial communication function in the conventional digital electricity meter, the present invention will attach a separate controller for serial communication to establish a smooth communication environment with the main system controller.

On the other hand, the AC current supplied to the pump motor 40 which is the above-described driving unit 40 is supplied as the SCR in the switching unit 50 is turned on. The driving unit 40, that is, the pump motor 40 is an electric motor that operates according to a command of the microcontroller, which is the control unit 10, and is a device that enables the tank surface to rise. The device is equipped with a relay and is electrically isolated from the microcontroller, which is essentially the controller 10.

Therefore, the power separation used the relay of the SSR system. As a result, the three-phase AC motor is driven by the active high signal of the microcontroller 10. The control system element flowing into the microcontroller 10 ends the shift of the electric system with the drive time on the assumption that the drive time and the drive speed or the power are fixed in principle.

Water level control of each tank is realized by arrangement of the columns or the rows of the sensors. The part requiring fine control of the water level arranges the address lines by a multiplier of two depending on the number. In the present invention, since the water source control system was considered as a representative example, the recognition sensor was arranged in the horizontal direction because the fine adjustment was not necessary. Considering the difficulty of the horizontal level of the water tank, the sensor installation of the same water surface was installed in a zigzag and up and down intersection with 5 centimeters of fluctuation, and a total of 24 sensors were installed with 8 sensors for each water level. Therefore, since the decoder is made with a multiplier of two, distribution of six address lines is required.

Figure 4 is a graph showing the load curve of the lunch time, the arrangement of the sensors in consideration of the case where the water level is considered important (waste water) and the sewage water level becomes an important management point (waterworks) according to the nature of the tank Different ranking. In addition, in order to determine the water level of the apparatus for adjusting the water tank using the current tank, the sensor of the current tank is simply installed in FIG. 3 to transfer the sleep information to the main controller.

As an element for realizing the present invention, a digital power meter, which is a first power consumption detector 30, is installed. The digital electricity meter can be used to install additional devices for data transfer and devices that can output the data format proposed by the inventors from the beginning. Can be mentioned.

The power fluctuation of the digital electricity meter is monitored at regular intervals by the microcontroller 10 which is the controller 10. In the case of 8051, the available ports are divided into three groups, so input to the basic port is possible, but communication with the microcontroller is carried out using a communication method that complies with the 8255 and RS232C communication protocols for the address line for extensibility. The microcontroller monitors the power load patterns regularly coming from the digital meter and connects to the low load period to recognize the tank level from the sensor and short the SSR switch for the required time to keep the tank level at the top. On the contrary, in the case of a high load pattern, but the water tank falls below the middle, the microcontroller 10 raises the water level to the middle stage of the short circuit by the set priority. As the purpose is to keep the overall load pattern constant by suppressing power consumption during high load periods, the safety level can be set individually according to the business or commercial purpose. In addition, the system port for connecting other dynamometers for the extended use of the system is expanded to take into consideration the versatility to bring the water, sewage and sewage treatment dynamometers to the automatic control system. The micro system gives each dynamometer a unique control priority to prevent crosstalk to the dynamometer.

On the other hand, the water level detection unit (WATER LEVEL METER 20) is the main system control unit and the sleep information of the tank is transmitted to the control unit 10 of the main system in the following two ways.

1) Normal: Low and medium water level at low load

In this case, the level check of the water level of the sensor is performed at the regular request of the control unit 10 which is the main system. Transfer of measurements is usually done per minute.

2) In case of emergency: When the water level drops to low level regardless of time, make an interrupt call to the main system and drive the dynamometer to the minimum safety level.

That is, the present invention focuses on the effective use of surplus power through the analysis of power patterns throughout the day, and among them, the power that is biased for each time zone by compensating the water level control of the tank tank in the industrial / commercial and residential complexes through the automatic control system at a low load time It is to convert the load pattern into an economical consumption pattern.

FIG. 4 is a graph showing a load curve of a lunch time zone and a mean performance during the peak peak of 5 days in July-August 98. As shown in FIG. 93% of the time. As a concrete figure, the 12-13 o'clock power load of 1998 was 133-235 million kilowatts lower, and the lowest load was shown around 4-5 o'clock in the morning to improve the load fluctuation load during the lunch time and the peak load rate improvement in the early morning time. The importance of improvement on the proper method of demand for electricity remaining, such as the creation of new loads, was recognized, but no active methodology on the leveling of power usage was raised.

In order to improve this problem, if the system proposed by the present invention is implemented in parallel with the "Comprehensive Contract Apartment Two-Paid System", the charge for the lunch time zone will be as low as 17 won per KWH and less than half in the summer. It is available.

In parallel with the restructuring of the power industry, the following tariff system, which is being pursued by the Ministry of Commerce, Industry and Energy, is shown below in Table 1.

Current rate system [industrial (A) choice 1 high pressure A standard]

Base rate Electricity charge (KRW) slot Summer season Spring and autumn Winter season 3,960 Lunch time (additional) 26.6 26.2 26.2 Other time (current) 57.1 43.2 46.3

The above table shows that the electricity bill is cheaper by about 46% in summer, which is more economical in winter, and when power is used in the low load pattern, active power can be used at low cost for the first consumer. For the power supplier, it will be able to gain two trillion won to suppress the peak peak demand. In fact, the number of lakes inhabiting the total contracted apartment is 6,400 as of 1999, and the number of households is about 3.2 million. The number of customers who use industrial electricity for other facilities such as sewage pumps can calculate the economic benefits of Nationally, the estimated sales of apartment rooftop water tank electricity sales are 158,606,312 KWH per month. Therefore, if you calculate by time zone

158,606,312 / 720 (24 * 30) = 220,287 KW .... 1)

When calculating the average amount of power over time as 7% excess power compared to the peak of low load period

220.287KW * 0.07 = 15,420KW .......... 2)

If it is calculated in a month unit, it is assumed that 15,420KW * 30 = 462,600KW was shifted to the low load pattern during peak period.

Importantly, the economic analysis of investment hedging by peak suppression

Evasion cost formula: Peak suppression amount x Equipment avoidance cost (LNG complex + transmission and distribution facility)

= 462,600 KW X 171,605 (KW / YEAR) WON

793.81 billion won

Considering the avoidance costs associated with peak suppression, as well as the nature of water use in the morning hours, the lowest load rate improvement typically achieved between 4-5 am can be achieved.

For example, the total distribution of constant + sewage in April 1999 was 13.4 billion, considering that the ratio of constant + sewage: street light is 9: 1. At least 70% of the power used for water and sewage septic tanks can be transferred to the midnight and lunch time periods, resulting in savings of 40%.

13.4 billion X 0.9 X 0.7 X 0.4 = 3.5 billion

Therefore, considering the relatively low spring electricity use, it is possible to expect a reduction in electricity usage fee of at least 45 billion won per year for electric power used in water and septic tanks.

Finally, when there is an economic effect of KRW 120.1 billion, corresponding to a 1.1% reduction in total cost when the load ratio is increased by 1%, as shown in Fig. 5, the effect of creating a new load in the early morning hours is huge. Avoid expanding specific references due to differences.

As described above, the present invention is to effectively use the surplus power through the analysis of the power pattern all day, and among them, the automatic control system compensates for the water level control of the tank tank in the industrial / commercial and residential complexes at low load time, biased by time zone The power load pattern can be changed into a certain consumption pattern. That is, the present invention can increase the efficiency of power consumption by driving motors that drive various pumps at a time when the power load is low during the day. The maximum power usage is reduced, there is an effect that does not need to increase the capacity of the various power equipment.

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Claims (12)

A water level detector for detecting a water level from a water tank system used for water supply, sewage, or sewage treatment systems; A power consumption detector which detects the amount of power consumed during the day and outputs a signal; A control unit which detects a power load pattern periodically introduced from the power consumption detector and sends a DC signal to adjust the water level according to the power load pattern after the signal detected by the water level detector is input; A driving unit driven by a signal sent from the control unit; It includes a switching unit for controlling the AC current supplied to the drive unit by the DC signal sent from the control unit, the high load by suppressing the driving of the drive unit when the power consumption pattern input from the power consumption detection unit to the control unit is a high load Automatic water level / water pressure control device in the tank by analyzing the power load characteristics, characterized in that to reduce the power consumption at the time. The method of claim 1, wherein the control unit sends a DC signal to maintain the minimum safety level irrespective of the power consumption detected by the power consumption detector when the water level detected by the water level detection unit is a low water level. In the case, the water level / pressure automatic control device in the tank by power load characteristics analysis, characterized in that the direct current signal is sent only when the power consumption is low load. The power consumption detection unit of claim 1, wherein the controller sends a DC signal to increase the water level from the low water level to the high water level when the power level detected by the water level detection unit is low, and when the power consumption detected by the power consumption detection unit is low. When the detected power consumption is a high load, the water level / water pressure automatic control device in the tank by power load characteristics analysis, characterized in that for directing the DC signal to increase the water level from low to medium water level. The apparatus of claim 1, wherein the control unit transmits a separate signal by dividing a driving unit for driving a water tank and a water treatment system. delete The apparatus of claim 1, wherein the power consumption detector outputs a digital signal so that the controller recognizes the power level. According to claim 1, wherein the SCR is built in the switching unit, the power consumption value sent from the power consumption detection unit is a low load, when the level detected by the water level detection unit is more than the medium level, the SCR is turned on to the pump motor A water level / water pressure automatic control device in the tank by analyzing the power load characteristics, characterized in that the supply of alternating current. The power load of claim 1, wherein the water level sensing unit configures the sensors in the tank by arranging the columns in a column or a horizontal row. Automatic water level / water pressure regulating device by characterization. Detecting a water level from a water tank system used for water supply, sewage or sewage treatment systems; Detecting the power load pattern consumed during the day, Driving the pump motor to maintain the minimum safety level regardless of the power load pattern if the detected level is low level; When the detected water level is above the medium level, driving the pump motor only when the power load is small to supply water to the tank, and thus, when the power load is large, the step of suppressing the driving of the pump motor. Method for automatically adjusting the water level / water pressure in the tank by analyzing the power load characteristics. 10. The pump motor of claim 9, wherein when the detected water level is low, the pump motor is driven to supply water from the low level to the high level when the power load pattern is low, and only water is supplied from the low level to the medium level when the power load pattern is high. Method for automatically adjusting the water level / water pressure in the tank by analyzing the power load characteristics, characterized in that to drive the pump motor. 10. The method according to claim 9, wherein a separate signal is sent by dividing a driving unit for driving the water tank for the water tank and the sewage treatment system, respectively. 10. The power source of claim 9, wherein when the control unit sends a signal to the water tank and the sewage treatment system when the power load is low, power is generated by simultaneously driving the water tank and the sewage treatment system. Automatic control of water level / water pressure in the tank by power load characteristics analysis, characterized in that to prevent the rise of the load to increase the power load efficiency.