KR101359040B1 - Usn-based power control system using context-aware computing technology - Google Patents

Abstract

The present invention relates to a peak power control method of a USN-based power control system using a context-aware computing technology, the peak power control method of a USN-based power control system includes: a step of setting a basic peak power control section by dividing a peak power calculation section with a predetermined ratio and calculating the average power consumption in the each peak power control section; a step of cancelling an excessive part by cutting off power of a controllable electronic device before the next peak power control section starts when the average power consumption reaches the maximum available peak energy. The efficient power management can be done according to the situation of each place of business by controlling power consumption in each peak power calculation section not to exceed the maximum available peak energy. [Reference numerals] (AA) Start; (S101) Initilizing cumPC - 0: CNT + 0:; (S102) Verifying the power consumption ([PA_Int); (S103) Accumulating the power consumption CumPC+=PC; cnt = 0; (S111) Excessive amount of use EP = cum PC = DPPC=β=cnt; (S114) Cutting off the power of electronic devices as much as EP by considering the priority rule; (S115) Cutting off the power the entire controllable electronic device

Description

Peak power control method of GN-based power control system using context-aware computing technology {USN-based Power Control System Using Context-Aware Computing Technology}

The present invention relates to a USN-based power control system, and more particularly, USN-based power control using context-aware computing technology to efficiently manage peak power and power consumption in homes and businesses by applying context-aware computing technology. A peak power control method for a system.

With the development of the industry, the use of lighting, heating and heating facilities and various home appliances in homes and workplaces is increasing, and thus more electric energy is used. Moreover, due to the recent excessive power consumption, the shortage of power frequently occurs, which requires systematic management of power consumption.

Meanwhile, according to the Korea Electric Power Corporation, Korea's annual peak power has been steadily rising by about 5% every year due to the spread of air conditioners and heaters, the enlargement of home appliances, reckless power usage, temperature drop, and economic growth. As the peak power rises, the reserve power rate drops, for example, in 2011, the reserve power rate dropped below 6%. In order to secure safe power reserves, it is required to increase power generation facilities, but it is difficult to solve the problems due to the increasing power supply location, enormous investment resources, and tightening environmental regulations. Therefore, it can be said that peak power management is necessary to reduce power supply stability and power consumption.

To this end, the present applicant in the Republic of Korea Patent Publication No. 10-2011-0136023 (2011.12.21), the amount of power consumption by controlling the operating state of each electric device in accordance with the preset power consumption criteria based on the basic situation information A sensor network based power control system has been disclosed.

1 is a block diagram illustrating a conventional sensor network-based power control system according to the present invention. In the sensor network-based power control system for controlling power consumption of at least one or more electric devices installed in a specific space, as shown in FIG. A sensor node 110 configured to detect basic situation information, which is data for controlling power consumption of the device, to collect data, and to transmit and receive the collected data through the sensor network communication network 120; And receiving and collecting data transmitted from the sensor node unit 110 through the sensor node unit 110 and the sensor network communication network 120, and preset power consumption corresponding to the data of the basic situation information. It includes; Central management unit 130 for controlling the operating state of the electrical device according to the standard.

However, in the conventional sensor network-based power control system as described above, since the central management unit collects and analyzes the situation information of the entire workplace and controls the equipment installed at each site, it is possible to control the peak power according to the individual situation change for each workplace. There was a problem that could not be.

Republic of Korea Patent Publication No. 10-2011-0136023 (2011.12.21)

The present invention is to overcome the above-described problems of the prior art, by creating and registering a profile of the workplace for power management from the user can control the peak power and power consumption autonomously according to the change of various situation information for each business site The purpose of the present invention is to provide a peak power control method of a USN-based power control system using a cognitive computing technology.

In order to achieve the above object, the peak power control method of the USN-based power control system using the context-aware computing technology according to the present invention, in the peak power control method of the USN-based power control system, the peak power calculation interval (PKcal_int) constant Setting a basic peak power control section by dividing by a ratio and calculating an average power consumption in each peak power control section; And when the average power consumption reaches the "maximum allowable peak power amount (DPPC) x β (control coefficient) (β <1.0)", the power of the controllable electronic device is cut off before the next peak power control section (PKcon_int) starts. And controlling to offset the excess portion.

The maximum allowable peak power amount DPPC may not be exceeded for each peak power calculation period PKcal_int.

The peak power control is performed in the divided minute section in the first four peak power control sections, that is, in the first four peak power control sections PKcon_int, set in three minute units (15 minutes / 5 = 3 minutes). In step 3), it is desirable to reduce the peak power control interval PKcon_int by 1/3 to increase the frequency of power control.

The power consumption is read from the relay for each power acquisition period (PA_int = 3 seconds), and the average power consumption is obtained at the point where the peak power control interval (PKcon_int) ends. If this value exceeds "DPPC × β", the rest of the peak power calculation interval is obtained. It is desirable to control the electronic device so that the amount of power exceeded in time can be canceled out.

When the controllable power is less than the total power consumption amount CP, all of the controllable electronic devices may be turned off.

The priority of cutting off the power delivered to each electronic device is set according to the use purpose of the electronic device, the installed position, or the type of the electronic device, and when the current power consumption of the electronic device exceeds the peak power threshold, The power delivered to each electric device may be cut off in sequence according to the priority data.

According to the peak power control method of the USN-based power control system applying the context-aware computing technology according to the present invention configured as described above, by creating and registering a profile of the workplace for power management of the workplace from the user to the change of various situation information for each workplace Therefore, it is possible to control peak power and power consumption autonomously, so that power management can be efficiently performed according to the situation of each workplace.

1 is a block diagram showing a conventional sensor network based power control system;
Figure 2 is a block diagram showing a USN-based power control system applying a context-aware computing technology in accordance with an embodiment of the present invention.
3 is a control flowchart illustrating a peak power control method of a USN-based power control system to which context-aware computing technology is applied according to an embodiment of the present invention;
4 is a graph showing that the peak power control interval of the present invention is reduced;
5 is a graph showing the total amount of power exceeded until the present time t of the present invention.

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

2 is a block diagram illustrating a USN-based power control system to which context-aware computing technology is applied according to an exemplary embodiment of the present invention.

As shown, the USN-based power control system applying the context-aware computing technology according to an embodiment of the present invention, the remote control sensor node 210, standby power control sensor node 220, the human body sensor node 230 And a power amount detection node 240, a central server 250, a database 260, and a temperature sensor node 270.

The sensor nodes are installed to control peak power and power consumption of at least one or more electric devices (not shown) installed in a specific space.

The specific space means a place where the electric device operating by using electric power is installed, and includes all places where the electric device is installed and operated, such as a home, an office, a lecture room, and a business place. Also, in a spatial sense, it means a zone having a certain range such as one room (room), one floor, and one building, and the range of the space may vary depending on the configuration to which the system is applied.

In addition, the electric device is a device operated by using electric power, and it is a device operated by electric power, and is installed in the specific space such as an air conditioner, a fan, a heater, a lighting device, a computer, a refrigerator, a TV, a washing machine, Refers to all electric devices installed in the specific space, or only a part of the electric devices having a large electric power consumption may be targeted.

The remote sensor node 210 detects an operation start signal of the user in a state where the standby power and the electronic device are turned off, and the power amount detection node 240 measures the power consumption of the electronic device.

 The standby power control sensor node 220 supplies standby power to the electronic device, and measures the power consumption of the electronic device to block the standby power when the standby power supply time lasts for a predetermined time or when the operation of the electronic device is turned off. .

The human body sensor node 230 periodically detects the presence or absence of a human body, and the temperature sensor node 270 is installed indoors or outdoors to collect and control temperature data.

The central server 250 and the database 260 are connected to the sensor nodes 210, 220, 230, 240 and 270 through the sensor network communication network 120 to receive data transmitted from the sensor nodes. Collecting and controlling an operating state of the electric device according to a preset power consumption criterion corresponding to the data of the basic situation information.

3 is a control flowchart illustrating a peak power control method of a USN-based power control system to which context-aware computing technology is applied according to an exemplary embodiment of the present invention, and FIG. 4 is a graph showing that the peak power control interval of the present invention is reduced. .

Hereinafter, the description of the symbols shown in the drawings are as shown in Table 1 below, with reference to this will be described a preferred embodiment of the present invention.

Abbreviation Explanation PKcal_int The peak power calculation interval (peak power caculation interval) used in the embodiment of the present invention set to 15 minutes (900 seconds). PA_int As a period for acquiring a power consumption interval of a workplace to be controlled (peak power acquisition interval), in the embodiment of the present invention, the power consumption of the workplace is acquired every three seconds. PKcont_int In the embodiment of the present invention, the peak power control interval is controlled every 3 minutes (180 seconds) when the peak power is exceeded, and every 3 minutes (720 seconds to 900 seconds) of the 15 minute period is controlled. Power control is performed every minute. DPPC The maximum allowable peak power consumption required by the workplace, so that the peak power is not exceeded above this value. alpha Power consumption collection interval specified value (3 minutes in the embodiment of the present invention) β When the amount of power used reaches a value of (DPPC × β) as the DPPC control coefficient, power control starts (0.9 in the embodiment of the present invention). cumPC Cumulative power consumption from the start of each PKcal_int to the present secPPC Average value of total power consumption from PKcal_int to the present time, and becomes the interval peak power at the end of PKcal_int. Cnt The number of power consumption collected per PA_int EP Desired Peak Power Excess CP Controllable power

As shown, in the peak power control method of the USN-based power control system applying the context-aware computing technology according to an embodiment of the present invention, since the peak power is measured in the unit of the peak power calculation interval (PKcal_int) for each interval Control shall not exceed the required peak power (DPPC).

In this embodiment, the basic peak power control section (PKcon_int) is set by dividing by 1/5 of the peak power calculation section (PKcal_int), the average power consumption is calculated in each peak power control section, and the average power consumption is “maximum allowable. When the peak power amount (DPPC) × β (control factor) (β <1.0) ”is reached, a method of canceling the excess portion by appropriately controlling the controllable electronics before the start of the next peak power control interval (PKcon_int) is described. use.

The peak power control is performed in the 3 minute units (15 minutes / 5 = 3 minutes) set in the first four peak power control sections (PKcon_int), and the peak power control section (PKcon_int) is 1/3 in the last 3 minutes section. This reduces the frequency of power control.

4 shows that the peak power control section PKcon_int is reduced. This is because in the last stage of control, suddenly many people can exceed the required peak power if they turn on the electronics at the same time or operate a device with high power consumption.

4, the power consumption is detected from the relay every power acquisition period (PA_int = 3 seconds), and the average power consumption is calculated at the point where the peak power control interval (PKcon_int) ends. The appliance is controlled to compensate for excess power for the remainder of the power calculation period.

3 illustrates a flowchart of a power control algorithm according to an exemplary embodiment of the present invention in detail.

The power control algorithm shown in FIG. 3 enters an infinite loop after initialization. In initialization, PKcont_int is set to a value of α, which is 180 seconds (3 minutes) in the actual program (S101).

After waiting for the power consumption detection time PA_int at the start of the infinite loop, the current power consumption PC is detected from the relay, and this value is continuously added to the cumulative PC value cumPC (S102 to S103).

The average value (secPPC) of the total power consumption is obtained at the point of 3 minutes (S104 ~ S105), and this value becomes the section peak power for the peak power calculation section at 15 minutes, so it is stored in the system and the next peak power calculation section is obtained. Start (S106 ~ S109).

In each control section, control is performed when the average power consumption to date exceeds the required peak power (S110).

Then, the excess usage EP (Excess Power) is obtained at time t in Equation 1 as follows (S111).

The EP (t) represents the amount of power exceeded by the current time t within the peak power calculation period.

In FIG. 5, the excess use portion and the less use portion are displayed based on the DPPC. EP (t) represents the total amount of power exceeded until the current time t.

This EP (t) is controlled to be offset for the rest of the time 900-t. On the other hand, when the controllable power is less than the CP, all the controllable devices are controlled to be turned off (S112).

On the other hand, each room in the workplace has different importance in power control. Therefore, when the power of the electronic device is to be forcibly shut down for the peak power management, the order of the power cut is determined according to the importance of the set room. The importance setting of the room divides all rooms into upper, middle, and lower groups when the power manager composes the whole system. The order of control in the room belonging to the upper group is low, and the room belonging to the middle group and the room belonging to the lower group are controlled first.

Apart from this, it is also possible to set control priorities within each group. TDIFF (Temporature Difference), InUse (In Use) and PC (Power Consumption) were used as input variables of the priority setting function (PF). The electronics in the room with the higher values were controlled first. PF of the room x at time t can be expressed as an arithmetic mean of various priority functions as shown in Equation 2 below.

Here, TDPF (x, t) is a priority function based on the temperature difference of room x at time t, and UPF (x, t) is a priority function by using room x at time t, PCPF (x, t). t) represents the priority function by the power consumption of the room x at time t.

In addition, w1, w2, w3 represents a weight indicating the effect of the result value of the different priority function on the overall priority function PF, w1 + w2 + w3 = 1.0. When w1 = 1.0, it means that a room is controlled only by the temperature difference of a room.

According to the peak power control method of the USN-based power control system applying the context-aware computing technology according to the present invention configured as described above, by creating and registering a profile of the workplace for power management of the workplace from the user to the change of various situation information for each workplace Therefore, it is possible to control peak power and power consumption autonomously, so that power management can be efficiently performed according to the situation of each business site.

The embodiments of the present invention described in the present specification and the configurations shown in the drawings relate to the most preferred embodiments of the present invention and are not intended to encompass all of the technical ideas of the present invention so that various equivalents It should be understood that water and variations may be present. Therefore, it is to be understood that the present invention is not limited to the above-described embodiment, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. , Such changes shall be within the scope of the claims set forth in the claims.

210: remote control sensor node
220: standby power control sensor node
230: human body sensor node
240: power detection node
250: central server
260 database
270 temperature sensor node

Claims (6)

In the peak power control method of the USN-based power control system,
Dividing the peak power calculation section by a predetermined ratio to set a basic peak power control section, and calculating average power consumption in each peak power control section; And
When the average power consumption reaches the "maximum allowable peak power amount × β (control coefficient) (β <1.0)", the excess power is cut off by controlling the power of the controllable electronic device before the next peak power control section starts. Offsetting;
The peak power control is a situation-aware computing, characterized in that the first step in the peak power control section is divided into a set minute interval, and the last section to reduce the peak power control section to a reference value or less to increase the frequency of performing power control Peak power control method of USN-based power control system applying technology.
The method of claim 1,
The peak power control method of the USN-based power control system using a situation-aware computing technology, characterized in that the control to not exceed the maximum allowable peak power amount for each peak power calculation section.
The method of claim 1,
The reference value is a peak power control method of a USN-based power control system using a situation-aware computing technology, characterized in that for reducing the peak power control interval by 1/3.
The method of claim 1,
For each period of power consumption, the power consumption is read from the relay and the average power consumption is found at the end of the peak power control section. If this value exceeds the maximum allowable peak power × β, A peak power control method of a USN-based power control system using a situation-aware computing technology, characterized in that to control the electronic device to offset the excess power.
The method of claim 1,
If the controllable power is less than the total power consumption, the peak power control method of the USN-based power control system using a situation-aware computing technology, characterized in that the controllable electronics installed in the controllable specific space off.
The method of claim 1,
The priority of cutting off the power delivered to each electronic device is set according to the use purpose of the electronic device, the installed position, or the type of the electronic device, and when the current power consumption of the electronic device exceeds the peak power threshold, Peak power control method of the USN-based power control system using a situation-aware computing technology characterized in that the power to be sequentially transmitted to each electric device in accordance with the priority data.

Images