KR20140086252A

KR20140086252A - Method for measuring electrical energy saving quantity and energy management system using the same

Info

Publication number: KR20140086252A
Application number: KR1020120156514A
Authority: KR
Inventors: 강정훈; 유준재; 임호정; 지영민
Original assignee: 전자부품연구원
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2014-07-08

Abstract

Provided are a method for measuring electrical energy saving quantity and an energy management system using the same. According to an embodiment of the present invention, an energy management method is to control energy usage in an appliance in which electrical energy is used and to provide the information on electrical energy saving quantity by calculating the electrical energy saving quantity through the control. Therefore, the energy management system will result in energy savings.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of measuring electric energy savings and an energy management system using the same,

The present invention relates to energy management systems, and more particularly, to an energy management system for monitoring and managing the use of electrical energy in buildings, factories, and the like.

In the case of existing BEMS (Building Energy Management System) and FEMS (Factory Energy Management System), energy use is monitored and energy usage is measured and provided.

However, these systems are limited to energy usage. There are systems that provide energy savings, but what they provide is just information on how much energy use has been saved over the past month.

That is, the information on the energy savings provided above means the amount of energy saved during the use process and does not mean the savings due to an artificially installed energy management system.

Therefore, it is difficult to understand how much energy saving effect is achieved by the energy management system.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an energy management system, A method for calculating the amount of energy savings, and an energy management system using the method.

According to an aspect of the present invention, there is provided an energy management method including: controlling energy use in an electric energy using device; Calculating an electric energy saving amount by the control step; And providing information on the electric energy saving amount calculated in the calculating step.

The amount of electric energy savings may be an amount of electric energy that can be consumed from the time when the electric energy using device is automatically turned off in the control step until the time when the electric energy using device is turned on.

The time when the electric energy using device is turned on may be a time when the electric energy using device is turned on by the user or a time when the electric energy using device is automatically turned on.

The control step may automatically turn off the electric energy using device when the electric use is predicted to exceed the peak electric power.

In addition, the amount of electric energy savings may be an amount of electric energy that can be consumed for a period of time that is subtracted from the 'operation time from when the electric energy using device is automatically turned off in the control step' It can be an amount of energy.

In addition, the average operation time of the electric energy using devices may be different according to seasons or time zones.

According to another aspect of the present invention, there is provided an energy management server including: a communication unit for transmitting a command for controlling energy use to an electric energy using device; And a processor for calculating an energy saving amount by the energy use control.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to calculate the amount of electric energy savings due to the energy use control process of the electric energy using device, and it is possible to grasp the energy saving effect by the energy management system.

In addition, the amount of electric energy saved can be clearly reported, and the value and benefit of the energy management system can be clearly calculated, so that the customer and the service provider can profitably share the benefit.

In addition, the calculated electric energy savings can be used for improving the energy management system.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view illustrating a building heating / cooling system according to an embodiment of the present invention;
2 is a view for explaining a method of measuring the amount of electric energy savings according to another embodiment of the present invention,
3 is a block diagram of the energy management server shown in FIG.

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

1 is a view illustrating a building heating / cooling system according to an embodiment of the present invention. The building heating and cooling system according to the present embodiment is a system that can control the energy use while monitoring the energy use in the building and calculate the energy saving amount by the energy control.

1, the building heating and cooling system according to the present embodiment includes cooling / heating devices 10-1, 10-2, ..., 10-n, cooling / heating controllers 100-1, 100-2, ..., 100-n, the cooling / heating power meters 200-1, 200-2, ..., 200-n, the energy management server 300, And a KEPCO authentication peak power controller 420.

The air conditioners 10-1, 10-2, ..., 10-n are installed in various places of the building, and use electric energy for heating / cooling the building.

The cooling / heating controllers 100-1, 100-2, ..., and 100-n can remotely control (cool) the air conditioners 10-1, 10-2, ..., / Heating controller On, Off, etc.) to function as an IR remote controller. The cooling / heating controllers 100-1, 100-2, ..., 100-n are connected to the cooling / heating power meters 200-1, 200-2, ..., 200- It is different from the general IR remote control in that it can communicate with the IR remote controller.

The cooling / heating power measuring devices 200-1, 200-2, ..., 200-n measure the electric energy usage amounts in the cooling / heating devices 10-1, 10-2, ..., 10- And transmits information on the calculated usage amount to the energy management server 300. [

KEPCO meter 410 measures information about electric power used throughout the building, and transmits information on peak power (maximum demand power) and cumulative usage amount to KEPCO in units of 15 minutes.

The KEPCO authentication peak power controller 420 receives power usage information from the KEON Meter 410 and generates information such as peak power, cumulative usage amount, and instantaneous power, and transmits the generated information to the energy management server 300.

The energy management server 300 controls the cooling / heating devices 10-1, 10-2, ..., 10-n according to electric energy usage conditions in the building. Specifically, when the peak power in the building is predicted to exceed the contracted power or the threshold power set by the administrator, the energy management server 300 determines that the cooling / heating devices 10-1, 10-2, ..., 10 -n) is automatically turned off.

Then, the energy management server 300 measures the amount of electric energy savings due to the automatic control. This process will be described in detail with reference to FIG.

FIG. 2 is a view for explaining a method of measuring electric energy savings according to another embodiment of the present invention.

As shown in FIG. 2, the energy management server 300 receives power usage status information such as peak power, cumulative usage amount, and instantaneous power from the KEPG authentication peak power controller 420 in real time (S510).

In addition, the energy management server 300 receives information from the cooling / heating power meters 200-1, 200-2, ..., 200-n to the cooling / heating devices 10-1, 10-2, 10-n) in real time (S520).

When the peak power is predicted to exceed the contract power or the threshold power (S530), the energy management server 300 automatically turns off among the cold / heat radiators 10-1, 10-2, ..., 10-n (S540).

Step S530 predicts the peak power in consideration of the cumulative usage amount in the peak power calculation period and the remaining cycle time. It is possible to predict that the peak power will not exceed the contract power or the threshold power even if the current cumulative usage amount is large, because the remaining cycle time is short and the peak power can be estimated as the contract power or the threshold power May be expected to exceed.

There is no restriction on the manner of selecting the air conditioners in step S540. It is possible to select the air conditioners having a long operation time up to now, the air conditioners installed at a high internal temperature, or may be selected according to a predetermined priority.

However, when the cumulative usage is large, it is desirable to select a large number of coolers / heaters or a large number of coolers / heaters with a large amount of electricity. If the cumulative usage is low, a small number of coolers / It is desirable to select the air conditioner.

In step S550, the energy management server 300 transmits the cooling / heating off command to the cooling / heating power meters connected to the selected cooling / heating devices in step S540. In step S550, the cooling / Off command to the cooling / heating controllers (S560), and the cooling / heating controllers turn off the cooling / heating devices (S570).

Meanwhile, the energy management server 300 calculates the amount of electric energy savings achieved through the cooling / heating control through steps S510 to S570 (S580), and provides the calculation result to the manager (S590).

In step S580, the electric energy savings are calculated and added for each cooler / heater. The amount of electric energy saved by the heating / cooling system is calculated as the amount of electric energy that can be consumed from the time when the air conditioner is automatically turned off to when the air conditioner is turned on It is possible.

At this time, the point in time when the cooling / heating device is turned on may be any of 'the time when the user turned on' or 'the time when the energy management server 300 automatically turned on'.

The electric energy consumed in the air conditioner is calculated based on the electric energy usage amount of the air conditioner / heater received from the cooling / heating electric power measuring devices 200-1, 200-2, ..., 200-n in step S520 can do.

3 is a block diagram of the energy management server 300 shown in FIG. The energy management server 300 includes a communication unit 310, a processor 320, and a storage unit 330, as shown in FIG.

The communication unit 310 establishes and maintains a communication connection with the cooling / heating power meters 200-1, 200-2, ..., 200-n and the KEPG peak power controller 420.

The processor 320 calculates an amount of electric energy received from the cooling / heating power meters 200-1, 200-2, ..., 200-n by the cooling / heating devices 10-1, 10-2, ..., ., 10-n.

In addition, the processor 320 may store the electricity usage status received from the KEPCO-certified peak power controller 420 in the storage unit 330 by time zone.

Then, the processor 320 calculates the amount of electric energy savings and stores it in the storage unit 330, displays the electric energy savings amount, and provides the display to the administrator, or may transmit the electric energy savings to the administrator terminal.

Up to now, preferred embodiments of the method for measuring electric energy savings and the energy management system using the same have been described in detail.

The method of estimating the electric energy savings shown in the above embodiment is illustrative and can be modified. For example, the amount of electric energy that can be consumed during the time obtained by subtracting 'the operation time from the average operation time of the coolers / radiators' to the time of 'automatically turning off the coolers / radiators through steps S510 to S570' Can be estimated by the amount saved. At this time, the average operation time of the air conditioners can be set differently by season and by time zone.

Also, in the above embodiment, it is assumed that the electric energy usage status is acquired from the KEPCO-certified peak power controller 420, but this is also only an example. It is also possible to install sub-meters in the distribution panel that branches off to each floor of the building, and to collect information on the use of electric energy from these sub-meters.

Also, the cooling / heating device exemplifies a device using electric energy, and the technical idea of the present invention is also applicable when the device is replaced with another type of electric energy using device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

10-1, 10-2, ..., 10-n: air /
100-1, 100-2, ..., 100-n: cooling / heating controller
200-1, 200-2, ..., 200-n: cooling / heating power meter
300: Energy management server
410: KEPCO meter 420: KEPCO certified peak power controller

Claims

Controlling the use of energy in an electrical energy using device;
Calculating an electric energy saving amount by the control step; And
And providing information on the electric energy saving amount calculated in the calculating step.

The method according to claim 1,
The amount of electric energy saved is,
Wherein the amount of electric energy that can be consumed from the time when the electric energy using device is automatically turned off to the time when the electric energy using device is turned on in the control step.

3. The method of claim 2,
When the electric energy using device is turned on,
Wherein the time when the electric energy using device is turned on by the user or the time when the electric energy using device is automatically turned on.

3. The method of claim 2,
Wherein the control step comprises:
And automatically turning off the electric energy using device when it is predicted that electric use exceeds the peak electric power.

The method according to claim 1,
The amount of electric energy saved is,
Is an amount of electric energy that can be consumed for a period of time obtained by subtracting 'the operation time from the average operation time of the electric energy using apparatus' to the 'time when the electric energy using apparatus is automatically turned off in the control step'. How to manage.

6. The method of claim 5,
The average operation time of the electric energy using device
Season, or time of day.

A communication unit for transmitting a command for controlling energy use to the electric energy using device; And
And a processor for calculating an energy saving amount by the energy use control.