WO2014163336A1

WO2014163336A1 - Power control system

Info

Publication number: WO2014163336A1
Application number: PCT/KR2014/002667
Authority: WO
Inventors: 김덕용
Original assignee: 주식회사 케이엠더블유
Priority date: 2013-03-30
Filing date: 2014-03-28
Publication date: 2014-10-09
Also published as: KR20160011181A

Abstract

The present invention relates to a power control system; relating to such a system for controlling the power supplied to power load devices in stepped fashion in accordance with changes in reserve power capacity. The present invention comprises a power control unit for receiving stepped power load control signals output from a central control server in accordance with the changes in the reserve power capacity, and outputting corresponding power adjustment signals to the relevant power load devices. This allows the central control server to remotely effect flexible forcible control of the power load in accordance with the changes in the reserve power capacity. In the context of a lighting apparatus, the present invention allows flexible control of power load by allowing stepped dimming control in accordance with the reserve power capacity. Also, in the context of a room air conditioning/heating device, flexible control of power load can be achieved by allowing stepped pre-set temperature control in accordance with the reserve power capacity.

Description

Power control system

The present invention relates to a system that enables direct control of power load in the event of an imbalance in power supply and demand. When the power control signal is received through a wireless broadcasting network or a mobile communication network, the power supplied to the connected power load device is supplied. The present invention relates to a power control system for flexibly responding to a change in reserve power by sequentially controlling.

Electric energy has surpassed the need for the development of civilized society, such as air and water, and has become an essential element for survival in the modern society dominated by science and civilization technology. It is about 8092㎾h, far surpassing Japan, Germany, and France.

However, electricity is an indispensable commodity that produces and consumes simultaneously. It is an essential public goods that cannot be replaced on the demand side, and demand cannot be controlled.

In addition, Korea is geopolitically disconnected from neighboring countries, so it is impossible to trade power between countries. Therefore, it is essential to secure adequate power supply facilities for stable power supply.

Now, we have been able to increase the demand for industrial heating due to the economic recovery, which has been remarkably fast since the global financial crisis, and the price distortion between energy sources. This lack of constant electricity supply and demand is facing.

Lack of reserve power makes it difficult to adjust frequencies and voltages, causing damage to industries that are sensitive to electrical quality. If several power plants fail unexpectedly, widespread power outages, such as the major blackouts in the eastern United States, will increase.

As a result, the government took steps to prepare for emergency power reserves. In other words, the plan is to overcome the crisis by minimizing power demand through scenarios such as attention, caution, alertness, and serious stages.

First, when the power reserve falls below 4 million 에 and enters the 'interest' stage, the voltage adjustment is within 1.2 million ㎾ (1.52% in the country's maximum demand of 75.13 million 을) within the range that does not affect the electrical quality. Save)

At the attention stage (below 3 million mW), direct load control and emergency autonomous power savings further reduce 1.5 million mW of power demand. In addition, when entering this stage, it maximizes the output of the thermal power plant within the maximum guaranteed output range for each generator for 1 hour to secure a reserve of 300,000㎾.

When the power reserve falls to the alert level (below 2 million㎾), the government secures a maximum of 400,000㎾ by implementing forced interruptions of public institutions except facilities that are directly connected to the lives and safety of the public, such as security, firefighting, airports, and medical care.

If it falls to the severe stage (less than 1 million ㎾) of the blackout crisis, it plans to enter the cycle breakdown as the first target of the cycle breakdown.

However, when the situation of forced blackout occurs as described above, the people will be in great confusion, especially if the blackout occurs in the evening, the confusion will be aggravated by the dark environment. Moreover, the damages to property will be insignificant once forced outages reach the industry.

Therefore, the government is taking various measures to stabilize the electricity supply and demand. This is more effective in suppressing the rise in electricity bills and reducing the damage of the people, by introducing a reasonable power load management system to suppress peak loads, rather than constructing a power plant that requires huge investment costs to supply only during the short period of summer and winter. This is because of the judgment.

For example, in order to distribute peak loads, the electricity tariff system applies time-differential and hourly differential tariff systems, which is one of the efforts to solve the power supply instability caused by the sudden increase in cooling and heating loads.

However, despite such efforts, the current power consumption is increasing rapidly, especially the peak value of the power load according to the season is increasing at an unruly rate. Therefore, stable power supply and demand management technology is required to minimize the damage of the people.

The power control system of the present invention for meeting the above requirements receives a power load control signal output from the central control server according to the change in the reserve power amount and outputs a sequential power regulation signal corresponding to the power load device. It consists of a power control unit. As a result, the forced force control of the power load is possible remotely from the central control server according to the change in the reserve power amount.

As described above, the present invention can perform power control of the power load device step by step according to the change of the reserve power, it is possible to respond flexibly to the change of the reserve power.

In addition, the lighting device can be dimmed step by step according to the change in the amount of reserve power can reduce the inconvenience of daily life.

In addition, in the case of air-conditioning equipment, it is possible to control the set temperature step by step according to the change in the amount of reserve power can reduce the inconvenience of daily life.

In addition, in the case of a personal computer (PC) by enabling a warning notification in advance, it is possible to reduce important data loss.

In addition, when transmitting and receiving a power load control signal using a wireless network, it is possible to directly control the power load devices in a wide range of areas, which has an easy effect on power supply and demand management.

1 is a block diagram according to a first embodiment of the present invention.

2 is a block diagram according to a second embodiment of the present invention.

3 is a block diagram according to a third embodiment of the present invention.

4 is a block diagram illustrating a power control unit of the LED lighting apparatus according to the embodiment of the present invention.

5 is a block diagram illustrating a power control unit of an air conditioning and heating apparatus according to an embodiment of the present invention.

6 is a block diagram illustrating a power control unit of a personal computer (PC) according to an embodiment of the present invention.

7 is a block diagram according to a fourth embodiment of the present invention.

FIG. 8 is a first embodiment for explaining a control form using an EMS shown in FIG.

FIG. 1 is a block diagram illustrating a first embodiment according to the present invention. As shown in FIG. 1, a central control server 10 outputting a power load control signal according to a change in a reserve amount of power, and the central control server 10 is shown. Receives an output signal of the power control unit 30 for controlling the power supply of the connected power load device 31.

Detailed description thereof is as follows.

The power load device 31 is a bar that can be implemented in a variety of power consumption device, will be described as an example lighting device, in particular LED lighting device and heating and cooling device, PC, office equipment and the like.

First, with reference to Figures 1 and 4 will be described by taking an LED lighting device is a dimming control.

The central control server 10 outputs a power load control signal corresponding thereto in order to reduce power consumption when the checked reserve power amount is equal to or less than a set value set in stages while checking the change of the reserve power amount in real time. The control signal output from the central control server 10 is received from the wireless receiving unit 33 and confirmed by the calculating unit 34, and transmitted to the dimming controller 32 of the LED lighting device 31 through the interface 35 Allow dimming. Reference numeral 36 is a sensor unit and includes an illuminance sensor for sensing an external illuminance.

For example, when the amount of reserve power is lowered to the 'interest' level, a power load control signal for dimming the power load device, that is, the LED lighting device, to 80% brightness in one step is output.

Thereafter, the first stage power load control signal is released when the stable state is monitored while monitoring the change of the reserve power in real time. However, if the reserve power continues to fall to the 'caution' stage, it outputs a power control signal for dimming the LED lighting device to 60% brightness, which is two stages.

Then, when the reserve power goes through the 'border' stage and finally reaches the 'severe' stage, a power load control signal for dimming the LED lighting device to the lowest brightness is output.

The dimming control method may be implemented in various embodiments, and a ratio control method such as 80%, 60% .... based on the maximum brightness may be performed, and 80%, 60% based on the current brightness. ..... ratio control scheme can be made.

In the dimming control based on the maximum brightness, it is preferable to proceed by comparing the dimming value of the current dimming value with the power load control signal.

That is, it is preferable to operate only when the dimming value by the power load control signal is lower than the current dimming value.

In addition, if dimming proceeds gradually during the dimming process, the brightness of the light does not change rapidly, reducing eye fatigue and reducing psychological anxiety.

In this way, the brightness of the lighting device can be adjusted step by step according to the change in the amount of reserve power, so that the daily life can be continued and stable and resilient without the inconvenience of daily life or interruption of work caused by the power off. Power supply and demand can be adjusted.

The step-by-step control function of the power load device according to the change in the reserve power amount as described above is sufficiently applicable to the heating and cooling device shown in FIG. Also, the control signal output from the central control server 10 is received from the wireless receiver 33 'and confirmed by the calculation unit 34', and the temperature controller of the air conditioning unit 31 'through the interface 35' ( 32 ') to allow dimming. For example, power control may be performed by raising or lowering the set temperature of the heating / cooling unit step by step according to a change in the reserve power amount. The power control unit 30 ′ may further include a temperature sensor (not shown) for sensing a temperature.

On the other hand, when the power control unit 30 controls the power load device 31 by the power load control signal of the central control server 10, the controller that is provided with the power load device 31, that is, the signal of the remote controller It is preferable not to react.

That is, until the release signal outputted from the central control server 10 is received, the power of the remote controller must be prevented from responding to the effective power control.

Therefore, when controlling the power load device 31 by the central control server 10 may be further provided with an emergency notification function that can recognize this so that the user does not cause confusion.

Emergency notification function is available in various ways such as alarm sound or red LED flashing.

As shown in FIG. 6, the step-by-step control function of the power load device according to the reserve power amount may be applied to a personal computer (PC) or an office equipment (OA device). In other words, the control signal output from the central control server 10 is received by the wireless receiving unit 33 "and confirmed by the calculating unit 34", and the personal computer or office equipment 31 "through the interface 35". To the main controller 32 "of the dimming to be made.

In the case of a personal computer, when the power control unit 30 "is provided on the main board and a power load control signal is input from the central control server 10, the emergency program resident in the operating system (OS) is driven to the monitor. This is indicated.

This allows the user to know that there is an emergency and can immediately take action such as saving important data or preparing for a power outage.

The driving process as described above is equally applicable to OA devices.

Meanwhile, the central control server 10 and the power control unit 30 may transmit and receive signals through the broadcasting network 20 shown in FIG. 1, and transmit and receive signals through the communication network 40 shown in FIG. 2. It is possible.

At this time, it will be obvious that each of the central control server 10 and the power control unit 30 should be provided with a transceiver corresponding to the broadcast network 20 and the communication network 40.

The broadcasting network 40 may transmit signals using various broadcasting networks that may emerge due to future technology development, as well as FM radio broadcasting, AM radio broadcasting, DMB broadcasting, terrestrial broadcasting, satellite broadcasting, and the like.

In addition, the communication network is also capable of transmitting signals using various mobile communication networks that may emerge as well as 3G, LTE, 4G, 5G, etc. in the future.

On the other hand, the embodiment shown in Figure 3 is an example of controlling the plurality of load devices 31 connected in one power control unit 30 by connecting the plurality of load devices 31 to one power control unit 30. Figure is shown.

In this case, it will be obvious to those skilled in the art that the dimming control, the sequential dimming control, and the sequential temperature control described above are possible.

As described above, it is possible to respond elastically to the user, and the inconvenience of daily life caused by turning off the conventional power is possible, and the continuous life is possible without interruption of work in the office.

In addition, it is possible to reduce fatigue, psychological anxiety, and the like caused by rapid dimming of the user's eyes.

In addition, in the case of an industrial facility equipped with facilities such as a factory, it is possible to minimize the damage to the user by avoiding the worst situation such as blackout by supplying the minimum power to the end with sequential power control.

Meanwhile, in the present embodiment, the central control server 10 and each power control unit 30 may further include region code data in the power load control signal in order to perform regional control.

For example, when power supply is required in the Daejeon area and power control is required, the central control server 10 inserts an area code corresponding to the Daejeon area and transmits a power load control signal.

The power control unit 30 compares the area code in the received power load control signal with a previously input area code, and performs an operation corresponding to the power load control signal, or otherwise does not respond. .

In the present exemplary embodiment, the region-specific control is performed by inserting region code data into the power control signal, but is not limited thereto.

It is also possible to transmit and receive by varying the frequency for each region, and to transmit and receive by varying the channel (Channel) for each region will be naturally inferred by those skilled in the art.

In addition, in the present embodiment, the central control server 10 and each power control unit 30 may further include secret code data in a power control signal output for security. This allows only an authorized administrator to transmit a power control signal through a broadcasting network or a communication network. The secret code data is inserted into an output signal of the central control server 10, and the receiving power control unit 30 receives the secret code of the received signal. It can be implemented by comparing the data with pre-stored data and accepting a signal if they match. This can be implemented in various embodiments by those skilled in the art.

On the other hand, the power control system of the present embodiment receives the signal of the power control unit 30 as shown in Figure 7 performs a power discharge to supply the operating power to the load device 31, or at a predetermined time Further, the electronic device further includes an EMS 40 to perform the power discharge and / or power charging.

The EMS 40 includes a battery and an uninterruptible power supply (UPS) for power discharge and / or power charging.

The control signal for power discharging or power charging may be output from the central control server 10 to be input through the power control unit 30, or set to perform power discharge and / or power charging when a preset time is reached. Can be done.

Referring to Figure 8 in more detail, Figure 8 (a) is a graph showing the current state of power consumption of a particular building, the horizontal axis of the graph represents the time, the vertical axis represents the power consumption, night and bedtime While consumption is low in the morning, the consumption is increasing in the morning and afternoon.

As shown in (b) of FIG. 8, the power control system of the present embodiment can control the power consumption, so that the overall consumption, that is, the power consumption provided by a power supply such as KEPCO, can be controlled to be constant at all times. . In (a) of FIG. 8, when the power consumption is high, the power consumption provided by the power supply source is reduced, and the battery charging power of the EMS 40 is used, and the power consumption is low at midnight and dawn time (22:00 to 08:00). As shown in (b), it is possible to increase the power consumption of the power supply destination more than (a) to charge the EMS 40 battery or the like. This has the advantage of being economical by using less during relatively expensive periods and more during relatively low periods of time, and at the same time, it is extremely easy to forecast demand on the consumer side in power sources such as KEPCO. will be.

That is, if the consumption of the power provided by the power supply using the EMS 40 can be controlled flat as shown in FIG. 8 (b), the power supply such as KEPCO can easily estimate the power consumption of the consumer side Supply and demand planning can be easily scheduled, in the long term there is an advantage that can be easily scheduled to the construction plan, such as power plants according to the power consumption.

In addition, as shown in (c) of FIG. 8, the control can be performed in a form opposite to that of (a). If the typical consumer power consumption trend is in the form of (a), if the consumer side in which power consumption is controlled is increased in the form of (c), the total power consumption is a total average of (b). Will converge in form. If the overall power consumption is in the form of (b), that is, the consumption is constant, power supply and supply planning can be easily made at the power supply source such as KEPCO, and in the long term, the construction plan of the power plant can be easily scheduled. There is an advantage.

In the present embodiment, the control in the form of (b) and (c) of FIG. 8 has been described as an example, but the present invention is not limited thereto, and various forms of control are possible.

One embodiment of the present invention described above should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims

As a power control system,

A central control server for outputting a stepped power load control signal according to a change in the reserve power amount;

And a power control unit which receives the stepped power load control signal output from the central control server and adjusts the amount of power supplied to the connected load device.
The method of claim 1,

The power control unit further comprises a wireless broadcast receiving unit,

And a signal output from the central control server is transmitted to a wireless broadcast receiver of the power controller through a wireless broadcast network.
The method of claim 1,

The load device is an LED lighting device,

The power control unit controls the power supply of the LED lighting device, so that the dimming of the illumination (Dimming) is characterized in that the power control system.
The method of claim 3,

The central control server is a power control system characterized in that the dimming step is performed in sequence according to the change of the reserve power amount.
The method of claim 1,

The load device is a heating and cooling device,

The power control unit is a power control system, characterized in that for controlling the amount of power consumption by adjusting the set temperature of the air-conditioning device.
The method of claim 5,

The central control server is a power control system, characterized in that for controlling the set temperature of the air-conditioning device sequentially in accordance with the change in the amount of reserve power.
The method of claim 1,

And the signal output from the central control server is transmitted to the power control unit through a mobile communication network.
The method of claim 1,

The central control server and the power control unit power control system, characterized in that for transmitting and receiving signals in a power line communication method.
The method of claim 2,

The wireless broadcasting network,

Power control system comprising using any one or more of AM broadcast, FM broadcast, DMB broadcast, terrestrial broadcast, satellite broadcast.
The method of claim 1,

The power control unit,

And a notification device for notifying a user when the control signal is input from the central control server to control the amount of power of the load device to which the signal is connected.
The method of claim 1,

The power control signal output from the central control server further includes secret code data, and the power control unit compares the secret code data stored in advance with the secret code data received from the central control server and the amount of power supplied to the connected load device Power control system, characterized in that for controlling.
The method of claim 1,

The power control signal output from the central control server further includes area code data, and the power control unit compares the area code data stored in advance with the area code data received from the central control server, and if the match is the amount of power supplied to the connected load device Power control system, characterized in that for controlling.
The method of claim 1,

Further comprising an EMS (Energy Management System) including a battery to receive power from the power control unit to supply power to the load device,

The power control unit,

And a power discharge control signal or a power charge control signal to the EMS in response to a control signal output from the central control server or at a preset time.
A load device comprising the power control unit according to any one of claims 1 to 13.