KR20190115335A - Convergence power supply system and method using night electric power - Google Patents

Abstract

The present invention relates to a power supply system and a method thereof and, more specifically, to a convergence power supply system and a method thereof. The convergence power supply system uses a plurality of chargers capable of charging midnight power and sequentially utilizes the chargers for power generation in the daytime so as to efficiently use the midnight power in the daytime. According to an embodiment of the present invention, the midnight power is charged by using the plurality of chargers. The chargers are distributed in accordance with a time order and generate power so as to efficiently use the inexpensive midnight power in the daytime, thereby reducing power use costs.

Description

Convergence power supply system and method using midnight power {CONVERGENCE POWER SUPPLY SYSTEM AND METHOD USING NIGHT ELECTRIC POWER}

The present invention relates to a power supply system and method, and more particularly, by using a plurality of chargers that can charge the late-night power, by utilizing these chargers sequentially in the daytime time to power generation during the day time effectively A fusion power supply system and method that can be used.

In general, electric energy generates electric energy in a power plant using fossil fuel or nuclear energy, and the generated electric energy tends to have a large variation in the amount of power used according to time zones. As a result, KEPCO is adding or subtracting the electric energy generation capacity according to the amount of power consumed, but not only power generation but also reserve power according to the statistics that can increase the amount of electricity used, thus unnecessary fuel consumption. And electrical energy that is not consumed and disappears.

In particular, in the late-night hours, power consumption is sharply reduced, reducing power generation capacity. However, the reserve power is considerable, so in order to increase the utilization of dissipated electric energy, low-priced night power is stored at a low price and stored in a charger. It is also used during the daytime when power consumption is increasing. Currently, the late night time zone, which is divided into midnight power by KEPCO and applies a low price, means a time zone from 23:00 every day to 9:00 the next morning.

For example, Japanese Patent Application Laid-open No. 10-2002-0062408 (power supply system using midnight electric power) and Japanese Patent Laid-Open Publication No. 10-2002-0064017 (power supply system using midnight electric power) are used at AC power at night time. The power is supplied to convert the DC current through the current converter, and the DC current is stored in the charging device to be supplied to the air conditioner and the heater during the day and night time. In addition, Japanese Patent Application Laid-Open No. 10-2005-0044040 (A night battery charging system for home use) converts power supplied by AC 220 volts into a DC 12 volts at midnight to charge the battery and charge it during the daytime. Converted electricity to AC 220 volts for use in home appliances. However, in the related art, although the concept of storing the late night power in a charger such as a battery and using it in some home appliances during the day time has been proposed, the whole day time using the late night time (23 o'clock to 09 o'clock) is used. As for (09:00 to 23:00), no efficient method for applying to the entire home appliances used in the home has been proposed.

Patent Publication No. 10-2002-0062408 (July 26, 2002) Patent Publication No. 10-2002-0064017 (2002.08.07) Publication No. 10-2005-0044040 (2005.05.12)

The present invention is to solve the above problems, by using a plurality of chargers to charge the late-night power, daytime time for all home appliances in the home by using the late-night power in the power generation sequentially during the daytime It is an object of the present invention to provide a fusion power supply system and method that can be used efficiently.

In order to achieve the above object, the hydraulic power supply system using the late-night power of the present invention is an apparatus for supplying power to the electricity consumption mechanism in the electrical demand source, AC input unit for receiving the AC power supplied in the electrical demand destination, Among the AC power applied through the AC input unit, a converter for converting the AC power of the late-night power supply time to DC power, a plurality of chargers, the charging unit for charging the DC power delivered through the converter, and the charging unit A control unit for controlling the use of the DC power source according to a time schedule for the plurality of chargers constituting the battery; and a power generation unit generating AC power using the DC power provided from the charging unit under control of the control unit; And for supplying AC power generated by the power generation unit to an electricity consumption mechanism within the electricity demand source. It may include a power supply.

The charging unit may be configured by the number of chargers such that the sum of the durations of the chargers supplying the DC power to the power generation unit is at least 24 hours or more.

The charger may be a charging alternating current.

The controller may select and switch a charger driving the power generation unit according to a state of charge of the plurality of chargers.

The power generation unit may be composed of a motor for generating a rotational force using a DC power delivered from the charger according to the selection of the controller, and a turbine for generating AC power using the rotational force of the motor.

In addition, the method of supplying fusion power using the late-night power of the present invention, in the method for supplying power to the electricity consumption mechanism in the electrical demand destination, the step of receiving AC power, determining whether it is a late night time, Converting the AC power to a DC power to charge a plurality of chargers, determining whether it is a weekly time, and, if it is a weekly time, driving a power generation unit by sequentially using the power of the plurality of chargers; The method may include supplying power generated by the power generation unit to the electricity consumption mechanism.

The number of the plurality of chargers may be such that the sum of the durations of the chargers supplying power to the power generation unit is at least 24 hours or more.

The charging of the plurality of chargers may be performed simultaneously with driving the power generator.

The driving of the power generation unit may select and switch a charger driving the power generation unit according to the state of charge of the plurality of chargers.

The fusion power supply method using the late-night power may further include selling to the Korea Electric Power Corporation or a third party when there is power remaining after supplying to the electricity consumption mechanism among the power generated by the power generation unit.

According to the fusion power supply system and method according to an embodiment of the present invention, by using a plurality of chargers to charge the late night power, it is possible to distribute the power generation by the time order in the day time zone, thereby inexpensive late night power to the day time zone It can be used effectively to reduce the cost of power use.

1 is a block diagram of a fusion power supply system using midnight power according to an embodiment of the present invention;
2 is a view showing a charging and power generation schedule in the case of using electricity only during the day time in the fusion power supply method using the midnight power according to an embodiment of the present invention,
3 is a view illustrating a charging and power generation schedule in the case of using electricity at both a late night time and a day time in a fusion power supply method using a late night power according to another embodiment of the present invention;
4 is a flowchart illustrating a fusion power supply method using a late night power according to an embodiment of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the context clearly indicates the opposite. As used herein, the term "comprising" embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Commonly defined terms used are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

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

1 is a block diagram of a fusion power supply system using midnight power according to an embodiment of the present invention. The fusion power supply system of the present invention can be used to supply power to not only ordinary homes where home appliances are located, but also small and medium-sized factory equipment, mobile electric devices such as mobile phones, and electric consumer devices located in various electric demands such as ships or airplanes. have.

Referring to FIG. 1, the fusion power supply system using the midnight power of the present invention includes an AC input unit 110, a converter 120, a charging unit 130, a control unit 140, a power generation unit 150, and a power supply unit 160. It can be made of).

The AC input unit 110 is a part for receiving AC power supplied to a home or a factory, and may be configured in the form of a plug that can be plugged into an outlet installed in a wall of a home or a factory. In general, power is supplied from a power plant to a household through a power line, and 220V may be supplied depending on the country or region.

Converter 120 is a part for converting the AC power of the midnight power supply time to the DC power of the AC power applied through the AC input unit 110. The converter 120 may be used in various types according to the input voltage and current, the output voltage and current, and for the purpose of domestic use, the input voltage has a range of about 220V, and the output voltage and current may be It should be used to the specifications of the charger to be connected. The process of converting the AC power to the DC power by the converter 120 may be controlled by determining whether it is a midnight power supply time in the controller 140 to be described later.

The charging unit 130 is a portion for charging the DC power transmitted through the converter 120, and the charging unit 130 is illustrated as an example in which the charging unit 130 includes three chargers 131, 132, and 133. The reason why the plurality of chargers 131, 132, and 133 are configured is that the charge section of the low-cost late night power is smaller than the other day time. For example, if you use a charger with the same charge and discharge time, and you have 10 hours of nighttime power and 14 hours of daytime, you can use at least 10 hours of weekly time. Two or more chargers capable of charging and generating time may be required. That is, the charging unit 130 preferably configures the number of chargers such that the sum of the durations of the chargers 131, 132, and 133 supplying the DC power to the power generation unit 150 is at least 24 hours or more. The charging and power generation schedule using the plurality of chargers 131, 132, and 133 will be described in more detail below.

The controller 140 sequentially supplies power to the power generator 150 at the rear end according to a time schedule for the plurality of chargers 131, 132, and 133 constituting the charging unit 130, thereby generating the power generation unit during the daytime period. It is a part for supplying power to the electricity consumption mechanism 170 by operating 150 continuously. At this time, the time schedule for the plurality of chargers 131, 132, 133 may be adjusted according to the capacity and duration of the chargers 131, 132, 133.

The power generation unit 150 is a portion for generating an AC power capable of operating an electricity consumption mechanism in the electricity demand destination by using the power supplied from the charging unit 130 under the control of the control unit 140. For example, the power generation unit 150 may be composed of a motor for generating a rotational force using the DC power delivered from the charger according to the selection of the controller, and a turbine for generating AC power using the rotational force of the motor. In Korea, since most electricity consumption mechanisms used in homes or factories use a power supply of 220 V, the output voltage of the power generation unit 150 may be configured as a product having a standard of 220 V. Of course, since the power used in various electricity demand sources as well as the home may vary depending on the area or the type of electricity consumption mechanism, the power specification of the power generation unit 150 may be selected in consideration of the total amount of power used in the electricity demand destination. There will be.

The power supply unit 160 is a portion for supplying the AC power generated by the power generation unit 150 to the various electricity consumption mechanisms 170 in the electricity demand destination. The electrical consumer appliance 170 used within the electrical consumer can be comprised of a variety of electrical consumer products, such as household appliances 171, mobile products 172, factory equipment 173, or other electrical appliances 174. The power supply unit 160 may be in the form of a multi-tap to which a plurality of electricity consumption mechanisms 170 may be connected, or may be in the form of a plug that may be connected to the multi-tap.

On the other hand, the power supply system using the midnight power of the present invention is the AC input unit 110, the converter 120, the charging unit 130, the control unit 140, the power generation unit 150, and the power supply unit 160 is one product Alternatively, the AC input unit 110, the converter 120, the charging unit 130, and the controller 140 may be configured as a charging system, and the remaining power generation unit 150 and the power supply unit 160 may be configured as a power generation system. It may be configured separately.

2 is a view showing a charging and power generation schedule in the case of using electricity only during the day time in the fusion power supply method using a midnight power according to an embodiment of the present invention.

Referring to FIG. 2, a method of supplying a converged power source using a late night power according to an embodiment of the present invention will be described in detail. Currently, in Korea, midnight power application time is regulated from 23 o'clock to 09 o'clock, so in order to make it easier to understand the charge and power generation schedule using the late night power, the late night power application time is 10 hours from 23 o'clock to 09 o'clock. Assume and explain. In addition, in using the fusion power supply of the present invention, the electricity consumption mechanism 170 is not used during the late-night power application time (23 o'clock to 09 o'clock), and the electricity consumption only during the day time (09 o'clock to 23 o'clock). The case where the mechanism 170 is used is applied as an example.

In the application of the fusion power supply method using the late-night power of the present invention, if the electric consumption mechanism 170 is not used during the late-night power application time (23 o'clock to 09 o'clock), the charger constituting the charging unit 130 is a first charger By configuring two of 131 and the second charger 132, the power supply of the present invention can be effectively made.

First, since the first charger 131 and the second charger 132 do not use the electricity consumption mechanism 170 during the midnight power application time (23 o'clock to 09 o'clock), only the charging operation is performed. It is assumed that the first charger 131 and the second charger 132 are fully charged through the charging for 10 hours, and can drive the power generation unit 150 for 10 hours. The charge operation of the first charger 131 and the second charger 132 is completed at 09 o'clock when the late-night electric power application time (23 o'clock to 09 o'clock) ends, and since it corresponds to the weekly time, the electricity consumption within the electricity demand source In order to supply power to the mechanism 170, power is generated by driving the power generation unit 150.

First, the first charger 131 drives the power generation unit 150 for 10 hours from 09:00 to 19:00, and the power generated during this time is supplied to the electricity consumption mechanism 170 through the power generation unit 150. . At 19:00, power generation of the power generation unit 150 by the first charger 131 is terminated, and the power generation unit 150 is then driven through the second charger 132. Since the electricity consumption mechanism 170 is not used during the late-night power application time (23 o'clock to 09 o'clock), the second charger 132 drives the power generation unit 150 only for four hours from 19 o'clock to 23 o'clock. It will operate the electricity consumption mechanism 170 in the demand.

When the time for generating power through the second charger 132 reaches 23:00, it corresponds to the late-night power application time (23 o'clock to 09 o'clock) from this time, and since there is no use of the electricity consumption mechanism 170, The first charger 131 and the second charger 132 are charged again.

As described above, the nighttime power application time (23 o'clock to 09 o'clock) and the weekly time are divided on a 24-hour basis, and when the electricity consumption mechanism 170 is used only during the day time, two units having a charge and generation capacity of 10 hours are used. By using the chargers 131 and 132, the late night power can be used to drive the electricity consumption mechanism 170 in the electricity demand destination.

On the other hand, there may be a case where the electricity consumption mechanism 170 is used even at midnight power application time (23 o'clock to 09 o'clock). In this case, the third charger 133 may be additionally used instead of using a charging AC two-way charger that can simultaneously charge and supply AC power.

3 is a view illustrating a charging and power generation schedule when electricity is used at both a late night time and a day time in a fusion power supply method using a late night power according to another embodiment of the present invention.

Also in the case of FIG. 3, the same time as that described in FIG. 2 assumes that the nighttime power application time is 10 hours from 23:00 to 09:00. At this time, the first charger 131, the second charger 132, and the third charger 133 complete the charging during the late-night power application time (23 o'clock to 09 o'clock), and the electric consumption mechanism ( Assume the use of 170). First, the charging operation of the first charger 131, the second charger 132, and the third charger 133 is completed at 09 o'clock when the late-night electric power application time (23 o'clock to 09 o'clock) ends, and thereafter the day time Therefore, in order to supply power to the electricity consumption mechanism 170 in the electricity demand destination, the power generation unit 150 is driven to generate power.

First, the first charger 131 drives the power generation unit 150 for 10 hours from 09:00 to 19:00, and the power generated during this time is supplied to the electricity consumption mechanism 170 through the power generation unit 150. . At 19:00, power generation of the power generation unit 150 by the first charger 131 is terminated, and the power generation unit 150 is then driven through the second charger 132. The second charger 132 may drive the power generation unit 150 for 10 hours from 19 o'clock to 5 o'clock, and the power generated by the power generation unit 150 may operate the electricity consumption mechanism 170 in the electrical consumer for 10 hours. It can be operated. On the other hand, the 10-hour power application time (23 o'clock to 09 o'clock) is partially included within 10 hours of the second charger 132 driving the power generation unit 150, and during this time, the utilization rate of the electricity consumption mechanism 170 is Since it is low, the power generation unit 150 may be driven for a longer time than the power generation time (10 hours) of the second charger 132.

In view of this, the control unit 140 constituting the fusion power supply system using the late-night power of the present invention checks the state of charge of each charger (131, 132, 133), the power generation unit to reflect the remaining state of power It may be an efficient method to select and switch the chargers 131, 132, and 133 driving 150.

When the time for driving the power generation unit 150 through the second charger 132 ends at 07:00, the third charger 133 subsequently drives the power generation unit 150. The third charger 133 will drive the generator 150 for 10 hours from 05:00 to 15:00. From 15:00, the first charger 131 drives the power generation unit 150 again. Since the first charger 131 is charged between the previous 23 hours and the 09:00 hours, the first charger 131 is driven from 10 to 15:00. It will be possible to drive the power generation unit 150 for a time. Between 15:00 and 11:00 when the first charger 131 drives the power generation unit 150, the 2 nd charger 132 and the 3 rd charger 133 are charged from 23:00. It will repeat continuously for hours.

As such, when dividing the late-night power application time (23 o'clock to 09 o'clock) and the daytime time on a 24-hour basis, three chargers 131, 132, and 133 having a charge and generation capacity of 10 hours are used. It is possible to drive the internal electricity consumption mechanism 170 for 24 hours.

In addition, the converged power supply system using the midnight power of the present invention is sold to the Korea Electric Power Corporation or a third party when there is power remaining in the electricity consumption mechanism 170 among the power generated through the power generation unit 150 By doing so, it will be possible to generate additional revenue.

4 is a flowchart illustrating a fusion power supply method using midnight power according to an embodiment of the present invention.

 Referring to Figure 4, the power supply method using the late-night power of the present invention step of receiving the AC power (S10), determining whether the night time (S20), converting the AC power to DC power (S30), Charging a plurality of chargers (S40), determining whether it is day time (S50), sequentially providing power to a charger (S60), and supplying power to an electricity consumption mechanism (S70). can do. At this time, each step of the power supply method using the late-night power may be performed in the order shown in the drawings, but each step may be performed in a different order unless explicitly stated. In addition, some of the steps may be performed simultaneously, and some of the steps may be selectively performed.

First, the step of receiving the AC power (S10) is a step of receiving the AC power supplied from the power plant to the electric power source through the transmission line in the fusion power supply system of the present invention.

The step S20 of determining whether it is a late night time is a step of determining whether a time point at which the AC power is input is included in a range of the late night power application time. In Korea, midnight power application time is between 23 o'clock and 09 o'clock, and the power used at this time is low cost. In the case of midnight hours (23 o'clock to 09 o'clock), the AC power is converted into DC power to charge the chargers 131, 132, and 133 included in the fusion power supply system of the present invention.

In the step S30 of converting the AC power to the DC power, when it is determined that the time when the AC power is applied corresponds to the late night time, the chargers 131, 132, and 133 provided in the power supply system of the present invention are charged. In order to do this, the AC power is converted into DC power. An AC-DC converter can be used to convert AC power to DC power. Meanwhile, the step S30 of converting the AC power to the DC power may be performed after the step S20 of determining whether it is a midnight time, but the process of uniformly converting before performing the step S20 of determining whether it is a late night time. It could be done as well.

The charging of the plurality of chargers (S40) is a step of charging the chargers 131, 132, and 133 provided in the converged power supply system of the present invention using a relatively low cost late night power. The charger to be charged may be variously changed according to the expected amount of power used in the home, the current state of the electricity consumption mechanism 170, the size of the power generation unit 150, and the like. The charger that does not drive the power generation unit 150 in the late night time will correspond to the charging target.

The step S50 of determining whether it is day time is the step of determining whether the late night power application time ends and a relatively high fee is charged. If it is determined that the day time, the process of driving the power generation unit 150 to terminate the charging of the charger (131, 132, 133), and to supply power to the electricity consumption mechanism 170 will be performed.

In the step S60 of sequentially providing the charger power and generating power, a step of sequentially providing the power of the chargers 131, 132, and 133, which have been partially or fully charged, to the power generation unit 150 during the time determined as the weekly time. to be. The power generation unit 150 drives the motor by the power of the chargers 131, 132, and 133 which are sequentially provided, and generates power provided to the electricity consumption mechanism 170 in the turbine according to the rotation of the motor. The schedule for providing power of the chargers 131, 132, and 133 to the power generation unit 150 is controlled by the controller 140, which may be changed according to the capacity and duration of the chargers 131, 132, and 133. At this time, the power generation step (S60) checks the state of charge for the plurality of chargers (131, 132, 133), and the amount of power remaining in the plurality of chargers (131, 132, 133) Accordingly, the charger driving the power generation unit 150 may be selected and switched.

In step S70 of supplying power to the electricity consumption mechanism, the electricity consumption is supplied to the electricity consumption mechanism 170 by supplying power generated in the power generation unit 150 driven by using the power of the chargers 131, 132, and 133. It is a step of operating the instrument 170.

As described above, by dividing the late-night power application time (23 o'clock to 09 o'clock) and the day time on a 24-hour basis, when using the electricity consumption mechanism 170 only during the day time has a charge and generation capacity of 10 hours By using the two chargers 131 and 132, midnight electric power can be used to drive the electricity consumption mechanism 170 in the electricity demand source, and when the electricity consumption mechanism 170 is to be used for 24 hours, By using three chargers 131, 132, and 133 having charging and generating capacity, the object may be achieved.

Thus, according to the fusion power supply system and method according to an embodiment of the present invention, by using a plurality of chargers to charge the late-night power, by distributing the power generation according to the order of time during the day time, efficient use of inexpensive late-night power It can be effective.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It will be understood that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

110: AC input unit 120: converter
130: charging unit 131, 132, 133: charger
140: control unit 150: power generation unit
160: power supply unit 170: electricity consumption mechanism
171: home appliances 172: mobile products
173: plant equipment 174: other electrical equipment

Claims (10)

In the apparatus for supplying power to the electricity consumption mechanism in the electricity demand destination,
An AC input unit configured to receive an AC power supply supplied to an electric demand destination;
A converter for converting an AC power source having a midnight power supply time to a DC power source from among AC power sources applied through the AC input unit;
A charging unit configured to include a plurality of chargers and to charge DC power transmitted through the converter;
A controller configured to control the use of the DC power supply according to a time schedule of the plurality of chargers constituting the charging unit;
A power generation unit generating AC power using the DC power provided from the charging unit under the control of the controller; And
And a power supply unit for supplying the AC power generated in the power generation unit to the electricity consumption mechanism in the electric power demand destination.
The method of claim 1,
The charging unit is a fusion power supply system using a midnight power constituting the plurality of charger units so that the sum of the duration of the charger for supplying the DC power to the power generation unit is at least 24 hours or more.
The method of claim 1,
The charger is a fusion power supply system using a midnight electric power for two-way charging AC.
The method of claim 1,
The control unit is a converged power supply system using a midnight power to select and switch the charger for driving the power generation unit according to the state of charge of the plurality of chargers.
The method of claim 1,
The power generation unit is a motor for generating a rotational force using the DC power delivered from the charger according to the selection of the controller; And
Fusion power supply system using a midnight power consisting of a turbine for generating AC power by using the rotational force of the motor.
In the method of supplying power to the electricity consumption mechanism in the electricity demand destination,
Receiving an AC power source;
Determining whether it is night time;
In the case of late night time, converting the AC power to DC power to charge a plurality of chargers;
Determining whether it is day time;
When the day time, driving the power generation unit by using the power of the plurality of chargers in sequence; And
Fusion power supply method using a midnight power comprising the step of supplying power generated in the power generation unit to the electricity consumption mechanism.
The method of claim 6,
And the number of the plurality of chargers is such that the sum of durations of the chargers supplying power to the power generation unit is at least 24 hours or more.
The method of claim 6,
Charging the plurality of chargers
Fusion power supply method using a midnight power to perform the step of driving the power generation unit at the same time charging.
The method of claim 6,
Driving the power generation unit
12. A method of supplying fusion power using a late night power for selecting and switching a charger for driving the power generation unit according to a state of charge of the plurality of chargers.
The method of claim 6,
If there is power remaining in the electricity consumption mechanism from the power generated by the power generation unit, the fusion power supply method using a midnight power further comprising the step of selling to KEPCO or a third institution.

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