JPH11332125A - Residential home power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a residential home supply system, which uses both a power obtained from a private power plant mainly using wind power generators and a commercial power supplied from a power utility and supplies the power from the private power plant and the commercial power alternately, while the energy sawings and the environmental preservation are taken into account. SOLUTION: The input side of the indoor distribution system of a residence power supply system is divided into a commercial power system and a private power plant system through a switching circuit 6. The private power plant system has wind power generators 2A and 2B installed outdoors, an accumulator 9, in which a power obtained by the wind power generators 2A and 2B is accumulated and an inverter 14 which converts a DC power accumulated in the accumulator 9 into an AC power and outputs the AC power to the distribution system. Furthermore, a charger 17 which is connected to the commercial power system and converts the AC power of the commercial power system into a DC power to accumulate the DC power in the accumulator 9, when the accumulation value of the accumulator 9 is lowered to a value below a predetermined lower limit and a discharge resistor 18, through which the power obtained by the wind power generators 2A and 2B is discharged are connected to the private power plant system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residential power supply system, and more particularly, to a residential power supply system that can use both a commercial power supply and electric power generated by a wind power generator or the like to save energy and protect the environment. The present invention relates to a power supply system for use.

[0002]

2. Description of the Related Art In general, electric energy which can be easily converted into heat sources, light sources, power sources, etc., is widely used as energy required for daily life and industry. Most of the electric energy is supplied from electric power companies. Power. For example, according to a general house, an input terminal of indoor wiring is connected to a commercial power supply transformed into AC 100V or the like via a service line to receive power. In particular, indoor wiring is branched from a distribution board containing an earth leakage circuit breaker and the like, and connected to outlets in each room, and lighting and electric devices can be connected to these outlets for use.

By the way, the electric power is generated using thermal power obtained from fuel of heavy oil or coal or other fossil fuels, nuclear power using nuclear fuel such as uranium, or hydroelectric power, and this is converted to a rated voltage through a substation or the like. It is being supplied to houses and others while being transformed.

[0004]

However, according to thermal power generation, environmental pollution due to emission of carbon dioxide and nitrous oxide has been regarded as a problem, and nuclear power generation has many problems such as radioactive leakage and treatment of radioactive waste. There are difficult questions. Also,
Hydropower that uses water resources has many difficulties in terms of destruction of nature and cost due to dam construction. Therefore,
Solar power and wind power are in the spotlight as natural energy for power generation instead of water resources, and they are in the stage of commercialization as commercial power sources.
This type of power generation equipment has the drawbacks that it is difficult to obtain electric power for many households in commercial use, and it is difficult to stably supply electric power because the power generation amount fluctuates greatly due to weather factors.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide electric power obtained by private power generation mainly using a wind power generator and commercial electric power supplied from electric power companies. It is an object of the present invention to provide a residential power supply system capable of alternately and stably supplying power from both systems while saving energy and preserving the environment.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is a residential power supply system in which the input side of an indoor power distribution system is divided into a commercial power system and a private power generation system via switching means. The private power generation system has a wind power generator installed outdoors, a storage battery for storing the power obtained by the wind power generator, and an inverter for converting the power stored in the storage battery to AC and outputting it to the distribution system. It is intended to provide a residential power supply system comprising:

In a further preferred aspect, the present invention is a residential power supply system in which an input side of an indoor power distribution system is divided into a commercial power system and a private power generation system via switching means. Has a wind power generator installed outdoors, a storage battery for storing the power obtained by the wind power generator, and an inverter for converting the power stored in the storage battery to AC and outputting the AC power to the power distribution system. The system includes a charging unit that is connected to a commercial power system when the amount of power stored in the storage battery falls below a predetermined lower limit and charges the power by converting the power into DC, and the amount of power stored in the storage battery exceeds a predetermined upper limit. Discharge means for discharging the power obtained by the wind power generator is connected when the power supply in the private power generation system falls below a predetermined value. There is provided a residential power supply system comprising a changeover switch for switching from the house power line to a commercial power system.

[0008] In particular, the private power generation system includes a solar cell panel installed outdoors in addition to a wind power generator for charging a storage battery.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, FIG. 1 shows an outline of a residential power supply system according to the present invention. In FIG. 1, reference numeral 1 denotes a commercial power supply capable of supplying power of, for example, AC 100 V. A power supply system according to the present application includes, in addition to the commercial power supply 1, a wind power generator installed in a garden or the like as a power generation device installed outdoors. 2 and a solar cell panel 3 mounted on a roof or the like, and can also receive electric power from these power generating devices.

Reference numeral 4 denotes a distribution board having an earth leakage breaker and the like.
The distribution board 4 is connected to an outlet provided in each room to form a distribution system. The output side of the distribution system is connected to a load facility 5 such as a lighting device or an electric device, and the input side is connected to a commercial power system connected to the commercial power supply 1 via a switching circuit 6 as a switching unit, and a wind power generator. 2 and a private power generation system connected to a power generation device including the solar cell panel 3.

Reference numeral 7 denotes a known power saving device interposed in the commercial power system.
6V) to the load equipment 5 while regulating the pressure to reduce the power consumption by one.
It is configured to save 0 to 15%.

On the other hand, a control panel 8 connected to the power generator, a storage battery 9 connected to the control panel for storing the power generated by the power generator, and a converter 10 connected to the storage battery are sequentially interposed in the private power generation system. Is done. The control panel 8 is shown in FIG.
As shown in the figure, the electric power obtained by the wind power generator 2 is
V), and has a rectifier 11 for charging the storage battery 9. The rectifier 11 receives wind speed and wind direction information from an anemometer 12 installed adjacent to the wind power generator 2, monitors the wind speed, and monitors the wind speed. For example, when the wind speed exceeds 20 m / s), the braking circuit 13 is configured to fix and protect the wind turbine of the wind power generator 2. The wind power generator 2 is, for example, World Power Technology (USA)
Power Technologies), having a windmill rotation diameter of 1.5 m and a rated wind speed of 13 m / s,
It is configured such that the AC power of W is generated, and when the wind speed exceeds 15 m / s, the windmill becomes horizontal in the furring state.

The storage battery 9 is, for example, a lead storage battery having a storage capacity of 160 amp-hours (Ah) at 12 V DC, and can output the power stored therein to the distribution system via the converter 10. Here, the transducer 10 is, for example, Trace Engineering (UK)
This is a charger / inverter device made by an engineer, which converts the charging power of the storage battery 9 into AC and outputs it to a power distribution system as described later, and when the storage amount of the storage battery 9 falls below a predetermined lower limit. A charging unit is connected to a commercial power system to charge the storage battery 9 while converting the power into direct current (DC 12 V), and a built-in switch (not shown) for switching input and output of the inverter 14 and the charging unit.

FIG. 3 is a system diagram of the present invention, and FIG.
Shows the electric circuit diagram. As is clear from these figures, the power generation device has, for example, two wind power generators 2A and 2B and solar cell panels 3A and 3B.
Two control panels 8A and 8B are provided corresponding to A and the solar cell panel 3A, and the wind power generator 2B and the solar cell panel 3B. Although two storage batteries 9 are provided for both systems, only one is shown in the figure. The electric power generated by the wind power generators 2A, 2B and the solar cell panels 3A, 3B is supplied to the storage batteries 9 via the control panels 8A, 8B as described above.
, And the charged power is output as AC power (100 V AC) to the distribution system via the switching circuit 6 via the inverter 14 built in the converter 10.

Here, the switching circuit 6 has a switching switch 15 for switching an electric circuit connected to the power distribution system from the private power generation system to the commercial power system when the amount of electric power (current, voltage) in the private power generation system falls below a predetermined value. The changeover switch 15 is operated by a detector 16 such as a relay connected to the output side of the control panel 8A, 8B to the storage battery 9, and contacts SW1, SW2 between the distribution system, the commercial power system, and the private power generation system.
Are alternately opened and closed. According to this, for example, when the amount of power generated by the power generation device is exhausted, the output power to the distribution system can be automatically switched to the commercial power system.
In addition, as another means, the storage amount (voltage) of the storage battery 9 is used.
May be detected by the voltmeter 16 and the changeover switch 15 may be operated based on the detection signal. According to this, even when there is no power generation by the power generation device, the range to the power distribution system within the range of the power stored in the storage battery 9 is controlled. The power supply can be maintained.

The changeover switch 15 is connected to the contact SW2
And a contact SW3 that opens and closes in synchronism with the contact SW3.
Is input, the charge power of the storage battery 9 can be output to a specific output terminal as DC.

As is apparent from FIGS. 3 and 4, the private power generation system includes a charger 17 as charging means for charging the storage battery 9 with electric power from the commercial power system, and a wind power generator 2.
A discharge resistor 18 composed of a heat storage water heater or the like is connected as a discharging means for discharging the power obtained by A, 2B or the solar cell panels 3A, 3B in a separate system from the inverter 14.
Here, the charger 17 is built in the converter 10 as a unit integral with the inverter 14 as described above. When the charged amount of the storage battery 9 falls below a predetermined lower limit (discharge end voltage), the built-in charger 10 is installed. Switch is inverter 14
Is switched to the charger 17 side, and the electric power of the commercial power source 1 is supplied from the commercial power system through the charger 17 to the direct current (DC1).
The storage battery 9 is charged while being converted to 2 V), and the charged amount is restored to a certain level. Therefore, it is possible to prevent a sulfation phenomenon and a decrease in charge capacity due to overdischarge of the storage battery 9.

The discharge resistor 18 is connected in parallel with the storage battery 9 via a charge controller 19, and the power generated by the power generator when the amount of power stored in the storage battery 9 exceeds a predetermined upper limit (charging end voltage). Is output to the discharge resistor 18 via a charge controller 19 including a relay or the like. Therefore, the storage battery 9 can be prevented from being overcharged and its life can be extended. The charge end voltage can be detected by the voltmeter 16 or the like.

[0019]

As is clear from the above description, according to the present invention, since the commercial power system and the private power system are used together, power transmission by the private power system is possible even when the power transmission of the commercial power system is stopped. In particular, the private power generation system is provided with a wind power generator for power generation, so that it is possible to supply power without harming the environment by saving energy, and to store the power obtained by the wind power generator in a storage battery while inverting the inverter. The power is output to the distribution system via the power supply, so that even when a predetermined wind power cannot be obtained, power can be stably supplied from the storage battery.

Further, since the private power generation system is connected to a commercial power system when the amount of power stored in the storage battery falls to a predetermined lower limit and connected to charging means for charging the power to the storage battery, the excess power of the storage battery is used. Discharge can be prevented, the sulfation phenomenon can be eliminated, and a decrease in charge capacity can be prevented. Furthermore, since the private power generation system is connected to discharging means such as a heat storage water heater that discharges the power obtained by the wind power generator when the amount of power stored in the storage battery exceeds a predetermined upper limit value, the storage battery has an excess capacity. Charging can be prevented and its life can be extended.

Further, the switching means has a switch for switching the electric circuit connected to the power distribution system from the private power generation system to the commercial power system when the amount of power in the private power generation system falls below a predetermined value. And the natural energy can be used effectively by minimizing the power consumption by the power source. In particular, since a solar power panel is provided in addition to a wind power generator for private power generation, fluctuations in power generation due to weather conditions can be reduced as much as possible, such as by converting sunlight into electric power and supplementing it even when wind power is low.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a residential power supply system according to the present invention.

FIG. 2 is a circuit diagram of a control panel in the system.

FIG. 3 is a system diagram of the system.

FIG. 4 is an electric circuit diagram of the system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Commercial power supply 2 (2A, 2B) Wind power generator 3 (3A, 3B) Solar panel 4 Distribution board 5 Load equipment 6 Switching circuit 7 Power saving 8 (8A, 8B) Control panel 9 Storage battery 10 Converter 14 Inverter 15 Changeover switch 16 Detector 17 Charger 18 Discharge resistance

Claims (3)

[Claims] 1. A residential power supply system in which an input side of an indoor power distribution system is divided into a commercial power system and a private power generation system via switching means, wherein the private power generation system is installed outdoors. And a storage battery for storing the power obtained by the wind power generator, and an inverter for converting the power stored in the storage battery into AC and outputting the AC to a power distribution system. 2. A residential power supply system in which an input side of an indoor power distribution system is divided into a commercial power system and a private power generation system via switching means, wherein the private power generation system is installed outdoors. A storage battery that stores the power obtained by the wind power generator, and an inverter that converts the power stored in the storage battery into alternating current and outputs the alternating current to the power distribution system, and the power generation amount of the storage battery is stored in the private power generation system. A charging means for connecting to a commercial power system when the voltage falls below a predetermined lower limit to convert the power into direct current and charging the power; and a power obtained by the wind power generator when the amount of power stored in the storage battery exceeds a predetermined upper limit. Is connected to a discharge means for discharging the power, and the switching means switches the electric circuit connected to the power distribution system from the private power generation system to the commercial power system when the amount of power in the private power generation system falls below a predetermined value. Residential power supply system having a changeover switch. 3. The residential power supply system according to claim 1, wherein the private power generation system includes a solar cell panel installed outdoors for charging a storage battery.