JPH10262345A - Solar battery power-generating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery power-generating system which makes it possible to prevent the occurrence of secondary disasters, and to use power generated by a solar battery apparatus safely, even if service is interrupted. SOLUTION: This is a solar battery power-generating system which supplies power generated by a solar battery apparatus 1 to an inverter device 3 having an autonomously operating function through a DC-side switch 10, converts it into AC by this inverter device 3, and supplies it to household loads, and a gas leakage detector 9 is provided between the DC-side switch 10 and the inverter device 3, and the DC-side switch 10 is controlled in accordance with the detection result of this gas leakage detector 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generation system installed on the roof of a general house.

[0002]

2. Description of the Related Art In recent years, attention has been paid to a photovoltaic device which is installed outdoors to generate photovoltaic power due to the problem of the global environment and the like. Systems that cover power consumption have been put to practical use.

FIG. 2 is a configuration diagram showing a conventional residential solar cell power generation system. As shown in FIG. 2, DC power generated from a solar cell device 1 installed on a roof is supplied from a DC-side switch 2 to an inverter device 3, and the DC power is converted into AC by the inverter device 3. This AC power is supplied from the distribution board 4 to an electric system such as the normal outlet 5. Then, power is supplied to a domestic load 6 such as a television connected to the normal outlet 5.

The electric system in the home is also configured to be supplied with electric power from a commercial electric power system 7 via a distribution board 4, and is supplied from the solar cell device 1 at night or the like. When the power is insufficient, the power from the power system 7 can be used.

On the other hand, when the electric power generated by the solar cell device 1 is more than the usage of the domestic load 6, the surplus electric power flows backward from the distribution board 4 to the electric power system 7, and the surplus electric power is It is configured to sell electricity.

[0006] By the way, the power system 7 due to a disaster such as an earthquake.
In the event of a power outage, it is convenient if the electric equipment in the home can be operated by the power supply from the solar cell device 1.

For this purpose, as shown in FIG. 3, an emergency outlet 8 is provided in the inverter device 3 having an independent operation function. When a power failure occurs in the power system 7, power is supplied to the domestic load 6 from the emergency outlet 8 provided in the inverter device 3. By doing so, the household load 6 such as a television can be used by the power generated by the solar cell device 1 even when the power system 7 is out of power.

In the above-described system having the inverter device 3 with the self-sustaining operation function, when the power system 7 is out of power, the power distribution is performed so that the power generated by the solar cell device 1 does not flow into the power system 7. The panel 4 and the electric system in the house including the inverter device 3 are separated.
This is because there is a risk of electric shock or the like if power is supplied to the power system 7 when a failure has occurred in the power system 7.

For this reason, the normal outlet 5 connected to the distribution board 4 cannot be used. Therefore, when the power system 7 is out of power, the emergency outlet 8 completely separated from the power system 7 is used. It has become.

[0010]

As described above, in a residential solar cell power generation system provided with an inverter device having an independent operation function, if a certain amount of solar radiation occurs even when the power system Electric power in the home can be used by the power generation of the device 1. However, in the case of a disaster such as an earthquake, not only a power outage but also gas leakage may occur. Regardless of the occurrence of gas leaks in the house, supplying power generated by the solar cell device 1 to the house may cause a secondary disaster such as a gas explosion.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and prevents secondary disasters and the like.
An object of the present invention is to provide a solar cell power generation system that can safely use power generated by a solar cell device even when a power failure or the like occurs.

[0012]

According to the present invention, power generated in a solar cell device is supplied to an inverter device having a self-sustained operation function via a switch, and the inverter device converts the power into an alternating current to generate a power. , A gas leak detecting means is provided between the switch and the inverter device, and the switch is controlled according to a detection result of the gas leak detecting means. .

According to the present invention, even if the solar cell power generation system automatically operates at the time of a power outage of the power system, if there is a gas leak in the house, the power supply from the solar cell to the house can be immediately cut off. Can prevent secondary disasters such as gas explosions.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a solar cell power generation system according to one embodiment of the present invention.

As shown in FIG. 1, DC power generated from a solar cell device 1 installed on a roof is supplied to a DC side switch 1.
0 to the inverter device 3 with the self-sustaining operation function. The gas leak detector 9 is provided between the DC side switch 10 and the inverter device 3 with an independent operation function. In this embodiment, the DC side switch 10 is provided outside the house, and the gas leak detector 9 is provided indoors.

The DC-side switch 10 opens and closes according to the output of the gas leak detector 9. That is,
When the gas leak detector 9 does not detect a gas leak in the room, the DC-side switch 10 is turned on,
Power from the solar cell device 1 is supplied to the inverter device 3. When the gas leak detector 9 detects a gas leak in the room, the switch is turned off, the output from the solar cell device 1 is cut off, and the power supply from the solar cell device 1 to the room is stopped.

The inverter device 3 with a self-sustaining operation function converts DC power supplied from the solar cell device 1 through a DC switch 10 into AC, and converts the DC power into a normal power system at home through a distribution board 4. Supply power to outlet 5. Power from the solar cell device 1 is supplied from the outlet 5 to a domestic load 6 such as a television.

As described above, electric power in the home is also supplied with electric power from the commercial electric power system 7,
When the power supplied from the solar cell device 1 is insufficient, such as at night, the power from the power system 7 can be used.

When the electric power generated by the solar cell device 1 exceeds the usage of the domestic load 6, the surplus electric power flows backward from the distribution board 4 to the electric power system 7, and is sold to the electric power company. I do.

As described above, when a power failure occurs in the power system 7 due to a disaster such as an earthquake, the distribution board 4 disconnects the connection to the electric system in the house, and connects the power system 7 to the power system 7 from the solar cell device 1. Power does not flow out.

In the solar cell power generation system provided with the inverter device 3 having the self-sustaining operation function, even when the power system 7 is out of power, if there is a certain amount of solar radiation, the power generated by the solar cell device 1 is provided in the inverter device 3 By using the emergency outlet 8, the home load 6 such as a television can be used.

According to the present invention, when the power system 7 is out of power, when the solar cell device 1 generates power, the gas leak detector 9 first operates. When the gas leak detector 9 detects a gas leak inside the room, the DC side switch 1 outside the room is immediately turned on.
The switch 0 is turned off to prevent the power from the solar cell device 1 from being supplied indoors, and to prevent a disaster such as a gas explosion.

On the other hand, when the gas leak detector 9 detects that there is no gas leak, the electric power from the solar cell device 1 is supplied to the inverter device 3 through the DC switch 10. Then, the power generated by the solar cell device 1 is transferred to the emergency outlet 8 provided in the inverter device 3 having an independent operation function.
, A home load 6 such as a television can be used.

In this manner, the power generated by the solar cell device 1 can be used to use the home load 6 such as a television even when the power system 7 is out of power without causing a secondary disaster such as a gas explosion. it can.

As described above, in the system including the inverter device 3 with the self-sustaining operation function, the power generated by the solar cell device 1 is divided so that the power generated by the solar cell device 1 does not flow to the power system 7 when the power system 7 is cut off. The electrical system in the house is disconnected from the switchboard 4. For this reason, since the normal outlet 5 connected to the distribution board 4 cannot be used, the emergency outlet 8 completely separated from the power system 7 is used.

This is because the function of the distribution board 4 is provided to prevent the power from the solar cell device 1 from flowing into the power system 7 at the time of a power failure. Therefore, if a switch is provided between the power system 7 and the distribution board 4 so as to separate the house from the power system 7 in the event of a power failure, the normal outlet 5 can be used even in the event of a power failure. it can.

[0027]

As described above, according to the present invention, even if the solar cell power generation system automatically operates at the time of a power outage, if there is a gas leak in the house, the solar cell is immediately disconnected from the house. The power supply to the plant can be cut off, and secondary disasters such as gas explosions can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a solar cell power generation system of the present invention.

FIG. 2 is a configuration diagram showing a conventional solar cell power generation system.

FIG. 3 is a configuration diagram showing a conventional solar cell power generation system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solar cell apparatus 10 DC side switch 3 Inverter apparatus with an independent operation function 4 Distribution board 5 Normal outlet 6 Household load 7 Electric power system 8 Emergency outlet 9 Gas leak detector

Claims (1)

[Claims] An electric power generated by a solar cell device is supplied to an inverter device having a self-sustaining operation function via a switch, and is converted into an alternating current by the inverter device and supplied to a power consuming unit. A solar cell power generation system, wherein a gas leak detecting means is provided between the switch and the inverter device, and the switch is controlled according to a detection result of the gas leak detecting means.