KR20090030876A - Ground for formation is post insulation model simplicity hand change electron equipment - Google Patents

Abstract

A ground insulated receiving and transmitting device is provided to prevent breakdown of the device due to a remaining charge and an electric shock due to a charging current by grounding both ends of a power fuse. A gas insulated receiving and transforming device includes a ground(14) and a ground switch(15). The ground is connected to the automatic section switch(12). The automatic section switch is installed between an inlet(11) of a circuit and a power fuse(13). A ground switch is installed between the power fuse and a metering outfit(16). A circuit is embedded in an external case(10). A user connects the ground and both ends of the power fuse by operating the ground switch and the automatic section switch. The automatic section switch and the ground switch are integrated.

Description

Ground for formation is post insulation model simplicity hand change electron equipment}

The present invention relates to an air insulated simple water substation having a ground, and more particularly, in an air insulated simple water substation, wherein an automatic failure type switch is installed between an inlet and a power fuse of a circuit formed inside the water substation. A grounding switch connected to the power fuse and the transformer transformer transformer for power supply and supply, the user being operated in an insulated state from the converter; The present invention relates to a gas insulated simple water transformer having a built-in circuit and connected to or disconnected from the ground by operating the ground switch and the automatic breakdown switch.

The present invention relates to a water transformer device for supplying the building unit or plant unit by stepping down to commercial voltage by receiving high voltage, and more specifically, automatic fault switchgear, lightning arrester, power fuse, transformer transformer for power supply instrument By storing equipment necessary for the construction of water transformers such as transformers, circuit breakers, and circuit breakers in a single enclosure, a compact configuration is possible. The present invention relates to a simple air-insulation type air insulated device having a ground that maximizes safety by preventing an electric shock of an operator due to a charging current and a failure of a device or an insulation due to residual charge.

In a private electric facility such as a building or a factory, the amount of power demanded is high, so it is impossible to receive electricity that can be used as it is from a utility company, such as a general electric facility of 110V or 220V low voltage.

Therefore, in general private electric facilities, high voltage of 3,300V or 6,600V should be received from power distribution line of substation and transformed into commercial voltage.In particular, in private electric facilities of large buildings, special high voltage of 22.9kV is received and then returned to commercial voltage. The transformer must be transformed, and the device that enables this is a water substation.

Water substation equipment includes a power receiving facility for receiving high voltage and special high voltage supplied from a substation, a substation facility for stepping down high and special high voltage received from a substation to a commercial voltage, and electric equipment, lighting, etc. of each part in the building. Distribution equipment for supplying power, and switch devices and other safety devices are integrally formed to supply electricity safely and efficiently into the building.

1 shows a disconnected diagram of a water substation apparatus 100 according to the prior art.

The high voltage power is received from the substation through the distribution system composed of the overhead distribution line and the underground distribution line to the water substation apparatus 100 of each customer, and the high voltage power supplied in this way is commercially available through the water substation apparatus 100 having the configuration as shown in FIG. It is stepped down to voltage and supplied to the customer.

At this time, there are a number of methods of receiving power using a high-voltage consumer power distribution apparatus, such as a cubicle type using a panel, a frame type for receiving power by installing a frame, and an H-type power receiving method for receiving power using electric poles. The water substation apparatus 100 according to the present invention is a general cubic type special high voltage water substation apparatus using a panel. As shown in FIG. 1, an inlet 111 and an inlet port receiving electric power from a distribution line are provided in an enclosure 101. And automatic failure switchgear 113 connected to the downstream of 111 and sending power supplied through the inlet 111 and installed on the load end line and blocking the line to protect the downstream equipment in case of overload accident at the load end. And an arrester 115 connected to the downstream of the automatic breaker breaker 113 and mounted to protect the load breaker when an abnormal voltage occurs in the load breaker, and the automatic breaker breaker 113. Is connected to the downstream of the power supply and the downstream of the power fuse 117 and the high-voltage connected to the current of the fault current to protect the downstream equipment when the fault current is energized due to a short circuit or ground fault And a transformer current transformer 119 for power supply and supply, which facilitates measurement of a large current, an integrated power meter 121 for measuring the amount of power connected to the transformer transformer current transformer for supply and demand, and a transformer for power supply and supply A transformer 125 connected to the downstream of the current transformer 119 and stepping down the received high voltage to a commercial voltage required by the user, and a parking short circuit 127 connected to the downstream of the transformer 125 and blocking the commercial voltage when necessary. And a plurality of wiring breakers 129 connected to the parking terminal 127 and blocking each load when necessary.

In the case of the water substation according to the prior art, the conductors connecting the parts are made of bare conductors, so there is a risk of electric shock or accidents caused by animals. Due to this, there is a safety critical problem that the accident range can be extended to the whole area in the event of an internal accident, and even though the automatic breakdown switch is opened due to an overload accident and a short circuit accident, there is a charging current in the equipment and insulation of the load end Due to the maintenance work such as replacement of the power fuse or the replacement of downstream equipment, the worker must ground manually.However, grounding inside the panel with complicated conductors does not provide safety to the operator from electric shock or arcing. Mistakes or incomplete grounding can lead to personnel accidents, especially power The operative is also a problem that the fuse is to be broken at the time of grounding both the power across the fuse.

The present invention relates to an air insulated simple water substation having a ground, and more particularly, in an air insulated simple water substation, wherein an automatic failure type switch is installed between a power inlet and a power inlet of a circuit formed inside the water substation. A grounding switch connected to the power fuse and the transformer transformer transformer for power supply and supply, the user being operated in an insulated state from the converter; It is an object of the present invention to provide an air-insulated simple water transformer having a ground, wherein the circuit is built and the ground switch and the automatic breakdown switch are operated to connect or disconnect the ground.

The present invention installs the ground at both ends of the power fuse and operates from the outside completely insulated from the converter, thereby promoting the safety of the operator from electric shock or arc during maintenance work, and the power fuse is operated because the ground at both ends of the power fuse at the same time Even in the case of disconnection, all devices downstream of the inlet in the water substation can be grounded to prevent electric shock and failure.

The present invention is an air insulated simple water-switching device, connected to an automatic breakdown switch 12 provided between an inlet 11 and a power fuse 13 of a circuit formed inside the water-stationary device, wherein the power fuse (13) and a ground switch (15) installed between the power supply (13) and the transformer transformer (16) for power supply and supply between the power fuse (13) and the transformer for transformers (16). ; The circuit is built in, and the user operates the ground switch 15 and the automatic breaker switch 12 in an insulated state from the converter, and is simultaneously connected or disconnected with the ground 14.

At this time, the ground switch 15 is a form in which both ends of the power fuse 13 are in contact at the same time as one end of the rotating portion is coupled to the center of the plate-shaped ground switch 15 by a hinge, the other end of the rotating portion is the automatic failure The other side of the switch 12 is connected to the ground operation switch which is coupled to the hinge is operated manually or automatically connected to both ends of the power fuse 13 to be grounded at the same time.

Then, both ends of the power fuse 13 are simultaneously connected to the ground 14, and the automatic breaker switch 12 and the ground switch 15 are integrated.

That is, the present invention will be described in detail with reference to an embodiment as follows.

Inlet 11 receives electric power from the distribution line in the enclosure, automatic breakdown switch 12 connected downstream of the inlet 11, and lightning arrester 17 connected downstream of the automatic breakdown switch 12. And, a power fuse 13 connected downstream of the automatic breaker switch 12, a transformer current transformer 16 for a power supply instrument connected downstream of the power fuse 13, and a power supply instrument An integrated power meter 30 connected to the secondary side of the transformer current transformer 16 to measure the amount of power, a transformer 60 connected to the primary side downstream of the transformer current transformer 16 for the power supply and demand instrument, and a transformer ( The parking short circuit 50 connected to the secondary side of the 60 and a plurality of wiring breakers 40 connected to the downstream of the parking short circuit 50 and cut off each load, if necessary, are included.

At this time, the automatic breakdown switch 12 installed between the inlet 11 and the power fuse 13 may be equipped with a power fuse 13, the transformer current transformer 16 for the power supply 13 and power supply A ground switch 15 installed between the grounds 14 between the grounds; Since the user operates the ground switch 15 and the automatic breaker switch 12 in an insulated state from the converter, both devices of the ground 14 and the power fuse 13 are connected at the same time. Grounded to prevent electric shock and failure.

FIG. 5 is a state where the automatic breaker switch 12 is connected to send power downstream, and the ground switch 15 attached to the automatic breaker switch 12 is disconnected from the ground 14, and FIG. Both the switch 12 and the ground switch 15 attached to the automatic breakdown switch 12 are disconnected and are disconnected from the ground 14 without sending power downstream, and FIG. 7 shows the automatic breaker switch 12 ) Is disconnected so that the ground switch 15 attached to the automatic breaker switch 12 does not send power downstream and connects both ends of the power fuse 13 to the ground 14 at the same time. All downstream devices are grounded.

1 is a block diagram of an internal circuit of a simple water transformation apparatus according to the prior art,

2 is a layout view of the internal device of the simple water transformation apparatus according to the prior art,

3 is an internal circuit diagram of a ground insulated simple water substation having a ground according to the present invention;

4 is a device arrangement diagram of an air insulated simple water substation having a ground according to the present invention;

Figure 5 is a state diagram showing the automatic breakdown switch input (electrical connection), the ground switch open (ground and disconnection) during the operation of the ground insulation type automatic breakdown switch with earthing switch according to the present invention,

6 is a state diagram showing the automatic breakdown switch opener (disconnected line), the ground switch open (ground and disconnection) during operation of the ground insulation type automatic breakdown switch with ground switch according to the present invention,

Figure 7 is a state diagram showing the automatic breakdown switch opener (disconnected wire), the ground switch input (connected to the ground) during operation of the ground insulation type automatic breakdown switch with ground switch according to the present invention,

<Explanation of symbols for main parts of the drawings>

10: Enclosure 12: Automatic failure switch

30: integrated power meter 40: circuit breaker

50: main breaker 60: transformer

Claims (3)

In the air insulated simple water conversion device, It is connected to the automatic breakdown switch 12 provided between the inlet 11 and the power fuse 13 of the circuit which is configured inside the water substation;  A grounding switch installed between the power fuse 13 and the transformer current transformer 16 for power supply and supply installed between the power fuse 13 and the transformer current transformer 16 for power supply and supply; 15); The circuit is built in the enclosure (10), the ground switch 15 and the air insulation type simple earth with a ground, characterized in that for operating or disconnecting the ground (14) at the same time by operating the automatic breaker switch 12 Water substation device. The method of claim 1, Both ends of the power fuse (13) at the same time connected to the ground (14), automatic breakdown type switchgear and ground switch 15 characterized in that the grounding switch is formed, characterized in that the ground-type simple water substation. The method of claim 1, The ground switch 15 is a form in which both ends of the power fuse 13 are in contact at the same time, the one end of the rotating portion is coupled to the center of the plate-shaped ground switch 15 by a hinge, the other end of the rotating portion is the automatic failure switch A ground-insulated simplified water transformer device having a ground formed thereon, which is connected to a ground operation switch which is coupled to a hinge of the other side and is operated manually or automatically and simultaneously contacts and grounds both ends of the power fuse 13. .

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