KR200312391Y1 - Apparatus of non-stop electric current power supply - Google Patents

Abstract

The present invention relates to an uninterruptible power supply device, and when replacing a substation facility and an existing power related facility, transports a work near the facility, and installs a live insulation sheet to exposed wires and busbars when working at a regular power source. Install the work bypass jumper, install the switching SW in the interrupted state at the regular power supply, prepare a replacement breaker, connect the live jumper to the primary and secondary lines, and insert the switching SW in sequence. After checking the abnormality of voltage, current, and power in the live state, cut off the existing power supply of the existing breaker, transport it to the side of the replacement breaker, install the bypass jumper for temporary live work again, and install the switching SW in the blocked state. To the circuit breaker by connecting the bypass jumper for live work to the primary and secondary lines, injecting the switching software sequentially, and re-installing the Turn on the power, check the abnormality of voltage, current and power, cut off the replacement breaker and switching SW, remove the replacement breaker primary and secondary live bypass bypass jumpers, and replace the existing breaker After the installation, replace the breaker for replacement, shut off the temporary breaker, cut off the switching SW, and remove the bypass jumpers 1 and 2 for live work.

Description

Uninterruptible Power Supply {APPARATUS OF NON-STOP ELECTRIC CURRENT POWER SUPPLY}

The present invention relates to an uninterruptible power supply, and more specifically, the voltage, phase, frequency, and load sharing capability of a constant power supply during renovation or safety check of a private water substation facility for a large number of consumers such as buildings, factories, and apartment houses. The present invention relates to an uninterruptible power supply for preventing a power failure and loss of a customer by matching power to a generator so that power is supplied without interruption.

In general, as shown in Figure 1, the power supplied from the Korea Electric Power is lowered to a voltage of 220V or 380V through the columnar transformer 110 at a special high voltage of 22.9KV.

That is, the power of 22.9KV extra high voltage supplied through the extra high voltage distribution line 100 is changed to a voltage of 220V or 380V through the pole transformer 110 and supplied to each home or factory through the low voltage distribution line 120. .

By the way, when the transformer 110 and the wiring line 120 is abnormal or when maintenance work is performed, the transformer car uninterruptible method was used, but the electrostatic method is carried out during the maintenance work or safety check of the self-powered water substation facility. As a result, there was a problem that it is not possible to supply electricity to large-scale customers such as buildings, factories and apartment houses for a long time.

Accordingly, the present invention is to solve the above-mentioned conventional problems, and the voltage, phase, frequency, and load of the constant power supply during the maintenance work or safety check of a large-scale consumer's water substation equipment of large-scale customers such as buildings, factories, and apartment houses. The purpose of the present invention is to provide an uninterruptible power supply for preventing a power failure and loss of a customer by matching a generator power with a power sharing capability so that power is supplied without interruption.

1 is a view for explaining the working state by the uninterruptible construction method in a typical transformer car.

2 is a control block diagram illustrating an uninterruptible power supply using a bypass technique as an embodiment of an uninterruptible power supply according to the present invention.

3 is a more detailed view of FIG. 2;

4 is a control block diagram illustrating an uninterruptible power supply using a parallel operation technique as another embodiment of the present invention.

5 is a control block diagram showing an uninterruptible power supply using a generator driving method as another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: cubicle box 20: conventional breaker

30, 31: bypass jumper for live work 40, 41: switching SW

50: replacement circuit breaker 60, 61: SW

70: transformer 80: frequency tuner

90: generator

The uninterruptible power supply device according to the present invention for achieving the above object is to share the voltage, phase, frequency and load of the constant power during the maintenance work or safety check of the private water substation facilities of large-scale customers such as buildings, factories and apartment houses An uninterruptible power supply that supplies power without interruption by matching generator power to a capacity, comprising: an existing breaker mounted inside a cubicle box, installed near the cubicle box, and for live work on a regular power supply with a switching SW shut off. It is characterized by comprising a bypass circuit breaker installed by installing a bypass jumper cable, to configure a bypass circuit.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

FIG. 2 is a control block diagram illustrating an uninterruptible power supply using a pipass method as an embodiment of an uninterruptible power supply according to the present invention, and FIG. 3 is a view showing FIG. 2 in more detail.

As shown in the drawing, the present invention is designed to match the power supply of the generator to the voltage, phase, frequency, and load sharing capability of the regular power supply during the maintenance work or safety check of the large-scale consumer's water substation equipment such as buildings, factories, and apartment houses. In the uninterruptible power supply device to be supplied without interruption, the existing circuit breaker 20 mounted inside the cubicle box 10 and the cubicle box 10 are installed near each other, and the switching SWs 40 and 41 are blocked. The circuit breaker 50 which installs the bypass jumper 30 and 31 cable for live line work in a constant power supply is provided, and a bypass circuit is comprised.

Here, the breaker, VCB (Vacuum Circuit Breaker, vacuum breaker) is the primary additional equipment of the power transmission system required when the ultra-high voltage power transmission, it is a device to block the flow of over current.

In this configuration, the temporary jumper bypass jumper 30 and 31 cables are connected to the primary and secondary lines, and the switching SWs 40 and 41 are sequentially introduced, and the voltage, After checking the abnormality of current and power, cut off the regular power supply of the existing circuit breaker 20 and transport it to the side of the replacement circuit breaker 50, and install the bypass jumper 30 and 31 cables for temporary live work again, and transfer SW 60 and 61 are installed in a blocked state, and the live jumper 30 and 31 cables are connected to the primary and secondary lines to the temporary breaker 20, and the switching SW 60 ( 61) sequentially input, and then always supplying power to the existing circuit breaker 20 is installed again, after checking the abnormality of voltage, current, power, replacement circuit breaker 50 and switching SW (40) (41) The circuit breaker, and the replacement circuit breaker 40 (41) for the primary and secondary live work bypass jumper (30) (31) to remove the cable, After installing the circuit breaker 50 in the existing position, the replacement circuit breaker 50 is put in, the temporary circuit breaker 20 is cut off, the switch SW 60 and 61 are cut off, and the bypass jumper 30 for live work (31) By removing the cables 1 and 2, the replacement work by the bypass method is completed.

In the above embodiment, but the replacement of the circuit breaker (VCB) has been illustrated, other electrical installations (eg cubicles, cables, transformers, generators) can be replaced by the configuration and method described above.

4 is a control block diagram illustrating an uninterruptible power supply using a parallel operation technique as another embodiment of the present invention, and further includes a parallel operation transformer 70 installed in parallel behind the breaker 20. By applying parallel operation method when replacing and repairing transformer, work can be performed in uninterrupted state.

At this time, parallel operation condition should be same polarity and rated voltage of 1st and 2nd, same number of turns, same% resistance drop and% reactance drop, same direction of rotation and angular displacement, impedance of each group It is preferable to satisfy conditions such as being inversely proportional to the capacity.

In addition, Figure 5 is a control block diagram showing an uninterruptible power supply using a generator driving method as another embodiment of the present invention, a frequency tuner 80 for supplying a preliminary power to the load behind the transformer 70 and It is further equipped with a self-generated generator 90 to apply the generator operating method when replacing the transformer and various components can be performed in the uninterrupted state.

In the above described and illustrated with respect to the preferred embodiment of the present invention, the present invention is not limited to the above-described embodiment, it is common in the field to which the present invention belongs without departing from the spirit of the present invention claimed in the claims. Various modifications may be made by those skilled in the art, and such modifications are intended to fall within the scope of the appended claims.

As described above, according to the uninterruptible power supply device according to the present invention, the voltage, phase, frequency and load sharing of the constant power supply during the maintenance work or safety check of a large-scale consumer's water substation equipment for large-scale customers such as buildings, factories, and apartment houses. By matching the generator power to the ability to supply power without interruption, there is an effect of preventing the customer's power failure and loss.

Claims (3)

Uninterruptible power supply to ensure constant power supply by matching generator power to constant voltage, phase, frequency, and load sharing capability during renovation or safety inspection of large-capacity water substation facilities for large-scale customers such as buildings, factories, and apartment houses In the apparatus, The existing circuit breaker 20 mounted inside the cubicle box 10, Replacement breaker (50) installed near the cubicle box (10) and installed by installing cables for bypass jumpers (30) and (31) for live work on a regular power source in a state of switching SW (40) (41) for blocking. And an uninterruptible power supply, comprising a bypass circuit. The uninterruptible power supply of claim 1, further comprising a parallel operation transformer (70) installed in parallel behind the circuit breaker (20). 2. The uninterruptible power supply according to claim 1, further comprising a frequency tuner (80) and a self-powered generator (90) for supplying preliminary power to the load behind the transformer (70).