KR200238278Y1 - Nothing power failure connection panel - Google Patents

Abstract

The present invention relates to a plurality of low voltage inlet terminals (1,1 ', 1' ', 1' '') installed in a longitudinal direction on a rectangular connecting panel (5) in an uninterruptible connection panel of a underground cable transformer. Load transfer switch (NFB) (2) connecting the low pressure inlet terminals (1, 1 ', 1' ', 1' '') and a plurality of branches withdrawn from the load transfer switch (NFB) (2) A plurality of customer inlet connection terminals (3,3 ', 3' ', 3' '') installed in the longitudinal direction to be connected to the terminals, and the respective customer inlet connection terminals (3,3 ', 3' ', 3); And a plurality of uninterruptible transformer vehicle connecting terminals (4,4 ', 4' ', 4' '') installed to be connected to the terminal withdrawn from the '' ') and the uninterruptible transformer vehicle. It relates to an uninterruptible connection panel.

Description

Uninterruptible connection panel of underground transformer {Nothing power failure connection panel}

The present invention relates to an uninterruptible connection panel of underground transformers. In detail, the uninterruptible power supply of underground transformers can be operated without a power failure when the transformer is overloaded, a defective device is replaced, and a replacement for a certain period of time is performed. It relates to the connection panel.

Increasing demand for electricity due to industrial development and the underground ratio of distribution lines are gradually increasing. The overhead distribution lines are uninterrupted to solve many inconveniences of electric users. In situations where transformers are frequently replaced due to surges and breakdowns, electrical users are forced to bear losses due to inconvenience and power failure.

Underground supply zones are load-intensive regions, and most of them are supplied to important consumers, causing significant disruptions in the use of power-operated equipment in the event of a power outage, which is a major cause of deepening consumer complaints and declining supply reliability. In some cases, the loss or damage of various electrical equipment occurs, the demand for damage compensation is increasing.

In addition, the ground transformer is required to be replaced by overload, replacement of defective equipment, replacement for a certain period of time, etc. The current operation transformer and the uninterruptible transformer are essential for uninterruptible operation because the switch is not built in the transformer after the power is cut off and the power failure is performed. The high voltage loop operation between them is not possible.

In addition, the uninterruptible load switching of the transformer should be operated in such a way that the low voltage cables can be separated at the same time for each phase, but the low voltage cable cannot be separated at the same time for each phase. In case of separation, there is a risk of short circuit failure between phases.

Registered Utility Model Registration No. 176382 is a body type connection that connects four circuit switch elbows and bypass cables for each circuit to one circuit breaker. It relates to the multi-circuit switch which integrated three functions into one ground multi-circuit switch,

The Korean Utility Model Registration No. 217133 is equipped with a plurality of elbow switch between the high pressure elbow inside the ground transformer, and the secondary low pressure bushing terminal of the ground transformer is composed of a removable bushing terminal, and the ground of the ground transformer It relates to an uninterruptible replacement ground transformer, which is configured to be detachable from the front side and a protective cover is installed on the bushing terminal to prevent phase mixing when the low voltage terminal is separated from the bushing.

Although the above designs are used for uninterrupted work, they are used only for transformer replacement work on the overhead line, and there are many problems when replacing the underground line transformer.

In order to solve the above problems, the present invention is to install a connection panel on one side of the conventional underground line transformer to be able to replace the transformer uninterrupted by using an uninterruptible transformer vehicle,

Install a low pressure inlet terminal on the panel so as to be connected to the terminal drawn out from the low voltage part of the normal transformer, and install a load transfer switch (NFB) connecting the low pressure inlet terminal, the load transfer switch (NFB) A customer lead-in connection terminal connecting the terminal drawn out from the customer and the receiving terminal of the electric user, and the customer in-line connection terminal are provided with an uninterruptible transformer train connection terminal to be connected to a normal uninterruptible transformer vehicle during an uninterruptible operation. It is a technical task of the present invention to provide a connection panel.

1 is a detailed view of a conventional transformer

2 is a block diagram of a conventional transformer

Figure 3 is a connection panel installation of the subject innovation

4 is a block diagram of the present invention

<Description of the Drawings>

Low Pressure Inlet Terminals (1,1 ', 1' ', 1' ''), Load Transfer Switch (NFB) (2), Customer Inlet Connection Terminals (3,3 ', 3' ', 3' ''), Uninterruptible transformer vehicle connection terminals (4,4 ', 4' ', 4' ''), connecting panel (5), extra high pressure section (10), extra high voltage ground conductors (H1A, H2A, H3A), extra high voltage Terminals (H1B, H2B, H3B), low voltage section 20, low voltage section lead-out terminals (X0, X1, X2, X3)

In order to achieve the above object, the present invention provides a plurality of low pressure inlet terminals (1,1 ', 1' ', 1' '') installed in the longitudinal direction on a rectangular connecting panel (5), and the respective low pressures. Load transfer switch (NFB) (2) connecting the female input terminals (1,1 ', 1' ', 1' ''), and a plurality of branch terminals withdrawn from the load transfer switch (NFB) (2) A plurality of customer inlet connection terminals (3,3 ', 3' ', 3' '') installed in the longitudinal direction so as to be connected to each other; and each of the customer inlet connection terminals (3,3 ', 3' ', 3'). Uninterruptible transformers for underground cables, comprising a plurality of uninterruptible transformer vehicle connecting terminals (4,4 ', 4' ', 4' '') installed to be connected to the terminal drawn out from the '') and the uninterruptible transformer vehicle. It relates to the connection panel.

Hereinafter, described in detail with reference to the accompanying drawings.

1 is a detailed view of a conventional transformer, FIG. 2 is a diagram illustrating an internal configuration of a conventional transformer, FIG. 3 is a diagram illustrating a connection panel installation of the present invention, and FIG. 4 is a diagram illustrating a connection panel configuration of the present invention. Are the low pressure inlet terminals (1,1 ', 1' ', 1' ''), load transfer switch (NFB) (2), and customer inlet connection terminals (3,3 ', 3' ', 3' ''). Uninterruptible transformer vehicle connection terminals (4,4 ', 4' ', 4' ''), connecting panel (5), extra high pressure section (10), extra high voltage ground conductor (H1A, H2A, H3A), extra high voltage It can be seen that the drawing terminals H1B, H2B, and H3B, the low pressure part 20, and the low pressure part drawing terminals X0, X1, X2, and X3.

As a connection panel installed on one side of a conventional underground line transformer, the transformer can be replaced by an uninterruptible transformer using an uninterruptible transformer vehicle.

Figure 1 shows a detailed view of a conventional transformer, Figure 2 is a conventional internal configuration of the transformer, when looking at the inside of a conventional underground line transformer, the extra-high voltage section 10, one side of the extra-high pressure incoming line (H1A, H2A, H3A) is installed, and is connected to the extra-high pressure conductors (H1A, H2A, H3A), and the extra-high pressure conductors (H1B, H2B, H3B) are formed symmetrically, and the low-pressure part (20) is formed. It can be seen that the low pressure part lead terminals X0, X1, X2, and X3 are formed.

3 is a connection panel installation diagram of the present invention, it can be seen that the structure of the connection panel 5 of the present invention in a forward direction on one side of a conventional transformer consisting of a special high pressure unit 10 and a low pressure unit 20. ,

Figure 4 is a detailed view of the connection panel of the present invention, which is installed on one side of the transformer, so as to be connected to each of the low-pressure unit withdrawal terminals (X0, X1, X2, X3) drawn out from the low-pressure unit 20 Connecting the plurality of low pressure inlet terminals 1,1 ', 1' ', 1' '' and the respective low pressure inlet terminals 1,1 ', 1' ', 1' ''. A plurality of customer inlet connection terminals installed in the longitudinal direction to connect the load transfer switch (NFB) 2 and the branch terminal withdrawn from the load transfer switch (NFB) (2) and the receiving terminal of the electric user ( 3,3 ', 3' ', 3' ''), and each of the customer inlet connection terminals (3,3 ', 3' ', 3' '') can be connected to a normal uninterruptible transformer vehicle during an uninterruptible operation. It can be seen that the structure consists of a plurality of uninterruptible transformer vehicle connection terminals (4,4 ', 4' ', 4' '').

The construction method of replacing the transformer by using the connection panel of the present invention is to perform uninterrupted work to replace the existing underground line transformer or to reduce the inconvenience of consumers due to power failure during repair. After connecting the uninterruptible transformer vehicle connection terminals (4,4 ', 4' ', 4' '') to the customer and the power supply, and then disconnecting the load transfer switch (NFB) (2), the low voltage unit 20 The transformer connected to the low pressure lead-out terminals (X0, X1, X2, X3) and the low pressure lead-in terminals (1,1 ', 1' ', 1' '') of the Connect the low pressure part lead-out terminals (X0, X1, X2, X3) of the low pressure part 20 and the respective low pressure part inlet terminals (1, 1 ', 1' ', 1' ''), and the uninterruptible transformer vehicle and the uninterruptible transformer. The construction is completed by disassembling and disassembling the connection line connected to the vehicle connection terminals (4, 4 ', 4``, 4' '').

The connection panel 5 of the present invention is fixed to one side of the existing transformer, there is no need to install every time replacement and repair work, it is possible to reduce the labor and construction materials costs,

Transformer failure occurs frequently due to the overload that may occur during overload and short-circuit because there is no secondary protection device of the transformer, but by installing the load transfer switch (NFB) (2), the stability of the transformer is prevented by preventing the overload in advance. To increase.

In addition, the capacity of the load transfer switch (NFB) (2) and the customer incoming connection terminal (3, 3 ', 3 ``, 3' '') can be installed in accordance with the capacity of the transformer and the customer in the area. It is.

As described above, the uninterruptible connection panel of the present invention does not have a power failure by using an uninterruptible transformer train when replacing transformers, and in case of a power failure due to an accident, it can shorten the outage time due to the entire incoming line, and can prevent incorrect wiring work. In addition, it is possible to prevent the transformer burnout caused by the overload by the secondary side overload protection device, and to reduce the bulky volume due to the transformer low-pressure part to reduce the material cost.

Claims (1)

In the uninterruptible connection panel of the underground line transformer, a plurality of low-voltage inlet terminals (1,1 ', 1' ', 1' '') installed in the longitudinal direction on the rectangular connecting panel (5) and the respective low-voltage inlet terminals A load transfer switch (NFB) (2) connecting (1,1 ', 1' ', 1' '') and a plurality of branch terminals withdrawn from the load transfer switch (NFB) (2). A plurality of customer inlet connection terminals (3,3 ', 3' ', 3' '') installed in the longitudinal direction, and the respective customer inlet connection terminals (3,3 ', 3' ', 3' '' Uninterruptible connection panel of underground transformer, comprising a plurality of uninterruptible transformer vehicle connection terminals (4,4 ', 4' ', 4' '') installed to connect with the terminal and the uninterrupted transformer vehicle. .