KR20060117553A - A hydroelectricity arrangements of the special hightension - Google Patents

Abstract

A hydro-electricity arrangement of a special high-tension is provided to decrease an installation space by reducing a number of panels and arranging a PT panel and an incoming panel densely. A high voltage apparatus of each panel is installed at one panel as a modulized case. A load breaker switch and an arrestor which are three-stage switches, are installed at an upper part of one panel. A current limitable fuse guaranteeing an insulation by an insulating agent is mounted at a middle of the one panel, and a high voltage transformer and current transformer insulated by the insulating gas are formed at a lower part of the one panel. A disconnector and a ground switch are mounted at the upper part of the one panel together. A breaker module and a current transformer are mounted at the middle of the one panel together, and a bus-bar transformer and a protective fuse are formed at the lower part of one panel together. And, a required number of the modulized load breaker switches linked with the current limitable fuse are stacked at one panel.

Description

A hydroelectricity arrangements of the special hightension

1 is a connection diagram of the existing special high voltage power receiving facility

Figure 2 is a connection diagram of the special high voltage power receiving facility of the present invention

3 is a cross-sectional view of an existing special high-voltage faucet facility

Figure 4 is an external cross-sectional view of the instrument panel of the existing special high voltage power receiving equipment

Figure 5 is a cross-sectional view of the transformer panel of the existing special high voltage power receiving facility

Figure 6 is an overall external sectional view of the special high voltage power receiving facility of the present invention

7 is an external cross-sectional view of the instrument panel of the special high-voltage power receiving facility of the present invention.

8 is a cross-sectional view of a transformer panel of the special high-voltage power receiving facility of the present invention.

 Explanation of symbols on the main parts of the drawings

1 Termination Connector 10 MOF Panel

20: PT panel 20 ': PT module

30: Incoming panel 30 ': Incoming PIT panel

40: Feeder panel 40 ': Load switch panel (LBS)

50: Power transformer panel

11: bushing 12: load switch

12-1: Primary fixed contact 12-2: Secondary fixed contact

12-3: Movable contact 13: Lightning arrester (LA) terminal

14: Conductor between switch and power fuse 15: Power fuse (PF)

16: transformer current transformer for power supply

21: bus transformer (PT) 22: fuse for protecting the bus transformer

31: nirvana bushing 32: current transformer (CT)

33: Breaker (CB) 34: Bushing Coupler

35: breaker mechanism connecting shaft 36: ground bushing

41: connecting conductor between breaker and bushing 41 ': bushing

42: connecting member 43: cable

51: low voltage terminal 52: transformer iron core

53: low pressure coil 54: high pressure coil

55: high voltage terminal 56: termination member

57: transformer connection cable 58: transformer connection busbar

59: Korean wave fuse 59-1: support insulator

59-2: Movable Clamp 59-3: Love Center

59-4: Fixture Clamp

The present invention relates to a special high voltage power receiving facility in which an installation space and installation cost are reduced while the transportation and handling properties are improved in a special high pressure sealed power receiving facility.

In general, high pressure sealed faucets are equipped with load transformers, power fuses, arrestors, and transformer transformers (MOFs) for power supply and supply. . carrying. It is configured for easy installation, and each device is housed in one module so that the accident range is localized to prevent spreading to other parts in case of an accident such as an internal short circuit. Explosion-proof device is configured to protect the operator and protect the operator from the arc, so that the arc can be safely guided through the arc passage in the event of an accident, the distance between the devices is reduced by direct connection between the devices, and the device is placed vertically. The installation area is minimized through the installation, and the faucet facility is used as long as all the conductors are removed from the high voltage part to secure safety from the risk of electric shock and the internal short circuit accident is removed in advance.

In other words, in order to receive special high voltages such as factories, buildings, and apartment complexes, a water and substation facility including transformers, switch devices, and other safety devices will be provided to drop the voltage to an appropriate low voltage commercial voltage. In the case of placing high voltage switch devices and related instruments around a large transformer to meet the capacity set by the unit of power consumer, they have been arranged by installing frames, and also in consideration of safety such as electric shock. Since the separation distance between the devices has been maintained within the substation, a large installation area is required to install the water and substation facilities, and the increase in size and weight of the water and substation facilities leads to an increase in the facility period and the extension period. In order to minimize the size of water and substation equipment, the installation cost of the equipment is increased. Although the use of gas-insulated equipment that can be used generally, which was demanding an expensive price competition is increasingly intensified.

Conventionally, the 22.9kV power supplied from the substation is supplied to the power receiving facilities of each consumer through a distribution system consisting of processing and underground distribution lines. In the power receiving facilities, the 22.9kV power supplied from the substation is connected through the inlet as shown in FIG. 1), go through the MOF panel (10) equipped with a protective device and a measuring device, go through the PT panel (20) and then through the INCOMING panel (30) to the required load It is supplied to each load from the power transformer panel 50 through the feeder panel 40 of the feeder. In this case, it is a type using a panel as a general special high voltage power receiving facility, and receives power from the distribution line through the inlet of the ship. It consists of various equipments installed to protect the load end line to the branch point to send to the load.

The component is composed of a section or a load switch 12 at the front end of the line to separate the line from the accident and prevent the accident from spreading, and is installed to protect the line in case of abnormal voltage (LA). (13) and a power fuse 15 to protect the equipment of the latter stage when the overcurrent is energized, and is connected to a transformer current transformer (WHM) for measuring the amount of power connected to the transformer current transformer 16 for power supply and supply instrument, In order to reduce the voltage to the voltage required by the user in the transformer transformer current transformer (MOF) for the power supply and supply, it is connected to a bus transformer (PT) 21, the power supply for protecting the bus transformer transformer on the primary side of the bus transformer (PT). 22 is configured.

The current transformer 32 (CT) is configured between the transformer transformer current transformer (MOF) and the parking circuit breaker 33 connected to the instrument, and the breaker / ground breaker (DS / ES) 12 passes through the parking circuit breaker 33. It is connected to each load through the transformer 50 in each panel after passing through as many disconnectors / grounding switches as necessary in the same configuration where each load is required.

This conventional method is connected to the primary side of the load switch 12 is connected to the power input through the cable as shown in Figure 4, the load switch 12 is a primary fixed contact ( 12-1), the circuit is closed and the circuit is opened while rotating in the opposite direction, and the secondary side is connected to the power fuse 15 through the conductor 14 between the switch and the power fuse, and the power fuse 15 is negative. It acts to prevent the accident spread to the front when an accident at the bottom, it is installed so that it can be easily replaced if the fuse is blown by the accident current, and the arrester (LA) 13 is installed in the switch secondary side in parallel to the abnormal voltage When generated, it is connected to the ground through the arrester.

And the second side of the power fuse (15) is connected to the transformer current transformer (16) for power supply at the bottom, and serves to measure the amount of power here through the bushing coupler (34) and the PT panel (20) It is connected in parallel with the incoming panel 30, which supplies power from the PTI panel 20, and is connected to the bus transformer 21 through the bus transformer protection fuse 22, which is intended to be used in the transformer 21. Use by dropping to voltage.

In addition, the main power connected to the incoming panel 30 through the bushing is connected to the main circuit breaker through the CT (32), which serves to protect the line by blocking when an accident or opening and closing of the entire load, and PTI The switch installed in the lower part of the panel 20 and the upper part of the upper part of the circuit breaker (secondary) and the upper part of the feeder panel 40 is installed so that the circuit breaker is fixedly installed so that it can be safely operated as an opening and closing device for repair or repair. Use

In addition, the feeder panel 40 may vary in quantity depending on the load used, and may also vary in size depending on the capacity of the transformer panel 50 for receiving, and the connection material at the secondary side of the circuit breaker of the feeder panel 40. (42) is connected to the high voltage side terminal (55) of the power transformer using a cable or a booth duct, which changes the voltage by the ratio of the high voltage coil (54) and the low pressure coil (53) to connect the secondary low voltage terminal (51). It is connected to the low pressure side.

 Such existing methods generally require products that are easy to transport and install because power devices are widely used in general buildings, but they are difficult to meet, and more preferable to reduce the cost of installation area. However, there was a limit to reducing the installation area.

The present invention utilizes unnecessary space by configuring the PT panel separately in the existing high voltage faucet facility at the front of the INCOMING panel, and the circuit breaker of the FEEDER panel is applied to the capacity of the transformer. It can be applied according to the protection of commonly used transformers by constructing current-limit fuse (PF) and load switch, so that double current-type fuses are configured in the transformer transformer panel, and only the load switch of the front end is configured as a separate panel. Minimizing space and installation costs and improving transport and handling.

The present invention is installed in a special high-voltage faucet facility by installing a high-voltage device of each panel in a case of a modular case in one panel, the load switch (or automatic) is a three-stage switch reduced insulated by insulating gas on the top of one panel Section fault switchgear) and arrester are installed in the middle of the fuse which is insulated with insulation, and the fuse is installed with the Korean-type fuse, and the lower part is made of high-voltage transformer current transformer which is insulated with insulation gas and reduced in size. At the top of the two panels, a disconnector / grounding switch (or ground load switch) is installed in the middle, and a breaker module is installed with the current transformer, and a bus transformer is configured with a protective fuse at the bottom, and one panel can be connected with a current-limiting fuse. Load switchgear configured as a module to be stacked as necessary to have a structure The lure is.

As shown in FIG. 2, the connection diagram of the present invention is connected to the connection diagram shown in FIG. 1, which means that there is no circuit change of the power receiving facility, but the power receiving facility is changed by changing the use and installation of the Korean wave fuse. To reduce the installation area.

That is, in the present invention, the load switch 12 is configured at the front end of the line to prevent the accident from spreading by dividing the line from the accident as shown in FIG. ), And connected to a power fuse 15 to protect the equipment of the rear end when the overcurrent is energized, and is connected to a transformer current transformer 16 for measuring the power supply and leads to an integrated power meter (WHM) for measuring the amount of power.

In the transformer transformer current transformer (MOF) for power supply to the user to drop to the required voltage to the transformer transformer (PT) 21, the power fuse for protecting the transformer on the primary side of the transformer transformer (PT) 22 is configured.

A current transformer 32 (CT) is formed between the parking transformer 33 connected to the transformer current transformer for the instrument, and the load breaker (or disconnector / ground breaker (DS / ES)) 12 passes through the parking breaker 33. Each load is connected to each load through the power transformer configured in the transformer panel through the number of disconnectors / grounding switch as needed and the power transformer configured in the transformer panel.

According to the present invention, the 22.9 kV power supplied from the substation enters the termination member 1 through the inlet, and passes through a MOF panel 10 having a protection device and a measurement device. The power is supplied to the transformer transformer panel 50 through the load switching unit (LBS) panel 40 'as much as necessary through the incoming panel (30') to the INCOMING PTI panel (30 ').

In the present invention, the power drawn through the cable is connected to the primary side of the load switch 12, the load switch is the primary fixed contact (12-) connected to the primary side while the movable contact (12-3) is rotated The circuit is closed while being put in 1), and the circuit is opened while rotating in the opposite direction.

The secondary side is connected to the power fuse 15 through the conductor 14 between the switch and the power fuse, the power fuse 15 serves to prevent the accident spread to the front end in the event of an accident of the load end, the fuse by the accident current If it is melted, it is installed for easy replacement.

In addition, the arrester LA is installed in parallel to the secondary side of the switch, and when an abnormal voltage occurs, the arrester LA is connected to the ground through the arrester.

On the secondary side of the power fuse 15, the power transformer 15 is connected to a transformer transformer 16 for power supply at the bottom, which serves to measure the amount of power, and is connected to the PTI panel through the bushing coupler 34. ) Is connected in parallel with the incoming panel 30, and the power is supplied from the PTI panel 20, and is connected to the main transformer 21 through the transformer protection fuse 22. Use it after dropping to the voltage to use.

In addition, the main power connected to the incoming panel 30 through the bushing is connected to the main breaker through the CT (32), which serves to protect the line by blocking the parking short-circuit during an accident or opening and closing of the entire load. The PIT panel 20 and the incoming panel 30 described above are composed of one panel, which is an incoming PIT panel 30 '.

In addition, the lower part of the pit panel 20, the upper end of the circuit breaker (secondary), the switchgear installed in the upper part of the feeder panel 40, the circuit breaker is installed in a fixed type so that it can work safely as an opening and closing device for repair or repair, mainly the disconnector Use and ground switch.

The load switch panel 40 'may vary in number depending on the load used, and the size may vary depending on the capacity of the power transformer panel 50.

On the secondary side of the load breaker panel 40 ', it is connected to the high voltage side terminal 55 of the power transformer using a cable or a bus duct through a connecting member 42, which is a high voltage winding 54 and a low voltage winding. The voltage is changed at a ratio 53, and the changed voltage is connected to the low voltage side through the secondary low voltage terminal 51.

The present invention relates to a special high-voltage power receiving facility, to apply a power fuse in place of the circuit breaker used to protect the line from the load-end accident, and to configure the interlocking load switch to the current-flow fuse, while reducing the number of panels By placing the PT and Incoming panels densely, the installation area can be reduced by about 1/2 compared to the existing products, and it is easy to handle and transport, and the manufacturing cost is drastically reduced.

In particular, it is possible to supply products that are easy to transport and install in accordance with the trend of being widely used in general buildings due to miniaturized and advanced power equipment, and to supply more reduced products to reduce the cost of installation area, and to load large loads. Power fuses can be applied at heavy or light loads to protect the system more advantageously.

Claims (4)

In the special high voltage faucet facility, Install the high pressure device of each panel in a modular case in one panel; At the top of one panel, a load switch and lightning arrester, which is a three-stage switch insulated with insulating gas, is installed in the middle, and a current-type fuse with insulation is installed in the middle. ; At the top of one panel, the disconnector / grounding switch is installed in the middle, the breaker module is installed with the current transformer, and at the bottom, the bus transformer is installed with the protective fuse; One panel is a special high-voltage faucet facility, characterized in that the load switchgear that can be interlocked with the current-flow fuse as a module to be stacked as necessary. The special high voltage power receiving facility according to claim 1, wherein each device in the entire panel is installed in a modular form. The special high voltage power receiving facility according to claim 1, wherein a plurality of modular devices are installed in one panel. The special high voltage power receiving facility according to claim 1, wherein the current-type fuse installed in the power transformer panel and the load switch of the load switch panel are mechanically and electrically interlocked.

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