KR200261861Y1 - Pad mounted sub station package - Google Patents

Abstract

The present invention relates to a gas insulated fault zone switchgear package consisting of a fault section automatic switchgear and a power fuse and an arrester constituting the inlet of a special high voltage self-powered faucet facility received from KEPCO, and a special high voltage charger as a completely sealed system. According to the present invention, there is no special high voltage charging part on the outside, and the inlet part of the faucet facility is formed in a completely insulated and sealed type to prevent electric shock accidents caused by the negligence and carelessness of managers or other outsiders, and the resultant power failure and spreading accidents. The installation area and space are greatly reduced, and the appearance is beautiful, and eco-friendly facilities are provided.

Description

Pad integrated water substation facility {PAD MOUNTED SUB STATION PACKAGE}

As illustrated in the connection diagram of FIG. 6, the failure section automatic switchgear, the power fuse, and the lightning arrester constituting the inlet portion 42 of the high-voltage self-powered faucet facility are installed in the equipment when installed in the concrete periphery, angle assembly type, or metal cubicle box. The current was drawn in and drawn out through the installed insulator, and the charging part was completely exposed, so a safety fence installed outside and an entrance door for isolation were needed. In addition, each device needed a separate space, and sufficient space for maintaining safe separation distance was needed, which required excessive installation area and space.

The present invention completely seals the extra-high voltage live-charging part of the conventional faucet facility, installs an arrester together in an automatic switchgear of gas insulation failure section, and installs a power fuse in a mold insulation holder. It is equipped with a disconnector at the front of the arrester so that it can be separated from the live track in the event of a lightning arrester. When replacing the power fuse unit, it is easy to replace the fuse unit by using the fuse holder ring.

Inlet section of breaker section is equipped with bushing for insulated cable elbow connector, and indicator lamp is installed in case of extra high voltage live condition.

1 is a front view of the pad integral type water substation facility

FIG. 2 is a left side view of the extra-high pressure induction plate of FIG.

FIG. 3 is a rear view of the extra-high pressure induction plate of FIG. 1.

Figure 4 is a state diagram of the power-based dry mold transformer installation

5 is a front view of the low voltage switchgear of FIG.

6 is a standard connection diagram of a special high voltage faucet facility

7 is an exemplary view of installing a flame retardant insulation material installed in the water substation equipment of FIG.

8 is an exemplary filter installed at the air inlet of the water substation facility of FIG.

<Description of the reference numerals for the main parts of the drawings>

1. Extra high voltage inlet 2. Power transformer base

3. Low voltage switchboard 4. Automatic switch for gas insulation failure section

5. Mold-type power fuse holder 6. Mold-type transformer

7. Lightning arrester connector 8. Power fuse unit

9. Built-in lightning arrester 10. Transformer for power

11. Low pressure circuit breaker 12. Emergency transfer switch

13. Low Voltage Branch Switch 14. Molded Power Fuse Pullout Ring

15. Power fuse draw-out bushing 16. Gas insulation failure section Automatic switch

17. Transformer drawing-out bushing for mold type instrument 18. Transformer low pressure terminal for instrument

19. Lifting ring 20. Power transformer inlet bushing

21. Transformer bayonet fuse 22. Transformer thermostat cooling fan

23. Temperature remote control transformer 24. Mold transformer special high voltage charging part insulator

25. Molded power fuse 26. Transformer control terminal mold insulator

27. Extra High Voltage Cable Entry Connector 28. Insulation Separator

29. Transformer thermostat cooling fan 30. Transformer remote monitoring temperature sequence

31. Digital power controller 32. Power saving and uninterruptible device

33. Remote monitoring controller 34. Low voltage switchgear observation window

35. Leakage Detector 36. Fault Section Automatic Switch Controller

37. Salvage Ring 38. Salvage Hall

39. Switchboard return fan 40. Switchboard cooling air intake

41. Switchgear Insulation Material 42. Lead-out Configuration on Standard Connection Diagram

43. Emergency transfer and parking short-term control part 44. Display lamp

45. Missing indication lamp 46. Power fuse unit contact terminal

According to the present invention, the main substation equipment main body is equipped with a breakdown section automatic switchgear (4), a power fuse (8), an arrester (9), and a transformer for the instrument (6), and a power transformer (10). ) Is divided into three sides of the transformer panel (2) and the low voltage circuit breaker (11), the emergency switching selector switch (12), the branch switch (13), and the low voltage switchgear (3) provided with peripheral devices. Inside the automatic fault switchgear filled with gas or sulfur hexafluoride insulator, an arrester (9) is also built into the unit, and the fuse fuse unit (8) is installed in the mold type power fuse holder (14). (15) is combined with the failure section automatic switch body. The power fuse unit 8 has a structure in which the arc generated during operation in a hermetic type is completely extinguished inside the fuse unit and does not diverge to the outside, and is composed of a high purity sealant filler and has a double current element having low current and high current failure blocking characteristics. The fuse holder body (5) is an epoxy mold structure having a high-strength mechanical and thermal characteristics and has a breaking capacity of 50 kiloamps or more. The bushing 16 for the cable connecting member installed in the inlet of the fault section automatic switch has a breaking capacity of 10 km or more and is designed to be in close contact with the box to prevent leakage of gas. An automatic locking device is installed to prevent the electromechanical opening and closing operation in a condition that may cause a danger due to internal gas pressure drop, and an indicator that an operator can easily check is installed. In addition, when the gas pressure of the main body is rapidly increased due to internal failure, etc., for the safety of the operator and the general public, an insect repellent device is installed to prevent the destruction of the tank and to prevent the internal device from spreading to the outside. It is supposed to release. Inside the automatic breaker switchgear, an arrester (9) is installed on the secondary side of the switchgear and the grounding wire is drawn out to the outside through the drawing bushing. A disconnector (7) is installed on each side of the arrester so that the arrester itself malfunctions. When generated, it is to be separated from the track and the switch body is completely sealed by TIG welding to prevent the leakage of gas.

The extra high voltage power fuse unit (8) is embedded in a holder formed of an epoxy mold resin insulator, and is completely sealed and is in close proximity, and the fuse unit contact terminal (46) has a breaking capacity of 13 kiloamps or more. It is designed to cut off the fault current safely, and when replacing the fuse, it is possible to release the holder fastening lock (14) and to pull out and replace the fuse unit in the holder. On the secondary side of the fuse holder, a bushing 15 capable of using an insulated cable connecting member is installed, and is connected to the instrument transformer 6 through this. The instrument transformer is a dry mold type, which has a bushing (17) for connecting an insulated cable, is formed of a non-flammable resin having excellent mechanical and thermal durability, and is capable of lifting the upper and lower structures to seal the high and low pressure terminals (18). There is a hook 19 and a hole 38. The power transformer can be installed in two types, an inflow pad type and a mold type. In the case of the inflow pad type, the insulated cable connecting member bushing 20 and the bayonet fuse 21 are provided, and the cooling fan 22 by automatic temperature control is provided. Is installed and the remote monitoring temperature fence 23 is attached. In the mold type power transformer, the extra-high voltage primary side lead wire charging portion is insulated with the mold insulator 24 and connected to the mold type fuse holder 25. The fuse is hermetically installed in the mold fuse holder. The connecting lead wire and the intermediate tap adjusting terminal of each phase are also insulated with a mold resin insulator 26, and a special high voltage insulation cable is connected to the fuse mold holder primary side 27. An insulation separator 28 is installed outside the mold transformer, and an auto cooling fan 29 is installed on the primary and secondary coils to facilitate cooling, and a temperature sensor 30 for remote monitoring is provided. It is installed. Insulation treatment of auxiliary insulation separator, charging lead wire and epoxy fuse holder enables compact package configuration, greatly reducing installation area and space.

The low voltage switchgear is composed of an upper side and a low voltage branch switch (13) equipped with a parking short circuit (11) and an emergency switching switch (12), a video current transformer and other digital power controllers (31). ) Is installed on the lower side. The low-pressure front part is provided with a transparent observation window 34, and the upper part of the package and each side of each junction part are weatherproof and dustproof. The flame-retardant insulation material 41 is installed on the upper and side surfaces of the package, and the air blowers 39 are provided on the upper and lower ends of each package. And a suction port 40 and a dust filter 42 at the suction port. A lifting ring 37 is provided at the upper end of the package, and a lifting hole 38 capable of lifting the forklift is provided at the lower end of the package.

The present invention is a facility that insulates each device of the special high voltage faucet facility shown in Figure 6 as a compact, safe and environmentally friendly facility to prevent electric shock and power failure and greatly increase the power supply reliability.

The above-described invention divides the main body into three sides of the special high-pressure equipment inlet, power transformer panel, and low-voltage switchgear in the self-powered faucet, and fills the gas inside the fault zone automatic section switch to fundamentally prevent accidents caused by the injection of insulating oil. The arrester is built in the fault breaker. The disconnect connector for separating the arrester from the track is installed, and the power fuse unit is connected to the main body by the mold insulation type, and the transformer for the mold type instrument is installed by the coupling bushing on the secondary side of the power fuse holder.

As the charging part is completely sealed from the special high voltage inlet to the power transformer inlet by connecting the insulated cable to the transformer on the secondary side of the transformer for the transformer, it prevents electric shock due to inadvertent contact between the manager and other outsiders. Prevents human and material damage

In addition, by adopting hermetic insulation type, it is possible to miniaturize the equipment by reducing the distance of the charging part of the special high voltage line, so that the installation area and space of the substation facility are greatly reduced and the appearance is beautiful, thereby providing environmentally friendly facilities.

In addition, separate the high voltage equipment entrance board, the power transformer base and the low voltage switchgear can be installed in the proper location, and the three-phase voltage, current, power, power factor, and temperature sensor can be installed in each device for remote monitoring and control on the computer. In addition, by installing constant voltage equipment and power saving equipment in low voltage switchgear, economic and reliable water substation equipment is provided.

Claims (5)

Insulation in automatic failure switchgear uses freon gas or sulfur hexafluoride gas, built-in lightning arrester and disconnect connector, adopts power fuse unit in hermetic type, couples fuse holder to the opening and closing main body by mold type, and converts instrument instrument into mold type power. Multifunctional power switchgear characterized by the inlet part of a fully insulated sealed faucet installation by installing a coupling bushing on the secondary side of the fuse holder and installing an insulated cable connection bushing on the secondary side of the transformer. The switchgear is composed of three sides of a low voltage switchgear and a transformer panel consisting of an automatic high voltage switchgear, a built-in lightning arrester and a power fuse installed in the mold, and a transformer for the instrument, a pad type power transformer, and a mold type power transformer. Multi-functional switchgear, characterized in that the partition and these three sides are configured to be partially separated by an insulated cable. The lead wire and the cutout switch charged using a dry mold transformer based on the power distribution board power transformer are insulated from the charged wire and the terminal by using a sealed fuse, a mold fuse holder and a mold insulation cover, and the transformer body and an external package. A multifunctional switchgear characterized by reducing the separation distance by installing an auxiliary insulation separator in between and installing an auto cooling fan and a duct by a thermostat. A controller capable of observing and controlling the energization state of the high voltage line in the switchgear control panel, a display lamp indicating the energization state of the low voltage bus breaker, a low voltage bus breaker, an indication lamp, an open-circuit relay, a remote monitoring repeater, and a ground fault of each branch line. Multifunctional switchgear which is configured to monitor the operation status directly or remotely by installing alarm display device, automatic constant voltage device, automatic power factor regulator and leakage current meter which operate detector and emergency switch. Flame retardant insulation is installed on the wall and upper and lower sides of the switchgear to protect the equipment from overheating and supercooling. It also installs an air filter on the intake port to prevent the inhalation of contaminated dust and install a vibration-proof rubber plate on the power transformer base. Multi-functional switchgear, characterized in that by installing the packing at each corner to enable waterproof, anti-deer function.