KR20100079902A - Solid insulated switchgear - Google Patents

Abstract

PURPOSE: A solid-insulated-switchgear is provided to reduce the total volume of the switchgear since maintenance with respect to the gas pressure of an insulating gas in the switchgear for inspecting, and the gas pressure are not required. CONSTITUTION: An incoming panel(10) includes a solid-insulated-disconnecting switch, a solid-insulated-grounding switch, and a solid-insulated-breaker. The incoming panel is connected with a wiring for supplying power. A potential voltage-current transforming panel(20) is electrically connected with the incoming panel. The potential voltage-current transforming panel includes a current transformer and a voltage transformer. A relay and measuring panel(30) is electrically connected with the potential voltage-current transforming panel. A feeding panel includes the solid-insulated-disconnecting switch, the solid-insulated-grounding switch, and the solid-insulated-breaker.

Description

Solid Insulated Switchgear {SOLID INSULATED SWITCHGEAR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to solid isulated switchgears, and more particularly to ultra-high pressure solid state insulated switchgear capable of withdrawing top or bottom.

The present invention relates to a switchgear for use in the field of receiving and distributing ultra high voltage electric power of 25.8 kilo volts (KV) in large-scale civilian power demand.

As such an ultra high voltage switchgear, SF6 (sulfur hexafluoride) gas insulated switchgear has conventionally been used. However, there is a problem that SF6 (sulfur hexafluoride) gas is regulated in each country as one of the global warming gases, which is enclosed in the enclosure of the switchgear to quickly extinguish arcs generated during disconnection and breaking of ultra high voltage lines. . Therefore, without using SF6 (sulfur hexafluoride) gas as the insulating gas, it is necessary to replace other gas such as nitrogen gas or to find another insulating method.

In addition, civilian high voltage switchgear for switchgear needs to be designed to be suitable for various usage environments. Representatively, power cables (cables) that supply power to faucets and distributions must be drawn in and drawn out or drawn out and drawn out. There is a need for an ultra high voltage switchgear suitable for the environment.

Accordingly, the present invention is to solve the problems and problems of the prior art as described above, one object of the present invention, the solid state insulated distribution panel, instrument transformer current transformer (METERING OUT FIT, abbreviated MOF) panel, relay and To provide a solid insulated switchgear with a measuring panel.

A further object of the present invention is a solid insulated switchgear with a solid insulated water distribution panel, over which the power cable can be pulled in and out, and a METERING OUT FIT panel, relay and measurement panel. To provide.

Another object of the invention is a solid insulated switchgear with a solid insulated water distribution panel, from which the power cable can be pulled in and out, and a METERING OUT FIT panel, relay and measurement panel. To provide the gear.

One object of the present invention, the solid-state insulating disconnector, the solid-state insulating grounding switch and the solid-state insulation breaker, the power supply panel for supplying the incoming power and the power receiving panel (INCOMING PANNEL) connected;

An electrical transformer connected to the power receiving panel and provided with an instrument current transformer and an instrument transformer to convert the current and voltage of the received electric power into a level for metering of the electricity meter (METERING OUT FIT, abbreviated as MOF) ) panel;

A relay and measurement panel electrically connected to said transformer transformer current transformer panel and having a phase transformer transformer; And

It can be achieved by providing a solid insulated switchgear according to the invention, comprising a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, and comprising a distribution panel connected for power distribution and a wire for supplying power. have.

Another object of the present invention, the solid-state insulating circuit breaker, the solid-state insulating grounding switch and the solid-state insulating circuit breaker, the power receiving panel (INCOMING PANNEL) connected in the vertical direction for the electric wire and the power supply received from the top;

An electrical transformer connected to the power receiving panel and provided with an instrument current transformer and an instrument transformer to convert the current and voltage of the received electric power into a level for metering of the electricity meter (METERING OUT FIT, abbreviated as MOF) ) panel;

A relay and measurement panel electrically connected to said transformer transformer current transformer panel and having a phase transformer transformer; And

A solid insulated switch according to the present invention, comprising a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, including a wire that is drawn upward to supply power and a distribution panel connected in a vertical direction for distribution. By providing a gear.

Another object of the present invention, the solid-state insulating breaker, the solid-state insulating grounding switch and the solid-state insulating breaker, the power receiving panel (INCOMING PANNEL) connected in a vertical direction for the electric wire and the power supply is supplied from the bottom;

An electrical transformer connected to the power receiving panel and provided with an instrument current transformer and an instrument transformer to convert the current and voltage of the received electric power into a level for metering of the electricity meter (METERING OUT FIT, abbreviated as MOF) ) panel;

A relay and measurement panel electrically connected to said transformer transformer current transformer panel and having a phase transformer transformer; And

A solid insulated switch according to the present invention, comprising a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, including a wire that is drawn out to supply power and a distribution panel connected in a vertical direction for distribution. By providing a gear.

Switchgear according to the present invention is a switchgear for civil insulation ultra-high pressure solid-insulated switchgear, because it uses solid insulation without the use of insulating gas, and maintenance is not necessary to periodically check and supplement the gas pressure of the insulating gas in the switchgear. Since the gas pressure is unnecessary, the total volume of the switchgear can be reduced, and since the use of SF6 gas, which is regulated internationally, can be used, it can provide a switchgear that is eco-friendly and satisfies the eco-friendly requirements of various countries internationally. The effect can be obtained.

The switchgear according to the present invention has an effect of obtaining a solid insulated switchgear suitable for an installation environment of a switchgear in which a power cable for receiving power is drawn from the top and a power cable for power distribution is drawn out.

The switchgear according to the present invention has an effect of obtaining a solid insulated switchgear suitable for an installation environment of a switchgear in which a power cable for receiving power is drawn in from the bottom and a power cable for delivering power is drawn out in the bottom.

The purpose and structure and effect of the present invention to achieve the above will be more clearly understood by the following description of the preferred embodiment of the present invention with reference to the accompanying drawings.

The solid insulated switchgear according to the present invention includes a solid insulated switchgear having a top pull-out structure as shown in FIGS. 1 to 6 and 11 and a bottom pull-out structure as shown in FIGS. 7 to 10 and 12. It may be configured as a solid insulated switchgear.

As shown in FIGS. 1 to 12, the solid insulated switchgear of the upper lead-out and lower lead-out structures according to the present invention includes an INCOMING PANNEL 10 or 110 and a metering current transformer. , MOF panel 20 or 120, relay and measurement panel (aka METERING PANNEL) 30 or 130, and power distribution panel (FEEDER PANNEL) 40 or 140.

The power receiving panel (INCOMING PANNEL) 10 or 110 may be a solid insulated disconnector (symbol DS in FIGS. 1 and 7, symbol 1, and FIG. 3) as shown in FIGS. 1, 3, 7, and 9. 9, reference numeral 111, a solid insulated earth circuit breaker (reference numeral ES in FIGS. 1 and 7, reference numeral 2 in FIG. 3 and reference numeral 112 in FIG. 9), a solid insulation circuit breaker (reference numeral CB in FIGS. 1 and 7, 3, 4, and 113, 115 of FIG. 9), and is connected to the electric wire C1 for supplying incoming electric power for power reception. 1 and 7, the power receiving panel 10 or 110 is installed around the phase intermediate transmission cable C2 electrically connected to the transformer transformer current transformer panel 20 or 120. It may further include a current transformer (see reference CT of FIGS. 1 and 7) for detecting the. The power receiving panel 10 or 110 further includes an arrester (see reference numeral LA in FIGS. 1 and 7, reference numeral 116 in FIG. 9) provided for each phase to ground a lightning strike. The solid insulated disconnectors (see FIG. 1 and FIG. 7, reference numeral 1 in FIG. 3 and reference numeral 111 in FIG. 9) and the solid insulated ground breaker (symbols ES in FIGS. 1 and 7, symbols 2 and 9 in FIG. 3). Solid state breaker (see CB in FIGS. 1 and 7, 3, 4 in FIG. 3 and 113, 115 in FIG. 9) and current transformer (see CT in FIGS. 1 and 7); and Three lightning arresters (reference numeral LA of FIGS. 1 and 7, reference numeral 116 of FIG. 3, and reference numeral 116 of FIG. 9) are provided so as to correspond to respective phases of three-phase alternating current.

Referring to FIG. 4, the METERING OUT FIT (MOF) panel 20 for the instrument may include a power receiving panel (10 in FIGS. 1, 2 and 3, or 110 in FIG. 7 or 8). Level for metering electricity meters, noting the current and voltage of the received power, with electrical current and voltage transformers as well known internally. Provided by converting. The transformer transformer current transformer panel 20 steps down the ultra-high voltage of the received power, for example, from tens to hundreds of kilovolts to 220 volts, which can be measured by a general electricity meter. It provides a detection current signal proportional to the current of the received power, and through the instrument transformer provides a detection voltage signal proportional to the voltage of the received power.

As can be seen in FIGS. 1 and 5, the relay and measurement panel 30 is electrically connected to the transformer current transformer panel 20 for instrumentation and is a phase shifter (PTT of FIG. 1 and FIG. 5). Reference numeral 36). 1 and 5, the relay and measurement panel 30 further includes a solid insulated disconnecting device 32 and a solid insulated grounding breaker 31.

The power distribution panel 40 or 140 is connected to the electric power supplying wire and for power distribution, and has a solid insulated disconnector (see DS in FIGS. 1 and 7, 42 in FIG. 6 and 141 in FIG. 10) and a solid insulated ground. See switchgear (ES in FIGS. 1 and 7, 43 in FIG. 6, 142 in FIG. 10) and solid-state insulated breakers (CB in FIGS. 1 and 7, 46 in FIG. 6, and 145 in FIG. 10). ). The power distribution panel 40 or 140 further includes a lightning arrester (see SA of FIGS. 1 and 7, 47 of FIG. 6, and 146 of FIG. 10) provided for each phase to ground a lightning strike.

On the other hand, the configuration and operation of the top pull-out type solid-insulated switchgear of the solid-insulated switchgear according to the present invention will be described with reference to FIGS.

As shown in Fig. 1 and Fig. 2, the top draw-out type solid-insulated switchgear 100 according to the present invention includes a power receiving panel 10, a transformer current transformer panel 20 for instrumentation, and a relay and measurement panel 30. ) And a power distribution panel 40.

As described with reference to FIG. 3, the power receiving panel 10 includes a solid insulated disconnecting device 1, a solid insulated grounding breaker 2, and a solid insulated breaker 4. And the power receiving cable C1 is connected in the vertical direction for power reception. Here, the solid-state insulating disconnector (1) is not shown inside, but the electrical contact is brought into contact with the fixed contactor by a fixed contact connected to the power supply side, the insulated shaft rotated by the drive unit including the motor and the reducer, the screw formed on the insulated shaft And a movable contactor which is movable to a disconnected position separated from the fixed contactor, and the outer part is cast enclosing with a solid insulating material such as epoxy and electrically solid insulated from the outside. . For a more detailed description of the configuration and operation can refer to the Republic of Korea Patent Registration No. 10-0753561 filed on May 11, 2006, the applicant of the present invention. Although the solid insulated grounding switch 2 is not shown inside, the fixed contactor connected to the ground (ground), the insulated shaft rotated by a drive unit including a motor and a reducer, the screw portion formed on the insulated shaft to the fixed contactor It is composed of a contacting ground position and a movable contactor which is movable to an energized position separated from the fixed contactor, and the outside is electrically insulated from the outside by casting enclosing with a solid insulating material such as epoxy Has a configuration. For a more detailed description of this configuration and operation can be referred to the Patent Registration No. 10-0753561. The power receiving panel 10 includes an actuator 3 for driving contact opening and closing of the solid state insulating circuit breaker 4 as can be referred to FIG. 3, and the actuator 3 preferably uses an electromagnetic force of a coil. It can be composed of a permanent magnet actuator that provides linear power. The solid insulation breaker (4) may be composed of a vacuum interrupter (vacuum interruper) that is externally cast enclosed by an electrical solid insulation material such as epoxy, the operation inside the vacuum vessel of the vacuum interrupter constituting the solid insulation breaker (4) A power transfer lever for linearly driving a contact to the open / closed position is connected between the actuator 3 and the solid state insulation circuit breaker 4, and the power transfer lever is also cast-out enclosed by an electrical solid insulation material to solid-state insulation. Has a configuration. More detailed configuration and operation of the actuator (3) and the solid-state insulation circuit breaker (4) is a Korean Patent Registration No. 10-0789447 filed by the inventor of the present invention and filed and filed December 29, 2006 by the applicant of the present invention Reference may be made. The power receiving panel 10 includes a cable junction box 8 for receiving power through the power receiving cable C1. The cable junction box (8) is composed of a housing having a conductor portion for electrical conduction inside and the outside of which is wrapped in a solid insulating material, wherein the conductor portion is a horizontal conductor portion electrically horizontally connected to the fixed contact side of the solid insulation disconnector (1). And a vertical conductor part vertically connected to the power receiving cable C1. The vertical conductor portion and the horizontal conductor portion may be provided in the form of a socket and a plug for secure connection. The interior of the cable connection box 8 can refer to the configuration of the disconnector base portion of the registration publication of the Republic of Korea Patent Registration No. 10-0753561 and will be omitted. In FIG. 3, the power receiving panel 10 according to the present invention is connected between the lightning arrester 7 for grounding a lightning strike, and the power receiving panel 10 and the transformer transformer current transformer panel 20 for power supply (transmission). An intermediate transmission cable C2 to be carried out, a cable connector 8 'for connecting the intermediate transmission cable C2, and an arrester junction box 9 for connecting the arrester 7; . Here, the cable connector 8 'has the same configuration as the cable junction box 8, except that the cable connector 8 is connected upwardly for connection with the power receiving cable C1 to which the cable junction box 8 is connected. While the cable junction box 8 'has a posture connected toward, the cable junction box 8' has a difference in a posture connected downward to connect the intermediate transfer cable C2 connected from below. The lightning arrester junction box 9 also has a vertical conductor portion and a horizontal conductor portion inside, similarly to the cable junction box 8, and has a structure surrounded by a solid insulating material, and grounded to the ground. On the other hand, reference numeral 5 is a frame enclosure (frame enclosure) for receiving and supporting the components in the interior of the power receiving panel 10 described above.

In the power receiving panel 10 configured as described above, the electric current drawn from the top through the power receiving cable C1 is fixed and movable inside of the solid insulated disconnecting device 1 in the energized position with the conductor portion in the cable junction box 8. Internal conductor of the cable junction 8 'via the solid insulation breaker 4, which is also the energized position, via the fixed and movable contact and the conductor portion of the solid insulated earthing switch 2, which are in the energized position, through the contact and the conductor portion. It flows out through the negative and intermediate transmission cable (C2). In this case, when the solid insulated disconnector 1 is in the disconnected position, the internal fixed and movable contacts are separated, so that the current is interrupted from the solid insulated disconnector 1 and the flow of the current is disconnected to the solid insulated grounding switch 2 in the rear stage. . In addition, when the solid insulation grounding switch 2 is in the ground position, the current flows to the ground and does not flow to the solid insulation breaker 4 or the like at the rear stage. In addition, when the actuator 3 drives the solid insulated circuit breaker 4 to the cutoff position, the flow of current is disconnected from the solid insulated circuit breaker 4 and the rear cable junction box 8 'and the intermediate transfer cable C2. The current flow into the furnace is cut off.

On the other hand, with reference to Figures 4 and 1 will be described in detail the configuration and operation of the transformer transformer current transformer panel 20 of the instrument of the upper draw-out solid-insulated switchgear according to the present invention.

The transformer transformer current transformer panel 20 includes an intermediate transmission cable C2, a cable junction box 24, an intermediate junction box 23, an instrument transformer current transformer 22, a bushing 21, and a frame enclosure 25. ).

 The intermediate transfer cable C2 is a power supply cable whose one end is connected to the power receiving panel 10 as described above, and connects the cable to supply the electric power drawn out through the power receiving panel 10 to the transformer transformer current transformer panel 20 for the instrument ( 24).

The cable junction box 24 is a cable junction box having the same structure as the cable junction box 8 of the power receiving panel 10 described above, and similarly the vertical junction portion and the lateral intermediate junction box for vertical connection with the intermediate transfer cable C2. Having a horizontal conductor portion for horizontal connection with 23, these vertical conductor portions and horizontal conductor portions are preferably provided in the form of sockets and plugs, respectively.

The intermediate junction box 23 is connected between the cable junction box 24 and the transformer transformer current transformer 22 to transmit electric power transmitted through the inner conductor portion of the cable junction box 24 to the transformer transformer current transformer 22. As an energization means for forming, the inner conductor part which consists of a horizontal conductor part is comprised in the solid insulation material enclosure formed by casting. The horizontal conductor portion of the intermediate junction box 23 also has a structure of a socket and a plug, that is, one end of the socket type and the other end of the plug type so as to prevent easy separation when the cable junction box 24 and the transformer transformer current transformer 22 are connected. Has the structure

Instrument transformer current transformer 22 is a means for converting the power of the incoming high voltage high current into a 220 volt (Volt) level that can be metered by the external power meter, and outputs the AC power in the solid insulation enclosure A three-phase conductor part for providing an electrical path for transferring the three-phase electric power supplied and drawn into each of the three phases to the relay and measurement panel 30 in a subsequent step; And a transformer for stepping down the receiving voltage to a proportional low voltage and providing a current output signal proportional to the receiving current provided by acquiring the three phases of alternating current in the solid insulation enclosure. Current transformers and outputs that output metering voltage and current signals from these transformers and current transformers to the outside. And a terminal.

The bushing 21 is connected to the three-phase conductor portion of the transformer transformer current transformer 22 and bypasses the incoming three-phase power to the relay and measurement panel 30 and the distribution panel 40 at the rear stage. As an output terminal for transmitting by means of an output, it is composed of an insulating material outer coating part in which an electrical conductor part is embedded, and is electrically connected to the relay and measurement panel 30 at a rear end through a cable (not shown).

 The frame enclosure 25 is provided as a means for accommodating and supporting components therein, similarly to the frame enclosure 5 of the power receiving panel 10 described above.

Therefore, in the transformer transformer current transformer panel 20, the transformer transformer current transformer 22 is used as a signal of proportional low voltage and low current so that the amount of received power can be provided to a power meter of a not shown figure for measurement. Provide converted.

Meanwhile, with reference to FIGS. 1 and 5, the detailed configuration and operation of the relay and the measurement panel 30 among the components of the top pull-out type solid insulation switch gear according to the present invention will be described.

As shown in FIG. 5, the relay and measurement panel 30 may include a solid insulated disconnecting device 32, a solid insulated ground switch 33, and a component of the upper draw-out type solid insulated switchgear according to the present invention. Instrument transformer junction box 34, the instrument transformer (Potential Transformer 36) and the frame enclosure 35 is configured.

Since the disconnector 32 and the ground switch 33 have the same configuration and function as those of the solid insulated disconnector 1 and the solid insulated grounding switch 2 of the power receiving panel 10 described above, the detailed description thereof will be repeated. It will be omitted to avoid.

A displacer junction box 34 is electrically connected to the solid insulated ground switch 33 to provide electrical power therein for transferring power provided from the solid insulated ground switch 33 to the instrument transformer 36 in a subsequent step. It can be constructed in a structure similar to the above-mentioned cable junction boxes 8, 8 ', 9 by the junction of conductors enclosed in an enclosure encased with a solid insulating material. Displacement junction box 34 may be configured to correspond to the three-phase alternating current, each having a power fuse (not shown in Figure 5, but shown in Figure 1 as a circuit symbol) a power fuse (power fuse) Thus, when an overcurrent occurs, the power fuse may disconnect the circuit to protect the instrument transformer 36 at a later stage.

Instrument transformer 36 is composed of a transformer that is proportional to the voltage of the received power and provides a stepped down voltage as a secondary side output voltage for measurement. Three instrument transformers 36 may be configured to correspond to three-phase alternating current.

The frame enclosure 35 is provided as a means for accommodating and supporting components therein like the frame enclosure 5 of the power receiving panel 10 or the frame enclosure 25 of the transformer transformer current transformer panel 20 described above. do.

In the relay and measurement panel 30 among the components of the upper draw-out type solid-insulated switchgear, the electric power received using the solid-insulated disconnector 32 is supplied to a later stage (i.e., the distribution panel) or the supply is disconnected (disconnected). Position), and the operator insulates safety by grounding and discharging the remaining current in the state where the solid insulated disconnector 32 operates in the disconnected position when performing the branching or replacement of the line using the solid insulated ground switch 33. It can protect against an accident and can measure the voltage of the electric power currently received using the instrument transformer 36.

On the other hand, with reference to Figures 1 and 6 will be described in detail the configuration and operation of the distribution panel 40 of the components of the top pull-out solid-state switchgear according to the present invention.

As shown in FIG. 6, the power distribution panel 40 includes a solid insulated disconnector 42, a solid insulated ground breaker 43, and a solid insulated breaker 46. The cable C3 is connected in the vertical direction from the top for power distribution so that the power distribution is drawn to the top (upward) through the power distribution cable C3.

The power distribution panel 40 includes an actuator 44 for opening and closing the solid-state insulation circuit breaker 46 as shown in FIG. 6, and the actuator 44 includes the actuator 3 in the power receiving panel 10 described above. It can be configured in the same way. The power distribution panel 40 includes a cable junction box 50 for power distribution to the load side through the power distribution cable C3. The cable junction box 50 may be configured in the same manner as the cable junction box 8 in the power receiving panel 10 described above. In Fig. 6, the power distribution panel 40 according to the present invention includes a lightning arrester 47 for grounding a lightning strike, a lightning arrester junction box 48 for connecting the lightning arrester 7, a lightning arrester junction box 48, and a cable. And an intermediate junction box 49 for electrically connecting the junction boxes 50 to be insulated from each other. The power distribution panel 40 also includes a bushing 41 for receiving power, which bushing 41 includes bushings 21 and 31 in the above-described transformer transformer current transformer panel 20 and the relay and measurement panel 30. As shown in FIG. 1 with the same configuration as in FIG. 1, the received power of the power bypassed through the transformer transformer current transformer panel 20 is parallel to the relay and measurement panel 30 and the power distribution panel 40. Power is supplied via the bushing 41. On the other hand, reference numeral 45 is a frame enclosure for receiving and supporting the components inside the power distribution panel 40 described above. Detailed configuration description of the components described above in the description of the panel will be omitted to avoid duplicate description.

The operation of the components in the power distribution panel 40 is as follows. When power is supplied to the solid insulated disconnector 42 through the bushing 41, power is supplied to or disconnected from the solid insulated earthing switch 43 at the rear end according to the position of the solid insulated disconnector 42, that is, the energized position and the disconnected position. . The operator insulates safety by discharging the residual current to the grounded position while the solid insulated disconnector 32 operates in the disconnection position when performing the branching or replacement of the line using the solid insulated grounding switch 33. It can protect against accidents, and the distribution to the load side is made or interrupted by the position of the solid state insulation breaker 46, that is, the energized or interrupted position. Therefore, when the solid insulated disconnector 42 is the energized position, the solid insulated ground switch 43 is the energized position instead of the grounded position, and the solid insulated breaker 46 is also the energized position, the power supplied through the bushing 41 is solid. Through the distribution cable C3 through the insulated disconnector 42, the solid insulated grounding switch 43, the solid insulated breaker 46, the arrester junction box 48, the intermediate junction box 49, the cable junction box 50 It is withdrawn (supplyed) to the load side.

On the other hand, with reference to Figures 7 to 10 and 12 will be described the configuration and operation of the solid insulated switchgear of the lower draw-out structure according to the present invention.

7 and 8, the solid insulated switchgear 200 having a lower draw-out structure according to the present invention includes a power receiving panel 110, a transformer current transformer panel (aka MOF panel) 120, Relay and measurement panel 130, the distribution panel 140 is configured to include.

As shown in FIGS. 7 and 9, the power receiving panel 110, which is a component of the solid insulated switchgear 200 having a lower draw-out structure according to the present invention, includes a solid insulated disconnecting unit 111 and a solid insulated grounding breaker ( 112 and a solid-state insulating circuit breaker 115, and is connected in a vertical direction for receiving the electric wire, that is, the power receiving cable C1, which is drawn from the bottom to supply power.

The power receiving panel 110 includes an actuator 113 for opening and closing the solid state circuit breaker 115 as shown in FIG. 9, and the cable connection box 117c for receiving power through the power receiving cable C1. It includes. In FIG. 9, the power receiving panel 110 according to the present invention is connected between the lightning arrester 116 for grounding a lightning strike, the power receiving panel 110 and the transformer transformer current transformer panel 120 for supplying power (transmission). An intermediate transmission cable C2 to be carried out, a cable connector 117a for connecting the intermediate transmission cable C2, and an arrester junction box 117b for connecting the lightning arrester 116 to each other. On the other hand, reference numeral 114 is a frame enclosure (frame enclosure) for receiving and supporting the components in the interior of the power receiving panel 110 described above. The power receiving panel 110 according to the present invention shown in FIG. 9 has the same configuration as the power receiving panel 10 described above with reference to FIG. 3 except that the power receiving cable C1 is drawn in and connected from the bottom thereof. Therefore, detailed description of the components of the power receiving panel 110 will be omitted to avoid duplication.

The operation of the power receiving panel 110 will be described.

The current drawn from the lower part through the power receiving cable C1 is connected to the conductor part in the cable junction box 8 through the internal fixing and movable contact of the solid insulated disconnector 111 and the conductor part. Via the internal fixing and movable contact of the 112 and the conductor portion, it flows out through the inner conductor portion of the cable junction box 117a and the intermediate transfer cable C2 through the solid insulation breaker 115, which is also the energized position. At this time, since the internal fixed and movable contacts are separated when the solid insulated disconnector 111 is in the disconnected position, current flow is interrupted by the solid insulated disconnector 111 and the flow of current is disconnected to the solid insulated grounding switch 112 at the rear end. . In addition, when the solid insulated ground switch 112 is in the ground position, the current flows out to the ground and does not flow to the solid insulated breaker 115 in the rear stage. In addition, when the actuator 113 drives the solid insulated circuit breaker 115 to the cutoff position, the flow of current is disconnected from the solid insulated circuit breaker 115 and is connected to the rear cable junction box 117a and the intermediate transfer cable C2. Current flow is interrupted.

In the solid insulated switchgear 200 having a bottom draw-out structure according to the present invention,

METERING OUT FIT (abbreviated MOF) panel 120, and relay and measurement panel 130 is used for instrument in the solid insulated switchgear of the upper draw-out structure described above with reference to Figures 4 and 5, respectively. Since the configuration and operation are the same as the transformer current transformer panel 20 and the relay and measurement panel 30, the detailed description of the drawings and detailed description thereof will be omitted to avoid duplication. METERING OUT FIT (abbreviation MOF) panel 120 is electrically connected to the power receiving panel 110, and has a current transformer and a transformer for the instrument not shown to provide the current and voltage of the received power. Provides the conversion to the level for metering the power meter not shown. The relay and measurement panel 130 is electrically connected to the transformer transformer current transformer panel 120 and includes a phase transformer transformer.

Meanwhile, referring to FIGS. 7 and 10, a detailed configuration and operation of the power distribution panel 140, which is a component of the solid insulated switchgear 200 having a lower draw-out structure according to the present invention, will be described.

The power distribution panel 140 includes a solid insulation disconnecting unit 141, a solid insulation grounding breaker 142, and a solid insulation circuit breaker 145. The power distribution panel 140 draws power from the lower part to supply power, that is, distribution cable C2 and distribution. To the vertical direction.

The power distribution panel 140 includes an actuator 143 for opening and closing the solid-state insulation circuit breaker 145 as shown in FIG. 10, and the actuator 143 includes the actuator 44 in the power distribution panel 40 described above. It can be configured in the same way. The power distribution panel 140 includes a cable junction box 147a for power distribution to the load side through the power distribution cable C3. The cable junction box 147a may be configured in the same manner as the cable junction box 8 in the power receiving panel 10 described above. In FIG. 10, the power distribution panel 140 according to the present invention includes a lightning arrester 146 for grounding a lightning strike and a lightning arrester junction box 147b for connecting the lightning arrester 146. The power distribution panel 140 also includes a bushing 148 for receiving power, which bushings 148 include bushings 21 and 31 in the transformer transformer current transformer panel 20 and the relay and measurement panel 30 described above. As shown in FIG. 7 with the same configuration as shown in FIG. 7, the received power of the power bypassed through the transformer transformer current transformer panel 120 is parallel to the relay and measurement panel 130 and the power distribution panel 140. Power is supplied through the bushing 148. On the other hand, reference numeral 144 is a frame enclosure for receiving and supporting the components inside the power distribution panel 140 described above. Detailed configuration description of the components described above in the description of the panel will be omitted to avoid duplicate description.

The operation of the components in the power distribution panel 140 will be described below. When power is supplied to the solid insulation disconnecting unit 141 through the bushing 148, the power is supplied to or disconnected from the solid insulation grounding switch 142 at the rear end according to the position of the solid insulation disconnecting unit 141, that is, the energization position and the disconnection position. . Safety of worker by discharging residual current to ground position while solid insulation disconnector 141 is operated in disconnection position when carrying out branch or replacement work of line using solid insulation ground switch 142 It can protect against an accident, and the distribution to the load side is made or blocked by the position of the solid state insulation breaker 145, that is, the energized or interrupted position. Therefore, when the solid insulated disconnector 141 is the energized position, the solid insulated ground switch 142 is the energized position, not the grounded position, and the solid insulation breaker 145 is also the energized position, the power supplied through the bushing 148 is solid insulated. It is withdrawn (supplied) to the load side through the distribution cable C3 through the disconnector 141, the solid insulated grounding switch 142, the solid insulated breaker 145, and the cable connection box 147a.

As described above, by providing a solid-insulated switchgear according to the present invention, it is possible to provide a switchgear that is eco-friendly and meets the eco-friendly requirements of various countries internationally, by not using SF6 gas which is regulated internationally. Can be obtained. In addition, according to the present invention there is an effect that can obtain a solid insulated switchgear suitable for the installation environment of the switchgear should be drawn in the power cable for receiving power from the top and the power cable for power distribution to the top. In addition, according to the present invention, it is possible to obtain a solid-insulated switchgear suitable for the installation environment of the switchgear which has to draw the power cable for receiving power from the bottom and the power cable for power distribution to the bottom.

1 is a circuit diagram showing the configuration of a solid-insulated switchgear of the top draw-out structure according to the present invention in each panel and circuit configuration,

2 is a front view showing the configuration of a solid-insulated switchgear having a top draw-out structure according to the present invention with the appearance of each panel and input / output power cable,

3 is a front view illustrating an internal configuration of a power receiving panel of a solid insulated switchgear having a top draw-out structure according to the present invention;

4 is a front view showing the internal configuration of the MOF panel of the solid insulated switchgear of the top draw-out structure according to the present invention,

5 is a front view showing the internal configuration of the measurement and relay panel of the solid state switchgear of the top draw-out structure according to the present invention,

6 is a front view illustrating an internal configuration of a distribution panel of a solid insulated switchgear having a top draw-out structure according to the present invention;

FIG. 7 is a circuit diagram illustrating the configuration of a solid insulated switchgear having a bottom draw-out structure according to the present invention in each panel and circuit configuration. FIG.

FIG. 8 is a front view showing the configuration of a solid insulated switchgear having a bottom draw-out structure according to the present invention as an outline of each panel and an input / output power cable; FIG.

9 is a front view illustrating an internal configuration of a power receiving panel of a solid insulated switchgear having a bottom drawout structure according to the present invention;

10 is a front view illustrating an internal configuration of a power distribution panel of a solid insulated switchgear having a bottom draw-out structure according to the present invention;

11 is a perspective view showing an overall appearance of a solid insulated switchgear having a top draw-out structure according to the present invention;

12 is a perspective view showing an overall appearance of a solid insulated switchgear having a bottom draw-out structure according to the present invention.

* Explanation of symbols on the main parts of the drawings

1, 111, 141: solid insulation disconnector 2, 112, 142: solid insulation grounding switch

3, 44, 113, 143: actuator

4, 46, 115, 145: breaker

5, 25, 35, 45, 114: frame enclosure

7, 47, 116, 146: lightning arrestor

8, 8 ', 24, 50, 117a, 117c, 147a: cable connector

9, 48, 117b, 147b: lightning arrester junction box

C1: power cable C2: intermediate transmission cable

C3: power distribution cable 10, 110: incoming panel

20, 120: transformer current transformer (MOF) panel (MOF pannel)

21, 31, 41, 148: bushing 22: metering out fit

23, 49, 118: intermediate junction box 30, 130: relay and measurement panel

31: bushing 32, 42: disconnector

33, 43: Earthing switch 34: Instrument transformer (PT) junction box

36: Potential Transformer

40, 140: feeder pannel

100: top draw-out type solid state insulated switchgear

200: bottom pull-out type solid insulated switchgear

Claims (12)

An INCOMING PANNEL having a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, and connected for a power supply and an electric wire to supply incoming power; A transformer transformer current transformer panel electrically connected to the power receiver panel, the transformer transformer current transformer panel having an instrument current transformer and an instrument transformer for converting the current and voltage of the received power into a level for metering the electricity meter; A relay and measurement panel electrically connected to said transformer transformer current transformer panel and having a phase transformer transformer; And A solid insulated switchgear, comprising a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, comprising a power distribution line and a distribution panel connected for distribution. The method of claim 1, The faucet panel, And a current transformer installed around the phase intermediate transmission cable electrically connected to the transformer transformer current transformer panel for detecting the current amount. The method of claim 1, The relay and measurement panel, And a solid insulated switchgear and a solid insulated ground switch. The method of claim 1, The power receiving panel and the power distribution panel, Solid-state switchgear provided by a phase further comprises a lightning arrester for grounding the lightning. An INCOMING PANNEL having a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, and connected in a vertical direction for receiving a wire and a power supply received from the top; A transformer transformer current transformer panel electrically connected to the power receiver panel, the transformer transformer current transformer panel having an instrument current transformer and an instrument transformer for converting the current and voltage of the received power into a level for metering the electricity meter; A relay and measurement panel electrically connected to said transformer transformer current transformer panel and having a phase transformer transformer; And A solid insulated switchgear comprising a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, comprising: a wire drawn out to supply power and a distribution panel connected in a vertical direction for distribution. The method of claim 5, The faucet panel, And a current transformer installed around the phase intermediate transmission cable electrically connected to the transformer transformer current transformer panel for detecting the current amount. The method of claim 5, The relay and measurement panel, And a solid insulated switchgear and a solid insulated ground switch. The method of claim 5, The power receiving panel and the power distribution panel, Solid-state switchgear provided by a phase further comprises a lightning arrester for grounding the lightning. An INCOMING PANNEL having a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, and connected in a vertical direction for receiving a wire and a power supply received from the bottom to supply power; A transformer transformer current transformer panel electrically connected to the power receiver panel, the transformer transformer current transformer panel having an instrument current transformer and an instrument transformer for converting the current and voltage of the received power into a level for metering the electricity meter; A relay and measurement panel electrically connected to said transformer transformer current transformer panel and having a phase transformer transformer; And A solid insulated switchgear comprising a solid insulated disconnector, a solid insulated ground breaker, and a solid insulated breaker, comprising a wire that is drawn out to supply power and a distribution panel connected in a vertical direction for distribution. 10. The method of claim 9, The faucet panel, And a current transformer installed around the phase intermediate transmission cable electrically connected to the transformer transformer current transformer panel for detecting the current amount. 10. The method of claim 9, The relay and measurement panel, And a solid insulated switchgear and a solid insulated ground switch. 10. The method of claim 9, The power receiving panel and the power distribution panel, Solid-state switchgear provided by a phase further comprises a lightning arrester for grounding the lightning.

Images