KR20040003931A - A Cable Connect Box and Hindrance Detect Method of Electric Cable - Google Patents
A Cable Connect Box and Hindrance Detect Method of Electric Cable Download PDFInfo
- Publication number
- KR20040003931A KR20040003931A KR1020020038781A KR20020038781A KR20040003931A KR 20040003931 A KR20040003931 A KR 20040003931A KR 1020020038781 A KR1020020038781 A KR 1020020038781A KR 20020038781 A KR20020038781 A KR 20020038781A KR 20040003931 A KR20040003931 A KR 20040003931A
- Authority
- KR
- South Korea
- Prior art keywords
- cable
- disconnector
- power
- built
- power cable
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
Abstract
Description
본 발명은 철도 역사와 역사간의 터널 및 신호전원을 공급하기 위한 고압배전선로 유지보수의 신속 및 효율성을 위한 것으로, 전력케이블 장애발생시에 고장구간을 신속하게 확인하고 보수하기 위한 단로기가 내장된 케이블접속함 및 이를 이용한 단선 검출방법에 관한 것이다.The present invention is for the fast and efficient maintenance of high-voltage distribution lines for supplying tunnel and signal power between railway stations and stations, and cable connection with a disconnecting device for quickly checking and repairing a fault section in the event of a power cable failure. And a disconnection detection method using the same.
이를 좀 더 상세히 설명하면, 역간의 고압지중배전선로사이에 케이블접속함을 등간격으로 설치함에 있어서, 케이블접속함의 내부에 단로기를 내장시키고, 단로기의 단자에 귀로선으로 사용되는 전력케이블의 단부를 연결하여 공급되는 전력을 ON/OFF시킬 수 있도록 하며, 이와 같이 단로기가 내장된 케이블접속함을 역간배전선로의 사이에 설치하여 줌으로써 전력케이블장애발생시에 고장구간을 순차적으로 체크하여 단선부분을 신속하고 용이하게 검출할 수 있도록 된 단로기가 내장된 케이블접속함 및 이를 이용한 단선 검출방법을 제공하려는 것이다.In more detail, in the installation of cable junction boxes between the high voltage underground distribution lines at equal intervals, a breaker is built into the cable junction box, and an end of the power cable used as a return line at the terminal of the disconnector is It is possible to turn on / off the power supplied by connecting the cable junction box with the built-in disconnector between the reverse distribution lines. An object of the present invention is to provide a cable junction box with a built-in disconnector that can be easily detected, and a disconnection detection method using the same.
도 1은 케이블설치도(1)를 보인 것이다. 대체적으로 20 ~ 30 Km의 간격으로 이격된 역구내의 수전변전소(2)의 사이에 고압용 전력케이블(3)을 지중에 매설하여 설치(3상으로 설치함)하되, 수전변전소(2)의 사이에 케이블접속함(5)을 소정의 간격으로 설치하였고 케이블접속함(5)끼리의 사이에는 200m의 간격으로 맨홀(7)을 설치하였으며, 전력케이블(3)을 맨홀(7)과 케이블접속함(5)으로 통과키면서 전선보호관(4)에 삽입하여 지중에 매설하였었다.1 shows a cable installation diagram (1). In general, the high-voltage power cable (3) is buried in the ground (installed in three phases) between the power receiving substations (2) in the reverse area spaced at intervals of 20 to 30 Km. The cable junction box (5) was installed at predetermined intervals between them, and the manhole (7) was installed at intervals of 200 m between the cable junction boxes (5), and the power cable (3) was connected to the manhole (7). Passing through the box (5) was inserted into the wire protection tube (4) was buried underground.
특히, 종래의 케이블접속함(5)은 도 2a 및 도 2b에 도시된 바와 같이 케이블접속함(5)의 내부에서 양측의 전력케이블(3)의 단부를 접속시켜 줌에 있어, 구체적으로 도시하지는 아니하였으나 양측의 전력케이블(3)의 단부를 압착슬리브로 연결하고, 압착슬리브와 연결되는 전력케이블(3)의 단부의 외측에 케이블절연체를 도포시키되 도포된 케이블절연체의 외부에 케이블접속커버를 씌워 주었었다.In particular, the conventional cable junction box 5 is connected to the ends of the power cable 3 on both sides in the cable junction box 5, as shown in Figure 2a and 2b, not specifically shown However, the ends of the power cables 3 on both sides are connected by crimp sleeves, and a cable insulator is applied to the outside of the ends of the power cables 3 connected to the crimp sleeves, and a cable connection cover is placed on the outside of the applied cable insulator. Gave.
또한 맨홀(8)에서는 도 2a에 도시된바와 같이 매설되는 전력케이블(3)을 맨홀(8)의 내부에서 한바퀴 회전시켜 원으로 형성시키면서 매설하였었다.In addition, in the manhole 8, the electric power cable 3 embedded as shown in Figure 2a was embedded while rotating one round inside the manhole 8 to form a circle.
그러나, 종래의 케이블접속함(5)을 사용하면서 전력케이블(3)을 설치(매설)하게 되면 매설된 전력케이블(3)이 단선되었을 때에 단선지점을 용이하게 검출할 수 없었고, 단선지점을 검출하기 위하여 고압배전선로 구간내의 전력을 차단시켜 주어야 하는 문제가 있었다.However, when the power cable 3 is installed (embedded) while using the conventional cable junction box 5, the disconnection point cannot be easily detected when the embedded power cable 3 is disconnected, and the disconnection point is detected. In order to do so, there was a problem that the power in the high-voltage distribution line should be cut off.
즉, 종래의 케이블접속함(5)은 분리된 양측 전력케이블(3)끼리의 단부를 압착슬리브와 케이블절연체 및 케이블접속커버를 이용하여 일체형으로 연결시켰으므로 고압배전선로 구간내의 전력케이블(3)을 하나의 형태를 유지하게 된다. 이와 같이 하나의 형태로 된 전력케이블(3)이 케이블접속함(5)의 소정구간에서 단선이 발생하게 되면 케이블접속함(5)에서는 전력케이블(3)을 차단할 수 없으므로 고압배선선로 구간(20 ~ 30 Km)의 전력케이블(3)에 공급되는 전력을 OFF시켜 주어야 했었고, 따라서 역간의 고장구간 확인에 장시간이 소요되므로 유지보수에 어려움이 발생되고 있다.That is, the conventional cable junction box (5) is connected to the ends of the two separate power cables (3) integrally using the crimp sleeve, the cable insulator and the cable connection cover, so that the power cable (3) in the high-voltage distribution line section It will maintain one form. When disconnection occurs in a predetermined section of the cable connection box 5 in one form of the power cable 3 as described above, the cable connection box 5 cannot block the power cable 3 so that the high-voltage wiring section 20 It was necessary to turn off the power supplied to the power cable (3) of ~ 30 Km), and therefore it takes a long time to check the fault interval between the stations, causing difficulties in maintenance.
또한, 전력케이블(3)의 단선 구간 및 위치를 전혀 확인할 수 없으므로 고장구간을 찾기 위하여 절연절연저항을 측정하면서 단선 위치를 찾아야 하므로 시간이 많이 소요되고 작업 능률이 떨어지는 문제가 있었다.In addition, since the disconnection section and position of the power cable 3 cannot be confirmed at all, it is necessary to find the disconnection position while measuring the insulation insulation resistance in order to find the fault section.
특히, 단선위치를 찾기 위해서는 맨홀(8) 및 케이블점속함(5)을 순차적으로 이동하면서 통과하는 전력케이블(3)의 피복을 벗긴 후에 절연절연저항을 측정하고 측정후에는 절연물질로 다시 절연시켜 주어야 했으므로, 전력케이블(3)을 심하게 손상시키게 되고 작업이 매우 번거로울 뿐만 아니라 검출시간이 많이 소요되는 문제가 있었으며, 전력케이블(3)의 수명을 현저하게 단축시키게 되므로 전력케이블(3)을 교체시키는데 따른 보수유지비용이 많이 소요되는 문제도 있었다.In particular, in order to find the disconnection position, after removing the covering of the power cable 3 passing through the manhole 8 and the cable junction box 5 sequentially, the insulation insulation resistance is measured, and after insulation, the insulation material is insulated again. Since the power cable (3) was severely damaged, the work was very troublesome, and there was a problem that it took a lot of detection time, and the life of the power cable (3) was significantly shortened. There was also a problem that takes a lot of maintenance costs.
본 발명은 상기와 같은 문제를 해소할 수 있도록 개선된 단로기가 내장된 옥외용 케이블접속함 및 이를 이용한 단선 검출방법을 제공하려는 것이다.The present invention is to provide an outdoor cable connection box with a built-in disconnector improved to solve the above problems and a disconnection detection method using the same.
본 발명은 고압배전선로 케이블접속함을 등간격으로 설치함에 있어서, 케이블접속함의 내부에 단로기를 내장시키고 단로기의 단자에 귀로선으로 사용되는 전력케이블의 단부를 연결하여 공급되는 전력을 ON/OFF시킬 수 있도록 된 단로기가 내장된 케이블접속함을 제공하며, 이와 같이 단로기가 내장된 케이블접속함을 고압배전선로에 일정한 간격으로 설치하여 줌으로써 전력케이블이 단선되었을 때에 케이블접속함끼리의 사이를 순차차적으로 체크하면서 검출할 수 있도록 된 단로기가 내장된 케이블접속함을 이용한 단선 검출방법을 제공하려는데 그 목적이 있다.The present invention is to install a high-voltage distribution line cable junction box at equal intervals, the built-in disconnector inside the cable junction box and to connect the end of the power cable used as a return line to the terminal of the disconnector to turn ON / OFF the power supplied A cable junction box with a built-in disconnector is provided.In this way, a cable junction box with a disconnected circuit breaker is installed on a high-voltage distribution line at regular intervals. An object of the present invention is to provide a disconnection detection method using a cable junction box with a built-in disconnector that can be detected while checking.
본 발명의 다른 목적은 함체의 내부에 단로기를 내장시켜 전력케이블을 손상시키지 않고 전력의 공급상태를 측정(체크)할 수 있고, 단로기는 레버를 작동시키는 간단한 조작에 의해 전력을 ON/OFF시킬 수 있으며, 구조가 간단하여 용이하게 제작할 수 있으며, 관리보수비용이 거의 소요되지 않도록 된 단로기내장형접속함을 제공하는데 있다.Another object of the present invention is to install a disconnector inside the enclosure can measure (check) the power supply state without damaging the power cable, the disconnector can turn the power ON / OFF by a simple operation to operate the lever. In addition, since the structure is simple, it can be easily manufactured, and to provide a built-in disconnection box in which the maintenance and maintenance costs are hardly required.
본 발명의 또 다른 목적은 단로기가 내장된 단로기내장형접속함을 고압배전선로에 설치하되 복수개를 소정의 간격으로 설치하여 전력케이블에 단선이 발생하였을 때에 단로기내장형접속함의 단로기와 단로기내장형접속함의 단로기와의 사이의 전력을 OFF시킨 상태에서 단로기와 단로기사이의 전력케이블의 절연절연저항을 측정하면서 단선상태를 체크함으로써 전력의 사멸구간을 현저히 짧게 하면서 체크를 실시할 수 있도록 하고, 각 단로기내장형접속함을 순차적으로 ON/OFF시키므로 단선구간을 쉽게 체크할 수 있으며, 단선이 확인된 전력케이블만을 보수하도록 하여 보다 신속하고 용이하게 유지관리할 수 있으며, 보수비용을 절감할 수 있도록 된 단로기가 내장된 케이블접속함을 이용한 단선 검출방법을 제공하는데 있다.Yet another object of the present invention is to install a built-in disconnector with a disconnecting device in the high-voltage distribution line, but when a plurality of times are installed at predetermined intervals, when disconnection occurs in the power cable, the disconnecting device of the built-in disconnector and Check the disconnection status while measuring the insulation insulation resistance of the power cable between the disconnector and the disconnector while the power between the circuits is turned off, so that the check can be carried out with the shortening period of the power significantly shortened. It can turn ON / OFF sequentially so that disconnection section can be easily checked, and it is possible to maintain only the power cable whose disconnection is confirmed, so that it can be maintained more quickly and easily, and cable connection with built-in disconnector can reduce maintenance cost. It is to provide a disconnection detection method using a box.
본 발명의 상기 및 기타 목적은,The above and other objects of the present invention,
고압배전선로 중간에 복수개의 케이블접속함(5)을 소정의 간격으로 설치하고 각 케이블접속함(5)의 사이에 복수개씩의 맨홀(8)을 구비하여 전력케이블(3)을 전선보호관(4)에 삽입하여 설치하는 것에 있어서, 함체(11)의 내부에 단로기(20)를 내장시키고, 단로기(20)의 단자(21)(22)에 귀로선으로 사용되는 전력케이블(3)의 단부를 연결하며, 레버(23)에는 작동바(24)를 장착하여 공급되는 전력을 ON/OFF시킬 수 있도록 된 단로기내장형케이블접속함(10)에 의해 달성된다.A plurality of cable junction boxes (5) are installed at predetermined intervals in the middle of the high-voltage distribution line, and a plurality of manholes (8) are provided between the cable junction boxes (5) to connect the power cable (3) to the wire protective tube (4). In the case of inserting and inserting into the cable), the disconnecting device 20 is built into the enclosure 11, and the end of the power cable 3 used as a return line is connected to the terminals 21 and 22 of the disconnecting device 20. The lever 23 is attached to the lever bar 23 is achieved by the built-in disconnecting cable connection box 10 to turn on / off the power supplied.
본 발명의 또 다른 상기 및 기타 목적은,Another and other object of the present invention,
고압배전선로 중간에 설치된 케이블접속함(5)이 소정의 간격으로 구비되고 각 케이블접속함(5)의 사이에 복수개씩의 맨홀(8)이 구비되며 전선보호관(4)에 삽입되면서 수전변전소(2)의 사이에 설치되는 전력케이블(3)의 단선상태를 전력케이블(3)의 절연저항을 측정하면서 단선상태를 측정하는 것에 있어서, 단로기(20)가 내장된 복수개의 단로기내장형접속함(10)을 수전변전소(2)의 사이에 설치하여 전력케이블(3)에 단선이 발생하였을 때에 인접하는 단로기내장형접속함(10)의 단로기(20)와 단로기내장형접속함(10)의 단로기(20)를 OFF시킨 상태에서 이들 단로기(20)와 단로기(20)사이의 전력케이블(3)의 절연저항을 측정하면서 단선상태를 체크하도록 하는 것을 특징으로 하는 단로기가 내장된 케이블접속함을 이용한 전력케이블의 단선 검출방법에 의해 달성된다.The cable junction box 5 installed in the middle of the high-voltage distribution line is provided at predetermined intervals, and a plurality of manholes 8 are provided between each cable junction box 5 and inserted into the wire protection tube 4 while receiving the power substation ( In the disconnection state of the power cable 3 provided between 2), the insulation state of the power cable 3 is measured while measuring the disconnection state. ) Is installed between the power substations (2), and when disconnection occurs in the power cable (3), the disconnector (20) of the adjacent disconnector built-in junction box (10) and the disconnector (20) of the disconnector built-in junction box (10). Of the power cable using the cable connection box with the built-in disconnector, characterized in that the disconnection state is checked while measuring the insulation resistance of the power cable 3 between the disconnector 20 and the disconnector 20 in the OFF state. Achieved by the disconnection detection method .
도 1은 종래의 케이블접속함을 이용한 전력케이블의 설치상태도.1 is a state diagram of the installation of a power cable using a conventional cable connection box.
도 2a 및 도 2b는 도 1에 예시된 종래 케이블접속함을 이용한 설치상태를 보 인 부분확대도 및 종래 케이블접속함의 정면도.Figures 2a and 2b is a partial enlarged view showing the installation state using the conventional cable junction box illustrated in Figure 1 and a front view of a conventional cable junction box.
도 3은 본 발명에 따른 단로기내장형케이블접속함을 이용한 전력케이블의 설치상태도.Figure 3 is a state diagram of the installation of a power cable using a cable breaker built-in disconnector according to the present invention.
도 4a 및 도 4b는 본 발명에 따른 단로기내장형케이블접속함의 정단면도 및 측단면도.Figures 4a and 4b is a front cross-sectional view and side cross-sectional view of the built-in disconnecting cable connection box according to the present invention.
* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
1.1-1. 케이블설치도 2. 수전변전소 3. 전력케이블1.1-1. Cable installation diagram 2. Power substation 3. Power cable
4. 케이블보호관 5. 케이블접속함 6. 케이블접속커버4. Cable protector 5. Cable box 6. Cable connection cover
8. 맨홀 10. 단로기내장형케이블접속함8. Manhole 10. Cable built-in disconnector
11. 함체 12. 개폐문 13. 콘크리트받침11. Enclosure 12. Opening and closing door 13. Concrete support
14. 지지용앵커볼트 20. 단로기 23. 레버14. Supporting anchor bolt 20. Disconnector 23. Lever
본 발명의 상기 및 기타 목적과 특징은 첨부도면에 의거한 다음의 상세한 설명에 의해 더욱 명확하게 이해 할 수 있을 것이다.The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.
첨부도면 도 3 내지 도 4b는 본 발명의 구체적인 실현예를 보인 예시도로써, 도3은 단로기내장형케이블접속함을 이용한 전력케이블의 설치상태도이고, 도 4a 및 도 4b는 본 발명에 따른 단로기내장형케이블접속함의 정단면도 및 측단면도이다.3 to 4b are exemplary views showing a specific embodiment of the present invention, Figure 3 is a state diagram of the installation of a power cable using a disconnecting device built-in cable box, Figure 4a and 4b is a disconnecting device built-in cable according to the present invention Front and side cross-sectional views of the junction box.
함체(11)의 내부 상측에 브라켓(23)을 이용하여 전선보호관(4)에 삽입되어 배선되는 전력케이블(3)의 단부를 고정시킬 수 있도록 압력측과 출력측의 단자(21)(22)가 구비된 통상의 단로기(20)를 장착하였고, 단로기(20)의 레버(23)에는 작동바(24)를 설치하였다.The terminals 21 and 22 of the pressure side and the output side are fixed to the upper end of the enclosure 11 so that the ends of the power cable 3 inserted and wired into the wire protection tube 4 by the bracket 23 can be fixed. A conventional disconnecting device 20 provided was mounted, and an operating bar 24 was installed on the lever 23 of the disconnecting device 20.
이와 같이 구성된 단로기내장형케이블접속함(10)은 도 3에 예시된바와 같이 일정한 간격으로 이격시키면서 도 4a 및 도 4b에 예시된바와 같이 설치하게 된다.The disconnecting device built-in cable connection box 10 configured as described above is installed as illustrated in FIGS. 4A and 4B while being spaced at regular intervals as illustrated in FIG. 3.
지중에 콘크리트받침(13)을 설치하여 구비하였고, 콘크리트받침(13)의 상면에 통상의 지지용앵커볼트(14)를 사용하여 내부에 단로기(20)가 구비된 단로기내장형케이블접속함(10)의 함체(11)의 바닥면을 고정시켰으며, 입력측 및 출력측의 각 단자(21)(22)에는 전선보호관(4)에 삽입되어 배선되는 각 입/출력측 전력케이블(3)의 단부를 연결 고정시켜 주도록 하였다.A concrete supporter 13 was installed in the ground and provided, and a disconnecting device built-in cable connection box 10 having a disconnector 20 therein using a normal support anchor bolt 14 on the upper surface of the concrete support 13 was installed. The bottom surface of the enclosure 11 is fixed, and the terminals 21 and 22 on the input side and the output side are connected and fixed to the ends of each input / output side power cable 3 inserted and wired into the wire protection tube 4. It was made.
이와 같이 수전변전소(2)의 사이에 일정한 간격으로 이격설치되는 본 발명에 따른 단로기내장형케이블접속함(10)을 이용하여 고압배전선로에 발생하는 전력케이블(3)의 단선 검출은 다음과 같은 방법에 의해 검출할 수 있게 된다.As described above, the disconnection detection of the power cable 3 generated in the high-voltage distribution line using the disconnecting device built-in cable junction box 10 according to the present invention, which is spaced at regular intervals between the power substations 2, is as follows. It can be detected by.
전력케이블(3)에 단선이 발생하였을 때에 인접하는 단로기내장형접속함(10)의 단로기(20)와 단로기내장형접속함(10)의 단로기(20)를 OFF시킨 상태에서 이들 단로기(20)와 단로기(20)사이의 전력케이블(3)의 절연저항을 측정하면서 단선상태를 체크하게 된다.When disconnection occurs in the power cable 3, the disconnectors 20 and disconnectors of the adjacent disconnector built-in junction box 10 and the disconnector 20 of the disconnector built-in junction box 10 are turned off. The disconnection state is checked while measuring the insulation resistance of the power cable 3 between (20).
즉, 한 역구내 수전설비로부터 설치된 단로기내장형접속함(10)과 이 수전설비에서 가장 인접하는 첫번째 단로기내장형접속함(10)의 각 작동바(24)를 조작하여 레버(23)를 작동시켜 각 단로기(20)를 OFF시켜 수전설비의 단로기내장형접속함(10)과 인접하는 첫 번째 단로기내장형접속함(10)과의 사이에 배선된 전력케이블(3)에 전원이 도통되지 않도록 차단시켜 준 상태에서 이들 전력케이블(3)을 통상의 절연저항값을 측정하는 방법에 의해 저항값을 측정하여 주며, 절연저항 값이 정상적이면 측정되는 수전변전소(2)의 단로기내장형접속함(10)과 인접하는 첫 번째 단로기내장형접속함(10)과의 사이에 배선된 전력케이블(3)은 단선되지 않은 정상상태로 판정하게 된다.That is, the lever 23 is operated by operating each operation bar 24 of the disconnecting device built-in junction box 10 installed from a power receiving facility in one station and the first disconnecting device built-in junction box 10 adjacent to the receiving device. A state in which the power is disconnected from the power cable 3 wired between the disconnecting device built-in junction box 10 of the power receiving equipment and the adjacent first disconnecting device built-in junction box 10 of the power receiving equipment by turning off the disconnecting device 20. The resistance values of the power cables 3 are measured by a method of measuring an ordinary insulation resistance value, and when the insulation resistance value is normal, adjacent to the breaker built-in junction box 10 of the power substation 2 to be measured. The power cable 3 wired between the first disconnecting device built-in junction box 10 is determined to be in a normal state without disconnection.
이와 같이 방법을 이용하여 첫 번째 단로기내장형접속함(10)과 두 번째 단로기내장형접속함(10)의 각 단로기(20)의 작동바(24)를 조작하여 레버(23)를 작동시켜 각 단로기(20)를 OFF시켜 준 상태에서 첫 번째와 두 번째 단로기내장형접속함(10)과의 사이에 배선된 전력케이블(3)의 저항값을 측정한다. 저항 값이 비 정상적이면 측정되면 측정되는 전력케이블(3)은 고장된 상태로 판정하여 이들구간의 전력케이블(3)을 보수하고, 저항 값이 정상적이면 측정되면 측정되는 전력케이블(3)은 고장이 아닌 정상상태로 판정하게 되며, 두 번째 단로기내장형접속함(10)과 세 번째 단로기내장형접속함(10)과의 사이에 배선된 전력케이블(3)을 전술한바와 같은 절연저항 측정을 이용하여 배선된 전력케이블(3)의 저항값을 측정하여 단선여부를 판정하게 된다.By using the method as described above, the lever 23 is operated by operating the operation bar 24 of each disconnector 20 of the first disconnector built-in junction box 10 and the second disconnector built-in junction box 10 to connect each disconnector ( In the state of OFF, measure the resistance value of the power cable (3) wired between the first and the second breaker built-in junction box (10). If the resistance value is abnormal, the measured power cable 3 is determined to be in a broken state, and the power cable 3 is repaired in these sections. If the resistance value is normal, the measured power cable 3 is broken. It is determined as a normal state, and the power cable 3 wired between the second breaker built-in junction box 10 and the third breaker built-in junction box 10 by using the insulation resistance measurement as described above. The resistance value of the wired power cable 3 is measured to determine whether the wire is disconnected.
상기와 같은 방법에 의해 인접하는 단로기내장형접속함(10)과의 사이에 배선된 전력케이블(3)의 저항값을 측정하여 단선여부를 판정하여 주고, 단선상태로 판정된 구간의 전력케이블(3)만을 보수하게 되는 것이다.By measuring the resistance value of the power cable (3) wired between the adjacent breaker built-in junction box 10 by the above method, it is determined whether or not disconnection, and the power cable (3) ) Will only be repaired.
이상에서와 같이 본 발명에 따른 단로기내장형접속함을 고압배전선로의 전력케이블의 중간에 소정의 간격으로 유지시켜 설치해 주게 되면 인접하는 각 단로기내장형접속함의 단로기를 OFF시켜 이들 구간의 전력케이블에 전력이 도통되지 않도록 한 상태에서 전력케이블의 저항값을 측정하여 단선여부를 확인하는 것을 구간을 이동하면서 순차적으로 실시하여 주므로 각 구간에 설치된 전력케이블의 단선여부를 보다 용이하고 신속하게 확인할 수 있고, 배선(매설)된 전력케이블을 손상시키지 않고 고장 여부를 측정할 수 있으므로 전력케이블을 보다 장기간사용할 수 있으며, 따라서 운용에 다른 보수비용을 현저하게 절감시킬 수 있게 된다.As described above, if the breaker built-in junction box according to the present invention is installed while being maintained at a predetermined interval in the middle of the power cable of the high-voltage distribution line, the breaker of each adjacent breaker-embedded junction box is turned off and power is supplied to the power cables in these sections. In order to prevent disconnection by checking the resistance value of the power cable while moving the sections, it is possible to check whether the power cable installed in each section is easily and quickly. Since the failure can be measured without damaging the buried power cable, the power cable can be used for a longer period of time, thereby significantly reducing other maintenance costs in operation.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020038781A KR20040003931A (en) | 2002-07-05 | 2002-07-05 | A Cable Connect Box and Hindrance Detect Method of Electric Cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020038781A KR20040003931A (en) | 2002-07-05 | 2002-07-05 | A Cable Connect Box and Hindrance Detect Method of Electric Cable |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2020020020192U Division KR200291146Y1 (en) | 2002-07-05 | 2002-07-05 | A Cable Connect Box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20040003931A true KR20040003931A (en) | 2004-01-13 |
Family
ID=37314895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020020038781A KR20040003931A (en) | 2002-07-05 | 2002-07-05 | A Cable Connect Box and Hindrance Detect Method of Electric Cable |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20040003931A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100769819B1 (en) * | 2006-06-19 | 2007-10-23 | 주식회사 케이티프리텔 | Arrester enclosure |
| CN103354343A (en) * | 2013-05-28 | 2013-10-16 | 环宇集团（南京）有限公司 | European cable branch box |
| CN110718890A (en) * | 2019-09-18 | 2020-01-21 | 安徽科技学院 | Electronic communication cable box and anti-aging cable thereof |
| KR20220124121A (en) * | 2022-08-23 | 2022-09-13 | (주)다성테크놀로지 | Power cut-off device safety system |
| KR102572602B1 (en) | 2022-09-06 | 2023-09-01 | (주)신아엔지니어링 | Magnetic force regenerative controller |
| KR102576724B1 (en) * | 2023-03-17 | 2023-09-12 | 홍정애 | Eco-friendly Disconnector Attached Cable Junction Box for Railway |
-
2002
- 2002-07-05 KR KR1020020038781A patent/KR20040003931A/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100769819B1 (en) * | 2006-06-19 | 2007-10-23 | 주식회사 케이티프리텔 | Arrester enclosure |
| CN103354343A (en) * | 2013-05-28 | 2013-10-16 | 环宇集团（南京）有限公司 | European cable branch box |
| CN110718890A (en) * | 2019-09-18 | 2020-01-21 | 安徽科技学院 | Electronic communication cable box and anti-aging cable thereof |
| KR20220124121A (en) * | 2022-08-23 | 2022-09-13 | (주)다성테크놀로지 | Power cut-off device safety system |
| KR102572602B1 (en) | 2022-09-06 | 2023-09-01 | (주)신아엔지니어링 | Magnetic force regenerative controller |
| KR102576724B1 (en) * | 2023-03-17 | 2023-09-12 | 홍정애 | Eco-friendly Disconnector Attached Cable Junction Box for Railway |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5515218A (en) | Ground fault circuit interrupter, circuit, circuit tester and method | |
| KR102147981B1 (en) | Automatic switchgear equipment | |
| US20200287364A1 (en) | 7-Way Crab Joint | |
| US20170338633A1 (en) | Quick connect and disconnect cable junction box | |
| AU2020247540A1 (en) | Open pen detection and shut down system | |
| KR100815166B1 (en) | Ground plate for electric pole | |
| KR100968588B1 (en) | Uninterrupted power supply bypass device for repairing underground power lines and equipments and method thereof | |
| Parise et al. | Electrical safety of street light systems | |
| KR20210144620A (en) | Gas Insulated swatchgear having embedded collecting panel for partial discharge | |
| KR20040003931A (en) | A Cable Connect Box and Hindrance Detect Method of Electric Cable | |
| ES2953847T3 (en) | Electrical sensor | |
| KR101698566B1 (en) | Connector for underground power distribution line | |
| KR200291146Y1 (en) | A Cable Connect Box | |
| KR20100029809A (en) | Uninterrupted power supply bypass device for repairing underground power lines and equipments and method thereof | |
| KR200314282Y1 (en) | A Cable Connect Box For Electric Cabl | |
| KR102277042B1 (en) | Low voltage distribution box of underground location type and method for operating thereof | |
| US5239441A (en) | Underground power line fault locating system | |
| KR102089769B1 (en) | Fault section detection device by connection point of the underground wiring | |
| KR101487901B1 (en) | Apparatus using detecting technology of faulted section for underground distribution line | |
| KR100207006B1 (en) | Protection device of molded transformer | |
| KR200219118Y1 (en) | Multi-connector for low voltage | |
| KR102535684B1 (en) | Lightning protection device for power distribution poles equipped with transformers | |
| D'Souza et al. | Conversion of 230 kV Switchyard to Gas-Insulated Substation in a Gas Plant | |
| KR101008234B1 (en) | Receive and change electricity equipment for special high-tension is ground formation | |
| CN211605938U (en) | Cable quick connect terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |