JP2004080926A - Phase modification equipment integrated type gas-blast circuitbreaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a phase modification equipment integrated type gas-blast circuitbreaker, capable of shortening a period for installing equipment at an installation site and which can do with a small installation space, and reduced in cost and superior in reliability. <P>SOLUTION: Phase modification equipment 2 is constituted by electrically connecting and integrating a power capacitor 3 and a series reactor. Individual cylindrical vessels 9 are connected to the phase modulation equipment 2 and placed on a counter 13. Breakers 8 are accommodated in the vessels 9, respectively. One-side ends of the breakers 8 are connected to the phase modulation equipment 2. Gas bushing 11 are attached to other-side ends of the breakers 8 and are connected to a power transmission cable 16. An operating unit 10 for driving the breakers 8 is arranged inside the counter 13. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a gas circuit breaker integrated with a phase adjustment facility and a gas circuit breaker.
[0002]
[Prior art]
As is well known, phase adjustment equipment has a phase-advancing capacitor that supplies phase-leading power under heavy load and a shunt reactor that supplies phase-lagging power under light load, and performs voltage adjustment and reduces power loss. Things.
[0003]
Switches used to open and close these phase adjustment equipment in the event of a failure include:
1) The inrush current at the time of closing is large and the frequency is high.
2) High inter-electrode recovery voltage.
3) Open / close frequency is high.
Gas circuit breakers are widely used as suitable for use conditions such as.
[0004]
FIG. 3 (A) is a plan view showing the relationship between the conventional phase adjustment equipment 2 and the gas circuit breaker 7,
FIG. 3B is a side view of the same.
[0005]
As shown in FIG. 3, the power capacitor 3 and the series reactor 4 are electrically connected to each other to form the phase adjusting device 2 integrally, and are mounted on the gantry 6. A bushing 5 for three phases is attached to the upper part of the power capacitor 3 of the phase adjustment equipment 2.
[0006]
Each of the single-phase shutoff portions 8 is housed in a cylindrical container 9 to form a gas breaker 7, and the gas breakers 7 for three phases are arranged on the gantry 12 at equal intervals. An operating device 10 for driving the three-phase gas circuit breakers 7 is attached to the gantry 12. Two gas bushings 11 are attached to the gas circuit breaker 7, and one and the other of the circuit breakers 8 are electrically connected to the gas bushings 11, respectively, to form a gas circuit breaker unit 19.
[0007]
The gas bushing 11 connected to one side of the cutoff unit 8 is connected to the bushing 5 attached to the upper part of the power capacitor 3 of the phase adjustment facility 2 by an overhead wire 14. In addition, the gas bushing 11 connected to the other side of the blocking unit 8 is connected to the transmission line 16.
[0008]
[Problems to be solved by the invention]
In the above-mentioned conventional equipment, there is a problem that the air insulation distance between the ground and the phase needs to be sufficiently long, so that the installation space of the entire equipment becomes large, and three bushings 5 attached to the phase adjustment equipment 2 are required. In addition, the number of gas bushings 11 attached to the gas circuit breaker 7 becomes six, and a total of nine bushings are required for one equipment, so that there is a problem that the cost is increased.
[0009]
Further, in the case of such conventional equipment, there is a problem in that the phase adjustment equipment and the gas circuit breaker unit must be individually transported when transporting the equipment to the installation location, and there is a problem that the transportation cost is increased.
[0010]
In addition, in order to ensure safety, the installation work of the phase adjustment equipment and the gas circuit breaker unit is separately performed, and then test adjustment is performed. For this reason, the installation work period and the test adjustment period are lengthened. In addition, since the phase-locking equipment and the gas circuit breaker unit were connected by an overhead wire after the installation work and the test adjustment of the gas circuit breaker unit were completed, there was a problem that a total construction period was prolonged.
[0011]
The present invention, by integrally configuring the phase adjustment equipment and the gas circuit breaker, can reduce the installation space of the entire device, can be transported in a lump, can reduce the transportation cost, and,
It is an object of the present invention to provide a gas circuit breaker integrated with a phase adjustment facility that can shorten the installation work period and the test adjustment period.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 includes a phase adjustment facility, which is housed in a container coupled to the phase adjustment facility, one of which is connected to the phase adjustment facility, and the other is connected to a gas bushing. And a gantry on which the phase adjustment equipment and the container are mounted, and an operating device for driving the gantry are housed in the gantry.
[0013]
In addition, the invention according to claim 2, a phase adjustment facility, housed in a container coupled to the phase adjustment facility, one of which is connected to the phase adjustment facility, the other is connected to a cable head, a blocking unit, The pedestal on which the phase adjustment equipment and the container are mounted, and an operating device for driving the blocking unit are housed in the pedestal.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
A first embodiment of the present invention will be described.
FIG. 1A is a plan view of a gas circuit breaker 1 integrated with a phase adjustment facility according to the embodiment, and FIG. 1B is a side view of the same.
[0015]
As shown in FIG. 1, the gas circuit breaker 7 is configured by housing the shut-off portions 8 in individual cylindrical containers 9 respectively. Then, the gas circuit breakers 7 are connected at equal intervals to the phase adjustment equipment 2 in which the power capacitor 3 and the series reactor 4 are integrally formed, and are mounted on the gantry 13.
Then, the operating device 10 for driving the blocking unit 8 is disposed in the gantry 13. When installing the gas circuit breaker 1 integrated with the phase adjustment equipment, the periphery of the gantry 13 is covered with a door or the like so that rainwater or dust can be prevented from entering. When installed indoors, the door around the gantry 13 may or may not be provided.
[0016]
One of the shut-off portions 8 housed in the container 9 of the gas circuit breaker 7 is connected to the phase adjusting equipment 2 integrally configured with the power capacitor 3 and the series reactor 4, and the gas bushing 11 is connected to the gas circuit breaker 7. Then, the other end of the cutoff section 8 is connected to the transmission line 16 via the gas bushing 11.
[0017]
According to the gas phase breaker integrated with a gas circuit breaker according to the present embodiment, since the phase control facility 2 and the gas circuit breaker 7 are configured to be integrated, the installation space can be reduced, and these can be separately provided. Since it is no longer necessary to transport the products, they can be transported collectively by a trailer or the like.
[0018]
In addition, since the phase adjustment equipment 2 and the gas circuit breaker 7 are configured to be integrated, there is no need to separately install the phase breaker 2 and the gas circuit breaker 7, and the installation period can be shortened. In addition, the overhead wire 14 connecting the phase adjusting device 2 and the gas circuit breaker 7 and the bushing 5 of the phase adjusting device 2 can be eliminated, and the number of gas bushings 11 of the gas circuit breaker 7 can be reduced to three. Cost can be reduced. In addition, the number of connection points such as flanges to which a bushing is conventionally attached is reduced, so that accidents such as gas leakage can be reduced, and the reliability of the entire apparatus is improved.
[0019]
In addition, by covering the periphery of the gas circuit breaker 7 with the decorative plate 15, the gas circuit breaker 1 integrated with the phase adjusting equipment can be configured as a single box, so that the appearance of the entire apparatus can be improved.
[0020]
Further, the container 9 for accommodating the shut-off portion 8 of the gas circuit breaker 7 may be formed in a square shape capable of collectively storing the three-phase shut-off portions 8. In this case, the decorative plate 15 can be omitted. However, the gas circuit breaker 7 may be covered with a decorative plate 15 in order to achieve harmony with the phase adjustment equipment 2.
[0021]
Next, a second embodiment will be described.
FIG. 2A is a plan view of a gas circuit breaker 1 integrated with a phase adjustment facility according to a second embodiment of the present invention, and FIG. 2B is a side view of the same. 1A and 1B are denoted by the same reference numerals, and description thereof will be omitted. Only different portions will be described.
[0022]
That is, in the gas circuit breaker integrated with the phase adjusting equipment according to the present embodiment, the cable head 17 is connected to the gas circuit breaker 7, and the power cable 18 is connected to the other of the circuit breaker 8 via the cable head 17. is there.
[0023]
According to the gas circuit breaker integrated with the phase adjusting equipment according to the present embodiment, one of the shut-off portions 8 housed in the container 9 of the gas circuit breaker 7 is connected to the power capacitor 3 of the phase adjusting equipment 2, The cable head 17 is connected to the gas circuit breaker 7, and the other end of the breaking unit 8 is connected to the power cable 18 via the cable head 17. With this configuration, the degree of freedom in connection with other devices is improved, and the degree of freedom in layout is improved.
[0024]
As the embodiment of the present invention, the phase adjustment equipment has been described with respect to the phase advance capacitor including the power capacitor and the series reactor. However, it goes without saying that a shunt reactor may be applied as the phase adjustment equipment.
[0025]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a highly reliable gas circuit breaker with integrated phase control equipment, which has a short installation period, requires little installation space, is low in cost, and has high reliability.
[Brief description of the drawings]
FIG. 1 is a plan view and a side view of a gas circuit breaker integrated with a phase adjusting facility according to a first embodiment of the present invention.
FIG. 2 is a plan view and a side view of a gas circuit breaker integrated with a phase adjusting facility according to a second embodiment of the present invention.
FIG. 3 is a plan view and a side view of a conventional facility.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Gas breaker integrated with phase adjusting equipment 2 ... Phase adjusting equipment 3 ... Power condenser 4 ... Serial reactor 5 ... Bushing 6 ... Stand 7 ... Gas circuit breaker 8 ... Interceptor 9 ... Container 10 ... Operator 11 ... Gas bushing 12 ... stand 13 ... stand 14 ... overhead line 15 ... decorative board 16 ... transmission line 17 ... cable head 18 ... power cable 19 ... gas circuit breaker unit

Claims (2)

Phase adjustment equipment,
A shut-off unit housed in a container coupled to the phase adjustment equipment, one of which is connected to the phase adjustment equipment, and the other is connected to a gas bushing,
A frame on which the phase adjustment equipment and the container are mounted,
An operation device for driving the shut-off unit is housed in the gantry. Phase adjustment equipment,
Housed in a container coupled to the phase adjustment equipment, one connected to the phase adjustment equipment,
A breaking part, the other of which is connected to the cable head,
A frame on which the phase adjustment equipment and the container are mounted,
An operation device for driving the shut-off unit is housed in the gantry.

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