JPS59201330A - Power switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power switching device configured by disposing a disconnector and a circuit breaker, which are configured independently from each other, adjacent to each other and electrically connected to each other.

A conventional power JTI switchgear of this type is shown in FIG. In the figure, (1) is the pedestal, (2) and (3) are the pedestals (
1) a support insulator disposed on (4) a fixed contact having a terminal (4a) and supported by the support insulator (2); (5);
(6) is a fixed contact (4) and a movable eJJ contact that can be moved into and out of contact with the fixed contact (4).
) is a drive mechanism supported by the support insulator (3) and mechanically connected to the movable contact (5). (7) is arranged on the pedestal at a predetermined distance from the support insulator (3), and is a driving source (
A drive insulator driven by a drive mechanism (not shown);
6) to open and close the J contactor (5). Note that the -drive mechanism (6) and the drive insulator (7) constitute a disconnector operating mechanism (8). (9) is a support insulator, (1
0) is supported by a supporting insulator (9) at the breaking part of an insulator type gas breaker having terminals (10a) and (10b). (11) is the receiving '1 wire connected to the terminal (4a), (1
2) is the connection line connecting the movable contactor (5) and the terminal (10b), (13) is the feeder line connected to the terminal (10'b), and (14) is the operation inside the support insulator (9). Rod (not shown)
This is a breaker drive source that performs closing/cutting driving of the breaker (10) via the breaker.

A conventional power switchgear consisting of a disconnector and a circuit breaker that are electrically connected to each other is constructed as described above, and the installation work is performed using a power ff (switchgear is generally large and Due to the fact that it requires several people to install it,
The stand on the disconnector side (1), the breaker operating mechanism of the breaker (
14), and installation work such as the support insulator (9), connection wire (12), drive mechanism (6), and terminal (10a
) on the disconnect switch side to facilitate connection work with the disconnector (
1), support insulator (3), drive mechanism (6) and breaker side operating mechanism (14), support insulator (9), breaker part (10)
It was common practice to provide sufficient space between the two. By the way, with the spread of gas insulated switchgear configured by housing a disconnector and a breaker in a common gas tank, the (1) installation area, which is the advantage of gas insulated switchgear, has been reduced as mentioned above. There has also begun to be a demand for independent disconnectors and switchgears composed of breaker.In order to meet this requirement, the disconnector side and breaker side of the switchgear shown in Fig. 1 have been placed close together. If the spatial distance between the disconnection 5411 and the breaker side is shortened, the grounding mine,
) and the high voltage terminal (10b), and the distance between the disconnector drive mechanism (6), which has a different potential when the breaker NI (10) is cut off, and the breaker terminal (10a). lI
V: M# becomes short in both cases, causing the problem that space insulation mjNN cannot be secured sufficiently, so in reality, the distance between the disconnector sides cannot be made too short, and a fairly wide space is recommended. .

This invention was made in view of the above circumstances, and in the power switchgear constituted by a disconnector and a circuit breaker which are configured independently from each other as described above, a supporting insulator of one of the disconnectors and a breaker are provided. The structure is such that the support insulator of the breaker is common, and (5) the tip of the other support insulator of the disconnector, the drive mechanism of the disconnector, and the tip of the common support insulator are connected in a substantially vertical direction. By adopting a configuration with the same 1n, the installation area of the power switchgear can be reduced, and the workability of installation work, connection work, etc. can be improved. Furthermore, a sufficient space insulation distance can be secured, and the structure can be simplified. It is advantageous and inexpensive to transport by ton.
It is an object of the present invention to provide a power switchgear including a disconnector and a breaker configured independently of each other.

Examples of the present invention will be described below. FIG. 2 shows an embodiment of the present invention. In FIG. 2, (2) is a vertical support insulator on the disconnector side, (4) is a U-shaped fixed contact of the disconnector, and the terminal (4a) is a U-shaped fixed contact of the disconnector. and is attached to the upper surface of the support insulator (2). (5) is a rod-shaped movable contact of the disconnector, which pivots in the vertical direction to the position shown by the dashed line, and is inserted into the fixed contact (4) while twisting around the axis and released by twisting. Ru. (6) is a drive mechanism which has the function of causing the movable contact (5) to pivot and twist in the direction perpendicular to the mold (6) in response to the rotational movement of the drive insulator (7); <91J insulator (7) is driven by the town power source (not shown)
Driven by In addition, the above-mentioned motive source, I2 dynamic insulator (7)
As the drive mechanism (6), a conventionally known one can be used as is, so illustration and explanation of its detailed structure will be omitted. (7a
) is a metal support arm (8) that rotatably supports the driving insulator (7), and is a disconnector operating tatami structure composed of a driving gate structure (6) and a moving insulator (7); (9) is a vertical hollow common support insulator, (1o) is the breaking part of the vertical device of the insulator type gas breaker, (10a) is the upper terminal of the insulator type gas breaker,
(10b) is the lower terminal of the above-mentioned circuit breaker, and the flat conductive TIf located horizontally at 1°C on the side thereof, and the conductive metal connecting plate (10
c). The drive mechanism (6) of the disconnector is fixed on the connection jFi (10c) with a bolt or the like. Note that the connection plate (10c) is connected to the drive@structure (6
), and may be detachably attached to the lower terminal (iob) with bolts, etc.;
and the lower terminal (lob) may be detachably attached with bolts. (11) is the disconnector terminal (4a
), and (13) is the power supply line connected to the upper terminal (XOa) of the breaker, and when both the breaker and the disconnector are turned on, the power is:
This power supply @ (13) is connected to the upper terminal (10b), the vertically arranged movable and fixed contacts (not shown) in the breaker (10), the lower terminal (10a), and the connection plate (10c).
, disconnector drive mechanism (6), disconnector movable contact (5), fixed contact (4), disconnector terminal (4a), power receiving line (11)
) to a power load (not shown).

(14) is a vertically arranged operating rod (
a breaker drive source (15) that performs closing/cutting driving of the movable contact in the breaker section (10) via the breaker (not shown);
is an adapter for adjusting the height of the fixed contact (4) of the disconnector, and -h is an adapter for adjusting the height of the fixed contact (4) of the disconnector;
is fixed with bolts etc. (16) is a common pedestal on which a flat horizontal upper surface (16a) is formed;
16a), the disconnector support insulator (2) is fixed vertically on the adapter (15) with bolts, etc., and the common support insulator (9) is also fixed vertically with bolts, etc. The breaker drive source (14) is also fixed with bolts or the like. Furthermore, the above-mentioned disconnector support insulator (2
), the upper end of the drive insulator (7), and the upper end of the common support insulator (9) are arranged so that they are located on substantially the same horizontal plane and on the same branch line, and the disconnector The movable contactor (5) is arranged to be almost horizontal in the closed state, and the wide open angle θ of the movable contactor (5) with respect to the horizontal plane is 90° as shown by the dashed line.
It is made smaller to ensure a sufficient spatial insulation distance from the breaker upper terminal (10a). The drive mechanism of the above disconnector (
6) and the movable contact (5) are the connection plate (100),
The lower terminal (10b), the drive insulator (7), and the support arm (
It is supported at the upper and lower ends of the support insulator (9) via the support insulator (9). The support arm (7a) is fixed to the bottom of the common support insulator (5) (metal part) with bolts, etc., but the breaker drive source (14) eK: Hole 1-
etc. (9). Furthermore, the opening/closing direction of the movable contactor (not shown) of the breaker and the moving direction of its operating rod (not shown) are both vertical, and the common support insulator (9
) and the breaker part (10) are made concentric, thereby preventing the force of the breaker from acting on the common support insulator (9) as a bending force (horizontal force) when the breaker turns on and off. The power switchgear shown in Fig. 2 not only electrically connects the disconnector drive mechanism (6) and the lower terminal (1ob) of the circuit breaker, but also mechanically fits and supports the circuit breaker (10). Since the disconnector drive mechanism (6) is supported by the common support insulator (9), the disconnector drive mechanism (6) is more flexible than the conventional power switchgear shown in FIG. A sufficient spatial insulation distance can be secured between the drive mechanism (6) of the circuit breaker and the upper terminal (10a) of the circuit breaker, and therefore the circuit breaker can be placed sufficiently close to the circuit breaker. That is, the installation area can be made sufficiently small. In addition, since the disconnector support insulator (3) of the conventional one shown in Figure 1 is no longer required, the installation area can be further reduced, and the installation work is also easier since the disconnector support insulator (3) (10) is no longer required. become. Furthermore, unlike the conventional circuit breaker shown in FIG. 1, there is no need to connect the breaker to the breaker using a connecting wire (12), making the connection work easier. Furthermore, with the conventional configuration shown in Figure 1, even if the installation location of the disconnector and the installation location of the breaker are different, there is no problem because the contact M@(13) is usually flexible. However, in the embodiment shown in Fig. 2, if the above heights are different, unreasonable force may be generated on the mechanical connection and it may be difficult to close the disconnector. If installed on a common pedestal, vertically align the tip of the disconnector support insulator (2), the disconnector drive mechanism (6), and the tip of the common support insulator (9) on the breaker side. This can be easily done regardless of the unevenness of the installation location, and therefore the fixed and movable contact of the disconnector (4) t (5
) or the alignment between the disconnector drive mechanism (6) and the connection plate (IOQ).

FIG. 3 is a diagram showing another embodiment of the present invention, in which a driving insulator (7
) is supported on a common pedestal (16) via a height adjustment adapter (7a).

FIG. 4 shows still another embodiment of the present invention, in which the common frame is a trailer (16'), (17) is a low cubicle, (18) is a transformer, and (19) is a transformer. King °
It is a Sakura bushing, and a power supply line (13) is connected to the tip. In each of the embodiments shown in FIGS. 2 to 4, only one phase is shown, but in reality, three phases of the power switchgear having the same configuration are arranged in parallel in the depth direction of the figures.

The present invention arranges a disconnector and a circuit breaker configured independently from each other as described above and electrically connects them, and also connects a support insulator of the disconnector, a drive insulator of the disconnector, and a support insulator of the breaker. In a power switch which is arranged vertically and has a configuration in which the disconnector is supported at the tip of the support insulator of the disconnector, and the breaker is supported at the tip of the support insulator of the breaker, one of the support insulators of the disconnector and The structure is such that the support insulator of the breaker is shared, and the tip of the other support insulator of the disconnector, the drive mechanism of the disconnector, and the tip of the common support insulator are located approximately at the same vertical position. Because of this configuration, the installation area of the power switchgear can be reduced, and workability such as installation work and connection work is improved, and the necessary spatial insulation distance between the disconnectors can be reduced. It is possible to obtain a power switchgear that can be sufficiently secured, is suitable for structural parts, is convenient for transportation, and is inexpensive, and is composed of a disconnector and a circuit breaker that are configured independently of each other.

[Brief explanation of drawings]

FIG. 1 is a side view showing a conventional electric power switchgear, FIG. 2 is a side view showing an embodiment of the power switchgear according to the present invention, and FIG. 3 is a side view showing another embodiment of the present invention. FIG. 4 is a side view showing still another embodiment of the present invention. In the figure, (2) is a disconnector support insulator, (4) is a fixed contact of the disconnector, (4a) is a terminal, (5) is a movable contact of the disconnector, (6) is a drive mechanism of the disconnector, (7) is rejected (13
) Driving insulator for the road equipment, (9) is the common support insulator, (10) is the breaking part of the breaker, (15) and (7a) are adapters for height adjustment, (16) is the pedestal, (16') is a trailer. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent: Patent attorney: Masuo Oiwa (17Ls Figure 2: Mr. Commissioner of the Japan Patent Office 1; Indication of the case: Japanese Patent Application No. 1983-76707 2: Name of the invention: Power switchgear 3; Person making the amendment: Representative: Jinhachibe Katayama) 5. Subject of amendment (1) Column for detailed explanation of the invention in the specification (2) Column for brief explanation of drawings in the specification 6. Contents of amendment (1) Line 3 of page 4 of the specification (10b) J is corrected as “Terminal (10a) J.” (2) Page 4, line 14 [Drive mechanism (6) and terminal (
10a) J is "movable contactor (5) and terminal (10b)
Correct it with J. (3) In the second line of page 5, ``- (1) installation'' is corrected to ``one installation.'' (4) On page 5, line 10, "abnormal potential" is corrected to "abnormal potential." (5) On page 7, line 7, insert 1 next to ``Support arm''. (6) Page 8, lines 5 to 10 [This feeder line (13)
From -1111 power receiving line (11) J [this power receiving line (11
) to the terminal (4a) of the disconnector, the fixed contact (4),
Disconnector movable contact (5), disconnector drive? A structure (6), connection plate (IOQ), lower terminal (10b), breaking part (10
) vertically arranged movable and fixed contacts (not shown),
Correct the upper terminal (10a) and feeder line (13) J. (7) On page 9, line 18, "Common support insulator (5)" is corrected to "Common support insulator (9)." (8) Page 11, line 7, "Correct the connection line (13) J to 1 connection line (12) J. (9) Page 14, line 2 r(15) and (7a)". r
(7a) is the support arm, and (15) is corrected. that's all

Claims (1)

[Claims] 1. A power switchgear configured by disposing a disconnector and a circuit breaker, which are configured independently of each other, adjacent to each other and electrically connecting them, which is attached to a pedestal and has the above-mentioned breaker at its tip. A disconnector support insulator having a fixed contact and a terminal of the disconnector, and a common support insulator attached to a pedestal and having a cutting section of the circuit breaker attached to its tip end are arranged substantially vertically at a predetermined distance, respectively; The common support insulator and the disconnector support insulator are connected to a substantially perpendicular drive insulator and a drive mechanism that opens and closes the disconnector movable contact to the fixed contact of the disconnector in response to the rotation of the drive insulator. and the drive mechanism of the disconnector is connected to and supported by the tip of the common support insulator, the tip of the support insulator of the disconnector, the drive mechanism of the disconnector, and the tip of the common support insulator. A power switchgear characterized in that the and are located at approximately the same vertical position. 2. The electric power device according to claim 1, characterized in that the end of the drive insulator of the disconnector on the opposite side to the drive mechanism is connected to the end of the common support insulator on the side opposite to the breaker part. Switchgear. 3. The power switchgear according to claim 1, wherein the end of the drive insulator of the disconnector on the side opposite to the drive mechanism is attached to a pedestal. 4. The end of the drive insulator of the disconnector on the opposite side from the drive mechanism;
2. The power switchgear according to claim 1, wherein an end of the supporting insulator of the disconnector on the opposite side from the disconnector fixed contact is attached to a common frame via an adapter. 5. The power switchgear according to claim 2 or 3, wherein the support insulator of the disconnector and the common support insulator are mounted on a common pedestal. 6. The power switchgear according to claim 5, wherein the common frame is a trailer.