JPS584183Y2 - Denryoku capacitor Yochiyokretsu reactor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to power condenser equipment that aims to reduce noise.

In recent years, power capacitor equipment has often been installed close to people's residences due to restrictions on the site area of substations.

On the other hand, particularly strict noise regulations have recently been imposed due to noise pollution problems, and series reactors in this type of equipment are subject to these noise regulations.

However, if noise reduction means are applied to the series reactor itself, the cost will naturally be high.

The present invention eliminates this drawback, and by changing the equipment layout in conventional power capacitor equipment, the series reactor is separated from the boundary line of the substation, thereby reducing the influence of noise on the outside.

FIG. 1 shows the configuration of one phase of a conventional power capacitor installation, particularly an installation of this type for a 66 KV circuit or above.

In the figure, 1 is a front-stage capacitor group, 2 is a rear-stage capacitor group, and one end of the capacitors of each group, the capacitor container, and the pedestal 3 are at the same potential, and the series reactor 4 has only its container at the same potential as the pedestal 3. It has become.

The series reactor 4 has one end connected to the neutral point, and the other end connected to the other end of the rear stage capacitor group 2.
Further, the pedestal 3 is insulated from the ground by an insulator 5.

In this case, the power receiving side of the pre-stage capacitor group 1 is usually provided on the opposite side of the boundary line 6 from the substation to the outside world, as shown in FIG. 1, and the series reactor 4 is located close to the boundary line 6.

Therefore, the influence of the noise generated from the series reactor 4 on the outside is large, and therefore it is necessary to reduce the noise of the series reactor 4 itself.However, it is possible to reduce the magnetic flux density of the series reactor 4 or increase the number of turns. According to this, it becomes large and expensive, and it is also possible to provide a soundproof wall, but this is extremely difficult because it is installed on a frame.

In contrast, the present invention has a configuration shown in FIG. 2, in which the series reactor 4 is disposed between the front-stage capacitor group 1 and the rear-stage capacitor group 2, and one capacitor group of the front-stage and rear-stage capacitor groups, For example, the rear stage capacitor group 2 is provided on the boundary line 6 side.

One end of both capacitor groups 1 and 2 is set to the same potential as pedestal 3 through a capacitor container, and both capacitor groups 1 and 2 are connected in series via pedestal 3.

As a result, the series reactor 4 is separated from the boundary line 6 of the substation, so the influence of noise from the series reactor on the outside is greatly reduced, and even when both the container groups 1 and 2 are connected in series, the mount 3, so no special wiring is required for connection.

Furthermore, since the rear-stage capacitor group 2 acts as a shield against the noise generated from the series reactor 4, it can be expected that the influence of the noise on the outside will be further reduced.

In this way, according to the present invention, by arranging the series reactor between the front-stage capacitor group and the rear-stage capacitor group, it is possible to eliminate the need for special wiring without applying any noise reduction measures to the series reactor itself. First, by simply considering the arrangement on the pedestal, the influence of noise on the outside can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional arrangement of power capacitor equipment, and FIG. 2 is a side view showing an arrangement according to an embodiment of the present invention. 1: Front stage capacitor group, 2: Back stage capacitor group, 3:
Frame, 4: Series reactor, 5: Insulator, 6: Boundary line.

Claims (1)

[Scope of utility model registration request] A capacitor installed on a stand insulated from the earth is divided into a front stage capacitor group and a rear stage capacitor group, and one capacitor group is arranged so as to be located on the boundary line side,
A series reactor is arranged to be located between the two capacitor groups and separated from the boundary line, and the l ends of both capacitor groups are set to the same potential as the pedestal via the capacitor container, and both capacitor groups are connected to the pedestal. connected in series through
A power capacitor equipment characterized in that the above-mentioned series reactor is connected to the neutral point side.