JPS5849081B2 - electrical equipment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical equipment device installed between a generator and a main transformer in a pumped storage power plant or the like.

In recent years, as the demand for electricity has increased, in order to ensure a highly efficient and stable power supply, there has been a trend toward ultra-high voltage transmission and voltage, and at the same time, the construction of large-capacity pumped storage power plants.

In particular, when constructing underground power plants, there is a tendency to make the buildings smaller and reduce the amount of earth and sand excavated in order to save on construction costs.

Therefore, if electrical equipment such as a circuit breaker for a large-capacity generator main circuit, a phase separation bus, and a phase conversion disconnector are arranged on a plane, a large installation area is required, which is undesirable.

This invention was made in view of these points,
It is an object of the present invention to provide an electrical equipment device that requires less floor space for installation and has high efficiency in equipment maintenance and inspection work.

An embodiment of the present invention shown in FIGS. 1 and 2 will be described below.

Figure 1 shows the electrical connection diagram of the lightning equipment, where 1 is a bus bar covered with a mini-flux type jacket, 2 is a breaker for the main circuit of a large-capacity generator, and 33 to 3e are for pumped storage power plants. This is a disconnector for inverting the main circuit of the main circuit, and inverting t-circuits 3a, 3b, 3d, and 3e are provided for two of the phases.

Figure 1 shows when the generator motor is operated as a pump, and current is applied from the main transformer side and the disconnectors 3b, 3c, and 3d are closed, and the generator is energized from the upper stage as A, B, and 0 phases as shown in the diagram. .

Conversely, when using a generator motor for power generation, B, A, C! from the top as shown in the diagram. As a result, the disconnectors 3a, 3c, and 3e are closed and output to the main transformer.

FIG. 2 is a three-dimensional view showing the equipment configuration of the present invention, and FIGS. 3 to 7 show each part in FIG. 2, with figure a being a plan view and figure b being a side view.

In the figure, reference numeral 4 denotes a breaker section, in which the breaker is housed as shown in FIG. 5a is an outer cover having a mounting collar 5b on its upper surface in a direction perpendicular to the mounting flange 5a, and is of a mini-flux type like the phase separation bus bar.

Reference numeral 6 denotes an operation box housing the operation mechanism of the circuit breaker housed in the jacket 5, and 7 denotes a flexible connection shown in FIG. 5 for connecting the jacket 5 and the phase separation bus bar 9' + wrinkle. As shown in FIG. 6, the shunt 8 is a cylindrical bus bar housing housing a phase separation bus bar in the center, and 8a in FIG. 6 is a bolt through hole.

Reference numeral 9 denotes a phase reversal disconnector part, in which a disconnector is housed.

10 is provided with a mounting flange 10a on one side and a mounting collar 10b on its lower surface in a direction perpendicular to the flange 10a, as shown in FIG. However, in order to connect a switching disconnector for phase reversal, a disconnector storage jacket 10 for two of the three phases is used.
A connecting flange 10d of the connecting busbar storage jacket 13 is provided at c.

11 is an operation box that accommodates a disconnecting mechanism attached to the side surface of the outer cover 10; 14 is a blind cover of a manhole for inspecting the disconnecting device;
Reference numeral 12 indicates a pedestal for supporting a disconnector for three-dimensionally arranging the disconnector from the output port 5b of the circuit breaker.

Next, the arrangement of such a device configuration will be described.

First, the outer sheath 5 housing the breaker is placed at the location where the phase separation bus pulled out from the lower part of the generator is installed, and the outer sheath 8 housing the connection bus is vertically connected to the outer sheath 8 via the springs 1 and 7 to form a mount. 1
A connection port 10 of an outer cover 10 that is fixed on 2 and houses a disconnector.
b via a flexible shunt γ.

Furthermore, in order to install a switching disconnector, two of the three phases were installed on two floors via a pedestal 12 above the disconnector, and the connection busbar was housed outside to make the connection shown in Figure 1. Connect the cover 13.

As described above, this invention has a three-dimensional arrangement in which the intermediate connection bus bar is arranged vertically, the breaker parts and disconnectors are arranged in a stairway shape at both ends, and the phase inverting disconnectors are arranged in two stages. As a result, compared to conventional products, there is less installation space, the installation area is reduced, and construction costs are reduced.
Even if circuit breakers and disconnectors are placed centrally, equipment maintenance,
This has various effects such as ensuring a sufficient work area for inspection and making work more efficient.

[Brief explanation of the drawing]

Figure 1 is a wiring diagram showing electrical equipment, Figures 2 and 3 are
Figures 1 to 7 are a configuration diagram and detailed diagrams of each part showing an embodiment of the present invention. In the figure, 5 is a jacket, 6 is an operation box, 7 is an i'iT flexible connection shaft, 8 is a bus bar jacket, 10 is a jacket, 12 is a pedestal, and 13 is a connection bus bar housing jacket. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1 The circuit breaker that constitutes the generator main circuit that connects the generator and the main transformer, the phase inversion disconnector installed in two of the three phases, the disconnector and busbar installed in the remaining one phase. In an electrical equipment device, a breaker jacket, a disconnector jacket, and a busbar jacket are provided to house the breaker, the disconnector, and the bus bar, respectively, and the main transformer side of the breaker jacket and the disconnector jacket are provided. the generator side of the sheathing is connected to the generator side of the sheath via the vertically arranged bus bar sheath, and the breaker sheath and the disconnector sheath arranged in two stages are arranged horizontally in a stepped manner,
An electrical equipment device characterized in that an inspection space is formed in the upper part of the breaker jacket.