CN107196225A - A kind of high-voltage ring main unit of small size - Google Patents

Abstract

The invention relates to a small-sized high-voltage ring network cabinet, which includes a switch cabinet PT interval, a switch cabinet outlet interval and a manhole arranged in a cement shell. A bracket is installed in the cement shell above the manhole. The left side below the bracket is The side is the cable channel, and the upper surface of the bracket is installed with a load switch cabinet. The upper port of the load switch cabinet is connected to the outlet interval through the cable through the cable channel, and the lower port of the load switch cabinet is connected with the station PT through the cable. The station is installed in the cement shell above the load switch cabinet with PT. The present invention is a small-volume high-voltage ring network cabinet. On the premise of not changing the size of the foundation, the opening and closing station adds a PT cabinet, and at the same time retains a manhole, and also installs a load switch cabinet at the front end of the PT. It meets the needs of customers and improves the efficiency of transformation construction, so it is very suitable for popularization and application in the automation transformation project of opening and closing stations.

Description

A small-sized high-voltage ring network cabinet

technical field

The invention relates to the technical field of electric equipment, in particular to a small-volume high-voltage ring network cabinet.

Background technique

The high-voltage ring network cabinet is to improve the reliability of power supply, so that users can obtain power from two directions, and usually connect the power supply network into a ring. This power supply method is referred to as the ring network power supply. In the AC 10KV power distribution system such as ports and high-rise buildings, due to the small load capacity, the high-voltage circuit is usually controlled by a load switch or a vacuum contactor, and is equipped with a high-voltage fuse for protection. The system is usually powered by a ring network, and the high-voltage switchgear used is generally called a ring network cabinet.

Ordinary switching station includes switchgear PT interval, switchgear outlet interval and manhole, these three are combined and installed in the cement shell to become an opening and closing station, the main bus bar of the PT cabinet is connected to the main bus bar of the switch outlet interval to make it work. When the site is tense, the original equipment does not have PT cabinets, and there is only one reserved manhole. In the project of automatic transformation of the opening and closing station, due to the site terrain, the foundation cannot be expanded, but at this time the user needs to install PT, and A load switch cabinet should be installed at the front end of the PT to facilitate maintenance, and at the same time, manholes should be reserved, which increases the difficulty of construction.

Contents of the invention

The purpose of the present invention is to make up for the deficiencies of the prior art and provide a small-volume high-voltage ring main unit that can meet the needs of customers.

The purpose of the present invention is achieved by the following technical means:

A small-sized high-voltage ring network cabinet, including a cement shell, a switch cabinet PT interval, a switch cabinet outlet interval, and a manhole. The cement shell includes a shell and a cabinet door. The cabinet door is installed on the shell. The switch cabinet PT interval, switch The cabinet outgoing line interval and the manhole are all set in the shell of the cement shell, which is characterized in that: a bracket is installed in the cement shell shell above the manhole, the left side below the bracket is the cable channel, and the load switch is installed on the upper surface of the bracket Cabinet, the upper port of the load switch cabinet is connected to the outlet interval through the cable channel, the lower port of the load switch cabinet is connected with the station PT through the cable, and the station PT is installed on the cement shell above the load switch cabinet inside the shell.

Moreover, the bracket is welded by angle steel, and it is composed of a top plate and outriggers, the top plate is installed on the outriggers, the outriggers are installed on the bottom plate of the cement shell, and the load switch cabinet is installed on the top plate. hole.

Advantage and positive effect of the present invention are:

1. The present invention makes use of the original manhole position to make a bracket, installs a load switch cabinet on the bracket, and sets a station PT in the cement shell above the load switch cabinet, so that without changing the size of the foundation, With the addition of PT and load switch cabinet, the PT can be inspected and repaired without powering off the switching station, while the manhole is retained.

2. The present invention rationally plans the space in the switching station, rationalizes and standardizes the installation positions of various electrical components, thereby improving the space utilization rate and reducing the difficulty of construction and transformation.

3. The present invention is a small-volume high-voltage ring network cabinet with reasonable design, simple improvement and strong practicability. On the premise of not changing the size of the foundation, the opening and closing station adds a PT cabinet while retaining the manhole. A load switch cabinet is also installed at the front end of the PT to realize the maintenance of the PT without power failure, which meets the needs of customers, improves the construction efficiency of the transformation and reduces the construction cost, and is very suitable for popularization and application in the automation transformation project of the switching station .

Description of drawings

Fig. 1 is the internal front view of the present invention;

Fig. 2 is a side view of Fig. 1 (only the support, load switch cabinet and station PT part are shown).

detailed description

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.

A small-sized high-voltage ring network cabinet, including a cement shell, a switch cabinet PT interval, a switch cabinet outlet interval, and a manhole. The cement shell includes a shell and a cabinet door. The cabinet door is installed on the shell. The switch cabinet PT interval, switch Cabinet outlet intervals and manholes are set in the shell of the cement shell.

The innovation of the present invention is that a bracket 6 is installed in the cement shell 1 above the manhole 7, the bracket is welded by angle steel, and it is composed of a top plate and legs, the top plate is installed on the legs, and the legs are installed On the bottom plate of the cement shell shell. The left side below the support is the cable channel, the upper surface of the support (ie the upper surface of the top plate) load switch cabinet 5 is installed, and the bottom of the top plate is a manhole. The upper port of the load switch cabinet is connected to the outlet interval 9 through the cable 8 through the top plate through hole 10 and the cable channel, and the lower port of the load switch cabinet is connected to the station PT3 through the cable 4. The cement shell above the load switch cabinet A bracket 2 is installed in the housing, and the station PT is installed on the bracket.

When it is necessary to overhaul the PT, the outgoing line interval does not need to be powered off, because the outgoing line interval is not only connected to the suspended load switch cabinet, but also connected to other loads as the incoming or outgoing line interval. Only the suspended load switch is separated, so that the PT will be powered off and can be operated repair. In this way, the PT can be inspected and repaired without power failure without changing the size of the foundation, which saves equipment maintenance costs and improves work efficiency.

Claims (2)

1. A small-sized high-voltage ring network cabinet, including a cement shell, a switch cabinet PT interval, a switch cabinet outlet interval and a manhole, the cement shell includes a shell and a cabinet door, the cabinet door is installed on the shell, and the switch cabinet PT interval , The outlet interval of the switch cabinet and the manhole are all set in the shell of the cement shell. Load switch cabinet, the upper port of the load switch cabinet is connected to the outlet interval through the cable channel, the lower port of the load switch cabinet is connected with the station PT through the cable, and the station PT is installed on the top of the load switch cabinet Inside the cement shell shell. 2. A small-volume high-voltage ring network cabinet according to claim 1, characterized in that: the bracket is welded by angle steel, which consists of a top plate and legs, the top plate is installed on the legs, and the legs It is installed on the bottom plate of the cement shell shell, and the load switch cabinet is installed on the top plate, and the bottom of the top plate is a manhole.