2. The scope of work for the substation

   1. Buildings primary purpose

In this project, in the amount provided for the construction of Lot of buildings and structures of the main destination:

• Building substation control room ( SCR);

• Building GIS -330 kV;

• Building GIS -110 kV;

• Installation of portals busbar 330 kV АТ-1, АТ-2, (АТ-3 in the run up to 2020year);

• Installation of portals busbar 110 kV АТ-1, АТ-2, (АТ-3 in the run up to 2020year);

• Install line portals WL-330 kV:

• Install line portals WL-110 kV.

2. The design solutions for buildings main destination

The following are the basic structural characteristics of the designed buildings and structures.

To accommodate panels of relay protection, signaling, automation and control panels of alternating current, batteries, chargers with their shields DC, communications equipment, etc. The Contractor shall build substation control room with switching RP.

SCR building should be completely equipped with all necessary systems, facilities and equipment for normal functioning, including: power supply, water supply, lighting, heating and air conditioning, a bathroom. node communications (phone, fax, internet), etc.

Buildings switchgear 330 kV, 110 kV gas-insulated switchgear, substation control frame type, single-storey. The frame of reinforced concrete columns. The walls are made of concrete blocks. Waterproofing of roofs - membrane.

Facades of buildings - made of composite aluminum panels of different colors, which is determined by the customer. Foundations of buildings ribbon of concrete blocks.

Support for equipment - metal rack on w / b foundation supporting structures. Cabling in the territory of the SS - in semi-subterranean w / w channels covered with removable plates.

The bases under the equipment rack designed w / w, monolithic small burial. Foundations under the portals of switchgear-330 kV and 110 kV are provided in the form of prefabricated w / b stands.

The final designs of such buildings are made according to the number and layout of cabinets of relay protection devices and automation, communications, defined by the project.

29. Requirements for the switchgear arrangement 330 kV and 110 kV

    1. Basic design-layout solutions

Switchgears of 330 kV, 110 kV accepted the closure of gas-insulated switchgear. The relative position of the new substation facilities determined by the project based on the availability of existing utilities and software approaches power lines to the substation. At the stage of development and coordination of the project may change the location of linear portals overhead 330 kV and 110 kV, as well as facilities for the optimization of connection nodes corresponding to the GIS switchgear.

GIS 330 kV performed on a "queen", 5 modules switch) connecting two autotransformers and one overhead power lines of 330 kV (only 3 attachment). Additionally, provide a place for a reserve field at 3 switch.

The electrical circuit diagram of the switchgear 330 kV with the prospect of AT-3, CL-330 kV is shown in Figure (see. Section "Drawings and paintings").

GIS 110 kV performed under the scheme "two working sectioned bus system switches with two section switch without the bypass bus system" (total 18 modules switch) connecting the two antibodies, the four transformers, two 110 kV overhead lines and six KVL 110 kV. Additionally, to provide back-up space for 5 connections.

The electrical circuit diagram of the switchgear 110 kV with the prospect of AT-3, CL-1100 kV is shown in Figure (see. Section "Drawings and paintings"»).

Electrical connection GIS 330 kV gas-insulated switchgear with autotransformers performed gas-insulated electrical conductors and further via the bushing "sulfur hexafluoride-air" transition to flexible bus AT.

Electrical connection GIS 110 kV gas-insulated switchgear with autotransformers power cables is performed with the transition to flexible bus AT.

Connection GIS-330 with taps of 330 kV electrical conductors carried by gas-insulated bushings "isolated gas - air ".

Connecting GIS-110, with overhangs of 110 kV overhead power cables is carried out with end sleeves.

After the construction of the building of 330 kV GIS substation control and will need to reload the overhead line 330 kV of new portals.

A possible variant of the building of 330 kV gas-insulated switchgear and substation control is shown in Figure (see. Section "Drawings and paintings").

Buildings GIS-330 kV substation control and GIS 110 kV single-storey frame type with monolithic plates, rigidly fixed to the supporting pillars, are built on the solid foundation of tape with a polymer waterproofing. Walls of buildings designed from concrete blocks for aerated concrete adhesive. Roof without attic, made of monolithic slabs and roof steam, heat and waterproofing materials.

Cabling in the territory of the SS to be executed in semi-subterranean w / w channels, covered with removable plates. Cabling must be done to meet the requirements of Chapter 2.3 of the SAE: 2009.

At the intersections of intra-roads with underground cable installations should be equipped crossings. Switchgear must be equipped with monitoring subsystem.