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.

 

 

Requirements for the switchgear arrangement 330 kV and 110 kV

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.

 

Monitoring subsystem GIS 330/110

Purpose and functions

 

The monitoring subsystem is designed for continuous measurement, recording and display of technical condition and the basic parameters of the switchgear in normal, pre-emergency and emergency modes, including:

- monitoring density sulfur hexafluoride gas-insulated compartments in cells;

- monitoring of partial discharge in GIS;

- accounting circuit switching resources;

- resource accounting mechanical switches;

- collection, display and archiving of monitored parameters;

- selfdiagnostic system;

- collection, storage and archiving of monitored parameters.

- transmission of information in the process control system;

The system should be continuous monitoring of the partial time-series in the GIS by UHF.

To do this in the compartments of cells switchgear manufacturer shall establish primary-WIDE microwave sensors.

The signals from these sensors must come through the blocks of the primary signal conversion and intermediate routers cabinets in price-tral server data processing system, which must be carried out analysis of the FA, display and archiving, as well as the issuance of warn-tive or alarm in the event of the intensity of the FA specified by the manufacturer switchgear installations.

The system should carry out the type of the detected signal interpretation of the FA in real time (at least 5 types of defects) through the built-fuzzy logic algorithms, etc..

GIS system should fix the mechanical wear of the resource (number of starts) drive circuit. The number of starts of the drive mechanism must be fixed, but in a special programmable counter. Forming a team to increase the counter should be on the block contact with the water.

 

 

Auxiliaries substation

Shields own needs

 

Two-piece board of own needs (auxiliaries) AC 0.4 kV is powered by two auxiliary transformers.

 

The shield of alternating current switchgear installed in a building 330, 110 kV and comprises:

· Input Panel - 2 things;

· panel sectional connection - 1 things;

· panel feeders – 2 things.

Number of outgoing lines specified project.

 

Redundant power supply is performed on the side of 0.4 kV auxiliaries. From SON 0.4 kV consumers eat 330 kV gas-insulated switchgear, the switchgear 110 kV substation control. Power drive circuit 330 kV, 110 kV AC accepted.

 

The configuration of alternating current of 0.4 kV is finally determined in the design process.

 

Operational current on SS- DC 220.

 

In accordance with the "Norms of technological design SS AC higher voltage 6-750 kV" for the supply of primary and backup protections RU-330 kV, 110 kV, autotransformers provides installation in the substation control building in separate rooms of two sealed batteries 220, each of which is attached to his shield DC. to recharge aggregates. The type and capacity of the batteries should be specified at the design stage.

 

Shield the DC (direct-current board) 220 is installed in the building of the switchgear 330, 110 kV. The composition of the current board includes chargers. From the current board feed consumers switchgear 330 kV, 110 kV gas-insulated switchgear. Number of outgoing lines specified project.

 

The final configuration of their own needs DC 220 is determined in the design process.