35 kV Package Transformer Substations (KTPB)
General information
Complete block-type transformer substation (KTPB) with an upper voltage of 35 kV is a fully factory-ready step-up or step-down substation for the reception, transformation and distribution of electricity at 35 / 10(6) / 0,4 kV. Typical applications are power-collection substations for solar power plants (SPP) and wind power plants (WPP), power supply to industrial facilities, and the development of distribution networks. LK Energy Group has been manufacturing switchgear at its own factory in Odesa since 2015 (company since 2005); the 35 kV equipment was developed by the company's design engineers, and installation and commissioning of substations of this class are part of our practical experience.
The 35 kV KTPB is a made-to-order solution: each station is designed, sited and equipped for the customer's specific project. At the TOR stage we lay out the high-voltage side (35 kV) and the low-voltage side (0,4 kV), determine the scheme, cell composition and equipment ratings. In its basic version, the KTPB includes power transformers (and, if required, line voltage-regulating transformers), an outdoor 35 kV switchgear, complete outdoor switchgear (KRPZ) or indoor switchgear (ZRP) at 10(6) kV, rigid and flexible busbar work, cable structures, an overall substation control point, lightning protection, grounding, lighting, foundations and fencing. Switching is performed by vacuum circuit breakers (type — project-specific); SF6 gas-insulated equipment is not used.
Climatic design — U1 / UKhL1, placement category 1 (outdoor installation). A version with noise-protection measures is available for use within city limits. Enclosures — sandwich panels or concrete shell (BKTP).
KTPB units for a voltage of 35 kV are manufactured to order in accordance with the manufacturer's technical specifications for a specific project.
Confirmed voltage class parameters:
| Parameter | Value |
|---|---|
| Rated voltage of the HV side, kV | 35 |
| Highest operating voltage, kV | 40,5 |
| Substation sides | 35 / 10(6) / 0,4 kV |
| Rated currents, transformer power, short-circuit currents (Icw / Icu / Ipk), busbar cross-section, dimensions | project-specific / per TOR |
BKTP diagrams
Wiring diagrams of KTPB elements
Description and Purpose
The 35 kV KTPB (package transformer substation) is a 35/10(6)/0.4 kV block-type transformer substation that LK Energy Group (switchgear manufacturer, Odesa; company since 2005, own factory since 2015) designs and manufactures for a specific project. Unlike lower-voltage-class switchgear, a 35 kV KTPB is an engineering structure: its composition (35 kV outdoor switchgear (VRP), 10(6) kV switchgear/metal-enclosed switchgear (ZRP/KRPN), operator control building (OPU), foundations, lightning protection) and ratings are determined by the project and the site layout. We have our own product line developed in accordance with SOU-N EE 20.178-2008 (TU U 27.1-40132794-004:2017, technical specifications) and experience in installation and commissioning. Design, configuration and scope of supply are built to your technical specification (TZ). Switching is vacuum-based (we do not use SF6/sulfur hexafluoride equipment).
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35 kV Package Transformer Substations (KTPB)
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