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Tongwei Silicon Energy (Inner Mongolia) 220kV Substation EPC Project

Tongwei Silicon Energy (Inner Mongolia) 220kV Substation EPC Project Tongwei Silicon Energy (Inner Mongolia) 220kV Substation EPC Project
Introduction
Customer Values
Other Cases
Case Center Tongwei Silicon Energy (Inner Mongolia) 220kV Substation EPC Project
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Case Center
Introduction
Overview

CHINT delivered a turnkey 220kV substation EPC project for Tongwei's high-purity polysilicon production bases in Inner Mongolia (2024), providing customized HV/MV/LV solutions. Featuring innovative transformer designs (leakage flux control, high-altitude cooling tech) and space-saving switchgear (1800mm clearance), the project ensures high reliability, safety, and low maintenance. With 24/7 support and full-process guidance, CHINT enabled seamless energization, supporting Tongwei’s green manufacturing goals.

Scope of Supply

Power transformers, Switchgears and other HV components.

Solutions

CHINT Provides full-process EPC turnkey services and one stop solutions including MV switchgear, complete equipment, and LV components for two major new energy materials production bases.

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Customer Values

Customized product design to meet customer needs
Customized product design to meet customer needs

The transformer uses unique leakage flux control technology, effectively reducing stray losses in structural components and preventing local overheating issues. Meanwhile, this project is located in a high-altitude area. The transformer uses non-guided cooling technology with a clever oil circuit design, ensuring low temperature rise while completely avoiding the risk of oil flow.

Space-saving
Space-saving

The product features a compact design with a minimum distance of 1800mm for the switchgear.

High reliability
High reliability

The circuit breaker is horizontally arranged and uses a double-action self-extinguishing arc chamber. The three-position switch allows for mechanical interlocking of isolation and grounding switches, preventing operational errors.

Ease of operation and maintenance
Ease of operation and maintenance

The switchgear adopts advanced riveting technology, offering high structural strength and ease of operation and maintenance.

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