Solutions-GoLead Intelligent

Background and Challenges

As the cornerstone of China’s energy security, the coal industry faces critical challenges in power system stability, frequent equipment start-stop cycles, adaptation to high-dust environments, and nonlinear load impacts:

High Demand for Continuous Power Supply

Underground equipment such as main ventilation fans and drainage pumps require 24/7 uninterrupted power. Any grid fluctuation or fault may lead to gas accumulation or water ingress, posing serious safety hazards.
Frequent Start-Stop Equipment Losses

Under the new power system framework, coal-fired units are tasked with flexible peak shaving, with some units starting and stopping over 30 times per year. This accelerates equipment aging and increases maintenance costs.
Nonlinear Load Impacts

Transformer energization, long cable runs, and variable frequency drives (VFDs) often generate inrush currents and overvoltages, which may cause relay malfunctions or insulation failures.

Overview

Tailored to the characteristics of the coal and coking industries, we integrate seamless transfer switches, intelligent phase-controlled breakers, and inrush current suppressors to establish a “millisecond-level power assurance + intelligent power management” system: through a fast seamless transfer system (≤20ms) to ensure continuous operation of critical loads; utilizing inrush suppression technology to reduce switching-induced electrical shocks on equipment; and combining primary-secondary integrated devices to achieve remote monitoring and energy efficiency optimization, adapting to underground high-voltage distribution systems and coking production lines, meeting the requirements of high reliability, high safety, and low losses.

Key Technologies

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