The intelligent DC traction power supply system solution for metallurgical mine electric locomotives is primarily designed for the construction and application of mine DC traction substations with input voltages up to 35 kV and output voltages up to DC 750/1500 V.. The traction substations can be implemented using either conventional civil engineering structures or prefabricated containerized substations. Key equipment integrated within the substation includes medium- or low-voltage AC switchgear, rectifier units, DC switchgear, auxiliary control power supplies, data management systems, and comprehensive auxiliary systems. These components collectively fulfill critical functions such as power conversion, load distribution, fault protection, remote control, energy metering, safety management, and environmental monitoring for both surface-level mine locomotive transportation and underground DC traction power supply systems.

    The deployment of an intelligent DC traction electrical monitoring and management platform significantly enhances the reliability and safety of the DC traction power supply system, meeting the stringent requirements for unmanned operation in mine power distribution. For the traction line networks, intelligent feeder/transverse parallel remote control devices and an intelligent DC contact line electrical monitoring and management system enable real-time operational monitoring and management of individual power supply sections, thereby improving the overall reliability of the power supply system. All underground equipment complies with the relevant requirements of China's "National Safety Mark for Mining Products" regarding its review, issuance, and use.

Product Introduction

Medium Voltage Switchgear (SF6)
This product utilizes SF6 gas insulation and is suitable for use in rectifier stations or DC containerized traction substations to connect and distribute AC power sources of 35 kV and below. It includes various configurations, such as Incoming cabinets, Feeder cabinets, and PT cabinets, and features comprehensive electrical protection, remote monitoring, and automatic control functions.

GKG Type High Voltage Switchgear
This product is a general-purpose mining equipment, suitable for use in underground chamber substations. It is designed for the incoming and distribution of AC 10 kV (50/60 Hz) power supply, offering various configurations including Incoming cabinets, Feeder cabinets, and PT cabinets. It features comprehensive electrical protection, remote monitoring, and automatic control functions.

ZQA/KZL Series Rectifier Cabinet
It is primarily applicable to mine traction substations or underground chamber rectifier power supply systems with rated output voltages up to DC 1500 V and rated currents up to 2400 A, serving to convert AC power into DC power. The KZL series is a general-purpose mining product.

WDQ/KGDC Series DC Switchgear
This product is applicable to rectifier power supply systems in mine traction substations or underground chambers with a rated voltage of up to DC 1800V and a maximum rated current of up to 4000A. It features a Hand-car Type Structure and is equipped with comprehensive Digital Protection and Measurement Control, as well as remote monitoring and management functions. The KGDC type is classified as a general-purpose mining product.

WLGZ1/GKDK(GKY) Series DC Power Supply Cabinets
It is primarily used to provide DC 220V/110V auxiliary control power supply for various types of substations, as well as AC auxiliary working power for maintenance, lighting, and other loads. The GKDK (GKY) type is classified as a general-purpose mining product.

GCK/GKD Series Low-Voltage Switchgear
GCK series products are suitable for ground-based low-voltage power supply and distribution systems with AC voltages up to 690 V (50/60 Hz) and rated currents up to 4000 A; GKD series products are suitable for underground mining power supply systems with AC voltages up to 1140 V (50/60 Hz) and rated currents up to 2500 A. The GKD series is classified as a general-purpose mining product.

XL/PKD Series Low-Voltage Distribution Box
XL series products are suitable for ground-based low-voltage power supply and distribution systems with AC voltages up to 380 V (50/60 Hz) and rated currents up to 630 A; PKD series products are suitable for underground mining low-voltage power supply and distribution systems with AC voltages up to 1140 V (50/60 Hz) and rated currents up to 630 A. The PKD series is classified as a general-purpose mining product.

WLDS1 DC Fast Circuit Breaker
The product is suitable for use in surface or underground mine traction
substations with rated voltages up to DC 1800 V and rated currents up to 4000 A.
It provides protective tripping under fault conditions such as short circuits and
overloads in the main circuit, as well as normal power disconnection during routine
operation.

QDS8 DC High-Speed Circuit Breaker
The product is suitable for use in surface or underground mine traction
substations and high-power mine electric traction locomotives with rated voltages
up to DC 1800 V and rated currents up to 1250 A. It provides protective tripping
under fault conditions such as short circuits and overloads in the main circuit, as
well as normal power disconnection during routine operation.

WLDG2 Series DC Isolating Switch
The product is suitable for use in surface or underground mine traction
substations with rated voltages up to DC 1800 V and rated currents up to 6300 A.
It can also be applied in DC power supply systems of other industrial equipment to
provide effective electrical isolation of circuits, creating a visible disconnecting
point to ensure the safety of personnel and equipment.

WLCZ1 DC Electromagnetic Contactor
The product is suitable for use in DC power supply systems with rated voltages up to DC 1800 V and rated currents up to 800 A. It is applied in industrial and mining electric locomotives, line switching devices, and DC charging equipment as a non-polar contactor for main circuit unit control and auxiliary circuit tap-changing control.

ST700 DC Microcomputer Comprehensive Protection Device
The product is applicable to DC traction power supply systems, providing comprehensive protection for DC power circuits. It features electrical parameter measurement, integrated control, fault analysis, maintenance management, and electrical interlocking functions. Multiple communication interfaces facilitate remote monitoring and control of the DC traction power supply system.

ST780 DC Microcomputer Comprehensive Protection Device
The product is applicable to underground mine DC traction power supply systems with a rated voltage of DC 900V and below. It provides comprehensive protection for DC power circuits, supports direct system voltage acquisition, and integrates functions such as electrical parameter measurement, comprehensive control, fault analysis, maintenance management, and electrical interlocking. With multiple communication interface options, it facilitates remote monitoring and management of the DC traction power supply system.

WKS-DTMS2000 Intelligent DC Traction Electrical Monitoring and Management System

By utilizing the Data Management System (WKS-DAS1000) and the Comprehensive Auxiliary Systems(including video surveillance, fire protection, environmental monitoring, and access control) installed within substations, remote monitoring and management of the urban trolleybus DC traction power supply system is realized at the central monitoring station, thereby enabling Unattended operation and remote maintenance service management. The deployment of this system effectively enhances the operational reliability and economic efficiency of the DC traction power supply system, ensuring safe production and transportation.

WKS-DCMS2000 Intelligent DC Overhead Contact Line Electrical Monitoring and Management System

Designed for the overhead contact line system of urban trolleybuses, this system utilizes Intelligent catenary feeding (pilot wire) remote control devices installed along the network to enable data acquisition and remote communication. It achieves comprehensive operational monitoring and management of the DC overhead contact line system across individual power supply sections, featuring fast isolation and temporary power supply via adjacent sections. This significantly enhances the continuity and reliability of the power supply, drastically reduces post-fault recovery time, and ensures the stable operation of the public transportation system.