The Intelligent DC Traction Power Supply System Solution for Modern urben Trolleybuses is primarily designed for the construction and application of DC traction substations for modern urban trolleybuses with an input voltage of AC 35 kV or less and an output voltage of DC 600/750 V. These traction substations can be built using either a conventional civil engineering structure or a containerized design. The substations integrate medium-voltage AC switchgear, rectifier units, DC switchgear, auxiliary control power supplies, data management systems, and integrated auxiliary systems.

      It meets the high-standard application requirements of trolleybuses, including handling large fluctuations in power load, ensuring high reliability, facilitating easy maintenance, demonstrating strong environmental adaptability, and achieving a high level of intelligence. Combined with the intelligent DC traction electrical monitoring and management system, it enables remote monitoring and management of the traction substation. For the overhead contact line, Intelligent catenary feeding (pilot wire) remote control devices and the intelligent DC overhead contact line electrical monitoring and management system enable operational monitoring and management of each power supply section of the overhead contact line, ensuring the reliability of the entire power supply system.

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.

ZQA Series Rectifier
Primarily suitable for rectifier circuits with a rated output voltage of DC 750V and below, and transformer rated capacity up to 2500 kVA. It can be applied in power supply
systems such as urban trolleybus traction substations to convert AC power into DC
power.

WDQ Series DC Switchgear
The product is applicable to DC power supply systems such as urban trackless
trolleybus traction substations with a rated voltage of up to DC 1800V and a maximum
rated current of up to 4000A. It features a Movable type structure and is equipped with
comprehensive digital protection and control, measurement and control functions, as
well as remote monitoring and management capabilities.

WLGZ1 Series DC Power Supply Cabinet
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 loads such as
maintenance and lighting.

WDQXB Series Intelligent Box-type DC Traction Substation
This product is a prefabricated box-type substation, suitable for AC input up to 35
kV and DC output of 600/750 V for traction power systems. Its main internal
equipment includes AC medium-voltage switchgear, rectifier units, DC switchgear,
auxiliary control power supply, data management system, and integrated auxiliary
systems. It is ideally suited for use as unattended DC power supply equipment in
applications such as urban trackless trolleybus systems and DC charging stations.

Disyuntor de alta velocidad de CC WLDS1
El producto está indicado para su uso en subestaciones de tracción y estaciones de recarga de CC de trolebuses urbanos, con una tensión nominal igual o inferior a 1800 V CC y una intensidad nominal igual o inferior a 4000 A, con el fin de garantizar la desconexión de protección en caso de fallos, como cortocircuitos o sobrecargas en el circuito principal, así como la desconexión de la alimentación en condiciones normales.

QDS8 DC High-Speed Circuit Breaker
The product is suitable for urban trolleybus traction substations and DC charging stations with rated voltages up to DC 1800V and rated currents up to 1250A. It provides protective tripping under fault conditions such as short circuits and overloads in the main circuit, as
well as normal power disconnection during regular operation.

WLDG2 Series DC disconnect switch
The product is suitable for urban trolleybus traction substations and DC charging stations with rated voltages up to DC 1800V and rated currents up to 6300A. It can also be applied in DC power supply systems of other industrial equipment, providing effective electrical isolation for electrical circuits by creating a visible break point, thereby ensuring the safety of personnel and equipment.

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.

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 commun icat ion . I t ach ieves 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.