{"product_id":"dual-source-trolleybus-dc-traction-power-solution-baoding","title":"Wanlong Electric Dual-Source Trolleybus DC Traction Power Solution – Baoding Project","description":"\u003ch2\u003eProject Background\u003c\/h2\u003e\n\u003cp\u003eThe \"Dual-Source Trolleybus Project\" was one of the key public welfare infrastructure projects of the Baoding Municipal Government in 2018. Suzhou Wanlong Electric Group was honored to participate in the construction of the Baoding Public Transit Dual-Source Trolleybus Project, providing reliable power supply solutions to ensure safe and stable operation.\u003c\/p\u003e\n\u003cp\u003eDual-source trolleybuses run on clean energy, helping to reduce urban air pollution and improve urban transport capacity. They can operate both via overhead contact wire networks and on-board batteries, ensuring uninterrupted service even during power outages or road obstructions. With construction costs of approximately RMB 10 million per kilometer, they are highly suitable for medium and large cities.\u003c\/p\u003e\n\u003cp\u003eBeijing Public Transport Group's Trolleybus Branch — a veteran trolleybus operator — has been developing and operating dual-source trolleybuses for many years and leads the country in fleet scale. As part of the Beijing-Tianjin-Hebei coordinated development initiative, the group actively participated in Baoding's dual-source trolleybus construction. The traction power supply equipment for this project adopts Wanlong's \u003cstrong\u003eIntelligent DC Traction Power System Integrated Solution for Dual-Source Trolleybuses\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/54859529.webp?v=1784528425\" alt=\"WDQXB DC Traction Substation electrical primary system diagram – AC 10kV to DC 750V\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eSolution Components\u003c\/h2\u003e\n\u003ch3\u003e1. WDQXB Series Intelligent Compact DC Traction Substation\u003c\/h3\u003e\n\u003cp\u003eConverts AC 10kV to DC 750V for trolleybus traction power supply.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/54859525.webp?v=1784528425\" alt=\"WDQXB Intelligent Compact DC Traction Substation exterior appearance\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Unmanned Operation:\u003c\/strong\u003e Integrates microprocessor-based protection, smart meters, and I\/O modules to collect circuit parameters, breaker status, isolator positions, trolley positions, access control signals, DC insulation parameters, transformer temperature, busbar joint temperature, ambient temperature, diode over-temperature alarms, and fuse signals. Enables remote intelligent monitoring from the dispatch control center, improving operational reliability and reducing maintenance costs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Security System:\u003c\/strong\u003e Equipped with video surveillance and HFC-227ea (heptafluoropropane) automatic fire suppression system for remote monitoring and fire prevention. Emergency lighting included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong Environmental Adaptability:\u003c\/strong\u003e Full metal enclosure with steel-welded base; double-layer high-quality steel walls and roof with heat-insulating, flame-retardant asbestos filling. Temperature and humidity controller with industrial air conditioning — auto-activates cooling when ambient temperature rises; remote control of HVAC system supported.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpace-Saving Design:\u003c\/strong\u003e Highly integrated electrical equipment layout compared to civil-structure substations. Enclosure dimensions customizable based on substation capacity and equipment quantity, with appearance adaptable to surrounding environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Maintenance:\u003c\/strong\u003e High-voltage and DC switchgear use draw-out (trolley-type) structures for excellent interchangeability. All compartments designed with adequate maintenance access.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable Appearance:\u003c\/strong\u003e Enclosure design can be tailored to match the urban environment style.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/54859526.webp?v=1784528425\" alt=\"WDQX Catenary Feeder Remote Control Device installation diagram\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/54859528.webp?v=1784528425\" alt=\"WKS-DTMS2000 DC Traction Monitoring System architecture diagram\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch3\u003e2. WDQX Intelligent Catenary Feeder (Longitudinal Link) Remote Control Device\u003c\/h3\u003e\n\u003cp\u003eThe DC 750V output from the traction substation is delivered via feeder cables to the overhead contact wire network. The WDQX device enables isolation of specific cables and contact wire sections for maintenance without disrupting vehicle power supply, using adjacent network sections for emergency interconnection.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCloud platform connectivity: collects switch status, contact wire voltage on both sides, and internal temperature within seconds; supports remote switching commands via cloud platform.\u003c\/li\u003e\n\u003cli\u003eOn-site Wi-Fi support for data exchange, significantly reducing field maintenance workload.\u003c\/li\u003e\n\u003cli\u003eAutomatic voltage interlock during switching operations to prevent live\/loaded switching.\u003c\/li\u003e\n\u003cli\u003eReal-time diagnostics of switches, energy storage devices, controllers, and other key components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e3. WKS-DTMS2000 Intelligent DC Traction Electrical Monitoring \u0026amp; Management System with Remote O\u0026amp;M Platform\u003c\/h3\u003e\n\u003cp\u003eThe monitoring system comprises an electrical monitoring system and an integrated auxiliary system. The electrical monitoring system handles real-time monitoring and data\/command relay for AC and DC traction power equipment. The auxiliary system covers video surveillance, fire detection, access control, and environmental monitoring for traction substations.\u003c\/p\u003e\n\u003cp\u003eThe WKS-DAS1000 Data Management System is installed in each substation, collecting key operational parameters (electrical parameters, fault data, equipment status, environmental data, temperature monitoring, maintenance information, etc.) from field devices via RS485 Modbus-RTU. Data is uploaded to the remote monitoring center, which can also issue authorized remote control commands (close\/open, etc.).\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/54859527.webp?v=1784528425\" alt=\"WKS-DTMS2000 intelligent monitoring system interface – Baoding trolleybus project\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Monitoring:\u003c\/strong\u003e Data acquisition, processing, event logging, fault alarm handling, load analysis, and print output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReporting:\u003c\/strong\u003e Custom report templates, scheduled\/on-demand report generation, printing, and management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Functions:\u003c\/strong\u003e Remote control logic, setpoint adjustment, and safety measure management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Management:\u003c\/strong\u003e Network and device redundancy, access control, virus protection, and substation management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCybersecurity:\u003c\/strong\u003e IP authentication encryption or hardware firewall configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Self-Recovery:\u003c\/strong\u003e Automatically restores to working state after power supply recovery.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wan Long Electric","offers":[{"title":"Default Title","offer_id":44272844996674,"sku":null,"price":21000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/1.webp?v=1784529568","url":"https:\/\/wanlongelectric.com\/zh\/products\/dual-source-trolleybus-dc-traction-power-solution-baoding","provider":"Wan Long Electric Group Co., Ltd.","version":"1.0","type":"link"}