Suzhou Wanlong Helps the Construction of the First "Double-source Trolleybus" Line in Hebei Province

"Shuangyuan Trolley Project", as one of the projects of Baoding Municipal Government to benefit the people in 2018, has received extensive attention from all walks of life. Suzhou Wanlong Group has the honor to participate in the construction of "Baoding Public Transport Shuangyuan Trolley Project" to protect the reliable operation of Baoding Shuangyuan Trolley!

"double source trolleybuses" use clean energy, which can alleviate urban air pollution and effectively enhance urban transport capacity. He can not only use the contact power grid set up along the line, but also use the battery on the car to run, and will not "lie prone" in case of power failure and roadblocks. Moreover, he can make full use of the existing urban bus lines, and the construction investment is about 10 million per kilometer, which is very suitable for the road conditions in large and medium-sized cities.

Beijing Public Transport Group Tram Branch, as an established tram company, has developed and operated dual-source trolleybuses for many years, and is constantly innovating technology and models. At present, the scale of dual-source trolleybuses is the largest in the country. With the coordinated development of Beijing, Tianjin and Hebei, the tram branch of Beijing Public Transport Group has also actively participated in the construction of Shuangyuan trolleybus in Baoding. The traction power supply equipment in this project adopts the "integrated solution of intelligent DC traction power supply system for dual-source trolleybus" of Suzhou Wanlong Group ". Includes "for converting AC 10kV to DC 750VWDQXB series intelligent box-type DC traction substation","WDQXIntelligent remote control device for feeding out (longitudinal connection) of contact network "and" WKS-DTMS2000 intelligent DC traction electrical monitoring and management system and its remote operation and maintenance platform ".

* WDQXB series intelligent box-type DC traction substation

1. Electrical primary system diagram

2. Functional characteristics

1) Intelligent unattended

Through microcomputer integrated protection device, intelligent monitoring instrument and intelligent I/O module, collect the operating electrical parameters of each circuit, open circuit state, isolation knife position, handcart position, access control signal, DC system insulation parameters, transformer temperature, bus connection point temperature, ambient temperature, diode over-temperature alarm signal, fuse signal, etc., in the background computer system of "Dispatching and Monitoring Center, the intelligent remote monitoring and management of DC traction station is realized. It improves the ability of the personnel on duty to control the running state of the equipment, which is conducive to the global scheduling control of the entire DC traction power supply system. It greatly improves the operation reliability of DC traction power supply system and reduces the operation and maintenance cost.

2) Perfect security system

The box-type traction station is equipped with video monitoring and heptafluoropropane automatic fire extinguishing system, which can remotely monitor the internal situation of the box-type traction station and prevent the occurrence of fire. Emergency lighting is provided in the station.

3) strong adaptability to the environment

box transformer is of all-metal structure, the base is welded with profiled steel, the wall and top cover are double-layer high-quality steel plates, and the middle is filled with heat-insulating and flame-retardant asbestos material. It is equipped with a temperature and humidity controller and an industrial air-conditioning cooling system. When the environmental temperature is high, the air-conditioning refrigeration can be automatically turned on, and the start and stop of the air-conditioning system can also be remotely controlled.

4) Save floor space

Compared with the civil structure traction substation, the box-type traction substation has highly integrated the relevant electrical equipment and makes full use of the equipment layout space. And according to the size of the capacity of the traction station and the number of electrical equipment, the traction station shell of different sizes can be designed, and the appearance can be coordinated with the surrounding environment.

5) Easy maintenance

box-type traction station are all handcart-type structures, which have good interchangeability. All component installation compartments have fully considered the maintenance and repair channels.

6) The appearance design of the box transformer is diversified and can be designed according to the style of the surrounding environment of the city.

*WDQXIntelligent remote control device for feeding out (longitudinal connection) of contact network

1. Overview

box-type DC traction substation is transmitted to the overhead contact line network through the feeder cable, so as to supply power to the dual-source trolleybus. Since feeder cables need to be overhauled and maintained frequently, in order not to affect the vehicle power supply system, the "WDQX intelligent contact network feed-out (longitudinal) remote control device" can be adopted to isolate the corresponding cables from the corresponding contact network, and the adjacent network can be used for emergency power supply to ensure the normal power supply of dual-source trolley buses. At the same time, the "WDQX intelligent contact network feed-out (longitudinal) remote control device" adopts the Internet of Things and cloud platform technology to transmit the parameters and status information related to the contact network to the remote cloud platform for processing, and the cloud platform can also issue instructions to the control device to realize remote control of the equipment.

2. Functional characteristics

• is connected through the cloud platform, and data collection such as voltage on both sides of the switch state contact line network and temperature in the device can be completed within tens of seconds, and the cloud platform can also issue instructions to remotely open/close the switch.

• Considering that the device is often installed at a location where it is not easy for field personnel to operate, the device can support field WIFI connection, and data interaction through WIFI can greatly reduce the workload of field maintenance of the device.

• device can automatically realize the voltage interlock when the switch is operated, and prevent the switch from operating with voltage and load.

• device can perform real-time diagnosis of the operating status of key components such as switches, energy storage devices, and controllers.

*WKS-DTMS2000Intelligent DC Traction Electrical Monitoring and Management System and Its Remote Operation and Maintenance Platform

1. Overview

monitoring system includes an electrical monitoring system and an integrated auxiliary system. The electrical monitoring system is used to realize the functions of in-station monitoring, data and instruction forwarding of DC traction AC and DC power supply system equipment. The integrated auxiliary system is used for video, fire, access control and environmental protection monitoring of the traction station.

The WKS-DAS1000 data management system is installed in the box-type DC traction substation, and the field bus communication interface is Modbus-RTU through RS485 of the bay layer equipment (including AC microcomputer comprehensive protection, ST700 series DC microcomputer comprehensive protection device, intelligent instrument, I/O module, temperature controller and other intelligent terminal equipment), the main operating parameters (electrical parameters, fault parameters, equipment status information, environmental status parameters, temperature monitoring data, equipment maintenance information, etc.) of the field equipment are collected and uploaded to the remote monitoring center system. At the same time, the authorized remote monitoring center system can issue remote control commands (closing/opening, etc.), so as to realize the remote monitoring and management function of the equipment.

system automatically uploads the operation and maintenance data to the cloud platform to realize the technical guarantee of remote operation and maintenance of the equipment, and further enhance the scientific nature of the equipment operation, the timeliness of maintenance and the reliability of the work.

2. Functional characteristics

1) real-time monitoring function, data acquisition, data processing, event recording, fault alarm processing, load analysis, print output and other functions;

2) Report function, according to the user's daily operation and maintenance management needs, complete report template customization, report call, report printing (timing/call) and report management, etc;

3) control function, complete the system equipment remote control logic, fixed value adjustment, safety measures management and other functions;

4) System management function. In order to improve the safety and stability of system operation, the management of network and equipment redundancy, operation authority management, virus prevention, sub-station listing and sub-station unloading are strengthened;

5) Security protection function, in order to improve the system network security, configure IP authentication encryption device or hardware firewall;

6) Fault self-recovery function, the data management system will automatically recover to the working state after the power failure is recovered.