Method and system for optimizing energy conservation of urban rail transit

A technology for urban rail transit and optimization methods, applied in the field of energy-saving optimization methods and systems for urban rail transit, to achieve the effects of enhancing practicability and reducing energy consumption

Inactive Publication Date: 2015-01-07
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide an energy-saving optimization method and system for urban rail transit, so as to solve the problem that the existing technology fails to make reasonable use of the surplus energy of braking, and realize multi-vehicle coordinated optimal control, reducing or eliminating regenerative braking Dissipation of excess energy to stabilize the voltage of the power supply section

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  • Method and system for optimizing energy conservation of urban rail transit
  • Method and system for optimizing energy conservation of urban rail transit
  • Method and system for optimizing energy conservation of urban rail transit

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with a set of embodiments and drawings.

[0048] The surplus regenerative braking energy mentioned in the present invention refers to the part of the regenerative braking energy that exceeds the total energy consumption of other non-braking vehicles in the same power supply station. The specific value of surplus regenerative braking energy can be calculated through the train circuit model of the same power supply station, and it can be absorbed and distributed by adjacent trains in the power supply station. The goal of surplus regenerative braking energy is to maximize the absorbed energy by considering the movement of adjacent trains and the structure of the power supply system. The following points should be considered in the distribution of surplus regenerative energy:

[0049] 1. The location of adjacent trains: the closer the train, the more energy should be allocated;

[0050] 2. Operating conditions o...

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Abstract

The invention discloses a method for optimizing energy conservation of urban rail transit. The method includes steps of computing surplus energy; omitting optional adjustment if the surplus energy is lower than or equal to zero, and distributing the surplus energy by region controllers if the surplus energy is higher than zero; enabling other trains in the same sectors to compute idle running time according to the distributed surplus energy and running the other trains according to the idle running time; enabling the region controllers to judge whether the trains are braked in future time T or not; carrying out the steps again if the trains are braked in the future time T, and executing current running schemes if the trains are not braked in the future time T. According to the technical scheme, the method has the advantages that the surplus regenerated brake energy of the trains can be completely or partially absorbed by the next trains in the same power supply sectors, so that energy consumption can be reduced; local speed curves of the trains are equivalently adjusted, and the average speeds of the trains at adjustment stages are identical to original speeds of the trains; the surplus regenerated energy can be distributed in real time, and accordingly the practicality of the method can be improved.

Description

Technical field [0001] The invention relates to rail transit train operation control, in particular to an energy-saving optimization method and system for urban rail transit. Background technique [0002] As a large-volume and high-efficiency transportation method, the urban rail transit system undertakes the important task of urban passenger flow transportation and is an important part of the urban transportation system. In recent years, with the acceleration of urbanization, China has entered a period of vigorous development of urban rail transit. As an important part of the city’s “transit system”, the safety, punctuality, comfort and operational efficiency of urban rail transit are also important indicators to measure its operational quality, affecting service quality and operating costs. [0003] Energy consumption is an important part of urban rail transit operating costs, and is often used to measure the operating efficiency of urban rail transit systems. The system operat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L23/00
Inventor 孙绪彬董海荣蔡虎侯晓伟张梦扬
Owner BEIJING JIAOTONG UNIV
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