Optimization of the auxiliary stopping area planning in the middle-to-high speed Maglev

Abstract

Background:The Auxiliary Stopping Area (ASA) is the special section that possesses power supply rail and personnel evacuation facilities, whose quantities and locations in a line are of great significance to reduce construction cost and improve transportation efficiency for the middle-to-high speed maglev.Aim: This paper focuses on optimizing the length and location of the ASA for the middle-to-high speed maglev system to improve the robustness of maglev line.Methods: Two evaluation indexes which reflect the ASA restricts on the train operation process was proposed. A model for optimizing the setting of the ASA is constructed, and solved by the genetic algorithm.Results:The result of numerical examples shows that the proposed method can effectively improve the performances of the ASA.Conclusion: This paper proposed two indexes to reflect the impact of station settings on train operations, which provides a method to optimize the ASA from qualitative optimization to quantitative optimization.

Auxiliary Stopping Area Layout Method for High-Speed Maglev Operated Bidirectionally on Single Track

“…For example, ASAs should not be set up on bridges, switches, and steep gradients [12]. At the same time, the method suggested by Lai et al [11] does not fully consider the 2D speed protection mode, which may cause the train to fail to operate according to the expected target speed profile. As a system engineering, train safety, line condition, economy, train speed profile, and tracking interval should be considered while setting up ASAs.…”

“…Few studies have focused on the layout of ASAs. In terms of the unidirectional double-track line (unidirectional line, for short) for the middle-to-high speed maglev, Lai et al [11] took the area of the safe speed region and the Euclidean distances between the switching point of the maximum speed limit profile and the intersections of safe braking profiles and safe levitation profiles as optimal objects, regarded the minimum length of the ASA and the total length of ASAs as constraints, and solved the problem by the genetic algorithm. For the line of the HSM, Bian [12] suggested the intervals between ASAs for different speed ranges.…”

Energy‐efficient train timetabling for a medium‐speed maglev line considering propulsion and suspension energy consumption

“…Several maglev lines are still under construction in some countries, for example, China and Japan. Compared with wheel‐rail (WR) trains, maglev trains have some significant advantages, such as a smaller turning radius, stronger climbing ability, lower noise, and lower maintenance costs [2]. The maglev system can be divided into three categories in terms of technical speed, that is, low‐ to medium‐speed maglev (100 km/h), medium‐speed maglev (MSM) (200 km/h), and high‐speed maglev (>400 km/h).…”

Auxiliary Stopping Area Layout Method for High-Speed Maglev considering Multiple Speed Profiles and Bidirectional Operation

“…Jiang et al [14] proposed a method for the optimization and adjustment of the auxiliary stopping area layout, considering the operation scenario of the train tracking interval requirements. Lai et al [15] set the minimum length of the auxiliary stopping area and the total length of the auxiliary stopping area as constraints and optimized the auxiliary stopping area layout of the medium-and high-speed maglev system from two aspects: the available area of speed and the Euclidean distance between the switching point of the maximum limit speed and the intersection of the braking curve and the levitation curve. Tian et al [16] proposed a method for auxiliary stopping areas layout for the bidirectional track.…”