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Energy-saving optimal scheduling under multi-mode “source-network-load-storage” combined system in metro station based on modified Gray Wolf Algorithm

Tian Jingjing, Qian Yu, Zhao Feng, Mo Shenglin, Xiao Huaxuan, Zhu Xiaotong, Liu Guangdi

Archives of Electrical Engineering

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2024

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Vol. 73, nr 1

121--143

EN

Aiming to address power consumption issues of various equipment in metro stations and the inefficiency of peak shaving and valley filling in the power supply system, this study presents an economic optimization scheduling method for the multi-modal “source-network-load-storage” system in metro stations. The proposed method, called the Improved Gray Wolf Optimization Algorithm (IGWO), utilizes objective evaluation criteria to achieve economic optimization. First, construct a mathematical model of the “source network-load-storage” joint system with the metro station at its core. This model should consider the electricity consumption within the station. Secondly, a two-layer optimal scheduling model is established, with the upper model aiming to optimize peak elimination and valley filling, and the lower model aiming to minimize electricity consumption costs within a scheduling cycle. Finally, this paper introduces the IGWO optimization approach, which utilizes meta-models and the Improved Gray Wolf Optimization Algorithm to address the nonlinearity and computational complexity of the two-layer model. The analysis shows that the proposed model and algorithm can improve the solution speed and minimize the cost of electricity used by about 5.5% to 8.7% on the one hand, and on the other hand, it improves the solution accuracy, and at the same time effectively realizes the peak shaving and valley filling, which provides a proof of the effectiveness and feasibility of the new method.

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Applied a new method for multi-mode project scheduling

Pisz I., Banaszak Z.

Applied Computer Science

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2008

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Vol. 4, no 1

114--123

EN

The aim of this paper is to present a modelling heuristic framework that enables one to cope with a problem of a project-driven manufacturing. The objective is to find computationally effective method aimed at scheduling of a new project subject to constraints imposed by a multi-project environment. The application of a heuristic method of scheduling is demonstrated on one example of a makespan-feasible schedule that follows the constraints imposed by the precedence relation and by the time-constrained resources availability. This heuristic method is based on concept of critical path and branch and bound scheme.

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The parameter driven-flexible front-end for multi-mode, multi-standard radio terminals

Kliks A., Bogucka H.

Electronics and Telecommunications Quarterly

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2007

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Vol. 53, No 2

107-126

EN

The key aspects of front-ends of the existing and future-developed wireless systems are discussed in this paper. The most promissing flexible front-end architectures for multi-mode, multi-standard and multi-band terminals are presented, and new trends in the evolution towards full reconfigurability of front-end architectures are depicted. Critical components of these architectures and their impact on the generalized multicarrier baseband processing are discussed.