Collaborative Planning and Configuration of Photovoltaic and Energy Storage in Multiple Traction Substations Based on Generalized Analytical Target Cascading Method
Chen Yanbo, Liu Yuxiang, Tian Haoxin, Zhang Ruixin, Xu Zitao
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China
Abstract：The continuous integration of energy and transportation development is a hot topic. Connecting new energy sources such as photovoltaic (PV) and energy storage equipment to the traction substations in the railroad traction power supply system is one of the means to implement the green integration of energy and transportation and enhance the greening degree of the system. Reasonable deployment and coordinated planning of new energy and energy storage capacity in each traction substation can effectively improve the greening of the longer-distance traction power supply network and the degree of system coordination. Thus, a green energy system for rail transportation can be gradually built up. Based on the integrated traction power supply architecture and the basic idea of “planning + operation”, a collaborative planning and configuration method for PV and energy storage in multiple traction substations is proposed. The purpose of this method is to complete the one-time and integrated configuration of a multi-traction substation system. The traction load side data are processed. The means of averaging eliminates the drastic volatility of the load and meets fluctuations near the mean value. The time scale can be reduced while ensuring its volatility. A probabilistic model is established to construct the yearly typical day PV output model. According to the hour-by-hour output interval, the probability processing histogram of PV is constructed, and the probability sum of PV output is obtained by stepwise summation. The annual typical daily output curve is finally obtained. Then, with the economic optimization, a single traction substation optimization planning model is established. The generalized analytical target cascading (G-ATC) method is used to construct a cooperative planning model for multiple traction substations along the same railroad line, by minimum investment and costs operational alongside PV power curtailment expenses of the cooperative planning system. Finally, the operation simulation is carried out. The cooperative planning model of multiple traction substations along the same railway line is constructed, and the cooperative planning configuration is carried out. Then the proposed model and method are verified by taking the freight railroad as an example. By changing the billing method of the interactive power on the contact line, the payback period of the investment cost is calculated. The proposed model can reasonably and efficiently complete the multi-site new energy-energy storage planning configuration and meet the system operation requirements, providing a feasible solution for the upgrading and greening of the existing traction power supply system.
陈艳波, 刘宇翔, 田昊欣, 张瑞芯, 徐子韬. 基于广义目标级联法的多牵引变电站光伏-储能协同规划配置[J]. 电工技术学报, 2024, 39(15): 4599-4612.
Chen Yanbo, Liu Yuxiang, Tian Haoxin, Zhang Ruixin, Xu Zitao. Collaborative Planning and Configuration of Photovoltaic and Energy Storage in Multiple Traction Substations Based on Generalized Analytical Target Cascading Method. Transactions of China Electrotechnical Society, 2024, 39(15): 4599-4612.
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2024, Vol. 39 
