确定电力系统中可再生能源电力来源的数学模型和算法

І. О. Гунько, С. О. Кудря, В. О. Комар, П. Д. Лежнюк
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摘要

这篇文章介绍了一种方法和算法的开发,用于计算电网各节点的发电和用电所导致的电网电路分支中电能流的各个组成部分。特别是,它涉及估算可再生能源(RES)在给定用户用电量中所占的份额。该方法以计算电网稳态模式的方法和算法为基础,整合了一个数学模型,用于确定电力系统电路分支中的电流成分。该模型利用可再生能源节点和节点电压在电路分支中的电流分布系数,形成可再生能源在电网分支中的电流分布系数矩阵。由于电力系统 (EPS) 中的可再生能源使用普通电网传输其产生的电力,因此准确确定其在总流量中的功率份额可考虑可再生能源对 EPS 模式参数的影响。估算可再生能源在给定用户用电量中所占比例的算法的特点是考虑了电力系统中的物理过程。计算的输入数据包括电力系统参数、节点负荷(由容量或计划指定)、可再生能源发电阵列、集中供电节点以及可再生能源电力保证来源控制值的用户。电网分支节点的功率分配系数矩阵形成过程中的电压由电网稳态模式的计算结果或实验测量数据确定。通过一个实际例子,验证并演示了该方法的有效性以及估算可再生能源在给定用户电力消耗中所占份额的准确性。确定可再生能源在用户用电量中所占的比例,将为生产商和消费者增加可再生能源的使用创造有利环境,并促进绿色能源市场的发展。参考文献18.图 3.
本文章由计算机程序翻译,如有差异,请以英文原文为准。
MATHEMATICAL MODEL AND ALGORITHM FOR THE DETERMINATION OF THE ORIGIN OF ELECTRICITY FROM RENEWABLE ENERGY SOURCES IN THE ELECTRIC POWER SYSTEM
The article deals with the development of a method and algorithm for calculation of individual compo-nents of electricity flows in the branches of an electric power grid circuit caused by generation and con-sumption in its nodes. In particular, it is about estimating the share of renewable energy sources (RES) in the electricity consumption of a given consumer. The method is based on methods and algorithms for the calculation of steady-state modes of power grids, integrating a mathematical model for determining the components of current flows in the branches of the power system circuit. The model employs distribution coefficients of currents in the circuit branches from RES nodes and node voltages to form a matrix of cur-rent distribution coefficients for RES across the power grid branches. Since RES in electric power systems (EPS) use general power grids to transmit the electricity they generate, accurate determination of their power share within overall flows enables the impact of RES on the EPS mode parameters to be considered. The peculiarity of the algorithm for estimating the share of RES in the electricity consumption of a given consumer is its consideration of physical processes in the power system. The input data for the calculation are the power system parameters, the node loads (specified by capacity or schedules), as well as arrays of RES generation and centralized power supply nodes and consumers with a controlled value of the Guar-anteed Origin of electricity from RES. The voltages during the formation of the matrix of power distribu-tion coefficients at nodes along the branches of the power grid are determined by the calculation results of the power grid steady-state modes or by experimental measurement data. The method's efficacy and the accuracy of estimating the RES share in the power consumption of a given consumer are verified and demonstrated through a practical example. Determination of the share of the consumer's electricity con-sumption, which origin from renewable sources can be guaranteed, creates an enabling environment that would foster producers and consumers to increase the use of renewable energy sources and promotes the development of the green energy market. Ref. 18. Fig.3.
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