A long-term power system state calculation method using sequential power and holomorphic embedding

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2024-10-03 DOI:10.1016/j.epsr.2024.111125

Hongzhong Li , Yihao Huang , Fuxin Luo , Xiaolu Li , Luo Li

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引用次数: 0

Abstract

Traditional Power Flow (PF) calculations struggle to support the data analysis requirements as the power system develops. Therefore, this paper introduces a non-sequential and non-iterative PF calculation method to enhance the computational speed and analytical efficiency of power system state variables over long time scales. Firstly, a Power Sequential Division (PSD) method is proposed, representing the power curve using hierarchical energy with temporal characteristics. Next, based on the Fast and Flexible Holomorphic Embedding (FFHE) method, the paper explores the incremental properties of Voltage Power Series Coefficients (VPSC) and proposes an Incremental Holomorphic Embedding (IHE) method. Finally, by combining PSD and IHE, this study introduces a Power Sequential Flow (PSPF) method for rapid computation of power system state variables over long time scales. Unlike traditional PF methods, PSPF method shifts away from time-series calculations and instead analyzes the distribution of power system state variables over long time scales from an energy perspective. Various test cases are set up to analyze the performance characteristics of IHE and PSPF from multiple perspectives. The results indicate that the proposed methods significantly outperform traditional PF methods in terms of computational speed, adaptability to test cases, and analytical efficiency.

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利用顺序功率和全态嵌入的长期电力系统状态计算方法

随着电力系统的发展，传统的功率流 (PF) 计算难以满足数据分析的要求。因此，本文介绍了一种非序列和非迭代的 PF 计算方法，以提高长时间尺度上电力系统状态变量的计算速度和分析效率。首先，本文提出了一种功率序列划分（PSD）方法，利用具有时间特性的分层能量来表示功率曲线。接着，基于快速灵活的全形态嵌入（FFHE）方法，本文探索了电压功率序列系数（VPSC）的增量特性，并提出了增量全形态嵌入（IHE）方法。最后，通过结合 PSD 和 IHE，本研究介绍了一种用于快速计算长时间尺度电力系统状态变量的功率序列流 (PSPF) 方法。与传统的 PF 方法不同，PSPF 方法不再进行时间序列计算，而是从能量角度分析电力系统状态变量在长时间尺度上的分布。为从多个角度分析 IHE 和 PSPF 的性能特点，我们设置了各种测试案例。结果表明，所提出的方法在计算速度、对测试案例的适应性和分析效率方面都明显优于传统的 PF 方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.