Optimal dispatch scheme considering system operational flexibility

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

Electric Power Systems Research Pub Date : 2024-11-07 DOI:10.1016/j.epsr.2024.111217

Kai Sun , Dahai Zhang , Jiye Wang , Wenbo Mao

引用次数: 0

Abstract

To enhance the system's capacity to manage emergencies and foster the efficient utilization of newly generated energy, this paper introduces a redefined concept of system operation flexibility and proposes a two-stage optimized economic dispatch model. This model is tailored to ensure the system's operational flexibility. In this method, net load is pinpointed as the primary driver of flexibility demand, and a data-driven approach is employed to capture the uncertainties associated with net load across various risk levels. As flexibility supplier, conventional units work in tandem to optimize their operating points, fulfilling flexibility demand while adhering to the Do Not Exceed (DNE) baseline, thereby ensuring that system flexibility remains within safe limits. A case study on the modified SG-126 bus system demonstrates that the proposed methodology effectively highlights flexibility shortfalls and validates its efficiency in terms of cost and inter-regional coordination.

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考虑系统运行灵活性的优化调度方案

为提高系统的应急管理能力，促进新能源的有效利用，本文重新定义了系统运行灵活性的概念，并提出了两阶段优化经济调度模型。该模型旨在确保系统的运行灵活性。在该方法中，净负荷被确定为灵活性需求的主要驱动因素，并采用数据驱动方法来捕捉不同风险水平下与净负荷相关的不确定性。作为灵活性供应商，常规机组协同工作，优化其运行点，在满足灵活性需求的同时遵守 "不超过"（DNE）基线，从而确保系统灵活性保持在安全范围内。对修改后的 SG-126 总线系统进行的案例研究表明，所提出的方法能有效突出灵活性不足的问题，并验证了其在成本和区域间协调方面的效率。

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.