电力系统自动化2019，Vol.43Issue(5)：7-13,7.DOI:10.7500/AEPS20180903007
电力系统输电运行弹性空间建模与效益评估
Modelling and Benefit Evaluation of Flexible Space of Transmission Operation in Power System
摘要
Abstract
With the increase of power loads and the integration of new energies, it brings new challenges to the security and economic operation of the power grid. In order to improve the security margin of power grid and optimize the resource allocation within the larger space, it is necessary to tap the potential of power transmission based on existing equipment. Therefore, a basic concept of transmission operation flexible space is proposed to explore the operation flexible space of the transmission line and tie line. This paper proposes two ways to improve transmission operation flexible space and establishes corresponding models: 1) Establishing the short-time capacity-increase model of transmission lines after contingencies based on the power transfer distribution factor; 2) Establishing the adjustable flexibility model of the tie line that considers operational constraints of the external network based on external static equivalent model. Furthermore, the economic dispatch with N-1 security model considering transmission flexible space is proposed. Finally, the benefits of transmission operation flexible space are evaluated through the IEEE 30-bus and IEEE 9-bus interconnected system. Simulation results show that the dispatch method considering transmission operation flexible space can improve the wind power consumption and reduce the operation cost effectively compared with conventional dispatch methods.关键词
输电运行弹性空间/故障短时增容/联络线灵活性/N-1安全经济调度Key words
transmission operation flexible space/short-time capacity-increase after contingencies/tie line flexibility/N-1 security economic dispatch引用本文复制引用
刘林虎,金黎明,夏清,余娟,杨知方,代伟..电力系统输电运行弹性空间建模与效益评估[J].电力系统自动化,2019,43(5):7-13,7.基金项目
国家电网公司总部科技项目"考虑发输电计划弹性的清洁能源消纳潜力分析及优化技术" （）
国家自然科学基金青年科学基金资助项目(51807014) （51807014）
This work is supported by State Grid Corporation of China and National Natural Science Foundation of China(No. 51807014). （No. 51807014）
