摘要
在电网中实际存在的输电断面基础上,提出了涵盖电网中线路、主变压器、母线与开关等设备分组的广义断面概念。由此定义了电网调度操作风险,即调度操作设备本身以及与调度操作设备同处一个广义断面的其他设备发生故障给电网带来的综合影响,并提出了适用于调度操作风险的评估方法。该方法将设备分为暴露型设备与封闭型设备,并分别赋予其相应的时变故障概率模型,应用发电机再调度与负荷削减的最优潮流模型等效评估设备故障给电网造成的风险后果。最后应用IEEE 10机39节点系统与某实际电网验证了该方法的有效性。
Due to the fact that some transmission line sections exist in real power systems for stability monitoring, a generalized section concept is proposed in this paper which can be used to group the power components, such as line, main transformers, bus bars, and switches. Then the dispatching operation risk is defined as the total influence including the dispatching element outage and the other elements outage located in the same generalized section. According to the above theory, a risk assessment method for dispatching operation is presented in which two different time-varying component outage models for the sealed and exposed elements are introduced respectively. Then an optimal power flow model based on the generator re-dispatching and the load curtailment is utilized to evaluate the risk influence caused by the element faults. Finally, the correctness and effectiveness of this method are tested by utilizing the IEEE 39-bus system and a real power system.
出处
《电工技术学报》
EI
CSCD
北大核心
2016年第3期155-163,共9页
Transactions of China Electrotechnical Society
基金
广东电网调度操作安全风险量化评估模型研究及实用系统建设研究资助项目(K-GD2012-301)
关键词
断面
风险
调度
负荷削减
Section, risk, dispatching, load curtailment
