论文标题
在极端温度下，电力系统的弹性分析和级联故障模型
Resilience Analysis and Cascading FailureModeling of Power Systems under Extreme Temperatures
论文作者
论文摘要
在本文中，我们提出了一个基于交流电源的级联故障模型，该模型明确考虑了外部天气条件，尤其是极端温度，并评估了极端温度对级联停电的启动和传播的影响。具体而言，由于温度干扰，评估了传输线和发电机中断的概率，对负载和动态线等级更改进行了建模，并且仔细计算了每种类型事件的时机以确定实际事件序列。应该强调的是，随着外部温度变化的出现，相关事件可能会导致电压不稳定。此外，我们将欠压负载脱落和操作员重新划分为防止级联故障传播的控制策略。通过对RTS-96 3面积系统的模拟结果来验证所提出的模型的有效性，发现温度干扰可以导致相关的负载变化和线/发电机绊倒，这将大大增加级联和电压不稳定性的风险。还仔细研究了临界温度变化，温度干扰的关键面积，大多数脆弱的公交车的识别以及对不同控制策略的比较。
In this paper, we propose an AC power flow based cascading failure model that explicitly considers external weather conditions, extreme temperatures in particular, and evaluates the impact of extreme temperature on the initiation and propagation of cascading blackouts. Specifically, load and dynamic line rating changes are modeled due to temperature disturbance, the probabilities for transmission line and generator outages are evaluated, and the timing for each type of events is carefully calculated to decide the actual event sequence. It should be emphasized that the correlated events, in the advent of external temperature changes, could together contribute to voltage instability. Besides, we model undervoltage load shedding and operator re-dispatch as control strategies for preventing the propagation of cascading failures. The effectiveness of the proposed model is verified by simulation results on the RTS-96 3-area system and it is found that temperature disturbances can lead to correlated load change and line/generator tripping, which together will greatly increase the risk of cascading and voltage instability. Critical temperature change, critical area with temperature disturbance, identification of most vulnerable buses, and comparison of different control strategies are also carefully investigated.
