Effects of Time Delays in the Electric Power Grid
Effects of Time Delays in the Electric Power Grid
复制标题
电网时滞的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
D. Dasgupta
中科院分区：
文献类型：
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作者：
M. Ali;D. Dasgupta
电力网中的通信延迟影响控制系统的性能并且可能导致功率损耗。本文分析了通信延迟的原因和影响。分析采用了一个模拟的电力网络，包括几个发电机的制动电阻与智能（模糊逻辑）控制器用于暂态稳定控制。一个平衡的3LG（三相接地）故障在不同的点上的输电线路被认为是。仿真结果表明，虽然模糊逻辑控制的制动电阻可以提高暂态稳定性，与总动能偏差，这是模糊控制的输入参数的在线计算相关联的通信延迟，对暂态稳定性能的影响。本文还研究了系统可以容忍的延迟以及可能导致额外延迟的网络攻击。
Communication delays in an electric power grid affect the performance of control systems and can cause power losses. This paper analyzes the causes and effects of communication delays. The analysis employs a simulated power network comprising several generators for which braking resistors with intelligent (fuzzy logic) controllers are used for transient stability control. A balanced 3LG (three-phase-to-ground) fault at different points on the transmission lines is considered. Simulation results show that, although a fuzzy-logic-controlled braking resistor can improve transient stability, the communication delay associated with the online calculation of the total kinetic energy deviation, which is the input parameter for fuzzy control, has an influence on the transient stability performance. The paper also examines the delay that a system can tolerate and the cyber attacks that can cause additional delays.