Security constrained emergency voltage stabilization: A Model Predictive Control based approach
Security constrained emergency voltage stabilization: A Model Predictive Control based approach
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安全约束的紧急电压稳定：基于模型预测控制的方法
DOI：
10.1109/cdc.2008.4739120
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
N. Elia
中科院分区：
文献类型：
--
作者：
Licheng Jin;Ratnesh Kumar;N. Elia
电压不稳定会影响电力系统的传输限制及其可靠性。本文提出了一种基于模型预测控制（MPC）理论来确定电压控制方案的方法。 MPC 用于开发最佳控制策略，包括一系列要切换的并联电容器数量。由此产生的控制策略可防止电压不稳定并保持所需量的瞬态后电压稳定裕度（系统安全性指标）。优化的目标是最小化累积电压偏差和电容控制的累积成本的加权和。电容控制对电压行为的影响是通过轨迹灵敏度来计算的。电压稳定裕度相对于电容控制的敏感性用于在 MPC 公式中构建故障后操作的安全约束。通过在 39 总线新英格兰系统中防止电压崩溃的应用，说明了所提出方法的有效性。
Voltage instability impacts power system transfer limits and its reliability. This paper presents an approach to determine a voltage control scheme based on the model predictive control (MPC) theory. MPC is used to develop an optimal control strategy, consisting of a sequence of amounts of the shunt capacitors to switch. The resulting control strategy prevents voltage instability and maintains a desired amount of post-transient voltage stability margin (an index of system security). The objective of optimization is to minimize a weighted sum of the cumulative voltage deviations and the cumulative cost of capacitive controls. The effect of the capacitive control on voltage behavior is computed by means of trajectory sensitivity. The sensitivity of voltage stability margin with respect to the capacitive control is used to construct a security constraint for post-fault operation in the MPC formulation. The efficacy of the proposed approach is illustrated through applications to the 39-bus New England system for preventing voltage collapse.