Wide-Area Optimal Control of Electric Power Systems With Application to Transient Stability for Higher Order Contingencies
Wide-Area Optimal Control of Electric Power Systems With Application to Transient Stability for Higher Order Contingencies
复制标题
电力系统的广域优化控制及其在高阶突发事件暂态稳定性中的应用
DOI：
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发表时间：
2013
影响因子：
6.6
通讯作者：
V. Venkatasubramanian
中科院分区：
文献类型：
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作者：
G. Zweigle;V. Venkatasubramanian
利用网络和机器的时间同步测量，提出了一种响应大K值N-K故障的实时稳定控制方法。控制遵循最优性原则，在驱动转子角度可接受的平衡点，以最小的成本，通过预测状态响应轨迹的一个集合的阶梯状结构变化，从一个容许的集合，根据一个定义的模型。一个成本度量适合于减轻转子角不稳定性的开发。非理想的建模，测量延迟，控制的可用性，和致动的成功进行了研究。它示出了如何控制系统结构中的反馈制定增加了处理高阶突发事件的能力。作为一个实验的例子，一组同时N-3暂态稳定相关的事故是稳定的IEEE 39节点系统。此外，控制驱动故障后的响应进行了研究，它表明，系统保持驱动到一个有效的稳定平衡点。
A real-time stabilizing control method for responding to N-K contingencies, with large K, is developed utilizing network and machine time-synchronized measurements. The controls follow an optimality principle in driving rotor-angles to an acceptable equilibrium point, at minimum cost, by predicting state response trajectory to a collection of stepped structural changes, from an admissible set, according to a defined model. A cost metric suitable for mitigating rotor-angle instability is developed. Non-idealities in modeling, measurement latency, control availability, and actuation success are investigated. It is shown how control over system structure in a feedback formulation increases the capability to handle higher order contingencies. As an experimental example, a set of simultaneous N-3 transient stability related contingencies are stabilized for the IEEE 39-bus system. Furthermore, the response after control actuation failure is investigated and it is shown that the system remains driven to a valid stable equilibrium point.