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Preventive reactive power management for improving voltage stability margin

机译：预防性无功功率管理可提高电压稳定性裕度

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摘要

Voltage stability imposes important limitations on the power systems operation. Adequate voltage stability margin needs to be obtained through the appropriate scheduling of the reactive power resources. The main countermeasures against voltage instability could be distinctly classified into preventive and corrective control actions. This paper proposes a preventive countermeasure to improve the voltage stability margin through the management of the reactive power and its reserve. The voltage and reactive power management is studied from the generator's point of view to maximize effective generator reactive power reserve {EGRPR). Detailed model of the generators including the armature and field current limits, as well as the switch mode between the voltage control and the reactive power limitations are considered to maximize the reactive power capability of the generators in emergency states. One-stage and two-stage optimization approaches are utilized to find the optimum solution. The proposed optimization procedure is applied on a 6-bus system and the New England 39-bus system to illustrate the effectiveness of the method.
机译：电压稳定性对电源系统的运行施加了重要限制。需要通过无功功率资源的适当调度来获得足够的电压稳定性裕度。应对电压不稳定的主要对策可分为预防和纠正控制措施。本文提出了一种通过对无功功率及其储备进行管理来提高电压稳定裕度的预防措施。从发电机的角度研究了电压和无功功率管理，以最大化发电机的有效无功功率储备（EGRPR）。考虑发电机的详细模型，包括电枢和励磁电流极限，以及电压控制和无功功率极限之间的切换模式，以在紧急状态下最大化发电机的无功功率能力。利用一级和二级优化方法来找到最佳解决方案。所提出的优化程序应用于6总线系统和New England 39总线系统，以说明该方法的有效性。

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