Best location of SVC to improve first swing stability limit of a power system
Best location of SVC to improve first swing stability limit of a power system
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DOI：
10.1016/j.epsr.2006.10.010
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发表时间：
2007-08
影响因子：
3.9
通讯作者：
M. H. Haque
中科院分区：
文献类型：
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作者：
M. H. Haque
虽然静态无功补偿器 (SVC) 的主要目的是调节母线电压，但如果位置适当，它还可以提高电力系统的稳定性和阻尼。提出一种确定多机系统中SVC位置指标的方法，以提高系统的第一摆动稳定性极限。基于瞬态能量函数法的概念，SVC的位置指数被认为是SVC所支持的附加临界能量，并通过控制不稳定平衡点和势能边界面法来计算。在计算临界能量时，SVC 通过其处于稳定边缘的电纳来表示，并且可以通过仔细观察最近用于提高电力系统第一摆动稳定性极限的 SVC 控制策略来证明其合理性。然后在 10 机 New England 系统和 20 机 IEEE 测试系统上测试了所提出的 SVC 位置索引的有效性。然后通过比较通过系统动态方程的时域仿真获得的临界清除时间来验证所提出的方法获得的结果。
While the primary purpose of a static var compensator (SVC) is to regulate bus voltage, it can also improve stability and damping of a power system if located appropriately. This paper proposes a method of determining the location index of a SVC in a multi-machine system to improve the first swing stability limit of the system. Based on the concept of transient energy function method, the location index of a SVC is considered to be the additional critical energy supported by the SVC and is computed through controlling unstable equilibrium point and potential energy boundary surface methods. In computing the critical energy, the SVC is represented by its susceptance at the verge of stability and which can be justified by carefully observing a recent control strategy of SVC used to improve the first swing stability limit of a power system. The effectiveness of the proposed location index of SVC is then tested on the 10-machine New England system and the 20-machine IEEE test system. Results obtained by the proposed method are then verified by comparing the critical clearing time obtained through time domain simulations of system dynamic equations.