摘要
基于断面潮流提出了大电网的小扰动稳定域实用模型,该模型给出了断面潮流空间的边界点搜索策略,提出了分主导模式拟合以优化稳定域边界的方法。结合华中电网阐述了实用小扰动稳定域的具体建模过程,并以其丰大运行方式下的基本运行点为例验证了实用化模型的正确性和实用性。在断面潮流空间上研究稳定域,符合电网安全监控和运行调度的习惯,实用模型在满足工程应用精度要求的同时可简化稳定域的求取。根据边界超平面方程系数可以判断出断面潮流对系统稳定性的影响趋势,为电力系统安全监控提供有效信息。
Based on interface power flow, a practical mode of small signal stability region is proposed for large power grid. In the process of modeling, a boundary point searching strategy in interface power flow space is given and an approach to optimizing security region boundary is suggested by distinguishing dominant mode. The concrete modeling process is described in Central China Grid and its correctness and practicality are identified in the application of basic operating points during inundation. Researching security region in interface power flow space accords with the habit of power safety monitoring and power operation dispatch. The practical mode based on interface power flow can simplify the calculation of stability region and satisfy the engineering demands well Besides, the influence trend of interface power flow on system stability can be judged by hyperplane coefficients, which provides effective information for safety monitoring of power system.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第13期43-48,共6页
Power System Protection and Control
基金
国家自然科学基金项目(51077103)
国家高技术研究发展计划项目(2011AA05A119)~~
关键词
大电网
小扰动稳定域
断面潮流
HOPF分岔
安全监控
large power grid
small signal stability region
interface power flow
Hopf bifurcation
safety monitoring
