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	Effect of nodal injection power mode on voltage stability margin
	Chen De-zhi ; Zhang Bo-ming ; Fang Xing
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical/ power grids power system interconnection power system stability/ nodal injection power mode voltage stability margin linear approximation effective corrective control loading margin/ B8110B Power system management, operation and economics B8110C Power system control
中文摘要	The feature of the computing mode for the new generation of EMS (N-EMS) is real-time, tracing, recursive and intelligent early warning. Such a computing mode needs the support of high efficient algorithm. Due to the shortened calculation step length interval between two single time computations, the rationality of linear approximation is enhanced, so the sensitivity computation used in this computing mode can satisfy computing request. For the principal component, namely the voltage stability analysis function, three kinds of nodal injection power modes are defined, i.e., the random varying direction of load, the response setting direction of generator and the ratio of active power component to reactive power component in load power, and a continuous power flow model that is easy to utilize and comprehend by dispatching center is built, based on this model three kinds of formulae to calculate the sensitivities of loading margin with respect to three kinds of nodal injection power modes are derived respectively, and on this basis the influence of nodal injection power mode on loading margin can be analyzed in order that the voltage collapse can be avoided by fast implementing early warning of voltage stability and adopting effective corrective control. Simulation results of New-England 10-machine 39-bus system validate the reasonableness of the proposed method and thinking.
语种	中文
出版者	Electric Power Research Institute ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82845]
专题	清华大学
推荐引用方式 GB/T 7714	Chen De-zhi,Zhang Bo-ming,Fang Xing. Effect of nodal injection power mode on voltage stability margin[J],2010, 2010.
APA	Chen De-zhi,Zhang Bo-ming,&Fang Xing.(2010).Effect of nodal injection power mode on voltage stability margin..
MLA	Chen De-zhi,et al."Effect of nodal injection power mode on voltage stability margin".(2010).

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