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voltage stability critical point
相关语句
  电压稳定临界点
     AN ALGORITHM FOR DETERMINING VOLTAGE STABILITY CRITICAL POINT BASED ON INTERIOR POINT THEORY
     基于现代内点理论的电压稳定临界点算法
短句来源
     APPROACH FOR IDENTIFICATION AND COMPUTATION OF STATIC VOLTAGE STABILITY CRITICAL POINT
     一种静态电压稳定临界点的识别和计算方法
短句来源
     As power system will operate more near voltage stability critical point,an OPF(Optimal Power Flow) model containing voltage stability constraints is established,which adds voltage stability margin constraints as the inequality constraints to the traditional model.
     针对电力系统将运行在更加接近电压稳定临界点的情况,建立了一种包含电压稳定约束的最优潮流(OPF)数学模型,在常规OPF模型基础上增加了一组电压稳定裕度约束作为不等式约束。
短句来源
  “voltage stability critical point”译为未确定词的双语例句
     An identification and computation method of static voltage stability critical point by using the continuation method is presented.
     提出了一种用连续潮流技术识别和计算电压崩溃临界点的方法。
短句来源
  相似匹配句对
     Voltage Stability Monitoring and Predicting
     电压稳定在线预测评估方法研究
短句来源
     Influence of HVDC on voltage stability
     直流输电对电压稳定性的影响
短句来源
     S. stability.
     S.
短句来源
     Direct method for calculating critical point of voltage stability
     电压稳定临界点的直接计算法
短句来源
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Almost all proximity indictors of traditional power system voltage stability treat voltage stability critical point as the saddle node bifurcation point, while the Hopf bifurcation point is paid no attention to. Therefore, they are somehow optimistic in applications. In this paper, based on the modified Jacobian matrix model, an indictor in frequency domain is presented. It can be used to measure the proximity to voltage instability which is indicated by either Hopf or saddle node bifurcation....

Almost all proximity indictors of traditional power system voltage stability treat voltage stability critical point as the saddle node bifurcation point, while the Hopf bifurcation point is paid no attention to. Therefore, they are somehow optimistic in applications. In this paper, based on the modified Jacobian matrix model, an indictor in frequency domain is presented. It can be used to measure the proximity to voltage instability which is indicated by either Hopf or saddle node bifurcation. The results of two example power systems show that the proposed indictor can approach nearly "linearly" to zero in a wide interval around the system critical point.

传统的电压稳定测度指标都把潮流方程雅可比矩阵奇异点作为系统电压失稳的临界点,而不考虑系统发生Hopf分叉的可能性,因而使得相应的测度指标不可避免地具有一定的冒进性。文章利用Laplace变换,提出了一种基于雅可比矩阵修正模型的电压稳定性频域测度。该测度是对以潮流方程雅可比矩阵奇异为前提所提出相应测度指标的修正,可同时计及系统发生Hopf分叉和鞍点分叉的可能性。两个算例系统的计算表明,它具有较好的线性特性,因而对系统失稳的临界点具有较好的预见性。

An identification and computation method of static voltage stability critical point by using the continuation method is presented. The saddle-node bifurcation point and the limit-induced bifurcation point are two kinds of the most frequent critical points in static voltage stability analysis of power systems. An indirect method such as the continuation power flow based computation method for voltage collapse point is suitable method since there is no difficulty...

An identification and computation method of static voltage stability critical point by using the continuation method is presented. The saddle-node bifurcation point and the limit-induced bifurcation point are two kinds of the most frequent critical points in static voltage stability analysis of power systems. An indirect method such as the continuation power flow based computation method for voltage collapse point is suitable method since there is no difficulty of determining the initial point and it can handle cases of loads with the coupled parameters. The limit induced bifurcation points can easily be identified by use of the method. The numerical results of a practical power system in China show that the presented method is very effective.

提出了一种用连续潮流技术识别和计算电压崩溃临界点的方法。电力系统静态电压稳定分析中,常见有鞍结型分岔点和约束诱导型分岔点。基于连续潮流的间接方法没有确定初值的困难,适合于负荷参数耦合的情形,易于识别约束型分岔点,从而适合于大型实际系统静态稳定临界点的计算。通过对中国一个实际地区系统的数值分析,表明文中所提方法是有效的。

Voltage stability region is of great value for on-line security monitoring,assessment and control of power systems,Based on detailed dynamic model of power systems,the boundary of voltage stability region is depicted in the space of tap-raten and load voltage V of power systems subject to load power disturbances.The time frame includes transient and mid-termvoltage stability,Several beneficial conclusions about voltage stability region both in the n-V space and...

Voltage stability region is of great value for on-line security monitoring,assessment and control of power systems,Based on detailed dynamic model of power systems,the boundary of voltage stability region is depicted in the space of tap-raten and load voltage V of power systems subject to load power disturbances.The time frame includes transient and mid-termvoltage stability,Several beneficial conclusions about voltage stability region both in the n-V space and in injection space aredrawn,including a principle on“critical load power disturbance vectors”.Based on the principle,the tap changer can be lockedat any position and the critical power disturbance may be found carrying out simulation once,which tremendously reduces thenumber of scenarios for searching voltage stability critical points in injection space.It is also found that the set of critical loaddisturbances in the injection space can be approximately modeled by a hyper-plane,which is meaningful for the application ofvoltage stability region in power systems.

电力系统的在线安全监控中,电压稳定域的研究具有重要的意义。在完整考虑各种重要动态机制的基础上,针对功率扰动的情况,对分接头位置和母线电压空间中的电压稳定域和复功率注入空间中的电压稳定域分别进行了研究,在上述空间中分别刻画出了电压稳定域的边界,所研究的时间框架涵盖了电压稳定的暂态与中期的过程。通过大量仿真研究得到了关于电压稳定域边界的一些规律性认识,提出了关于临界功率扰动向量的事实,即可以把各台变压器分接头分别锁定在任一既定位置上,通过仿真来寻找临界功率扰动向量。该经验律的发现可以大大减少注入功率空间中电压稳定临界点搜寻方案组合的数目。同时还发现,注入功率空间中临界功率扰动向量的集合可以使用超平面近似表示,这一结果对电力系统的在线安全监控具有重要的应用价值。

 
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