电网静态电压稳定控制数学模型的研究

STUDYON THEMATHEMATICALMODELOFSTATICVOLTAGESTABILITY CONTROL

在系统最近崩溃点的基础上，以系统的负荷功率裕度定义了系统的静态电压稳定裕度。目标函数考虑了系统的安全性和经济性，并以系统的控制变量、输出变量、支路传输功率和静态电压稳定功率裕度为约束条件，建立了提高系统静态电压稳定裕度的电压稳定控制数学模型。在控制模型中提出了安全经济协调因子和综合控制调节顺序加权系数的概念。使静态电压稳定控制模型更实用化。

Based on the load nearest to the voltage collapse point acquired from the m ethod ofthe nearest voltage collapse point, this paper defines the static voltage stability proxim ity of the system according to the load pow er proxim ity. An optim alvoltage stability controlm athem aticalm odelis setup to enhance the system 's static voltage stability proxim ity. In this m odelthe objective function is taken as the com prehensive objective function, and the constraint is considered to be the controlvariables, the outputvariables, the transm itted pow erofthe branch and the staticvoltagestability power proxim ity. The concepts of the security-econom y coordination factor and the synthetic controladjustm ent sequence coefficient are put forw ard in the m athem aticalm odel, w hich m akes the m odelm ore practicable.