变电站电压无功综合控制的研究

【作者】 阳月令；

【导师】 王辉；

【作者基本信息】 湖南大学 ， 控制理论与控制工程， 2001， 硕士

【摘要】 本文在阐述了变电站电压无功综合控制的原理及数学模型的基础上，采用模糊控制技术，设计了一变电站电压无功模糊控制系统。该系统根据变电站电压无功综合控制九区图的特点给出了各输入输出变量的模糊子集和隶属度函数的定义，并设计了相应的控制规则。仿真结果证明该系统能在各种负荷条件下确保电压合格和无功基本平衡，且能满足变电站对有载调压变压器分接头日调节次数和并联补偿电容器组的日投切次数的限制。通过考虑不同负荷时段对无功功率的需求和负荷突变情况下的控制要求，对上述模糊控制策略进行了改进，仿真结果证明改进后的控制策略能满足不同负荷时段对电压和无功的要求、抑制电压或无功突变情况下的误动作，且有效地减少了有载调压变压器分接头和并联补偿电容器组的调节次数。最后基于变电站SCADA系统设计了一后台电压无功综合控制软件模块。更多还原

【Abstract】 The control principle and mathematic model of substation vol/var coordinated control is discussed. This paper designs a fuzzy control system used to control the vol/var of substation. According to the characteristic of nine-area diagram of substation vol/var coordinated control,this system gives the defination of fuzzy sets and the degree of membership of input/output variables,and designs corresponding control rules.The results of simulation demonstrate the system can satisfy the constrains of the day-adjusting times of the switching of on-load transformer and paralleled compensation capacitors,and ensure voltage quality,reactive power basical balance.Considering the var requirement in different load time period and the control demand in load saltation ,a improved control scheme is provided.The results of simulation show the improved scheme can meet the demand of vol/var in different load time period, protect the wrong operation when either voltage or reactive power appears saltation,and decrease the times of regulation of the switching of on-load transformer and paralleled compensation capacitors Finally, a background software module of substation vol/var coordinated control is designed, based on the supervisory control and data acquisition system of substation.更多还原