摘要
ASVG(AdvancedStaticVarGenerator)装置是利用可关断开关器件GTO构成的新型无功发生装置。作者应用“开关函数法”,给出了ASVG的暂态模型。并用新模型得出了直流侧以电容为电压支撑元件的ASVG输出的稳态无功功率只与δ角有关而与θ角无关的结论。还研究了ASVG的响应速度与参数的关系,给出了ASVG变压器漏抗对其电容电压变化的影响。仿真与300kvar工业样机实验结果的一致证明了模型的正确。这种建模方法也适用其它开关电路的建模。根据ASVG稳态模型,还提出了一种新型的逆系统非线性PI控制方法。
? An advanced static var generator(ASVG) is a new type reactive power generator based on GTOs. This paper presented a transient model of ASVG using “switching function”. A great difference between ASVGs with capacitors and ASVGs with voltage sources at DC side is pointed out. A new inverse nonlinear PI control law based on the model is proposed. Simulation and real testing results show that the model is correct and the control law has shorter response time than classical PI control law.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
1997年第7期21-25,共5页
Journal of Tsinghua University(Science and Technology)
关键词
静止无功发生器
电力系统
建模
无功功率
ASVG
switching function
inverse dynamic
nonlinear PI control law