使用基于电纳调制的SVC以抑制机网次同步谐振

【作者】 武云生； 卓华；

【机构】 陕西电力科学研究院； 国华电力公司；

【摘要】 采用通过电厂原有500kV/35kV启备变压器接入35kV SVC(静止无功补偿装置)的新接线方式,使用发电机轴系转速△ω作为SVC控制信号和电纳调制控制技术,配合以适当的SVC主参数与控制设计,有效地抑制了多套汽轮发电机组经500kV串补线路输电而产生的机网次同步谐振。本文介绍这种抑制机网次同步谐振SVC的新接线方式和电纳调制控制策略、设计特点、现场试验结果。更多还原

【Abstract】 The first torsional dynamic stabilizers(SVC ) in china were installed at the generating station to damp subsynchronous oscillations between the turbine-generator units and the series capacitor compensated transmission system.This 35 kV SVC,which consisted of thyristor controlled readers and filters parallely,connected to 500kV station base by a 500kV/35kV transformer.Test results at site show that the SVC do damp turbine-generator units subsychronous oscillations very well and allow unrestricted use of the transmisson compensation.This paper descript the SVC device’s cofiguration,parameter design,modulated control method and test results at site.更多还原