【摘要】 利用经500 kV/35 kV启备变压器接入电厂500 kV母线的静止无功补偿器(SVC),通过发电机轴系转速偏差反馈进行SVC电纳调制,并配合适当的SVC主参数与控制设计,有效地抑制了大型火电厂经500 kV串补线路外送而产生的机网次同步振荡(SSO)。介绍了该型SVC的新型接线方式、电纳调制控制策略和设计特点,以及现场试验结果。更多还原

【Abstract】 Applying static var compensators(SVC) connecting with 500 kV bus of power plant through 500 kV/35 kV starting up stand by transformer,completing SVC susceptance modulation var speed deviation feedback of generator’s shaft system,and adopting SVC main parameters and control design,the Subsynchronous Oscillation(SSO) is damped effectively caused by large-scale thermal plant through 500 kV series compensating line.It introduces a novel wire-connecting method,susceptance modulation control strategy,design characteristics and field trial result.更多还原