摘要
风电、光伏汇集区域的无功电压调节问题日趋成为制约风电消纳能力的关键因素。近年来,静态无功发生器(SVG)广泛应用于风电、光伏电站的电压及无功控制,但实际应用中SVG装置也暴露出可靠性差、响应速度慢以及系统扰动下易闭锁等问题。首先阐述了H桥级联型SVG基本控制原理,在分析风电场及光伏电站用SVG外特性要求基础上提出实验方案。针对某工程实际中应用的SVG控制器,提出了基于RTDS实时仿真系统的H桥级联型SVG物理数字混合仿真实验方法,并对实验结果进行了详细分析。
The reactive power and voltage regulation in wind farms and photovoltaic plants centralized areas has increasingly become main restriction for wind power grid integration capacity. In recent years,static var generator（ SVG） is widely used in voltage and reactive power control of wind power station and photovoltaic plants. However,problems of SVG,like poor reliability,slow response and easily blocking under the system disturbances,have been revealed in practical application. In this paper,it firstly expounds the basic control principle of cascaded H-bridge SVG. Then an experiment scheme is put forward on the basis of the external characteristic demands of the SVG used in wind farms and photovoltaic plants. Finally this paper presents a digital / physical hybrid simulation experiment method for cascaded H-bridge SVG based on RTDS and a specific SVG model which has been used in a real project,and the experiment results are analyzed in detail.
出处
《华北电力技术》
CAS
2016年第5期1-9,共9页
North China Electric Power
