摘要
旋转潮流控制器(rotary power flow controller,RPFC)应用到电力系统潮流控制中,具有控制方法简单、输出无谐波、可靠性高、成本低的优点,但目前对其模型和控制特性的研究还并不充分。为此,分析并建立了RPFC的稳态数学模型,对RPFC的稳态特性进行了研究,推出了RPFC注入线路电压与转子角之间的关系,分析了RPFC的潮流控制特性。RPFC注入线路的电压受转子角度的控制,当接入RPFC后,线路电压的大小和相位对转子角度的灵敏范围不同,因此对线路有功和无功调节有不同的灵敏区域,RPFC可以在一定的圆形区域内实现对线路潮流的控制,其控制范围由RPFC能注入线路电压的最大变比决定。基于PSCAD/EMTDC的仿真结果,验证了对RPFC稳态模型和稳态特性分析的正确性以及RPFC对线路潮流控制的有效性和灵活性。
Rotary power flow controller（RPFC） applied to power flow control has the advantages of simple control method, output without harmonics, high reliability and low costs, however, current study on the controller model and the control characteristics is not sufficient. For this reason, the steady state mathematical model is analyzed and established, then the steady state characteristics of RPFC are studied and the relationship between the RPFC＇s injected voltage and rotor angles is derived, and the power flow control characteristics of RPFC are analyzed. RPFC＇s injected voltage can be controlled with the rotor angles, and the line voltage magnitude and phase have different sensitivity ranges when RPFC is installed, therefore the active and reactive power regulation have different sensitivity regions, and RPFC can control power flow within a range of round area determined by the maximum ratio of voltage injected by RPFC. The accuracy of RPFC steady state model and steady state characteristics as well as the validity and flexibility of the power flow control with RPFC are verified with PSCAD/EMTDC simulation.
出处
《电网技术》
EI
CSCD
北大核心
2015年第7期1921-1926,共6页
Power System Technology
基金
国家电网公司科学技术项目(XT71-14-039)~~
关键词
旋转潮流控制器
稳态数学模型
稳态特性
潮流控制
rotary power flow controller
steady state mathematical model
steady state characteristics
power flow control
