电力系统自动化2016，Vol.40Issue(24)：111-117,124,8.DOI:10.7500/AEPS20160112001
采用改进有源补偿技术的中性点电压柔性控制方法
Flexible Control Method of Neutral Point Voltage Using Improved Active Compensation Technology
摘要
Abstract
The method of traditional active compensation for the neutral point voltage is realized by inj ecting a theoretically calculated current into the neutral point of the distribution network DN .The insulation resistance of the DN affecting the compensation effect on the neutral point voltage is usually ignored.Neither is it possible to control the neutral point voltage flexibly.When the parameters of DN change the traditional method has to measure them frequently.So it isn t effective for DN whose system architecture and parameters change frequently.A new method based on the idea of the difference method is proposed.By inj ecting an initial current into the neutral point of DN and controlling the amplitude and phase of this current simultaneously flexible control of neutral point voltage is achieved ultimately.Not only is this method able to suppress the neutral point voltage at zero but also it can suppress the neutral point voltage to an arbitrary non-zero target.It has such advantages as fast convergence simultaneous adj ustment to the amplitude and phase of the inj ection current and wide application range that together make it usable in the DN whose system structure and parameters change frequently.Its feasibility has been verified by simulation.关键词
有源补偿/中性点电压/注入电流/差分法Key words
active compensation/neutral point voltage/inj ecting current/difference method引用本文复制引用
李晓波,蒋峰景,李康,闫腾飞,丁欣..采用改进有源补偿技术的中性点电压柔性控制方法[J].电力系统自动化,2016,40(24):111-117,124,8.基金项目
国家自然科学基金资助项目(51107143).This work is supported by National Natural Science Foundation of China No.51107143 （51107143）
