摘要
直流融冰技术是解决输电线路覆冰的主要方法之一,中性点相连的2台星接链式STATCOM可实现直流融冰,同时兼具动态无功补偿功能。首先介绍了直流融冰装置的运行原理,然后研究了三相电压型整流器(voltage source rectifier,VSR)控制系统的设计,提出了均压控制与饱和调制控制方法,解决了传统控制方法下融冰电流较小的问题。最后搭建了基于NI和RT-LAB的实时仿真平台进行仿真,结果表明输出的融冰电流显著提高,验证了方案的正确性。
DC de-icing technology is one of the main methods to prevent ice coating on transmission lines.The two star-connected cascaded STATCOMs connected by neutral point can realize DC de-icing and dynamic reactive power compensation.This paper firstly introduces the operating principle of DC de-icing device,then studies the design of three-phase voltage source rectifier(VSR)control system.To solve the problem of limiting DC de-icing current value under traditional control method,this paper proposes equalization control and saturation modulation control method。Finally,a real-time simulation platform based on NI and RT-LAB is built to simulate.Results show that the de-icing current value is significantly improved,and the correctness of the scheme is verified.
作者
马晓红
杨柳青
许逵
金岩磊
曾华荣
张露松
MA Xiaohong;YANG Liuqing;XU Kui;JIN Yanlei;ZENG Huarong;ZHANG Lusong(Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550000,China;NR Electric Co.,Ltd.,Nanjing 211102,China)
出处
《南方电网技术》
CSCD
北大核心
2020年第7期10-16,共7页
Southern Power System Technology
基金
贵州电网公司科技项目(GZKJXM20171755)。
关键词
直流融冰
电压源整流器
静止同步补偿器
实时仿真
DC de-icing
voltage source rectifier
static synchronous compensator
real-time simulation
