摘要
针对传统直流配电网电压控制方法中有功功率波动过大导致直流电压波动大的问题,基于直流配电网结构,提出了一种结合变斜率下垂曲线和平移下垂曲线的新型直流配电网电压控制方法。建立了新型直流电压控制方法下变流器的直流电压控制模型,并对模型的稳定性进行了分析。通过仿真对文中所提控制方法在稳态和暂态的控制效果进行分析,验证了该方法的优越性。结果表明,相比于传统控制方法,所提控制方法在负载波动和故障时能更有效地调节系统电压,防止电压超过额定值,改善系统的电压质量。该研究为直流配电网的发展提供了一定的参考。
Aiming at the problem of large DC voltage fluctuation caused by excessive active power fluctuation in the traditional DC distribution network voltage control method,a novel DC distribution network voltage control method combining variable slope droop curve and translation droop curve is proposed based on the DC distribution network structure.The DC voltage control model of the converter under the novel DC voltage control strategy is established,and the stability of the model is analyzed.The steady-state and transient control effects of the proposed control method are analyzed by simulation,and the superiority of the proposed method is verified.The results show that compared with the traditional control method,the proposed control method can more effectively adjust the system voltage,prevent the voltage from exceeding the rated value and improve the voltage quality of the system.This study provides a certain reference for the development of DC distribution network.
作者
章寒冰
林旭义
宋艳
郝自飞
蓝文泽
ZHANG Hanbing;LIN Xuyi;SONG Yan;HAO Zifei;LAN Wenze(Lishui Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Lishui 323000,Zhejiang,China)
出处
《电测与仪表》
北大核心
2024年第10期161-166,202,共7页
Electrical Measurement & Instrumentation
基金
国网浙江省电力有限公司科技项目(5211LS1900BS)。
关键词
直流配电网
电压控制
变斜率下垂曲线
平移下垂曲线
供电质量
DC distribution network
voltage control
variable slope droop curve
translation droop curve
power supply quality
