多功能区域补偿型中压动态电压恢复器的研制
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摘要
给出了中国首台10kV中压区域型动态电压恢复器(DVR)的研制方法。首先通过对深圳电网10 kV系统电压跌落监测数据的统计分析,进行了该DVR装置安装位置选取和主要性能指标设计。其次重点介绍了该DVR装置主电路各组成单元及控制系统的设计方案。为进一步提高该装置的经济性并减小技术实现难度,设计了基于虚拟阻抗的控制策略,给出了该装置作为故障限流器和串联补偿器的控制方法。通过试验结果验证了装置设计及控制方法的正确性和有效性。
The development of the first 10 kV medium voltage regional compensation type dynamic voltage restorer(DVR)is presented.The location selection and performance indices of DVR are designed based on the statistics and analysis of the voltage sag monitoring data in recent years.Then the design scheme of several components of the main circuit together with the control strategy for the compensation of voltage sags are presented.To further improve the economy of this device and reduce the difficulty in its implementation, a control strategy based on virtual impedance is proposed, and the methods to control DVR as a fault current limiter and a series compensator are presented.Field experimental results are provided to show the correctness and effectiveness of the device design and control method.
The development of the first 10 kV medium voltage regional compensation type dynamic voltage restorer(DVR)is presented.The location selection and performance indices of DVR are designed based on the statistics and analysis of the voltage sag monitoring data in recent years.Then the design scheme of several components of the main circuit together with the control strategy for the compensation of voltage sags are presented.To further improve the economy of this device and reduce the difficulty in its implementation, a control strategy based on virtual impedance is proposed, and the methods to control DVR as a fault current limiter and a series compensator are presented.Field experimental results are provided to show the correctness and effectiveness of the device design and control method.
引文
[1]杨金涛,乐健,杜旭,等.中压区域补偿型动态电压调节器设计[J].电力系统自动化,2015,39(21):120-125.
[2]邸亚静,尹忠东,肖湘宁,等.级联多电平电压质量调节装置的多目标控制[J].电力系统自动化,2009,33(12):80-84.
[3]杨金涛,乐健,刘开培,等.一种具有双级滤波电路的动态电压调节器[J]电力自动化设备,2016,36(8):70-75.
[4]葛长宏,程浩忠,王霄桦,等.基于最小能量法的DVR控制算法[J].电力自动化设备,2009,29(1):70-74.
[5] Marei M I,Eltantawy A B,El-sattar A A.An Energy Optimized Control Scheme for a Transformerless DVR[J].Electric Power Systems Research,2012,83(1):110-118.
[2]邸亚静,尹忠东,肖湘宁,等.级联多电平电压质量调节装置的多目标控制[J].电力系统自动化,2009,33(12):80-84.
[3]杨金涛,乐健,刘开培,等.一种具有双级滤波电路的动态电压调节器[J]电力自动化设备,2016,36(8):70-75.
[4]葛长宏,程浩忠,王霄桦,等.基于最小能量法的DVR控制算法[J].电力自动化设备,2009,29(1):70-74.
[5] Marei M I,Eltantawy A B,El-sattar A A.An Energy Optimized Control Scheme for a Transformerless DVR[J].Electric Power Systems Research,2012,83(1):110-118.