摘要
为提升配电网的供电能力与可靠性,设计并开发了一套背靠背柔性直流系统试验样机。首先对系统建立数学模型,分析系统整体工作原理。然后对正常两端并网的整流侧换流器与逆变侧换流器设计双环控制策略,实现直流母线电压的稳定与有功、无功功率的解耦独立控制,对无源网络侧换流器设计控制策略实现向无源网络供电的能力。基于LabVIEW编程语言开发了基于TPC+FPGA+RT架构的系统控制器,构建了系统试验平台,对不同工作模式进行试验验证。试验结果验证了样机设计与开发的正确性和有效性,为柔性直流系统工程应用提供了基础。
In order to improve the power supply capacity and reliability of the distribution network,an experimental prototype of a back-to-back flexible HVDC transmission system was designed and developed. First,it established a mathematical model for the system and analyzed the overall working principle of the system. Then,a dual-loop control strategy was designed for the rectifier-side inverter and the inverter-side inverter connected to the grid at both ends of the grid to achieve independent control of the decoupling of the stability of the DC bus voltage and the active and reactive power. And to the passive network-side converter,the control strategy was designed to achieve the power to the passive network. Based on Labview programming language,the system controller of TPC ＋FPGA ＋ RT architecture was developed. The system experimental platform was built to test and verify the different working nodes. The test results verify the correctness and effectiveness of the prototype design and development. It provides the basis for the engineering application of flexible DC transmission system.
作者
周永荣
钟礼海
韩华春
ZHOU Yongrong;ZHONG Lihai;HAN Huachun(State Grid Electric Power Research Institute,Nanjing,Nanjing 211106,China;School of Electrical Engineering,Nanjing Institute of Technology,Nanjing 211167,China;State Grid Jiangsu Electric Power Company Research Institute,Nanjing 211103,China)
出处
《电器与能效管理技术》
2018年第15期32-37,88,共7页
Electrical & Energy Management Technology
基金
国家自然科学基金项目(51707089)
国网江苏省电力有限公司科技项目(J2017038
J2018080)
关键词
配电网
柔性直流
控制策略
无源网络
实验样机
distribution network
flexible DC
control strategy
passive network
experimentalprototype
