逆变器在分布式发电系统并网的无功控制应用

Reactive Power Control of Grid-connected Converter in the Distributed Generation System

分布式发电技术是一种新型的、具有广阔发展前景的发电和能源综合利用方式。并网分布式发电系统的无功控制将对电网产生重要影响。利用分布式发电系统并网逆变器的数学模型,研究了其有功、无功解耦控制方法,可在容量范围内实现无功功率的独立调节,在此方案的基础上进行了仿真。研究表明,分布式发电系统的无功控制方法有利于充分发挥分布式发电的积极作用,减轻分布式发电对配电网的不利影响,使电力系统更加高效、可靠地运行。

Distributed generation（DG） is a new technology with nice prospect,which is always connected with distribution system.The grid-connected inverter of distributed generation model is set up.To achieve the reactive power regulation independently,the active and reactive power decoupled control are researched.Then the simulation and experiment results are also presented.The research on the reactive power control of the distributed generation is of certain value to the DG application in practice.The purpose is to achieve the positive applications,lighten the negative affection of DG and make the system more efficient and reliable.