级联式电流扰动发生装置的主电路设计

随着电力事业的发展,电能质量问题得到了越来越多的关注。为了在电能质量装置的设计实验阶段就详细分析和解决其在实际电网中可能遇到的各种问题,设计一种性能良好、可靠且功能多样化的扰动装置就成为必然的需求。文中介绍一种电压等级10 kV,容量3 MVA的电流扰动装置,主要用于模拟真实电网系统的各种电流环境。装置前端采用单位功率因数的全桥全空整流器,级联H桥拓扑用于产生所需的各种类型电流扰动源。文章着重介绍了装置各项参数的详细设计计算方法,并介绍了基于matlab/simulink的仿真结果,同时证明了文中所提出的设计方法的可行性和该装置投入使用的可行性。

Design of Cascaded Current Disturbance Generator

With rapid development of power grid around the world, power quality is gathering more and more attention. In order to analyze and solve the problems which the power quality equipment may encounter in its practical use, a well-developed, multi-functional and reliable disturbance generator is becoming an absolute need. This paper presents a 10 kV/3 MVA current disturbance generator that can be used to simulate various current situations of a practical grid. A three phase full bridge unity-power rectifier is employed to supply the DC voltage source while a cascaded multi-level H-bridge converter is used to generate the desirable current disturbance. Details about the parameter design of the components are also described. A simulation experiment is also conducted to verify the feasibility of the calculation and the equipment itself.