新型移动式低电压穿越测试装置设计与开发

Design and Development of a Mobile LVRT Testing Device

开发了一种基于电力电子技术的新型移动式低电压穿越测试装置。该装置克服了传统的电抗器式电压跌落发生器(VSG)体积大、精度难以控制、难以连续测试的缺点。针对光伏电站分散接入电网的特点,该测试平台具有灵活的移动性能。笔者对其工作原理、软硬件结构、功能特性进行了介绍,并在实验室进行了实验研究分析,验证了该装置的有效性和实用性,同时进行了实际的工程测试,效果良好。

A new type LVRT testing device based on power electronics technology is developed. Comparing with traditional reactor VGS, the device overcomes many drawbacks, including bulky, difficult to control precision, and difficult to continuously testing. Considering the characteristics of distributed accessing grid of the photovohaic power station, the designed testing platform has the capability of flexible mobile performance. Working principle, hardware and software structures, and features have been introduced in this paper. Meanwhile, testing verification and data analysis also have been conducted in the laboratory. Based on those procedures, the device has been verified for having excellent capability of effectiveness and practicality. Over the same period, the device has been applied and tested on site, which also got the excellent result as well as in laboratory.