摘要
介绍了一种数字仿真与实物变流器相结合的分布式并网发电研究平台。利用实时数字仿真系统(RTDS)搭建的电力系统模型,通过功率放大装置,模拟电网的接入点,并连接小功率并网变流器。该平台用于研究变流器与电网间的相互作用及相互影响,具有能模拟电网故障及变流器不同工况的功能,解决了实际电网实验困难,成本高等问题,具备非常高的灵活性和安全性。使用该平台,模拟了向电网注入有功,并通过变流器控制手段稳定并网点电压的测试,取得了与理论分析相同的结果,证明了该平台的可操作性。
This paper introduces the distributed grid-connected generation researching platform, which connects digital simulation with converters. The real-time digital system （RTDS） is used to build the power system model. The signal from RTDS is amplified by the power amplifier, and the amplifier regarded as the access point of simulating grid can connect with small power converter. We can use the platform to research the interaction and interplay between the grid and converter. The platform can simulate grid fault and different operation conditions of the converter, and solve the problem of difficult experiment and high cost of the real grid. It is flexible and safe. We use the platform to simulate the test that the DSP controls the converter to put active power into the simulating grid, and stabilize the voltage in the connecting point. The result of the test agrees with that of theoretical analysis, which proves that the operation of the platform is reliable.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第20期130-134,139,共6页
Power System Protection and Control
