再生能源发电系统接入电网时需要考虑的一些问题

Some Issues Regarding Grid-Integration of Renewable Power Generation Systems

介绍了几种典型的再生能源发电系统接入电网时的一些要求,对可能遇到的工程问题,宜从原动机、电机、换流器以及电力系统等不同的角度综合考虑.除了电网的要求以外,连接方式还应考虑发电系统的特点,包括原动机工作原理和发电机类型,以及电源与电网之间的相互作用和故障时的保护等.介绍了再生能源发电系统,主要是大型风力、海浪及潮汐系统的一些特殊要求,简单分析了再生能源发电系统在接入电网时解决某些问题的方法.

Some requirements for typical gridintegrations of renewable power generation systems are introduced. Comprehensive considerations about primary converters and generators should be taken for solving the problems which may appear in engineering. In addition to the requirements for gridintegration, other factors of the power generation system should be taken into account such as the power takeoff mechanism of the primary converters, the characteristics of the generators, the transient interactions between generators and the grid, and the protection schemes against faults. Some special requirements concerning renewable power generation system, such as large wind, sea wave and tidal systems, are also introduced, and some existing and potential techniques related to gridintegration are analyzed.