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- The producing conditions and effects of islanding in grid-connected PV system are studied.There is NDZ problem in the conventional methods of islanding detecting. 分析了光伏并网发电逆变系统出现孤岛状况的条件和负面效应,对传统的孤岛检测方法进行了比较。
- Desired islanding detection method not only can detect islanding within acceptable duration,but also require it has less adverse impact on power quality. 孤岛检测是光伏系统并网必备的功能,要求既能快速检测出孤岛状态,同时又尽量减少对电网的不良影响。
- Among all the passive and active islanding detection method,the active frequency drift method is pretty attractive. 孤岛检测是光伏并网发电系统所必备的功能。
- Finally, the simulation results show that the proposed islanding detection method is effective and practical. 最后,仿真结果验证了提出的孤岛检测方法的快速性和有效性。
- In the paper a novel active islanding detection algorithm is proposed based on Simulation and experiment. 提出了一种新的基于分布式并网发电系统的主动式孤岛检测方法,进行了仿真和实验研究。
- And also, it has many other functions include islanding detection and avoiding, over voltage protection, over current protection and so on. 此逆变器还具有其他功能,包括孤岛效应,过电压欠电压保护,过流保护等等。
- A new method for islanding detection is presented, and the status of the islanding can be detected by the change of the frequency of the load voltage. 提出一种利用无功补偿技术进行并网发电系统孤岛检测的方法,通过对负载电压频率的判断即可有效检测是否进入孤岛状态。
- I'd buy an island if I had lots and lots of money. 果真我有许多许多钱,我就买一个小岛。
- Nobody has ever set foot on that island. 没有人曾经登上过那个岛屿。
- This island is no longer a dependency of the USA. 这个小岛不再是美国的属地。
- Wales is in the southwest of the British Island. 威尔士在大不列颠岛的西南部。
- The island is noted for its summer resort. 这个岛以避暑胜地而著称。
- The mountainous island loomed on the horizon. 那座巨大的岛屿隐隐约约浮现在地平线上。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙,未见有龋齿。
- He was the only human being on the island. 他是那个岛上唯一的人。
- The island is still undeveloped. 这座岛屿未得到充分开发。
- I seemed to detect some anger in his voice. 我似乎在他的声音中听出一些怒气。
- This island is triangular in shape. 这个岛的外形呈三角形。
- Criminals are kept in the cages on this island. 刑事犯被关在岛上的牢房里。
- Radar is used to detect objects in the air or at sea. 雷达被用来探测空中或海上的目标。