Dc Converter Station Smoothing Reactor Design And Installation Testing

As countries of ultra-high voltage engineering construction, our country has entered the ultra-high voltage grid, intelligent, big time. HVDC transmission (HVDC) is the use of stable dc has no inductance, RongKang doesn't work, without synchronization problem with advantages, such as high power dc transmission over long distances. HVDC transmission used for long distance or hook from transmission, commonly used on the sea bottom cable transmission, asynchronous communication system of running between contact, etc.Application HVDC transmission system, power level and direction all can get fast accurate control, can improve the performance that it is connected to the exchange network performance and efficiency, dc transmission systems have been widely applied. HVDC transmission is three-phase ac converter will through rectifier into d, and then through the dc transmission lines to another into the ac inverter three-phase converter transmission mode. It basically consists of two converter stations and dc transmission line composition, two converter stations and on both ends of the communication system in the connection.Dc transmission cost less than ac power lines but cost than exchange converter transformer substation is much higher. General overhead lines that more than 600-800 km, cable line more than 40 to 60 km dc transmission is ac power economy. With large capacity and high voltage controlled control and protection of the development of the technology, the commutation equipment cost gradually reduce dc transmission in recent years has developed rapidly. Our country the 1100 km+500 kV, a Shanghai HVDC project gezhouba, has built and put into operation. In addition, the span more than 2000 kilometers of xiangjiaba-Shanghai HVDC project also has already been done. This line is the longest in the world of HVDC transmission project.Dc converter stations is HVDC project of dc and ac each energy conversion system, unless the communication field and so on, and communication of the same substation equipment, dc converter stations and the following special equipment:flow changing device, the commutation transformer, ac&dc filter and reactive power compensation equipment, flat wave reactor. Flat wave filter reactor and dc high voltage dc converter stations dc together make up the side of the dc harmonic filter circuits. Flat wave general combination of reactor in each pole change the flow of dc output terminal and dc lines between, high voltage dc converter is one of the important equipment. This paper mainly introduces the dc converter stations flat wave reactor parameter calculation, testing and installation applications.