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江厦潮汐电站位于浙江温岭县江厦港。该港为乐清湾北端的封闭的半日浅海港,最大潮差8.39米,海水含沙量少。电站利用了已建“七一”塘围垦工程的堤坝和水闸,其主要建筑物有海堤、泄水闸、厂房和开关站等(如图1～4)。电站的总库容为493万米~3,以单库双向开发,即机组双向(涨、落潮)发电和双向泄水运行,初设规模有6台500千瓦贯流灯泡式机组,年电量1070万度。电站除以发电为主,还兼有海涂围垦,水产养殖和交通等效益。现将设计中的几个主要问题及其运行情况介绍如下。
Jiangxia tidal power station is located in Wenling County, Zhejiang Jiangxia Port. The harbor is a closed half-day shallow harbor at the northern end of Yue Ching Wan with a maximum tidal range of 8.39 meters and a low sediment concentration. The power plant has utilized dikes and sluices of the “July 1” pond reclamation project. Its main structures include seawalls, sluices, workshops and switch stations (Figures 1-4). The total capacity of the power station is 4.93 million m ~ 3, with a two-way development of single bank, that is, bidirectional (up and down ebb) power generation and two-way discharge operation of the unit. The initial scale is 6 500kW tubular lamp units with annual power of 10.7 million degree. Power plants divided by power generation, but also both tidal flat reclamation, aquaculture and transport and other benefits. Now the design of several major issues and their operation are described below.