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以三峡右岸(哈电机组)、龙滩、小湾、构皮滩(东电机组)、金安桥、拉西瓦、彭水电站的7台大型水轮发电机的主保护设计为例,说明多分支大型水轮发电机应根据每相分支数(偶数或奇数分支)和故障特点的不同来实现主保护定量化设计过程的合理简化,即偶数(或奇数)多分支水轮发电机主保护的设计过程可归纳为一个每相2分支(或3分支)的水轮发电机主保护配置方案的设计,其分支的合理分组(相邻或相隔方式)取决于发电机实际可能发生的内部故障特点。相关设计规则的总结大大减少了设计计算的工作量。
Taking the main protection design of seven large-scale hydroelectric generators on the right bank of the Three Gorges (Ha-Ha unit), Longtan, Xiaowan, Goupitan (Dong-Dong Motor), Jin’anqiao, Laxiwa, Pengshui hydropower station as an example, Large hydrogenerators should be reasonably simplified in the process of quantitatively designed main protection according to the number of branches per phase (even or odd branches) and fault characteristics, that is, the design of the main protection for even (or odd) multi-branch hydrogenerators The process can be summarized as the design of a main hydro-generator protection scheme with 2 branches per phase (or 3 branches). The reasonable grouping of branches (adjacent or separated) depends on the actual internal fault characteristics of the generator. The summary of relevant design rules greatly reduces the workload of design calculation.