大中型发电机主保护配置方案定量化及优化设计的重要性

大中型发电机主保护配置方案的设计是一个多目标的工程优化设计问题，必须兼顾设计的科学性和实用性，为此应根据发电机定子绕组结构的不同而采取不同的优化设计过程，不能以容量相等或相近为理由而互相搬用主保护配置方案。掌握发电机定子绕组内部故障的仿真计算方法是主保护配置方案定量化及优化设计的基础。以实际工程为例。运用多回路分析法进行内部故障的仿真，在定量分析基础上得到了设计简单且性能优越的主保护配置方案，并通过定量和定性分析指出其连接方式也取决于实际可能发生的内部故障特点。

Importance of quantitative and optimum design of main protection configuration scheme for large and medium generator

The design of main protection configuration scheme for large and medium generator is a kind of optimum design of multipurpose project ,in which scientific and practical requirements must be met simultaneously.Different optimum design processes should be adopted according to the stator winding constructions of different generators.The simulation calculation of the internal stator winding faults is the basis of quantitative and optimum design of main protection configuration scheme.With a practrical project as an example ,the multi-loop method is used in the simulative calculation of internal fault.A simple main protection configuration scheme with perfect performance is achieved based on quantitative analysis.According to the quantitative and qualitative analysis ,it is pointed out that the connection is determined by the features of possible internal faults.