| 引用本文: | 桂林,王祥珩,张群刚,奚瑜.水轮发电机主保护配置方案设计[J].电力自动化设备,2007,27(2):6-10 |
| .Design of main protection configuration scheme for hydro-generator[J].Electric Power Automation Equipment,2007,27(2):6-10 |
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| 摘要: |
| 以每相7分支的拉西瓦发电机(单机700 MW)主保护的定量化设计为例,说明奇数多分支大型水轮发电机主保护设计与偶数多分支发电机的不同之处:首先应立足于如何使用不完全裂相横差保护,即根据发电机实际可能发生的故障特点,舍弃每相某一分支的同时实现对剩余偶数分支的合理分组(相邻或相隔方式);其次在不增加任何硬件投资的前提下,通过合理选择零序电流型横差保护的构成形式,可以对不完全裂相横差保护的保护性能起到很好的补充作用。相关设计思想将在奇数多分支大型水轮发电机主保护的设计中继续得以验证和完善。 |
| 关键词: 大型水轮发电机,奇数分支,主保护配置方案,定量化及优化设计 |
| DOI： |
| 分类号:TM772 |
| 基金项目: |
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| Design of main protection configuration scheme for hydro-generator |
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GUI Lin WANG Xiang-heng ZHANG Qun-gang XI Yu
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| Abstract: |
| Taking the quantitative design of main protection for Laxiwa hydro-generator with seven branches per phase as an example,differences between the design for hydro-generator with odd branches and that for even branches are pointed out.The incomplete split-phase transverse differential protection should be used first to abandon one branch per phase according to possible fault features of different hydro-generators and the left even branches per phase are reasonably grouped at adjacent or alternating mode.The composition of zero-sequence current transverse differential protection is then rationally selected to supplement the protection performance to incomplete split-phase transverse differential protection without additional hardware investment.The quantitative and optimum design will be verified and improved during its practices in large-sized hydro-generators with odd branches. |
| Key words: large-sized hydro-generator,odd branches,main protection configuration scheme,quantitative and optimum design |
