汽机一次调频转差与调频负荷关系的探讨

Relationship Between Primary Frequency Modulation Speed Difference and Primary Frequency Modulation Load for Steam Turbines

介绍了目前电调型带基本负荷汽轮机的一次调频转差与调频负荷关系曲线的设置情况。通过对汽轮机几种工况的分析,提出其关系曲线设置的要求,需要考虑对汽机低负荷工况的稳定,也要考虑在机组带基本负荷时受各种因素影响后实际的一次调频能力。分析表明,为满足这些要求,仅设置一组调频曲线是不够的。本文以HNHM电厂为例,对此提出设置方法及解决措施。

The setting is introduced on the relationship between primary frequency modulation speed difference and primary frequency modulation load for current modulated type steam turbines with base-load. By analyzing different conditions to steam turbines, the requirements for its curve setting are proposed. That is, it should not only consider the steady operation in the turbine low-load condition, but also consider the actual ability of primary frequency modulation affected by varied factors during unit ＇s operating with base-load. The analysis shows that it is not enough to set a group of frequency modulation curve in order to satisfy these requirements. Taking an example for HNHM Power Plant, the measures to solve the setting are brought forward therefore.