8
doi:10. 3969/j. issn. 1009 3230.2017.06. 003
应用能源技术
2017年第6期（总第234期）
发电厂供热改造工程背压汽轮发电机接入主机厂
用电的问题及其建议探讨
裴英凯，雷富刚
（国电荥阳煤电一体化有限公司，郑州450199）
摘要：传统的火电厂以凝汽式汽轮发电为主，然后再进入汽轮机加工，接着汽轮机带动发电机进行发电，做工后的蒸汽经凝汽器冷却后变成水，在紧接着送入锅炉进行继续加工。背压机组取消了凝汽器，汽轮机做工后的蒸汽直接送到热用户，因此背压机是以热负荷来调整发电负荷的发电机组，也就是说发电量跟着外界供蒸汽的多少来变化的，汽轮机进了多少汽机组排多少汽，所以说背压汽轮机的经济型较好。增加背压发电机组导致了系统短路电流超过了原设备允许值，增加了系统设备发生动、热损坏的风险。快速限流器的应用抑制了系统扩容导致的短路电流，保证了主机厂用电安全。
关键词：供热改造：背压汽轮发电：短路电流：快速限流器中图分类号：TM611.31
文献标志码：B文章编号：1009-3230(2017)06-0008-04
PowerPlantHeatingReconstructionProjectBackPressure SteamTurbine
GeneratorAccessHosts,ElectricityProblemsandSuggestions
PEI Ying kai,LEI Fugang
(Guodian Xingyang Electricity Integration Co.,Ltd.Zhengzhou 450199,China.)
Abstract: Traditional coal fired power plants is given priority to with condensing steam turbine generator, and then enter the turbine processing, then the steam turbine tums a generator to generate electricity, steam after work into after the condenser cooling water, to continue to manufacture in and then into the boiler. Canceled the condenser back pressure unit, of the steam turbine work after heat directly to the user, so the back - pressure machine is based on the heat load to adjust power load of generator set, that is to say power how to change with the outside world for steam, the steam turbine aaiouooaiadeeoseaseaoeauaneasenono Increasing back pressure generating set leads to more than the original equipment system short circuit current value, increases the system equipment dynamic and themal damage risk. Rapid current limiter.
Key words: Heating transformation; Back pressure steam turbine power generation; Short circuit current; Rapid current limiter
引言 0
供热改造工程为实现热能的阶梯利用，设计有 2台额定容量为12MW的背压汽轮发电机（以下筒
收稿日期：20170510
修订日期：20170520
作者介：装美凯，国电荣阳煤电一体化有限公司，主要从
事火电厂运行与技术管理工作。
万方数据
称小发电机），所发电量同期并人主机厂用电。 1系统概况
每台机组配置一台高压厂用工作变压器，采用63/36-36MVA的分裂变压器。高压厂用变压器为无励磁调压方式，厂用变压器的电压为22 ±2×2.5%/6.3-6.3kV，变压器电源由发电机