Exploration on 6kV Phase II and III Auxiliary Power System Liaison Application  

电厂6kV二三期厂用电系统联络应用探索

作　　者：SUN Jianguo YU Jinwei KUANG Liu DONG Yalin 

机构地区：[1]HuanengHuaiyinPowerPlant,Huai'anJiangsu223001,China

出　　处：《外文科技期刊数据库(文摘版)工程技术》2021年第12期316-321,共9页

摘　　要：The phase I unit of power plant was shut down, thus the public system operation unit in the plant is used for power supply. The modified technique greatly increased the power consumption of public system. The 330MW coal-fired unit has no competitive advantage, but the whole plant is forced to conduct single-machine operation because of social responsibility of heating and sludge mixing. The single-machine operation of power plant leads to a large off-grid power settlement amount, and it is impossible to carry out normal starting transformers maintenance, which influences the safety and business benefits of power plant. In this paper, the technique perfection of 6kV phase II and III auxiliary power system liaison is proposed to improve the flexibility of auxiliary power system and realize the mutual backup of two starting transformers, which greatly reduce the off-grid settlement power. Meanwhile, it can give full play to the role of energy storage assisted AGC frequency modulation system and improve the stability of power grid. After demonstration and practical operation test, the safety and economy are obviously improved.

关 键 词：6kV public auxiliary power liaison off-grid power settlement amount energy storage assisted AGC FM 

分 类 号：F426[经济管理—产业经济]