凝结水调频技术在泰州电厂的应用

Application of Condensation Water Frequency Modulation Technology in Taizhou Power Plant

为了提高电能质量和电网频率的控制水平,迅速消除由于电网负荷变化而引起的频率波动,电网一般都要求发电机组具备在短时间内增加或减小一定量的出力以快速响应电网频率下降或上升的能力。凝结水节流参与机组负荷调节,能够有效挖掘机组蓄能、提高负荷变化能力,满足电网频率调整的要求。泰州电厂二期工程采用全周进汽超超临界二次再热汽轮发电机组,采用主汽调节阀节流进行负荷调节时节流损失很大,总结近年来凝结水节流技术在机组负荷调节上的成功经验,探讨将该技术运用在泰州电厂二期工程中的必要性和可行性。

In general, one of the requirements of power generation unit is to realize the alternation of the generated power output in response to the frequency verification of the power network. This aims to improve the electricity quality arid controllability of power network frequency, as well as a thst elimination of frequency fluctuations due to load changing of power netwoi＇k. Condensed water throttling contributes to the generation unit load regulation to meet the power network frequency requirement by improving the ability of unit energy storage and load changing. Full arc admission of ultra supercritical double-reheat steam turbine generator unit is adopted on the 2nd phase of Taizhou power plant project, main steam regulating valves throttle will cause a great loss. On the basis of latest experiences of condensed water throttling technology in generation unit load regulation, an investigation of feasibility and necessity of this technology applied in Taizhou power plant phase II will be under discussion in this paper.