超临界640MW直流炉协调控制策略优化

发布时间：2018-01-06 09:23

本文关键词：超临界640MW直流炉协调控制策略优化　出处：《江西电力》2016年12期 　论文类型：期刊论文

更多相关文章： 直流炉 协调控制 超临界 AGC

【摘要】：贵溪电厂三期1、2号机组采用的是ALSTOM的汽轮机,其DEH控制系统限制条件多、过载阀流量特性快对机组主汽压影响大,加之燃烧煤种与设计煤种偏差大且煤种本身差异大等因素,导致机组在试运期间出现几次限制器动作迫降负荷,协调控制系统对AGC指令响应慢,达不到电网调度中心对AGC指令的要求,稳态时主汽压偏差大,升降负荷时过热度波动大等问题,影响机组安全运行和经济性。为此,在原控制策略的基础上,结合工程实际,提出合理的控制策略,采用并行前馈、动态参数补偿、引入直接能量平衡信号、智能加煤加水等手段对控制策略进行优化。优化后在350~510 MW之间进行大幅度负荷扰动及AGC试验,试验结果表明该协调系统的调节品质符合部颁标准,能够满足机组运行和电网的要求。
[Abstract]:The Guixi power plant three 1,2 unit is the ALSTOM turbine DEH control system of its many restrictions. The flow characteristics of the overload valve quickly on the unit main steam pressure effect, and the combustion of coal and coal and design large deviation of coal itself differences and other factors, resulting in the unit test run several times limiter action landing the load period, the coordinated control system of AGC instruction of slow response, not up to the requirements of the dispatching center of AGC instructions, large deviation of the main steam pressure steady, too large fluctuation of heat lifting load, the safe operation of unit and economy. For this, based on the original control strategy, combined with the engineering practice and put forward reasonable control strategy, using parallel feedforward, dynamic parameter compensation, the introduction of direct energy balance signal, intelligent water coal and other means of control strategy optimization. Large amplitude load disturbances in 350~510 MW after optimization The dynamic and AGC test results show that the regulating quality of the coordinated system meets the standards issued by the Ministry and meets the requirements of the operation of the unit and the power grid.

【作者单位】：江西水利职业学院;国网江西省电力公司电力科学研究院;
【分类号】：TM621
【正文快照】： 0引言江西贵溪电厂“上大压小”工程装备两台640 MW超临界燃煤直流炉机组。锅炉为哈尔滨锅炉厂有限责任公司自主研发的新型墙式切圆燃烧超临界参数、变压运行直流炉,一次中间再热、单炉膛平衡通风、露天布置、固态排渣、全钢构架、全悬吊结构Π型锅炉,制粉系统采用6台中速磨煤

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