直流炉一次调频控制策略研究与应用  

Study and application of control strategy for primary frequency regulation of once-through boiler

作　　者：沙友平[1] 吕剑虹[2] 张斌[3] 高爱民[3] 何育生[3] 管春雨 

机构地区：[1]华能南京电厂,江苏南京210055 [2]东南大学动力系,江苏南京210096 [3]江苏省电力科学研究院,江苏南京210036

出　　处：《中国电力》2003年第1期63-66,共4页Electric Power

基　　金：国家自然科学基金(50076008);江苏省青年科技基金(BQ2000002)资助项目。

摘　　要：直流炉由于蓄热能力小,使其一次调频能力受到限制。针对华能南京电厂1、2号直流炉机组,在详细测试和分析直流炉机组动态特性的基础上,通过仿真比较,确定了直流炉机组一次调频的控制策略。实际运行表明,改进后的一次调频控制系统有效地协调了直流炉和汽轮机间的能量平衡,使在由于一次调频引起机组功率快速升、降的过程中仍能维持较好的机前压力,确保了一次调频控制系统的长期、稳定投入。Since once-through boiler has only a small heat storage capacity,its primary frequency regulation capability is limited.On the basis of testing and analyzing the dynamic characteristics of No.1and No.2boiler units in detail in Huaneng Nanjing Power Plant ,through simulation comparison,an appropriate control strategy for the primary frequency regulation of once-through boiler unit was proposed in this paper.The practical running results showed that this improved primary frequency regulation control system could effectively keep the energy balance between once-through boiler and steam turbine.Hence in the process of promptly increasing or decreasing the unit's load under the action of primary frequency regulation control system,the throttle pressure before the steam turbine could be maintained in the safe range,thus ensuring the long-time stable operation of primary frequency regulation control system.

关 键 词：直流炉 一次调频 控制策略 动态特性 协调控制系统 

分 类 号：TM621.6[电气工程—电力系统及自动化]