基于功率信号阶跃修正的供热机组AGC优化  

Heating Units AGC Optimization based on Power Signal Step Correction

作　　者：居国腾 金康华 姚坤 万杰[2] 牛玉广 JU Guo-teng;JIN Kang-hua;YAO Kun;WAN Jie;NIU Yu-guang(Zhejiang Zheneng Shaoxing Binhai Thermal Power Co., Ltd., Shaoxing 312073, China;Harbin Institute of Technology, Harbin 150001, China;The State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University), Beijing 102206, China)

机构地区：[1]浙江浙能绍兴滨海热电有限责任公司,浙江绍兴312073 [2]哈尔滨工业大学,黑龙江哈尔滨150001 [3]新能源电力系统国家重点实验室(华北电力大学),北京102206

出　　处：《节能技术》2019年第4期376-380,共5页Energy Conservation Technology

基　　金：新能源电力系统国家重点实验室开放课题(LAPS19012);浙江省能源集团有限公司科技项目(NO.ZNKJ2017003);国家重点研发计划项目(No.2017YFB0902101)

摘　　要：为了保持变负荷速率设置在正常范围内的基础上,实现机组AGC性能综合提升且最大程度减小对机组使用寿命影响的目标,提出了一种基于实际功率信号阶跃修正的AGC前馈优化技术。通过AGC指令与实际功率指令偏差设置阶跃补偿回路,对去往汽轮机主控制器的功率偏差信号进行动态修正,并依据电网“两个细则”标准及机组容量设置补偿参数。实际机组应用结果显示:该方法在减小变负荷速率大小设置至正常值的条件下,可以充分利用高调门储能,实现对AGC指令的良好跟踪,减少了电网对机组的考核。所以,该方法具有极大的应用价值和工程推广应用意义。In order to keep the variable load rate in a normal range, minimize the impact on unit life and achieve the goal of comprehensive improvement of AGC performance, an AGC feedforward optimization technique based on step correction of actual power signal is proposed. By setting the step compensation loop for the deviation between the AGC command and the actual power command, the power deviation signal to the main controller of the steam turbine is dynamically corrected, and the compensation parameters are set with the unit capacity and the rules for power grid. The actual application shows that the method can fully utilize of energy storage in HP valves. Within a normal rate, unit can achieve good tracking of the AGC command and reduce the assessment of the grid. Therefore, this method has significant application value.

关 键 词：汽轮机 前馈补偿 动态修正 AGC指令 变负荷速率 

分 类 号：TK263.7[动力工程及工程热物理—动力机械及工程]