关于某电厂AVC指标异常分析与无功分配策略的优化调整任虎,卫蒲龙(晋能孝义煤电有限公司,山西孝义032300)摘要:针对#2机组AVC指标异常下降情况进行分析,仿真验证其为无功分配方式不合理引起,在#1机组低负荷运行工况AVC调节闭锁,AVC装置采用等功率因数无功分配策略,导致#2机组正常调节的分配无功偏少,出现指标不合格情况,需通过优化无功分配策略实现更好的适应性。当前火电机组承担电网负荷调谷角色已成常态,机组运行工况越来越复杂,通过AVC无功分配策略的及时调整,可以更好地应对电网对机组的运行调整要求,避免AVC指标考核。关键词:AVC;调节合格率;无功分配策略中图分类号:TM761DOI:10.19768/j.cnki.dgjs.2022.24.073AnalysisofAVCIndexAbnormityandOptimizationofReactivePowerDistributionStrategyinaPowerPlantRENHu,WEIPulong(JinnengXiaoyiCoalPowerCo.,Ltd.,Xiaoyi032300,China)Abstract:TheabnormaldropofAVCindexofUnit#2wasanalyzed,andthesimulationverifiedthatitwascausedbyunreasonablereactivepowerdistributionmode.UnderthelowloadoperationconditionofUnit#1,AVCregulationwasblocked,andAVCdeviceadoptedthereactivepowerdistributionstrategyofequalpowerfactor,whichresultedinlessdistributedreactivepowerundernormalregulationofUnit#2andunqualifiedindicators.Itwasnecessarytooptimizethereactivepowerdistributionstrategytoachievebetteradaptability.Atpresent,ithasbecomenormalforthermalpoweru-nits...