基于相似日选择的调度计划安全校核潮流数据生成  

Power flow data generation of security check for scheduling plans based on similar day selection

作　　者：周海锋[1] 徐伟[1] 鲍颜红[1] 郭剑[1] 严明辉[1] 汪马翔[1] 

机构地区：[1]南瑞集团公司/国网电力科学研究院,江苏南京211000

出　　处：《电力系统保护与控制》2015年第18期87-93,共7页Power System Protection and Control

基　　金：国家电网公司科技项目"输电线路在线动态增容技术研究与应用";"计及电网安全稳定性的输变电设备风险评估与运维管理决策技术研究与应用"

摘　　要：为了提高调度计划安全校核的准确度和精细度,提出了一种基于相似日选择的调度计划安全校核潮流数据生成方法。根据候选基准方式与计划方式综合相似度最高原则从相似日历史数据中筛选出基准方式,在此基础上生成内网潮流数据的拓扑信息和无功电压数据。通过在潮流计算迭代过程中自动投退容抗器,将计划方式母线电压控制在基准方式实际电压值附近,形成收敛的合理的内网潮流数据。根据联络线一致且联络线潮流最接近原则从外网潮流数据中筛选出待拼接的外网方式,在此基础上将内网潮流数据和外网方式数据进行拼接,通过调整外网潮流满足边界节点电压和联络线有功约束,生成满足调度计划安全校核的全网潮流数据。通过实际电网应用,验证了该方法的实用性和有效性。Power gow data generation based on similar day selection is proposed to improve the accuracy and fineness of security check for scheduling plans. Integrated similarity degree is defined to select basic operation mode from historical operation modes of similar days. Topology information, reactive data and generator voltage data are extracted from basic operation mode. Bus voltage can be kept near the voltage value in the basic operation mode through auto-switching of reactors and capacitors during power flow calculation to form converged and reasonable internal network power flow data. Operation mode of external network with similar boundary nodes is selected with largest integrated similarity degree. The whole power flow data is generated through the joint of external and internal network power flow data. External network is adjusted to maintain the boundary node voltage and tie line power as the value of internal network. Real engineering applications in actual power grid have fully confirmed the practicality and validity of this method.

关 键 词：相似日 调度计划 安全校核 数据整合 潮流调整 

分 类 号：TM73[电气工程—电力系统及自动化]