CAJ | 학술논문

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.
위료제고조도계화안전교핵적준학도화정세도,제출료일충기우상사일선택적조도계화안전교핵조류수거생성방법.근거후선기준방식여계화방식종합상사도최고원칙종상사일역사수거중사선출기준방식,재차기출상생성내망조류수거적탁복신식화무공전압수거.통과재조류계산질대과정중자동투퇴용항기,장계화방식모선전압공제재기준방식실제전압치부근,형성수렴적합리적내망조류수거.근거련락선일치차련락선조류최접근원칙종외망조류수거중사선출대병접적외망방식,재차기출상장내망조류수거화외망방식수거진행병접,통과조정외망조류만족변계절점전압화련락선유공약속,생성만족조도계화안전교핵적전망조류수거.통과실제전망응용,험증료해방법적실용성화유효성.
Power flow 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.