基于等风险度法的电网直流融冰计划决策  

Decision-making of Power Grid DC De-icing Plan Based on Equal-risk Method

作　　者：陈亮[1] 李兴源[1] 傅闯 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]南方电网科学研究院,广东广州510080

出　　处：《四川大学学报（工程科学版）》2015年第2期158-164,共7页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家科技支撑计划资助项目(2009BAA23B02-2);南方电网科技项目资助(K-KY2012010)

摘　　要：针对电网直流融冰计划的编制需兼顾系统安全及线路安全的问题,提出了基于等风险度法的电网直流融冰计划决策方法。该方法以等期望切负荷量为目标函数,结合已确定的线路直流融冰计划及约束条件,按照线路重要性综合指标依次安排各线路的融冰时段。每次决策时,若出现强受制性线路需优先安排,然后按蒙特卡罗方法计算所选线路可融冰时段的期望切负荷量并安排在其值最小时段。一条线路的融冰时段确定后,更新剩余待安排线路的约束条件,进入下一线路融冰时段的决策。此外,融冰紧急性作为约束条件用以保障线路的安全性。最后,贵州电网的实例验证了方法的有效性和可行性。In order to ensure system security when a number of transmission lines were on DC de-icing meanwhile and avoid heavy icecoating on lines,a decision-making method of power system DC de-icing plan based on equal-risk was proposed. In this method,the equal expected load-shedding was the objective function,under the constraints and on the basis of the existing dc de-icing plan,lines' de-icing time slots were determined by sequence. After DC de-icing time slot of a line was determined,the constraints of the rest lines need be updated and then DC de-icing decision-making of the next line was started. During each decision-making,the strongly restricted lines were arranged with first priority,then the selected line was arrange into the time slot with lowest expected load-shedding which was calculated according to Monte Carlo method. In addition,the urgency of DC de-icing was the constraint for the safety of the line. Finally,the example of Guizhou power grid verified the feasibility and effectiveness of the method.

关 键 词：直流融冰计划 系统安全 融冰紧急性 期望切负荷量 等风险度法 

分 类 号：TM752[电气工程—电力系统及自动化]