安全约束经济调度中有功潮流调整方法  

A method of active power flow adjustment in security constrained economic dispatch

作　　者：黄国栋[1] 崔晖[1] 许丹[1] 丁强[1] 翟晓磊[2] 

机构地区：[1]中国电力科学研究院,北京100192 [2]天津市电力公司电力调度控制中心,天津300010

出　　处：《电力系统保护与控制》2016年第4期91-96,共6页Power System Protection and Control

摘　　要：计算电网的计划潮流是安全约束经济调度的重要内容。针对计划潮流中外网等值粗糙、结果偏差较大的问题,提出了一种改进的安全约束经济调度中有功潮流调整方法。首先获取计划数据和网络模型,进行无网络约束计划编制,然后结合准稳态灵敏度、联络线自适应等值和有功平衡等方法计算计划潮流,如果潮流越限则增加网络安全约束重新编制计划。该方法简单易行,能提高计划潮流精度,为计划编制提供可信的潮流信息。通过实际工程算例测试表明,该方法能满足实用要求,具有良好的可靠性和实用性。Schedule power flow calculation is an important part of the security constrained economic dispatch （SCED）. General foreign net equivalent is rough and the results are of large deviations, therefore an improved method of active power flow adjustment in security constrained economic dispatch is proposed. First, the schedule data and the network model are acquired to make power generation plan without security constrained. Then schedule power flow is calculated under consideration of sensitivity with quasi-steady state, tie line adaptive equivalence and active power balance. Making new power generation plan with security constrained is needed when active power of line is off-limit. The method is simple and can improve the accuracy of schedule power flow and provide credible information for power generation plan. Test results on the practical engineering examples show that the method can meet the practical requirements, with good reliability and practicality.

关 键 词：安全约束经济调度 计划潮流 联络线等值 准稳态灵敏度 

分 类 号：TM73[电气工程—电力系统及自动化]