计及线路保护反时限特性的备用优化模型  

Optimal reserve dispatch model considering inverse-time line protection

作　　者：李竹[1] 雷霞[1] 刘灵恺 白佩琳 李骊[1] 雷海[1] 

机构地区：[1]流体及动力机械教育部重点实验室(西华大学),四川成都610039

出　　处：《电力系统保护与控制》2017年第15期15-21,共7页Power System Protection and Control

基　　金：国家自然科学基金项目(51677020);四川省电力电子节能技术与装备重点实验室开放基金(szjj2014-015);西华大学研究生创新基金(ycjj2016159)~~

摘　　要：针对故障状态下传统备用配置比例较高而导致经济性差的特点,计及线路保护的反时限特性,建立了故障状态下电力系统备用协调经济调度模型。该模型以最小化发电成本和备用成本为目标函数,常规机组性能、网络安全等为约束条件,并结合线路保护的反时限特性将线路潮流约束按备用响应时间松弛转化为对应时间尺度可承受的热稳定极限值,从而综合求解不同响应速度备用的协调优化经济调度问题,提高备用配置的经济性。该模型是一个混合整数线性规划问题,需要将模型中的非线性式进行线性化或近线性化,并调用商用混合整数线性规划CPLEX求解器进行求解。最后,通过IEEE 6机30节点进行算例仿真,验证了该模型的合理性和方法的有效性。Due to poor economy caused by higher traditional reserve configuration, an economic dispatch model of reserve coordination at contingency state considering inverse-time characteristic of line protection is presented. The model aims to minimize the cost of generation and reserve under satisfying constraints of general unit and network security and combing with the inverse-time characteristic of line protection, relaxing general power flow constraints to thermal stability limit value of corresponding time scale according to reserve response time, then synthetically solve coordinated optimal reserve dispatch of different response speed to improve the economy of reserve configuration. The model is a mixed-integer linear programming problem, it needs to be linearized or nearly linearized in the model, and the commercial mixed-integer linear programming CPLEX solver is used to solve the problem. Finally, numerical experiences prove the rationality of the presented model and the effectiveness of the proposed approach in IEEE 30 systems.

关 键 词：事故状态 备用配置 反时限特性 经济调度 混合整数线性规划 

分 类 号：TM73[电气工程—电力系统及自动化] TM743TM773