Benders算法在发电机无功储备管理中的应用  

Application of Benders Algorithm to Reactive Power Reserve Management of Generators

作　　者：李杰[1] 罗滇生[1] 李帅虎[1] 吴迎昌 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082

出　　处：《电力系统及其自动化学报》2016年第7期83-88,共6页Proceedings of the CSU-EPSA

摘　　要：电力系统的电压稳定性与系统中的无功储备密切相关。首先,建立了考虑N-1预想故障静态安全约束的发电机无功储备管理模型,并利用Benders算法将该模型分解为一个与正常运行方式相关的主问题和一系列与预想故障相关的子问题:主问题处理正常运行方式下的相关约束以及子问题所返回的Benders割约束,子问题处理一系列的预想故障及静态安全约束。其次,为提高Benders分解算法的求解效率,进一步提出了一种结合连续潮流方法的并行求解策略,减少了所需求解子问题的个数,仅返回一个Benders割至主问题。以IEEE 39节点系统作为算例,仿真结果验证了本文所提模型的正确性及求解策略的有效性。The voltage stability of power system is closely related to the reactive power reserve of generators. First,a reactive power reserve management model is proposed with static security constraints under N-1 contingency fault condi-tions. Benders algorithm is applied to decompose the proposed model into a master problem relevant to normal conditionand a series of subproblems relevant to N-1 contingency fault conditions：the master handles the constraints of normalcondition and the Benders cut returned by the subs,and the subs handle the static security constraints corresponding tocontingency fault. Second,to improve the solution efficiency of Benders algorithm,a parallel solution strategy combined with continuation power flow is given,thus the number of subproblems is reduced and only one Benders cut is returned to the master problem. A case study is conducted with IEEE 39-bus system,and the results show the correctnessof the model and the effectiveness of the proposed strategy.

关 键 词：电力系统 静态安全约束 无功储备 Benders算法 预想故障 

分 类 号：TM712[电气工程—电力系统及自动化]