获取电力系统运行方式的多平衡机潮流模型  

Multi-balancing Machine Load Flow Models for Obtaining Power System Operation Mode

作　　者：杜正春[1] 王延延[1] 王毅[1,2] 张睿[1] 

机构地区：[1]西安交通大学电气工程学院,陕西省西安市710049 [2]中国电力科学研究院,北京市100192

出　　处：《电力系统自动化》2014年第16期41-46,87,共7页Automation of Electric Power Systems

基　　金：国家电网公司大电网重大专项资助项目(SGCC-MPLG030-2012)~~

摘　　要：提出了制定大规模电力系统运行方式的三种多平衡机潮流模型。通过设置多台平衡机分摊全系统不平衡功率来提高潮流计算收敛域。与常规潮流计算方法相比,只需采用控制方程替换平衡机的功率平衡方程即可得到适定的多平衡机潮流方程式。所提出的模型不但可以扩大潮流求解的收敛域,还可以满足对运行方式的特殊要求:维持中枢点电压为指定值,灵活控制各平衡机出力比例,实现多区域互联系统断面功率控制。所提出的多平衡机潮流模型阶数与常规潮流模型相同,因此其求解的复杂性保持不变。IEEE 162节点系统、陕甘1 265节点互联系统以及国内实际21 479节点系统的计算结果验证了所提出模型的正确性和有效性。Three multi-balancing machine load flow models for planning the operation mode of the large-scale power system are presented.The mismatch power of the entire system is apportioned by several slack nodes to improve the convergence region. Differ from conventional load flow model,by replacing the power balancing equations of the balancing machines,we can derive the properly constrained multi-balancing machines load flow equations. The proposed models can not only enlarge the convergence domain of load flow,but also satisfy special requirements of the operation mode such as maintain the central bus voltage as the designated value,flexibly distribute the power of balancing machines and control the cross section power of the interconnected system.Since the order of the load flow equations of the proposed models is the same as that of the conventional model,the calculation difficulty of the proposed models remains unchanged.Simulation results of an IEEE 1 62-bus system, the Shaanxi-Gansu 1 265-node interconnected system and the actual large-scale 21 479-node interconnected system show the correctness and effectiveness of the proposed models.

关 键 词：电力系统 运行方式 潮流计算 多平衡机 

分 类 号：TM744[电气工程—电力系统及自动化]