基于VSC的柔性互联电网潮流解耦算法研究

张朝学; 邹晓松; 袁旭峰; 熊 炜; 余梦天; 李芷萧; 刘隽楷

张朝学,邹晓松,袁旭峰,熊炜,余梦天,李芷萧,刘隽楷.基于VSC的柔性互联电网潮流解耦算法研究[J].电测与仪表,2019,56(19):13-18.
Zhang Chaoxue,Zou Xiaosong,Yuan Xufeng,Xiong Wei,Yu Mengtian,Li Zhixiao,Liu Junkai.Research on power flow decoupling algorithm for flexible interconnected power grid based on VSC[J].Electrical Measurement & Instrumentation,2019,56(19):13-18.

基于VSC的柔性互联电网潮流解耦算法研究

Research on power flow decoupling algorithm for flexible interconnected power grid based on VSC

DOI：

中文关键词: 柔性互联电网电压源换流器交替迭代法耦合关系解耦算法

英文关键词:Flexible interconnected power grid, Voltage source converter, Alternating iterative method, Coupling relationship, Decoupling algorithm

基金项目:国家自然科学基金(51667007);中国南方电网有限责任公司重点科技项目(GZKJQQ00000417);贵州省科技创新人才团队项目([2018]5615),Guizhou Province Science and Technology Innovation Talent Team Project([2018]5615)

作者中文名	作者英文名	单位
张朝学	Zhang Chaoxue	贵州大学电气工程学院
邹晓松	Zou Xiaosong	贵州大学电气工程学院
袁旭峰	Yuan Xufeng	贵州大学电气工程学院
熊炜	Xiong Wei	贵州大学电气工程学院
余梦天	Yu Mengtian	贵州大学电气工程学院
李芷萧	Li Zhixiao	贵州大学电气工程学院
刘隽楷	Liu Junkai	贵州大学电气工程学院

摘要点击次数: 1210

中文摘要:

基于交替迭代的交直流潮流计算是柔性互联电网研究的基础,其能灵活适应电压源换流器(voltage source converter, VSC)的各种控制方式,且对成熟的交流潮流计算方法具有良好的继承性。但此算法由于交、直流系统间存在耦合关系,需要交替进行多次迭代。对此,本文首先分析换流器稳态模型及其常用控制方式、直流电网潮流稳态模型,随后推导出柔性互联系统交替迭代法及交替迭代法需要进行多次交替迭代的原因,提出了一种基于VSC的柔性互联电网潮流解耦算法。在不重新划分交、直流系统界限的基础上,通过对VSC有功控制参量的两次处理,继承了交替迭代法优点的同时,可避免进行多次交替迭代,使得潮流计算更加简洁且更贴近实际模型,从而使柔性互联电网潮流计算量大为减小。最后,通过IEEE9节点和IEEE30节点交流测试系统形成的两个柔性互联系统算例,验证本文所提算法的有效性和准确性。

英文摘要:

AC and DC power flow calculation based on alternate iteration is the basis of flexible interconnected power grid research. It can adapt to various control modes of voltage source converter (voltage source converter, VSC), and have good inheritance for the mature AC flow calculation method. However, due to the coupling relationship between AC and DC systems, the algorithm needs to be iterated alternately. This paper first analyzes the steady state model of the converter and its common control mode, the steady state model of the DC power grid, and then derives the reasons that the alternating iterative method and alternate iterative method of the flexible interconnected system need to be iterated many times. A new VSC based power flow decoupling algorithm for the flexible interconnected power grid is proposed. On the basis of not redividing the boundary of the AC and DC system, by the two processing of the active control parameters of the VSC, the advantages of the alternating iterative method are inherited and the alternating iteration can be avoided, which makes the power flow calculation more concise and closer to the actual model, so that the calculation of the power flow of the flexible interconnected power grid is greatly reduced. Finally, the effectiveness and flexibility of the proposed algorithm are verified by two flexible interconnected systems formed by IEEE9 nodes and IEEE30 nodes.

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