| 引用本文: | 史昭娣,张靠社,黄越辉,杨硕,邱成建.基于Hopf分岔的风电集群系统电压稳定分析[J].电力系统保护与控制,2017,45(14):9-16.[点击复制] |
| SHI Zhaodi,ZHANG Kaoshe,HUANG Yuehui,YANG Shuo,QIU Chengjian.Analysis of voltage stability in wind power cluster system based on Hopf bifurcation[J].Power System Protection and Control,2017,45(14):9-16[点击复制] |
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| 摘要: |
| 针对大规模风电场集群接入后电力系统动态无功电压稳定问题，在DIgSILENT/Power Factory中建立了计及风功率波动特性的风电场动态模型? 改进了传统微分代数方程(Differential Algebra Equation, DAE)模型，提出一种基于Hopf分岔的改进连续潮流法(Continuation Power Flow, CPF)与时域仿真相结合的动态分析法? 采用一种快速计算系统稳定裕度的算法，通过双参数“两步法”追踪系统二维Hopf分岔曲线，分析风电集群地区无功补偿设备动态响应特性及电压控制效果? 对新疆哈密地区实际风电集群系统仿真结果表明:基于静态延拓法的鞍节分岔点(Saddle Node Bifurcation, SNB)稳定裕度高于基于CPF与动态时域仿真追踪的Hopf分岔点，所提方法能快速计算Hopf分岔点，准确计算风电集群系统电压稳定极限? |
| 关键词: 风电集群系统 时域仿真 动态模型 Hopf分岔 电压稳定性 |
| DOI：10.7667/PSPC161101 |
| 投稿时间：2016-07-19修订日期：2016-09-12 |
| 基金项目:国家自然科学基金项目(51277056);国家科技支撑项目(2015BAA01B01,2015BAA01B02);青海省光伏并网技术重点实验室项目(2014-Z-Y34A) |
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| Analysis of voltage stability in wind power cluster system based on Hopf bifurcation |
| SHI Zhaodi,ZHANG Kaoshe,HUANG Yuehui,YANG Shuo,QIU Chengjian |
| (Xi’an University of Technology, Xi’an 710048, China;China Electric Power Research Institute, Beijing 100192, China) |
| Abstract: |
| In order to study dynamical voltage stability of wind farms cluster, in this paper, the dynamic model of wind farm with active power fluctuation is established in DIgSILENT/Power factory. The traditional differential algebra equation (DAE) model is improved. A dynamic analysis method is proposed which combines the continuation power flow (CPF) and time domain simulation (TDS) method based on bifurcation theory. A fast algorithm is proposed for computing the stability margin of the system, and the proposed method tracks the two dimensional Hopf bifurcation (HB) curves of system by using a two parameter so-called ‘two-step’ method. It analyses and compares the dynamic response properties and voltage control capability of the wind cable set area between different power compensation devices. The simulation results of a certain WFC in Hami, Xinjiang Province indicate that the stability margin of saddle node bifurcation (SNB) based on static continuation method is more optimistic than HB based on CPF combined with dynamic TDS. The proposed analytical method is a fast direct method to obtain the HB, as well as can calculate voltage stability limit of wind farm accurately. This work is supported by National Natural Science Foundation of China (No. 51277056), National Key Technology Program (No. 2015BAA01B01 and No. 2015BAA01B02), and Key Laboratory of Photovoltaic Technology of Qinghai Province (No. 2014-Z-Y34A). |
| Key words: wind farms cluster (WFC) time domain simulation dynamic model Hopf bifurcation voltage stability |
