风电并网对电力系统电压稳定的分岔影响

doi:10.11930/j.issn.1004-9649.2014.1.75.5

摘要/Abstract

摘要： 用延拓法对双馈机风电场和异步机风电场分别进行单参数和双参数分岔分析,推导了含有风电场及静止无功补偿器（SVC）情况下的系统潮流计算公式,并设计了追踪二维分岔曲线的方法,用时域仿真法对分岔分析的结果进行验证。通过在不同的风机模型及参数下进行时域仿真得到SVC影响系统分叉点的位置及电压失稳过程,结果表明时间常数越大,系统电压失稳的速度越快;在动态的异步机风电场模型下,等值机的惯性时间常数也影响系统的电压失稳过程,其时间常数越小,电压失稳的速度越快;在双馈机风电场模型下,功率因数不同,系统的传输极限及分岔值不同。

关键词: 静止无功补偿, 风电并网, 单参数分岔, 双参数分岔, 延拓法, 时域仿真法

Abstract: Continuation method is used in this paper to make a single-parameter and two-parameter bifurcation analysis respectively of the wind farms of double-feed induction generators and induction generators. A formula is derived for flow computations of power systems integrated with wind farms under static var compensator(SVC) conditions, and a method is designed for tracking the two-dimension bifurcation curves. The bifurcation results are verified by time-domain simulation Reactive power compensation is an important part in wind farm. The time-domain simulation with different wind generator models and parameters indicates that the SVC affects the location of bifurcation points and voltage instability process. The greater the time constant is, the faster the voltage instability process is. For the model of dynamic induction generator wind farms, the smaller the inertia time constant time is, the faster the voltage instability process. For double-feed induction generator wind farms, the transmission limits and bifurcation values are varied with different power factors.

Key words: static var compensator, wind farm, single-parameter bifurcation, two-parameter bifurcation, continuation method, time-domain simulation

中图分类号:

TM712

卢焕丽, 康积涛, 罗强. 风电并网对电力系统电压稳定的分岔影响[J]. 中国电力, 2014, 47(1): 75-80.

LU Huan-li, KANG Ji-tao, LUO Qiang. The Bifurcation Effect of Wind Farm on Voltage Stability of Power System[J]. Electric Power, 2014, 47(1): 75-80.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2014.1.75.5

https://www.electricpower.com.cn/CN/Y2014/V47/I1/75

参考文献

[1] 余洋,陈盈今,刘立卿,等. 大规模风电接入对电网电压稳定性影响的研究[J]. 电力科学与工程,2010,26（4）：1-4.
YU Yang, CHEN Ying-jin, LIU Li-qing, et al . Study on effect of voltage stability about large scale interconnected wind farm[J].Electric Power Science and Engineering, 2010, 26(4): 1-4.
[2] 范高锋,裴哲义. 2011年中国“三北”地区风电并网运行及反事故措施[J]. 中国电力,2012,45（12）：86-90.
FAN Gao-feng, PEI Zhe-yi. Wind power integrated operation and anti-accident measures in the Northern China in 2011[J]. Electric Power, 2012, 45(12): 86-90.
[3] 刘开俊. 风电并网对电网的影响分析及解决方案[J]. 中国电力,2012,45（9）：7-10.
LIU Kai-jun. Impacts and solutions of wind power integration on grids [J]. Electric Power, 2012, 45(9): 7-10.
[4] 裴哲义,董存,辛耀中. 我国风电并网运行最新进展[J]. 中国电力,2010,43（11）：78-82.
PEI Zhe-yi, DONG Cun, XIN Yao-zhong. Review of operation and management of integrating wind power in China[J]. Electric Power, 2010, 43(11): 78-82.
[5] 许珊珊,汤放奇,周任军,等. 不同风电系统动态电压稳定的分岔分析[J]. 电网技术,2010,34（5）：67-71.
XU Shan-shan, TANG Fang-qi, ZHOU Ren-jun, et al . Bifurcation analysis on dynamic voltage stability of power grid connected with different wind power systems[J]. Power System Technology,2010, 34(5): 67-71.
[6] 李季,周雪松,马幼捷. 基于Hopf分岔理论的风电系统电压稳定性研究[J]. 电气自动化,2011,33（5）：30-32.
LI Ji, ZHOU Xue-song, MA You-jie. Wind power system voltage stability research based on Hopf bifurcation theory[J]. Electric Automation, 2011, 33(5): 30-32.
[7] 问虎龙. 风电系统电压稳定性的多参数静分岔研究[D]. 天津:天津理工大学,2012.
[8] 彭志炜,胡国根,韩祯祥. 基于分岔理论的电力系统电压稳定性分析[M]. 北京：中国电力出版社,2005.
[9] 余贻鑫,王成山. 电力系统稳定性的理论与方法[M]. 北京：科学出版社,1999.
[10] 马幼捷,张继东,周雪松,等. 含风电电力系统电压稳定问题的分岔[J]. 电力系统及其自动化学报,2008,20（5）：117-122.
MA You-jie, ZHANG Ji-dong, ZHOU Xue-song, et al . Bifurcation of steady state voltage stability with wind power system [J]. Proceeding of the CSU-EPSA, 2008, 20(5): 117-122.
[11] SRIVASTAVA K N, SRIVASTAVAr S C, KALAR P K. Chaotic oscillation in power system under disburbance[C]// IEEE 2nd International Conference on Advances in Power Control, Operation and Management. Hong Kong: 1993.705-711.
[12] 李林. 基于连续潮流的电力系统电压稳定性研究[D]. 成都：西南交通大学,2011.
LI Lin. The study of power system voltage stability based on continuation power flow [D]. Chengdu: Southwest Jiaotong University, 2011.
[13] 杜晓明,赵冬梅. 改进连续潮流法追踪PV曲线[J]. 电网技术,2006,30（S1）:278-281.
DU Xiao-ming, ZHAO Dong-mei. An improved continuation power flow tracing PV curve[J]. Power System Technology, 2006, 30(S1): 278-281.
[14] 李珊. 基于动态分析法的电力系统电压稳定研究[D]. 成都：西南交通大学,2011.
LI Shan. Study of power system voltage stability based on dynamic analysis method[D]. Chengdu: Southwest Jiaotong University, 2011.
[15] 刘荆飞.基于间接法和直接法的电力系统电压稳定性研究[D].成都：西南交通大学,2008.
LIU Jing-fei. Research of voltage stability in power system based on indirect method and direct method[D]. Chengdu: Southwest Jiaotong University, 2008.
[16] CAO G Y, HILL D J, HUI R. Continuation of local bifurcations for power system differential-algebraic equation stability model[J].IEEE Proc. Gener. Transm. Distrib, 2005, 152(4): 575-580.
[17] 马幼捷,问虎龙,周雪松,等. 采用延拓法的风电系统稳定模型二维参数分岔边界的计算与研究[J]. 中国电机工程学报,2010, 30（19）:26-29.
MA You-jie, WEN Hu-long, ZHOU Xue-song, et al . Calculation and research of two-dimensional parameter bifurcation boundary of power system voltage stability model with wind farm by continuation method[J]. Proceedings of the CSEE, 2010, 30(19):26-29.