PDF《流限制的改进连续 进连续》

电网技术 2011, 35(2) 43-47 DOI: ISSN: 1000-3673 CN: 11-2410/TM 本期目录 | 下期目录 | 过刊浏览 | 高级检索 [打印本页] [关闭] 电电电电力系 力系 力系 力系统 统统统扩扩扩扩展功能 展功能 展功能 展功能 本文信息 Supporting info PDF(512KB) [HTML全文] 参考文献[PDF] 参考文献 服务与反馈 把本文推荐给朋友 加入我的书架 加入引用管理器 引用本文 Email Alert 文章反馈 浏览反馈信息 本文关键词相关文章 本文作者相关文章 PubMed 考考考考虑发电 虑发电 虑发电 虑发电机 机机机励 励励励磁 磁磁磁电 电电电流限制的改 流限制的改 流限制的改 流限制的改进连续 进连续 进连续 进连续潮流算法 潮流算法 潮流算法 潮流算法 刘刘刘刘楠 印永 楠 印永 楠 印永 楠 印永华 华华华马马马马世英 世英 世英 世英 刘刘刘刘涛 涛涛涛中国电力科学研究院,北京市 海淀区

100192 摘要 摘要 摘要 摘要: 连续潮流法是静态电压稳定分析中强有力的方法和工具.

常规的连续潮流程序中,使用发电机无功出力最大值 Qmax近似表征其无功出力限制.在实际系统中,发电机的无功出力受制于励磁电流的调节能力.从稳态角度出 发,提出了使用发电机内电势Eq近似表征无功出力限制的处理方法,建立了考虑励磁电流限制的静态电压稳定分 析模型,并提出改进的连续潮流算法.该算法在考虑发电机无功出力最大值Qmax的基础上,将无功出力达到最 大值的节点视为有功、内电势恒定(P-Eq)节点.该节点根据有功出力、功角值以及机端电压对校正环节中的无功 出力进行修正,更好地模拟了发电机在励磁电流限制下的无功特性.IEEE-30节点系统仿真结果证明了该方法的 可行性和实用性. 关键词 关键词 关键词 关键词: An Improved Continuation Power Flow Algorithm Considering Generator Excitation Current Limit LIU Nan,YIN Yonghua ,MA Shiying , LIU Tao China Electric Power Research Institute, Haidian District, Beijing 100192, China Abstract: Continuation power flow (CPF) is a powerful analytical methodology and tool in static voltage stability analysis. Engineer may use P-V method for general voltage stability evaluation, contingency screening, etc. The benefits of this methodology is that it provides an indication of proximity to voltage collapse throughout a range of load levels or interface path flows for the simulated system topology. The reactive power resources are needed to supply the requirements of customer demands and the reactive power losses in the transmission and distribution systems, and provide adequate system voltage support and control. Therefore, the modeling of generator reactive power limit is very important in CPF. The reactive power characteristic under generator excitation current limit were discussed;

Based on the former generator reactive power limit treatment, a new method of reactive power dispatch under the excitation current limit adapted in CPF calculation was given out;

Simulation used the improved algorithm were done. The simulation results of the IEEE

30 system show that the proposed model is effective and rational. Keywords: 收稿日期 收稿日期 收稿日期 收稿日期 2010-03-19 修回日期 修回日期 修回日期 修回日期 2010-07-06 网网网网络 络络络版 版版版发 发发发布日期 布日期 布日期 布日期 2011-02-16 DOI: 基金 基金 基金 基金项 项项项目 目目目: 通通通通讯 讯讯讯作者 作者 作者 作者: 刘楠 作者 作者 作者 作者简 简简简介 介介介: 作者 作者 作者 作者Email: [email protected] 参参参参考文 考文 考文 考文献 献献献: : : : [1] Ejebe G C,Tong J.Available transfer capability calculation[J].IEEE Trans on Power Systems, 1998,13(4):81-87. [2] 赵晋泉,张伯明.连续潮流及其电力系统稳定分析中的应用[J].电力系统自动化, 2005,29(11):91-97. Zhao Jinquan,Zhang Boming.Summarization of continuation power flow and its application in static stability analysis of power system[J].Automation of Electric Power Systems, 2005,29(11):91-97(in Chinese). [3] Christy C A.The continuation power flow:a tool for steady state voltage stability analysis[J].IEEE Trans on Power Systems,1992,7(1):416-423. [4] 周双喜, 冯治鸿,杨宁.大型电力系统PV曲线的求取[J].电网技术,1996,20(8):4-8. Zhou Shuangxi,Feng Zhihong,Yang Ning.Seeking PV curves in bulk power systems[J].Power System Technology, 1996,20(8):4-8(in Chinese). [5] Canizares C A,Alvarado F L.Point of collapse and continuation methods for large AC/DC systems[J].IEEE Trans on Power Systems,1993,8(1):1-8. [6] 祝达康, 程浩忠.求取电力系统PV曲线的改进连续潮流法[J].电网技术,1999,23(4):91-97. Zhu Dakang, Cheng Haozhong.A modified continuation power flow method for computing PV curve of power system [J].Power System Technology,1999,23(4):91-97(in Chinese). [7] Feng Z,Ajjarapu V,Long B. Identification of voltage collapse through direct equilibrium tracing[J].IEEE Trans on Power Systems, 2000,15(1):83-87. [8] Lof P A,Andersson G,Hill D J.Voltage dependent reactive power limits for voltage stability studies[J].IEEE Trans on Power Systems,1995,10(1):10-13. [9] 李传栋,鄂志君, 杨金刚.电力系统电压稳定极限的分区求解算法[J].电网技术,2008,32(24):39-45. Li Chuandong,E Zhijun,Yang Jingang.A new calculation method for static voltage stability limit of large-scale power system[J].Power System Technology,2008,32(24):39-45(in Chinese). [10] 王刚,张雪敏,梅生 伟.基于近似连续潮流的在线电压稳定分析[J].电力系统自动化,2008,32(11):6-11. Wang Gang, Zhang Xuemin,Mei Shengwei.On-line voltage stability analysis based on approximate continuation power flow[J].Automation of Electric Power Systems,2008,32(11):6-11(in Chinese). [11] 张元 鹏,周双喜,王利锋,等.静态电压稳定分析中的动态元件模型及其实现[J].中国电机工程学报,2000,20 (3):66-71. Zhang Yuanpeng,Zhou Shuangxi,Wang Lifeng,et al.The model of dynamical components and its realization of study on static voltage stability analysis[J].Proceeding of the CSEE, 2000,20(3):66-71(in Chinese). [12] Kundur P.Power system stability and control[M].New York: McGraw-Hill Inc,199........