发布时间 : 星期日 文章基于PSCAD的STATCOM对电力系统短路故障影响仿真分析更新完毕开始阅读c650175ba66e58fafab069dc5022aaea998f41bc
目 录
绪论 ......................................................................................................................... 1 1.本文研究的主要目的及意义 .............................................................................. 1
1.1论文研究背景和研究的意义 .................................................................... 1 1.2本文研究的主要内容 ................................................................................ 2 2 STATCOM的工作原理及数学模型 .................................................................. 2
2.1 STATCOM的基本电路结构 .................................................................... 2 2.2 STATCOM的工作原理 ............................................................................ 3 2.3 STATCOM的数学模型的建立 ................................................................ 6 3 无功功率检测方法和STATCOM的控制策略 ................................................ 9
3.1 无功功率检测方法 ................................................................................... 9
3.1.1 d-q矢量变换理论 ......................................................................... 10 3.1.2 三相对称系统的瞬时无功功率 ................................................... 12 3.2 STATCOM装置的控制方法 .................................................................. 13
3.2.1 直接电流控制 ............................................................................... 13 3.2.2 间接电流控制 ............................................................................... 14 3.2.3 电流间接与直接控制的特点 ....................................................... 15
4 STATCOM的仿真 ............................................................................................ 15
4.1仿真的主接线图 ...................................................................................... 15 4.2 仿真的主控制电路图 ............................................................................. 16 4.3 仿真的调制电路图 ................................................................................. 18 4.4 各仿真的波形图 ..................................................................................... 19 4.5 本章小结 ................................................................................................. 20 5 总结与展望 ....................................................................................................... 20
5.1结论 .......................................................................................................... 20 5.2展望 .......................................................................................................... 20 参考文献： ........................................................................................................... 22 致 谢 .................................................................................. 错误！未定义书签。
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Directory
Introduction ............................................................................................................. 1 1 The main purpose and significance of this study ................................................. 1
1.1Research background and significance of the research ............................... 1 1.2The main contents of this paper .................................................................. 2 2 The working principle and mathematical model of STATCOM .......................... 2
2.1 STATCOM basic circuit structure .............................................................. 2 2.2 Working principle of STATCOM ............................................................... 3 2.3 The establishment of STATCOM model .................................................... 6 3 Reactive power detection and STATCOM control strategy ................................. 9
3.1 Reactive power detection method .............................................................. 9
3.1.1 D-q vector transformation theory ................................................... 10 3.1.2 Instantaneous reactive power for three-phase symmetric systems 12 3.2 STATCOM control method ...................................................................... 13
3.2.1 Direct current control ..................................................................... 13 3.2.2 Indirect current control ................................................................... 14 3.2.3 The characteristics of indirect current and direct control ............... 15
4 STATCOM simulation........................................................................................ 15
4.1 Main wiring diagram of simulation.......................................................... 15 4.2 Master control circuit diagram of simulation ........................................... 16 4.3 Simulation modulated circuit diagram ..................................................... 18 4.4 Simulation waveform chart ...................................................................... 19 4.5 Summary of this chapter .......................................................................... 20 5 Summary and Prospect ....................................................................................... 20
5.1 Conclusion................................................................................................ 20 5.2 Outlook ..................................................................................................... 20 Reference： ........................................................................................................... 22 Thanks .................................................................................. 错误！未定义书签。
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摘要：电能质量的问题，尤其是无功功率和谐波的问题，严重威胁着电网的安全运行。静止同步补偿器（STATCOM）作为新一代无功功率补偿装置，它与现有的静止无功补偿装置(SVC)相比，具有调节速度更快、运行范围更宽、吸收无功连续、谐波电流小、损耗低、所用电抗器和电容器容量及安装面积大为降低等优点，引起了国内外科研与工程领域的广泛关注。论文通过对STATCOM的现状和发展趋势的分析，结合无功的产生和影响以及分析无功补偿的意义，进行了针对STATCOM工作原理的研究，并建立了STATCOM的数学模型，采用基于瞬时无功功率理论的检测方法，选择合适的控制策略，在PSCAD环境下进行了仿真分析，得出仿真后的波形。仿真结果表明STATCOM能够对负荷进行快速地无功补偿，证实了本模型算法的合理性、正确性，具有一定的参考价值。
关键词：无功补偿； 静止同步补偿器；瞬时无功； PSCAD/EMTDC；
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Simulation and analysis of the short-circuit fault of power system
based on STATCOM PSCAD
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Guofeng Liu
(Mechanical & Electrical Engineering College of Shandong Agricultural University, Tai’an, Shandong
271018)
Abstract The problem of electric energy quality menaces seriously the safe operation of power network, especially reactive power and harmonics. The static synchronous compensator
(STATCOM), takes the new generation reactive power compensation system, it compares with existing static idle work compensation system (SVC), has the adjustable speed to be quicker, the movement scope to be wider, the absorption idle work, the harmonic current small, to lose continuously low, uses the reactor and the capacity of condenser and the erection space to reduce and so on merits greatly, has caused the domestic and foreign scientific research and the project domain widespread attention.The paper through to the STATCOM present situation and the trend of development, the idle work production and the influence, the idle work compensation's significance's analysis, has conducted the STATCOM principle of work research, and has established the STATCOM mathematical model, uses based on the instant reactive power theory examination method, chooses the appropriate control policy, has carried on the simulation analysis under the PSCAD environment, after obtaining the simulation profile. The simulation result indicated that STATCOM can shoulder carries on fast the idle work compensation, confirmed that this model algorithm's rationality, the accuracy, have certain reference value.
Keywords: Reactive power compensation; STATCOM; Instantaneous reactive; PSCAD/EMTDC;
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