D-STATCOM装置算法研究及其在油田配电网应用中的若干关键问题的解决的论文.doc

摘 要 PAGE I PAGE I 摘 要 随着我国经济的快速发展，电力系统中大量的非线性、冲击性和不平衡负荷不断增加，广大用户对动态电能质量的要求日益提高。D-STATCOM的输出电流在很大的电压变化范围内恒定，可实现从感性到容性全范围内的连续调节，具有输出感性无功和容性无功的双向调节能力，也即D-STATCOM可以实现对不平衡负荷和谐波负荷的补偿及谐波的有效治理，研发工业化D-STATCOM装置从而改善电能质量，已成为现代电力新技术发展的一个重要方向。本文致力于D-STATCOM装置算法研究及其在油田配电网应用中的若干关键问题的解决。 文章作者通过对D-STATCOM装置基础算法的分析，提出一种基于等效系统的直接脉冲发生算法，通过对性能的分析，提出并实现系统波形的改善；通过对算法中惯性环节不合理、负有功时负载电流过小等问题的分析解决以及降低IGBT功耗来达到降低装置功耗，提高了装置本身运行效率；还通过增加相序自动识别软件、调试测试组态软件来解决工程应用中调试不方便问题。 此外，本文对所研制的并联电压型三桥臂装置D-STATCOM进行了动态模拟实验和现场试运行。实验结果表明该装置能实现无功补偿和谐波治理，装置的可靠性和稳定性明显提高，基本能满足在油田应用中的需要。 最后，分析了现有装置的缺陷和不足，指出了装置工业化有待改进的地方。 关键词：无功补偿；电能质量；谐波治理；D-STATCOM；PWM Abstract Abstract With the developing of national economy, a large of nonlinear, impinge and unbalanced load are increasing since people for the high requirement about dynamic power qualities. Output current of D-STATCOM keeps invariant in great range of voltage variation which can realize continuous adjustments from sensitive to tolerate and the bi-directional adjustment ability about sensitive active power and tolerate reactive power output. Then, D-STATCOM can manage compensation harmonic wave of unbalanced load harmonic load effective, improves power quality with developing industrialization D-STATCOM which have become one of important direction of modern power new technique development. This paper is focus on the resolutions of D-STATCOM device calculation research and application of the oil-field distribution net. The author suggests a direct pulse generate calculation bases on equivalent by research of D-STATCOM device calculation. Point out and realize system waveform improve by analyze its function, lower device power loss by resolute unreasonable inertial link in calculation, over small load current with under active power, raises operation effective itself, raise of device operation effective. Otherwise, it also increase councilors sequence auto-recognize program and debugging test model to resolute inconvenient of debug. Furthermore, this paper also c