【摘要】：機(jī)電-電磁混合仿真旨在一次仿真過(guò)程中能同時(shí)實(shí)現(xiàn)對(duì)大規(guī)模電力系統(tǒng)的機(jī)電暫態(tài)過(guò)程仿真和對(duì)局部網(wǎng)絡(luò)的電磁暫態(tài)過(guò)程仿真,可以在節(jié)省計(jì)算資源的前提下保證局部系統(tǒng)的仿真精度。然而,現(xiàn)代電力網(wǎng)絡(luò)交直流系統(tǒng)的強(qiáng)耦合與復(fù)雜化給混合仿真技術(shù)帶來(lái)了更大的挑戰(zhàn),其仿真結(jié)果的精度直接影響到電網(wǎng)的安全經(jīng)濟(jì)運(yùn)行,精度評(píng)估方法研究具有重要的理論意義和工程價(jià)值。本文首先總結(jié)了電力系統(tǒng)機(jī)電暫態(tài)仿真和電磁暫態(tài)仿真兩種方法的特點(diǎn),對(duì)兩種仿真方法的數(shù)學(xué)模型和計(jì)算進(jìn)行了對(duì)比分析,簡(jiǎn)要介紹了機(jī)電-電磁混合仿真的基本原理和分類(lèi),增強(qiáng)了對(duì)混合仿真的理論認(rèn)識(shí)。其次對(duì)現(xiàn)有的電力系仿真精度評(píng)估方法進(jìn)行了簡(jiǎn)要介紹,對(duì)幾種常用的精度評(píng)估分析方法,特別是IEEE std 1597.1中的特征選擇驗(yàn)證法(Feature Selective Validation, FSV)和Prony方法,進(jìn)行了原理介紹和算例實(shí)現(xiàn),并進(jìn)一步分析了各自方法的適用性。然后結(jié)合混合仿真評(píng)估的主要觀測(cè)物理量特征,基于FSV方法和Prony分析法,提出了一套適用于機(jī)電-電磁混合仿真的精度綜合評(píng)估方法,對(duì)應(yīng)于IEEE std 1597.1的六等級(jí)指標(biāo)實(shí)現(xiàn)了對(duì)混合仿真的三級(jí)定量和定性評(píng)估,此外基于Matlab/GUI研發(fā)了相應(yīng)的仿真精度評(píng)估軟件。最后結(jié)合南方電網(wǎng)復(fù)雜交直流耦合系統(tǒng)的實(shí)際情況,應(yīng)用該方法進(jìn)行評(píng)估和對(duì)比分析了在六機(jī)14節(jié)點(diǎn)雙端口測(cè)試電路系統(tǒng)、六機(jī)24節(jié)點(diǎn)四端口測(cè)試電路系統(tǒng)及南網(wǎng)2014年豐大運(yùn)行方式下“八交八直”的混合仿真系統(tǒng)與對(duì)應(yīng)全電磁仿真系統(tǒng)上的典型故障仿真實(shí)驗(yàn)數(shù)據(jù),結(jié)果驗(yàn)證了所提精度綜合評(píng)估方法的有效性與適用性。
[Abstract]:The mechatronics-electromagnetic hybrid simulation is designed to simultaneously simulate the electromechanical transient process of large-scale power system and the electromagnetic transient process of local network in a single simulation process. The simulation accuracy of the local system can be guaranteed on the premise of saving computing resources. However, the strong coupling and complexity of the AC / DC system in modern power network brings more challenges to the hybrid simulation technology. The accuracy of the simulation results directly affects the safe and economic operation of the power network. The research of precision evaluation method has important theoretical significance and engineering value. In this paper, the characteristics of electromechanical transient simulation and electromagnetic transient simulation of power system are summarized, and the mathematical model and calculation of the two simulation methods are compared and analyzed. The basic principle and classification of mechatronic-electromagnetic hybrid simulation are briefly introduced, and the theoretical understanding of hybrid simulation is enhanced. Secondly, the existing accuracy evaluation methods of power system simulation are briefly introduced, and several commonly used precision evaluation methods, especially (Feature Selective Validation, FSV) and Prony methods of feature selection verification in IEEE std 1597.1, are introduced in this paper. The principle is introduced and an example is given, and the applicability of each method is further analyzed. Based on FSV method and Prony analysis method, a set of precision comprehensive evaluation methods for mechatronics-electromagnetic hybrid simulation is proposed, which is based on the characteristics of the main observational physical quantities of hybrid simulation. Corresponding to the six-level index of IEEE std 1597.1, the three-level quantitative and qualitative evaluation of hybrid simulation is realized. In addition, the corresponding simulation accuracy evaluation software is developed based on Matlab/GUI. Finally, combined with the actual situation of the complex AC / DC coupling system in Southern China Power Grid, the method is used to evaluate and compare and analyze the test circuit system in the six machines and 14-node dual-port system. Six-machine 24-node four-port test circuit system, "eight alternating points and eight straight" hybrid simulation system and typical fault simulation experiment data on corresponding all-electromagnetic simulation system under Fengda operation mode of Southern Power Network in 2014. The results show that the proposed method is effective and applicable.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TM743

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本文編號(hào)：2471094