發(fā)布時間：2018-05-11 13:10

  本文選題：超導可控電抗器 + PSCAD��； 參考：《昆明理工大學》2014年碩士論文

【摘要】：本文依托科技項目《超導可控電抗器在電網中的應用研究》,主要介紹了飽和鐵芯型超導可控電抗器和高漏抗型超導可控電抗器兩種類型的超導可控電抗器,分析了它們的結構原理；建立飽和鐵芯型可控電抗器的電磁模型,借助220V/20A的飽和鐵芯型可控電抗器樣機進行試驗分析,為飽和鐵芯型超導可控電抗器在高電壓等級輸電系統(tǒng)中建立等效模型奠定基礎。 本文首先仿真研究分析超導可控電抗器對線路甩負荷、不對稱故障時過電壓的影響,該類型電抗器利用其連續(xù)平滑調節(jié),響應速度快的特點對線路甩負荷、不對稱故障過電壓有較好的抑制作用;結合云南電網實際情況,選擇德宏-硯山這條較為典型的輸電線路,利用該條線路在不同運行方式下潮流數據,研究探討它在這條線路首端、末端電壓偏高嚴重地區(qū)投入可控電抗器對龜壓的調節(jié)作用,通過仿真分析發(fā)現(xiàn)超導可控電抗器能在該線路各種運行方式下快速有效的實現(xiàn)電壓調節(jié),保持節(jié)點電壓的平衡；將超導可控電抗器接入發(fā)電機端,通過仿真發(fā)現(xiàn),它能夠在保持系統(tǒng)無功平衡的同時,穩(wěn)定機端電壓,改善發(fā)電機進相運行情況；在PSCAD中搭建超高壓仿真模型,在線路的首端、末端均裝設并聯(lián)高抗,并采用并聯(lián)電抗器加中性點可控小電抗的協(xié)調控制方法,其中中性點小點抗采用超導可控電抗器,在線路中設置單相故障,通過仿真分析,我們發(fā)現(xiàn)并聯(lián)高抗與中性點可控小電抗的方法,能夠在不同補償度下較好抑制潛供電流。
[Abstract]:This paper mainly introduces two types of superconducting controllable reactors: saturated iron core type superconducting controllable reactor and high leakage reactance type superconducting controllable reactor based on the scientific and technological project "Research on the Application of Superconducting controllable reactor in Power Grid". The structure principle is analyzed, the electromagnetic model of the saturated iron core controllable reactor is established, and the experimental analysis is carried out with the help of the 220V/20A prototype of the saturated iron core controllable reactor. It lays a foundation for the establishment of equivalent model of superconducting controllable reactor with saturated iron core in high voltage level transmission system. In this paper, the influence of superconducting controllable reactor on line load rejection and over-voltage during asymmetric fault is studied by simulation. This type of reactor uses its characteristics of continuous smooth adjustment and fast response to load rejection. The asymmetric fault overvoltage has a good restraining effect, combined with the actual situation of Yunnan Power Grid, the more typical transmission line Dehong Yanshan is selected, and the power flow data of this line under different operation modes are used. In this paper, the regulating effect of controllable reactor on tortoise voltage at the first end of this line is studied, and the terminal voltage is on the high side. Through the simulation analysis, it is found that the superconducting controllable reactor can quickly and effectively adjust the voltage and maintain the balance of the node voltage under various operation modes of the line, and the superconducting controllable reactor is connected to the generator terminal, and the simulation results show that, It can stabilize the terminal voltage while maintaining the reactive power balance of the system, and improve the forward phase operation of the generator. The EHV simulation model is set up in PSCAD, and the parallel high reactance is installed at the first end and the end of the line. The coordinated control method of parallel reactor and neutral-point controllable small reactance is adopted, and the superconducting controllable reactor is used to control the neutral-point resistance. The single-phase fault is set up in the circuit, and the simulation analysis is carried out. We find that the method of parallel high reactance and neutral-point controllable small reactance can restrain the potential supply current well under different compensation degrees.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM47

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本文編號：1874058