【摘要】：近年來,無功補償技術不斷發(fā)展,技術日益完善、功能越發(fā)全面,應用覆蓋面也非常廣泛,同時無功補償技術更加趨于智能化,并且無功補償裝置的體積也越來越小。靜止同步補償器作為功能最為全面的無功補償裝置是研究的重點課題,STATCOM的優(yōu)點是調(diào)節(jié)速度更快、諧波少、體積小、調(diào)節(jié)能力強,這些特點都是其他補償裝置無法比擬的。因此,現(xiàn)在STATCOM是國內(nèi)外研究的焦點。由于STATCOM屬于非線性、多元化系統(tǒng),在控制策略中時常存在耦合現(xiàn)象,導致控制性能不穩(wěn)定。同時STATCOM具有時變性,屬于動態(tài)系統(tǒng),而常規(guī)PI控制參數(shù)很難整定,并且PI控制器存在動態(tài)響應時間長、過沖大等缺點,嚴重影響控制精度和魯棒性。針對這些問題,本文采用瞬時功率控制,并進行相應的解耦,來解決耦合現(xiàn)象,提高控制性能；同時本文設計了模糊PI控制器,不但擁有模糊控制魯棒性強、適應性強的特點,也兼?zhèn)淞顺Ｒ?guī)PI控制簡單的優(yōu)點。最后通過仿真和實驗進行分析,證明STATCOM控制系統(tǒng)的控制性能穩(wěn)定,完成了預期目標所設定的補償值。同時本文介紹無功補償?shù)母艣r及STATCOM國內(nèi)外發(fā)展現(xiàn)狀,分析了STATCOM動態(tài)數(shù)學模型,并對STATCOM控制系統(tǒng)及模糊控制器進行介紹和設計。最后對實物進行現(xiàn)場數(shù)據(jù)搜集并進行分析。
[Abstract]:In recent years, the reactive power compensation technology has been developing, the technology is becoming more and more perfect, the function is more comprehensive, the application coverage is also very extensive, at the same time, the reactive power compensation technology tends to be more intelligent, and the volume of the reactive power compensation device is becoming smaller and smaller. As the most comprehensive reactive power compensation device, static synchronous compensator has the advantages of faster regulation speed, less harmonics, smaller volume and better regulating ability, which are unparalleled by other compensators. Therefore, STATCOM is the focus of research at home and abroad. Because STATCOM belongs to nonlinear and multiplex systems, there is often coupling phenomenon in control strategy, which leads to unstable control performance. At the same time, the STATCOM is time-varying and belongs to the dynamic system, but the conventional PI control parameters are difficult to adjust, and the PI controller has the shortcomings of long dynamic response time and overshoot, which seriously affect the control accuracy and robustness. To solve these problems, this paper uses instantaneous power control and decoupling to solve the coupling phenomenon and improve the control performance. At the same time, a fuzzy PI controller is designed, which not only has the characteristics of strong robustness and adaptability of fuzzy control. It also has the advantages of simple control of conventional PI. Finally, through the analysis of simulation and experiment, it is proved that the control performance of the STATCOM control system is stable and the compensation value set by the expected target is achieved. At the same time, this paper introduces the general situation of reactive power compensation and the development of STATCOM at home and abroad, analyzes the dynamic mathematical model of STATCOM, and introduces and designs the STATCOM control system and fuzzy controller. At last, the field data collection and analysis are carried out.
【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM761.12

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