【摘要】：伴隨著科技的發(fā)展,大量的用電設(shè)備給人們的生產(chǎn)生活帶來(lái)方便同時(shí),隨之而來(lái)的是大量的無(wú)功功率的出現(xiàn)。進(jìn)入新世紀(jì),用電系統(tǒng)中大量的電力電子器件的使用,對(duì)于用電質(zhì)量的要求也是越來(lái)越高。無(wú)功功率的存在致使電壓的穩(wěn)定性降低,電網(wǎng)的功率因數(shù)降低,嚴(yán)重影響到人們?nèi)粘５纳a(chǎn)活動(dòng),所以無(wú)功公功率的補(bǔ)償對(duì)于改善用電質(zhì)量有著很重要的意義,另一方面無(wú)功功率的減少,相應(yīng)的用電消耗也在減少,經(jīng)過(guò)用電設(shè)備的電流得到減小不論從經(jīng)濟(jì)角度還是綠色環(huán)保的角度都有著積極的意義。TSC(晶閘管投切電容器)作為容量較大,經(jīng)濟(jì)成本較低的補(bǔ)償方式,其缺點(diǎn)主要為只能吸收感性無(wú)功,另一方面不能夠精細(xì)的補(bǔ)償,補(bǔ)償?shù)淖钚∮嗔渴艿诫娙荽笮〉挠绊憽TATCOM (靜止同步補(bǔ)償器)反應(yīng)速度快,可以實(shí)現(xiàn)對(duì)無(wú)功功率的連續(xù)補(bǔ)償,并且可以對(duì)容性、感性的無(wú)功功率進(jìn)行補(bǔ)償,但其控制復(fù)雜,大容量的STATCOM設(shè)備制造成本居高不下�；诖吮疚慕Y(jié)合了兩種設(shè)備的優(yōu)點(diǎn),提出了 STATCOM+TSC的混合型無(wú)功補(bǔ)償?shù)脑O(shè)計(jì)方案。在對(duì)STATCOM和TSC的基本原理進(jìn)行深入分析的基礎(chǔ)上,并針對(duì)本設(shè)計(jì)進(jìn)行了適合的選型。對(duì)于無(wú)功電流的檢測(cè)方面,對(duì)比了傅里葉無(wú)功功率算法、p-q無(wú)功功率算法、ip-iq無(wú)功功率算法,分析了各自的特點(diǎn),針對(duì)本設(shè)計(jì)選擇了合適的無(wú)功功率算法。對(duì)STATCOM進(jìn)行建模分析,在合適的電流控制算法下對(duì)混合系統(tǒng)的整體控制進(jìn)行理論上的分析。為了驗(yàn)證理論的可靠性,借助simulink搭建了仿真系統(tǒng),來(lái)驗(yàn)證設(shè)計(jì)的合理性和可行性。對(duì)于系統(tǒng)的控制核心DSP進(jìn)行研究,圍繞DSP設(shè)計(jì)了配套的采樣電路與調(diào)理電路,給出了程序的設(shè)計(jì)流程,并在配套的軟件下編寫適合本設(shè)計(jì)的程序,借助仿真器來(lái)不斷的調(diào)試和改善程序。應(yīng)用DSP作為混合系統(tǒng)的控制核心,結(jié)合硬件與軟件的設(shè)計(jì),搭建了補(bǔ)償容量為±30kvar的STATCOM和補(bǔ)償容量為30kvar的三組TSC裝置,并進(jìn)行并網(wǎng)實(shí)驗(yàn),在實(shí)驗(yàn)的環(huán)境下,證明本系統(tǒng)可以實(shí)現(xiàn)對(duì)無(wú)功功率的實(shí)時(shí)補(bǔ)償,動(dòng)態(tài)響應(yīng)要求和補(bǔ)償效果都滿足設(shè)計(jì)要求。
[Abstract]:With the development of science and technology, a large number of electrical equipment to bring convenience to people's production and life, followed by the emergence of a large number of reactive power. In the new century, the use of a large number of power electronic devices in the power system, the demand for the quality of power is becoming higher and higher. The existence of reactive power reduces the stability of voltage and the power factor of power network, which seriously affects the daily production activities of people, so the compensation of reactive power is of great significance to improve the quality of power consumption. On the other hand, with the reduction of reactive power, the corresponding consumption of electricity is also decreasing. The reduction of the current of the electric equipment has positive significance both from the economic point of view and from the point of view of green environmental protection) as the compensation method of larger capacity and lower economic cost, the. TSC (thyristor switch capacitor. The main drawback is that it can only absorb inductive reactive power, on the other hand, it can not be compensated finely. The minimum allowance of compensation is affected by capacitance. (. STATCOM (static synchronous compensator) has fast reaction speed and can realize the continuous compensation of reactive power. The capacitive and inductive reactive power can be compensated, but its control is complex and the manufacturing cost of large capacity STATCOM equipment is high. Based on the advantages of two kinds of equipment, the design scheme of hybrid reactive power compensation based on STATCOM TSC is proposed in this paper. Based on the deep analysis of the basic principles of STATCOM and TSC, the suitable selection of the design is carried out. For reactive current detection, Fourier reactive power algorithm, p-q reactive power algorithm and ip-iq reactive power algorithm are compared, their characteristics are analyzed, and appropriate reactive power algorithm is selected for the design. The modeling and analysis of STATCOM are carried out, and the whole control of hybrid system is theoretically analyzed under the appropriate current control algorithm. In order to verify the reliability of the theory, a simulation system is built with simulink to verify the rationality and feasibility of the design. This paper studies the control core of the system DSP, designs the matching sampling circuit and conditioning circuit around DSP, gives the design flow of the program, and writes the program suitable for this design under the matching software. With the help of emulators to constantly debug and improve the program. Using DSP as the control core of hybrid system and combining the design of hardware and software, three groups of TSC devices with compensation capacity of 鹵30kvar and compensation capacity of 30kvar are built. It is proved that the system can realize the real-time reactive power compensation, and the dynamic response and compensation effect can meet the design requirements.
【學(xué)位授予單位】：安徽工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM761.12

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本文編號(hào)：2279899