超導(dǎo)磁儲(chǔ)能在微電網(wǎng)中的應(yīng)用研究
發(fā)布時(shí)間：2018-11-05 17:25
【摘要】：隨著超導(dǎo)電力技術(shù)的發(fā)展,越來越多的超導(dǎo)電力設(shè)備誕生,超導(dǎo)磁儲(chǔ)能(SMES)系統(tǒng)可以長(zhǎng)期、高效、無損地儲(chǔ)存電能,通過解耦控制能在四象限運(yùn)行,能夠?qū)崿F(xiàn)對(duì)電網(wǎng)有功功率以及無功功率進(jìn)行實(shí)時(shí)快速獨(dú)立地調(diào)節(jié)。一個(gè)完整的SMES系統(tǒng)包括五個(gè)部分即制冷系統(tǒng)、超導(dǎo)磁體、磁體失超保護(hù)、電流變換器、檢測(cè)控制系統(tǒng),根據(jù)電流變換器的主電路拓?fù)浣Y(jié)構(gòu)及控制方法的不同,將其分為電流源型SMES和電壓源型SMES,對(duì)于電流源型SMES可通控制SMES與電網(wǎng)之間的電流大小和相位來調(diào)節(jié)兩者之間無功功率和有功功率的交換,對(duì)于電壓源型SMES則通過控制電流變換器交流側(cè)出口電壓基波幅值與相位來控制有功功率和無功功率輸出。這兩種類型SMES的電流變換器對(duì)交流側(cè)電流或電壓幅值和相位的控制都是基于相應(yīng)的脈沖寬度調(diào)制(PWM)策略來完成的。 本文依托云南電網(wǎng)科技項(xiàng)目“微網(wǎng)高溫超導(dǎo)磁儲(chǔ)能系統(tǒng)在云電科技園示范工程中的應(yīng)用研究”以電流源型SMES為研究對(duì)象,對(duì)基于微電網(wǎng)運(yùn)的SMES系統(tǒng)展開研究。建立了包含SMES系統(tǒng)的微電網(wǎng)PSCAD模型,分別就SMES提供短時(shí)供電、故障時(shí)刻緩沖、提高微網(wǎng)電能質(zhì)量、微電網(wǎng)與主電網(wǎng)的平滑投切、優(yōu)化DG的運(yùn)行提高微網(wǎng)運(yùn)行經(jīng)濟(jì)性方面進(jìn)行仿真驗(yàn)證。仿真結(jié)果表明,SMES在微電網(wǎng)中可以對(duì)電壓暫降起到支撐作用并且在微網(wǎng)并網(wǎng)運(yùn)行時(shí)采用PQ控制,孤島狀態(tài)下轉(zhuǎn)為VF控制保證微網(wǎng)在不同運(yùn)行狀態(tài)下的穩(wěn)定性。此外,SMES在完成對(duì)分布式能源調(diào)配的同時(shí)大大提高了微電網(wǎng)的經(jīng)濟(jì)性,與其他微網(wǎng)儲(chǔ)能設(shè)比較具有相當(dāng)?shù)膬?yōu)勢(shì),為SMES在微電網(wǎng)中實(shí)際運(yùn)用提供參考。
[Abstract]:With the development of superconducting power technology, more and more superconducting power equipments are born. Superconducting magnetic energy storage (SMES) system can store electric energy for a long time, efficiently and without loss, and can operate in four quadrants by decoupling control. It can adjust the active power and reactive power in real time and independently. A complete SMES system consists of five parts, namely, refrigeration system, superconducting magnet, magnet loss protection, current converter, detection control system, according to the different topology and control methods of the main circuit of the current converter. It can be divided into current source SMES and voltage source SMES, to control the current size and phase between SMES and power network to adjust the exchange of reactive power and active power. For the voltage source type SMES, the active and reactive power output is controlled by controlling the amplitude and phase of the fundamental voltage at the AC side of the current converter. The amplitude and phase of AC side current or voltage are controlled by these two types of SMES current converters based on the corresponding pulse width modulation (PWM) strategy. In this paper, based on Yunnan power grid science and technology project, "the application of microgrid HTS magnetic energy storage system in the demonstration project of cloud electric science park", the SMES system based on microgrid transportation is studied with current source type SMES as the research object. The PSCAD model of microgrid including SMES system is established to provide short time power supply, fault time buffer, improve the power quality of microgrid, and smooth switching between microgrid and main grid. To optimize the operation of DG and improve the operation economy of microgrid are verified by simulation. The simulation results show that SMES can support the voltage sag in the microgrid and use PQ control when the microgrid is connected to the grid. In the isolated island state, the VF control can guarantee the stability of the microgrid under different operation conditions. In addition, SMES greatly improves the economy of microgrid when it completes the distributed energy allocation, which has a considerable advantage compared with other micro-grid energy storage, and provides a reference for the practical application of SMES in microgrid.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM727
本文編號(hào)：2312774
[Abstract]:With the development of superconducting power technology, more and more superconducting power equipments are born. Superconducting magnetic energy storage (SMES) system can store electric energy for a long time, efficiently and without loss, and can operate in four quadrants by decoupling control. It can adjust the active power and reactive power in real time and independently. A complete SMES system consists of five parts, namely, refrigeration system, superconducting magnet, magnet loss protection, current converter, detection control system, according to the different topology and control methods of the main circuit of the current converter. It can be divided into current source SMES and voltage source SMES, to control the current size and phase between SMES and power network to adjust the exchange of reactive power and active power. For the voltage source type SMES, the active and reactive power output is controlled by controlling the amplitude and phase of the fundamental voltage at the AC side of the current converter. The amplitude and phase of AC side current or voltage are controlled by these two types of SMES current converters based on the corresponding pulse width modulation (PWM) strategy. In this paper, based on Yunnan power grid science and technology project, "the application of microgrid HTS magnetic energy storage system in the demonstration project of cloud electric science park", the SMES system based on microgrid transportation is studied with current source type SMES as the research object. The PSCAD model of microgrid including SMES system is established to provide short time power supply, fault time buffer, improve the power quality of microgrid, and smooth switching between microgrid and main grid. To optimize the operation of DG and improve the operation economy of microgrid are verified by simulation. The simulation results show that SMES can support the voltage sag in the microgrid and use PQ control when the microgrid is connected to the grid. In the isolated island state, the VF control can guarantee the stability of the microgrid under different operation conditions. In addition, SMES greatly improves the economy of microgrid when it completes the distributed energy allocation, which has a considerable advantage compared with other micro-grid energy storage, and provides a reference for the practical application of SMES in microgrid.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM727
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，本文編號(hào)：2312774
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