【摘要】：本課題以廣西區(qū)內(nèi)豐富的小型水電資源為研究背景,闡述了小微水電對(duì)國(guó)家能源戰(zhàn)略結(jié)構(gòu)的重要意義。實(shí)際調(diào)研了廣西區(qū)內(nèi)已建的小微水電的運(yùn)營(yíng)情況以及設(shè)備工況,了解了部分在建或規(guī)劃中小微水電的投資情況,深入分析了目前小微水電的特點(diǎn)和存在的問題,并針對(duì)此,設(shè)計(jì)和開發(fā)了種以勵(lì)磁控制為主,其他功能為輔的小微水電機(jī)組綜合控制裝置。 課題以300kW及以下小微水電小型發(fā)電機(jī)組為研究對(duì)象,針對(duì)小微水電機(jī)組的運(yùn)行特點(diǎn),闡述了小微水電機(jī)組綜合控制裝置設(shè)計(jì)指標(biāo),以及實(shí)現(xiàn)各項(xiàng)功能的理論依據(jù)。所設(shè)計(jì)的綜合控制裝置,在勵(lì)磁控制功能的基礎(chǔ)上,集成了同期控制、保護(hù)以及其他功能,實(shí)現(xiàn)了采集信號(hào)的共享,避免了分立裝置重復(fù)采集所造成的資源浪費(fèi),簡(jiǎn)化了系統(tǒng)的線路,為小微水電站的自動(dòng)化改造提供一種方案,具有很高的性價(jià)比。課題中,獨(dú)創(chuàng)的單微機(jī)雙通道勵(lì)磁設(shè)計(jì)是本裝置的一大亮點(diǎn)。即在數(shù)字勵(lì)通道磁控制的基礎(chǔ)上,附加模擬通道勵(lì)磁控制,實(shí)現(xiàn)了單微機(jī)雙通道的勵(lì)磁控制,增強(qiáng)了系統(tǒng)勵(lì)磁的可靠性。 本課題根據(jù)小微水電的實(shí)際需求,嚴(yán)格遵守設(shè)計(jì)規(guī)范和要求,對(duì)裝置軟、硬件進(jìn)行精細(xì)化、模塊化設(shè)計(jì)。硬件部分模塊主要包括：模擬量插件、I/O插件、模擬通道插件、電源插件、CPU插件、脈沖插件等幾部分。該裝置以DSP+CPLD作為控制核心,實(shí)現(xiàn)AD采樣、I/O控制、脈沖控制、并網(wǎng)、保護(hù)等功能。在勵(lì)磁控制中,數(shù)字、模擬通道無擾切換的實(shí)現(xiàn)也是本課題的個(gè)重要內(nèi)容。 最后,通過小功率實(shí)驗(yàn)機(jī)組對(duì)裝置進(jìn)行試驗(yàn)與調(diào)試,對(duì)試驗(yàn)波形和數(shù)據(jù)進(jìn)行了分析,所得的結(jié)論表明,裝置的各項(xiàng)性能均滿足國(guó)家相關(guān)標(biāo)準(zhǔn)和要求。
[Abstract]:Taking the rich small hydropower resources in Guangxi as the research background, this paper expounds the significance of small and micro hydropower to the national energy strategic structure. This paper investigates the operation and equipment working conditions of the built small micro hydropower in Guangxi, understands the investment situation of some small hydropower in construction or planning, analyzes the characteristics and existing problems of the small micro hydropower in Guangxi, and aims at this problem. This paper designs and develops a kind of integrated control device of small micro hydropower unit, which is based on excitation control and auxiliary with other functions. According to the operation characteristics of the small and micro hydropower units, the design index of the integrated control device for the small and micro hydropower units and the theoretical basis for the realization of the various functions are expounded in this paper, taking the 300kW and the following small and micro hydropower generating units as the research objects. On the basis of excitation control function, the designed integrated control device integrates synchronous control, protection and other functions, realizes the sharing of acquisition signals, and avoids the waste of resources caused by repeated acquisition of discrete devices. It simplifies the system circuit and provides a scheme for automatic transformation of small hydropower stations with high performance and price ratio. In the subject, the original design of single microcomputer and double channel excitation is a bright spot of this device. On the basis of digital excitation channel magnetic control and additional analog channel excitation control, the excitation control of single microcomputer and double channel is realized, and the reliability of excitation system is enhanced. According to the actual demand of small and micro hydropower, this paper strictly obeys the design specification and requirements, and designs the hardware and software of the device in detail and modularized. The hardware module mainly includes: analog I / O plug-in, analog channel plug-in, power plug-in CPU plug-in, pulse plug-in and so on. Using DSP CPLD as the control core, the device realizes the functions of AD sampling I / O control, pulse control, grid-connected, protection and so on. In excitation control, the realization of digital and analog channel undisturbed switching is also an important part of this subject. Finally, the equipment is tested and debugged by a small power experimental unit, and the waveform and data of the test are analyzed. The results show that the performance of the device meets the relevant national standards and requirements.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV734.4

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本文編號(hào)：2146780