【摘要】：我國水電資源在全世界居于首位,隨著傳統(tǒng)能源的枯竭和環(huán)保意識的增強(qiáng),以小水電為代表的分布式能源必將迎來更大的發(fā)展。在小水電、風(fēng)電等清潔能源逐漸規(guī)�；拇蟊尘跋�,作為其接納主體,配電網(wǎng)的安全和經(jīng)濟(jì)運(yùn)行越來越受到人們的關(guān)注。主動(dòng)配電網(wǎng)通過對可控資源的有效管理實(shí)現(xiàn)配電網(wǎng)內(nèi)分布式電源和原有設(shè)施的高效兼容和利用,能夠綜合考慮各方面因素并進(jìn)行全局優(yōu)化,在電網(wǎng)安全性的基礎(chǔ)上實(shí)現(xiàn)最優(yōu)經(jīng)濟(jì)運(yùn)行,旨在應(yīng)對分布式電源的規(guī)模化發(fā)展,增強(qiáng)配電網(wǎng)的可控性,對于分布式電源的發(fā)展將起到至關(guān)重要的作用。 本文著重對小水電集中地區(qū)主動(dòng)配電網(wǎng)的能量管理進(jìn)行研究。采用靈敏度分析定性研究節(jié)點(diǎn)注入有功和無功變化對電壓的影響程度,提出綜合分布式電源有功、無功以及有載調(diào)壓變壓器的調(diào)壓策略。計(jì)及運(yùn)行成本、折舊成本、損耗成本和環(huán)境成本等因素,基于小水電季節(jié)特性和分時(shí)電價(jià),提出主動(dòng)配電網(wǎng)的經(jīng)濟(jì)調(diào)度方案。考慮調(diào)壓策略和經(jīng)濟(jì)調(diào)度方案,運(yùn)用隸屬度評價(jià)和AHP層次分析法構(gòu)建綜合優(yōu)化目標(biāo),并通過引入動(dòng)態(tài)分析的差分進(jìn)化算法進(jìn)行最優(yōu)潮流運(yùn)算,實(shí)現(xiàn)主動(dòng)配電網(wǎng)全過程的能量優(yōu)化。算例仿真證明：通過主動(dòng)配電網(wǎng)綜合調(diào)壓可在保證電壓質(zhì)量的前提下大幅度提高分布式電源的滲透水平,主動(dòng)配電網(wǎng)能量管理能使小水電集中地區(qū)主動(dòng)配電網(wǎng)在保證電壓質(zhì)量和提高環(huán)境保護(hù)效益的同時(shí)大幅降低成本。 主動(dòng)配電網(wǎng)能量管理實(shí)現(xiàn)了小水電集中配電網(wǎng)的智能控制和優(yōu)化,能夠很好的支撐分布式電源高滲透時(shí)的配電網(wǎng)運(yùn)行。研究具有重要的理論和實(shí)踐價(jià)值。
[Abstract]:With the depletion of traditional energy and the enhancement of environmental protection consciousness, the distributed energy, represented by small hydropower, will surely usher in greater development. Under the background of small hydropower, wind power and other clean energy gradually becoming large-scale, as the main body of its admission, the safety and economic operation of distribution network has been paid more and more attention. Through the effective management of controllable resources, the active distribution network can realize the efficient compatibility and utilization of the distributed generation and the original facilities in the distribution network, and can comprehensively consider all factors and carry out the overall optimization. Based on the security of the power network, the optimal economic operation is realized, which aims to cope with the large-scale development of distributed power generation and enhance the controllability of the distribution network, which will play an important role in the development of distributed generation. This paper focuses on the energy management of the active distribution network in the concentrated area of small hydropower. Sensitivity analysis is used to qualitatively study the influence of nodal active and reactive power changes on voltage, and a voltage regulation strategy for integrated distributed power supply, reactive power and on-load voltage regulating transformer is proposed. Considering the operation cost, depreciation cost, loss cost and environmental cost, based on the seasonal characteristics of small hydropower and time-sharing price, the economic dispatching scheme of active distribution network is put forward. Considering the voltage regulation strategy and economic scheduling scheme, the membership evaluation and AHP hierarchy process are used to construct the comprehensive optimization objectives, and the optimal power flow operation is carried out by introducing the dynamic analysis differential evolution algorithm. The whole process of energy optimization of active distribution network is realized. The simulation results show that comprehensive voltage regulation in active distribution network can greatly improve the permeation level of distributed generation on the premise of guaranteeing voltage quality. Active distribution network energy management can greatly reduce the cost while ensuring voltage quality and improving environmental protection efficiency in small hydropower concentrated areas. Active distribution network energy management realizes intelligent control and optimization of small hydropower centralized distribution network, and can support distribution network operation with high permeability of distributed generation. The research has important theoretical and practical value.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM73;TV742

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