本文選題：電壓調(diào)控 + 關(guān)口無(wú)功　； 參考：《華南理工大學(xué)》2014年碩士論文

【摘要】：隨著電力系統(tǒng)互聯(lián)的深入發(fā)展，大容量超高壓直流輸電的應(yīng)用，分布式電源的并網(wǎng)，負(fù)荷快速而不均勻的發(fā)展以及負(fù)荷峰谷差的不斷拉大，顯著增大了廣東電網(wǎng)無(wú)功電壓耦合的復(fù)雜性，給大受端省級(jí)電網(wǎng)的無(wú)功電壓調(diào)控帶來(lái)了巨大的挑戰(zhàn)和難度。本文在總結(jié)和分析主網(wǎng)和配電網(wǎng)無(wú)功電壓調(diào)控典型問(wèn)題的基礎(chǔ)上，介紹了常用的幾種無(wú)功電壓調(diào)控手段，通過(guò)綜述國(guó)內(nèi)外無(wú)功電壓調(diào)控在控制模式以及考核機(jī)制的研究現(xiàn)狀，回顧配電網(wǎng)無(wú)功規(guī)劃的研究概況及應(yīng)用領(lǐng)域，歸納了無(wú)功電壓調(diào)控的研究方法與解決思路。 從廣東電網(wǎng)無(wú)功電壓考核指標(biāo)欠協(xié)調(diào)、無(wú)功調(diào)控物質(zhì)基礎(chǔ)不足、VQC裝置投入率較低、AVC系統(tǒng)運(yùn)行經(jīng)驗(yàn)欠缺、負(fù)荷特性的顯著變化、網(wǎng)架結(jié)構(gòu)出現(xiàn)的新特點(diǎn)以及小水電并網(wǎng)的影響等方面，探討了廣東電網(wǎng)無(wú)功電壓調(diào)控問(wèn)題形成的原因，在此基礎(chǔ)上初步分析了廣東電網(wǎng)無(wú)功電壓調(diào)控問(wèn)題的解決對(duì)策。 主網(wǎng)方面，針對(duì)現(xiàn)有關(guān)口功率越來(lái)越不能適應(yīng)電網(wǎng)的快速發(fā)展以及負(fù)荷快速增長(zhǎng)的需求，提出了基于AVC系統(tǒng)的省地電網(wǎng)關(guān)口無(wú)功協(xié)調(diào)控制方法。首先引入平均協(xié)調(diào)功率因數(shù)限值(average coordination power factor limits，ACPF)指標(biāo)定量評(píng)價(jià)省級(jí)電網(wǎng)的無(wú)功承受極限，接著基于電網(wǎng)分層解耦的理念，考慮省級(jí)電網(wǎng)無(wú)功安全裕度，片區(qū)負(fù)荷特性差異以及無(wú)功調(diào)控能力，提出了省地電網(wǎng)關(guān)口協(xié)調(diào)功率因數(shù)的整定方法，廣東某區(qū)域電網(wǎng)仿真結(jié)果表明，所提方法有效解決了依賴專家經(jīng)驗(yàn)以及全局優(yōu)化計(jì)算獲得AVC系統(tǒng)參數(shù)設(shè)定值所存在的局限性。 配電網(wǎng)方面，考慮含小水電配電線路電壓高企問(wèn)題的解決措施存在工程實(shí)用性差等問(wèn)題，提出了集中吸納感性無(wú)功補(bǔ)償方法，通過(guò)監(jiān)測(cè)含小水電主干線的節(jié)點(diǎn)電壓分布，并基于電壓降落無(wú)功解耦算式，確定并聯(lián)電抗器的優(yōu)化補(bǔ)償點(diǎn)，指導(dǎo)感性無(wú)功補(bǔ)償?shù)耐肚�。仿真結(jié)果表明，，所提方法抑制含小水電配電線路電壓抬升效果明顯，兼具防盜和易于管理等特點(diǎn)，可操作性強(qiáng)，工程實(shí)用價(jià)值高。 本論文的主要工作是在國(guó)家自然科學(xué)基金項(xiàng)目(51377060)和華南理工大學(xué)中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(2013ZM0013)的資助下完成的。
[Abstract]:With the further development of power system interconnection, the application of large capacity UHV direct current transmission, the grid connection of distributed power source, the rapid and uneven development of load and the increasing of load peak and valley difference, The complexity of reactive power and voltage coupling in Guangdong power grid is greatly increased, which brings great challenges and difficulties to the regulation of reactive power and voltage in large receiving provincial power grid. On the basis of summing up and analyzing the typical problems of reactive power and voltage regulation in main network and distribution network, this paper introduces several commonly used reactive power and voltage regulation methods, and summarizes the research status of reactive power and voltage regulation in control mode and examination mechanism at home and abroad. The research situation and application field of reactive power planning in distribution network are reviewed, and the research methods and solutions of reactive power and voltage regulation are summarized. Based on the lack of coordination of reactive power and voltage assessment index in Guangdong power grid, the deficiency of material basis of reactive power regulation and the lack of experience in the operation of AVC system with lower input rate of VQC unit, the significant change of load characteristics is also presented. On the basis of the new characteristics of grid structure and the influence of small hydropower connected to power grid, the causes of reactive power and voltage regulation in Guangdong power network are discussed, and the countermeasures to solve the problem of reactive power and voltage regulation in Guangdong power network are analyzed preliminarily. In view of the fact that the existing gate power can not meet the needs of the rapid development of the power grid and the rapid growth of the load, a coordinated control method of reactive power at the gate of the provincial and ground power network based on AVC system is proposed. First, the average coordinated power factor limit average coordination power factor limits are introduced to quantitatively evaluate the reactive power tolerance limit of the provincial power grid, and then based on the concept of hierarchical decoupling, the reactive power safety margin of the provincial power grid is considered. Based on the difference of load characteristics and reactive power regulation ability, a method for setting power factor at the provincial and ground power grid level is proposed. The simulation results of a regional power network in Guangdong Province show that, The proposed method effectively solves the limitation of using expert experience and global optimization to obtain AVC system parameters. In distribution network, considering the problem of high voltage of distribution line with small hydropower, some problems such as poor engineering practicability, the method of concentrating inductive reactive power compensation is put forward to monitor the node voltage distribution of main line with small hydropower. Based on the decoupling formula of voltage drop reactive power, the optimal compensation point of parallel reactor is determined to guide the switching of inductive reactive power compensation. The simulation results show that the proposed method is effective in restraining voltage uplift of distribution lines with small hydropower stations, has the characteristics of anti-theft and easy to manage, and has strong maneuverability and high practical value in engineering. The main work of this paper is supported by the National Natural Science Foundation of China (51377060) and the Special Fund for basic Scientific Research operating expenses of the Central University of South China University of Technology (2013ZM0013).
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM761

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 袁康龍;劉明波;;計(jì)及無(wú)功耦合的多分區(qū)關(guān)聯(lián)協(xié)調(diào)二級(jí)電壓控制方法[J];中國(guó)電機(jī)工程學(xué)報(bào);2013年28期

本文編號(hào)：1948955