本文選題：特高壓 + 交直流混聯(lián)　； 參考：《湖南大學(xué)》2014年碩士論文

【摘要】：十二五規(guī)劃后期，南方電網(wǎng)計(jì)劃建設(shè)糯扎渡電站送電廣東±800kV特高壓直流工程，洛溪渡電站送電廣東同塔雙回±500kV直流工程和金沙江中游梨園、阿海電站送電廣西直流工程。2015年西電東送主網(wǎng)架在2010年五直八交的基礎(chǔ)上形成九直八交送電通道，特高壓結(jié)構(gòu)性穩(wěn)定問題十分突出，對廣東電網(wǎng)安全穩(wěn)定產(chǎn)生重要影響。為提高廣東電網(wǎng)的靜態(tài)穩(wěn)定性和暫態(tài)穩(wěn)定性，，使電力系統(tǒng)滿足穩(wěn)定導(dǎo)則，對廣東特高壓電網(wǎng)進(jìn)行分析、研究安全穩(wěn)控措施是非常必要的。 本文以廣東電網(wǎng)2015年數(shù)據(jù)為研究基礎(chǔ)，依據(jù)電力系統(tǒng)安全穩(wěn)定導(dǎo)則，利用BPA軟件對廣東電網(wǎng)進(jìn)行潮流計(jì)算。對廣東電網(wǎng)各種典型故障仿真和廣東電網(wǎng)重要地區(qū)安全穩(wěn)定現(xiàn)狀進(jìn)行分析。找出各重要地區(qū)所存在的安全穩(wěn)定問題，并給出解決措施。為廣東電網(wǎng)的安全穩(wěn)定控制措施的完善奠定基礎(chǔ)、提供依據(jù)。 電氣距離作為描述電網(wǎng)節(jié)點(diǎn)間的電氣耦合程度的參數(shù)，得到廣泛應(yīng)用。本文對電氣距離的概念、電氣距離的特性（非負(fù)性、對稱性、可加性、物理量綱、物理意義）進(jìn)行了詳盡的闡述。并運(yùn)用電氣距離靈敏度法，基于無功功率靈敏度和有功功率靈敏度對IEEE-30節(jié)點(diǎn)網(wǎng)絡(luò)進(jìn)行分區(qū)，驗(yàn)證了電氣距離靈敏度法的可行性。 本文提出以電氣距離靈敏度法對大電網(wǎng)分區(qū)后確定安全穩(wěn)定控制措施。在切機(jī)切負(fù)荷措施中，需確定切機(jī)切負(fù)荷地點(diǎn)及切機(jī)切負(fù)荷量。本文基于電氣距離靈敏度法對廣東電網(wǎng)進(jìn)行分區(qū)。選取特高壓電網(wǎng)的典型故障、典型線路仿真分析，在對廣東電網(wǎng)分區(qū)后確定安全穩(wěn)定控制措施，能快速、準(zhǔn)確地確定切機(jī)切負(fù)荷地點(diǎn)。最后對切機(jī)切負(fù)荷的規(guī)律，切機(jī)量的影響因素進(jìn)行了研究。 論文主要圍繞廣東電網(wǎng)安全穩(wěn)定分析與控制為研究中心，為廣東電網(wǎng)安全穩(wěn)控措施的制定和電網(wǎng)安全、穩(wěn)定運(yùn)行提供了研究基礎(chǔ)及技術(shù)支持。
[Abstract]:In the late 12th Five-Year Plan, the Southern Power Grid plans to build the Guangdong 鹵800kV UHV DC Project for the Nuozhadu Power Station, the Guangdong double Towers 鹵500kV DC Project for the Luoxidu Power Station, and the Liyuan Project for the middle reaches of the Jinsha River.Guangxi DC project of Ahai power station. In 2015, the main power transmission grid from west to east formed nine transmission channels on the basis of May and eight in 2010. The structural stability of UHV is very prominent, which has an important impact on the safety and stability of Guangdong power grid.In order to improve the static and transient stability of Guangdong power network and make the power system meet the stability guidelines, it is necessary to study the safety stability control measures for the Guangdong UHV power network.Based on the data of Guangdong Power Grid in 2015, this paper uses BPA software to calculate the power flow of Guangdong power grid according to the power system safety and stability guidelines.The simulation of various typical faults in Guangdong power grid and the present situation of safety and stability in important areas of Guangdong power grid are analyzed.To find out the security and stability problems in the important areas, and give the solution.It lays a foundation for the improvement of safety and stability control measures of Guangdong power grid and provides the basis.Electrical distance is widely used as a parameter to describe the degree of electrical coupling between nodes.In this paper, the concept of electrical distance and the characteristics of electrical distance (non-negative, symmetry, additivity, physical dimension, physical meaning) are described in detail.The electrical distance sensitivity method is used to partition the IEEE-30 node network based on reactive power sensitivity and active power sensitivity, which verifies the feasibility of the electrical distance sensitivity method.In this paper, the method of electric distance sensitivity is used to determine the safety and stability control measures for large power grid.In the cutting load measures, it is necessary to determine the cutting load location and the cutting load.Based on the method of electric distance sensitivity, this paper divides Guangdong power grid.The typical fault of UHV power network and the simulation analysis of typical transmission lines are selected to determine the safety and stability control measures after dividing the Guangdong power network, which can quickly and accurately determine the cutting load location.Finally, the law of cutting load and the influencing factors of cutting load are studied.This paper focuses on the safety and stability analysis and control of Guangdong power grid as the research center, which provides the research foundation and technical support for the establishment of security and stability control measures and the safe and stable operation of Guangdong power grid.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM712

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