本文選題：AVC + 電壓�。� 參考：《華北電力大學》2015年碩士論文

【摘要】：電力系統(tǒng)及電力企業(yè)的基本目標是安全、優(yōu)質(zhì)、經(jīng)濟地向用戶提供電能,而電壓是電能質(zhì)量重要指標之一,保證電壓合格對保證電力系統(tǒng)安全可靠運行、用戶安全生產(chǎn)及提高電器設(shè)備使用壽命,具有十分重要的意義。電力系統(tǒng)無功源的合理配置與無功潮流的合理分布對保證電壓質(zhì)量具有決定性的作用,故自動電壓無功控制裝置和軟件已然成為提高變電站電壓質(zhì)量及減輕運維人員負擔非常重要的手段。在現(xiàn)行的自動電壓無功控制裝置及軟件中,被最廣泛使用的是在變電站端安裝當?shù)豓QC軟件或控制裝置,該控制裝置的工作原理絕大部分是利用九區(qū)圖法。此外,近幾年來也出現(xiàn)了一種根據(jù)專家系統(tǒng)基本思想,利用調(diào)控中心調(diào)度自動化系統(tǒng)的四遙功能,對區(qū)域電壓無功進行調(diào)節(jié)并被安裝于調(diào)控中心的集中電壓無功控制系統(tǒng),該控制系統(tǒng)的缺點是對調(diào)控自動化系統(tǒng)的可靠性要求非常嚴格,需要考慮足夠的安全措施。本文主要針對電力系統(tǒng)電壓無功管理與控制存在的相關(guān)問題,基于對電壓無功控制系統(tǒng)(AVC)技術(shù)及控制策略的研究,針對自動電壓控制系統(tǒng)(AVC)在電力系統(tǒng)實際運行中存在的問題和弊端,提出了修改控制策略、改變參數(shù)設(shè)置等相關(guān)方案,并對改進后控制系統(tǒng)運行效果進行跟蹤分析�？墒笰VC系統(tǒng)運行更合理有效,從而達到提高電網(wǎng)運行效益、降低調(diào)控員工作強度、保障電網(wǎng)安全穩(wěn)定運行的實際效果。同時,本文以浙江省杭州市余杭區(qū)電力系統(tǒng)為例,分析了上述AVC控制系統(tǒng)改善措施及方案的實實際運行效果,進一步驗證理論方法的實踐意義。
[Abstract]:The basic goal of power system and power enterprise is to provide electricity to users safely, high-quality and economically, and voltage is one of the important indexes of power quality. It is of great significance for users to work safely and to improve the service life of electrical equipment. The rational allocation of reactive power source and the rational distribution of reactive power flow in power system play a decisive role in ensuring the voltage quality. Therefore, automatic voltage and reactive power control devices and software have become very important means to improve substation voltage quality and reduce the burden of operation and maintenance personnel. In the current automatic voltage and reactive power control device and software, the most widely used is the installation of local VQC software or control device at the substation end. The working principle of the control device is mostly using the nine-zone diagram method. In addition, in recent years, according to the basic idea of expert system, a centralized voltage and reactive power control system based on the four remote functions of the control center dispatching automation system has been developed to regulate the regional voltage and reactive power and be installed in the control center. The disadvantage of the control system is that it is very strict to the reliability of the control automation system, and it needs to consider sufficient safety measures. This paper mainly aims at the problems existing in voltage and reactive power management and control in power system, based on the research of voltage and reactive power control system (VVC) technology and control strategy. In view of the problems and disadvantages of AVC (automatic Voltage Control system) in the actual operation of power system, this paper puts forward some related schemes, such as modifying control strategy and changing parameter setting, and analyzes the operation effect of the improved control system. It can make the operation of AVC system more reasonable and effective, so as to improve the efficiency of power grid operation, reduce the working intensity of the regulator, and ensure the safe and stable operation of the power grid. At the same time, taking the electric power system of Yuhang District, Hangzhou City, Zhejiang Province as an example, this paper analyzes the actual operation effect of the above AVC control system improvement measures and schemes, and further verifies the practical significance of the theoretical method.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM761.12

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