【正文】 的壽命周期費用將由操作和維修所需的努力 推 動。那么損耗將變得越來越重要。 SVC 將 會與開關電容器和可控電抗器在同一時間頻繁操作，而STATCOM轉換器損失將 隨 輸出電流迅速增加。 。 12 結論 我們已經(jīng)研究了 SVC 和 STATCOM 在電力系統(tǒng)的性能。 評估損失在全輸出將大大有助于此，但 這些重量少的差異將更小。 維護主要是需要輔助系統(tǒng)如轉換器冷卻和建筑 系統(tǒng)。 發(fā)展 更高大功率晶閘管和電容器的功率密度有助于 SVC 裝置 在物理上做出貢獻是較小的?？傊?，不是所有的 STATCOM出來的縮減和 SVC相比。 9 安裝 越來越頻繁地用于 準 STATCOM 或 SVC 的封裝被限制。 該過濾器的評級是在的 TCR大小的 2550％ 的范圍內(nèi)。 8 諧波 SVC和 STATCOM兩個產(chǎn)生諧波。額外的 TSC的評級通常被設定在 50? 100％ 的 SVC等級的范圍內(nèi)。 標準的 TCR 具有一定的短時 過載 電流能力。 對于穩(wěn)態(tài)電壓支持，即要遵循日常負載模式，散裝無功功率加上無級平滑的電壓控制是需要的。基于諧波和損失的考慮，脈沖寬度調(diào)制（ PWM）或多個轉換器的使用。該 TCR通常比 TSC塊較大，使得連續(xù)的控制得以實現(xiàn)。 關鍵詞：動態(tài)補償器， SVC， STATCOM，短路容量，增益靈敏度， 短期電壓穩(wěn)定 ，諧波 1 引言 并聯(lián)連接的靜止無功補償器（ SVC時）被廣泛用于控制交流 電壓的傳輸網(wǎng)絡。中文 3480字 畢業(yè)設計外文翻譯 院 別 電氣與信息工程學院 專 業(yè) 電 氣工程與自動化 班 級 電 氣 101班 學 號 姓 名 指導教師 2020 年 12 月 28日 1 Benefits of SVC and STATCOM for Electric Utility Application Abstract Examination of the behavior of SVCs and STATCOMs in electric power systems is presented. The paper is based on analytical and simulation analysis, and conclusions can be used as power industry guidelines. We explain the principle structures of SVCs and STATCOMs, the models for dynamic studies, and the impact of these devices on steady state voltage and transient voltage stability. Sensitivity analysis is provided which shows the impact of SVCs and STATCOMs with regard to work strength. Harmonic issues, space requirements, and price discussions are also briefly addressed. Index Terms —Dynamic Compensators, SVC, STATCOM, Short Circuit Capacity, Gain Sensitivity, Short Term Voltage Stability, Harmonics I. INTRODUCTION SHUNTconnected static var pensators (SVCs) are used extensively to control the AC voltage in transmission works. Power electronic equipment, such as the thyristor controlled reactor (TCR) and the thyristor switched capacitor (TSC) have gained a significant market, primarily because of wellproven robustness to supply dynamic reactive power with fast response time and with low maintenance. With the advent of high power gate turnoff thyristors and transistor devices (GTO, IGBT, …) a new generation of power electronic equipment, STATCOM, shows great promise for application in power systems [3,4]. This paper aims to explain the benefits of SVCs and STATCOMs for application in utility power systems. Installation of a large number of SVCs and experience gained from recent STATCOM projects throughout the world motivates us to clarify certain aspects of these devices. II. BASIC DESCRIPTION This section explains briefly the basic configuration of SVCs and STATCOMs: A. SVC The pensator normally includes a thyristorcontrolled reactor (TCR), thyristorswitched capacitors (TSCs) and harmonic filters. It might also include mechanically switched shunt capacitors (MSCs), and then the term static var system is used. The harmonic filters (for the 2 TCRproduced harmonics) are capacitive at fundamental frequency. The TCR is typically larger than the TSC blocks so that continuous control is realized. Other possibilities are fixed capacitors (FCs), and thyristor switched reactors (TSRs). Usually a dedicated transformer is used, with the pensator equipment at medium voltage. The transmission side voltage is controlled, and the Mvar ratings are referred to the transmission side. The rating of an SVC can be optimized to meet the required demand. The rating can be symmetric or asymmetric with respect to inductive and capacitive reactive power. As a