本文選題：電氣距離 + 靈敏度��； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：當(dāng)前我國經(jīng)濟(jì)快速發(fā)展,電力工業(yè)已經(jīng)進(jìn)入大機(jī)組、大電網(wǎng)、超高電壓的發(fā)展時(shí)期。隨著電網(wǎng)規(guī)模不斷的擴(kuò)大,系統(tǒng)結(jié)構(gòu)更為復(fù)雜,用電、發(fā)電形式多樣化,加之電力系統(tǒng)規(guī)劃、建設(shè)的相對(duì)滯后,不確定性以及運(yùn)行的不安全因素增加,導(dǎo)致電壓穩(wěn)定性的問題日益突出。電力系統(tǒng)無功/電壓控制一直以來被認(rèn)為是提高電力系統(tǒng)功率傳輸能力和電壓穩(wěn)定性的有效方法,其中電壓分級(jí)控制是協(xié)調(diào)電力系統(tǒng)無功/電壓控制的有效手段。電壓分級(jí)控制的前提是無功分區(qū),無功分區(qū)的數(shù)學(xué)基礎(chǔ)是電氣距離計(jì)算,傳統(tǒng)電氣距離的計(jì)算以靈敏度法為基礎(chǔ)。該方法將潮流計(jì)算中雅克比矩陣經(jīng)過求逆變換形成電壓/無功靈敏度矩陣,從中選出代表電氣聯(lián)系的節(jié)點(diǎn)數(shù)據(jù),用數(shù)學(xué)方法將這些節(jié)點(diǎn)進(jìn)行合并劃分,最終形成電網(wǎng)分區(qū)。由于復(fù)變電力系統(tǒng)的靈敏度計(jì)算方法,只滿足可微性,不滿足柯西-黎曼條件。因此,這種靈敏度計(jì)算方法是非解析的,從數(shù)學(xué)角度來說,不能用于描述復(fù)變電力系統(tǒng)的運(yùn)行行為。即便不考慮數(shù)學(xué)嚴(yán)謹(jǐn)性,強(qiáng)行將靈敏度方法應(yīng)用于復(fù)變電力系統(tǒng)的生產(chǎn)實(shí)踐中,該方法也存在如下問題:解耦運(yùn)算形式與電力系統(tǒng)參量耦合的矛盾;增量計(jì)算結(jié)果與電力系統(tǒng)運(yùn)行方向不一致,導(dǎo)致計(jì)算失準(zhǔn)。針對(duì)以上靈敏度法存在的問題,本文提出了一種電氣距離計(jì)算新方法即復(fù)功率增量法。該方法在功率傳輸關(guān)系的基礎(chǔ)上通過對(duì)線路注入與送出功率之間的解析關(guān)系求全微分,得出復(fù)功率增量,經(jīng)數(shù)學(xué)方法證明,復(fù)功率增量計(jì)算方法是解析的,進(jìn)而利用該方法計(jì)算電氣距離。并針對(duì)IEEE39節(jié)點(diǎn)系統(tǒng)進(jìn)行無功分區(qū),對(duì)分區(qū)的結(jié)果進(jìn)行分析評(píng)價(jià)并與靈敏度法計(jì)算結(jié)果相比較,驗(yàn)證所提方法的可行性、合理性與準(zhǔn)確性。
[Abstract]:At present, with the rapid development of economy in China, the electric power industry has entered the development period of large units, large power grids and super high voltage. With the continuous expansion of the scale of the power network, the system structure is more complex, the power consumption, power generation forms are diversified, coupled with the power system planning, the construction of the relative lag, uncertainty and operational insecurity factors increase. The problem of voltage stability is becoming more and more serious. Reactive power / voltage control in power system has been regarded as an effective method to improve power transmission capacity and voltage stability. Voltage hierarchical control is an effective means to coordinate reactive power / voltage control in power system. The premise of voltage grading control is reactive power partition. The mathematical basis of reactive power partition is the calculation of electrical distance. The traditional calculation of electric distance is based on sensitivity method. In this method, the Jacobian matrix is inversely transformed into a voltage / reactive power sensitivity matrix in power flow calculation, from which the node data representing the electrical connection are selected, and these nodes are merged and partitioned by mathematical method. The sensitivity calculation method of complex power system only satisfies the differentiability and does not satisfy the Cauchy Riemann condition. Therefore, the sensitivity calculation method is non-analytical and can not be used to describe the operation behavior of complex power system from the point of view of mathematics. Even though the mathematical rigor is not considered, the sensitivity method is applied to the production practice of complex power system by force. The following problems still exist in this method: the contradiction between decoupling operation form and the coupling of power system parameters; The result of incremental calculation is inconsistent with the direction of power system operation, which leads to the misalignment of calculation. In order to solve the problems of the sensitivity method, a new method for calculating electrical distance, complex power increment method, is proposed. On the basis of the power transmission relation, the method obtains the total differential between the line injection and the output power, and obtains the complex power increment. It is proved by mathematical method that the calculation method of the complex power increment is analytical. Then the electrical distance is calculated by this method. According to the reactive power partition of IEEE39 node system, the results are analyzed and evaluated and compared with the results of sensitivity method to verify the feasibility, rationality and accuracy of the proposed method.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM712

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 梁志峰;葛睿;董昱;陳剛;;印度“7.30”、“7.31”大停電事故分析及對(duì)我國電網(wǎng)調(diào)度運(yùn)行工作的啟示[J];電網(wǎng)技術(shù);2013年07期

2 劉光曄;楊以涵;;電力系統(tǒng)電壓穩(wěn)定與功角穩(wěn)定的統(tǒng)一分析原理[J];中國電機(jī)工程學(xué)報(bào);2013年13期

3 劉光曄;施海亮;楊以涵;;非解析復(fù)變電力系統(tǒng)電壓穩(wěn)定的動(dòng)態(tài)分析方法[J];中國電機(jī)工程學(xué)報(bào);2013年10期

4 張金鋒;公丕鋒;劉建軍;朱孟正;尹新國;;極坐標(biāo)形式下柯西-黎曼條件的推導(dǎo)及其運(yùn)用[J];高師理科學(xué)刊;2013年01期

5 胡揚(yáng)宇;呂天光;褚雙偉;安寧;付紅軍;孫建華;;基于準(zhǔn)穩(wěn)態(tài)仿真的電壓穩(wěn)定軌跡靈敏度分析方法[J];電網(wǎng)技術(shù);2012年06期

6 李國慶;姜濤;徐秋蒙;陳厚合;賈宏杰;;基于局部電壓穩(wěn)定指標(biāo)的裕度靈敏度分析及應(yīng)用[J];電力自動(dòng)化設(shè)備;2012年04期

7 李運(yùn)坤;呂飛鵬;蔣科;陳新;胡亞平;;基于最短電氣距離的運(yùn)行方式組合方法[J];電力系統(tǒng)保護(hù)與控制;2010年15期

8 趙晉泉;劉傅成;鄧勇;李可文;方朝雄;黃文英;;基于映射分區(qū)的無功電壓控制分區(qū)算法[J];電力系統(tǒng)自動(dòng)化;2010年07期

9 王穎;彭建春;何禹清;周春明;張二飛;郭冉;;模糊聚類法在二級(jí)電壓控制分區(qū)中的應(yīng)用[J];繼電器;2008年11期

10 苗峰顯;郭志忠;;靈敏度方法在電力系統(tǒng)分析與控制中的應(yīng)用綜述[J];繼電器;2007年15期

相關(guān)碩士學(xué)位論文 前3條

1 陳玉龍;穩(wěn)態(tài)電網(wǎng)功率輸送關(guān)系的方框圖描述方法[D];華北電力大學(xué);2015年

2 劉宏;一種基于相角描述的電氣距離計(jì)算方法[D];華北電力大學(xué);2012年

3 柏強(qiáng);電壓分級(jí)控制電氣距離法的研究[D];華北電力大學(xué)（北京）;2006年

，

本文編號(hào)：1856015