本文選題：低頻振蕩 + 阻尼控制�。� 參考：《華北電力大學(xué)》2017年碩士論文

【摘要】：隨著電力工業(yè)與信息工業(yè)的深度融合與“互聯(lián)網(wǎng)+”概念的提出,開(kāi)發(fā)網(wǎng)絡(luò)化、數(shù)字化、智能化等技術(shù),利用廣域測(cè)量系統(tǒng)反饋信號(hào)中的廣域信息實(shí)現(xiàn)對(duì)電力系統(tǒng)的控制,能有效抑制低頻振蕩,提高互聯(lián)電網(wǎng)系統(tǒng)的動(dòng)態(tài)性能,已成為未來(lái)電網(wǎng)的發(fā)展趨勢(shì)。然而,廣域信號(hào)采集傳輸過(guò)程中存在不可忽略的多路傳輸延遲,且具有時(shí)變性的本質(zhì),深入考慮電力系統(tǒng)控制中的時(shí)滯環(huán)節(jié)對(duì)優(yōu)化控制器性能與提高電力系統(tǒng)的安全穩(wěn)定運(yùn)行具有促進(jìn)作用。本文首先建立考慮多路信號(hào)傳輸時(shí)滯的電力系統(tǒng)模型,利用Pade近似時(shí)滯推導(dǎo)出計(jì)及多路信號(hào)時(shí)滯以及多個(gè)控制器時(shí)的閉環(huán)電力系統(tǒng)狀態(tài)空間方程。在此基礎(chǔ)上,通過(guò)特征值分析和時(shí)域仿真對(duì)比分析多路信號(hào)時(shí)滯以及時(shí)變時(shí)滯對(duì)電力系統(tǒng)穩(wěn)定性的影響。其次,針對(duì)考慮多路信號(hào)延遲的電力系統(tǒng)阻尼控制的研究不足以及魯棒控制方法無(wú)法直接求取控制參數(shù)的缺陷,提出一種可直接求解控制參數(shù)的多時(shí)滯廣域電力系統(tǒng)阻尼控制器的設(shè)計(jì)方法,利用Lyapunov-Krasovskii泛函理論推導(dǎo)出的多時(shí)滯系統(tǒng)鎮(zhèn)定判據(jù),將控制鎮(zhèn)定問(wèn)題轉(zhuǎn)化為線性矩陣不等式的可行性問(wèn)題,直接求解控制參數(shù),避免了傳統(tǒng)方法中利用智能算法迭代求解參數(shù)的不便。最后,利用網(wǎng)絡(luò)化控制系統(tǒng)的思想,對(duì)電力系統(tǒng)的時(shí)變時(shí)滯和丟包采用實(shí)時(shí)估測(cè)和統(tǒng)一化處理,并設(shè)計(jì)一種利用自適應(yīng)史密斯預(yù)估器以克服廣域傳輸信號(hào)時(shí)變和丟包的影響。本文所提的兩種控制方案均結(jié)合相關(guān)案例進(jìn)行仿真驗(yàn)證。本文研究?jī)?nèi)容有利于理解多路傳輸延遲以及時(shí)變傳輸延遲對(duì)電力系統(tǒng)的影響,并在計(jì)及多時(shí)滯以及時(shí)變時(shí)滯的電力系統(tǒng)阻尼控制器設(shè)計(jì)領(lǐng)域做出有益嘗試,具有一定的理論意義和實(shí)用價(jià)值。
[Abstract]:With the deep integration of power industry and information industry and the concept of "Internet", the development of networking, digitization, intelligence and other technologies, using the wide area information in the feedback signal of the wide area measurement system to realize the control of the power system. It has become the development trend of power grid in the future to restrain the low frequency oscillation effectively and improve the dynamic performance of interconnected power system. However, in the process of wide-area signal acquisition and transmission, there is a delay in multichannel transmission, which is time-varying in nature. Considering the time delay in power system control, it is helpful to optimize the performance of controller and improve the safe and stable operation of power system. In this paper, a power system model with multiple signal transmission delays is established, and the state space equation of the closed loop power system is derived by using the Pade approximate delay. On this basis, the effects of multi-channel delay and time-varying delay on the stability of power system are analyzed by eigenvalue analysis and time-domain simulation. Secondly, aiming at the lack of research on damping control of power system considering multi-channel signal delay, and the defect that robust control method can not directly obtain control parameters, In this paper, a design method of damping controller for wide area power system with multiple delays is presented, which can directly solve the control parameters. The stabilization criterion for multi time delay systems is derived by using Lyapunov-Krasovskii functional theory. The control stabilization problem is transformed into the feasibility problem of linear matrix inequality (LMI), and the control parameters are solved directly, which avoids the inconvenience of using the intelligent algorithm to solve the parameters iteratively in the traditional methods. Finally, using the idea of networked control system, real-time estimation and unified processing of time-varying delay and packet loss in power system are adopted, and an adaptive Smith predictor is designed to overcome the influence of time-varying and packet loss of wide-area transmission signals. The two control schemes proposed in this paper are verified by simulation combined with relevant cases. The research in this paper is helpful to understand the influence of multiple transmission delay and time-varying transmission delay on power system, and a useful attempt is made in the field of design of damping controller for power system with multi-delay and time-varying delay. It has certain theoretical significance and practical value.
【學(xué)位授予單位】：華北電力大學(xué)
【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 薛飛;李剛;;能源互聯(lián)網(wǎng)的網(wǎng)絡(luò)化能源集成探討[J];電力系統(tǒng)自動(dòng)化;2016年01期

2 張放;程林;黎雄;曾敏;孫元章;宋云亭;;廣域閉環(huán)控制系統(tǒng)時(shí)延的測(cè)量及建模(二):閉環(huán)時(shí)延[J];中國(guó)電機(jī)工程學(xué)報(bào);2015年23期

3 劉運(yùn)花;黎雄;劉志雄;孫元章;周歧林;;基于灰色預(yù)測(cè)的廣域電力系統(tǒng)穩(wěn)定器分布延時(shí)補(bǔ)償設(shè)計(jì)[J];電力系統(tǒng)自動(dòng)化;2015年12期

4 李巖;胡志堅(jiān);劉宇凱;賀建波;索江鐳;;基于多目標(biāo)優(yōu)化的時(shí)滯廣域阻尼控制器設(shè)計(jì)[J];電力系統(tǒng)保護(hù)與控制;2015年08期

5 陳剛;張華;程林;滕予非;丁理杰;張放;;改進(jìn)的WPSS分段時(shí)延補(bǔ)償方法[J];電力自動(dòng)化設(shè)備;2014年12期

6 古麗扎提·海拉提;王杰;;廣義Hamilton多機(jī)電力系統(tǒng)的廣域時(shí)滯阻尼控制[J];中國(guó)電機(jī)工程學(xué)報(bào);2014年34期

7 索江鐳;胡志堅(jiān);張子泳;劉宇凱;陳珍;;含風(fēng)電場(chǎng)的互聯(lián)電力系統(tǒng)辨識(shí)與廣域時(shí)滯阻尼控制器設(shè)計(jì)[J];電力系統(tǒng)自動(dòng)化;2014年22期

8 李婷;吳敏;何勇;;計(jì)及廣域測(cè)量系統(tǒng)時(shí)滯影響的靈活交流輸電系統(tǒng)阻尼控制器多目標(biāo)設(shè)計(jì)[J];電工技術(shù)學(xué)報(bào);2014年08期

9 索江鐳;胡志堅(jiān);劉宇凱;湯鵬;張子泳;;大規(guī)模風(fēng)電并網(wǎng)后的電力系統(tǒng)廣域增益調(diào)度控制器設(shè)計(jì)[J];中國(guó)電機(jī)工程學(xué)報(bào);2014年22期

10 劉志雄;孫元章;黎雄;宋斌;劉振盛;方鳳美;;廣域電力系統(tǒng)穩(wěn)定器阻尼控制系統(tǒng)綜述及工程應(yīng)用展望[J];電力系統(tǒng)自動(dòng)化;2014年09期

相關(guān)博士學(xué)位論文 前1條

1 何勇;基于自由權(quán)矩陣的時(shí)滯相關(guān)魯棒穩(wěn)定與鎮(zhèn)定[D];中南大學(xué);2004年

，

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