本文選題：負(fù)荷頻率控制 + 魯棒性��； 參考：《華北電力大學(xué)(北京)》2017年博士論文

【摘要】：負(fù)荷頻率控制是保證電力系統(tǒng)穩(wěn)定運(yùn)行的重要措施。隨著電力系統(tǒng)網(wǎng)絡(luò)復(fù)雜性的不斷增加,特別是市場(chǎng)環(huán)境下解除管制后電力市場(chǎng)的發(fā)展,負(fù)荷頻率控制魯棒性能和抗擾性能顯得更為重要。本文針對(duì)負(fù)荷頻率控制系統(tǒng)的結(jié)構(gòu)特性,提出分析分散負(fù)荷頻率控制下系統(tǒng)穩(wěn)定及魯棒性分析方法,并提出采用自抗擾控制方案提高負(fù)荷頻率控制系統(tǒng)的抗擾能力。主要研究?jī)?nèi)容包括:1.針對(duì)多區(qū)域負(fù)荷頻率控制系統(tǒng)的結(jié)構(gòu)特征,提出分散負(fù)荷頻率控制下閉環(huán)系統(tǒng)穩(wěn)定性分析方法,并將閉環(huán)系統(tǒng)魯棒性分析分解成兩部分:局域系統(tǒng)參數(shù)魯棒性分析和聯(lián)絡(luò)線網(wǎng)絡(luò)拓?fù)漪敯粜苑治�。該方案減小了系統(tǒng)魯棒性分析的復(fù)雜性,可以揭示聯(lián)絡(luò)線網(wǎng)絡(luò)拓?fù)鋵?duì)系統(tǒng)穩(wěn)定性的影響,為互聯(lián)電力系統(tǒng)網(wǎng)絡(luò)建設(shè)提供參考。2.針對(duì)負(fù)荷頻率控制系統(tǒng)的抗擾性能,提出采用自抗擾控制,利用自抗擾控制的在線擾動(dòng)估計(jì)功能,提高系統(tǒng)抗擾能力。對(duì)負(fù)荷頻率控制系統(tǒng)的自抗擾控制階數(shù)及參數(shù)進(jìn)行了分析,并對(duì)不同發(fā)電機(jī)組的電力系統(tǒng)提出參數(shù)整定方法。針對(duì)負(fù)荷頻率控制系統(tǒng)存在的發(fā)電速率約束問(wèn)題,提出了針對(duì)自抗擾控制結(jié)構(gòu)的抗飽和補(bǔ)償方案。仿真表明,自抗擾控制參數(shù)整定簡(jiǎn)單,性能強(qiáng)于普通PID控制器,在負(fù)荷頻率控制中具有較大應(yīng)用價(jià)值。3.分析了電力市場(chǎng)環(huán)境下的負(fù)荷頻率控制系統(tǒng)結(jié)構(gòu),表明市場(chǎng)環(huán)境下合同負(fù)荷相當(dāng)于在普通環(huán)境下增加了多處擾動(dòng),從而市場(chǎng)環(huán)境下負(fù)荷頻率控制系統(tǒng)需要具有更強(qiáng)的抗擾性能。分析了電力市場(chǎng)環(huán)境下分散負(fù)荷頻率控制系統(tǒng)的穩(wěn)定性,結(jié)果表明:合同負(fù)荷并不能改變普通環(huán)境下系統(tǒng)的穩(wěn)定性,因此市場(chǎng)環(huán)境下仍可以采用普通環(huán)境下的控制器設(shè)計(jì)方法,自抗擾控制是市場(chǎng)環(huán)境下負(fù)荷頻率控制設(shè)計(jì)的有效手段。
[Abstract]:Load frequency control is an important measure to ensure the stable operation of power system. With the increasing complexity of power system network, especially the development of power market after deregulation, the robust performance and anti-disturbance performance of load frequency control become more and more important. According to the structural characteristics of the load frequency control system, this paper presents a method to analyze the stability and robustness of the system under the distributed load frequency control, and proposes to improve the anti-disturbance ability of the load frequency control system by using the auto disturbance rejection control scheme. The main research contents include: 1. In view of the structural characteristics of multi-area load frequency control system, a method for stability analysis of closed-loop system under decentralized load frequency control is proposed. The closed-loop system robustness analysis is divided into two parts: the local system parameter robustness analysis and the tie-line network topology robustness analysis. This scheme reduces the complexity of system robustness analysis and reveals the influence of tie-line network topology on system stability and provides a reference for the construction of interconnected power system network. Aiming at the disturbance rejection performance of load frequency control system, an active disturbance rejection control and on-line disturbance estimation function of automatic disturbance rejection control are proposed to improve the disturbance rejection ability of the system. In this paper, the order and parameters of active disturbance rejection control for load frequency control system are analyzed, and the method of parameter setting for power system of different generator sets is proposed. In order to solve the generation rate constraint problem of load frequency control system, an anti-saturation compensation scheme is proposed for the active disturbance rejection control (ADRC) structure. The simulation results show that the ADRC parameter setting is simple and the performance is better than that of the conventional PID controller. It has great application value in load frequency control. The structure of load frequency control system in power market environment is analyzed. It is shown that the contract load under the market environment is equivalent to adding multiple disturbances in the ordinary environment, so the load frequency control system in the market environment needs stronger immunity performance. The stability of decentralized load frequency control system in power market environment is analyzed. The results show that the contract load can not change the stability of the system under ordinary environment, so the controller design method in general environment can still be adopted in the market environment. Active disturbance rejection control (ADRC) is an effective method to design load frequency control in market environment.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM732;TP273

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