本文選題：PCC + 水輪機(jī)調(diào)節(jié)��； 參考：《中原工學(xué)院》2014年碩士論文

【摘要】：本文閘述了可編程計(jì)算機(jī)控制（簡稱PCC）型水輪機(jī)調(diào)節(jié)系統(tǒng)及機(jī)組監(jiān)控系統(tǒng)的研究與應(yīng)用，對(duì)機(jī)組單機(jī)孤網(wǎng)、并網(wǎng)一次調(diào)頻及甩負(fù)荷的動(dòng)態(tài)調(diào)節(jié)特性進(jìn)行了仿真分析、工程驗(yàn)證。針對(duì)機(jī)組監(jiān)控系統(tǒng)NC2000在調(diào)試、運(yùn)行中暴露的問題進(jìn)行了匯總分析，提出了解決方案。 水輪機(jī)調(diào)節(jié)系統(tǒng)涉及引水系統(tǒng)、水輪發(fā)電機(jī)組、機(jī)組有功功率的聯(lián)動(dòng)，受電網(wǎng)負(fù)荷及頻率波動(dòng)影響，是一個(gè)結(jié)構(gòu)復(fù)雜、非線性、參數(shù)時(shí)變的動(dòng)態(tài)系統(tǒng)。本文依據(jù)水輪機(jī)調(diào)節(jié)系統(tǒng)工作原理，建立了調(diào)節(jié)系統(tǒng)動(dòng)態(tài)工況的數(shù)學(xué)模型，調(diào)速器控制器采用PCC調(diào)節(jié)，，頻率調(diào)節(jié)、功率調(diào)節(jié)模式下，通過檢測(cè)反饋的頻率偏差、功率偏差實(shí)施閉環(huán)控制。單機(jī)孤網(wǎng)運(yùn)行時(shí)，調(diào)速器采用并聯(lián)PID控制方式，由于抗擾動(dòng)與穩(wěn)定性不相容，現(xiàn)場(chǎng)采取優(yōu)先保證穩(wěn)定性的控制策略，其它參數(shù)通過給定值跟隨方式確定，仿真結(jié)果及實(shí)踐驗(yàn)證此方法較好的緩解了抗擾動(dòng)和穩(wěn)定性之間的矛盾。并網(wǎng)后調(diào)速器采用改進(jìn)PID控制方式，機(jī)組一次調(diào)頻不具備多次進(jìn)行的條件，甩負(fù)荷試驗(yàn)現(xiàn)場(chǎng)也不宜多次進(jìn)行，為了給試驗(yàn)提供參考依據(jù)，通過仿真手段，從定性和比較的意義上說明了水輪機(jī)調(diào)節(jié)系統(tǒng)調(diào)節(jié)過程，為現(xiàn)場(chǎng)調(diào)節(jié)參數(shù)的調(diào)整、優(yōu)化提供了技術(shù)支持。 水輪發(fā)電機(jī)組計(jì)算機(jī)監(jiān)控系統(tǒng)硬件采用基于可編程邏輯控制器（簡稱PLC）的現(xiàn)地控制單元（簡稱LCU），軟件采用南瑞NC2000，機(jī)組出力調(diào)節(jié)依監(jiān)控系統(tǒng)指令執(zhí)行。監(jiān)控系統(tǒng)采用CLIENT SERVE體系結(jié)構(gòu)，實(shí)現(xiàn)了機(jī)組監(jiān)控的“遙信、遙測(cè)、遙調(diào)”功能及實(shí)時(shí)不間斷監(jiān)控。調(diào)試、運(yùn)行結(jié)果顯示，系統(tǒng)控制精度高、數(shù)據(jù)傳輸可靠、易維護(hù)，具有較高的技術(shù)水平。針對(duì)特定電網(wǎng)運(yùn)行模式下機(jī)組機(jī)端電壓高的問題，用電力系統(tǒng)仿真圖還原了系統(tǒng)工況，提出了相應(yīng)解決方案。針對(duì)運(yùn)行中暴露的自動(dòng)控制方面的問題，從硬件及軟件方面提出了解決方案，對(duì)水電站自動(dòng)控制設(shè)計(jì)及優(yōu)化有一定的借鑒作用。
[Abstract]:In this paper, the research and application of programmable computer control (PCC-based) hydraulic turbine regulation system and unit monitoring system are described. The dynamic regulation characteristics of single unit isolated network, primary frequency modulation and load rejection are simulated and verified by engineering. The problems exposed in the commissioning and operation of the unit monitoring system NC2000 are summarized and analyzed, and the solutions are put forward. The governing system of hydraulic turbine is a complex, nonlinear and time-varying dynamic system, which involves the connection of diversion system, turbine generator set and active power unit, and is affected by the load and frequency fluctuation of power grid. According to the working principle of the governing system of hydraulic turbine, the mathematical model of the dynamic working condition of the regulating system is established in this paper. The governor controller adopts the mode of PCC regulation, frequency regulation and power regulation, and detects the frequency deviation of feedback by detecting the frequency deviation. The power deviation is controlled by closed loop. The governor adopts parallel PID control mode when the single machine is running in isolation network. Because of the incompatibility between anti-disturbance and stability, the control strategy of ensuring stability is adopted in the field, and the other parameters are determined by the way of following the given value. Simulation results and practice show that this method can alleviate the contradiction between anti-disturbance and stability. After connecting to the grid, the governor adopts the improved PID control mode, the primary frequency modulation of the unit does not have the condition to carry on many times, and the load rejection test site should not be carried out many times. In order to provide the reference basis for the test, the simulation method is adopted. The regulation process of hydraulic turbine regulating system is explained in the sense of qualitative and comparative analysis, which provides technical support for the adjustment and optimization of field regulation parameters. The hardware of computer monitoring system for hydroelectric generating set is based on PLC-based locale control unit (LCU) and the software is Nari NC2000. The unit output regulation is carried out according to the command of monitoring system. The monitoring system adopts CLIENT SERVE architecture, and realizes the functions of "remote signal, telemetry, remote adjustment" and real-time continuous monitoring. The debugging and running results show that the system has high control precision, reliable data transmission, easy maintenance and high technical level. In order to solve the problem of high terminal voltage of generating unit in specific grid operation mode, the system working condition is restored by power system simulation diagram, and the corresponding solution is put forward. In view of the problems of automatic control exposed in operation, this paper puts forward a solution from the aspects of hardware and software, which can be used for reference in the design and optimization of automatic control of hydropower stations.
【學(xué)位授予單位】：中原工學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TK730

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉玉梅,王金華;水輪機(jī)被控系統(tǒng)的特征及其數(shù)學(xué)模型的建立[J];大電機(jī)技術(shù);1999年05期

2 南海鵬,羅興,賈嶸;基于PP41的步進(jìn)式水輪機(jī)調(diào)速器[J];大電機(jī)技術(shù);2004年05期

3 吳家泉;譚昆玲;阮永平;;電力系統(tǒng)無功補(bǔ)償仿真分析[J];電力電容器;2005年04期

4 南海鵬,姚李孝,王德意;PCC測(cè)頻測(cè)相裝置研究[J];電網(wǎng)技術(shù);2001年09期

5 魯慶;;基于MATLAB動(dòng)態(tài)無功補(bǔ)償仿真研究[J];工業(yè)控制計(jì)算機(jī);2010年12期

6 趙林明;建立水輪機(jī)數(shù)學(xué)模型的一些方法[J];河北水利水電技術(shù);1995年03期

7 張海霞,魏守平,常黎,龔飚;基于PLC的水電站同期選線控制研究與設(shè)計(jì)[J];繼電器;2004年13期

8 韓平;趙勇;李曉朋;石光;王洪濤;包偉;李健;;繼電保護(hù)狀態(tài)檢修的實(shí)用化嘗試[J];電力系統(tǒng)保護(hù)與控制;2010年19期

9 ;Dynamic extending nonlinear H_∞ control and its application to hydraulic turbine governor[J];Science in China(Series E:Technological Sciences);2007年05期

10 潘熙和;齊耀華;嚴(yán)國強(qiáng);雷玉波;;PCC水輪機(jī)調(diào)速器與PCC勵(lì)磁研究及應(yīng)用[J];人民長江;2005年12期

本文編號(hào)：1779208