受基本方程規(guī)范的火電機組耗量特性系數(shù)辨識
發(fā)布時間：2018-07-28 17:33
【摘要】：火電機組燃料耗量 功率特性系數(shù)的準確辨識,是實施節(jié)能發(fā)電優(yōu)化調(diào)度的基礎(chǔ)與前提。為保障辨識精度,需在辨識過程中特別考慮反映耗量關(guān)鍵特征的基本方程。為此,提出一種受基本方程規(guī)范的火電機組耗量特性abc系數(shù)優(yōu)化辨識方法。方法首先建立了反映火電機組耗量特性關(guān)鍵特征的3個基本方程,然后從正平衡角度出發(fā),建立了受3個基本方程規(guī)范的、以擬合誤差最小化為目標函數(shù)的優(yōu)化辨識模型,最后給出了待辨識abc系數(shù)的解析解。基于某省火電機組在線監(jiān)測系統(tǒng)采集的實際數(shù)據(jù)進行算例分析,結(jié)果表明,所提方法能在比較好地保持機組耗量特性關(guān)鍵特征的基礎(chǔ)上,自適應(yīng)地為火電機組的不同運行方式"量身定制"式地辨識出一套合體的abc系數(shù),有助于使始終依賴于一組固定不變的abc系數(shù)參與優(yōu)化調(diào)度的傳統(tǒng)方式向采用定制式abc系數(shù)進行現(xiàn)代優(yōu)化調(diào)度的階段升級。
[Abstract]:The accurate identification of fuel consumption and power characteristic coefficient of thermal power units is the basis and prerequisite for the optimal dispatching of energy-saving power generation. In order to ensure the identification accuracy, the basic equations reflecting the key characteristics of consumption should be specially considered in the identification process. This paper presents an optimal identification method for abc coefficients of thermal power unit consumption characteristics, which is governed by basic equations. Methods first, three basic equations reflecting the key characteristics of thermal power unit consumption characteristics were established, and then, from the perspective of positive balance, an optimal identification model with the objective function of minimizing fitting error was established, which was regulated by three basic equations and took the minimization of fitting error as the objective function. Finally, the analytical solution of the abc coefficient is given. Based on the actual data collected from the on-line monitoring system of thermal power units in a province, the results show that the proposed method can keep the key characteristics of unit consumption characteristics well. Adaptively identifying a set of fit abc coefficients for different operation modes of thermal power units "tailor-made". It is helpful to upgrade the traditional way which always depends on a fixed set of abc coefficients to participate in the optimal scheduling to the stage of adopting customized abc coefficients for modern optimal scheduling.
【作者單位】： 國網(wǎng)遼寧省電力有限公司;哈爾濱工業(yè)大學(xué)電氣工程及自動化學(xué)院;
【基金】：國家自然科學(xué)基金項目(51077027)~~
【分類號】：TM621
，
本文編號：2151069
[Abstract]:The accurate identification of fuel consumption and power characteristic coefficient of thermal power units is the basis and prerequisite for the optimal dispatching of energy-saving power generation. In order to ensure the identification accuracy, the basic equations reflecting the key characteristics of consumption should be specially considered in the identification process. This paper presents an optimal identification method for abc coefficients of thermal power unit consumption characteristics, which is governed by basic equations. Methods first, three basic equations reflecting the key characteristics of thermal power unit consumption characteristics were established, and then, from the perspective of positive balance, an optimal identification model with the objective function of minimizing fitting error was established, which was regulated by three basic equations and took the minimization of fitting error as the objective function. Finally, the analytical solution of the abc coefficient is given. Based on the actual data collected from the on-line monitoring system of thermal power units in a province, the results show that the proposed method can keep the key characteristics of unit consumption characteristics well. Adaptively identifying a set of fit abc coefficients for different operation modes of thermal power units "tailor-made". It is helpful to upgrade the traditional way which always depends on a fixed set of abc coefficients to participate in the optimal scheduling to the stage of adopting customized abc coefficients for modern optimal scheduling.
【作者單位】： 國網(wǎng)遼寧省電力有限公司;哈爾濱工業(yè)大學(xué)電氣工程及自動化學(xué)院;
【基金】：國家自然科學(xué)基金項目(51077027)~~
【分類號】：TM621
，
本文編號：2151069
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