热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2014年
10期
46-50,61
,共6页
飞灰含碳量%软测量%支持向量回归%交叉验证法
飛灰含碳量%軟測量%支持嚮量迴歸%交扠驗證法
비회함탄량%연측량%지지향량회귀%교차험증법
carbon content in fly ash%soft sensor%support vector regression%cross validation method
针对锅炉飞灰含碳量难以准确测量的问题，提出了一种基于支持向量回归的软测量方法。以大唐潮州电厂超超临界1000 MW 机组为研究对象，建立了基于支持向量回归的飞灰含碳量软测量模型，采用交叉验证法优化了模型的惩罚参数 C 和核函数参数 g ，并利用测试数据和在3种机组负荷下的随机数据验证了模型的准确性和泛化能力。仿真结果表明，飞灰含碳量软测量模型的预测精度较高，且泛化能力较强，为锅炉飞灰含碳量测量提供了一种有效的方法。
針對鍋爐飛灰含碳量難以準確測量的問題，提齣瞭一種基于支持嚮量迴歸的軟測量方法。以大唐潮州電廠超超臨界1000 MW 機組為研究對象，建立瞭基于支持嚮量迴歸的飛灰含碳量軟測量模型，採用交扠驗證法優化瞭模型的懲罰參數 C 和覈函數參數 g ，併利用測試數據和在3種機組負荷下的隨機數據驗證瞭模型的準確性和汎化能力。倣真結果錶明，飛灰含碳量軟測量模型的預測精度較高，且汎化能力較彊，為鍋爐飛灰含碳量測量提供瞭一種有效的方法。
침대과로비회함탄량난이준학측량적문제，제출료일충기우지지향량회귀적연측량방법。이대당조주전엄초초림계1000 MW 궤조위연구대상，건립료기우지지향량회귀적비회함탄량연측량모형，채용교차험증법우화료모형적징벌삼수 C 화핵함수삼수 g ，병이용측시수거화재3충궤조부하하적수궤수거험증료모형적준학성화범화능력。방진결과표명，비회함탄량연측량모형적예측정도교고，차범화능력교강，위과로비회함탄량측량제공료일충유효적방법。
Against the problem that carbon content in boiler fly ash is difficult to measure accurately,a soft sensor method based on support vector regression was proposed.Taking the ultra supercritical unit in Da-tang Chaozhou Power Plant as the research object,a support vector regression based model predicting the carbon content in fly ash was established,and cross validation method was applied to optimize the penalty parameter C and kernel function parameter g for the model.Moreover,the model's accuracy and generaliza-tion capability were verified by using the test data and random data obtained under three unit load condi-tions.The simulation results show that the soft sensor model of the carbon content in fly ash has higher prediction accuracy and better generalization ability,which provides an effective way for measurement of the carbon content in boiler fly ash.
