西南交通大学学报
西南交通大學學報
서남교통대학학보
JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY
2014年
3期
494-498
,共5页
摇摆角%柴油发电机组%稳定度%并联运行%算法
搖襬角%柴油髮電機組%穩定度%併聯運行%算法
요파각%시유발전궤조%은정도%병련운행%산법
swing angle%diesel generator sets%stability degree%parallel operation%algorithm
在船舶电站模拟器研制中,为了对柴油发电机组并联运行时的失步进行监视并定量分析其稳定性,推导了摇摆角的参数计算公式,提出了发电机组摇摆曲线参数的在线算法。通过求解多阶导数构成的状态方程组,求出了曲线的指数参数。定义并联运行稳定度,利用Simulink工具箱构建了仿真系统验证该算法。算例仿真结果表明:并联运行稳定度可以指示发电机组并联运行的稳定裕量;在电站模拟器训练中,该算法所求的参数能够及时反映发电机组并联运行的稳定性;发电机组的摇摆曲线参数可由曲线的1~4阶导数确定;当指数参数随时间变化或曲线数据离散时,可用五点式插值求导方法得到指数参数。
在船舶電站模擬器研製中,為瞭對柴油髮電機組併聯運行時的失步進行鑑視併定量分析其穩定性,推導瞭搖襬角的參數計算公式,提齣瞭髮電機組搖襬麯線參數的在線算法。通過求解多階導數構成的狀態方程組,求齣瞭麯線的指數參數。定義併聯運行穩定度,利用Simulink工具箱構建瞭倣真繫統驗證該算法。算例倣真結果錶明:併聯運行穩定度可以指示髮電機組併聯運行的穩定裕量;在電站模擬器訓練中,該算法所求的參數能夠及時反映髮電機組併聯運行的穩定性;髮電機組的搖襬麯線參數可由麯線的1~4階導數確定;噹指數參數隨時間變化或麯線數據離散時,可用五點式插值求導方法得到指數參數。
재선박전참모의기연제중,위료대시유발전궤조병련운행시적실보진행감시병정량분석기은정성,추도료요파각적삼수계산공식,제출료발전궤조요파곡선삼수적재선산법。통과구해다계도수구성적상태방정조,구출료곡선적지수삼수。정의병련운행은정도,이용Simulink공구상구건료방진계통험증해산법。산례방진결과표명:병련운행은정도가이지시발전궤조병련운행적은정유량;재전참모의기훈련중,해산법소구적삼수능구급시반영발전궤조병련운행적은정성;발전궤조적요파곡선삼수가유곡선적1~4계도수학정;당지수삼수수시간변화혹곡선수거리산시,가용오점식삽치구도방법득도지수삼수。
In order to analyze quantitatively the stability of parallel operation of diesel generator sets and monitor the state of generators being out of step during development of a simulator for the ship power system,calculation formulae for parameters of the swing angle were deduced. An on-line algorithm for calculating the parameters of swing curves of generators was presented, and the parametric exponents of the curve were calculated by solving high-order state differential equations. In addition,the stability degree of parallel operation (SDPO)was defined,and the Simulink tool box was used to set up a simulation system to verify the algorithm. The results of simulation examples show that the SDPO can indicate the stability allowance of parallel operation of diesel generator sets. The parameters obtained by the algorithm can reflect the stability of parallel operation in real time during the simulator training. The parameters of the swing curve can be determined by differentiation of the curve from the first to the forth order. When the exponents change with time or the data of the curve are discrete,the parametric exponent can be obtained by derivation using the five-point interpolation method.