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 fundamental power flow 基波潮流(5)
 基波潮流
 In the aspect of harmonic power flow calculations, byborrowing the solution method used in fundamental power flow calculation, a novelback/forward sweep distribution harmonic flow algorithm is presented, which helps tocalculate harmonic currents, harmonic voltages and total harmonic distortion (THD)rapidly even for a large-scale distribution system. 在谐波潮流计算方面,本文对现有的典型算法和谐波源模型进行了全面分析和评价,并借鉴辐射状配电网基波潮流的求解思路,提出了一种适用于辐射状配电网的前推回推谐波潮流算法,该算法能够快速、有效地计算配电网的谐波畸变指标,且所需计算时间不随网络规模的增大而显著增加。 短句来源 Utilizing the decoupling of fundamental power flow and harmonic power flow, the result of distribution system harmonic power flow is got in the view of actual project. 文章从工程的角度出发，利用基波潮流和谐波潮流的解耦性，求解配电网谐波潮流。 短句来源 The unsymmetrical fundamental power flow iscalculated using 3--phase P-Q decoupling algorithm, while the unsymmetrical harmonic power flow is calculated by solving thelinear 3--phase node current equation. 不对称基波潮流计算采用三相 P— Q分解法 ,而不对称谐波潮流计算则采用解线性三相节点方程的方法。 短句来源 On the basis of the linear harmonic flowalgorithms and the nonlinear harmonic flow algorithms adecoupled harmonic flow algorithm is given, in which thesimultaneous iteration of fundamental power flow withharmonic flows in conventional non-linear algorithms ischanged into separated iteration. 从电力系统谐波潮流计算的线性算法和非线性算法出发,提出了谐波潮流的一种解耦算法,改变常规非线性算法中将基波潮流与谐波潮流联立迭代的方法,使两者分立求解。 短句来源 Based on the decoupling of fundamental power flow and harmonic power flow, a separate iteration method for calculating three-phase asymmetrical harmonic power flow in power system is presented. 以基波潮流和谐波潮流的解耦性为基础,提出了一种将电力系统三相不对称基波潮流和谐波潮流分离迭代的计算方法.
 “fundamental power flow”译为未确定词的双语例句
 In this algorithm,the three-phase fundamental power flow is solved by the PQ decoupled method in which the sparse and symmetrical matrix handling technology and three-phase factor table are used,thus memory is saved and computing quantity is decreased. 其中，基波计算部分采用PQ分解法，并采用稀疏矩阵和对称矩阵处理技术，利用三相因子表求解，在很大程度上节省了内存，减少了计算量； 短句来源
 相似匹配句对
 power; 权力 ; 短句来源 Subjectivity:the power of fundamental education 主体性:基础教育的生命特征 短句来源 the power; 动力论; 短句来源 Power Balance and Fundamental Wave Analysis 功率平衡与基波分析法 短句来源 e. fundamental goals. 五是根本目标不同。 短句来源

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 This paper proposes a computation method of harmonic power flow via reducing dimension.Based on the conventional computation method of fundamental power flow and harmonic power flow. 2 (n-1) + 2nL mismatch equations (including both variable number and equation number 2 (n-1) +2nL) can be transferred into a combination of a group of 2 (n-1) dimension equations (variable number 2 (n-1). equation number 2 (n-1) ) and 2nL dimension equations through analyzing the structure of Jocabian matrix in... This paper proposes a computation method of harmonic power flow via reducing dimension.Based on the conventional computation method of fundamental power flow and harmonic power flow. 2 (n-1) + 2nL mismatch equations (including both variable number and equation number 2 (n-1) +2nL) can be transferred into a combination of a group of 2 (n-1) dimension equations (variable number 2 (n-1). equation number 2 (n-1) ) and 2nL dimension equations through analyzing the structure of Jocabian matrix in its mismatch harmonic power flow equations and using iterative method. Simultaneously. this 2nL dimension equations also can be solved by a group of 2n dimension equations (the group number is L). respectively. The new computation method can greatly save its storage in software. speed up the computation of harmonic power flow. and raise its convergence. The theory, flow chart and numerical simulation are also presented in this paper. Its effectiveness and flexibility have been proved via realization of software and numerical calculation. 提出了一种电力系统谐波潮流的降维计算方法。它基于通用的常规基波和谐波潮流计算方法，通过分析谐波潮流计算偏差量方程中雅可比矩阵的结构和利用迭代求解的原理，可以将含有２（ｎ－１）＋２ｎＬ个变量的２（ｎ－１）＋２ｎＬ个需联立才能求解的偏差量方程组（ｎ为电网节点数，Ｌ为所含有的谐波种数）转化为仍含有２（ｎ－１）＋２ｎＬ个变量，但只需分别求解Ｌ个含有２ｎ个变量的联立方程组和一个含有２（ｎ－１）个变量的联立方程的组合，从而使偏差量方程降维。该降维计算方法能大大缩小计算程序的内存占用量，加快和提高谐波潮流的计算速度和收敛性。文中给出了降维计算方法的原理、程序、实现框图及实例。 The mathematical model of SS4 electric locomotive,made in China,is first introduced.Then considering the harmonic source as a controled current source,a new algorithm for calculating three-phase asymmetrical harmonic power flow in power systems with traction loads is presented.In this algorithm,the three-phase fundamental power flow is solved by the PQ decoupled method in which the sparse and symmetrical matrix handling... The mathematical model of SS4 electric locomotive,made in China,is first introduced.Then considering the harmonic source as a controled current source,a new algorithm for calculating three-phase asymmetrical harmonic power flow in power systems with traction loads is presented.In this algorithm,the three-phase fundamental power flow is solved by the PQ decoupled method in which the sparse and symmetrical matrix handling technology and three-phase factor table are used,thus memory is saved and computing quantity is decreased.The three-phase harmonic power flow is directly solved by Gaussian elimination method with linear nodal voltage equation,thus there exists no convergence problem.The fundamental and harmonic nodal voltage and branch current are solved by decoupled iteration of fundamental and harmonic power flow.The calculation results of some typical examples show that this algorithm can effectively save memory and has good convergence. 以国产ＳＳ４型电力机车的数学模型为基础，将谐波源作为受控电流源，提出了含牵引负荷的电力系统三相不对称谐波潮流新算法。其中，基波计算部分采用ＰＱ分解法，并采用稀疏矩阵和对称矩阵处理技术，利用三相因子表求解，在很大程度上节省了内存，减少了计算量；谐波计算部分采用节点电压方程，利用高斯消去法直接求解，不存在收敛性问题。基波和谐波潮流进行分离相关迭代，最终求出各节点的基波和谐波电压以及各支路的基波功率和谐波电流。算例表明，该算法能有效地节省内存，且收敛性较好 This paper presents a separate iteration method for unsymmetrical harmonic power flow calculation. By thismethod, the fundamental power flow and harmonic power flow are decoupled. The unsymmetrical fundamental power flow iscalculated using 3--phase P-Q decoupling algorithm, while the unsymmetrical harmonic power flow is calculated by solving thelinear 3--phase node current equation. An example of an actual power system demonstrates that high-speed calculation. lessoccupied... This paper presents a separate iteration method for unsymmetrical harmonic power flow calculation. By thismethod, the fundamental power flow and harmonic power flow are decoupled. The unsymmetrical fundamental power flow iscalculated using 3--phase P-Q decoupling algorithm, while the unsymmetrical harmonic power flow is calculated by solving thelinear 3--phase node current equation. An example of an actual power system demonstrates that high-speed calculation. lessoccupied memory and reliable convergence can be obtained by the separate iteration method, and the proposed method may beused for harmonic power flow calculation of large power system. 提出了一种电力系统不对称谐波 (基波 )潮流的分立迭代算法 ,该方法实现了基波潮流与谐波潮流的解耦。不对称基波潮流计算采用三相 P— Q分解法 ,而不对称谐波潮流计算则采用解线性三相节点方程的方法。通过对某一实际电网的计算表明 ,这种不对称谐波 (基波 )潮流计算方法计算速度快、占用内存少、收敛可靠 ,可用于大规模系统谐波潮流的计算 << 更多相关文摘
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