The 2503ah family meets every detail of the iec1000 - 3 requirements , including the max , 0 . 15v peak voltage drop across the instruments and the no gap overlap 16 cycle stipulation for fluctuating harmonic measurements 2503ah符合iec1000 - 3的各项要求细则,包括最大0 . 15峰值跨越仪器的电压降和波动谐波测量的没有间隙重叠16周期规定
An optimization model of distribution network reconfiguration is established , in which the minimum network loss is taken as objective function , the restrictions to the decline of voltage and current are taken as constraint conditions 以网损最小为目标函数，以配电网电压降的限制、线路电流量的限制等为约束条件，建立了配电网络重构优化模型。
Floating power supply is used to neutron tube in logging neutron generator , which minimizes the space of high - strength electric field , and reduces the voltage gradient by 1 / 3 in the high - strength electric field 摘要井下中子发生器高压倍加电路采用中子管悬浮式供电，使高电场强度的空间范围缩小，高电场强度区间内单位距离的电压降减少了1 / 3左右。
The fundamental law that is applied in this method is kirchhoff ' s first law , which states that the algebraic sum of the voltage around a closed loop is 0 , or , in any closed loop , the sum of the voltage rises must equal the sum of the voltage drop 该方法所使用的一个基本定律是基尔霍夫第一定律，该定律表述为：沿着一个封闭回路的电压代数和为0 ，或者：沿着一个封闭的回路，电压降之和等于电压升之和。
Using the sandwich current collector , which has a dense sic interlayer between the two reticulated sic , the current distribution and voltage loss in positive grid were improved , which resulted in the significant enhancement of the utilization efficiency of pam and the ability of discharging with large current 集流体的“三明治”结构改善了极板内的电流分布，降低了电压降，明显提高了铅酸蓄电池活性物质的利用率和大电流放电的能力。
Specific issues examined are : compensation for the variation of the stator resistance , the offset error of the dc bus voltage , the voltage error generated by the forward voltage drop the dead time of the switches , improvement of the steady state performance , and the speed sensorless control for the pmsm dtc drive system are of major concern in this thesis 定子电阻变化，直流母线电压漂移，开关器件反向相电压降、逆变器死区时间引起的电压误差的补偿，提高系统稳态运行性能以及永磁同步电机直接转矩控制的无速度传感器运行方案等问题都是本文研究的重点。转矩的快速响应是直接转矩控制算法的一个卓越的性能。
This project makes some researches with emphasis on the mv / lv distribution power supply situation under the present load condition . some results such as the calculation of line load rate , theoretical line consumption rate and electric voltage decrease are acquired by the mathematical analysis , and thus the power supply capability is evaluated comprehensively . the same has been done to the lv power network 课题在系统搜集分析苏州供电企业的背景资料，即企业概况、电力需求、输电网、高压配电网状况基础上，重点研究了当前负荷下的中低压配电网供电情况，并通过数学分析得出线路的负载率的计算、理论线损率以及电压降等各项运行指标，综合评估得出其供电能力。
Power grid integrity analysis can be implemented in four steps : first , to extract the r parameters of the power grid ; second , to partition the power grid when needed and in the same time extract the current ; third , to reduce the power grid efficiently ; and the last , to construct the nodal analysis equations of the global and local power grids and solve them 电源网格的irdrop分析可以分为四步完成：首先提取电源网格的版图参数；然后根据需要(通常根据网络大小)对电源网格进行划分，同时提取各实例的工作电流；对电源网格进行有效压缩；最后建立全局和子网网络的节点电压方程，求解各方程得到全部节点的电压降。
Secondly , their aims are made the investment of substations , feeders or running cost of electric power system minimum . but they do n ' t take into account of land utilization , street accessibility of right of way , etc . , but demands of electric power system . generally , a straight line distance , namely , euclid distance , was used for calculating the distance between a load point and a substation , which is a straight forward but non - practical way for most planning techniques 其次受研究工具的限制，这些模型以工程投资、运行费用等最小为目标，仅能考虑导线载流量、电压降等电力系统技术约束条件，简化略去了用地限制、街道可达性等重要的自然约束条件，且求解这些模型的前奏是计算负荷点到变电所的欧几里得距离(直线距离) ，简便但不切合实际(这一点在城市电网规划中尤其重要) ，因此较难给出技术上可行的最优解。
