Fault calculation involves determining the faultcurrentin a power system. It typically includes three main steps. Choice of impedance rotations. Reduction of complicated electrical power system network to single equivalent impedance. Electrical fault currents and voltages calculation by using symmetrical compo...
PowerJob的worker需要配置powerjob.worker.server-address属性,它可以配置多个地址和port,但是默认请求discovery的时候是按顺序遍历下来,这个后续可以优化为随机。另外请求server端获取该appName的currentServer的时候,也在一定程度上依赖了本机地址去负责该请求的worker,这个也是跟配置顺序有关系。官方是建议配置域名,通过域名负...
is the eigenvalue calculation function of a square matrix. eig (AT × A) represents the eigenvector [λ1,…, λi,…]T of matrix A.λi represents the ith eigenvalue. In this research, the length of the data acquisition time window is set to 10 ms. A fault is considered to ...
精确的浮点操作: >>> from decimal import * >>> x = Decimal('0.70') * Decimal('1.05') >>> x Decimal('0.7350') >>> x.quantize(Decimal('0.01')) # round to nearest cent Decimal(huanying guanzhu : '0.74') >>> round(.70 * 1.05, 2) # same calculation with floats 0.73 python 本...
Table 1. Some of the notations commonly utilized in suspiciousness calculation. NotationDescription N The total number of test inputs Nf The total number of failed test inputs Ns The total number of passed test inputs Ncf The total number of failed test inputs that cover a statement Ncs The...
COMMUNICATION NETWORK FAULT FREQUENCY CALCULATION METHOD, APPARATUS AND PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM WITH THE PROGRAM RECORDED THEREONPROBLEM TO BE SOLVED: To provide a technology for calculating a fault frequency of a communication network at high speed.HAYASHI MASAHIRO...
Since the coupling effect of overhead earth wires to phase conductors was not taken into account by the Endrenyi method, the computed fault current-division factor will be greater than those obtained by the proposed method and CDEGS program. Moreover, mesh and step voltages are computed to ...
Expected direct cost calculation The expected direct costs of EV battery fault and inspection are calculated as: $$y(p,\, {c}_{{{\rm{f}}},\, {c}_{{{\rm{r}}},\, {q}_{{{\rm{TP}}},\, {q}_{{{\rm{FP}}})=p(1-{q}_{{{\rm{TP}}}){c}_{{{\rm{f}}}+[\,p{q...
It can be seen that the core of dynamic programming is to use memorization to eliminate the calculation of repeated sub-problems. If the scale of this repeated sub-problem is exponential or higher, then the benefits of memorizing recursive (or dynamic programming) will be very large. Big....
Prevention and inspection Of course, as a developer, you must avoid some performance problems when writing code. for example: • Optimize calculation complexity to reduce CPU usage • Write unit tests •...and many more Of course, making good use of tools can efficiently monitor App perfor...