Before a fault current calculation can be performed, all of the possible sources of current must be identified. This can include some sources of current that may not have been considered. There are four possible sources of short-circuit fault current: On-site electric generators: These are close...
When the amount of calculation increases with the number of times, the difference between n and 1 is not too large, and the $n^2$ curve becomes larger and larger, so this is also 2$n^2$+3n+1 -> $n^2$ will finally be estimated as $n^2$, because 3n+1 is basically negligible ...
Recording formula(saves time, consumes space, does not need to be calculated, and directly takes the value, that is: space for time): Store the information, and take it out when needed. calculation formula(saving space, time-consuming, no need to store, calculation value, namely: time for ...
The calculation formula is expressed as 21(12)fm=σ(seg∗kopt+bopt)where * is the convolution operation symbol. The pooling operation can make the extracted features local translation invariant, which is very useful for fault detection in the ACARS segment because we are not considering the ...
Its value is the difference between the calculation value and the voltage data at the commissioning test stage under the specified current. In the case of shunt fault occurrence, the difference will be recalculated in proportion to the distance between the station and the shunt fault point. In ...
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 ...
On the premise of effectively clearing faulty element of inner fuse,it is shown by both theoretical analysis and simulation calculation that the ratio K of unbalance current of HV capacitor to the total current of AC filter increases with the increase of element numbers and the calculation of ...
Finally, to confirm the reliability of the proposed model, Re, a reliability calculation method in the quality control field, is used herein. The circuit is a series connection system, i.e., the fault level diagnosis of the proposed model is also a series mode, so the reliability, Re, ca...
Taking open source projects as an example, some domestic commercial companies are overly pursuing the number of stars, but his "developer activity" is given in"GitHub 2020 Digital Insight Report"The calculation formula, the number of stars in open source projects does not reflect the activity of...
At this time, the calculation formula changes fromhash(key)% Ntohash(server ip)% 2^32, use the server IP address for hash calculation, and use the hash result to modulo 2^32, The result must be an integer between 0 and 2^32-1, and the position of this integer mapped on the hash...