4 results about "Branch switching" patented technology

The application discloses a code branch switching method and device, equipment and a storage medium, the method comprises the following steps: in response to the code copy switching instruction of the target branch, all copies of the code warehouse are traversed, it is judged whether there is a copy in the target branch, if not, when the current branch meets the first condition and the remote end of the code warehouse meets the second condition, if the target branch exists in the remote end, the current branch is switched to the target branch, the first condition is that the work area of the current branch does not exist uncommitted or unpushed code, the second condition is that the remote end contains all code submission records of the current branch, if the target branch does not exist in the remote end, the current branch is switched to the preset default branch. As can be seen, when the branch needs to be switched, how to switch the branch is automatically judged, the developer is prevented from switching the branch without committing the code, the manual operation error of the developer is reduced, and the development accuracy is improved.

The invention relates to a branch switch state determination method, system and device of a multi-branch pipeline and a medium, and the determination method comprises the steps: obtaining the fluid flow speed of each branch of the pipeline in different switch states, and calculating the initial volume flow of each branch; the initial volume flow is corrected through the pipeline parameters and the fluid parameters of the branches in the theoretical working state and the actual working state so as to obtain the standard condition volume flow of the branches, and finally the total standard condition volume flow under different branch switching schemes is generated according to the standard condition volume flow of the branches in different switching states. The optimal branch switching scheme is determined according to the total standard condition volume flow and the preset target, on one hand, it is ensured that the standard condition volume flow of the pipeline can reach the preset target, and on the other hand, by correcting the volume flow of each branch, the metering precision is improved, the accuracy of metering data is ensured, and the pipeline transmission difference of the pipeline meets the requirement.

This invention discloses a novel online location method for critical branches in power systems based on impedance short-circuit ratio. The method includes: defining an expression for calculating the impedance short-circuit ratio of any connected device; obtaining a node impedance matrix for calculating the impedance short-circuit ratio of the connected device; taking the self-impedance corresponding to the access node of the connected device in the diagonal elements of the node impedance matrix as its Thevenin equivalent impedance; expressing the change in Thevenin equivalent impedance caused by branch switching using a low-order update formula, and calculating the sensitivity of the Thevenin equivalent impedance to the admittance of each branch; defining the branch influence factor and its constituent critical branch online judgment matrix according to the low-order update formula and sensitivity expression, thereby achieving critical branch location at both the device and system levels. This invention fills the current research gap in the field of critical branch location using impedance short-circuit ratio, and can provide a certain reference for the safe and stable operation of future new power systems. It is simple to implement, highly applicable, and has significant value in engineering design.

The invention provides a hybrid power transmission network high-precision fault positioning method based on space-time electromagnetic pulse decoupling analysis, and relates to the technical field of power system fault distance measurement, and the method comprises the steps: S1, collecting the connection state of a power transmission network in real time, automatically recognizing the topological changes of branch switching, temporary wiring and the like, and updating an equivalent topological graph; s2, deploying a detection device and performing time synchronization operation; s3, constructing a dynamic coordinate system; s4, when the line has a fault, carrying out calibration processing on the wave head of the generated fault traveling wave signal; determining a preliminary judgment position of the fault point; s6, determining a final judgment position of the fault point, wherein the position is the fault point; and S7, determining the position of the fault point on the topological structure diagram of the power transmission network. The method has the beneficial effects that fault position judgment failure caused by topological change is avoided; the mutation point judgment accuracy can be improved; and a mobile detection device is introduced to provide virtual coordinate points, so that fault positioning under a blind area condition is realized.