Abstract: A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.

Abstract: Systems, apparatus, and methods for creating a virtual machine are provided. A control device may receive a virtual machine creation request. The control device may select a plurality of candidate host machines from a plurality of host machines based on the virtual machine creation request and attribute information corresponding to the candidate host machines. The control device may determine a target host machine from the candidate host machines based on a priority of each candidate host machine. The control device may create a virtual machine on the target host machine.

Abstract: A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.

Abstract: Systems, apparatus, and methods for creating a virtual machine are provided. A control device may receive a virtual machine creation request. The control device may select a plurality of candidate host machines from a plurality of host machines based on the virtual machine creation request and attribute information corresponding to the candidate host machines. The control device may determine a target host machine from the candidate host machines based on a priority of each candidate host machine. The control device may create a virtual machine on the target host machine.

Abstract: For service access, a physical address of a specified application service corresponding to a specified IP segment is acquired by a user mode component in accordance with an IP-segment information of the specified IP segment, which is included in a virtual network interface card configured in a system container, and an address information including the physical address is transmitted to a router module of a machine kernel. A routing table is established by the router module in accordance with the address information. Then a network data packet is acquired and forwarded to a destination service site by the router module in accordance with the routing table.

Abstract: For service access, a physical address of a specified application service corresponding to a specified IP segment is acquired by a user mode component in accordance with an IP-segment information of the specified IP segment, which is included in a virtual network interface card configured in a system container, and an address information including the physical address is transmitted to a router module of a machine kernel. A routing table is established by the router module in accordance with the address information. Then a network data packet is acquired and forwarded to a destination service site by the router module in accordance with the routing table.