45 results about "Smart grid communication" patented technology

A system for communication network management of a utility grid includes a database configured to store a grid information data set, where the grid information data set includes network device information for the utility grid and a network management system executable by a processor to: receive an event message from one or more network devices indicative of one or more failures in a communication network of the utility grid; retrieve the grid information data set; identify one or more network device associated with the one or more failures based on the grid information data set; transmit a request for a response to the identified one or more network devices; determine a response pattern based on responses from the identified one or more network devices in order to identify a cause of the failure based on the response pattern.

The invention discloses a relay protection controller based on a PXI-e and provided with a smart power grid communication protocol. According to the relay protection controller, a data package sent by an external electric power protection device enters a central processing unit through four groups of PCI-e x1 buses with 250MB bandwidths after passing the PXI-e bus, wherein the four groups of PCI-e x1 buses are collected by a bus controller. The central processing unit calls an IEC 61850 electric power communication protocol stack and an IEEE 1588 time tick communication protocol stack installed in a memorizer to solve the obtained data package through an RTOS, then, the central processing unit carries out operation analysis on data, and the data are sent to a device to be controlled through the bus controller by the PXI-e bus. The IEC 61850 electric power communication protocol stack and the IEEE 1588 time tick communication protocol stack are used for achieving timing with the external electric power protection device through an Ethernet interface, and therefore clock synchronization demands can be met. The relay protection controller has the advantages that nanosecond-level synchronization with signal acquisition and control board cards can be achieved, and clock precise synchronization of an electric power protection system can be achieved.

The invention provides a method for precisely scheduling uplink resources in intelligent network communication. The size of data cached by UE is expressed by cache size index columes in a BSR frame format, and under the larger cache condition, the resources are quite severely wasted. In order to effectively reduce the resource waste condition, the process for sending the report of the status of the uplink data cache domain includes the following steps of refining a cache size section corresponding to a large cache value, setting secondary tables respectively provided with 64 index values for all sub-sections of the cache size section respectively, determining whether to search the secondary tables through a reserved bit position in a sub-head-portion of an MAC control unit or not, and more precisely reflecting the information of the status of the uplink cache of the UE through a certain mapping rule. On the premise that no additional expenses are needed, user and wireless resource scheduling efficiency is improved, and the system resource utilization rate is effectively increased.

The invention claims protection of a communication method between a power line carrier IPv6 and wireless ZigBee in the technical field of smart grid communication. The communication method realizes the mutual communication between the power line carrier IPv6 network and the wireless ZigBee network without changing the ZigBee and power line carrier IPv6 protocol, and through the multi-space coexistence scheduling strategy and filtering blocking mechanism of data packets, The data packets are processed efficiently, so that the seamless connection between the power line carrier IPv6 and the wireless ZigBee heterogeneous network is realized. The invention realizes the communication conversion between the power line carrier IPv6 and the wireless ZigBee, provides a solution for the hybrid transmission of the wired network and the wireless network, and effectively solves the problem of communication data conversion between the power line carrier IPv6 network and the ZigBee network in the smart grid problem, which facilitates the seamless connection between heterogeneous networks in smart grids.

The present disclosure encompasses establishing and maintaining a routing protocol based on a measured link metric p, such as for a smart grid communication system. A link between a first node such as a router A and a neighbouring second node B of a communication path from a source to a destination in a packet oriented communication network is selected wherein the two nodes are connected via first and second communication links. An updated link metric p(t+1) at a point in time t+1 of the first communication link is determined. The first or the second communication link is selected for transmitting a further packet from node A to node B by comparing the updated link metric p(t+1) to a threshold pthr.