Data concentrator with blade-type framework

Abstract

The invention discloses a data concentrator with a blade-type framework, which is provided with a management unit, a storage unit, a network unit, an extended I / O (input / output) unit, optical fibre P2P (peer-to-peer) units and a process layer bus unit, wherein a high-speed synchronous data bus is established, all the units perform data sharing via the high-speed synchronous bus of a back plate, and the blade-type data concentrator with two working modes, i.e., an independent mode and a cluster mode, is formed; the management unit, the storage unit and the network unit adopt a real-time embedded operation system, and the network unit is provided with four or more Ethernet interfaces and capable of establishing connection with four or more main stations in different network segments simultaneously; each optical fibre P2P unit or the process layer bus layer adopts a real-time embedded operation system, and provided with four groups of optical fibre interfaces, thus solving the problems of data concentrators based on a common industrial personal computer in the aspects of reliability, extensibility, etc; and a solution is provided for power grid intelligent communication devices and similar products via the design concept of the blade-type framework.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof, and relates to a wide-area measurement system for power grids. Background technique [0002] In order to further strengthen the power system dispatching center's ability to monitor and analyze the dynamic stability of the power system, synchrophasor measurement units (PMUs) should be installed in important substations and power plants to build a real-time dynamic monitoring system for the power system. The domain measurement system (WAMS) master station realizes the monitoring and analysis of the dynamic process of the power system. The system will become one of the main data sources of the dynamic real-time data platform of the power system dispatching center, and will gradually be combined with the EMS system and the safety automatic control system to strengthen the monitoring of the dynamic security and stability of the power system and improve the dispatc...

AI Technical Summary

Problems solved by technology

When there are multiple master stations or multiple channel redundancy, it is required that the data concentrator can communicate with multiple WAMS master stations at different rates and different content through different channels at the same time. Some important plant stations It is even necessary to send data to the WAMS system or EMS system of the provincial survey, network survey and national survey at the same time. If the main station has A and B sets of backup or communication has a redundant design, and requires each channel to be independent of each other, these requirements have great impact on communication. The expansion capability requirements are very high. In some occasions, real-time data and offline data are required to be transmitted separately in the I and II areas of the dispatching data network. Due to the weak scalability, the existing industrial computer mode is difficult to meet the above requirements.

[0007] In addition to flexible and changeable communication requirements, the data concentrator also has storage requirements for storing 14 days of dynamic phasor data. If it is used for control, there are also requirements for expanding I / O and isolation between internal communication and external communication networks. The processing of the digital substation process layer bus, which poses new challenges to the adaptability and scalability of the data concentrator

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