Wide-area stable communication devices and method having intelligent identification function

Abstract

The invention provides wide-area stable communication devices and method having an intelligent identification function. Special communication devices are deployed at plant station ends of a power system, unified access of wide-area stable control terminal equipment such as wide-area PMUs (phasor measurement units), stable control devices and the like is realized, and real-time reliable communication between the special communication devices and a stable control central station is realized through a special optical fiber network. Besides, the special communication devices can realize functions of real-time automatic finding and identification of the on-line or off-line state of the wide-area stable control terminal equipment and transmit information after identification to the wide-area stable control central station in real time. With the adoption of the devices and the method, complex programs that system configurations are required to be changed manually when access places of the stable control terminal equipment in the plant stations are changed and the equipment becomes online and offline are eliminated, data acquisition and unified access of control terminals are realized through the special communication devices, defects in data acquisition and control network separation of a wide-area stable system are effectively overcome, problems that data are acquired repeatedly and are difficult to share are solved, and the utilization efficiency of power acquisition data is improved.

Description

technical field [0001] The invention relates to the technical field of power system communication, in particular to a wide-area stable communication device and method with an intelligent identification function. Background technique [0002] With the construction of cross-regional interconnection grids and the development of the future global energy Internet, there will be more demands for long-distance and large-scale stable control services. In addition, the application of more wide-area measurement and new control equipment and systems, More and more long-distance data and information are transmitted, and the wide-area communication traffic is relatively large, and the synchronization requirements are high. The business has put forward high reliability and high real-time transmission requirements for power communication. [0003] At present, the data acquisition of the WAMS system and the communication network of the stability control system adopt different communication ...

AI Technical Summary

Problems solved by technology

[0003] At present, the data acquisition of the WAMS system and the communication network of the stability control system adopt different communication networks, among which the PMU data acquisition of the WAMS system is mainly transmitted through dispatching data, which is used for real-time monitoring of the operation status of the power line by the WAMS central station and the dispatching system , and the long data delay and congestion problems of the dispatching data network have not been well resolved; the stability control system also collects the PMU data through the point-to-point optical fiber dedicated line to judge the load status of the line, and according to the load status of different lines through the main station The system issues offline strategies to cut machines or loads and other control commands. This point-to-point control range is limited, and it is difficult to meet the real-time and reliability requirements of the wide-area stability control system for large-scale control.

In addition, the separation of communication network between WAMS system and security control system has the problems of difficulty in realizing data sharing, repetitive collection of PMU data, and low application efficiency.

[0004] At present, the control system of the central site mainly realizes the identification of the terminal equipment in the plant station connected to the network through manual configuration. Changing the system configuration makes the program complex; in addition, once the control system fails to receive the collected data from the terminal equipment, it is difficult to judge whether it is a device failure or a communication line failure. It is necessary to manually find out the cause of the failure step by step, and it is difficult to realize the automatic discovery and timely processing of the failure.

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