Subsynchronous resonance or oscillation-oriented remote monitoring system

Abstract

The invention discloses a subsynchronous resonance or oscillation-oriented remote monitoring system, which comprises in-situ torsional vibration series devices, sub-station level data management centres and a main station level data management centre, wherein the in-situ torsional vibration series devices and the sub-station level data management centres are in communication connection through switches; the sub-station level data management centres and the main station level data management centre are in communication connection through power data networks; the torsional vibration series devices and a standard time system GPS are synchronous; the sub-station level data management centres finish integrating and forwarding of the data on all devices in a same power station; and the main station level data management centre finishes centralized management and comprehensive analysis of sub-station data within the jurisdiction. According to the subsynchronous resonance or oscillation-oriented remote monitoring system, intelligent clustering, risk assessment and safety pre-warning of a torsional vibration data-based machine-network operation mode are also achieved besides that real-time monitoring of subsynchronous resonance or oscillation characteristics in a regional power grid under ambient excitation can be achieved; and the subsynchronous resonance or oscillation-oriented remote monitoring system can effectively serve power dispatching operating personnel, and has the advantages of advanced technology, excellent performance, practicability, high expandability and the like.

Description

technical field [0001] The invention belongs to the technical field of power system stability control, and in particular relates to a remote monitoring system for subsynchronous resonance or oscillation, which is mainly used for real-time monitoring and centralized management of dynamic oscillation in a regional power grid under environmental excitation. technical background [0002] With the interconnection of regional power grids, the demand for long-distance large-capacity transmission continues to rise, and new technologies such as series compensation transmission, AC-DC hybrid transmission, and flexible AC transmission equipment are increasingly adopted by the power system, making the resulting sub-synchronization The problem of resonance or oscillation seriously threatens the safe and stable operation of the power grid and the unit. As a key issue in the field of dynamic power system stability control, it is of great theoretical and practical significance to study a wi...

AI Technical Summary

Problems solved by technology

However, it should be pointed out that modal damping, as an important index to measure subsynchronous resonance or oscillation stability, currently lacks an identification method under environmental excitation. The continuous monitoring technology of dynamic damping is very necessary

In addition, due to the interconnection of regional power grids, the number of weak links that lead to sub-synchronization risks in the operation of the system has increased. In order to ensure the safe and reliable operation of the unit and the power grid, it is urgent to study a centralized torsional vibration monitoring system for regional power grids to improve the intelligence of operation management. level of

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