Model of electric energy quality monitoring device based on international electro-technical commission (IEC) 61850

Abstract

The invention discloses a model of an electric energy quality monitoring device based on international electro-technical commission (IEC) 61850. In the model, the electric energy quality monitoring device can perform steady-state data measurement, transient-state event detection and monitoring recording according to function, which are described by different logic nodes respectively, wherein the steady-state data measurement mainly adopts the logic node in a logic node group M; the transient-state event detection mainly adopts the logic node in a logic node group Q; a logic node RDRE can be triggered to execute waveform recording; running monitoring adopts a logic node LPHD; if electric energy quality relevant information in modelling has a corresponding model in an IEC61850 standard, the model is adopted directly, and if the electric energy quality relevant information does not have the corresponding model, the relevant logic node or a relevant data object is adopted for expanded implementation; the monitoring of real-time data is realized by a report form; and timing recording data and event recording data are stored in a log so as to guarantee that the data is not lost after the device powers down and long-time communication is interrupted. The model is applied to quality monitoring of the electric energy of an intelligent transformer substation.

Description

technical field [0001] The invention relates to a model of a power quality monitoring device based on IEC61850, which belongs to the technical field of electric power intelligent automation. Background technique [0002] Networking, informatization, standardization and intelligence have become the inevitable development trend of the power quality monitoring system, but the existing monitoring equipment widely adopts the manufacturer's custom communication protocol, and the standards followed are inconsistent, resulting in different manufacturers' equipment during the monitoring network construction process. Poor compatibility between them, difficulty in data sharing, and low operating efficiency of the monitoring system platform. Some existing monitoring systems use PQDIF specification as a standard power quality data exchange format, which solves the problem of how to exchange and store data between different power quality file formats, but considering the actual power qual...

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Problems solved by technology

[0002] Networking, informatization, standardization and intelligence have become the inevitable development trend of the power quality monitoring system, but the existing monitoring equipment widely adopts the manufacturer's custom communication protocol, and the standards followed are inconsistent, resulting in different manufacturers' equipment during the monitoring network construction process. Poor compatibility, difficult data sharing, low operating efficiency of the monitoring system platform, etc.

Some existing monitoring systems use PQDIF specification as a standard power quality data exchange format, which solves the problem of how to exchange and store data between different power quality file formats, but considering the actual power quality monitoring needs, during the monitoring process Many aspects such as historical data, real-time data, SOE events, and waveform data need to be considered. PQDIF files have relatively large limitations in processing real-time data and transient events. At the same time, data format conversion requires interface programs. Many interface programs are The system brings stability risks and management costs

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