Synchronous phasor measurement and operation monitoring terminal and method for power distribution overhead line

Abstract

The invention discloses a synchronous phasor measurement and operation monitoring terminal and method for a power distribution overhead line, and the terminal comprises a monitoring module, a recording module and a power module. The recording module comprises a recording processor, an analog signal collector, a sampling current transformer and an electric field intensity sensor. The recording processor receives record data collected by the analog signal collector, and calculates a synchronous phasor and electric energy quality through the record data. The monitoring module obtains a circuit current signal, an electric field intensity signal, the synchronous phasor and electric energy quality from the recording module, and transmits the circuit current signal, the electric field intensity signal, the synchronous phasor and the electric energy quality to a main station server through a network line. The power module is used for supplying proper power to the recording module and the monitoring module. The terminal can record the transient waveform of a power distribution network during abnormal operation and an operation fault, can monitor the steady operation behavior of a power distribution network power system in real time, also can analyze harmonic pollution, and provide more complete and subtle transient behavior monitoring for the operation of the power distribution network.

Description

technical field [0001] The invention relates to the field of power system automation, in particular to a terminal and method for synchronous phasor measurement and operation monitoring of power distribution overhead lines. Background technique [0002] The distribution network is a low-voltage power grid directly connected to users in the power system, and it is a key link to ensure safe and reliable power supply for users. With the development of my country's economy and technology, the level of modern industrial automation has been greatly improved, and people's requirements for the operation level of distribution networks are getting higher and higher. However, my country's distribution network has a wide coverage area, complex structure, long cumulative distance, and operating environment. Poor and other characteristics have caused the distribution network to become the link with the highest accident rate in the power system. In recent years, the scale of the distributio...

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Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art above, the present invention provides a terminal and method for synchronous phasor measurement and operation monitoring of power distribution overhead lines. In addition to the monitoring and wave recording processing functions of ordinary fault indicators, the monitoring terminal also integrates With the function of synchronous phasor measurement and power quality monitoring, it can not only record the transient waveform when the distribution network is abnormal and faulty, but also monitor the steady-state operation behavior of the power system of the distribution network in real time, and also analyze the harmonic pollution. Power quality problems, such as power quality, provide a more comprehensive and detailed transient stability behavior monitoring for distribution network operation

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