Flexible wide area power grid harmonic synchronous monitoring system

Abstract

The invention discloses a flexible wide area power grid harmonic synchronous monitoring system in the technical field of power system monitoring. The system comprises a harmonic synchronous monitoring terminal, a communication system and a harmonic monitoring center platform which are connected in sequence, wherein the harmonic synchronous monitoring terminal is used for receiving a monitoring task transmitted by the harmonic monitoring center platform, performing synchronous measurement of power grid harmonic according to the monitoring task and then transmitting a synchronous measurement result to the harmonic monitoring center platform through the communication system; the communication system is used for transmitting the monitoring task and a synchronous measurement result of each harmonic synchronous monitoring terminal; and the harmonic monitoring center platform is used for determining the mounting position of each harmonic synchronous monitoring terminal and transmitting the monitoring task to each harmonic synchronous monitoring terminal through the communication system, and is also used for receiving the synchronous measurement result of each harmonic synchronous monitoring terminal and processing and outputting the received synchronous measurement result. Through the system, the defect of lack of real-time property during measurement is overcome, and the utilization rate of the measuring terminal is improved.

Description

technical field [0001] The invention belongs to the technical field of power system monitoring, and in particular relates to a flexible wide-area power grid harmonic synchronous monitoring system. Background technique [0002] In recent years, converters, frequency conversion speed regulation, electric arc furnaces, electrified railways, household electronic equipment and various power electronic equipment in the distribution network have continued to increase. The power consumption characteristics of these loads (non-linearity, impact and asymmetry) The voltage and current waveforms in the power system are severely distorted, which is power harmonics. In the public power grid, harmonics cause power supply and electrical equipment to overheat, increase power loss, affect their normal operation, reduce the service life of the equipment and the power factor of the system, and cause short circuits and harmonic-sensitive relays. Electrical protection and other equipment malfunc...

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Problems solved by technology

[0010] Aiming at the defects existing in the current harmonic synchronous monitoring system, the present invention proposes a flexible wide-area power grid harmonic synchronous monitoring system, which is used to solve the problems of lack of real-time measurement and low utilization rate of measuring devices in the current harmonic synchronous monitoring system

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