Distributed harmonic online detection system based on building equipment

Abstract

The invention discloses a distributed harmonic online detection system based on building equipment, which is composed of a terminal connection part and a detection device, wherein the terminal connection part comprises harmonic detection terminals, wireless network / Ethernet gateways, an application server, a WEB server, a database server, a first online detection device and a second online detection device; the detection device comprises a display, a keyboard frame, a stepping board, a main frame, a side supporting rod, a keyboard supporting frame, a power interface and a fixing seat, the side supporting rod is arranged at the lower end of the fixing seat, the bottom part of the keyboard frame is provided with the keyboard supporting frame, and the bottom part of the main frame is provided with the power interface. The gateways can be arranged nearby according to local conditions, the existing resources are made full use of to maximally reduce the system construction cost, and complicated wiring can be avoided.

Description

technical field [0001] The invention relates to the technical field of detection devices, in particular to a distributed harmonic online detection system based on construction equipment. Background technique [0002] In recent years, with the rapid development of modern science and technology, major changes have taken place in the structure of power loads in civil building power distribution systems, and loads such as semiconductor rectifiers, thyristor voltage regulators, and frequency conversion adjustment devices have developed rapidly. On the one hand, these modern electrical equipment have higher requirements on power quality than traditional equipment, and are vulnerable to impact; on the other hand, these equipment based on power electronics technology and computer technology have load nonlinearity, impact and unbalanced power consumption. characteristics, the waveform distortion of civil building power distribution systems is getting more and more serious, and the in...

AI Technical Summary

Problems solved by technology

[0003] In these detection schemes, most of them use instruments such as digital oscilloscopes or portable power quality monitors for on-site measurement. The test time is short, and only one-sided harmonic data during the test period can be obtained. The existing harmonic online detection system uses a power quality online monitoring device, which is powerful and has a large-screen LCD and a keyboard. Integrating multiple functions such as harmonic detection, voltage deviation analysis, frequency deviation analysis, and three-phase voltage unbalance analysis, it is suitable for monitoring the power quality of 10kV incoming lines of buildings

However, the cost of the device is high, and it is not suitable for monitoring multiple devices or distribution branches in the building, and its large size also makes it difficult to install it next to the socket of the device or in the distribution box

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