Multifunctional electric energy quality monitoring and analyzing system

Abstract

The invention relates to a multifunctional electric energy quality monitoring and analyzing system which belongs to the technical field of electric energy quality monitoring. The multifunctional electric energy quality monitoring and analyzing system comprises a plurality of multifunctional electric energy quality monitoring analyzers, a timing subsystem and a server computer, wherein the multifunctional electric energy quality monitoring analyzers are respectively communicated with a global positioning system timing module and the server computer by Ethernet or a CAN (Controller Area Network) bus interface or an RS232 communication interface or an RS485 interface; and each multifunctional electric energy quality monitoring analyzer comprises a signal connecting module 1, a signal analyzing and dispatching module 2, a power supply module 3, a server 4 and a global positioning system 5. The invention has simple hardware circuit, easy expansion and convenient installation and debugging, not only can be used as a node of the whole electric energy quality analyzing and fault recording network but also can be used as a single portable instrument.

Description

technical field [0001] The invention belongs to the technical field of power quality monitoring, in particular to a multifunctional power quality monitoring and analysis system. Background technique [0002] Power system power quality monitoring analyzer is a device that can automatically record when the power system fails and oscillates. It can record system current, voltage and its derivation Quantities, such as active power, reactive power and the whole process change phenomenon of system frequency; [0003] At present, most power system power quality monitoring analyzers use a single processor as the core structure, or a dual processor structure: the use of a single processor generally uses a digital signal processor (DSP) or ARM processor; The advantage is that the system hardware structure is simple, easy to debug and upgrade, but when using DSP or ARM, there will be small expandable storage space, few communication interfaces, poor data scheduling ability, complex hu...

AI Technical Summary

Problems solved by technology

[0003] At present, most power system power quality monitoring analyzers use a single processor as the core structure, or a dual processor structure: the use of a single processor generally uses a digital signal processor (DSP) or ARM processor; The advantage is that the system hardware structure is simple, easy to debug and upgrade, but when using DSP or ARM, there will be small expandable storage space, few communication interfaces, poor data scheduling ability, complex human-computer interaction, slow operation speed, and difficult to use accurately. Strict algorithms process a large amount of real-time data, which does not meet the requirements of power monitoring and fault recording; it adopts a dual-chip dual-core structure, usually a DSP processor and an ARM processor, DSP is responsible for data calculation and processing, and ARM processing The processor is responsible for data scheduling and storage, human-computer interaction, etc., and the two processors are connected by a dual-port random access memory; although this structure can well complete various functions of the power quality analyzer, the hardware circuit of this structure is complex , the price is expensive, the installation and commissioning of equipment are very difficult, and the later upgrade and maintenance are very difficult

[0004] In terms of connection methods, domestic products can only be used as a node of the entire power quality analysis and fault recording network to perform real-time analysis and fault recording on the entire power network When recording, multiple power quality analyzers and servers must be used together, not single use; or it can only be used as a separate portable instrument for real-time analysis and fault recording of single-phase or three-phase power lines, instead of Specifically, it has real-time data transmission capabilities, that is, it cannot be used together with multiple power quality analyzers and servers to perform real-time analysis and fault records for the entire power network.

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